[ 1 ] GENERAL DESCRIPTION. Sharp SF 2514, SF 2314, SF 2414, SF-2414
The SF 2314, SF 2414 and SF 2514 copiers are compact and efficient, designed for users with average copy volumes of 2,000-3,000 sheets per month. These models offer features like a quick warm-up time and a first copy time of 5.9 seconds or less.
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SERVICE MANUAL
CODE: 00ZSF2314SM1E
Copier
SF-2314
SF-2414
MODEL
SF-2314
MODEL
SF-2414
MODEL
SF-2514
SF-2514
CONTENTS
[ 1 ] GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[ 2 ] PRODUCT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
[ 3 ] EXTERNAL VIEW AND INTERNAL STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . 3-1
[ 4 ] UNPACKING AND INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
[ 5 ] GENERAL DESCRIPTIONS OF EACH SECTION . . . . . . . . . . . . . . . . . . . . . . . 5-1
[ 6 ] DISASSEMBLY AND ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
[ 7 ] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
[ 8 ] SIMULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1
[ 9 ] SELF DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1
[10] SERVICE AT MEMORY TROUBLE AND
[10] MAIN CONTROL PWB REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1
[11] MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1
[12] ELECTRICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-1
Parts marked with "
!
" is important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.
SHARP CORPORATION
This document has been published to be used for after sales service only.
The contents are subject to change without notice.
[ 1 ] GENERAL DESCRIPTION
. . . . . . . . . . . . . . . . . . . 1-1
1. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. Target users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
3. System outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
[ 2 ] PRODUCT SPECIFICATIONS
. . . . . . . . . . . . . . . 2-1
1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2. Details of each section . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
3. Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
[ 3 ] EXTERNAL VIEW AND INTERNAL
STRUCTURE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1. External view and internal structure
(SF-2514 as the example model) . . . . . . . . . . . . . . . . . 3-1
2. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3. Cross section (SF-2514 as the example model) . . . . . . 3-3
4. Switches, sensors, detectors
(The SF-2514 as the typical example) . . . . . . . . . . . . . 3-4
5. Clutches, solenoids
(The SF-2514 as the typical example) . . . . . . . . . . . . . 3-5
6. Motors (The SF-2514 as the typical example) . . . . . . . 3-6
7. PWBs (The SF-2514 as the typical example) . . . . . . . . 3-7
[ 4 ] UNPACKING AND INSTALLATION
. . . . . . . . . 4-1
1. Packing drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
(1) Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
(2) Space around the machine . . . . . . . . . . . . . . . . . . . 4-2
(3) Installing table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
(4) Power source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
(5) Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
3. Installation procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
(1) Optical system unlocking . . . . . . . . . . . . . . . . . . . . . 4-3
(2) Cassette setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
(3) Developer setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
(4) Toner supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
(5) Toner density sensor level check . . . . . . . . . . . . . . 4-5
(6) Accessory attachment . . . . . . . . . . . . . . . . . . . . . . . 4-6
4. Locking procedure for transit or repacking . . . . . . . . . . 4-6
(1) No.2/No.3 mirror unit (Mirror base B) lock . . . . . . . 4-6
(2) No.4/no.5 mirror unit (Mirror base C) lock . . . . . . . 4-6
5. Optional paper feed unit (SF-CM14),
Installation Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
(1) Set the main copier unit on the paper feed unit. . . . 4-7
(2) Remove the paper tray from the main copier unit. . . 4-7
(3) Open the upper unit of the main copier unit. . . . . . . 4-7
(4) Connect the main copier unit and the paper feed unit. . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
6. Optional multi bypass feeder unit Installation Manual . . 4-8
(1) Open the upper unit of the main copier unit. . . . . . . 4-8
(2) Release the lock for the manual bypass unit and remove the manual bypass unit. . . . . . . . . . . . . . . . 4-8
(3) Mount the multi bypass feeder unit onto the main copier unit. . . . . . . . . . . . . . . . . . . . . . . . . 4-9
[ 5 ] GENERAL DESCRIPTIONS OF
EACH SECTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1. Paper feed section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
2. Separation, transport section . . . . . . . . . . . . . . . . . . . . 5-2
3. Fuser, paper exit section . . . . . . . . . . . . . . . . . . . . . . . 5-2
4. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
CONTENTS
5-1. General descriptions . . . . . . . . . . . . . . . . . . . . . . . .5-3
(1) Original table . . . . . . . . . . . . . . . . . . . . . . . . .5-3
(2) Copy lamp . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
(3) Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
(4) Lens (Fixed focus lens) . . . . . . . . . . . . . . . . .5-3
(5) Lens home position sensor (LHPS) . . . . . . . .5-3
(6) Lens base . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
(7) Lens drive shaft . . . . . . . . . . . . . . . . . . . . . . .5-4
(8) Lens drive wire . . . . . . . . . . . . . . . . . . . . . . . .5-4
(9) No. 4/5 mirror base . . . . . . . . . . . . . . . . . . . .5-4
(10) Mirror motor . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
(11) Mirror home position sensor (MHPS) . . . . . . .5-4
(12) No. 2/3 mirror base . . . . . . . . . . . . . . . . . . . .5-4
(13) Copy lamp unit . . . . . . . . . . . . . . . . . . . . . . .5-4
(14) Thermal fuse . . . . . . . . . . . . . . . . . . . . . . . . .5-4
(15) Reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
(16) Exposure adjustment plates . . . . . . . . . . . . . .5-4
(17) Mirror base drive wire . . . . . . . . . . . . . . . . . . .5-4
(18) Lens drive motor . . . . . . . . . . . . . . . . . . . . . .5-4
(19) AE sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
5-2. Basic operations . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
6. Copy process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
(1) Photoconductor . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
(2) Process diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
(3) Actual process . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
(4) Transit of photoconductor drum surface potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
(5) Process correction system . . . . . . . . . . . . . . . . . .5-12
1) Outline of the correction system . . . . . . . . . . .5-12
2) Correction operation . . . . . . . . . . . . . . . . . . . .5-12
7. SPF section (SF-2514 only) . . . . . . . . . . . . . . . . . . . . .5-14
1. Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14
[ 6 ] DISASSEMBLY AND ASSEMBLY
. . . . . . . . . . . 6-1
1. Paper feed section, paper transport section, power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
1-1. Paper feed unit . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
1-2. Paper feed roller ass’y removal . . . . . . . . . . . . . .6-1
1-3. Separation roller . . . . . . . . . . . . . . . . . . . . . . . . .6-2
1-4. Takeup roller, paper feed roller . . . . . . . . . . . . . .6-2
1-5. Resist roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
1-6. Transport belt . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
1-7. Socket holder unit . . . . . . . . . . . . . . . . . . . . . . . . .6-4
1-8. Lower unit PWB . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
1-9. Cassette paper empty detector (CPED1) . . . . . . .6-4
1-10. Power unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
2. Manual paper feed section . . . . . . . . . . . . . . . . . . . . . . .6-5
2-1. Manual paper feed roller, manual takeup roller . . .6-5
2-2. Reverse rotation roller ass’y . . . . . . . . . . . . . . . . . .6-5
3. Fuser section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
3-1. Fuser unit removal . . . . . . . . . . . . . . . . . . . . . . . . .6-6
3-2. Heater lamp replacement . . . . . . . . . . . . . . . . . . . .6-6
3-3. Upper heat roller ass’y removal . . . . . . . . . . . . . . .6-7
3-4. Upper separation pawl replacement . . . . . . . . . . . .6-7
3-5. Lower cleaning roller and lower heat roller replacement . . . . . . . . . . . . . . . . .6-7
3-6. Scraper replacement . . . . . . . . . . . . . . . . . . . . . . .6-8
3-7. Thermistor/thermostat removal . . . . . . . . . . . . . . . .6-8
4. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9
4-1. Copy lamp replacement . . . . . . . . . . . . . . . . . . . . .6-9
I
4-2. Copy lamp unit replacement . . . . . . . . . . . . . . . . . 6-9
4-3. Mirror base drive wire replacement . . . . . . . . . . . . 6-9
4-4. Lens and lens drive wire replacement
(Only the zoom function model) . . . . . . . . . . . . . 6-10
4-5. No. 4/5 mirror unit and peripheral parts replacement . . . . . . . . . . . . . . . 6-11
4-6. Optical unit removal . . . . . . . . . . . . . . . . . . . . . . 6-11
4-7. Other parts in the optical system . . . . . . . . . . . . . 6-11
4-8. Light adjustment plate/temperature fuse
removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
5. SPF section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13
5-1. SPF mechanism removal . . . . . . . . . . . . . . . . . . 6-13
5-2. Paper feed roller/takeup roller replacement . . . . 6-14
5-3. Reverse roller (ass’y) replacement . . . . . . . . . . . 6-14
5-4. SPF control PWB replacement . . . . . . . . . . . . . . 6-15
5-5. Clutch/solenoid removal . . . . . . . . . . . . . . . . . . . 6-15
5-6. Sensor removal . . . . . . . . . . . . . . . . . . . . . . . . . 6-15
6. Drum section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
6-1. Drum unit removal . . . . . . . . . . . . . . . . . . . . . . . . 6-16
7. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16
7-1. Developer unit removal . . . . . . . . . . . . . . . . . . . . 6-16
7-2. Developer cartridge removal . . . . . . . . . . . . . . . 6-16
7-3. Toner motor removal . . . . . . . . . . . . . . . . . . . . . 6-17
7-4. Toner density sensor . . . . . . . . . . . . . . . . . . . . . 6-17
8. Operation panel section/medium cabinet . . . . . . . . . . 6-17
9. Major parts in the frame side . . . . . . . . . . . . . . . . . . . . 6-18
9-1. Ozone filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18
9-2. Optical unit/SPF unit cooling fan removal . . . . . . 6-18
9-3. Ventilation fan motor . . . . . . . . . . . . . . . . . . . . . 6-18
9-4. Transport roller clutch . . . . . . . . . . . . . . . . . . . . 6-19
9-5. Paper exit sensor . . . . . . . . . . . . . . . . . . . . . . . . 6-19
[ 7 ] ADJUSTMENTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
1. Developer section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
(1) MG roller main pole position adjustment . . . . . . . . . 7-1
(2) Adjustment of clearance between DV doctor and MG roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
2. Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
A. Adjustments list . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
B. Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
C. Adjustment contents . . . . . . . . . . . . . . . . . . . . . . . . 7-6
(1) Lens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
(2) Mirror . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
(3) Image distortion adjustment . . . . . . . . . . . . . . . 7-8
(4) Copy image center position adjustment . . . . . 7-12
(5) Focus adjustment (Resolution adjustment) . . . 7-14
(6) Copy magnification ratio adjustment . . . . . . . . 7-15
(7) Uniformity adjustment . . . . . . . . . . . . . . . . . . . 7-18
(8) Image loss/void area adjustment . . . . . . . . . . . 7-19
3. COPY DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . 7-26
(1) Copy density adjustment timing . . . . . . . . . . . . . 7-26
(2) Note for copy density adjustment . . . . . . . . . . . . 7-26
(3) Necessary items for the copy density adjustment 7-26
(4) Copy density adjustment mode . . . . . . . . . . . . . . 7-26
(5) Copy density adjustment procedure . . . . . . . . . . 7-26
A. Test chart (UK0G-0162FCZZ) setting . . . . . . 7-26
B. Normal copy mode (Non-toner-save mode) copy density adjustment . . . . . . . . . . . . . . . . 7-26
C. Normal copy mode (Toner save mode)
copy density adjustment . . . . . . . . . . . . . . . . 7-27
D. Photo copy mode (Non-toner-save mode) copy density adjustment . . . . . . . . . . . . . . . . 7-27
E. Auto copy mode (Non-toner-save mode)
copy density adjustment . . . . . . . . . . . . . . . . 7-27
F. Auto copy mode (Toner save mode) copy density adjustment . . . . . . . . . . . . . . . . . . . . . 7-28
II
G. Copy density adjustment in the SPF copy mode . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-28
(6) Copy density adjustment table . . . . . . . . . . . . . . .7-29
4. Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-30
(1) Transfer charger wire installation . . . . . . . . . . . . .7-30
(2) DV bias adjustment . . . . . . . . . . . . . . . . . . . . . . .7-30
(3) Separation charger output adjustment . . . . . . . . .7-30
[ 8 ] SIMULATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
1. Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
3. Operating procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-1
4. Purpose list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
5. Details of simulations . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
6. User simulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-13
[ 9 ] SELF DIAG
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
1. Summary/purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
2. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-1
3. Clearing the self diag display . . . . . . . . . . . . . . . . . . . . .9-1
4. Self diag contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
5. Conditions for the JAM display . . . . . . . . . . . . . . . . . . . .9-7
1) Paper feed section . . . . . . . . . . . . . . . . . . . . . . . . . .9-7
2) Transport section . . . . . . . . . . . . . . . . . . . . . . . . . . .9-7
[10] SERVICING AT MEMORY TROUBLE AND
MAIN CONTROL PWB REPLACEMENT
. . . .10-1
1. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
2. Purpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
3. Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-1
4. Set value recording sheet . . . . . . . . . . . . . . . . . . . . . . .10-4
5. Memory simulation list . . . . . . . . . . . . . . . . . . . . . . . . .10-5
[11] MAINTENANCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-1
[12] ELECTRICAL SECTION
. . . . . . . . . . . . . . . . . . . .12-1
1. System block diagram . . . . . . . . . . . . . . . . . . . . . . . . . .12-1
2. System operation at power ON . . . . . . . . . . . . . . . . . . .12-1
3. Main circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2
(1) Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2
(2) CPU (IC110) M37702 . . . . . . . . . . . . . . . . . . . . . .12-2
1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2
2 Pin arrangement . . . . . . . . . . . . . . . . . . . . . . .12-2
3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . .12-3
4 CPU: M37702 (IC110) pin signals . . . . . . . . . .12-4
(3) Start/stop control circuit . . . . . . . . . . . . . . . . . . . .12-5
(4) Heater lamp control circuit . . . . . . . . . . . . . . . . . .12-6
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-6
(5) Driver circuit (Solenoid, magnetic clutch) . . . . . . .12-7
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7
2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7
(6) Stepping motor drive circuit . . . . . . . . . . . . . . . . .12-7
1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-7
(7) AE (Auto Exposure) sensor circuit . . . . . . . . . . . .12-7
(8) Toner supply motor drive circuit . . . . . . . . . . . . . .12-8
(9) Reset IC (IC113) . . . . . . . . . . . . . . . . . . . . . . . . . .12-8
1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8
2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-8
(10) Copy lamp control section . . . . . . . . . . . . . . . . . .12-9
4. Operating section . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11
(1) Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11
(2) Display circuit . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . .12-12
2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . .12-12
(3) LED display . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13
5. Power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-13
(1) Signal name and output voltage . . . . . . . . . . . . .12-13
[1] GENERAL DESCRIPTION
1. Features
[Small]
• Compact design
• Small area for operation
[Speedy]
•
Warm-up time 30 sec or less, the first copy 5.9 sec
∼
the fastest in the class.
• The automatic document feeder (standard provision in the SF-
2514 only) increases copy productivity.
2. Target users
Average copy volume of 2,000
∼
3,000 sheets/month (max. 10,000 sheets/month)
3. System outline
[Soft]
• The energy save mode reduces the total power consumption.
• Ozone generation is limited.
• Use of materials which can be recycled.
User simulation
The user can select the desired operating conditions easily. Auto clear time, power save mode time, power save mode warm up time can be set by the user simulation.
SPF (Standard)
SF-2514
Zooming range
(64 ~ 129%)
250-sheet tray
Single manual feed (Standard)
50
50-sheet multi manual feed unit (SF-MF14)
(Option)
(Option)
250-sheets paper feed unit
(SF-CM14)
250 sheets
SF-2414
Zooming range
(64 ~ 129%)
250-sheet tray
Single manual feed (Standard)
50
50-sheet multi manual feed unit (SF-MF14)
(Option)
250 sheets
No.2 tray unit
(Option)
250-sheets paper tray
(SF-UB14)
SF-2314
Zooming range
(1:1)
250-sheet tray
Single manual feed (Standard)
50
50-sheet multi manual feed unit (SF-MF14)
(Option)
1 – 1
[2] PRODUCT SPECIFICATIONS
1. Basic specifications
(1) Type:
(2) Copy speed
• SF-2314
Table top
Paper size
B4
Normal
11 sheets/min
A4 (Landscape) 14 sheets/min
B5 (Landscape) 14 sheets/min
10
″ ×
14
″
11 sheets/min
Legal 11 sheets/min
Letter (Landscape) 14 sheets/min
Enlargement
—
—
—
—
—
—
Reduction
—
—
—
—
—
—
• SF-2414/2514
Paper size Normal Enlargement Reduction
B4 11 sheets/min 10 sheets/min 12 sheets/min
A4 (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min
B5 (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min
10
″ ×
14
″
11 sheets/min 10 sheets/min 12 sheets/min
Legal 11 sheets/min 10 sheets/min 12 sheets/min
Letter (Landscape) 14 sheets/min 10 sheets/min 12 sheets/min
Note: Copy speeds in the enlargement/reduction copy are the same in all the rates.
(3) Warm-up time
Normal 30 sec or less (20 ˚C, 65%RH, rated voltage)
(Preheat YES/NO) 10sec or less (Preheat mode)
Max. 30sec (auto power shut off mode/auto off mode)
Jam recovery time 8sec (Conditions: Standard condition after 60sec of leaving after opening the door.)
(4) First copy time
First copy time
First copy time from each paper feed port
5.9sec (Paper feed port: No. 1 tray)
No. 2 tray (option): 6.8sec
Manual: 5.9sec
(5) Jam recovery time: 5 sec (Condition: Jam in a section except for the fuser section, within 6.0 sec from door open, standard condition.)
(6) Multi copy
Max. quantity of multi copy 99 sheets
(7) Original
Max. original size
Original reference position
Detection
Detection size
B4/10
NO
×
14
AB series
Inch series
″
Left side, about 12mm from the rear
(8) Copy magnification ratio (SF-2414/2514 only)
Fixed ratio
AB series 3R+3E/129, 122, 115, 81, 70, 64%
Inch series 2R+2E/129, 117, 78, 64%
Zoom width 64
∼
129%
2 – 1
(9) Exposure
Exposure mode
Manual steps
(10) Void width
Void area
Image loss
Normal
Lead edge
3.0mm or less
Side (front)
3.0mm or less
Rear edge
1mm
∼
3.0mm
Lead edge
3.0mm max.
Side (front)
3.0mm max.
Rear edge
4.0mm max.
(11) Paper exit
Paper exit tray capacity
Auto/Manual/Photo
Reduction
Lead edge
3.0mm or less
Side (front)
3.0mm or less
Rear edge
1mm
∼
3.0mm
Lead edge
5.0mm max.
Side (front)
5.0mm max.
Rear edge
6.0mm max.
9 steps
Enlargement
Lead edge
3.0mm or less
Side (front)
3.0mm or less
Rear edge
1mm
∼
3.0mm
Lead edge
2.5mm max.
Side (front)
2.5mm max.
Rear edge
3.0mm max.
100 sheets
(12) External view
W
×
D
×
H (mm)
OC top
W
×
D
×
H (mm)
SPF top
Occupying area
W (mm)
Common in
SF-2314/2414
SF-2514
Common in
SF-2314/2414
Weight
S (mm)
SF-2314 about
26.8kg
500
540
×
×
502
502
×
×
295
364
SF-2414 about 27kg
500 + 261 (paper exit tray) + 205
(option Multi paper feed unit)
502
SF-2514 about
30.1kg
(13) Power source
Voltage 100V, 110V, 120V, 127V, 220V, 220
∼
230V, 230
∼
240V, 240V
Frequency 50/60Hz common
(14) Power consumption
Max. power consumption
Average power consumption when operating (Ref. value)
Power consumption in standby
(Ref. value)
Power consumption in pre-heating
(Ref. value)
Power consumption in auto power shut off (Ref. value)
Auto OFF mode (Ref. value)
Dry heater connected
Dry heater not connected
Energy consumption efficiency
1.4 kW
582.4 Wh
72.5 Wh
47.7 Wh
16.5 Wh (with SPF)
14.8 Wh (without SPF)
9.5 Wh
0 Wh
49.4 Wh
Note: Max. value when an option is installed.
2. Details of each section
(1) Paper feed
Copying size
(Max.
∼
Min.)
AB series B4
∼
A6 (Postcard)
Inch series 10
×
14
∼
5 1/2
×
8 1/2
Paper feed system
Paper feed capacity
1 tray + single manual feed
250 sheets
×
1
• AB series
Each paper feed port
No. 1 tray
No. 2 tray
(OP)
Single manual feed
Paper feed size
B4
∼
A5
(Landscape)
B4
∼
A5
(Landscape)
Paper weight Special paper
56
∼
80g/m
2
56
∼
80g/m
2
B4
∼
A6 postcard
(Portrait)
52
∼
130g/m
2
* For paper of 104
∼
130g/m 2 , A4 or smaller.
Recommended recycle paper
Recommended recycle paper
No. 2 original,
OPH, label, postcard sheet, recommended recycle paper, postcards
Front
Front
Multi manual feed (OP)
• When in multi paper feed
• When in single paper feed
B4
∼
A5
(Landscape) postcard
(Portrait)
B4
∼
A6 postcard
(Portrait)
56
∼
80g/m
2
52
∼
130g/m
2
* For paper of 104
∼
130g/m 2 , A4 or smaller.
Postcards, recommended recycle paper
Postcard sheet, recommended recycle paper, postcards, No.
2 original,
OPH label
• Inch series
Each paper feed port
No. 1 tray
No. 2 tray
(OP)
Single manual feed
Paper feed size
Paper weight Special paper
10
×
14
∼
5 1/2
×
8 1/2
15
∼
21 lbs.
Recommended recycle paper
10
×
14
∼
5 1/2
×
8 1/2
10
×
14
∼
5 1/2
×
8 1/2
15
∼
21 lbs.
Recommended recycle paper
14
∼
34.5 lbs. No. 2 original,
* For paper of 28
∼
34.5lbs, letter size or smaller.
OHP.
recommended recycle paper
Front
Front
Multi manual feed (OP)
• When in multi paper feed
• When in single paper feed
10
×
14
∼
5 1/2
×
8 1/2
10
×
14
∼
5 1/2
×
8 1/2
15
∼
21 lbs.
Recommended recycle paper
14
∼
34.5 lbs. No. 2 original,
OHP, label,
* For paper of 28
∼
34.5lbs, letter size or smaller.
recommended recycle paper
(2) Optical section
Light source
Exposure system
Magnification ratio changing system
Lens
Halogen lamp
Slit exposure by moving the light source
By changing the lens position and scan speed.
Fixed focus lens
(3) Process section
Charging system
Transfer system
Separation system
Main charger grid voltage
Charge/Transfer charger applied voltage
(4) Developer section
Developing system
(–) DC scorotron system
(–) DC scorotron system
Discharge plate/separation pawl
Copy mode
Standard
Photo
Toner save
Simulations
No.
8-02
8-03
8-04
F–29
µ
A +
5
−
3
R–29
µ
A +
5
−
3
µ
A
µ
A
Grid voltage
–750V
–460V
–634V
Toner density detection system
Toner box capacity
Developing bias
• Developer
Material
Charging system
•
Toner
Charging system
Two-component developing system
Magnetic sensor system
Toner 210
±
5g
DC–200V
±
3V
Iron powder carrier
Negatively charged by friction
Positively charged by friction
(5) Fuser section
Fusing system Heat roller system
Upper heat roller surface temperature
Heater lamp
180˚C
100V Halogen lamp 1000 W
×
1 pc.
110V Halogen lamp 1000 W
×
1 pc.
120V Halogen lamp 1000 W
×
1 pc.
127V Halogen lamp 1000 W
×
1 pc.
220V Halogen lamp 1000 W
×
1 pc.
230V Halogen lamp 1000 W
×
1 pc.
240V Halogen lamp 1000 W
×
1 pc.
(6) Drive section
Main motor standard
3-phase full wave drive, DC brushless
Rating: DC32V, max. 1.32A, 1500 rpm
(7) SPF
Standard/option Standard only in the SF-2514
Document load capacity About 20 sheets, max. thickness of 3.0 mm
Document size A5
∼
B4, 5 1/2
″ ×
8 1/2
″ ∼
10
″ ×
14
″
Document replacement speed
14 sheets/min
Document weight 52
∼
90 g/m 2 (14
∼
24 lbs)
Random/mix paper feed Not available
2 – 2
3. Supplies
SEC/SECL
No.
1
Name
OPC drum kit
2 Black developer
3 Black toner
4 Heat roller kit
Content
OPC drum
Cleaning blade
Black developer (560g)
Black toner cartridge (200g)
Upper heat roller
Upper fusing separation pawl
Fusing bearing
Lower heat roller
Lower fusing separation pawl x 1 x 3 x 1 x 1 x 4 x 1 x 1 x 10 x 10
Product name
SF234DR
SF234MD
(SF234NDx10)
SF234MT
(SF234NTx10)
SF214HR1
Middle and South America/Asia
No.
Name
1 OPC drum kit
Content
OPC drum
Cleaning blade
Black developer (560g)
2 Black developer
Black toner cartridge (200g)
3 Black toner
4 Heat roller kit
Upper heat roller
Upper fusing separation pawl
Fusing bearing
Lower heat roller
Lower fusing separation pawl x 1 x 3 x 1 x 1 x 4 x 1 x 1 x 10 x 10
Product name
SF234DR
SF234CD
(SF234SDx10)
SF234CT
(SF234STx10)
SF214HR
SEEG/SUK/SCA/SCNZ/Europe/Middle and Near East/Africa
No.
Name Product name
1 OPC drum kit
2 Black developer
3 Black toner
Content
OPC drum
Cleaning blade
Black developer (560g)
Black toner cartridge (200g) x 1 x 1 x 10 x 10
SF234DM
SF234LD
(SF234DVx10)
SF234LT
(SF234Tx10)
4 Heat roller kit
Upper heat roller
Upper fusing separation pawl
Fusing bearing
Lower heat roller
Lower fusing separation pawl x 1 x 3 x 1 x 1 x 4
SF214HR
Note 1: The heat roller kit for this series is common with the previous models SF-2314/2414/2514.
2 – 3
Environmental conditions
Observe the following environmental conditions to ensure the copy quality and machine performance.
1 Standard condition
20
∼
25 ˚C, 65
±
5% RH
2 Operational condition
(%)RH
85
60
20
10 30 35 (˚C)
3 Shipping condition of copier (within 2 weeks)
(%)RH
90
60
20
-20
4 Supply storing condition
(%)RH
90
30 45 (˚C)
3 Numeral
The end digit of the year of coating.
4 Numeral or X, Y, Z
Indicates the month of coating.
X means October, Y November, and Z December.
5 6 Numeral
Indicates the day of coating.
7 Numeral or X, Y, Z
Indicates the month of packing.
X means October, Y November, and Z December.
8 9 Numeral
Indicates the day of packing.
F Alphabet
Indicates the factory of production. "A" is the code for Nara plant.
B. Developer and toner
The lot number of toner is put on the individual cartridge package and on the group package, and that of toner is put on the bag and the group package.
The lot number is of 7 digits, each digit indicating as follows:
1 2 3 4 5 6 7
1 Alphabet
Indicates the factory of production.
2 Numeral
Indicates the end digit of the year of production.
3 4 Numeral
Indicates the month of production.
5 6 Numeral
Indicates the day of production.
7 Numeral
Indicates the sub lot number.
Normal
1
C
2
A
3
When a change is made on the product in the same operation system:
1
Normal
5 2
C
6 3
A
7 4
B
8
A,B,C: Operation system
B
4
10
-5 40 (˚C)
Storage period:
OPC drum Max. 30 months from production
Developer/Toner Max. 24 months from production
5 Identification of production number
A. OPC drum
The lot no. is of 10 digits. Each digit indicates as follows. This number is printed on the F side flange.
1 2 3 4 5 6 7 8 9 10
1 Numeral
Indicates the OPC drum sensitivity.
2 Alphabet
Indicates the model code. "M" is the code for this model.
2 – 4
[3] EXTERNAL VIEW AND INTERNAL STRUCTURE
1. External view and internal structure (SF-2514 as the example model)
1 2 3 4 5 6
7
8
9
13 12 11 10
16
15
14
Upper unit
17
1 8
No.
1 Exit tray
Name
4 Document cover
7 Manual bypass guide
F Paper tray
I Power switch
L Toner cartridge
O Fusing unit (High temperature)
20 19
No.
2 SPF exit tray
5 Original guide
8 Manual bypass
G Front cover
Name
J Toner cartridge release lever
M Open/close lever
P Fusing unit lever
3 – 1
Lower unit
No.
3 SPF tray
6 Document table
9 Operation panel
H Release button
Name
K Handel
N Photoconductive drum
2. Operation panel
SF-2314
1 2
EXPOSURE
AUTO
MANUAL
PHOTO
1 2 3 4 5
3 4
TRAY SELECT
5 11
6 7 8
1
6
2
7
3
8
4
9
C
0
5
POWER SAVE
14 15 16 17 18
SF-2414
1 2
EXPOSURE
AUTO
MANUAL
PHOTO
1 2 3 4 5
3 4 5 10 11
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2x 11
ZOOM
8 1 2x 11 10 14
8 1 2x 14 8 1 2x 11
8 1 2x 11 5 1 2x 8 1 2
%
12
1
6
2
7
3
8
4
9
C
0
5
POWER SAVE
6 7 8 9 13
14
15 16 17 18
SF-2514
1 2 19 20
EXPOSURE
AUTO
MANUAL
PHOTO
1 2 3 4 5
3 4 5 10 11 12
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2x 11
ZOOM
8 1 2x 11 10 14
8 1 2x 14 8 1 2x 11
8 1 2x 11 5 1 2x 8 1 2
%
1
6
2
7
3
8
4
9
C
0
5
POWER SAVE
6 7 8 9 13
No.
1
4 Misfeed indicator
Name
Auto/manual/photo key and indicators
No.
2
Name
Light and dark keys and exposure indicators
5 Toner required indicator
7 Tray select key and indicators
F Zoom indicator
8
G
Paper required indicator
Copy quantity display
I Zoom keys
L Clear key
O SPF misfeed indicator
J
M
P
10-key pad
Print button and ready indicator
SPF indicator
14 15 16 17 18
No Name
3 Developer replacement lamp
6 Maintenance required indicator
9 Copy ratio selector key and indicators
H Copy ratio display key
K Zero/read-out key
N Power save indicator
3 – 2
3. Cross section (SF-2514 as the example model)
5
4
3
2
6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
1
42
No.
1 No.3 mirror
Name
4 SPF transport roller
7 SPF PS roller lower
F SPF document takeup roller
I Discharge lamp
L Copy lamp
O Blank lamp
R No.5 mirror
U Manual feed take-up roller
X Tray transport follower roller
[ Option tray transport roller
^ Transfer charger a Upper heat roller d Lower separation pawl
41 40 39 38 37 36 35 34 33 32
No.
2 No.2 mirror
Name
5 SPF document exit roller
8 SPF document feed reverse roller
G Drum separation pawl
J Main charger unit
M Lens unit
P Developer magnet roller
S Developer tank
V Manual paper feed follower roller
Y Transport roller (Upper)
\ Resist roller
_ Photoconductor drum b Lower cleaning roller e Upper separation pawl
No Name
3 SPF transport follower roller
6 SPF PS roller upper
9 SPF document feed roller
H Cleaner unit
K No.1 mirror
N No.6 mirror
Q No.4 mirror
T Manual paper feed roller
W Tray paper feed takeup roller
Z Tray paper feed roller
] Resist roller
‘ Suction belt c Lower heat roller f Heater lamp
27
28
29
30
31
21
22
23
24
25
26
3 – 3
4. Switches, sensors, detectors (The SF-2514 as the typical example)
7
2
3
1
4 5 6
9
8
11
10
No.
Abbreviation
1 POD
2 MHPS
3 SDSW
4 SPOD
5 SPPD
6 SPFD
7 LHPD
8 PWD
9 PPD
F CPED1
G PID (MFD1)
Function
Paper out sensor
Mirror home position sensor
SPF cover open/close sensor
SPF document out sensor
SPF document transport sensor
SPF document set sensor
Lens home position sensor
Paper size (large/small) sensor
Paper transport sensor
Tray paper empty sensor
Paper sensor for Manual paper feed unit
(only single Manual Paper feed unit)
Type
Transmission photo sensor
Transmission photo sensor
Lead switch
Transmission photo sensor
Transmission photo sensor
Transmission photo sensor
Transmission photo sensor
Transmission photo sensor
Transmission photo sensor
Transmission photo sensor
Transmission photo sensor
Operation
H when paper is sensed.
H at the home position.
H when the cover is open.
L when paper is sensed.
H when paper is sensed.
L when a document is set.
H at the home position.
L with the large size.
L when paper is sensed.
H when paper is present.
L when the cover is open.
3 – 4
5. Clutches, solenoids (The SF-2514 as the typical example)
1 2 3
No.
Abbreviation
1 SRRC
2 SPM
3 PSPS
4 RRC
5 TRC
6 MPFS
7 CPFC1
8 SPFM
Name
SPF resist roller clutch
SPF document transport clutch
Paper separation solenoid
Resist roller clutch
Transport roller clutch
Manual paper feed solenoid
Tray paper feed clutch
Multi paper feed clutch
6
Function and operation
For SPF resist roller rotation
For SPF transport roller rotation
For paper separation solenoid drive
For resist roller rotation
For transport roller rotation
For takeup roller pressing
For paper feed roller rotation
For multi paper feed roller rotation
4
8
5
7
3 – 5
6. Motors (The SF-2514 as the typical example)
8 2 3 4
1
No.
Abbreviation
1 VFM
2 SPFM
3 CFM
4 MM
5 LM
6 MRM
7 TM
8 SPFFM
Name
Paper exit fan motor
SPF motor
Cooling fan motor
Main motor
Lens motor
Mirror motor
Toner motor
SPF cooling fan motor
6
5
7
Function
For ventilation of the fuser unit.
For cooling the machine and removing ozone.
For SPF drive
For cooling the optical system
For the main body drive and the option drive
For the optical lens drive
For the optical mirror base drive
For toner supply
For cooling the optical system in the SPF mode
Type
DC brushless
DC brushless
DC brushless
DC brushless
DC stepping
DC brushless
DC synchronous
DC brushless
3 – 6
7. PWBs (The SF-2514 as the typical example)
8 2 1 4 9 3
No.
1 AC circuit PWB
Name
2 Discharge lamp PWB
3 Main PWB
4 AE PWB
5 Blank lamp PWB
6 Lower unit PWB
7 High voltage PWB
8 Operation PWB
9 SPF control PWB
Description
AC power input
Discharge lamp drive
Main body control
Document density auto exposure detection
Blank lamp control
Lower unit parts control
Supply of the process high voltage and the developer bias voltage.
Operation input, display control
SPF control
5
7
6
3 – 7
[4] UNPACKING AND INSTALLATION
1. Packing drawing (SF-2514)
List of packing materials and accessories
Packing case
SPF tray
SPF cover protection material
Body
Name
8
9
6
7
4
5
1
2
Polyethylene bag for paper exit tray
Vinyl sheet for body
Bottom case
Bottom case pad (L)
10 Bottom case pad (R)
11 AC cord sleeve
12 Paper exit tray
14 Instruction Manual unit
Instruction Manual
Dust cover (For some agents)
Warranty card (For Austraria)
Warranty resistration (For U.K.)
Installation report (For Europe except U.K.)
15 Consumable parts kit
Developer
Toner for installation
1
1
1
1
Q’ty
1
1
3
1
1
1
1
1
1
1
1
1
1
1
2. Installation
Installation conditions
The following installing conditions must be satisfied to assure the normal operations of the machine.
(1) Environment
1 Keep the machine away from direct sunlight and avoid installation near a window or in a bright place.
(Draw the curtain and close the blind shutter completely.)
The plastic parts and the original cover may be deformed by direct sunlight. Avoid installation near a window even with frosted glass.
4 – 1
2 Avoid installation in high temperature or high humitity environments. Also, avoid installation where temperature or humidity may change quickly. (e.g., near an air conditioner).
Otherwise copy papers may be dampened and condensation may be generated in the machine. This may result in paper jams or poor copy quality.
(Ideal The best suitable conditions for machine operation:
20˚C 25˚C: 65
±
5%RH
(Temperature/humidity range): 15˚C
∼
30˚C (59˚F
∼
86˚F),
20%
∼
85%
65% for 35˚C (95˚F)
% RH
85
65
Humidity
20
15
(59˚)
30 35 ˚ C
(86˚) (95˚)
(˚F)
5 Install in a well ventilated place.
6 Avoid installation where there is inflammable gases or ammonium gases.
Installation near a diazonium copier may degrade copy quality and cause malfunctions.
3 Avoid installation where there is a lot of dust or vibrations.
If dust enters the machine, it may degrade copy quality and cause malfunctions.
7 Install near a power outlet.
(2) Space around the machine
Allow a space of about 15 cm (6 inches) between the rear side of the machine and the wall for ventilation of the cooling fan. Also allow sufficient space around the machine for operations.
4 Avoid installation on an unstable surface.
To assure the proper operations, install on a level surface.
(3) Installing table
Use a level (UKOGM0054CSZZ) to install the machine horizontal-
ly.
(Allowable tilt: 5 mm between the front and rear frames)
(Note) If the machine is not installed horizontally, toner density control may not function properly. This may result in poor copy quality.
4 – 2
(4) Power source
1 The power source should be the rated voltage
±
10% with the capacity corresponding to the max. power consumption.
2 Do not use an extension cord, or operate any other equipment from the same wall outlet.
[In the case of SF-2314/2414/2514 with SF-MF14 (Optional) equipped.]
Open the paper feed tray on the right side of the copier.
Remove the No.4/No.5 mirror unit fixing screws (2 pcs.).
Then close the paper feed tray.
(5) Grounding
To avoid electrical hazard, use the properly grounded wall outlet only.
(Carrying the machine)
When carrying the machine, remove the copy tray and hold the dent portions on the bottom.
3. Installation procedure
(1) Optical system unlocking
1 Unlock the No.2/No.3 mirror unit.
Remove the No.2/No.3 mirror unit fixing screw (1 pc.) on the left side of the copier.
Mirror unit fixing screw
(2) Cassette setting
1 Pull out the cassette.
Lift the cassette and slowly pull it out from the copier until it stops.
Mirror unit fixing screw
2 Unlock the No.4/No.5 mirror unit.
Remove the No.4/No.5 mirror unit fixing screws (2 pcs.) on the right side of the copier.
2 Loading copy paper.
Set the copy papers in the cassette. Do not exceed the limit line indicator.
Mirror unit fixing screw
4 – 3
Gently insert the cassette fully into the copier. 4 Remove the developing unit.
Loosen the fixing screw (step screw) which is fixing the copier and the developing unit, and slowly pullout the developing unit and
Lenz hold Plate from the copier.
Fixing screw
(step screw)
Lenz hold plate
(SF-2414/2514 only)
1
(3) Developer setting
1 Open the front cabinet.
Push the front cabinet open buttons which are on the left and right sides of the copier, and open the front cabinet.
Front cabinet open button
2
Developer unit
5 Remove the developer tank.
Slightly open the pawl which is fixing the developing unit and the developer tank with a screw driver, and pull out the developer tank.
Developing unit
2 Open the toner cartridge.
While pressing the toner cartridge release lever (B), open the toner cartridge.
Release lever (B)
Developing tank
Pawl
6 Supply developer.
Supply a bag of developer to the developer supply port of the developing unit.
At that time, move the bag of developer to supply developer evenly.
Developing
Toner cartridge
3 Remove the toner cartridge.
Slowly turn the toner cartridge clockwise to remove.
2
Developing unit
7 Install the developer tank.
Insert the developer tank to the developing unit along the guide of the developing unit.
At that time, check that the developer tank is securely fixed in the developing unit.
1
Developing unit
Developing tank
4 – 4
8 Install the developing unit.
Slowly insert the developing unit into the copier along the guide of the copier until it stops.
Tighten the fixing screw which was removed in procedure (D), and fix the developing unit to the copier.
Fixing screw
(step screw)
4 Close the front cabinet.
2
1
Developer unit
(4) Toner supply
1 Shake the toner cartridge up and down.
Shake the toner cartridge up and down 9 to 10 times.
(5) Toner density sensor level check
1 Turn on the power switch of the copier.
2 Install the toner cartridge.
Install the toner cartridge to the copier along the guide of the copier.
Turn the toner cartridge counterclockwise to lock.
2 Adjust the developer level.
(a) Perform the key operations of simulation 25 sub 2.
C
2
0
5
0 C
2
1
With the above key operations, simulation 25 is performed and the developer is stirred for 3 minutes.
(b) After stirring the developer for 3 minutes, the toner density level is read by the main PWB.
During stirring, the toner density sensor level is displayed on the MULTI COPY display. (Range: 1
∼
99)
[Note] If the simulation is cancelled during execution, the automatic reading cannot be performed. Do not cancel the simulation during execution.
(c) Press the CLEAR key three times to cancel simulation 25. c c c
2
3 Supply toner.
Remove the sheet from the toner cartridge and supply toner.
Slowly return the toner cartridge to the original position.
4 – 5
(6) Accessory attachment
1 Attach the copy tray.
(2) No.4/no.5 mirror unit (Mirror base C) lock
1 Perform locking with the unit at its home position and with the external fitting installed.
2 Lock the unit with two mirror unit fixing screws. (The hole in the right cabinet)
2 Attach the document tray.
[SF-2514 only]
2
1
Mirror unit fixing screw
[SF-2314/2414/2514 with SF-MF14 (Optional) equipped.]
1 Turn off the power at the 64% position. Perform locking with the external fitting installed.
4. Locking procedure for transit or repacking
In general, reverse the procedures in "3. Installation procedure." For the optical system lock, perform the following procedure.
(1) No.2/No.3 mirror unit (Mirror base B) lock
1 Perform locking with the unit at its home position (normal copy position) with the power ON and with the mirror stopped and with the external covers installed.
2 Lock the unit with the mirror unit fixing screw. (The hole in the left cabinet)
Mirror unit fixing screw
2 Open the paper feed tray at the right side of the body, and fix the unit with two fixing screws. (Two holes in the right cabinet)
Mirror unit fixing screw
4 – 6
5. Optional paper feed unit (SF-CM14),
Installation Manual
For use with compatible SHARP copies.
See SHARP copier Installation Manual to determine suitability.
Included parts
(2) Remove the paper tray from the main copier unit.
1 While lifting up slightly, gently pull out on the paper tray until it stops.
2 Then, lift up on the paper tray with both hands and remove it.
Mounting screw A,
1 pc
[SF-2414/2514 only]
Mounting screw B,
2 pc
(1) Set the main copier unit on the paper feed unit.
1 Lift the main copier unit by the grips, place it upon the paper feed unit, and slip the positioning holes (3 locations) on the bottom of the main copier unit over the 3 positioning pins on the paper feed unit.
[NOTE] This procedure should always be performed by two people.
Grip
Positioning pin
Grip
(3) Open the upper unit of the main copier unit.
1 Press the release buttons on the left and right sides of the main copier unit’s front cover, then open the front cover.
2 Push the upper half release lever (green) to the right and down, then gently open the upper unit.
Front cover release buttons
Positioning pin
Front cover
Upper half
release lever
4 – 7
Upper unit
(4) Connect the main copier unit and the paper feed unit.
1 Secure mounting screw A (1 pc) in the main copier unit (1 location).
Mounting screw A
6. Optional multi bypass feeder unit
Installation Manual
(1) Open the upper unit of the main copier unit.
1 Press the release buttons on the left and right sides of the main copier unit’s front cover, then open the front cover.
2 Push the upper half release lever (green) to the right and down, then gently open the upper unit.
(2) Release the lock for the manual bypass unit and remove the manual bypass unit.
1 Release the manual bypass unit by pressing upward on the rock claws (green; 2 locations) which lock it in place in the main copier unit’s upper unit.
The manual bypass unit will come out toward you slighly.
2 Pull out upon the manual bypass unit to remove it from the main copier unit.
Manual bypass unit
Then, gently close the upper unit and front cover.
2 Connect the paper feed unit and the main copier unit by securing mounting screw B (2 pcs) in the mounting holes (2 locations) located in the slot from which the paper tray was removed.
Mounting screw B
Rock claw (latch) Rock claw (latch)
* After these procedures have been completed, reload the paper tray which was removed in step 2.
3 Insert the paper feed unit connector into the jack on the side of the main copier unit.
Connector
4 – 8
(3) Mount the multi bypass feeder unit onto the main copier unit.
1 Slide the positioning pins which project from the multi bypass feeder unit in to the grooves in the main copier unit, then push the multi bypass feeder unit into place to in stall it.
At this time, to be sure that the multi bypass feeder unit is securely installed, push down once more on the fourcorners of the unit. (If it has not been securely installed, "CH" may appear in the COPIES
MADE display when the power is turned on.)
Multi bypass feeder unit
Rock claw (latch)
Positioning pins
Rock claw
(latch)
Positioning pins
Multi bypass feeder unit
2 Close the upper unit of the main copier unit.
4 – 9
[5] GENERAL DESCRIPTIONS OF
EACH SECTION
The general descriptions of the following sections are given:
1 Paper feed section
2 Separation, transport section
3 Fuser, paper exit section
4 Developer section
5 Optical system
6 Image forming section
7 SPF section (SF-2514 only)
Internal structure
7
3
2
6
5
4
1
When the CPCF turns off, rotation is stopped, and the takeup roller is pushed up by the roller release arm spring to the position.
(Manual paper feed operation) Multi
When the solenoid B (MPFS) turns on, the takeup roller falls and the gate rises.
Almost simultaneously the solenoid A (MPFC) turns on and the takeup roller and the paper feed roller turns to perform the paper feed operation.
1. Paper feed section
The paper feed system is in two ways: the tray feed and the manual feed. The cassette is of the universal type and has the capacity of
250 sheets. It is attached and detached at the front cabinet, that is, the front loading system.
The manual paper feed is single for the SF-2314 and multi for the
SF-2414/2514. (The multi paper feed unit (SF-MF14) is an option for the SF-2314 only.)
In addition to the standard cassette (250 sheets), the optional cassette module (SF-CM14, 250 sheets) can be added.
(Tray paper feed operation)
The cassette paper feed clutch (CPFC) turns on, the paper feed roller shaft, the paper feed roller, and the takeup roller rotate. At the same time, the roller release arm is lowered by the limiter spring. As a result, the takeup roller falls by its own weight to reach the paper surface, performing the paper feed operation.
ON
When the PPD turns on, the MPFS turns off and the RRC turns on.
Almost simultaneously the MPFC turns off to return the roller and the gate to the initial state.
OFF
5 – 1
2. Separation, transport section
After passing the resist roller section, the paper is transported to the transfer section. After transfer, the paper is separated from the drum by the separation electrode and the drum separation pawl, then transported to the fuser section by the transport belt.
3. Fuser, paper exit section
The toner image transferred on the paper is fused by the heat and pressure of the upper and the lower heat rollers. After fusing, discharge static electricity on the paper with the discharge brush. Then the paper is discharged to the copy tray.
4. Developer section
4-1. General descriptions
(1) Two-component developer
The developer is composed of toner and carrier.
Carrier serves as a medium for attaching toner onto the electrostatic image on the photoconductor drum.
By stirring toner and carrier, they are rubbed to be charged positive
(+) and negative (–) respectively.
Since developer will deteriorate to degrade copy quality, it should be replaced regularly.
(2) Two-component magnetic brush development
The rotatable non-magnetic sleeve is provided over the magnet roller and is rotated.
Carrier forms a magnetic brush on the sleeve surface by magnetic force to attach toner onto the electrostatic image on the photoconductor drum.
(3) Developing bias
When the photoconductor is charged and exposed to light (exposure), the surface potential (voltage) of the photoconductor will not be lost completely. (The residual potential remains.)
Toner is attracted to the photoconductor by this residual potential, dirtying the photoconductor. As a result, a dirty copy of white background is generated.
To prevent against this, a voltage of the same polarity and higher than the residual potential is applied to the MG roller, preventing toner from being attached to the photoconductor surface.
Residual potential < DV BIAS
MG roller
Toner
Carrier
DV BIAS
-200V
Developing bias voltage
• Temperature control
Thermistor
Heat roller surface temperature detection
CPU
Heat roller
Heater lamp
The heat roller is heated by the heater lamp.
(When the heat roller surface temperature is 180 C˚ or lower, the heater lamp is actuated)
(Heater trouble)
Self diag display
Thermostat Contact open (*)
Abnormal high
temperature
• Abnormally high temperature (H3)
•
Abnormally low temperature (H4)
• Thermistor disconnection (H2)
* When the thermostat contact is open, it is required to press the reset button in the upper side of the thermostat. (The contact is not reset automatically.)
5 – 2
5. Optical system
5-1. General descriptions
• The optical system is composed of the fixed focus lens and six mirrors.
Since the fixed focus lens is employed, No.4/No. 5 mirror base is moved as well as the lens to change the distance between the document and the drum (OID, Original Image Distance) for reduction and enlargement.
To move the lens and No.4/No. 5 mirror unit, he stepping motor is driven by the signal from the main control PWB to allow zooming of 0.70 to 1.22 (inch series: 0.64
∼
1.29) with 1% increment. (The
SF-2314 has no zooming function, and its lens and No.4/No.5
mirror base are fixed.)
4 16 3
• Exposure is adjusted by changing the voltage of the copy lamp.
The copy lamp unit is provided with the AE sensor for detection of the original density to adjust the light quantity of the copy lamp according to the original density.
• For exposure, the slit exposure system is employed where the light source is moved. (The original table is fixed.)
11
2 1
7 12 13
5 10
15 9 17 6 8 14
1 Copy lamp
4 No. 2 mirror
7 No. 4 mirror
F No. 2/No. 3 mirror base unit
I Mirror motor
L Mirror home position sensor
2 Reflector
5 No. 3 mirror
8 No. 5 mirror
G Copy lamp unit
J Lens/No. 4/No.5 mirror base drive motor
M Auto exposure sensor
(1) Original table
The original table is fixed, and originals are set to the left frame side as the reference.
(2) Copy lamp
100V system (285W)
200V system (285W)
3 No. 1 mirror
6 Lens
9 No. 6 mirror
H No. 4/No. 5 mirror base unit
K Lens home position sensor
(3) Mirror
Six mirrors are used.
No. 1 mirror is provided in the copy lamp, No. 2/3 mirrors at the
No.2/3 mirror base, No. 4/5 mirrors at the No. 4/5 mirror base. The
No.2/3 mirror base is scanned during copying. The No.4/5 mirror base is moved to change the distance between the original and the photoconductor during zoom copying.
(4) Lens (Fixed focus lens)
• Construction (One group 3 lenses)
• Brightness (F8)
• Focus (175mm)
(5) Lens home position sensor (LHPS)
This sensor is used to sense the lens position. The sensor output signal serves as the basic signal to control the copy magnification ratio.
5 – 3
(6) Lens base
The lens is mounted to this lens base. It is moved in the paper feed direction in reduction copying, and in the paper exit direction in enlargement copying.
(7) Lens drive shaft
This shaft is to control the optical axis of the lens in zoom copying.
The lens follows on the slide base shaft.
(8) Lens drive wire
The wire is used to drive the lens base and the 4/5 mirror base.
(9) No. 4/5 mirror base
The No. 4/5 mirror is installed to this base. It is moved in zoom copying in order to fit the distance between the original and the photoconductor.
(10) Mirror motor
The mirror motor is a stepping motor, and used to move the copy lamp unit and the No. 2/3 mirror base in order to obtain the rpm corresponding to each magnification ratio.
(11) Mirror home position sensor (MHPS)
Used to sense the home position of the copy lamp unit. This sensor is a photo transmission type sensor.
(12) No. 2/3 mirror base
The No. 2/3 mirrors are attached to this base. The mirror base is scanned by the mirror motor.
(13) Copy lamp unit
This is composed of No. 1 mirror, the thermal fuse, the copy lamp, the exposure adjustment plate, and the reflector, and is scanned by the mirror motor.
(14) Thermal fuse
The thermal fuse is closely attached to the reflector in order to prevent against abnormal temperature rise in the optical system. In case of abnormal temperature rise, the power for the copy lamp is turned off.
100V system (117˚C)
200V system (117˚C)
(15) Reflector
Light from the copy lamp is reflected onto the original.
(16) Exposure adjustment plates
Three exposure adjustment plates are attached to the copy lamp unit to adjust the exposure balance in the front and the rear frame direction.
(17) Mirror base drive wire
This wire is used to transmit the drive power of the mirror motor to the copy lamp unit and the No. 2/3 mirror base to scan the mirror base.
(18) Lens drive motor
This is a stepping motor, which is used to move the lens and the No.
4/5 mirror base.
(19) AE sensor
The original density is detected with the intensity of the copy lamp light reflected from the original. The measurement area is the mirror base scan area of about 100mm at the center.
The element is a photo diode.
5-2. Basic operations
(Relationship among the original, the lens and the image in each magnification ratio)
Normal copy: The distance between the surface of original on the table glass and the lens is made equal to the distance between the lens and the exposure surface of the photoconductor to make the original and the image equal to each other.
Enlargement copy: The lens is nearer to the original when compared with the normal copy to shorten the distance between the original surface and the lens.
The No. 4/5 mirror base is positioned further away from the lens to increase the distance between the lens and the exposure surface of the photoconductor.
The distance between the original and the exposure surface of the photoconductor is greater than that in the normal copy.
Reduction copy: When compared with the normal copy, the lens comes closer to the photoconductor to increase the distance between the original and the lens. The distance between the lens and the exposure surface of the photoconductor is decreased.
The No. 4/5 mirror base is positioned further away from the lens.
The distance between the original and the exposure surface of the photoconductor is longer than that in the normal copy.
5 – 4
The mirror base scan speed (mirror motor rpm) is changed to zoom.
Copy paper feed direction
The lens and the mirror are moved to zoom.
The mirror scan speed is changed to zoom.
Mirror scan speed Drum rotating speed < Mirror scan speed
Enlargement
(Optical system dirt correction)
The SF-2314/2414 perform dirt correction by changing the copy lamp intensity according to the dirt degree in the optical system (the copy lamp unit, No. 1 mirror, No.2 mirror, No.3 mirror) to prevent against remarkable degrading of copy quality.
The reference value is the AE sensor output value which is obtained when the reference plate is exposed with the copy lamp voltage of
67.7V (135.4V) at power ON.
This value is checked with sim 44-02.
Reference plate (Glass holder)
Table glass
Copy lamp light quantity "UP"
Automatic exposure sensor
Original
The lens and the mirror are move to zoom.
CPU
Reference value
> Measured value
Correction data output
(Copy lamp control in each copy density)
Reduction
[MAX. 85V(170V)]
CLV
(Copy lamp application voltage)
80
70
60
50
40
(V)
[MIN. 40V(80V)]
EX1 2 3 4 EX5
5 – 5
6. Copy process
(1) Photoconductor
• This model uses OPC (organic photoconductor) as photoconductive material.
OPC layer CTL (Electric charge moving layer)
CGL (Electric charge generating layer)
Aluminum layer
(2) Process diagram
Mirror lens
Original
Copy lamp
High voltage unit
Main corona unit
Discharge lamp
Charging
Discharging
Exposure
Exposure
Blank lamp
High voltage unit
Development
Cleaning blade Cleaning
Waste toner collection
Separation
Paper exit Fusing Separation
Transfer
Heat roller Separation corona unit
Heater lamp High voltage unit
Transfer charger
High voltage unit
Drum upper image/paper synchronization
Toner
Developer
Resist roller
Paper feed roller
Transportroller
Manual paper feed
Paper cassette
Image forming process
Paper transport path
Discharge lamp
Cleaning blade
Main corona unit
Blank lamp
Developer unit
MG roller
Resist roller
Seperation pawl
Seperation corona unit Transfer corona unit
5 – 6
(3) Actual process
Step 1 (charging)
The OPC drum is negatively charged by corona discharge of the transfer charger . Positive charges are generated in the aluminum layer.
Aluminum layer
CGL
CTL
OPC drum
Discharge lamp
Main corona unit
Cleaning blade
Seperation pawl
Blank lamp
Developer unit
MG roller
Resist roller
Seperation corona unit Transfer corona unit
High voltage unit
Transfer corona unit
Step 2 (Discharging)
When the OPC drum is exposed to the discharge lamp light, positive and negative charges are generated in the OPC drum CGL. The negative charges move to the positive charges generated in the aluminum layer in step 1, and the positive charges move to the negative charges on the OPC drum surface charged in step 1. The positive charges and the negative charges are neutralized each other in the aluminum layer and on the OPC drum surface. As a result, the
OPC drum surface potential becomes 20V
∼
30V.
Light
Discharge lamp
OPC drum
Discharge lamp
Cleaning blade
Main corona unit
Blank lamp
Developer unit
MG roller
CTL
CGL
Aluminum layer
Resist roller
Seperation pawl
Seperation corona unit
Transfer corona unit
By performing step 1 (Charging) and step 2 (Discharging), the photoconductor itself is initialized to stabilize the drum surface potential.
5 – 7
Step 3 (Main Charging)
By negative discharging of the main charger, uniform negative charges are applied to the OPC drum surface.
The OPC drum surface potential is controlled by the screen grid voltage to maintain the grid voltage at a constant level.
• When the drum surface potential is lower than the grid voltage, electric charges generated by discharging of the charger go through the screen grid to charge the drum surface potential until it becomes equal to the grid voltage.
• When the drum surface potential virtually reaches the grid potential level, electric charges generated by discharging of the charger flows through the electrode of the screen grid to the high voltage unit grid voltage output circuit, thus always maintaining the drum surface potential at a level virtually equal to the grid voltage.
• The main corona unit employs the scorotron system to charge the photoconductor surface to a certain level uniformly.
In addition, the conventional corona wire is replaced with the corona charging mechanism by saw-teeth plate (stainless steel plate of 0.1 mm thick). In corona discharge, oxygen molecules in the air are ionized to generate ozone (O
3
). The mechanism restrict the generation of ozone.
Main corona unit
High voltage unit
Screen grid
Discharge lamp
Cleaning blade
Main corona unit
CTL
CGL
Aluminum layer
OPC drum
Blank lamp
Developer unit
MG roller
Resist roller
Seperation pawl
Seperation corona unit Transfer corona unit
Step 4 (Exposure)
Light from the copy lamp is radiated on the document, and the optical image of the document is reflected by the mirrors and projected through the lens to the OPC drum.
The lighter portion of the document reflects more light (high intensity) to the OPC drum, and the darker portion of the document reflect less light (low intensity) to the OPC drum. Positive or negative charges are generated in the CGL of the OPC drum where lights are radiated.
Negative charges generated in the CGL move towards the positive charges in the aluminum layer generated in step 3. While the positive charges in the CGL move towards the negative charges on the CPU drum surface generated in step 3. Therefore, positive charges and negative charges are neutralized in the aluminum layer and the OPC drum surface at the light radiating position, decreasing the OPC drum surface potential. The CGL electric charge generating amount increases in proportion to the document density, that is, reflected light intensity (the OPC drum surface intensity). Therefore, electric charges are generated less in the CGL layer corresponding to the lighter density of document (higher intensity of the OPC drum surface), and a greater quantity of the negative charges on the OPC drum surface is neutralized, decreasing the OPC drum surface potential more.
On the contrary, electric charges are generated more in the CGL layer corresponding to the darker density of document (lower intensity of the OPC drum surface), and less quantity of the negative charges on the CPU drum surface is neutralized, decreasing the OPC drum surface less. Therefore, the OPC drum surface potential corresponding to the lighter portion of the document is lower, and that corresponding to the darker portion of the document is higher. Latent static-electricity images are formed in the above manner.
5 – 8
Low intensity in the area corresponding to the darker density portion of the document
Medium intensity in the area corresponding to the medium density portion of the document
HIgh intensity in the area corresponding to the lighter density of the document
Aluminum layer
CTL
CGL
CTL
CGL
Aluminum layer
Main corona unit
Blank lamp
Surface potential
(High)
Surface potential
(Medium)
Surface potential
(Low)
OPC drum
Discharge lamp
Cleaning blade
Developer unit
MG roller
Resist roller
Seperation pawl
Seperation corona unit Transfer corona unit
OPC drum
Step 5 (Development)
Toner is attached to the latent static-electricity images on the drum surface to change them to visible images. The two-component magnetic brush development system charges toner positively by friction with carriers, and toner is attached to negative charges on the drum surface. The potential in the darker document projecting area (low intensity) is high (much negative charges) and attracts more toner.
The potential in the lighter document projecting portion (high intensity) is low (less negative charges), and attracts less toner.
OPC drum
Aluminum layer CGL CTL
Main corona unit
Blank lamp
Higher surface potential
(Much negative
( charges)
Medium surface potential
(Less negative
( charges)
Lower surface potential
(No negative
( charges)
MG roller
-200V
High voltage unit bias voltage
At that time, a bias of –200V is applied to the MG roller (magnet roller), which is provided for preventing toner from being attracted by the residual voltage (about –80V to –100V) in the lighter portion after exposure.
Discharge lamp
Cleaning blade
Developer unit
MG roller
Resist roller
Seperation pawl
Seperation corona unit
Transfer corona unit
5 – 9
Step 6 (Transfer)
The transfer paper is charged higher than the OPC drum surface potential by strong negative discharge of the transfer charger, making the binding force between the transfer paper and toner stronger than that between the drum and toner, attracting toner to the transfer paper.
Aluminum layer
CGL
CTL
OPC drum
Discharge lamp
Toner
Transfer paper
Cleaning blade
Seperation pawl
Main corona unit
Blank lamp
Developer unit
MG roller
Resist roller
Seperation corona unit Transfer corona unit
Transfer corona unit
High voltage unit
Step 7 (Separation)
After transfer, the copy paper and the drum are negatively charged.
Since, however, the negative potential of the copy paper is higher than that of the drum, a attraction force is applied between the drum and the copy paper. To avoid this, AC corona is applied to the copy paper by the separation charger to decrease the copy paper potential to the same level as the drum surface potential. The attraction between the copy paper and the drum is weakened by this, allowing separation of the copy paper by its own extending force. If the copy paper is not separated by the separation charger, it is separated by the separation pawl mechanically.
Aluminum layer
CGL
CTL
OPC drum Discharge lamp
Toner
Transfer paper
Cleaning blade
Seperation pawl
Main corona unit
Blank lamp
Developer unit
MG roller
Resist roller
Seperation corona unit Transfer corona unit
High voltage unit
Seperation corona unit
5 – 10
Step 8 (Cleaning)
Residual toner on the drum is removed by the cleaning blade. The removed toner is sent to the waste toner container by the waste toner transport screw.
Blade CTL CGL Aluminum layer
Discharge lamp
Main corona unit
Cleaning blade
Blank lamp
Developer unit
MG roller
Residual toner
OPC drum
Resist roller
Seperation pawl
Seperation corona unit
Transfer corona unit
Step 9 (Discharging)
When the OPC drum is exposed to the discharge lamp light, positive and negative charges are generated in the OPC drum CGL. The negative charges generated in the CGL move towards the residual positive charges in the aluminum layer, while the positive charges in the CGL move towards the residual negative charges on the OPC
Discharge lamp drum surface. Therefore, the positive and the negative charges are neutralized in the aluminum layer and on the OPC drum surface, removing the residual charges on the OPC drum surface. As a result, the OPC drum surface potential becomes 20V
∼
30V.
Main corona unit
Blank lamp
Discharge lamp
Residual charge
OPC drum
Cleaning blade
Developer unit
MG roller
CTL
CGL
Aluminum layer Residual charge
Resist roller
Seperation pawl
Seperation corona unit
Transfer corona unit
(4) Transit of photoconductor drum surface potential
Transfer Separate
(OFF)
Clean DL Charge Exposure BL Develop
-800V
Dark area
-600V
-400V
-200V
Light area
Developing bias voltage
Transfer Separate Clean DL
Residual potential
T (Time)
5 – 11
(5) Process correction system
1) Outline of the correction system
This model is provided with the correction system for the optical unit and the photoconductor drum unit. The combination of the two correction systems provides stable clear copy.
These functions are to maintain the copy quality for a long time and to correct the characteristics of the parts, and are controlled by the software and invisible from the outside.
2) Correction operation
1. Photoconductor drum unit correction (Photoconductor drum sensitivity correction)
Cleaner
Develop
OPC drum
Change the tickness of the carrier transport layer (CTL).
By the developper.
By the cleaner blade.
Fig. 2
VCL
Correction level
(CL voltage)
Fig. 1
(NEW)
CTL
CGL
(USED)
CTL
CGL
Wear down
Manual mode exposure 1
Photo mode exposure 1
Manual mode exposure 5
Photo mode exposure 5
Fig. 3
0 100
Correction level is initialized by Simulation 46 or by replacing the photoconductor drum.
200 300 400
Drum rotating time
The photoconductor drum is subject to mechanical stress by the cleaning blade, resulting in wear in the OPC layer. In addition to that, the photoconductor drum receives optical stress from the copy lamp.
These stresses reduce the photo sensitivity of the photoconductor drum, producing unnecessary dirt copy. This trouble is removed by adjusting the copy lamp voltage. For this model, however, to reduce the number of service calls, the copy lamp voltage is automatically dropped according to the reduction in the photo sensitivity of the photoconductor drum to correct it.
500 min
The drum rotating time from installation of a new photoconductor drum is counted by the timer and the copy lamp voltage is corrected in every mode. (Refer to Fig. 3.)
The correction is performed within the range of the max. supply voltage of the copy lamp. (The rotating time of the photoconductor drum can be checked with Simulation 44-4.)
* The correction level is initialized by Simulation 46 or by replacing the photoconductor drum.
* Replace the OPC drum for every 40K copies. After replacement, be sure to reset the drum count value to "0" with SIM 24-7.
The replacement timing of the OPC drum is indicated by lighting the OPC drum replacement lamp. The copy count of the OPC drum can be checked with SIM 22-12.
5 – 12
2. Optical unit correction (Dirt correction)
Diagram of correction system in the optical section
Referance refrection plate
Table glass
AE sensor
(Next to the lens)
Copy lamp
Referance refrection plate
Mirror AE SENSOR
AMP
MAIN CONTROL PWB
CPU
Timer
A/D converter
Arithmetic unit
EE-PROM
Copy lamp referance control level
AC power supply unit
(Copy lamp control circuit)
The purpose of this correction is to maintain the copy density even though the optical unit is contaminated and to reduce troublesome cleaning of the optical unit.
When the lamp, the mirror, and the reflector are dirtied with dusts and toner, the light quantity radiated to the photoconductor drum is reduced, increasing the copy density and producing unnecessary background copy.
The above trouble is removed by changing the copy lamp voltage to adjust the copy density. It, however, requires serviceman’s operation.
In this model, the AE sensor senses dirt on the copy lamp, the mirror, and the reflector, and the copy lamp light quantity is changed according to the dirt level to reduce the change in the copy density due to the optical unit dirt.
When the optical parts are dirtied, the reflection rate is reduced to reduce the quantity of light which is passed to the optical dirt sensor.
In this manner the dirt level is sensed.
[Initial setting]
After making a copy by Simulation 46, the scanner unit stops at the position of the standard reflection plate on the back of the document stopper to light the copy lamp at a certain level, and the AE sensor output level at that time is recorded as the reference value. (The reference value can be checked with Simulation 44-2.)
[Correction timing]
The correction is performed after the copy cycle after turning on the power, or after the specified time of rotation of the photoconductor drum.
[Correction operation]
The same operation as the initializing is performed to change the copy lamp voltage until the AE sensor output level reaches the same level as the reference value, performing the correction.
The copy lamp voltage is revised to a new value at every correction, and the new value will be used in the next correction.
(The correction voltage value can be checked with Simulation 44-3.)
[Correction timing]
• When the power is turned on.
• Once for every 155 min. of drum rotation.
Driver
Copy lamp control clock generator
START
The scanner starts initializing.
The scanner unit stops at the standard reflection plate position.
Copy lamp voltage
0.3V (0.6V) up
Copy lamp ON
Correction mode ?
NO
YES
Copy lamp ON
(67.7V/135V)
Optical dirt sensor reference level
(DSENS) memory
Copy lamp ON
(67.7V/135V)
Sensor output =
Reference level
(DSENS) ?
YES
NO
NO
YES
Sensor output
< Reference level
(DSENS) ?
Sensor output =
Reference level
(DSENS) ?
YES
Copy lamp voltage
0.3V (0.6V) down
No correction is made.
Copy lamp ON
Copy lamp voltage correction
Copy lamp correction voltage calculation
NO
Sensor output =
Reference level
(DSENS) ?
YES
END
5 – 13
7. SPF section (SF-2514 only)
1. Outline
The SPF (Single pass feeder) is a standard provision of the SF-2514, and allows automatic copying of max. 20-sheet documents (of the same size and max. thickness of 3 mm). (Only one set of copies per run)
9
14
13
10
12
7 6 5 4 2 1 15
11
8 3 16
Original transport path and the basic composition
17
1 Original takeup roller
4 Original paper feed roller
7 SPF PS roller, upper
F SPF transport roller
I SPF document exit sensor
L SPF motor
(Operational descriptions)
Original setting
Select SPF with the tray select key.
(Copier side)
PSW ON
MM rotation Main motor rotation
CPFC ON Paper feed
Paper transport TRC ON
PPD ON
TRC OFF
RRC ON
[Transfer]
POD ON
[Fusing]
[Paper exit]
Synchronization
2 SPFD
5 Document feed reverse roller
8 SPF PS roller, lower
G CL pulley
J Original exit roller
M SPF cooling fan motor
3
6
9
H
K
SPF PS gate
SPPD actuator
SPPD
SPF cover open/close sensor
SPF paper exit tray
Magnification changes in the paper feed direction is performed by changing the original transport speed.
(SPF side)
(Timing chart)
PSW
MM
CPFC1
TRC
RRC
PPD
POD
SM rotation
SPFS ON
SPPD ON
SRRC ON
[Exposure]
SPOD ON
[Original exit]
SM
SPFS
SRRC
SPPD
SPOD
The image lead position is adjusted with Sim-50.
5 – 14
[6] DISASSEMBLY AND ASSEMBLY
The descriptions of this chapter are divided into the following sections:
1. Paper feed section, paper transport section, power section
2. Manual paper feed section
3. Fuser section
4. Optical system
5. SPF section
6. Drum section
7. Developer section
8. Operation panel/medium cabinet
9. Major parts in the frame side
1. Paper feed section, paper transport section, power section
1-1. Paper feed unit
1 Open the front cover and open the body. Release the right and the left lock levers and pull out the manual paper feed unit.
2 Disconnect the CN-B connector of the lower PWB, remove the paper feed unit fixing screws (4 pcs.), and lift the paper feed unit to remove.
1-2. Paper feed roller ass’y removal
1 Disconnect the connector of the magnetic clutch in the rear frame side.
2 Remove the hook section of the paper feed roller bearing in the front frame side by using a screwdriver.
3 Remove the roller release arm spring from the paper feed frame.
2 3
4
1
6 – 1
4 Remove the bearing in the rear frame and remove the paper feed roller ass’y.
Note for assembly (1): Hang the roller release arm spring on the spring hook of the roller release arm. Attach the paper feed roller ass’y to the paper feed unit, and hang the spring on the paper feed frame.
A
1-3. Separation roller
1 Remove the paper feed unit and remove the separation roller.
A
Note for assembly (2): Attach the paper feed roller ass’y so that the paper feed roller clutch faces the lower frame.
When attaching the paper feed unit, insert it in the base unit hole of the copier.
1-4. Takeup roller, paper feed roller
1 Remove the paper feed roller ass’y, and remove the takeup roller.
2 Remove the roller holder, the stop ring, and the bearing, then remove the paper feed roller.
6 – 2
Note for assembly (1): Attach the paper feed roller so that the one-way clutch in the rear frame side. (Be careful to the installing direction.)
Attach the roller holder as shown below:
3 Remove the clutch, and the gear as shown below:
One-way clutch side
1-5. Resist roller
1 Insert a screwdriver into the front frame hole to release the lock pawl, and remove the TC case.
Note for assembly (1): When assembling, attach the positioning pin of the resist roller clutch in the direction of paper exit.
2 Disengage the hook section of the bearing in the front frame side, lift it upward and remove towards the upper frame side. Remove the spring in the rear frame side. Disconnect the CN-E connector in the lower frame PWB unit. Slide the resist roller ass’y to the rear frame side and remove it upwards.
Note for assembly (2): When assembling the resist roller ass’y to the copier, attach it over the PS roller lower mylar and rotate the mylar and return the mylar to the original position.
(To prevent deformation of the mylar)
1 2
6 – 3
1-6. Transport belt
1 Remove the fuser unit.
2 Remove the TC case.
3 Remove the transport belt drive shaft in the TC case from the holder, and remove the drive shaft in the paper exit side, and remove the belt.
1-8. Lower unit PWB
1 Open the body up, and remove the rear lower cabinet.
2 Remove the connector, the PWB fixing screw (1 pc.), and the
CN-F fixing screws (2 pcs.). Slide the lower unit PWB to the front frame side and remove it upwards.
1-7. Socket holder unit
1 Remove the CN-C connector of the lower unit PWB, the grounding wire, and the red high voltage lead wire (for separation electrode) which in the socket holder.
2 Remove the two fixing screws in the paper feed side, remove the pawl from the positioning hole in the paper exit side, and slide it in the direction of paper feed to remove.
1-9. Cassette paper empty detector (CPED1)
1 Remove the rear lower cabinet.
2 Remove the fixing screw and the CN-D connector, and remove
CPED1.
1-10. Power unit
1 Remove the upper and the lower cabinets in the rear side.
2 Remove 12 connectors, two fixing screws, and the grounding wire. Lift the power unit to remove it upwards.
6 – 4
Note for assembly (1): When attaching the harness, be careful to the connector color and the lead wire color. (Carefully refer to the indication on the PWB for connection of the harness.)
Example: YE (WH)
→
Yellow connector and white lead wire
YE = Yellow, WH = White, BK = Black,
GR = Green, BL = Blue
2. Manual paper feed section
2-1. Manual paper feed roller, manual takeup roller
1 Remove the manual paper feed unit from the copier.
2 Remove the roller auxiliary spring, the manual solenoid connector, the E-rings in the front and the rear frames, and the bearing.
Remove the manual roller ass’y together with the solenoid holder.
4 Remove the manual arm and the E-ring, and remove the manual paper feed roller.
Note: Gear 20T has a positioning pin. When removing the manual arm, be careful not to miss the positioning pin.
Gear 20T (Positioning pin included)
Arrow mark
3 Remove the manual feed takeup roller from the manual arm.
Note for assembly (1): The manual paper feed roller is provided with the one-way clutch. When attaching it, attach so that the arrow mark on the roller is in the E-ring side. (Be careful to the installing direction.)
2-2. Reverse rotation roller ass’y
1 Remove the manual feed roller ass’y.
2 Remove the reverse roller ass’y from the roller holder.
6 – 5
3. Fuser section
3-1. Fuser unit removal
1 Open the front panel
2 Remove the table glass.
3 Turn the open/close lever to the right and open the upper unit slowly.
4 Remove the connectors (2 pin
×
2), slightly lift the right side of the unit and pull it out.
8 Remove an E-ring and two connectors.
5 Move the copy lamp unit to the left of the body (the paper exit side).
6 Disconnect the connector (2-pin) of the dehumidifier heater which extends from the dark box cover. Insert a long screwdriver (+) into that port and remove the screw which is fixing the fuser cover.
7 Remove the fuser cover in the direction of arrow A .
3-2. Heater lamp replacement
1 Remove the fuser cover fixing screw (1 pc.), and slide it to the front side, and remove it.
2 While pushing the projection of the Faston terminal connected to the thermostat, remove the lead wire from the connected section.
3 Remove the lamp holder fixing screw on the top of the rear frame, and remove the holder.
4 Pull out the heater lamp from the front frame.
For assembly, reverse the disassembly procedures.
A
6 – 6
3-3. Upper heat roller ass’y removal
1 Remove the bearing fixing screws (2 pcs.) in the front and the rear frames.
2 Put the paper guide to the paper exit side and separate the separation pawl from the roller and fix it.
3 Rotate the fixing screw section of the bearing about 45 degrees below and pull it upwards.
For assembly, reverse the disassembly procedures.
3-5. Lower cleaning roller and lower heat roller replacement
1 Remove the fuser unit.
2 Remove the CL roller springs (2 pcs.) which is fixing the lower cleaning roller from the hook section.
3 Remove the lower cleaning roller.
4 Lift the paper exit guide, and remove the lower heat roller without making contact between the roller and the scraper.
For assembly. reverse the disassembly procedures.
3-4. Upper separation pawl replacement
1 Remove the fuser unit and remove the cover.
2 Place the fuser unit so that the paper guide is in the lower side.
(The separation pawl is in the upper side.)
3 Remove the tension spring, hold the tip of the separation pawl and remove it from the supporting section, and tilt it to remove.
For assembly, reverse the disassembly procedures.
6 – 7
3-6. Scraper replacement
1 Remove the upper fuser unit.
2 Remove the paper exit paper guide fixing screw (step screw) in the front frame side, and remove the paper exit paper guide.
3-7. Thermistor/thermostat removal
Press this projection to desassemble
Paper exit paper guide
3 Remove the scraper hook section from the paper exit paper guide, and remove the scraper.
* Note for assembly
• Be sure to bring the thermistor center into contact with the heat roller.
• Clean and remove foreign materials from the thermistor surface with alcohol.
Scraper
Note: When attaching the scraper, be careful not to deform it. Also be careful to check that the scraper hook section is completely inserted into the paper exit paper guide.
6 – 8
4. Optical system
4-1. Copy lamp replacement
1 Open the body up. Release the lock lever of the manual paper feed unit and remove the manual paper feed unit.
2 Remove the fixing screws (2 pcs.) in the right upper cabinet, and remove the right upper cabinet.
3 Remove the fixing screws (4 pcs.) of the glass holder, and remove the glass holder.
4 Remove the table glass.
4-2. Copy lamp unit replacement
1 Remove the manual paper feed unit, the right upper cabinet, the glass holder, the table glass, and the operation panel.
2 Move the copy lamp unit to the frame notch (refer to the figure).
3 Remove the terminal section of the copy lamp lead wire. (One screw and insertion terminal)
4 Loosen the fixing screw of the front and the rear frame wire, fixing plate and remove the wire from the copy lamp unit.
5 Slide the whole unit forward, and remove the rear frame side upwards.
For assembly, reverse the disassembly procedures.
Wire fixing screw
5 While pushing the copy lamp electrode in the rear frame, remove the copy lamp.
For assembly, reverse the disassembly procedure.
Note: Be careful to the direction of the copy lamp installation.
Wire fixing screw
Note: When the copy lamp unit is removed, the position adjustment must be required when attaching again. Refer to the adjustment item for the work.
4-3. Mirror base drive wire replacement
<Removal>
1 Remove the manual paper feed unit, the right upper cabinet, the glass holder, the table glass and the operation panel.
2 Remove the fixing screws (2 pcs.) of the left upper cabinet, and slide to the rear frame side to remove the cabinet.
3 Loosen the fixing screw of the copy lamp unit wire fixing plate, and remove the wire from the unit.
4 Remove the tension spring ( 7 in the figure) of the mirror base drive wire in the paper exit side from the hook section.
5 Slightly shift the mirror base to the paper feed side, and remove the terminal 1 of the mirror base drive wire.
6 Remove the wire fixing screw of the drive pulley.
<Installation>
1 Set the mirror base to the positioning plate position.
2 Set the terminal side of the mirror base drive wire on the hook section 1 , turn the mirror base pulley 2 outside to wind the wire around the drive pulley from the above.
3 Wind the wire 8 turns from the outside to the inside of the drive pulley, and put the 7th turn into the groove, and fix it with a screw temporarily.
4 Pass the wire under the mirror base and wind around the paper exit pulley (the larger one).
5 Pass the wire to the inside of the mirror base pulley, and pass through the paper exit pulley (the smaller one), then fix the tension spring to the hook section 7 .
6 Check that the mirror base is in contact with the positioning plate, and tighten the wire fixing screw of the drive pulley.
6 – 9
2
5
7
4
2
7
4
2
5
6
5
6
5
1
3
1
2
Note: After replacement of the mirror base drive wire, perform the vertical skew copy adjustment, the focus adjustment, and the horizontal skew copy adjustment.
4-4. Lens and lens drive wire replacement (Only the zoom function model)
<Removal>
1 Remove the manual paper feed unit, the right upper cabinet, and the table glass.
2 Remove the dark box cover fixing screw (1 pc.) and the cover.
3
<Installation>
1 Pass the lens drive shaft through the carriage unit, and set the shaft to the shaft support section of the base plate.
3 Shift the lens carriage unit to the paper feed side.
4 Remove the tension spring of the lens drive wire from the hook section, and remove the wire.
2 Fix the shaft mounting plate in the paper feed side.
3 Store the lens unit projection in the lens guide rail.
4 Set the lens drive wire on the carriage unit.
5 Align the No.4/5 mirror zoom cam and the carriage unit to the normal copy position
6 Manually hold and fix the carriage unit, and wind the wire around the drive gear.
7 Wind the wire around the pulley, pull it slightly and attach the spring to it, and set the spring on the hook section.
5 Remove the shaft mounting plate in the paper feed side, and remove the shaft and the carriage unit.
6 – 10
Note: When the lens unit is removed, the right angle adjustment, the magnification ratio adjustment, and the focus adjustment are required.
Note: When the lens drive wire is removed, the magnification adjustment and the focus adjustment are required.
4-5. No. 4/5 mirror unit and peripheral parts replacement
1 Remove the manual paper fed unit, the right upper cabinet, and the table glass.
2 Remove the dark box cover fixing screw (1 pc.) and remove the cover.
3 Remove the mirror holder spring.
4 Remove the shaft mounting plate, pull out the shaft towards the paper feed side, and remove No. 4/5 mirror unit.
4-6. Optical unit removal
1 Remove the drum unit and the developer unit.
2 Remove the right cabinet, the left cabinet, the operation panel, the medium cabinet, and the rear cabinet.
3 Remove three connectors A from the sensors in the rear as shown in the figure.
4 Remove connector B between the mirror motor and the main
PWB (CN-C).
5 Remove two snap bands C which are binding cables of the operation panel.
6 Remove the optical unit .
C
A
A
B
5 Remove the fixing screw of the center section of the drive pulley, and remove the pulley.
6 Remove the CN-E connector of the main PWB, remove the drive motor fixing screws (2 pcs.), and remove the No.4/5 mirror unit from the mounting section (square hole in the base plate).
For assembly, reverse the disassembly procedures.
4-7. Other parts in the optical system
1 Remove the rear upper cabinet.
2 Remove the CN-C connector of the main PWB and the fixing screws (2 pcs.), and pull out the mirror motor towards the rear frame.
6 – 11
3 Remove the connector and the fixing screw (1 pc.), and remove the mirror home position sensor (MHPS) towards the rear frame.
4 Remove the connector and the fixing screw and pull out the lens home position sensor (LHPS) towards the rear frame.
4-8. Light adjustment plate/temperature fuse removal
1 Remove the document glass.
2 Remove the parts as shown in the figure.
5 Remove the fixing screw (1 pc.) of the upper frame and the screw and the connector in the rear frame, then remove the main PWB.
6 Remove the connector, the manual paper feed unit, the right upper cabinet, the table glass, and the dark box cover. Remove the fixing screw from the above and remove the AE sensor towards the front frame side.
For assembly, reverse the disassembly procedures.
6 – 12
5. SPF section
5-1. SPF mechanism removal
1 Open the OC cover, and remove the SPF cover fixing screws (5 pcs.).
2 Remove the SPF upper cover.
4 Remove the SPF motor ass’y fixing screws (4 pcs.) and the CN-C connector (4 pin) of the SPF control PWB. Then remove the SPF motor ass’y.
3 Remove two fixing screws of paper exit reverse paper guide.
(Reference)
The SPF motor can be removed by removing two screws from the
SPF motor ass’y.
A
6 – 13
5 Remove four screws from the SPF mechanism, the 2-pin connector from the clutch, the 2-pin connector from the SPF cover open/close sensor, the CN-C (16-pin) connector from the SPF control PWB, then remove the SPF mechanism.
3 Remove the E-rings (3 pcs.), slide the gear to the clutch once, and pull out the pin inside the gear. Then the gear and the paper feed roller can be removed.
4 Since the takeup roller is of the insertion type, remove it from the grip side.
5-2. Paper feed roller/takeup roller replacement
1 Remove the SPF upper cover as shown in "5-11 , 2 ."
2 Remove the E-rings (3 positions) which are fixing the paper feed roller ass’y, slide the bearing, and remove the paper feed roller ass’y.
For assembly, reverse the disassembly procedure.
Note: The paper feed roller is provided with the one-way clutch. Be sure to attach so that the one-way clutch is in the front frame side.
5-3. Reverse roller (ass’y) replacement
1 For replacement of the reverse roller, the SPF unit must be removed. For that purpose, remove the front frame side fixing screws (2 pcs.) and the connector (one position).
2 Remove the rear frame side fixing screws (2 pcs.), and disconnect the CN-B connector of the SPF control PWB. Then put the SPF unit upside down.
3 Open he roller holder and replace the roller.
6 – 14
For assembly, reverse the disassembly procedures.
5-4. SPF control PWB replacement
1 Remove the SPF upper cover as shown in "5-11 , 2 ."
2 Remove three connectors and two screws from the SPF control
PWB and remove the PWB.
5-6. Sensor removal
5-5. Clutch/solenoid removal
6 – 15
7. Developer section
7-1. Developer unit removal
1 Open the front cover.
2 While pressing down the release lever, open the toner cartridge slowly and remove it.
3 Loosen the step screw A .
4 Pull out the developer unit.
6. Drum section
6-1. Drum unit removal
1 Open the front cover.
2 While pressing down the release lever A , open the toner cartridge slowly. (Arrow B )
3 Remove the screw and remove the drum unit.
A
A
7-2. Developer cartridge removal
1 Place the magnet roller of the developer unit on the box to protect it.
B
6 – 16
2 As shown in the figure below, open the section which is pressing the cartridge pawl with a screwdriver, and pull out the developer cartridge.
7-4. Toner density sensor
7-3. Toner motor removal
1 Remove four short screws A and one long screw B , and the connector, and separate the toner cartridge section.
8. Operation panel section/medium cabinet
1 Open the front cabinet.
2 Remove three screws A and two harnesses from the operation panel.
3 Remove the operation panel unit.
A
2 Remove two screws C and remove the motor.
A
B
A
B
4 When removing the medium cabinet, first remove the process unit and the developer unit then remove four screws B and remove the medium cabinet.
6 – 17
9. Major parts in the frame side
9-1. Ozone filter
1 Remove the document glass.
2 Remove the black sheet and remove the ozone filter.
9-2. Optical unit/SPF unit cooling fan removal
1 Remove the rear cabinet.
2 Remove as shown below.
9-3. Ventilation fan motor
1 Remove the optical unit. (For details, refer to "4. Optical unit removal.")
2 As shown in the figure below, remove the ventilation fan motor.
6 – 18
9-4. Transport roller clutch
1 Remove the rear cabinet.
2 Remove the transport clutch as shown in the figure below.
9-5. Paper exit sensor
1 Open the front panel.
2 Move the open/close lever to the right and open the upper unit slowly.
3 Remove the sensor as shown in the figure below.
6 – 19
[7] ADJUSTMENTS
The descriptions of this chapter are divided into the following sections:
1. Developer section
(1) MG roller main pole position adjustment
(2) Adjustment of clearance between DV doctor and MG roller
2. Optical section
(1) Lens unit angle adjustment
(2) Mirror unit angle/position adjustment
(3) Image distortion adjustment
(4) Copy image center position adjustment
(5) Focus adjustment
(6) Copy magnification ratio adjustment
(7) Uniformity adjustment
(8) Image loss/void area adjustment
3. Copy density adjustment
(1) Copy Density adjustment timing
(2) Note for copy density adjustment
(3) Necessary thing for copy density adjustment
(4) Copy density adjustment mode
(5) Copy density adjustment procedure
(6) Copy density adjustment table
4. Others
(1) Transfer charger wire installation
(2) DV bias adjustment
(3) Separation charger output adjustment
1. Developer section
(1) MG roller main pole position adjustment
If the MG roller main pole position is improper, the following troubles may occur:
•
Insufficient copy density
• Toner splash
1 Remove the DV unit from the body and remove the DV cover.
2 Tie a string to a needle as shown in the figure below.
3 Hold the string and move the needle to the MG roller.
4 Mark the point where the needle makes contact with the MG roller.
15.1mm
A
Marking
5 Measure the distance between the marking and the developer unit bottom A and check that the distance is within 15.1mm. If the measured distance is outside the range, loosen the MG adjustment plate fixing screw, and move the adjustment plate in the arrow direction to perform procedures 3 to 5 again.
DV cover
7 – 1
6 Tighten the MG adjustment plate fixing screw.
(2) Adjustment of clearance between DV doctor and MG roller
If the clearance between the DV doctor and the MG roller is improper, the following troubles may occur:
• Insufficient copy density
• Copy dirt
• Toner splash
1 Remove the DV cover.
2 Loosen the DV doctor fixing screw.
3 Insert a 0.625mm thickness gauge into the clearance between the
MG roller and the DV doctor in the range of 30mm width under the
DV doctor fixing screw.
A
4 Press the DV doctor in the arrow direction and tighten the DV doctor fixing screw.
5 Check that the clearance of the DV doctor is 0.625
±
0.03mm in the range of 30mm width under the DV doctor fixing screw.
0.625±0.03mm
MG
Note: When adjusting, be careful not to scratch the DV doctor.
A
30mm
30mm
7 – 2
2. Optical section
A. Adjustments list
Classification
Parts installation position
No.
(1)
(2)
Lens
Mirror
Adjustment content
Copy picture quality (3) Image distortion adjustment
(4)
(5)
(6)
Copy image center position adjustment
Focus adjustment (Resolution adjustment)
Copy magnification ratio adjustment
(7)
(8)
Uniformity adjustment
Image loss, void area adjustment
* For details, refer to the Ref. page.
B. Notes
When performing the adjustment, observe the following notes:
1) Observe the sequence of procedures shown in the flowchart below.
2) Adjustment can be started midway in the flowchart only if all the previous items have been properly adjusted.
3) If the content of an adjustment item in the flowchart is changed, all the following items must be adjusted accordingly.
Any adjustment item is based on the previous adjustment items and relates to the following adjustment items.
4) "Sim" in the flowchart stands for "Simulation." a b a a b a b c a b
Lens unit right angle adjustment
No.4/5 mirror unit right angle adjustment
No. 4/5 mirror unit drive cam position adjustment
Horizontal image distortion adjustment
Vertical image distortion adjustment
Adjustment value/Standard value
—
—
—
—
—
0
±
1.5 mm
*
100 ± 0.8%
Vertical copy magnification ratio adjustment (normal copy)
Vertical copy magnification ratio adjustment (zoom copy)
Horizontal copy magnification ratio adjustment (zoom copy)
100
±
0.9%
100
±
0.8%
—
* Copy image position adjustment
Void area adjustment
Lead edge
Lead edge void area adjustment (SPF mode)
End edge void area adjustment
*
START
(1)-a
Adjust the lens unit inclination to zero.
(2)-a
Adjust No.4/5 mirror unit inclination to zero.
Check the lens No. (OL No.)
Necessary special tool
—
—
—
—
—
—
—
—
—
—
—
—
—
7-16
7-16
7-18
7-19
7-23
Execute Sim26-08 to set the lens reference position set value in the zoom copy mode.
(SF-2414/2514 only)
(2)-b
Set to the normal copy state in the normal copy mode and set the lens unit to the normal position. Then fix the
No.4/5 mirror drive cam position to the specified position.
7-8
7-8
7-11
7-12
7-14
Ref.
page
7-6
7-7
7-15
Obtain the lens reference position set value from the lens No. table.
Fix the blank lamp to the center.
Execute Sim48-1 to set the lens reference position set value.
Obtain the lens reference position set value in the zoom copy mode from the lens No. table.
(SF-2414/2514 only)
(4)
Fix the lens center position adjustment rail at the center temporarily.
(5)
Fix No.4/5 mirror position to the center.
1
Standard setting value in the sim48-1 and 26-8 (Reference)
Lens No.
sim48 sim26-8
Lens No.
sim48 sim26-8
–1
77
0
13
53
14
0
75
1
14
51
15
1
73
2
15
49
16
2
72
3
16
48
17
3
70
4
17
46
18
4
68
5
18
44
19
5
67
6
6
65
7
7
63
8
8
61
9
9
60
10
10
58
11
11
56
12
12
55
13
7 – 3
1' 2'
(3)-a
Make a test chart. (Draw a rectangle
NO on B4 or 8 1/2" x 14" paper.)
(5)
Use the test chart (UKOG-0089CSZZ) copy on B4 or 8 1/2" x 14" paper so that the resolution patterns are copied at the center and the four corners.
With the document cover open, make a 90% copy on B4 or
8 1/2" x 14"paper.
Check the resolution at the center and the four corners.
Check horizontal image distortion.
The distances at the right and the left of the horizontal copy image line and the black background made by the blank lamp are equal
to each other.
(3)-b YES
With the document cover closed, make a 10% copy on B4 or
8 1/2" x 14" paper.
NO
Is the center resolution more than
5.0 lines/mm and are the corner resolutions more than
4.5 lines/mm ?
Change the relative positions of the rear or the front frame side scanner drive pulley and the shaft, and adjust horizontal image distortion.
(6)-a YES
Set the scale along the document reference plate (vertical to the paper transport direction) and make a 100% copy on B4 or 8 1/2" x 14" paper.
NO Change No.4/5 mirror positions to adjust focus.
Compare the scale and its copy image size.
Check that the right corner and the left corner angles of the copy image are right angles.
Set the Sim48-1 set value smaller.
YES
Is the copy image greater than the actual scale ?
Is the right corner angle of the copy image equal to the left corner angle ?
YES
With the document cover closed, make a 100% copy on B4 or
8 1/2" x 14" paper.
NO
Change the height balance of right and left scanner slide rails, and adjust so that the corner angles of the copy image rectangle are equal to each other.
Are they the same size ?
(6)-b
YES
Make a copy on B4 or 8 1/2" x 14" paper at the max. enlargement ratio.
(Zoom model only)
NO
Check that the max. enlargement ratio matches with the copy image size.
Check the copy image vertical distortion.
//9/
Are the four angles of the copy image rectangle right angles ?
YES
(4)
Make a test chart. (Draw a rectangle at the center of B4 or 8 1/2" x 14" paper in the longitudinal direction.)
NO
Change No. 4/5 mirror height balance and adjust vertical image distortion.
Are the enlargement ratio and the copy image size matched ?
NO
(6)-c
YES
Set the scale in the paper transport direction, and make a copy on B4 or
8 1/2" x 14" paper at 100%.
Set the Sim26-8 set value smaller.
YES
Is the copy image greater for the enlargement ratio ?
NO
NO
Set the Sim48-1 set value greater.
Set the Sim26-8 set value greater.
Set the test chart to the document positioning reference plate, and make a 100% copy on B4 or 8 1/2" x 14" paper by cassette paper feed.
Check that the copy image is at the center of the copy paper.
Compare the scale and its copy image size.
Are they the same size ?
NO
Set Sim48-2 set value smaller.
YES
Is the copy
image greater than the actual scale ?
NO
Set the Sim48-2 set value greater.
YES
Is the copy image at the center of the copy paper ?
YES
NO
Change the lens rail position so that the copy image comes at the center of the copy paper.
Is the SPF installed ?
YES
Set a document with the fixed size images in the SPF mode and make a copy on B4 or 8 1/2" x 14" paper at 100%.
NO
2
YES
Compare the scale and the copy image in the paper transport direction.
Are they the same size ?
NO
Set the Sim48-3 set value smaller.
Set the Sim48-3 set value greater.
YES
Is the copy image greater than the actual scale ?
NO
3
7 – 4
(7)
3'
Use a half-tone document and make a
100% copy on B4 or 8 1/2" x 14" paper in the half tone mode.
Check the uniformity.
4'
Make copies at the max. enlargement ratio and the min. enlargement ratio.
Measure the distances between the copy image lead edge and the copy paper lead edge of the max. enlargement copy and the min. enlargement copy, and compare the two.
Is the uniformity OK ?
NO
Change the installing position of the exposure adjustment plate to adjust the uniformity.
0 ± 1.0 mm ?
NO
Change the Sim50-1 set value A so that the difference is within the specified range.
YES
Put the scale to the document reference plate and set in the paper transport direction.
YES
5'
Make a 100% copy with Sim50-1.
Set the Sim45 set value to "0."
Is the SPF installed ?
YES
NO
Measure the distance between the copy image lead edge and the copy paper lead edge.
0 ± 1.0 mm ?
NO
Change the Sim50-1 set value
B so that the difference is within the specified range.
(SF-2414/2514)
Change the Sim50-1 set value
A so that the difference is within the specified range.
(SF-2314)
Is it the zoom machine ?
5
YES
(8)-a YES
Set the Sim50-1 set values A and B to "0."
Make a copy on B4 or 8 1/2" x 14" paper at the max. enlargement ratio and the min. reduction ratio in the document table mode.
YES
Measure the distance between the copy image lead edge and the paper lead edge of each copy.
L1 = Distance in the max. enlargem ent ratio
L2 = Distance in the min. reduction ratio
NO
(8)-a
Set the Sim50-1 set values A, B, and C to "0."
Calculate the Sim50-1 set value from the following formula.
A = 8.243 x (L1 - L2)
B = 16.0668 x L2 -7.9661 x L1
Is the SPF installed ?
YES
Use the SPF to make a 100% copy.
Measure the distance (L3) between the copy image lead edge and the copy paper lead edge.
Calculate the Sim50-1 set value from the following formula.
C8 = 8.0906 x L3
Set the Sim50-1 set value.
NO
Set the Sim50-1 set values A and B.
4
YES
6
Make copies at the max. enlargement ratio and the min. enlargement ratio.
Measure the distances between the copy image lead edge and the copy paper lead edge of the max. enlargement copy and the min. enlargement copy, and compare the two.
0 ± 1.0 mm ?
(8)-b
Make a 100% copy in the document table mode and check the lead edge void area. (Document table mode)
NO
Change the Sim50-1 set value
C so that the difference is within the specified range.
6
Change the Sim45-1 set value to adjust the end edge void area.
NO Change the Sim45-1 set value to adjust the void area.
YES
NO
Is the SPF installed ?
YES
Use the SPF to make a 100% copy and check the lead edge void area. (SPF mode)
NO
Use a black color document and make a 100% copy on the A4 or
8 1/2" x 14" paper
YES
1 ~ 3mm ?
NO
Change the Sim45-1 set value to adjust the lead edge void area.
End
YES
7 – 5
C. Adjustment contents
(1) Lens a. Lens unit right angle adjustment
I.
Summary
By setting the optical axis of the copier body and that of the lens in parallel with each other, copy image distortion due to the lens can be reduced.
The horizontal angle of the lens unit slide shaft is changed by changing the position of the lens unit slide shaft fixing plate.
This adjustment is performed not by checking a copy image, but by visual measurement with the mark on the optical unit base as the reference.
The copy image distortion must be adjusted not only in this adjustment but also in the mirror parallelism adjustment.
II.
Purpose
The purpose of this adjustment is to reduce copy image distortion due to the lens by setting the optical axis of the copier body and the optical axis of the lens in parallel with each other.
III.
Note
The copy image distortion adjustment is completed by making a copy and adjusting parallelism of the mirror.
For that purpose, this adjustment must have been properly performed.
IV.
Cases when the adjustment is required
1) When the lens or the lens unit is disassembled or its part is replaced.
2) When the copy image is distorted as follows (because of different copy magnification ratios in different sections):
Large copy magnification ratio
Normal copy magnification ratio
Small copy magnification ratio
Document Copy
V.
Necessary tool
* Screwdriver (+)
VI.
Adjustment procedure
1) Remove the right upper side cabinet and the document reference plate.
Document reference plate
Document table glass
4) Hold section A of the lens unit slide, and move the lens unit side section to the mark on the optical unit base.
Section A
Optical unit base
Optical unit cover
Mark
5) Loosen the lens unit slide shaft fixing screw.
2) Remove the document glass.
3) Remove the optical unit cover.
Right upper side cabinet
7 – 6
A
Center mark
B
Lens unit slide shaft fixing plate
A B
6) Fix the lens unit slide shaft fixing plate in the center mark position.
VII.
Troubles caused by improper adjustment
(2) Mirror
There are following adjustments of parts installation positions related to the mirror.
* No. 4/5 mirror unit right angle adjustment
* No. 4/5 mirror unit drive cam position adjustment
a. No. 4/5 mirror unit right angle adjustment
I.
Summary
Copy image distortion caused by No. 4/5 mirror unit van be reduced by setting the optical axis of the copier and No. 4/5 mirror unit.
The horizontal angle of the lens unit slide shaft is adjusted by changing the position of No. 4/5 mirror nit slide shaft fixing plate.
This adjustment is performed not by checking a copy image but by visual measurement with the optical unit base plate as the reference.
Copy image distortion must be adjusted ont only in this adjustment but also in the No. 1/2 scanner unit parallelism adjustment.
II.
Purpose
The purpose of this adjustment is to eliminate copy image distortion by setting the optical axis of the copier and that of the No.
4/5 mirror unit in parallel with each other.
III.
Note
The copy image distortion adjustment is completed by making a copy and adjusting the parallelism of No. 1 and No. 2 scanner units.
For that purpose, this adjustment must have been properly performed.
IV.
Cases when the adjustment is required
1) When No. 4/5 mirror unit is disassembled or its part is replaced.
2) When the copy image is distorted as follows:
Document Copy A Copy B
V.
Necessary tools:
* Screwdriver (+)
* Scale
VI.
Adjustment procedure
1) Remove the right upper side cabinet and the document reference plate.
Document reference plate
Document table glass
2) Remove the document glass.
Optical unit cover
3) Loosen the fixing screw of the No. 4/5 mirror unit slide shaft fixing plate.
B
A
No. 4/5 mirror unit slide shaft fixing screw
A
B
4) Move the No. 4/5 mirror unit slide shaft fixing plate in directions A and B so that the No. 4/5 mirror unit side is in parallel with the optical unit frame side plate, and fix it.
Use a scale to check the parallelism.
Right upper side cabinet
7 – 7
VII.
Trouble caused by improper adjustment
b. No. 4/5 mirror unit drive cam position adjustment
(SF-2414/2514 only)
I.
Summary
The copy magnification ratio and focus are properly adjusted by matching the lens unit movement and the No. 4/5 mirror movement.
This adjustment is performed by changing the relative positions of the lens unit drive gear and the No. 4/5 mirror unit drive cam.
II.
Purpose
The purpose of this adjustment is to adjust the relative positions of the lens unit drive gear and the No. 4/5 mirror unit drive cam and to adjust the copy magnification ratio and the focus.
III.
Note
IV.
Cases when the adjustment is required
1) When the lens and the No. 4/5 mirror drive section are disassembled or its part is replaced.
2) When the focus is improper though the copy magnification ratio is proper, or vice versa.
V.
Necessary tools
* Screwdriver (+)
* M4 x 20 screw
VI.
Adjustment procedure
1) Set the copy magnification ratio to 100%, and set the lens unit to the position for 100% copy magnification ratio.
2) Remove the right side cabinet and the document reference plate.
Document reference plate
Document table glass
5) Loosen the No. 4/5 mirror unit drive cam fixing screw without moving the lens unit drive gear.
Cam
Do not move
Cam fixing screw
6) Turn the No. 4/5 mirror unit drive cam without moving the lens unit drive gear so that the cam positioning hole is fit with the reference hole in the optical unit frame.
Requires changing relative position of cam and gear when having an out of focus copy in the enlargement reduction copy mode
Standard fixing position
Frame
Right upper side cabinet
3) Remove the document glass.
4) Remove the optical unit cover.
Optical unit cover
Reference hole
Cam fixing screw
Do not move.
7) Pass the M4 x 20 screw through the No. 4/5 mirror unit drive cam positioning hole and fix the screw to the frame without turning the cam.
8) Tighten the cam fixing screw to fix the No. 4/5 mirror unit drive cam to the lens unit drive gear without moving the lens unit drive gear.
9) Remove the screw which was fixed to the frame in procedure
7).
VII.
Troubles caused by improper adjustment
(3) Image distortion adjustment
7 – 8
There are following two types of image distortion.
* Horizontal image distortion
* Vertical image distortion
Image distortion is generated mainly by insufficient parallelism of the mirror and misalignment of the lens optical axis.
In this model, image distortion is adjusted by adjusting parallelism of each mirror.
a. Horizontal image distortion adjustment
I.
Summary
This adjustment is to adjust horizontal image distortion by setting the horizontal optical axis of the copier and the horizontal optical axis of each mirror in parallel with each other. The relative positions of the front frame and the scanner unit drive pulley of the frame are changed to perform the above adjustment.
Install the No. 1 and No. 2 scanner units to the specified positions, adjust the mechanical horizontal parallelism, and perform the final adjustment while making copies.
II.
Purpose
The purpose of this adjustment is to reduce horizontal image distortion by setting the horizontal optical axis of the copier and the No. 1 and No. 2 scanner unit horizontal optical axis in parallel with each other.
III.
Note
Before starting this adjustment, the following items must have been completed. If not, this adjustment cannot reduce image distortion.
* The lens unit right angle adjustment must have been completed.
* The No. 4/5 mirror unit right angle adjustment must have been completed.
IV.
Cases when the adjustment is required
1) When the No. 1 and No. 2 scanner units are disassembled or their part is replaced.
2) When the scanner unit drive section is disassembled or its part is replaced.
3) When the copy image is distorted as shown below:
Document Copy A Copy B
V.
Necessary tools
* Screwdriver (+)
* Hex wrench
* Scale
* Test chart for distortion adjustment (Make a chart shown below by yourself.)
Draw a rectangle on a paper (B4 or 8 1/2" x 14") as shown below.
Be sure to make four right angles.
2) Remove the document glass.
3) Loosen the fixing screw of the No. 1 scanner unit wire.
Wire fixing screw
Wire fixing screw
4) Manually turn the scanner unit drive gear to bring No. 2 scanner unit into contact with No. 2 scanner unit positioning plate. When No.2 scanner unit makes contact with No.2
scanner unit positioning plate in the rear frame side simultaneously, the mechanical parallelism of No.2 scanner unit is proper.
If one side of No.2 scanner unit makes contact with No.2
scanner unit positioning plate and the other side does not, the parallelism is improper.
If the parallelism is improper, perform the procedure of step
5).
L=10mm
VI.
Adjustment procedure
1) Remove the right upper side cabinet and the document reference plate.
Document reference plate
Document table glass
5) Loosen the scanner unit drive pulley setscrew in the side where
No.2 scanner unit does not make contact with No.2 scanner unit positioning plate.
Set screw
Scanner unit drive pulley
Right upper side cabinet
7 – 9
6) Without moving the scanner unit drive pulley shaft, manually turn the scanner unit drive pulley in the same side of the loosened setscrew. When it makes contact with No.2 scanner unit positioning plate, tighten and fix the setscrew.
Do not move the shaft.
No.2 scanner unit
Positioning plate
Scanner unit drive pulley
(Note)
Allow a clearance of about 0.5mm between the scanner unit drive pulley and the positioning E-ring.
Procedures 1) to 8) are for adjustment of mechanical horizontal parallelism. No.1 scanner unit and No.2 scanner unit are fixed to the specified positions and the mechanical horizontal parallelism of No.2 scanner unit is adjusted.
0.5mm
7) Manually turn the scanner unit drive gear to bring No.2
scanner unit into contact with the positioning plate, and perform the procedure of step 4).
Repeat procedures of steps 4) to 7) until the parallelism of
No.2 scanner unit is properly set.
8) With No.2 scanner unit being in contact with No.2 scanner unit positioning plate, and insert the 1.0 mm spacer between No.1 scanner unit and upper-R frame, bring No.1
scanner unit into contact with upper-R frame, and fix it to the scanner unit drive wire.
Then the optical horizontal parallelism must be adjusted in the following procedures.
9) Set the image distortion check chart on the document table, and make a reduction copy (90%) on an B4 or 14" x 8 1/2" paper with the document cover open.
50mm
No.1 scanner unit Upper-right frame
Wire fixing screw
B4 or "11 x 14" size paper
Wire fixing screw
1.0mm spacer
7 – 10
10) Check the horizontal image distortion.
If LL = LR, there is no horizontal distortion.
LL and LR = Distance between the copy horizontal line and the outer edge of the black background
LL LR
Black background
11) If LL is not equal to LR, perform the following procedure.
Loosen the setscrew of the scanner unit drive pulley in the front or the rear frame.
Set screw
b. Vertical image distortion adjustment
I.
Summary
This adjustment is to adjust parallelism of the vertical optical axis of the copier and that of each mirror to eliminate vertical image distortion.
For adjusting vertical image distortion, the overall adjustment and the right-left balance adjustment must be performed independently.
The overall adjustment is performed by changing the height of
No.4/5 mirror unit in the front frame side. The right-left balance adjustment is performed by changing the right-left balance of
No.2 scanner unit rail.
The right-left balance adjustment must be performed in advance to the overall adjustment.
II.
Purpose
The purpose of this adjustment is to set parallelism of the vertical optical axis of the copier and that of No.4/5 mirror unit and
No.2 mirror unit to eliminate vertical image distortion.
III.
Note
Before performing this adjustment, the following adjustments must have been completed.
If not, this adjustment cannot be performed properly.
* The lens unit right angle adjustment
* No.4/5 mirror unit right angle adjustment
* Horizontal image distortion adjustment
IV.
Cases when the adjustment is required
1) When No.4/5 mirror unit is disassembled or its part is replaced.
2) When the scanner unit drive section is disassembled or its part is replaced.
3) When the copy image is distorted as follows:
Scanner unit drive pulley
12) Without moving the scanner unit drive pulley shaft, manually turn the scanner unit drive pulley whose setscrew was loosened, and adjust the parallelism of No.1 and No.2
scanner units.
Document Copy C Copy D
No.2 scanner unit.
No.1 scanner unit
Scanner unit drive pulley
Do not move the shaft.
13) Tighten the set screw of the scanner unit drive pulley.
14) Check the image distortion in the same manner as step
10).
Repeat procedures 11) to 14) until horizontal image distortion is eliminated.
VII.
Troubles caused by improper adjustment
V.
Necessary tools
* Screwdriver (+)
* Screwdriver (–)
* Scale
* Test chart for distortion adjustment (Make by yourself.)
Draw a rectangle on A4 or 8 1/2" x 11" paper as shown below:
Be sure to make four right angles.
L
L L
L = 10mm
L
7 – 11
VI.
Adjustment procedure
1) Set the test chart for image distortion adjustment on the document glass, and make a normal copy on a paper of A4 or 8 1/2" x 11".
2) Check image distortion in the right and the left sides.
If the both vertical lines are in parallel with each other, the right-left distortion balance is proper. (However, there may be some distortion.)
If all the four angles are right angles, there in no distortion and the following procedures are not required.
Large distortion
Small distortion
3) If the right-left distortion balance is improper, loosen the fixing screw of No.2 scanner unit rail to change and adjust the right-left balance of No.2 scanner unit rail.
(Note)
This procedure is to have the balance between the right image distortion and the left image distortion, which does not mean to eliminate the image distortion. Change the height of
No.2 scanner unit rail in the greater distortion side.
If the distortion in the lead edge side (when viewed in the paper transport direction) is greater, change the height of the left rail of No.2 scanner unit.
If the distortion in the rear edge side (when viewed in the paper transport direction) is greater, change the height of the right rail of No.2 scanner unit.
4) Change the height of the roller in No.4/5 mirror unit front frame side to adjust the vertical image distortion.
If the copy image is tilting as shown in sample (X) below, lower No.4/5 mirror unit. If it is tilting as shown in sample (Y) below, lift No.4/5 mirror unit.
(X) (Y)
Change the right side height of the rail.
5) Make a copy to check the vertical image distortion.
If the four angles are right angles, the adjustment is completed.
Change the left side height of the rail.
Scanner unit fixing screw
Scanner unit rail
Repeat procedures 2) and 3) until the right-left balance of image distortion is proper.
Repeat procedures 4) and 5) until the vertical image distortion is eliminated.
(Note) If a vertical image distortion is not eliminated with procedure 4), change the overall height of No.2
scanner unit rail. Then repeat procedures 1) to 5).
VII.
Troubles caused by improper adjustment
(4) Copy image center position adjustment
I.
Summary
The optical axis is changed by changing the lens rail position to optically align the document table and the vertical position of the copy image on the copy paper.
When the lens rail position is changed, the lens position in the front and the rear frame direction is changed to change the optical axis.
As a result, the document table is optically aligned with the copy image on the copy paper.
II.
Purpose
The purpose of this adjustment is to set the copy image center at the vertical center of the copy paper.
7 – 12
III.
Note
Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly.
* Lens unit right angle adjustment
* No.4/5 mirror unit right angle adjustment
* Image distortion adjustment
IV.
Cases when the adjustment is required
1) When the lens unit is disassembled or its part is replaced.
2) When the lens rail is disassembled or its part is replaced.
3) When the copy image is shifted from the vertical center of the paper.
V.
Necessary tool
* Screwdriver (+)
* Scale
* Test chart for center position adjustment (Make a chart shown below by yourself.)
Draw a line in the paper transport direction at the center of A4 or 8 1/2" x 11" paper.
5) Remove the right side cabinet and the document reference plate.
Document reference plate
Document table glass
Right upper side cabinet
6) Remove the document glass.
7) Remove the optical unit cover.
Optical unit cover
Center
Copy paper
(A4 or 8 1/2" x 11")
VI.
Adjustment procedure
1) Set the test chart for center position adjustment at the document reference position.
2) Make a normal copy (100%) on A4 or 8 1/2" x 11" paper.
3) Check that the image of the line is at the center of the paper.
(Standard: 0
±
1.5mm)
(Copy A)
(Copy B)
1.5mm or less
Shift
1.5mm or less
Copy image
Folding of copy paper
Folding of copy paper
Copy image
Shift
4) If the image of the line is not at the center of the paper, perform the following procedure.
8) Loosen the lens rail fixing screw, and slide the lens rail back and forth.
Lens rail
Fixing screw
Lens unit
9) Make a copy and check that the image line is at the center of the paper. If not, repeat the procedures 1) to 9) until the image line comes at the center of the paper.
7 – 13
VII.
Troubles caused by improper adjustment
(5) Focus adjustment (Resolution adjustment)
I.
Summary
The distance between the document and the photoconductor drum is changed by changing No.4/5 mirror unit drive lever position to adjust the focus.
II.
Purpose
The purpose of this adjustment is to correct the lens variations and the optical section dimensional variations to have good copy images with a proper focus.
III.
Note
Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly.
* Image distortion adjustment
IV.
Cases when the adjustment is required
1) When the lens or the mirror unit is disassembled or any one of their parts is replaced.
2) When the scanner unit drive section is disassembled or its part is replaced.
3) When a copy image of improper focus is obtained.
V.
Necessary tools
* Screwdriver (+)
* Test chart (One with the resolution adjustment chart)
VI.
Adjustment procedures
1) Set the test chart on the document table.
2) Make a normal copy (100%) on A4 or 8 1/2" x 11" paper.
3) Check that resolutions at the copy paper center and the four angles are as shown in the table below:
(Standard)
Copy center
Normal (100%) 5.0
Enlargement 5.0
Reduction 4.5
(Unit: lines/mm)
Corner
4.5
4.5
3.6
(Copy)
Check the corners.
4.5
5.0
5.6
6.3
7.1
8.0
9.0
9.1
9.2
9.2
9.2
9.2
9.2
2.8
3.2
3.6
4.0
If any resolution is out of the above specifications, perform the following procedures.
4) Remove the right cabinet and the document reference plate.
Document reference plate
Document table glass
Right upper side cabinet
5) Remove the document glass.
6) Remove the optical unit cover.
Optical unit cover
7) Loosen the fixing screw of No.4/5 mirror unit drive lever to change the position of No.4/5 mirror unit drive lever or No.4/5 mirror unit.
In this case, do not shake No.4/5 mirror unit, just change its position.
No.4/5 mirror rive lever fixing screw
No.4/5 mirror drive lever
7 – 14
No.4/5 mirror unit frame
8) Make a copy and check that the resolutions are in the specified range.
If any resolution is out of the specified range, repeat procedures 1) to 8).
VII.
Troubles caused by improper adjustment
(6) Copy magnification ratio adjustment
The copy magnification ratio adjustment must be performed in the vertical direction and in the horizontal direction.
In addition, the horizontal copy magnification ratio adjustment must be performed both in the document table mode and in the SPF mode.
Firstly perform the vertical copy magnification ratio adjustment, then perform the horizontal copy magnification ratio adjustment.
a. Vertical copy magnification ratio adjustment (Normal copy)
I.
Summary
The vertical copy magnification ratio adjustment must be performed in the normal (100%) copy mode and in the zoom copy mode.
In the normal (100%) copy mode, the lens home position is changed voluntarily with simulations 48-1 to adjust the vertical copy magnification ratio.
In the zoom copy mode, the lens shift ratio is changed with simulations 48-1 according to the lens home position set with simulations 48-1 to adjust the zoom copy magnification ratio.
The vertical copy magnification ratio adjusted in this procedure is used for the horizontal copy magnification ratio adjustment.
II.
Purpose
The purpose of this adjustment is to fit the displayed copy magnification ratio with the actual copy image size.
III.
Note
Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.
* Image distortion adjustment
* Focus adjustment
Firstly adjust the vertical magnification ratio in the normal
(100%) copy mode, then adjust in the zoom copy mode. Never reverse the sequence.
The vertical magnification ratio adjustment in the zoom copy mode must be performed when the vertical magnification ratio in the normal (100%) copy mode is proper but the copy size is not proper in the zoom copy mode.
The vertical magnification ratio adjustment must be performed in advance to the horizontal copy magnification ratio adjustment.
Never reverse the sequence. (The horizontal copy magnification ratio is based on the vertical copy magnification ratio.)
Scale
IV.
Cases when the adjustment is required
1) When the lens and the mirror unit are disassembled or the part is replaced.
2) When the scanner unit drive section is disassembled or the part is replaced.
3) When the main PWB is replaced.
4) When the RAM in the main PWB is replaced.
5) When "U2" trouble occurs.
6) When the position of the lens home position sensor is changed.
7) When the lens home position sensor is replaced.
8) When the copy image distortion adjustment is performed.
9) When the center position of copy image is adjusted.
10) When the focus is adjusted.
V.
Necessary tools
* Screwdriver (+)
* Scale
VI.
Adjustment procedure
(Normal (100%) copy mode: Vertical copy magnification ratio adjustment)
1) Set the scale vertically on the document table. (Use a long scale for precise adjustment.)
2) Set the copy magnification ratio to 100%.
3) Make a copy on A3 or 11" x 17" paper.
4) Measure the length of the copied scale image.
7 – 15
(When a 100mm scale is used as the original.) mm
1/2mm
1 0 2 0 100 110 120
JAPAN
130 140
Original scale
HARDDENCD
STAINLESS
150
Shizuoka
Paper feed direction mm
1/2mm
1 0 2 0
Reference
100 110 120
JAPAN
130
Comparison point
110
140
HARDDENCD
STAINLESS
150
Shizuoka
Copy
Scale
5) Calculate the vertical copy magnification ratio.
Vertical copy magnification ratio =
Copy image size
x 100 (%)
Original size
6) Check that the actual copy magnification ratio is within the specified range (100
±
0.8%).
If it is out of the specified range, perform the following procedures.
7) Execute simulations 48-1. (C
→
0
→
0
→
C
→
48
→
CB
→
1
→
CB)
The set vertical copy magnification ratio will be displayed in the COPIES SELECTED display.
8) Enter a new vertical copy magnification ratio with the numeric key and press PRINT button. The above procedure changes the lens home position and the vertical copy magnification ratio.
When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger.
When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.
Repeat procedures 1) to 8) until the vertical copy magnification ratio in the normal (100%) copy mode is within the specified range.
b. Vertical copy magnification ratio adjustment (Zoom copy)
1) Set a scale vertically on the document table as shown below:
(Use a long scale for precise adjustment.)
7 – 16
2) Set the copy magnification ratio to the max. level.
3) Make a copy on A4 or 8 1/2" x 11" paper.
4) Measure the length of the copied scale image.
5) Calculate the vertical copy magnification ratio.
Vertical copy magnification ratio =
Copy image size
x 100 (%)
Original size
6) Check that the actual copy magnification ratio is within the specified range (129
±
0.9%).
If it is out of the specified range, perform the following procedures.
7) Execute simulations 26-8. (C
→
0
→
0
→
C
→
26
→
CB
→
8
→
CB)
The set vertical copy magnification ratio in the zoom copy mode will be displayed in the COPIES SELECTED display.
8) Enter a new vertical copy magnification ratio with the numeric key and press PRINT button. The above procedure changes the lens shift ratio and the vertical copy magnification ratio in the zoom copy mode.
When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger.
When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.
Repeat procedures 1) to 8) until the vertical copy magnification ratio in the zoom copy mode is within the specified range.
VII.
Troubles caused by improper adjustment
c. Horizontal copy magnification ratio adjustment (Zoom copy)
I.
Summary
The horizontal copy magnification ratio adjustment must be performed in the document table copy mode and in the SPF copy mode. In the document table copy mode, scanning speed is changed with simulations 48-2 to adjust the horizontal copy magnification ratio.
In the SPF copy mode, document feed speed (SPF motor rotating speed) is changed with simulations 48-3 to adjust the horizontal copy magnification ratio.
II.
Purpose
The purpose of this adjustment is to fit the displayed copy magnification ratio with the actual copy magnification ratio.
III.
Note
Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.
* Image distortion adjustment
* Focus adjustment
* Vertical copy magnification adjustment
IV.
Cases when the adjustment is required
1) When the lens and the mirror unit are disassembled or the part is replaced.
2) When the scanner unit drive section is disassembled or the part is replaced.
3) When the main PWB is replaced.
4) When the RAM in the main PWB is replaced.
5) When "U2" trouble occurs.
6) When the copy image distortion adjustment is performed.
7) When the center position of copy image is adjusted.
8) When the focus is adjusted.
V.
Necessary tools
* Screwdriver (+)
* Scale
Scale
VI.
Adjustment procedure
(Document table copy mode: Horizontal copy magnification ratio adjustment)
1) Set the scale on the document table as shown below. (Use a long scale for precise adjustment.)
2) Set the copy magnification ratio to 100%.
3) Make a copy on A3 or 11" x 17" paper.
4) Measure the length of the copied scale image.
110 mm
1/2mm
1 0 2 0 100 110 120
JAPAN
130 140
Original scale
HARDDENCD
STAINLESS
150
Shizuoka mm
1/2mm
1 0 2 0
Reference
100 110 120
JAPAN
130
Comparison point
5) Calculate the horizontal copy magnification ratio.
Horizontal copy magnification ratio =
Copy image size
Original size
x 100 (%)
6) Check that the actual copy magnification ratio is within the specified range (100
±
0.8%).
If it is out of the specified range, perform the following procedures.
7) Execute simulations 48-2. (C
→
0
→
0
→
C
→
48
→
CB
→
2
→
CB)
The set horizontal copy magnification ratio will be displayed in the COPIES SELECTED display.
140
HARDDENCD
STAINLESS
150
Shizuoka
Copy
Paper feed direction
8) Enter a new horizontal copy magnification ratio with the numeric key and press PRINT button. The above procedure changes the lens home position and the horizontal copy magnification ratio.
When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger.
When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.
7 – 17
Repeat procedures 1) to 8) until the horizontal copy magnification ratio in the normal (100%) copy mode is within the specified range. (SPF copy mode: Horizontal copy magnification ratio adjustment)
1) Set the copied scale image paper which was made in the horizontal copy magnification ratio adjustment in the document table copy mode so that the scale image is horizontal in the SPF.
Note that the copy magnification ratio of the copied scale image must be proper.
2) Set the copy magnification ratio to 100%.
3) Make a copy on A4 or 8 1/2" x 11" paper.
4) Measure the length of the copied scale image.
110 mm
1/2mm
1 0 2 0 100 110 120
JAPAN
130 140
Original scale
HARDDENCD
STAINLESS
150
Shizuoka mm
1/2mm
1 0 2 0
Reference
100 110 120
JAPAN
130
Comparison point
5) Calculate the horizontal copy magnification ratio.
Horizontal copy magnification ratio =
Copy image size
Original size
x 100 (%)
6) Check that the actual copy magnification ratio is within the specified range (100
±
0.8%).
If it is out of the specified range, perform the following procedures.
7) Execute simulations 48-3. (C
→
0
→
0
→
C
→
48
→
CB
→
3
→
CB)
The set horizontal copy magnification ratio in the SPF copy mode will be displayed in the COPIES SELECTED display.
8) Enter a new horizontal copy magnification ratio with the numeric key and press PRINT button. The above procedure changes the document feed speed of the SPF and the horizontal copy magnification ratio.
When the copy magnification ratio is set to a larger value, the actual copy magnification ratio becomes larger.
When the copy magnification ratio is set to a smaller value, the actual copy magnification ratio becomes smaller.
Repeat procedures 1) to 8) until the horizontal copy magnification ratio in the SPF copy mode is within the specified range.
VII.
Troubles caused by improper adjustment
140
HARDDENCD
STAINLESS
150
Shizuoka
Copy
Paper feed direction
(7) Uniformity adjustment
I.
Summary
The uniformity adjustment is performed by changing the exposure plate position attached to No.1 scanner unit.
The above procedure changes the balance of light quantity radiated onto the document.
II.
Purpose
The purpose of this adjustment is to have uniform copy density.
III.
Note
When this adjustment is performed, the exposure will be changed. Therefore, the copy density adjustment must be performed after this adjustment. Also, this adjustment must be performed always before the copy density adjustment.
IV.
Cases when the adjustment is required
1) When the reflector is replaced.
2) When the copy lamp is replaced.
3) When the exposure adjustment plate is disassembled or replaced.
4) In maintenance
V.
Necessary tools
* Screwdriver (+)
* A4 or 8 1/2" x 11" paper
* Half-tone paper of A4 or 8 1/2" x 11" or larger
7 – 18
VI.
Adjustment procedure
1) Set a half-tone paper of A4 or 8 1/2" x 11" on the document table.
2) Set the exposure level to the min. level in the photo mode, and make a copy on A4 or 8 1/2" x 11" paper.
3) Check the uniformity. If there is any unevenness, perform the following procedures.
4) Move the exposure adjustment plate of the lighter copy section towards Y or move the exposure adjustment plate of the darker copy section towards X.
(Example)
If a copy shown below is made, move the front frame side of the sub exposure adjustment plate in the direction of X to adjust the exposure balance.
Less exposure
(Dark copy)
Paper exit direction
(8) Image loss/void area adjustment
The image loss/void area adjustment is performed by the combination of the copied image position adjustment on the copy paper and the void area adjustment.
Since the image loss and the void area are closely related each other, they must be adjusted simultaneously.
(Definitions of image loss and void area)
Void area: Empty (white) area on a copy paper (without toner on it)
(Document)
(Copy)
Y
Half-tone copy
[Fig. 1]
Standard fixing position
Hole
(Center)
Exposare adjusting plate
Y Y Y
X X
Exposare adjusting plate
X X
5) Make a copy in the same manner as procedure 2), and check the uniformity.
Repeat procedures 1) to 5) until proper uniformity is obtained.
VII.
Troubles caused by improper adjustment
Paper lead edge
Li
Lv
Li: Lead edge image loss
Lv: Lead edge void area
7 – 19
a. Copy image position adjustment (SF-2314/2414)
I.
Summary
In order to adjust the copy image position on a copy paper, the lead edge position of an image on the photoconductor for the lead edge position of a document on the document table is changed with simulations 50-1, and the relative position of the paper to the image position on the photoconductor is changed.
In the models which have no zoom copy functions, however, the lead edge position of an image on the photoconductor for the lead edge position of a document on the document table is not changed.
The relative position of the paper is changed at OFF timing of the scanner home position sensor after starting scanning to adjust the copy image position on the paper.
On the SF-2514, to adjust the copy image position on a copy paper, the lead edge position of an image on the photoconductor for the lead edge position of a document on the SPF is changed with simulations 50-1.
After adjusting the copy image position with the above procedure, the M.C grid OFF timing for the lead edge position of an image on the photoconductor is changed with simulations 45-1 to adjust the void area.
II.
Purpose
The purpose of this adjustment is to improve separation in the photoconductor section and in the fuser section and reduce dirt on the fuser section pawl by obtaining the max. effective copy area and the paper void area.
III.
Note
If the proper void area is not obtained, the separation ability in the photoconductor section may be degraded and dirt on the fuser section pawl may be increased.
Before performing this adjustment, the following adjustments must have been completed. If not, this adjustment cannot be performed properly.
* Adjustment of paper pressure against the SPF resist roller
(Sim 51-2 set value must be properly set.)
* Adjustment of the copy image position on the copy paper
(Sim 50-1 set value must be properly set.)
IV.
Cases when the adjustment is required
1) When the optical section is disassembled or its part is replaced (including the scanner home position sensor).
2) When the SPF unit is disassembled or its part is replaced.
3) When the main PWB is replaced.
4) When the RAM in the main PWB is replaced.
5) When "U2" trouble occurs.
6) When the resist roller unit is disassembled or replaced.
7) When the blank lamp is replaced.
V.
Necessary tools
* Screwdriver
* Scale
* Test chart
* Black background document
(Copy image position adjustment)
1) Execute simulations 45-1. (C
→
0
→
0
→
45
→
CB
→
1
→
CB)
Simulations 45 is to adjust the size of the void area in the lead edge of the copy paper.
The set adjustment value is displayed on the COPIES
SELECTED display.
2) Set the set value of simulations 45-1 to "0."
Enter "0" with the numeric key and press PRINT button.
3) Execute simulations 50-1. (C
→
0
→
0
→
C
→
50
→
CB
→
1
→
CB)
This simulation adjusts the copy image position for the paper. One of the set adjustment values is displayed on the
COPIES SELECTED display.
Adjustment value A:
(SF-2414/2514)
Corresponds to the time interval from the scanner unit starting and the scanner home position sensor OFF to reaching at the lead edge of the document. That is, this is the value used to determine the optical document lead edge reference position, and it must be fit with the edge section of the document reference plate.
If this value is improper, when the copy magnification ratio is changed, the copy image lead edge position for the copy paper edge will fluctuate.
(Does not exist in the models which have no zoom copy functions.)
Adjustment value B:
(SF-2414/2514)
Corresponds to the time interval from the scanner unit starting and the scanner home position sensor OFF to the resist roller ON.
According to this value, the paper feed timing for the image on the photoconductor drum is changed and the copy image position on the copy paper is also changed.
When the set value is changed by "1," the position of the copy image on the copy paper is changed by about
0.123 mm.
When the set value is made greater, the copy image position for the copy paper moves backward. When the set value is made greater, the copy image position for the copy paper moves forward.
Adjustment value C:
(SF-2514 only)
Corresponds to the time interval from the SPF resist roller ON to the copier resist roller ON. This value is used to change the paper feed timing for the image on the photoconductor drum and to change the copy image position on the copy paper.
When the set value is changed by
"1," the copy image position is changed by about 0.123 mm.
When the set value is made greater, the copy image position for the copy paper moves backward. When the set value is made greater, the copy image position for the copy paper moves forward.
Adjustment value A:
(SF-2314)
Corresponds to the time interval from the scanner unit starting and the scanner home position sensor OFF to the resist roller ON.
According to this value, the paper feed timing for the image on the photoconductor drum is changed and the copy image position on the copy paper is also changed.
When the set value is changed by
"1," the position of the copy image on the copy paper is changed by about
0.123 mm.
When the set value is made greater, the copy image position for the copy paper moves backward. When the set value is made greater, the copy image position for the copy paper moves forward.
Use the paper tray select key to select the display of adjustment value A, adjustment value B, and to select the set mode.
Display lamp
Copier tray cassette paper feed lamp ON.
Copier tray cassette paper feed lamp BLINKS.
Copier tray cassette/option tray cassette paper feed lamps ON.
Display content/set mode
Adjustment value A
Adjustment value B
(SF-2414/2514)
Adjustment value C
(SF-2514 only)
4) Set adjustment value A, adjustment value B, and adjustment value C to "0." (For the model without zoom functions, set adjustment value B only.)
Enter "0" with the numeric key and press PRINT button.
7 – 20
5) Press the scale onto the document alignment plate and set it horizontally as shown below:
L 2
Scale
10 20 30 40 50 60 70
Scale image lead edge
6) Execute simulations 50-1 to make several copies at each of
129% and 64%.
(For the models without zoom functions, make several copies at 100%.)
7) Measure the distance from the paper lead edge to the copy image lead edge of each copied papers, and calculate the average value.
(Not required for the models without zoom functions.)
L1: Average distance (mm) from 129% copied paper lead edge to the copy image lead edge
L2: Average distance (mm) from 64% copied paper lead edge to the copy image lead edge
L1
Reduction copy (x 0.64)
8) Enter the measure values in procedure 7) into the formula below to calculate adjustment value A and adjustment value B. (Not required for the SF-2314.)
A = 8.2423 x (L1 – L2)
B = 16.0568 x L2 – 7.9661 x L1
9) Set the adjustment values obtained in procedure 8). (Not required for the SF-2314.)
10) Execute simulations 50-1 to make several copies at each of
129% and 64%. (Not required for the SF-2314.)
11) Measure the distance from the paper lead edge to the copy image lead edge of each copied papers (129% and 64%), and calculate the average value.
(Not required for the SF-2314.) mm
1/2mm
10 2 0 3 0
Scale image lead edge
Enlargement copy (x 1.54)
7 – 21
12) Check that the difference between the distance from the copy paper lead edge to the copy image lead edge of
129% copy and that of 64% copy is in the range of 0
±
1.0
mm. (Not required for the models without zoom functions.)
If the difference is out of the above range, change adjustment value A and repeat procedures 10) and 12) until the difference is within the above range.
If adjustment value A is improper, the copy image lead edge position fluctuates in proportion to the copy magnification ratio.
LA mm
1/2mm
10 20 30
Scale image lead edge
LA-LB
=±1.0mm
13) Make a 100% copy, and check that the copy image lead edge is in the range of 0
±
1.5 mm from the paper lead edge position reference.
If it is out of the above range, change adjustment value B and repeat procedure 13) until it is within the above range.
(For the SF-2314, change adjustment value A.)
Copy scale image mm
1/2mm
10 20 30
0±1.0mm
Paper lead edge
14) Set documents in the SPF, and make several copies at
100% with simulations 50-1.
15) Measure the distance from the paper led edge to the copy image lead edge of each copy paper, and calculate the average value.
L 3
Enlargement copy (x 1.54)
LB
10 20 30 40 50 60 70
Scale image lead edge mm
1/2mm
1 0 2 0 30
Scale image lead edge
Normal copy (100%)
L3: Average distance (mm) from the copy paper lead edge to the copy image lead edge (Only in the SPF models)
16) Substitute the average value obtained in procedure 15) for
L3 in the formula below to obtain adjustment value C.
C = 8.0906 x L3 (Only the SPF models)
17) Set the adjustment value obtained in procedure 16). (Only the SPF models)
Reduction copy (x 0.64)
7 – 22
18) Set documents in the SPF, make 100% copies, and check that the copy image lead edge is in the range of 0
±
1mm from the paper lead edge position reference. (Only the SPF models)
If it is out of the above range, change adjustment value C and repeat procedure 18) until it is in the range of the above range.
Copy scale image mm
1/2mm
10
0±1.0mm
20 30
Paper lead edge
b. Void area adjustment
I.
Summary
The copy image position on the copy paper is adjusted with simulations 50-1, then the main corona grid ON timing for the image lead edge on the photoconductor is changed with simulations 45 to adjust the lead edge void area.
In concrete, in the case of the document table mode, the adjustment is performed by changing the time interval from the scanner motor ON to the main corona grid ON. In the case of the
SPF mode, the adjustment is performed by changing the time interval from the SPF resist roller ON to the main corona grid
ON.
On the other hand, the rear edge void is adjusted by varying the
OFF timing of the main corona grid after the PPD detects the rear edge of paper and turns off.
There are two kinds of the rear edge void adjustment. One is in the tray paper feed mode, and the other is in the manual paper feed mode.
Selection of the adjustment mode is made by the paper feed unit select button and the display lamp.
Mode
Paper tray
Manual
Paper feed unit lamp
— Lead edge void amount adjustment mode
Read edge void amount adjustment mode
(Tray feed)
Read edge void amount adjustment mode
(Manual paper feed)
Light
Blink
—
—
Blink
II.
Purpose
The purpose of this adjustment is to improve separation in the photoconductor section and in the fuser section and reduce dirt on the fuser section pawl by obtaining the max. effective copy area and the proper void area.
III.
Note
If the proper void area is not obtained, the separation ability in the photoconductor section may be degraded and dirt on the fuser section pawl may be increased.
Before performing this adjustment, the following adjustment must have been completed. If not, this adjustment cannot be performed properly.
* Adjustment of paper pressure against the resist roller
(Sim 51-2 set value must be properly set.)
* Adjustment of paper pressure against the SPF resist roller
(Sim 51-2 set value must be properly set.)
* Adjustment of copy image position (Sim 50-1, A, B, C)
Scale
IV.
Cases when the adjustment is required
1) When the optical section is disassembled or its part is replaced (including the scanner home position sensor).
2) When the SPF unit is disassembled or its part is replaced.
3) When the main PWB is replaced.
4) When the RAM in the main PWB is replaced.
5) When "U2" trouble occurs.
6) When the resist roller unit is disassembled or replaced.
V.
Necessary tools
* Screwdriver
* Scale
* Test chart
* Black background document
VI.
Adjustment procedure
(Lead edge void area adjustment)
1) Press the scale onto the document alignment plate and set it horizontally as shown below:
B4 or "14 x 8½" paper
2) Execute simulations 45-1. (C
→
0
→
0
→
C
→
45
→
CB
→
1
→
CB)
Simulations 45-1 is to adjust the size of the void area in the lead edge of the copy paper.
The set adjustment value is displayed on the COPIES
SELECTED display.
Press the paper feed unit select button to light the tray paper feed lamp and set the machine to the lead edge void adjustment mode.
3) Set the adjustment value to "99."
Enter "99" with the numeric key, and press PRINT button.
4) With the document cover open, make several copies at
100%.
7 – 23
5) Measure the lead edge void area of each copy.
Void area mm
1/2mm
1 0 20 30
Copy scale image
13) Make a copy in the SPF mode and check that the void area is within the specified range.
Void area mm
1/2mm
1 0 20 30
Copy scale image
Black background edge
Paper lead edge
6) Calculate the average void area.
7) Calculate the void area adjustment value from the formula shown below.
Current set value (99) –
current void area
( mm
)
0.123
= Adjustment value (Decimal point rounded)
8) Set the adjustment value obtained in procedure 7).
(Decimal point rounded off)
9) With the document cover open, make several copies at
100%.
10) Measure the copy lead edge void area.
11) Measure the distance from the paper lead edge to the copy image lead edge of each copied papers (129% and 64%), and calculate the average value.
(Not required for the models without zoom functions.)
12) Check that the void area is within the specified range.
Void area mm
1/2mm
1 0 20 30
Copy scale image
Black background edge
Paper lead edge
Standard:
1
∼
3 mm
If the void area is outside the specified range, check adjustment value C of simulations 50-1 or check the SPF unit mechanism section.
(End edge void area adjustment) Cassette paper feed mode
1) Set a scale and A4 or 8 1/2" x 11" paper on the document table as shown below:
B4 or "14 x 8½" paper
Black background edge
Paper lead edge
Standard:
0
+
3
–0
mm
If the void area is outside the specified range, change the set value of simulations 45 and repeat procedures 9) to
12).
When the set value is changed by "1," the void area is changed by about 0.123 mm.
When the set value is made greater, the void area becomes greater, and vise versa.
2) Execute simulations 45. (C
→
0
→
0
→
C
→
45
→
CB
→
1
→
CB)
The set adjustment value is displayed on the COPIES
SELECTED display.
Press the paper feed unit select button to blink the cassette paper feed lamp and to set the machine to the end edge void adjustment mode in the cassette paper feed mode.
3) Set the adjustment value to "99."
Enter "99" with the numeric key, and press PRINT button.
4) With the document cover open, make several copies at
100%.
7 – 24
5) Measure the end edge void area of each copy.
Void area mm
1/2mm
10 20 30
Black background edge
Paper end edge
6) Calculate the average void area.
7) Calculate the void area adjustment value from the formula shown below.
Current set value (99) –
current void area
( mm
)
0.123
= Adjustment value (Decimal point rounded)
8) Set the adjustment value obtained in procedure 7).
(Decimal point rounded off)
9) With the document cover open, make several copies at
100%.
10) Measure the copy lead edge void area.
11) Measure the distance from the paper end edge to the copy image lead edge of each copied papers (129% and 64%), and calculate the average value.
(Not required for the models without zoom functions.)
12) Check that the void area is within the specified range.
Void area
(End edge void area adjustment) Paper feed tray mode
1) Press the paper feed unit select button to blink the manual paper feed lamp and to set the machine to the rear edge void adjustment mode in the manual paper feed mode.
2) Perform the end edge void adjustment in the manual paper feed mode similarly with the end edge void adjustment in the cassette paper feed mode.
mm
1/2mm
10 20 30
Black background edge
Paper end edge
Standard:
1
∼
3 mm
If the void area is outside the specified range, change the set value of simulations 45 and repeat procedures 9) to
12).
When the set value is changed by "1," the void area is changed by about 0.123 mm.
When the set value is made greater, the void area becomes greater, and vise versa.
7 – 25
3. COPY DENSITY ADJUSTMENT
(1) Copy density adjustment timing
The copy density adjustment must be performed in the following cases:
✱ When in maintenance.
✱ When the high voltage unit output current or voltage is adjusted.
✱ When the developing bias voltage is adjusted.
✱ When the copy lamp is replaced.
✱ When the optical section is cleaned.
✱ When an optical part is replaced.
✱ When the optical section is disassembled.
✱ When the photoconductor drum is replaced.
✱ When the developer is replaced.
✱ When the AE sensor is replaced.
✱ When the main control PWB is replaced.
✱ When the EEPROM on the main control PWB is replaced.
✱ When the memory trouble (U2) occurs.
✱ When a part of the copy lamp control circuit is replaced.
✱ When the AC power source PWB is replaced.
(2) Note for copy density adjustment
1) Necessary procedures before adjustment
✱ Clean the optical section.
✱ Clean the AE sensor.
✱ Clean or replace the charger wire.
✱ Check that the high voltage section voltage and the developing bias voltage are in the specified range.
2) Note
✱ The auto mode copy density adjustment must be performed after the normal mode copy density adjustment. Never reverse the sequence.
(3) Necessary items for the copy density adjustment
✱ Test chart
(Use one of the following three: UKOG-0162FCZZ, UKOG-
0089CSZZ, KODAK GRAY SCALE)
✱ B4 (14
″ ×
8 1/2
″
) white paper
1 2 3 4 5 6 7 8 9 10 W
(4) Copy density adjustment mode
The copy density adjustment must be performed in the following five mode:
Original table copy mode
SPF copy mode
Copy density adjustment mode
Exposure level
Normal mode Non-toner-save mode 1
Sim No
5 46-1
Toner save mode 1
Photo mode Non-toner-save mode 1
5
5
Auto mode Non-toner-save mode 1
Toner save mode 1
5
5
Normal mode Non-toner-save mode Set to the
Toner save mode copy mode in
Photo mode Non-toner-save mode the original
Auto mode Non-toner-save mode table copy
Toner save mode mode.
51-6
(5) Copy density adjustment procedure
The copy density is adjusted by using Simulations 46 to change the exposure level and the copy lamp voltage in each copy mode.
The copy density adjustment must be performed in the five modes.
To select each mode, use the copy mode select key.
In the SF-2214, copy density adjustment in the SPF copy mode is also performed.
A. Test chart (UK0G-0162FCZZ) setting
1) Set the test chart and B4 (14
″ ×
8 1/2
″
) white paper on the original table as shown below.
The sensing area of the AE sensor is about 120 mm wide from the rear frame side edge on the original table glass. Place the white paper on that area, but keep the test chart away from that area.
White paper
Test chart
120mm
Front side
Test chart comparison
UKOG-0162FCZZ
DENSITY No.
UKOG-0089CSZZ
DENSITY No.
KODAK GRAY
SCALE
1
0.1
2
1
3
0.2
4
2
5
0.3
6
3
7 8
4
9 10
0.5 1.9
19
W
0
A
SHARP CORPORATION
MADE IN JAPAN
7 – 26
2) Close the document cover.
3) Execute Sim 47.
4) Cancel the Sim 47 after off the copy lamp.
B. Normal copy mode (Non-toner-save mode) copy
density adjustment
1) Enter the simulations 46-1 mode.
2) Set the adjustment mode to the normal copy mode (Non-tonersave mode).
(Press the copy mode select key to light the normal copy mode lamp.)
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1
2 x
8 1
2
8 1 2 x
8 1
2 x
11
ZOOM
8 1 2 x
14 8 1 2 x
11
8 1 2 x 11 5 1 2 x
8 1 2
%
Copy mode select key
Copy density adjustment key
3) Set the density level to "1" with the copy density adjustment key.
(The currently set copy lamp voltage level will be displayed on the
COPIES SELECTED display.)
Lighting
Copy mode lamp Copy density display lamp
AUTO
MANUAL
PHOTO
EXPOSURE
1 2 3 4 5
TRAY SELECT
Copy sheet display
COPY RATIO
129%
117%
100%
78%
64%
5
1
2 x
8
1
2
8 1 2 x
8
1
2x
11
ZOOM
8 1 2 x 14 8
1
2 x 11
8 1 2x 11 51
2 x 81
2
%
Copy mode select key
Copy density adjustment key
4) Press the print button to make a copy.
Check the gray scale copy to insure that "6" is slightly copied and
"5" is not copied.
When the copy density is too dark, increase the copy lamp voltage level.
When the copy density is too light, decrease the copy lamp voltage level.
Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.
1 2 3 4 5 6 7 8 9 10 W
Slightly copied
Not copied
5) Set the copy density level to "5" with the copy density adjustment key.
(The currently set copy lamp voltage level will be displayed on the
COPIES SELECTED display.)
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2 x 11
8 1 2 x
ZOOM
8 1
2 x
14 8 1 2 x 11
8 1
2 x
11 5 1 2 x 8 1 2
%
Copy mode Copy density select key adjustment key
Lighting
6) Press the print key to make a copy.
Check the gray scale copy to insure that "2" is clearly copied and
"1" is not copied.
When the copy density is too dark, increase the copy lamp voltage level.
When the copy density is too light, decrease the copy lamp voltage level.
Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.
1 2 3 4 5 6 7 8 9 10 W
C. Normal copy mode (Toner save mode) copy density
adjustment
1) Set the adjustment mode to the normal copy mode (Toner save mode). (Press the copy mode select key to light the normal copy mode lamp and the photo copy mode lamp.)
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2 x 11
8 1 2x 11 10 14
ZOOM
8 1
2x
14 8 1 2 x 11
8
1
2 x
11
5
1 2 x 8
1 2
%
Copy mode select key
Copy density adjustment key
Adjust in the same manner as the above copy density adjustment procedures i the normal mode (Non-toner-save mode).
D. Photo copy mode (Non-toner-save mode) copy density adjustment
There is no toner save mode in the photo copy mode.
1) Set the adjustment mode to the photo copy mode.
(Press the copy mode select key to light the photo copy mode lamp.)
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2 x 11
8 1 2x 11 10 14
ZOOM
8 1
2x
14 8 1 2 x
11
8
1
2 x
11
5
1 2 x 8
1 2
%
Copy mode select key
Copy density adjustment key
1
Check the gray scale copy to insure that "7" is slightly copied and
"6" is not copied.
When the copy density is too dark, increase the copy lamp voltage level.
When the copy density is too light, decrease the copy lamp voltage level.
Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.
2 3 4 5 6 7 8 9 10 W
Slightly copied
Not copied
E. Auto copy mode (Non-toner-save mode) copy density adjustment
1) Set the adjustment mode to the auto copy mode (Non-toner-save mode). (Press the copy mode select key to light the auto copy mode lamp.)
Not copied
Copied
7 – 27
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2 x 11
ZOOM
8 1 2 x 11 10 14
8 1
2 x
14 8 1 2 x
11
8
1
2 x
11
5
1 2 x 8
1 2
%
Copy mode select key
Copy density adjustment key
2) Set the density level to "1" with the copy density adjustment key.
(The currently set copy lamp voltage level will be displayed on the
COPIES SELECTED display.)
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5
1 2 x
8
1 2
8
1 2x
11
ZOOM
8 1 2 x
8 1 2 x 14 8
1
2 x 11
8 1 2x 11 51
2 x 81
2
%
Copy mode Copy density select key adjustment key
3) Set the copy lamp voltage level set value to "0."
Enter the new set value with the numeric key and press the print button, then the entered value will be set. (Be sure to set to "0.")
4) Set the copy density level to "5" with the copy density adjustment key.
(The currently set copy lamp voltage level will be displayed on the
COPIES SELECTED display.)
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1 2 x 8 1 2 8 1 2 x 11
8 1 2x 11 10 14
ZOOM
8 1
2x
14 8 1 2 x
11
8
1
2 x
11
5
1 2 x 8
1 2
%
Copy mode select key
Copy density adjustment key
Lighting
5) Press the print button to make a copy.
Check the gray scale copy to insure that "3" is slightly copied and
"1" is not copied.
When the copy density is too dark, increase the copy lamp voltage level.
When the copy density is too light, decrease the copy lamp voltage level.
Enter a new set value of the copy lamp voltage level with the numeric keys and press the print button, then the entered value will be set and the copy density will be adjusted according to the set value.
1 2 3 4 5 6 7 8 9 10 W
F. Auto copy mode (Toner save mode) copy density
adjustment
1) Set the adjustment mode to the auto copy mode (Toner save mode).
(Press the copy mode select key to light the auto copy mode lamp and the photo copy mode lamp.)
White paper
Test chart
Front side
120mm
Lighting
Copy mode lamp
AUTO
MANUAL
PHOTO
Copy density display lamp
EXPOSURE
1 2 3 4 5
Copy sheet display
TRAY SELECT COPY RATIO
129%
117%
100%
78%
64%
5 1
2 x
8 1
2
8 1 2 x
8 1
2x
11
ZOOM
8 1 2 x
14 8 1
2 x 11
8 1 2x 11 51
2 x 81
2
%
Copy mode select key
Copy density adjustment key
Adjust the copy density in the same manner as the Photo copy mode
(Non-toner-save mode) copy density adjustment.
G. Copy density adjustment in the SPF copy mode
In copy density adjustment in the SPF copy mode, the copy density in each individual copy mode is not adjusted separately. All copy densities in the copy modes adjusted by the original table copy mode copy density adjustment are shifted together.
When, therefore, the original copy mode copy density is changed, this adjustment should be also performed.
1) Execute Simulation 51-6.
The SPF copy mode copy density level is displayed on the copy quantity display.
2) Adjust the set value so that the copy density becomes the same as the original copy mode copy density level.
(Compare in the photo copy mode for clear distinction.)
The reference set value is "7" and the set value can be changed in the range of 0
∼
99.
Slightly copied
Not copied
7 – 28
(6) Copy density adjustment table
Copy mode Mode display Density level
1
N.TS
N
5
Normal
1
TS N & P
5
Photo N.TS
P
1
5
1 2
A : Auto copy mode
P : Photo copy mode
N : Normal copy mode
3 4
Test chart copy density
5 6 7 8
N.TS : Non-toner-save mode
TS : Toner save mode
9 10 W
Slightly copied
1 2
Not copied
3 4 5 6 7 8 9 10 W
Not copied
1 2 3
Copied
4 5 6 7 8 9 10 W
Slightly copied
1 2
Not copied
3 4 5 6 7 8 9 10 W
Copied
Not copied
1 2 3 4 5 6 7 8 9 10 W
Slightly copied
1 2
Not copied
3 4 5 6 7 8 9 10 W
Not copied
Copied
1
N.TS
A
Auto
5
1
1 2 3 4 5 6 7 8 9 10 W
1
Not copied
2 3 4 5
Slightly copied
6 7 8 9 10 W
Slightly copied
Not copied
TS A & P
5
7 – 29
4. Others
(1) Transfer charger wire installation
Install the transfer charger wire as shown below. (Clean the charger wire at every 40K copies and replace it at every 80K copies.)
Transfer charger unit (TC unit)
10 0.5
(Note for replacement of the charger wire) a Do not twist or deform the charger wire. b After replacement, be sure to clean the charger wire with alcohol.
(Be sure to use alcohol only.) c After wiping with alcohol, wipe with a dry cloth. d Use charger wire of 70
µ
(DWIR-0466CSZZ).
Tension spring
Cut the wire at the root of the screw
Wind two turns and tighten the screw
2~3mm
(2) How to adjust the separation corona voltage
1) Install the developer unit and OPC drum unit into the main body.
2) Set the hight voltage probe (1000:1) to digital multimeter.
3) Set the digital multimeter range to DC V.
4) Connect the digital multimeter to the SHVG check pin on the lower unit control PWB and chassis GND.
5) Execute simulation 8-7 and adjust the separation corona voltage to 3.5
±
0.35v by rotates VR1 on the lower unit control PWB.
(SHVG turns on 30 sec)
(3) How to adjust the developing bias voltage
1) Install the developer unit and OPC drum unit into the main body.
2) Set the digital multimeter range to DC 500V.
3) Connect the digital multimeter to the developing bias output terminal on the lower unit control PWB and chassis GND.
4) Execute simulation 8-1 and adjust the developing bias voltage to
–200
±
3v by rotates VR2 on the lower unit control PWB.
(Developing bias turns on 30sec)
Charger wire
Improper
Charger wire Improper
CORONA VOLTAGE IN THE EACH COPY MODE
N.T.S
T.S
COPY MODE
NORMAL
AE
PHOTO
NORMAL
AE
MAIN CORONA UNIT
MAIN CORONA VOLTAGE
(V)
–5.3Kv
MAIN CORONA GRID
VOLTAGE (V)
780
–5.3Kv
–5.3Kv
–5.3Kv
–5.3Kv
780
478
660
660
7 – 30
TRANSFER CORONA
VOLTAGE (V)
–5.3Kv
–5.3Kv
–5.3Kv
–5.3Kv
–5.3Kv
SEPAREATION CORONA
VOLTAGE (V)
+2.7Kv
+2.7Kv
+2.7Kv
+2.7Kv
+2.7Kv
[8] SIMULATIONS
1. Outline
This model is equipped with the simulations feature which allows the following operations with the keys on the operation panel:
1) Adjustments
2) Setting of specifications and functions
3) Resetting trouble codes
4) Checking operations
2. Purpose
The purpose of the simulations feature is to improve serviceability in repairs and adjustments.
Since the mechanical adjustments can be performed electrically, the above purpose is achieved with low costs.
3. Operating procedure
Simulations operating procedure
Start
Press the clear key
Press the zero key
Press the zero key
Press the clear key
All lamps and indicators on the operation panel go off.
Ready for entry of the main test command number
Enter the main test command number with numeric keys
The main simulations number is displayed on the copy quantity display
Is there a sub code?
NO
Press the print key
YES
Press the print key
"00" blinks on the copy quantity display. Ready for entry of the sub code.
Enter the sub code with numeric keys
Press the print key
The set adjustment value or the counter value is displayed on the copy quantity display
To change the set adjustment value or the counter value, enter a new value with numeric keys
NO
Is the test command for operation
check?
YES
Operations according to the simulations are performed
The entered value is displayed on the copy quantity display
Press the print key
The new set value is stored
Do you perform another
simulations?
NO
Press the clear key
YES
All the lamps and indicators on the operation panel go off.
Ready for entry of the main simulations number
Press the clear key
End
YES
Is the main code same?
NO
Enter a new main code
The main code is display on the copy quantity display
NO
Is the sub code display?
YES
Press the clear key
8 – 1
4. Purpose list
Purpose
Setting
Counter
Operation check
Trouble cancel
Section
Adjustments Paper feed section
Optical section
Developer
Process
Drum counter
Developer counter
General
(Aging mode)
Paper feed section
Developer section
Other
Main
51
26
45
46
51
47
48
SPF
Specifications
Paper feed section
Fuser section
Process
Maintenance counter
Total counter
Optical section
SPF
Operation panel
Fuser section
Process
50
8
25
8
48
51
26
26
26
43
44
20
21
22
22
24
22
42
22
0 Key
(Does not enter the simulation mode.)
7
30
6
1
1
4
2
1
7
12
1
6
5
2 2
3
4
3
4
1
2
3
5
5
5
6
44
5
2
2
3
4
2
4
5
1
1
2
1
2
1
1
30
12
13
1
1
6
4
2
18
10
25
6
14
16
1
1
2
3
1
2
4
1
2
1
7
9
3
Sub
2
8
1
1
6
Function
Resist amount adjustment
Copy magnification ratio adjustment (zooming)
Lead edge void amount setting
Copy density (exposure level) adjustment
SPF exposure correction
AE sensor characteristics value data auto input
Front-rear direction magnification ratio adjustment (Vertical direction)
Paper transport direction magnification ratio adjustment (Horizontal direction)
Lead edge image position adjustment
Developing bias voltage check
Auto developer adjustment
MC/TC output check (Normal mode)
MC/TC output check (Photo mode)
MC/TC output check (Toner save mode)
Separation charger (SC)
MC/TC/SC output check
Paper transport direction magnification ratio adjustment (When the SPF is used in the horizontal direction)
Exposure correction in enlargement copy of 120% or more
Resist quantity adjustment
Option setting
Destination setting
Toner save mode setting
CE standards setting
Manual copy mode setting
Main motor operation mode setting at warming up
Fuser temperature setting
Fuser temperature setting (in power save)
Correction mode setting
Counter value reset
Maintenance cycle setting
Maintenance cycle display
Counter value display
Counter value reset
Counter value display
Counter value reset
Counter value display
Counter value display
Ref.
page
8-3
8-4
8-5
8-6
8-7
8-7
8-5
8-3
8-7
8-8
8-9
—
Warm-up time display and aging
Omitting warm-up
Intermittent operation aging
Main body sensor operation check
Option tray sensor operation check
Mirror base scan operation check
Optical system sensor operation check
Lens operation check
Lens operation aging
Copy lamp lighting operation
SPF sensor operation check
SPF motor operation check
SPF paper feed clutch operation check
SPF resist clutch operation check
LED lighting check
Heater lamp lighting check
Discharge lamp lighting check
Blank lamp lighting check
Separation pawl auto operation check
Optical system dirt correction reference value display
Optical system dirt correction voltage correction value display
Photoconductor drum rotation time display
Toner motor auto operation check
Toner density sensor operation check/toner density monitor
EnergyStar check
Cancel of troubles other than U2
U2 trouble cancel
8 – 2
8-12
8-10
8-11
8-12
5. Details of simulations
Purpose/kind
Adjustment
Section
Paper feed section
Optical unit
Main code
51
26
45
Sub code
2
8
1
Contents
Description
Used to adjust contact pressure between paper and the main body resist roller or the SPF resist roller. (Amount of paper buckle at the resist roller)
Change the set value when the shift between the paper and the image varies.
(Operation/procedure)
When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display.
Enter the set value with the numeral key and press the print button, and the entered set value will be stored in the main PWB RAM.
The standard set value is 25. (Main body) 25 (SPF)
Tray paper feed mode: Tray (upper) paper feed lamp ON
Manual paper feed mode: Manual paper feed lamp ON
SPF mode: Upper and lower cassette paper feed lamps ON
The set value corresponds to the time interval between when the paper detector (PPD/SPPD) in front of the main body resist roller detects paper and when the transport roller (TRC/SPFC) turns off.
The greater this time interval is, the greater the contact pressure between the paper and the resist roller is.
PPD
( SPPD)
TRC
(SPFC)
@ The time interval can be set. The greater the time interval is, the greater the contact pressure between the paper and the resist roller is. If the contact pressure is too great, a paper jam may occur.
If the contact pressure is too small, variations of image position for the copy paper becomes greater. This must be adjusted according to the paper quality.
Used to adjust the copy magnification ratio in zoom copy.
The lens shift amount in zoom copy is changed to provide suitable magnification ratio.
There is a slight variation in each lens focal distance. If the lenses are shifted in a same amount in zoom copy, suitable magnification ratio may not be obtained. To correct this, therefore, each lens is shifted according to its focal distance.
The lens must be shifted in accordance with its focal distance in zoom copy,
(Operation/Procedure)
When the simulation key operation is performed, the currently set lens number is displayed.
Enter the lens number with the ready lamp ON and press the print button, and the entered number will be stored in the main PWB RAM. The lens number is in proportion to the lens focal distance.
Used to adjust the copy paper lead edge void and the rear edge void amount.
(Operation/procedure)
When the simulation key operation is performed, warming-up operation is performed. After completion of warming up, the currently set void amount is displayed on the COPIES MADE display.
Use the tray select key to select between the lead edge void amount adjustment and the rear edge void amount adjustment mode. The upper tray lamp will change as shown in the table below.
Mode
Paper cassette lamp
Manual Paper feed lamp
Lead edge void amount adjustment mode
Read edge void amount adjustment mode (Paper cassette)
Read edge void amount adjustment mode (Manual Paper feed)
Light
Blink
—
—
—
Blink
Enter the set value with the numeral keys and press the PRINT button, and the set value will be stored.
The standard set value is 50. The void area increases 0.123mm for an increase of the set value by 1.
Ref. page
7-16
7-19
8 – 3
Purpose/kind
Adjustment
Section
Optical unit
Main code
46
Sub code
1
Contents
Description
Used to adjust the copy density (exposure level) and the copy density gradient
(exposure gradient) in each copy mode.
The exposure level is changed by changing the copy lamp applying voltage.
The adjustment points are exposure levels "1" and "5" in each copy mode.
The copy density (exposure level) and the copy density gradient (exposure gradient) can be adjusted arbitrarily.
(Operation/procedure)
When the simulation key operation is performed, the currently set exposure level will be displayed on the COPIES SELECTED display.
Select exposure level "1" or "5" with the copy density adjustment key, and enter the set value with the numeral keys and press the print button. Then the set value is stored.
To select each copy mode, use the copy mode key.
Original table copy mode
SPF copy mode
Copy density adjustment mode
Normal mode Non-toner-save mode
Toner save mode
Photo mode Non-toner-save mode
Auto mode Non-toner-save mode
Toner save mode
Normal mode Non-toner-save mode
Toner save mode
Photo mode Non-toner-save mode
Auto mode Non-toner-save mode
Toner save mode
1
1
1
1
Exposure level
Sim No
5 46-1
5
5
5
1
Set to the
5 copy mode in the original table copy mode.
51-6
Copy density level (exposure level (copy lamp applying voltage) to operation panel density display level)
Great Light MAX 85V (170V)
A
Exposure
Copy density
Copy lamp application voltage
A'
Ref. page
7-26
51 6
Small Dark
MIN 40V (80V)
B'
B
( ): 200V system
1 2 3 4 5
Density display level in the operation panel
In the manual copy mode and the photo copy mode
Set point A (exposure level (copy lamp applying voltage) at copy density level
"1") and point B (exposure level (copy lamp applying voltage) at copy density level "5"), and the exposure gradient (copy density gradient) and the exposure level (copy density level) will be set.
A – B characteristic: A great exposure gradient (copy density gradient).
A
′
– B
′
characteristic: A small exposure gradient (copy density gradient).
Point A and point B can be set arbitrarily.
Used to set the correction value of the copy lamp voltage when the SPF is used.
In copying with the SPF, the exposure level varies more than in the normal copying. To compensate this, the copy lamp voltage is corrected by this simulation.
(Operation/procedure)
When the simulation key operation is performed, the currently set correction value will be displayed on the COPIES SELECTED display.
7-28
8 – 4
Purpose/kind
Adjustment
Section
Optical unit
Main code
47
Sub code
Contents
Description
Ref. page
AE sensor output level
(AE sensor
light receotion
amount)
Used to store the characteristics of the AE sensor and the optical section for the change in the copy lamp applying voltage. The exposure level in the auto copy mode is automatically determined by the stored data and the document density.
This simulation is used to correct the output characteristics of the AE sensor output characteristics, which differ in different machines.
Copy lamp application voltage to AE sensor output characteristics
(When simulation 47 is performed)
7-26
AE sensor output to copy lamp application voltage characteristics (AE copy mode)
Copy lamp application voltage
48 1
2
4
[V] 80(160) 50(100)
Copy lamp application voltage (Exposure amount)
[V]
Dark Light
AE sensor output level (Document density)
(Operation/procedure)
When the simulation key operation is performed, the scanner unit performs initializing and feeds about 10cm and stops.
When the print button is pressed again, the copy lamp applying voltage changes from 80V (160V) to 50V (100V) by the increment of 5V. The AE sensor output characteristics at that time are stored in the main PWB RAM.
At that time, the AE sensor gain is automatically adjusted.
This operation must be performed before the copy density adjustment in the auto copy mode.
Used to adjust the vertical (Machine front to rear) copy magnification ratio.
The adjustment is performed by changing the lens home position arbitrarily.
(Operation/procedure)
When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display.
Enter the adjustment value with the numeric key and press the print button, and the value will be stored in the main PWB RAM.
It is required to make a copy and adjust. However, the rough input value can be obtained from the following formula:
Input value = Current set value + Magnification ratio correction rate
×
10
Used to adjust the horizontal magnification ratio.(Lead to Trail)
The adjustment is performed by changing the scanning speed of the scanner
(mirror motor).
(Operation/procedure)
When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display.
Enter the adjustment value with the numeric key and press the print button, and the value will be stored in the main PWB RAM.
It is required to make a copy and adjust. However, the rough input value can be obtained from the following formula:
Input value = Currently set value + copy magnification ratio x 10
Copy magnification ratio = (Document length – Copy image length)
÷
Document length x 100 [%]
Exposure correction in enlargement copy of 120% or more
Exposure correction voltage in enlargement copy of 120% or more
V = V + N * 0.3V Normal N = 0
V: Reference copy lamp voltage v: Voltage after exposure correction
7-15
7-16
8 – 5
Purpose/kind
Adjustment
Section
Optical unit
Developer unit
Main code
50
Sub code
1
Contents
Description
Used to adjust the copy image position on the copy paper. (Zoom, SPF machine)
(Operation/procedure)
The adjustment is performed by changing the three set values A, B, and C.
The zoom machine has two set values, the SPF machine three, but the normal machine only one.
When the simulation key operation is performed, warming-up is performed and the ready lamp is lighted. Then the currently set value is displayed on the
COPIES SELECTED display. In the case of the zoom machine, there are three set values. Every time when the tray select key is pressed, set values A,
B, and C is displayed in turn. In this case, the pause lamp status allows monitoring the three set values.
Display lamp
Copier tray cassette paper feed lamp BLINKS.
Tray cassette paper feed lamp ON
Copier tray cassette/option tray cassette paper feed lamps ON
Set value
B (Only in the zoom machine).
A
C (Only in the zoom machine)
Set all three set values A, B, and C to "0", make copies at 64% and 129% and measure the shift between the copy paper lead edge and the copy image. Put the measure values into the following formulas to obtain the rough values of A and B.
L1 = Shift between 129% copy paper lead edge and copy image (mm)
L2 = Shift between 64% copy paper lead edge and copy image (mm)
L3 = Shift between SPF mode 10% copy paper lead edge and copy image
(mm) (Only in the SPF model)
A = 8.2423 x (L1 – L2)
It corresponds to the time required for the scanner to reach the document lead edge image position from starting scanning.
It is, in other word, the value used to determine the optical position of the document lead edge reference position of the document table, and must be fitted to the edge section of the document reference plate.
If this value is not proper, the distance between the copy image lead edge and the purpose edge is varied when the copy magnification ration is varied.
B = 16.0568 x L2 – 7.9661 x L1 (Only in the zoom model)
It corresponds to the timer required for the resist roller (RRC) to turn on from when the scanner started scanning and reached the optical document lead edge reference position.
This set value is used to determine the paper feed timing for the image position on the OPC drum, and the relationship between the paper and the image is changed.
C = 8.0906 x L3 (timer value) (Only in the SPF machines)
This set value is used to change the paper feed timing for the scanning start timing (the image position on the OPC drum), and to change the relationship between the paper and the image position.
Ref. page
7-19
SPF resist roller
(SRRC) ON
A
RRC ON
X
Document lead edge position
Mirror unit scan start
A
RRC ON
B
Reaching the document lead edge position
8
25
1
2
In the non zoom model only set value "A"
Used to check the developing bias voltage.
(Operation/procedure)
The developing bias voltage is outputted for 30 sec.
Used for initial setting of toner density when replacing developer.
7-30
4-5
8 – 6
Purpose/kind
Adjustment
Section
Developer unit
Main code
25
Sub code
2
Contents
Description
(Operation/procedure)
After 3 minutes from start of stirring of the DV unit after the main motor rotation, toner density is sampled 16 times during 8 sec, and the average value is stored as the toner density reference value in the RAM.
With this reference value as the threshold value, the toner density is controlled.
Ref. page
4-5
M.M
Setting
Process
SPF unit
Specifications
8
48
26
2
3
4
7
9
3
1
DV.Bias
3mi n
8sec 500msec
(Note) Do not perform this simulation except for when replacing the developer with a new one.
If this simulation is performed in the other case, overtoning or undertoning may occur, resulting in a poor copy quality.
Used to check the voltage of the main charger and the transfer charger in the manual and auto copy mode.
The main charger and the transfer charger unit are turned on for 30 sec in the manual and auto copy mode.
Used to check the voltage of the main charger and the transfer charger in the photo copy mode.
The main charger and the transfer charger unit are turned on for 30 sec in the photo copy mode.
Used to check the voltage of the main charger and the transfer charger in the manual and auto copy mode..
The main charger and the transfer charger unit are turned on for 30 sec in the toner save mode. (manual and auto copy mode)
Used to check the separation charger voltage.
The separation charger unit is turned on for 30 sec.
Used to check the voltage of the main charger, the transfer charger, and the separation charger.
The main charger unit, the transfer charger unit, and the separation charger unit are turned ON for 30 sec.
Used to adjust the horizontal magnification ratio. (When the SPF is used.)
The adjustment is performed by changing the SPF scan speed (SPF motor).
(Operation/procedure)
When the simulation key operation is performed, the currently set value is displayed on the COPIES SELECTED display.
Enter the adjustment value with the numeric key and press the print button, and the value will be stored in the main PWB RAM.
It is required to make a copy and adjust. However, the rough input value can be obtained from the following formula:
Input value = Currently set value + Copy magnification ratio x 10
Copy magnification correction rate = (Document length – Copy image length)
÷
Document length x 100 [%]
Used to set options.
(Operation/procedure)
When the simulation key operation is performed, the currently set machine number is displayed on the COPIES SELECTED display.
Enter the code number corresponding to the machine conditions and press the print button, and the value will be set.
Grid voltage
–750
±
10V
Grid voltage
–459.9
±
10V
Grid voltage
–634.4
±
10V
7-30
7-18
Code No.
01
04
20
SPF
Zooming machine
Machine installed
Personal counter
Add each code of an installed machine and enter the total number.
8 – 7
Purpose/kind
Setting
Section
Specifications
Paper feed unit
Fuser unit
Main code
26
Sub code
6
Contents
Description
Used to set the destination.
(Operation/procedure)
When the simulation key operation is performed, the code number of the currently set destination is displayed.
Enter the code number corresponding to the desired destination and press the print button, and the specifications for the destination will be set.
Code No.
00
01
02
03
04
05
06
07
08
Japan
SEC
SECL
SEEG
SUK
SCA
Other inch series
Other AB series
LAG
Destination
Ref. page
18
26
26
43
30
12
13
1
Toner save mode specifications
0: non TS
1: TS (Japan and SUK only)
Setting for CE standards
After pressing the print switch, the currently set code is displayed. Enter the following set code with the 10-key pad and press the print switch.
0: non CE
1: CE (Set to 1 for the areas of 200V/50Hz.
1: CE ( Set to 0 for the areas of 100V/60Hz.)
Used to set the manual paper feed mode. (SF-2314 only)
There are two operation modes: auto and manual. Either of the two can be set.
(Operation/procedure)
When the simulation key operation is performed, the code number of the currently set operation mode is displayed.
Enter the code number corresponding to the desired operation mode and press the print button, and the operation mode will be set.
Code number Operation mode
1
0
Manual
Auto
Operation
When the print button is pressed, copying is started.
When copy paper is set, coping is automatically started.
Used to set the operation mode of the main motor in warming up.
There are two operation modes: auto and manual. Either of the two can be set.
(Operation/procedure)
When the simulation key operation is performed, the code number of the currently set operation mode is displayed.
Enter the code number corresponding to the desired operation mode and press the print button, and the operation mode will be set.
Code number Operation mode
0
1
Normal mode
Long mode
Operation
The main motor rotates until the process cleaning is completed.
The main motor keeps rotating until completion of warming up.
Used to set the fusing temperature.
(Operation/procedure)
When the simulation key operation is performed, the lower two digits of the currently set temperature is displayed on the COPIES SELECTED display.
(Example: 75 ——— 175 ˚C)
Pressing the paper select key under that state allows selection of fusing temperature by the increment of 5 ˚C. To set the temperature, press the print button. (Standard set value: 85 ——— 185˚C)
8 – 8
Purpose/kind
Setting
Counter
Section
Fuser unit
Process
Copy count
Maintenance
Drum count
Developer count
Main code
43
44
22
20
21
24
22
42
Sub code
2
1
1
2
1
1
7
12
1
Contents
Description
Used to set the fusing temperature in the power save mode.
(Operation/procedure)
When the simulation key operation is performed, the lower two digits of the currently set temperature is displayed on the COPIES SELECTED display.
Pressing the paper select key under that state allows selection of fusing temperature by the increment of 5 ˚C. To set the temperature, press the print button.
* 00
→
05
→
10
→
85
→
90
→
95 * : Standard set value
Used to set the correction modes.
(Operation/procedure)
When the simulation key operation is performed, the code number of the currently set mode is displayed on the COPIES SELECTED display. Enter the code number corresponding to the desired correction mode and press the print button, and the mode will be set.
Code
2
4
10
Correction mode
Optical system dirt correction enable
Photoconductor drum membrane wear correction enable
Toner correction control
Set the total of codes of above modes.
Factory setting is "16."
Used to check the maintenance count value.
(Operation/procedure)
The maintenance count value is displayed dividedly by two digits three times on the COPIES SELECTED display.
There is a pause between any two displays. After the longest pause, the top two digits are displayed.
Used to check the set maintenance cycle (maintenance preset counter).
Used to reset the maintenance counter.
Used to set the maintenance cycle.
(Operation/procedure)
After performing the simulation key operation, enter the code number corresponding to the desired maintenance cycle listed below.
Code
No.
1
2
3
4
Maintenance lamp ON cycle
Every 10,000 copies
Every 20,000 copies
Every 40,000 copies
Lamp not ON
Photoconductor lamp ON cycle
Every 40,000 copies
Every 40,000 copies
Every 40,000 copies
Lamp not ON
Set to "2" when shipping.
Drum count data is reset.
Used to check the drum counter value inside the installed OPC drum unit.
Used to reset the developer count value.
Ref. page
22 6 Used to display the developer count value.
8 – 9
Purpose/kind
Operation check
Section
Paper feed unit
Main code
30
Optical unit 1
Sub code
1
Contents
Description
Used to check the operations of the sensors and detectors in the paper feed section, and their related circuits.
The operations of the sensors and the detector in the paper feed section can be monitored by the lamps on the operation panel.
(Operation/procedure)
ON/OFF of the sensors and detectors in the paper feed section can be monitored with the lamps on the operation panel.
Sensor name
Paper size detector (PWD)
Resist detector (PPD)
Paper exit detector (POD)
Tray open/close detector (PED1)
Manual paper feed detector (PID)
Display lamp
Toner empty lamp
Jam lamp
OPC drum lamp
No.1 paper feed cassette lamp
Manual paper feed lamp
Ref. page
3-4
2 Used to check the operations of the sensors and detectors in the option tray and their related circuits.
The operations of the sensors and detectors in the option tray can be monitored with the display lamps on the operation panel.
(Operation/procedure)
ON/OFF of the sensors and detectors in the option tray can be monitored with the lamps on the operation panel.
The operations of the sensors and detectors in the option tray can be monitored with the lamps on the operation panel. Used to check the operations of the sensors.
Sensor name Display lamp
Option tray cover open/close detector (CSDSW) Toner empty lamp
Option tray paper feed sensor (CSPPD) Jam lamp
Option tray open/close detector (CPED2)
Option tray detector (OCSD)
Upper tray lamp
Lower tray lamp
Mult manual paper feed unit defects
Single manual paper feed unit defects
SPF Jam lamp
SPF lamp
1
2
3
Used to check the operation of the scanner unit and its control circuit.
(Operation/procedure)
When the print button is pressed, scanning is performed at the speed corresponding to the currently set copy magnification ratio.
The copy magnification ratio can be set arbitrarily.
Used to check the operations of the sensors and detectors in the optical unit and their related circuits.
(Operation/procedure)
ON/OFF of the sensors and detectors in the optical unit can be monitored with the lamps on the operation panel.
Sensor name Display lamp
Mirror home position sensor (MHPS) OPC drum lamp
Lens home position sensor (LHPS) Toner empty lamp
Used to check the operation of the lens unit and its control circuit.
(Operation/procedure)
The lens unit moves to each position of the following copy magnification ratios continuously, and stops at each position for about 0.5 sec.
The copy magnification ratio corresponding to each stop position of the lens is displayed on the operation panel.
10%
→
Reduction 1
→
Reduction 2
→
Enlargement 1
→
Enlargement 2
→
100%
3-4
8 – 10
Purpose/kind
Operation check
Section
Optical unit
SPF unit
Operation unit
Fuser unit
Process
Operation check
Main code
1
Sub code
4
Contents
Description
Used to check the operation of the optical unit and its control circuit.
5
2
5
5
5
6
3
2
3
4
5
1
2
4
5
2
(Operation/procedure)
The operation of simulation 1-3 is repeatedly performed.
Used to check the operation of the copy lamp and its control circuit.
(Operation/procedure)
The copy lamp lights up for first one sec at full power, and lights for 4 sec at the currently set exposer level (copy density).
EXP1~5 voltage
Full power
CLV
1sec 4sec
Used to check the operation of the sensors and detectors in the SPF unit.
(Operation/procedure)
ON/OFF of the sensors and detectors in the SPF unit can be monitored with the lamps on the operation panel.
Sensor name
Document detector (SPFD)
Display lamp
Toner empty lamp
SPF resist sensor (SPPD)
Document exit sensor (SPOD)
Jam lamp
OPC drum lamp
SPF open/close detector (SDSW) SPF jam lamp
Used to check the operation of the SPF drive motor and its control circuit.
(Operation/procedure)
The SPF drive motor rotates for 10 sec at the speed corresponding to the currently set copy magnification ratio.
Used to check the operation of the SPF paper feed clutch and its control circuit.
(Operation/procedure)
The SPF paper feed clutch turns on for 10 sec.
Used to check the operation of the SPF resist clutch and its control circuit.
(Operation/procedure)
The SPF resist clutch turns on for 10 sec.
Used to check the operations of the lamps on the operations panel and their control circuits.
(Operation/procedure)
All display lamps on the operation panel turns on for 5 sec.
Used to check the operation of the heater lamp and its control circuit.
(Operation/procedure)
The heater lamp turns on for 500ms, and off for 500ms five times repeatedly.
Used to check the operation of the discharge lamp and its control circuit.
(Operation/procedure)
The discharge lamp lights up for 30 sec.
Used to check the operation of the blank lamp and its control circuit.
(Operation/procedure)
The blank lamps lights up sequentially from the rear frame side to the front frame side, and all the lamps light up for 10 sec.
Used to check the operation of the OPC separation pawl solenoid and its control circuit.
(Operation/procedure)
The OPC separation pawl solenoid repeats 0.5 sec ON and 0.5 sec OFF twenty times.
Ref. page
3-4
8 – 11
Purpose/kind
Operation check
Operation check
Trouble code resets
Section
Process
Developer unit
Other
Gereral
(Aging mode)
Main code
44
10
25
6
7
14
16
Sub code
2
3
4
1
1
1
4
6
Contents
Description
Used to display the reference value of the optical system dirt correction.
This value affects the process correction system. For details, refer to the descriptions on the process correction system.
Used to display the reference value of the optical system dirt correction.
(Operation/procedure)
When the simulation key operation is performed, the current correction amount is displayed in hexadecimal number on the COPIES SELECTED display.
The decimal number converted from the hexadecimal number shows the actually corrected copy lamp voltage.
Example --- 1d] : 2.9V correction
Used to display rotating time of the photoconductor drum.
This value affects the process correction system. For details, refer to the descriptions on the process correction system.
(Operation/procedure)
When the simulation key operation is performed, the current rotating time of the photoconductor drum is displayed in the unit of minute on the COPIES
SELECTED display.
Used to check the operation of the toner motor and its control circuit.
(Operation/procedure)
The toner motor turns on for 30 sec.
Used to check the operation of the sections other than the optical unit and to check the operation of the toner density sensor.
(Operation/procedure)
The main motor rotates and the units connected to the main motor operate accordingly. The output level of the toner density sensor is displayed on the
COPIES SELECTED display.
Used to check that the machine conforms to EnergyStar or not.
This simulation is effective only in Japan, SEC, and SECL.
Warm-up time display and aging
When this simulation is executed, warm-up is started, and the warm-up time is counted every second and displayed on the copy quantity display. At completion of warm-up, counting is stopped and RPL is lighted.
Press CA key to clear the warm-up time display, set the desired copy quantity and press the PRINT button, and copying will be performed to make the set quantity of copies.
Omitting warm-up
When this simulation is executed, the machine goes into the ready state (RPL on).
Intermittent aging
When this simulation is executed, warm-up is started.
After completion of warm-up, set the copy quantity and press the PRINT button, and copying will be performed to make the set quantity of copies.
Used to cancel troubles other than self diag U2 trouble code.
(Operation/procedure)
After cancellation of the trouble code, the simulation is also automatically cancelled.
Used to cancel the self diag U2 trouble code.
(Operation/procedure)
After cancellation of the trouble code, the simulation is also automatically cancelled.
Ref. page
5-5
5-13
5-13
5-12
8 – 12
6. User simulation
(1) Energy saving function
There are two specifications of energy saving: International Energy-
Star specifications, and the specifications for the other areas where it is not required. It can be selected with the serviceman simulation.
(Only the software specification can be selected. Since the power switch and machine mechanism are different, the machine of the
International EnergyStar specifications cannot be changed into the machine of the other specifications.)
To save the power consumption, the energy saving function operates when a certain time is passed under certain conditions.
There are following two modes of the energy saving.
[International EnergyStar specifications]
A) Preheat mode (The machine enters this mode after passing a certain time from completion of the final operation.)
• The fusing section temperature is lower than the normal ready state.
• The fan speed is reduced. (Patent avoidance)
• The energy-saving lamp is turned on and the other display lamps are also turned on. (Including the ready lamp.)
• Preheat is terminated when any operation is made (key input, cassette loading, original setting, or other operation which the machine can detect). The energy-saving lamp blinks. At the same time, the fusing section temperature rises to the copy ready level within 10 sec.
B) Auto off mode (The energy-saving effect is greater than the preheat mode. The machine enters this mode after passing a certain time from completion of copying. When, however, the machine is temporarily stopped by paper jam, paper empty, toner empty (with the toner supply lamp ON), etc., the machine does not enter this mode.)
• The power switch is turned off to stop power supply to the machine.
• All the LED lamps on the operation panel are turned off.
• When the power switch is turned on, the auto off mode is terminated and the energy-saving lamp blinks.
At that same time, all the display lamps including the ready lamp are turned on and the fusing section temperature rises to allow copying.
•
The time from completion of the auto off mode to turning off of the energy-saving lamp after returning to the ready state is the same as the max. warm-up time after turning on the power.
@ Time required to enter the preheat mode or auto off mode and cancellation of the mode can be set by the user program. (For details, refer to the descriptions on the user program.)
For cancellation of the auto off mode, however, the significance of
International EnergyStar is described on the Operation manual to guide the user not to cancel the function as far as possible.
Machine state
Operation panel
Energy-saving LED
Ready lamp
A. Warmup
ON
F
Blink
ON
F
ON
B. Ready
ON
F
OFF
D
ON
F
ON
C. Copying
ON
F
OFF
D
OFF
D
ON
(
Energy-saving mode
D. Preheating
@ 1)
ON
F
ON
F
ON
F
ON
E.Auto off mode
OFF
D
OFF
D
OFF
D
OFF Power switch
@ 1: When the copy button is pressed during preheating, the machine enters the state of "G. Reserved."
@ 2: To reset from the auto off mode, press the power switch.
[Specifications which does not conform to International
EnergyStar]
A) Preheat mode (The machine enters this mode after passing a certain time from completion of the final operation.)
•
The fusing section temperature is lower than the normal ready state.
•
The fan speed is reduced. (Patent avoidance)
• The energy-saving lamp is turned on and the other display lamps are also turned on. (Including the ready lamp.)
• Preheat is terminated when any operation is made (key input, cassette loading, original setting, or other operation which the machine can detect). The energy-saving lamp blinks. At the same time, the fusing section temperature rises to the copy ready level within 10 sec.
Auto start from D, E
F. Resetting
G. Reversed
(Reset)
ON
F
ON
F
Blink Blink
ON
F
ON
OFF
D
ON
B) Auto power shut off mode (The energy-saving effect is greater than the preheat mode. The machine enters this mode after passing a certain time from completion of copying. When, however, the machine is temporarily stopped by paper jam, paper empty, toner empty (with the toner supply lamp ON), etc., the machine does not enter this mode.)
• Power supply is stopped only to the fusing section.
• The fan speed is reduced. (Patent avoidance)
• The energy-saving lamp is turned on, and the other lamps are turned off.
• When the print button is pressed, the auto power shut off is terminated and the energy-saving lamp blinks. At the same time, the fusing section temperature rises to the copy ready level within 10 sec.
•
The time from completion of the auto off mode to turning off of the energy-saving lamp after returning to the ready state is the same as the max. warm-up time after turning on the power.
@ Time required to enter the preheat mode or auto off mode and cancellation of the mode can be set by the user program. (For details, refer to the descriptions on the user program.)
8 – 13
Machine state
Operation panel
Energy-saving LED
Ready lamp
A. Warmup
ON
F
Blink
ON
F
ON
B. Ready
ON
F
OFF
D
ON
F
ON
C. Copying
ON
F
OFF
D
OFF
D
ON
(
Energy-saving mode
D. Preheating
@ 1)
ON
F
ON
F
ON
F
ON
E.Auto power shut off mode
OFF
D
ON
F
OFF
D
ON Power switch
@ 1: When the copy button is pressed during preheating, the machine enters the state of "G. Reserved."
Auto start function
Even during warming up or during resetting after completion of energy-saving mode, copy condition can be set and copy reservation can be accepted.
When reservation is made, copying is started when the fusing temperature of the machine reaches the specified level.
When copy reservation is made, the copy conditions cannot be changed until the reservation is canceled with the clear key.
Auto start from D, E
F. Resetting
G. Reversed
(Reset)
ON
F
ON
F
Blink Blink
ON
F
ON
OFF
D
ON
(2) User simulation prcedure
Simulation procedure State
1. Press the paper feed section select key for more than 5 sec.
2. Enter a code number with 10 key.
User simulation input allowed.
Simulation code selection.
3. Press the COPY button.
4. Enter the selection code with 10 key.
5. Press the COPY button.
Simulation code determined.
Simulation code menu selection.
Simulation code menu determined.
6. Press the paper feed section select key.
Escape from user simulation.
* Press the clear key.
• When this key is pressed during user simulation selection, the mode returns to state 1 (user simulation input allowed.)
(Use this key to correct mistyping of input.)
• After completion of program setting, when this key is pressed, the mode the following program input can be made.
Paper jam/ developer replacement/ toner supply warning LED
Blink
Blink
Blink
Blink
Blink
OFF
Copy quantity display
1
1 1
1 2
1 2
Returns to copy quantity display.
Blink
(
Print LED
OFF
OFF
ON
ON
ON
OFF
—
8 – 14
(3) User program code table
[ES conforming area]
Program
Auto clear passing time setting
Preheat mode setting and passing time setting
Auto off mode passing time setting
P code
1
2
3
@
Selection code:
Set content
0
: NO
1
: 30 sec.
2
: 60 sec.
3
: 90 sec.
4
: 120 sec.
0
: NO
1
: 30 sec.
2
: 60 sec.
3
: 90 sec.
4
: 120 sec.
1
: 30 min.
2
: 60 min.
3
: 90 min.
4
: 120 min.
5
: 240 min.
Stream feeding mode setting and cancel (Only models with SPF)
Auto off mode setting, cancel
4
5
0
: NO
1
: YES
0
: NO
1
: YES
Factory setting
2
: 60 sec.
3
: 90 sec.
1
: 30 min.
0
: NO
1
: YES
@ When auto off mode passing time setting (operation with P code
[3]) is made under the state where the auto off mode is canceled
("[0]: NO" is selected with P code [5]), the machine enters the auto off mode set conditions without operation with program [5].
[ES conforming area]
Program
Auto clear passing time setting
Preheat mode setting and passing time setting
P code
1
2
Selection code:
Set content
0
: NO
1
: 30 sec.
2
: 60 sec.
3
: 90 sec.
4
: 120 sec.
0
: NO
1
: 30 sec.
2
: 60 sec.
3
: 90 sec.
4
: 120 sec.
Factory setting
2
: 60 sec.
0
: NO
Auto off mode passing time setting
3
1
: 30 min.
2
: 60 min.
3
: 90 min.
4
: 120 min.
5
: 240 min.
0
: NO
Since P code
[5] is set to "[0]:
NO," this setting is set to
[0] though there is no selection code specified.
Stream feeding mode setting and cancel (Only models with SPF)
Auto power shut off mode setting, cancel
4
5
0
: NO
1
: YES
0
: NO
1
: YES
0
: NO
0
: NO
@ When auto power shut off mode passing time setting (operation with P code [3]) is made under the state where the auto power shut off mode is canceled ("[0]: NO" is selected with P code [5]), the machine enters the auto power shut off mode set conditions without operation with program [5].
8 – 15
[9] SELF DIAG
1. Summary/purpose
This model has the self diag function for the following purposes:
1) When a trouble occurs in the machine, the machine detects the trouble and displays the trouble content on the copy quantity display to alert the customer and the serviceman.
2) When any abnormality is detected, the power supply line is cut off immediately for safety and to protect the machine from damage.
2. Operation
The self diag content is displayed in the following procedure.
A trouble occurs
The abnormalality is detected by sensors and detectors
The main trouble code is displayed on the copy quantity display
Is there sub code?
NO
YES
Press the print key
The sub trouble code is displayed on the copy quantity display
Check the trouble position
(Use the suitable simulation)
Repair
Turn off/on the power or cancel the self diag with simulation 14 or 16
3. Clearing the self diag display
After repairing the trouble section, clear the self diag display according to the table below:
Clearing the self diag display
Self diag display Display clearing procedure
L1, L3, L4, L5, L8 Turn off/on the power.
H3, H4 Execute simulation 14.
U2
CH, PC
Execute simulation 16.
When the trouble is cancelled,, the display is cleared.
9 – 1
4. Self diag contents
Error code
Main Sub
L1 0
L3
L4
0
1
Item
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Content
Description
Scanner feed trouble
1) 86 pulses (45 mm) of the scanner motor drive pulse have been outputted after the scanner unit started scanning, but the scanner home position sensor (MHPS) does not turn off.
2) The scanner unit is not at its home position (MHPS does not turn on) when the scanner unit starts scanning.
3) The scanner home position sensor (MHPS) does not turn on when the scanner performs the initial operation.
1) Scanner motor trouble
2) Scanner motor control circuit trouble
3) Scanner motor rotation sensor and its control circuit trouble
4) Scanner home position sensor (MHPS)and its input circuit trouble (main control circuit trouble)
5) Scanner unit drive mechanism trouble
6) An overload to the drive section
Use simulations 1-1 and 1-2 to check the following:
A. Check the mirror motor control circuit and its peripheral sections.
1) The scanner unit operates normally.
2) The scanner home position sensor ((MHPS) operates normally and its output signal is inputted to the main control PWB.
3) The scanner motor drive signal is outputted.
4) The scanner motor rotation sensor signal is inputted to the control circuit.
B. Check the scanner unit drive mechanism.
1) Drive wire
2) Pulley
3) Gear
After repair, turn off/on the power switch.
Scanner return trouble
1) The scanner motor drive pulses required for the scanner unit to return are shifted more than 50 pulses for the drive pulses required for feeding. (The corresponding distance is
10mm or more.)
2) The scanner motor drive pulses required for the scanner unit to return are within 50 pulses for the drive pulses required to feed.
3) The scanner unit does not return. Or through it returns, the scanner unit does not return to its home position (the MHPS does not turn on).
(Though the scanner motor drive pulses required to return are 50 pulses greater than the drive pulses required for the scanner unit to feed, the scanner unit is not in the home position (the MHPS does not turn on).
4) After the scanner unit returns, the MHPS does not turn on.
1) Scanner motor trouble
2) Scanner motor control circuit trouble
3) Scanner motor rotation sensor and its peripheral sections trouble
4) Scanner home position sensor (MHPS) and its input circuit trouble
5) Scanner unit drive mechanism trouble
6) Overload at the scanner motor drive section
Use simulation 1-1 and 1-2 to check the following:
A. Check the mirror motor control circuit and its peripheral.
1) The scanner unit operates normally.
2) The scanner home position sensor (MHPS) operates normally and its output signal is inputted to the main control circuit.
3) The scanner motor drive signal is inputted.
4) The scanner motor rotation sensor signal is inputted to the control circuit.
B. Check the scanner unit drive mechanism.
1) Drive wire
2) Pulley
3) Gear
After repair, turn off/on the power switch.
Main motor lock trouble
Ref. page
8-10
8-10
9 – 2
Error code
Main Sub
L4 1
L5
L8
2
1
3
Item
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Content
Detail
Cause
Description
The rotary encoder signal cannot be detected for more than 50ms during delivery of the main motor On signal output.
1) Main moor trouble
2) Main control circuit trouble
3) Main motor rotation sensor and its input circuit (main control circuit) trouble
4) Main motor drive mechanism trouble
5) An overload on the main motor drive section
Check the following items:
A. Check the main motor control circuit and its peripheral sections.
1) Main motor drive signal is inputted.
2) The main motor rotation sensor signal is inputted to the control circuit.
B. Check the main motor drive mechanism.
1) Drive wire
2) Pulley
3) Gear
After repair, turn off/on the power switch.
Lens drive motor trouble
1) During the initial operation, the lens does not move from the reduction copy position to the enlarged copy position. Or the lens home position sensor (LHPS) does not turn on even though the lens moves (130mm/lens motor drive pulse output).
2) During the initial operation, the lens does not move to the enlargement copy position.
Or the lens moves (70mm/ 50 pulses of lens motor drive pulse are outputted) but the lens home position sensor (LHPS) does not turn off.
3) When the lens moves from the reduction coy position to the enlargement copy position, the specified number of pulses required for the lens home position sensor (LHPS) to move from ON position to OFF position is shifted by 20 pulses (4mm) or more.
4) AT the completion of lens movement, the lens home position sensor is not ON when in enlargement copying, or not OFF when in reduction copying.
1) Lens motor trouble
2) Main control circuit trouble
3) Lens motor rotation sensor and its input circuit (main control PWB) trouble
4) Lens motor drive mechanism trouble
5) An overload on lens motor drive mechanism
Use simulations 1-3 or 1-4 to check the following items:
A. Check the lens motor control circuit and its peripheral sections.
1) The lens motor drive signal is outputted.
2) Lens motor rotation sensor signal is inputted to the control circuit.
B. Check the lens motor drive mechanism.
1) Drive wire
2) Pulley
3) Gear
After repair, turn off/on the power switch.
Power frequency abnormality
The power frequency is shifted from the specified level by 5% or more for 10 cycles or more, or the FW signal cannot be detected for more than 5 sec.
1) FW is not outputted or the output waveform is abnormal.
2) Power circuit trouble (AC power unit/DC power unit)
3) FW input circuit trouble (main control circuit)
4) AC power trouble (waveform/voltage)
Check the waveforms of the following units with an oscilloscope.
1) FW signal waveform in the DC power unit
2) FW signal waveform in the main control circuit
3) AC power line
After repair, turn OFF/ON the power switch.
During execution of simulation 47, the AE sensor output does not change according to change in the copy lamp voltage.
AE sensor trouble
1) AE sensor or its input circuit (main control PWB) trouble
2) Copy lamp control circuit trouble (copy lamp control signal abnormality)
3) A white paper is not set on the document table or the document table or the document cover is dirty.
Ref. page
8-10
8-11
8-5
9 – 3
Error code
Main Sub
L8 3
Item
Remedy
H2
H3
H4
U2
0
0
0
1
4
Content
Detail
Cause
Remedy
Content
Detail
CAuse
Remedy
Content
Detail
Cause
Remedy
Content
Cause
Remedy
Content
Detail
Cause
Description
Check the following items:
1) AE sensor or its input circuit
2) Copy lamp control circuit (copy lamp control signal)
After repair, turn off/on the power switch.
Fuser section thermistor trouble
The voltage across the thermistor input circuit remains 4.6V or more for 1500 ms or more.
1) Thermistor and its input circuit (main control PWB) trouble (disconnection)
Check the thermistor and its input circuit (main control circuit) for disconnection.
AFter repair, used simulations 14 to cancel the self diag.
Abnormally high temperature in the fuse section
The voltage across the thermistor input circuit remains 1.39V or less for 1500 ms or more.
(A high temperature above 241 C is detected.)
1) Thermistor and its input circuit (main control PWB) trouble (disconnection)
2) Heater lamp control signal and its control circuit trouble
(The heater lamp remains ON.)
Check the following items:
1) Thermistor and its input circuit (main control PWB) disconnection
2) Heater lamp control signal and its control circuit
After repair, use simulations 14 to cancel the self diag.
An abnormally high temperature in the fuse section
1) The voltage across the thermistor input circuit remain 3.39V or more for 1500ms. (A temperature below 148˚C is detected.)
2) The temperature does not reach the specified temperature within 60 sec after starting warming up.
1) Thermistor and its input circuit (main control circuit) trouble (disconnection)
2) Heater lamp trouble
3) Heater lamp control signal and its control circuit trouble (The heater lamp remains ON.)
Check the following items:
1) Check the thermistor and its input circuit (main control PWB) for disconnection or shot.
2) Heater lamp control signal and its control circuit
3) Heater lamp
After repair, use simulations 14 to cancel the self diag.
In the main PWB EEPROM data sum check, the data do not correspond to the CPU data.
1) Main PWB EEPROM trouble
2) Main control circuit trouble
3) Communication line trouble between the main PWB EEPROM and the CPU
4) CPU trouble
5) Data bus line trouble
Check the following items:
1) main PWB EEPROM
2) Memory control circuit
3) Communication line between main PWB EEPROM and CPU
4) CPU
5) Data bus line
After repair, use simulations 16 to cancel the self diag.
When the power is turned on, data in the main PWB EEPROM are transferred to the CPU to perform sum check. The operation can be checked at that time. memory line communication trouble
1) In access to the main PWB EEPROM, the respond command ACK is not inputted to the CPU.
2) When writing data into the main PWB EEPROM, the write enable signal is not inputted to the CPU for 11ms or more.
1) Main EEPROM RAM trouble
2) Memory control circuit trouble
3) Communication line trouble between main PWB and CPU
4) CPU trouble
5) Data bus line trouble
Ref. page
8-11
8-11
8-12
8-12
9 – 4
Error code
Main Sub
U2 4
Item
Remedy
U5
EE
CH
5 Content
Detail
Cause
Remedy
EU Content
Detail
Cause
Remedy
EL
Light
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Light Content
Detail
Cause
Remedy
Description
Check the following items:
1) Main PWB EEPROM
2) Memory control circuit
3) Communication line between main PWB EEPROM and CPU
4) CPU
5) Data bus line
After repair, use simulation 16 to cancel the self diag
When the power is turned on, data communication is performed with the main PWB
EEPROM and the CPU. The operation can be checked at that time.
Abnormally high temperature on the original glass when using the SPF.
The thermistor detects 55˚C or above.
1) Thermistor and input circuit (main control PWB) trouble (disconnection)
2) Copy lamp control signal and control circuit trouble
(Copy lamp remains ON.)
Check the following items.
1) Thermistor and input circuit (main control PWB) disconnection
2) Copy lamp control signal and control circuit
Turn OFF/ON the power to cancel the diagnostics.
Toner density initial setting trouble (undertoner)
When setting the toner density initial level with simulation 25-2, the toner density sensor output is below the specified voltage (1.53V).
1) Toner sensor trouble
2) Toner sensor input circuit trouble (main control PWB)
Use simulations 25-2 to check the following items:
1) Toner sensor
2) Toner sensor input circuit
After repair, use simulations 14 to cancel the self diag.
Toner density initial setting trouble (overtoner)
When setting the toner density initial level with simulation 25-2, the toner density sensor output is above the specified voltage (3.49V).
1) Toner sensor trouble
2) Toner sensor input circuit trouble (main control circuit)
3) Toner motor and its control circuit trouble
Use simulations 25-2 to check the following items:
1) Toner sensor
2) Toner sensor input circuit
3) Toner motor and its control circuit
After repair, use simulations 14 to cancel the self diag.
Paper feed section cover open
1) The paper feed section cover open/close detector (CSDSD) and its input circuit remains Low (0V).
1) Paper feed section cover open/close mechanism trouble
2) Paper feed section cover open/close detector signal (CSDSW) and its control circuit trouble
3) Paper feed section cover open/close detector (CSDSW) trouble check the following items:
1) Paper feed section cover open/close mechanism
2) Paper feed section cover open/close detector signal (CSDSW) and its input circuit
3) Paper feed section cover open/close detector (CSDSW)
Manual paper feed unit installation trouble (MFD0, MFD1)
1) The manual paper feed unit signal (CSDSW) and its control circuit remains MFD0 level and MFD1 level.
1) The manual paper feed unit signal (MFD1) line is not connected or disconnection in the line. (The manual paper feed unit is not installed.)
Check the following item:
1) Manual paper feed unit signal (MFD1) line
Ref. page
8-12
8-6
8-6
8-10
8-10
9 – 5
Error code
Main Sub
PC
Paper empty
Toner empty
Toner empty
JAM
Light
Blink
Item
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Content
Detail
Cause
Remedy
Description
Personal counter installation trouble
The personal counter is not installed in the personal counter mode.
The input circuit of the personal counter installation detect signal does not turn HIGH level.
1) Personal counter trouble
2) Personal counter installation detecting signal input circuit (main PWB) trouble
3) Personal counter wiring
Check the following items:
1) Personal counter
2) Personal counter installation detecting signal input circuit (main PWB)
3) Personal counter wiring
Paper tray open/no copy paper
1) The selected paper tray is removed.
2) There is no paper in the selected paper tray.
1) The selected paper tray is removed.
2) There is no paper in the selected paper tray.
3) The selected paper tray detector (CPED1, CPED2) and its input circuit (main PWB) trouble
4) The selected paper tray paper empty detector (CPED1/CPED2) and its input circuit
(main PWB)
Check the following items:
1) The selected paper tray paper empty detector (CPED1/CPED2) and its input circuit
(main PWB)
Toner concentration fall
1) No toner in the toner box
2) Toner supply trouble
1) No toner in the toner box
2) Toner motor and its control circuit (main PWB) trouble
3) Toner supply section clogging
4) Toner sensor and its input circuit (main PWB) trouble
Use simulation 25-2 to check the following items:
1) Toner box
2) Toner motor and its control circuit (main PWB)
3) Toner supply section
4) Toner sensor and its control circuit (main PWB)
Toner concentration fall (Copy stop)
1) No toner in the toner box
2) Toner density falls below the specified level.
1) No toner in the toner box
2) Toner motor and its control circuit (main PWB) trouble
3) Toner supply section clogging
4) Toner sensor and its input circuit (main PWB) trouble
Check the following items:
1) Toner box
2) Toner motor nd its control circuit (main PWB)
3) Toner supply section
4) Toner sensor and its input circuit (main PWB)
Copy paper misfeed trouble
1) Misfeed of copy paper occurs in the copy paper feed section, the transfer section, the transport section, or the fuse section.
1) The copy paper detector in each section remains ON or OFF.
2) The copy paper detector in each section and its input circuit (main PWB) trouble
3) The copy paper feed and transport clutches in each section and its control circuit (main
PWB) trouble
4) Paper feed roller and transport roller trouble
5) Copy paper fed and transport drive mechanism trouble (motor, gear, etc.)
6) Insufficient or excessive contact pressure between copy paper and the resist roller because of improper setting with simulation 51-2.
Check the following items:
1) Copy paper detector in each section
2) Copy paper detector and its input circuit (main PWB) in each section
3) Copy paper feed and transport clutches and their control circuit (main PWB) trouble
4) Paper feed roller, transport roller
5) Copy paper feed and transport drive mechanisms trouble (motor, gear, etc.)
6) Set value of simulation 51-2
9 – 6
Ref. page
8-6
8-12
8-3
Error code
Main Sub
SPFJAM
Item
Content
Detail
Cause
Remedy
Description
Document misfeed trouble
1) When the document is in the SPF section, a misfeed of copy paper occurs.
1) The document detector in he SPF section remains ON or OFF.
2) The document detector in the SPF section and its input circuit (main PWB) trouble
3) The paper feed and transport clutches in the SPF section and its control circuit (main
PWB) trouble
4) SPF section paper feed roller and transport roller trouble
5) Document paper feed section and its transport drive system trouble (motor, gear, etc.)
6) Insufficient or excessive contact pressure between the SPF resist roller and the document because of improper setting with simulation 51-7
Use simulation 2 to check the following items:
1) SPF section document detector
2) SPF section document detector and its input circuit (main PWB)
3) SPF section paper feed and transport clutches and their control circuit (main PWB)
4) SPF section paper feed roller, transport roller
5) Document paper feed and transport drive system (motor, gear, etc.)
6) Set value of simulation 51-7
Ref. page
8-11
5. Conditions for the JAM display
1) Paper feed section
(1) The JAM lamp lights up if 9 PPD does not turn on within about
1.5 sec after P CPFC1 ON.
(2) The JAM lamp lights up if H CSPPD does not turn on within about 1.1 sec after Q CPFC2 ON.
(3) The JAM lamp lights up if 9 PPD does not turn on within about
1.1 sec after H CSPPD ON.
(4) The Jam lamp lights up if 9 PPD does not turn on within about
1.0 sec after R MPFC ON.
4 5 6 7
2
3
1
9
8
11
10
2) Transport section
(1) The JAM lamp lights up if 9 PPD does not turn off within about
3.2 sec after M RRC ON.
(2) The JAM lamp lights up if 1 POD does not turn off within about
2.8 sec after 9 PPD ON.
(3) The JAM lamp lights up if 1 POD does not turn on within about
2.4 sec after M RRC ON.
12 13 14
15
19
16
18
17
9 – 7
[10] SERVICING AT MEMORY
TROUBLE AND MAIN
CONTROL PWB REPLACEMENT
1. General
The control PWB stores various set values, adjustment values, and counter values.
These data are very important and used for operating the machine properly and for service control.
In the following cases, therefore, various set values, adjustment values and counter values must be set again.
@ When a memory trouble (U2) occurs.
@ When the EEPROM in the main control PWB is replaced.
@ When the main control PWB is replaced.
When "U2" trouble occurs, the data cannot be relied upon, and they must be set properly.
2. Purpose
The purpose is to reset the memory data to operate the machine properly.
Use the attached service memory data recording sheet to memorize the newest data when servicing in order to cope with the above situations. This improves efficiency in servicing and realizes quick recovery.
3. Remedies
Perform the procedures according to the following flowcharts.
"Sim" in the flowchart means "Simulation."
Memory trouble
Procedures for memory trouble, main control PWB replacement, and main control PWB EEPROM replacement
"U2" trouble occurs
Repair the defective section
Replace the main control PWB
NO Do you replace the main control
PWB?
YES
Replace the main control PWB
Cancel "U2" trouble with simulation 16
1
Replace the
EEPROM in the main control PWB
Is the
EEPROM in the main control
PWB defective?
YES
NO
Mount the EEPROM of the old main control to the new main control
Replace the EEPROM
End
Replace the main control PWB
Clear the drum c ounter with Sim 24-7.
Reset the maintenance counter with Sim 20-1.
1
10 – 1
1
Is the toner density reference value recorded?
NO
YES
Enter the toner density reference value with Sim 73-1.
Use Sim 25-2 to set the toner density reference value
Use Sim 43-1 to set the fusing temperature
Set the temperature in the power save mode with Sim 43-2.
Set the model with Sim 26-1.
Use Sim 21-1 to set the maintenance cycle to the specified value
Use Sim 26-6 to set the desitination specifications
Use Sim 26-13 to set the operation mode in warm-up
Set to the manual paper feed mode with Sim 26-12.
Set to the correction mode with Sim 44-1.
Execute Sim 47.
Is the copy density adjustment value recorded?
NO
YES
Use Sim 46-1/51-6 to set the copydensity adjustment value
Is the vertical copy magnification ratio adjustment value recorded?
NO
YES
Use Sim 48-1 to the vertical copy magnification ratio adjustment value
NO
Is the horizontal copy magnification ratio adjustment value recorded?
YES
Use Sim 48-2 to set the horizontal copy magnification ratio adjustment value
Make a copy and adjust the copy density (Sim 46-1/
51-6)
Make a copy and adjust the vertical magnification ratio
Make a copy and adjust the horizontal copy magnification ratio
Is the vertical copy magni fication ratio adjustment value in zoom copying recorded?
NO
YES
Use Sim 26-8 to set the vertical magnification ratio adjustment value in zoom copying
Make a copy amd adjust the vertical magnification ratio in zoom copying
Is the adjustment value of contact pressur between the main body resi st roller and the copy paper recorded?
NO
YES
Use Sim 51-2 to set the adjustment value of contact pressure between the main body resist roller and the copy paper
Make a copy and adjust the contact pressure between the main body resist roller and the copy paper
2
10 – 2
2'
Are the image lead edge position adjustment value and the resist roller ON timing adjustment value recorded?
YES
NO
Use Sim 50-1 to set the image lead edge position adjustment value and the resist roller ON timing adjustment value
Make a copy and adjust the image lead efge position and the resist roller ON timing
Is the SPF mode horizontal copy magnification
NO ratio adjustment value recoded?
YES
Use Sim 48-3 to set SPF mode horizontal copy magnification ratio adjustment value
Make a copy and adjust the SPF mode horizontal copy magnification ratio
Is the adjustment value of contact pressure between the SPF resist roller and the document recorded?
NO
YES
Use Sim 51-2 to set the adjuatment value of contact pressure between the
SPF resist roller and the document
Make a copy and adjust the contact pressure between the
SPF resist roller and the document
Is the SPF resist roller ON timing adjustment value recorded?
NO
YES
Use Sim 50-1 to set the SPF resist roller ON timing adjustment value
Make a copy and adjust the
SPF resist roller ON timing
Is the void amount adjustmant value recorded?
NO
YES
Use Sim 45-1 to set the void amount adjustment value
Make a copy and adjust the void amount
End
10 – 3
4. Set value recording sheet
Purpose/kind
Adjustment
Setting
Section
Paper feed section
Optical unit
Developing unit
Specifications
Fuser unit
Process
Maintenance counter
Main code
51
26
45
46
47
48
50
48
51
25
26
26
43
44
21
Sub code
2
8
1
1
2
1
3
2
6
2
1
6
13
1
2
1
1
Contents
Set value Description
Adjustment value of contact pressure of the paper on the main body resist roller
Adjustment value (lens shift amount adjustment value) of copy magnification ratio in zoom copying
Adjustment value of copy paper lead edge void amount
Adjustment value of copy density (exposure level) in each copy mode and of copy density gradient (exposure gradient)
Manual copy mode density level 1 (Not toner save mode)
Manual copy mode density level 5 (Not toner save mode)
Manual copy mode density level 1 (Toner save mode)
Manual copy mode density level 5 (Toner save mode)
Auto copy mode density level 1 (Not toner save mode)
Auto copy mode density level 5 (Not toner save mode)
Auto copy mode density level 1 (Toner save mode)
Auto copy mode density level 5 (Toner save mode)
Photo copy mode density level 1 (Not toner save mode)
Photo copy mode density level 5 (Not toner save mode)
The AE sensor and the optical section characteristics memory data for the change in the copy lamp application voltage
The vertical copy magnification ratio adjustment value
The horizontal copy magnification ratio adjustment value (when the document table is used)
The adjustment value of copy image position on the copy paper
SEt value A
Set value B
Set value C
The horizontal copy magnification ratio adjustment value
(When the SPF is used)
The adjustment value of the contact pressure between the SPF resist roller and the document
SPF copy mode density level
Setting the toner concentration level
Model setting (With SPF or without ?)
Destination specifications
Setting of the main motor operation mode in warming up
The set value of fusing temperature
Fusing temperature setting in the power save mode
Image correction mode function setting
Setting of the maintenance cycle
Memorizef•%!alues in theolumn ofxSet valu for ef cient s vicing hen the memory trouble occurs and the EEPROm is replaced.
Make a copy of this sheet and use with the service sheet.
10 – 4
5. Memory simulation list
Purpose/kind
Adjustment
Setting
Section
Paper feed section
Optical unit
Process
Developer unit
SPF unit
44
25
48
51
Specifications
Main code
51
26
45
46
47
48
50
26
1
2
1
2
6
1
1
2
3
Sub code
2
8
1
1
6
Default value
50
11
50
50
50
50
50
50
50
50
Contents
Description
Adjustment value of contact pressure of the paper on the main body resist roller
Adjustment value (lens shift amount adjustment value) of copy magnification ratio in zoom copying
Adjustment value of copy paper lead edge void amount
Adjustment value of copy density (exposure level) in each copy mode and of copy density gradient (exposure gradient)
Manual copy mode density level 1 (Not toner save mode)
Manual copy mode density level 5 (Not toner save mode)
Manual copy mode density level 1 (Toner save mode)
Manual copy mode density level 5 (Toner save mode)
Auto copy mode density level 1 (Not toner save mode)
Auto copy mode density level 5 (Not toner save mode)
Auto copy mode density level 1 (Toner save mode)
Auto copy mode density level 5 (Toner save mode)
Photo copy mode density level 1 (Not toner save mode)
Photo copy mode density level 5 (Not toner save mode)
The AE sensor and the optical section characteristics memory data for the change in the copy lamp application voltage
The vertical copy magnification ratio adjustment value
The horizontal copy magnification ratio adjustment value (when the document table is used)
The adjustment value of copy image position on the copy paper
Set value A
Set value B
Set value C
Process correction mode setting
Toner density initial set value
The horizontal copy magnification ratio adjustment value (when the document table is used)
The adjustment value of contact pressure between the SPF resist roller and the document
Adjusting value of copy density in the SPF mode
Setting the option
W/O Personal Counter
With Personal Counter
SF-2314
0
20
SF-2414
04
24
SF-2514
05
25
Ref. page
8-3
7-16
7-20
7-26
7-26
7-15
7-16
7-19
4-5
7-18
8-3
7-28
8-7
Specifications setting by destination 8-8
JAPAN
SEC
SECL
SEEG
SUK
SCA
Inch series
AB series
CAG Inch series
CAG AB series
Data
00
01
02
03
04
05
06
07
08
11
10 – 5
Purpose/kind
Setting
Counter
Trouble cancel
Section
Fuser unit
Process
Total counter
43
44
22
20
21
22
Main code
26
14
16
1
5
1
1
2
1
1
2
Sub code
13
Default value
0
Contents
Description
Setting of the main motor operation mode in warming up.
Code
No.
0
1
Operation mode
Normal mode
Long mode
Operation
When the fusing temperature reaches the specified level, the main motor stops.
The main motor keeps rotating until the completion of the warming up.
185˚C Fusing temperature set value
0 Fusing temperature setting value in the power save mode
16 Picture correction mode function setting
Used to confirm the total counter value.
Used to reset the maintenance counter.
2 Used to set the maintenance cycle.
Used to confirm the maintenance count value.
Used to confirm the set maintenance cycle (maintenance preset counter).
Used to cancel troubles other than self diag "U2".
After cancellation of the trouble, the simulation is also cancelled automatically.
Used to cancel self diag "U2" trouble.
After cancellation of the trouble, the simulation is also cancelled automatically.
Ref. page
8-8
8-8
8-8
8-9
8-9
8-9
8-9
8-9
8-12
8-12
[11] MAINTENANCE
▲ Replacement/Installation F Cleaning ✭ Lubrication
✕ Check (Clean, replace, or adjust as required.) v
Developing
Process, peripheral
Fusing
Optical
Transport
SPF
Other
Developer
Content
Toner supply
Seal
OPC drum
Main charger, saw tooth, grid, separation pawl
Transfer charger wire
Separation plate (half etching)
Transfer charger case
Fusing lower CL roller
Fusing upper heat roller
Fusing bearing
Fusing gear
Fusing lower heat roller
Thermistor
Fusing upper separation pawl
Fusing lower separation pawl
Mirror, lens, reflector
Sensors
Drive wire, pulley
Mirror base rail
Glass, OC matt
Manual paper feed section roller
Cassette paper feed section roller
Paper transport rollers
Suction belt (only target destinations) Japan
Paper transport section paper guide
Paper feed roller
Transport roller
Original transport guide
OC matt
Gears (drive sections)
Blank lamp, discharge lamp
Ozone filter
Picture quality
40K
▲
✕
▲
▲
F
F
F
F
F
F
F
F
F
F
✭
F
F
F
F
F
✕
F
F
F
F
✭
F
✕
F
▲
F
▲ v
120K
▲
✕
▲
▲
F
F
F
F
F
F
F
F
F
F
✭
F
F
F
F
F
✕
F
F
F
F
✭
F
✕
F
▲
F
▲ v
80K
▲
✕
▲
▲
F
F
F
F
F
F
F
F
F
F
✭
F
F
✕
✭
F
▲ v
▲
▲
▲
▲
▲
▲
▲
▲
F
▲
▲
160K
▲
✕
▲
▲
F
F
F
F
F
F
F
F
F
F
✭
F
F
✕
✭
F
▲ v
▲
▲
▲
▲
▲
▲
▲
▲
F
▲
▲
240K
▲
✕
▲
▲
F
F
F
F
F
F
F
F
F
F
✭
F
F
✕
✭
F
▲ v
▲
▲
▲
▲
▲
▲
▲
▲
F
▲
▲
200K
▲
✕
▲
▲
F
F
F
F
F
F
F
F
F
F
✭
F
F
F
F
F
✕
F
F
F
F
✭
F
✕
F
▲
F
▲ v
11 – 1
[12] ELECTRICAL SECTION
1. System block diagram
3 6 2
LM
1
AE PWB MIR.M
3 6
MHP S
2 3 6
BL PWB
2
DL PWB
LHPS
3
MFD1
2
MFD0
2 6 2
DV UNIT
SPFM
1,2
PERS ONAL
COUNTER
2 MAIN PWB
CPU, MEMORY, DRIVER
AC POWER
OPERATION PWB
2 3 6
DC POWER SUPPL Y CIRCUIT
3
4
1
2
5
6
+32V
+24V
+5V1
+5V2
FW
GND
HL
AC CIRCUIT PWB
CL
6
CRU PWB
4
POWE R
UNITS
MAIN SWITCH
DRY HEATER
BIAS
SHV
MHV
TH V
GRID
+30V
7
1 2 3 6
SPF PWB
3
MAIN MOTOR
PWB
1
MM
LOWER UNIT PWB
1 2 3 6
HIGH VLOTAGE PWB
1 6
2. System operation at power ON
Power ON
Initial setting
Memory transfer
Trouble
NO
JAM
NO
Door open
NO
Warm up
Warm up complete
Racing
Racing complete
RPL ON
PSW ON
RPL ON
Copy cycle
Copy end
• Heater lamp ON
• Mirror initialization
• Lens initialization
• Toner density control
CFM
RR C
TM
PSPS
POD
MPFS
MPFC
SPFD
SPM
SPFC
SRRC
SP PD
SD SW
SPOD
TRC
VFM
2 6
2
2
2
2
2
3 6
3 6
7
2
2
3 6
3
3 6
2
2 6
CPFC1
PW D
PPD
CPED1
CPED2
CSDSW
CSPPD
CPED2
3
2
3
3
3
2
3
3
12 – 1
3. Main circuit
(1) Block diagram
Lower unit control
Operation panel
Toner motor
IC109
IC105
Multi bypass detection paper transport sensor
Mirror home position sensor
Lens home position sensor
Paper exit sensor
SPF paper transport sensor
Ventilation fan
Cooling fan
SPF fan
Q102 Q103
IC104 IC104
IC108
Heater lamp
Copy lamp
Power relay
IC112
IC111
FW
Q109
Q108
Q110
IC112
Thermistor
Q111
Q107
Blank lamp
Discharge lamp
Driver
(Invertor)
IC102
IC104
IC106
IC108
RAM
IC103 CP U
IC110
Counter
Transport clutch
Separation solenoid
Multi bypass paper feed clutch solenoid
Lens motor
SPF motor control
SPF paper feed
transport clutch
Main motor control
Power switch
IC113 IC112
+32V +24V +5V1 +5V2 FW GND
+5V2 FW
Q101 IC101
DC power section
(2) CPU (IC110) M37702
1
Outline
The M37702M2-XXXFP is a 16-bit, single-chip microprocessor which employs the high performance silicon gate CMOS process, and it is packed in 80-pin plastic mold flat package. The single chip microprocessor is equipped with a big address space of 16MB, the command cue buffer to execute commands at high speeds, and the data buffer. The CPU is of 16 bit parallel process, and allows selection of 8 bit parallel process mode if necessary.
Thermistor
Toner sensor
Developer color detection
Main PWB destination detection
SPF paper sensor
2
Pin arrangement
14
15
16
17
18
11
12
13
5
6
7
8
9
10
3
4
1
2
19
20
21
22
23
24
P70/AN0
P67/TB2IN
P66/TB1IN
P65/TB0IN
P64/INT2
P63/INT1
P62/INT0
P61/TA4IN
P60/TA4OUT
P57/TA3IN
P56/TA3OUT
P55/TA2IN
P54/TA2OUT
P53/TA1OUT
P52/TA1IN
P51/TA0OUT
P50/TA0IN
P47
P46
P45
P44
P43
P42/
Φ
1
P41/RDY
Q105
IC107
IC111
Mirror motor
AE sensor
51
50
49
48
47
54
53
52
60
59
58
57
56
55
64
63
62
61
46
45
44
43
42
41
P84/CTS1/RTS1
P85/CLK1
P86/RXD1
P87/TXD1
P00/A0
P01/A1
P02/A2
P03/A3
P04/A4
P05/A5
P06/A6
P07/A7
P10/A8/D8
P11/A9/D9
P12/A10/D10
P13/A11/D11
P14/A12/D12
P15/A13/D13
P16/A14/D14
P17/A15/D15
P20/A16/D0
P21/A17/D1
P22/A18/D2
P23/A19/D3
12 – 2
3
Block diagram
Data bus (Even)
Data bus (Odd)
Data buffer D BH (8)
Data buffer D BL (8)
Command cue buffer Q0 (8)
Command cue buffer Q1 (8)
Command cue buffer Q2 (8)
Incrementor (24)
Program address register PA (24)
Data address register DA (24)
Incrementor/decrementor (24)
Program counter PC (16)
Program bank register PG (8)
Data bank register DT (8)
Input buffer register IB (16)
Processor status register PS (11)
Direct page register DPR (16)
Stack pointer S (16)
Index register Y (16)
Index register X (16)
Accumulator B (16)
Accumulator A (16)
Arithmetic logic unit (16)
Address bus
12 – 3
4
CPU: M37702 (IC110) pin signals
53
54
55
49
50
51
52
42
43
44
45
39
40
41
46
47
48
30
31
32
33
27
28
29
22
23
24
25
26
34
35
36
37
38
12
13
14
15
16
17
18
19
20
21
Pin No.
1
2
3
4
5
8
9
6
7
10
11
P13
P12
P11
P10
P07
P06
P05
P25
P24
P23
P22
P21
P20
P17
P16
P15
P14
P43
P42
P41
P40
BYTE
CNVss
RESET
X
IN
X
OUT
E
Vss
P33
P32
P31
P30
P27
P26
P55
P54
P53
P52
P51
P50
P47
P46
P45
P44
Port
P70
P67
P66
P65
P64
P63
P62
P61
P60
P57
P56
LEMT0
LEMT1
LEMT2
LEMT3
MPFC
MPFS
MFD1
MFD0
MRPS
MRMT0
MRMT1
MRMT2
MRMT3
SRPL
SRRC
SPFC
SME
SPFM
VFM
CFM
POD
BYTE
CNV
SS
RESET
X
IN
X
OUT
E
Vss
PNC
TRC
NrjStar.
DVF
TMb
TMa
Signal name IN/OUT
AES IN
IN1
IN0
MMRE
FWS
IN
IN
IN
IN
MHPS
AEG2
AEG1
SMPWM
AEG0
CLPWM
IN
OUT
OUT
IN/OUT
OUT
OUT
HL
MMPWM
PR
BLPWM
PSPS
DL
SCLK
SDAT
LHPS
IMP
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN/OUT
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
IN
OUT
OUT
IN
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
IN
OUT
OUT
IN
OUT
OUT
H
H
H
H
H
H
H
H
H
H
H
H
—
H
—
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H/L
H
H
H
H
H
L
Analog input signal (AE sensor)
Lower unit serial parallel IC input 2 port
Description
Lower unit serial parallel IC input 2 port
Main motor timer input
Power zero cross pulse detection signal
Mirror home position detecting signal ("HIGH at Home position)
AE gain select signal
AE gain select signal
Transport motor timer output clock
AE gain select signal
Copy lamp control signal
Heater lamp control signal
Main motor timer output clock
Power relay control signal
Blank lamp control signal
Paper separation solenoid control signal
Discharge lamp control signal
Data output clock signal to EEPROM
Serial data I/O to EEPROM
Lens home position detecting signal (HIGH at home position)
NC
SDH cooling fan motor control signal
Ventilation fan motor control signal
Optical system cooling fan motor control signal
Paper exit detecting sinal
External data bus select signal ("L" = 16 bit, "H" = 8 bit)
Processor mode selection
Reset signal (Reset at "L")
Clock IN
Clock OUT
Enable output
Power (GND)
Personal counter clock
Transport roller clutch
Power switch OFF signal for EnergyStar (Power swith OFF at HIGH)
Not used
Toner supply motor drive signal
Toner supply motor drive signal
Lens motor drive signal A
Lens motor drive signal B
Lens motor drive signal –A
Lens motor drive signal –B
Multi paper feed clutch control signal
Multi paper feed solenoid control signal
Single/multi input 1 L
Single/multi input 2 H
Not set
H Single paper
L present
L
L
Multi
H Single paper
H exhaust
Mirror motor drive signal A
Mirror motor drive signal B
Mirror motor drive signal –A
Mirror motor drive signal –B
SDF lamp
Resist roller clutch drive signal
Paper feed roller clutch drive signal
Transport motor ON/OFF control signal
12 – 4
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
Pin No.
56
57
58
59
60
61
P86
P85
P84
P83
P82
P81
P80
Vcc
AVcc
V
REF
AV
SS
Vss
P77
P76
P75
P74
P73
P72
P71
Port
P04
P03
P02
P01
P00
P87
Signal name IN/OUT
SMG
SPPD
OUT
IN
KEY2
KEY1
KEY0
OP-DATA
IN
IN
IN
OUT
NC
OP-CLK
OP-LATCH
UN-DATA
NC
UN-CLK
—
OUT
OUT
OUT
—
OUT
OUT UN-LATCH
Vcc
AVcc
V
REF
AV
SS
Vss
ANS
MBT
CLV
RTH
IN
IN
IN
IN
TCSA IN
L
L
L
H/L
H
H
—
—
Description
Transport motor gain signal
Paper entry detecting signal
Operation PWB key input signal
Operation PWB key input signal
Operation PWB key input signal
Serial data output to operation PWB
(NC)
Data output clock signal to operation PWB
Data latch signal to operation PWB
Serial data output to lower unit PWB
(NC)
Data output clock signal to lower unit PWB
Data latch signal to lower unit PWB
Power (5V)
Analog/Digital convertor reference power voltage
Analog/Digital convertor reference voltage input
Analog/Digital convertor ground pin
Power (GND)
Analog input signal (SPF sensor input)
Analog input signal (Main PWB destination setting)
Analog input signal (Copy lamp control)
Analog input signal (Fusing thermistor)
Not used
Not used
Analog input signal (Toner density sensor)
(3) Start/stop control circuit
1 General
The circuit senses ON/OFF state of the power source to control start/stop of the circuits.
The DC power section supplies power voltages (V
H
=+32V, VB=+24V,
VC=+10V, VD1=5V, VD2=5V).
After the power voltage reaches the specified level, the circuit operation is started. Before the power voltage falls below the specified level, the circuit operation is stopped, preventing against malfunctions.
5V2
C134
22000PF
1
2
4
C106
0.1uF
IC113
VCC
NC /RESET
CAP GND
M51953BL
5
3
5V2
R145
2.4kJ
RESET1
C135
22000PF RESET2
RESET
28
CPU
(IC110)
12 – 5
(4) Heater lamp control circuit
1
General
The heater lamp control circuit detects the heat roller surface temperature with the thermistor, converts it into voltage level, and outputs it to the CPU analog input pin.
The CPU converts the analog voltage into digital signal level, compares it with the value set by simulations, turns on/off the heater lamp according to the level, and maintain the heat roller surface temperature at a constant level.
R145
1K
R147
10K
D105
MA700
R146
56KJ
VAREF
R149
7.5KJ
R150
4.7KJ
9
+
8
-
14
IC112C
NJM2901M
FTH
3
4
5
6
1
2
7
8
IC102
I1
I2
I3
I4
I5
I6
I7
GND
COM
O7
O6
O5
O4
O3
O2
O1
ULN2003A
14
13
12
11
10
9
16
15
24V
24V
Q110
DTA114YK
47K
10K
47K
10K
R105
2.2KJ 1/2W
24V
Q111
DTA114YK
PR
HL
RTH
CR501
C507
GATE
R504
T1
T2 TD501
R503
SSR501
Heat roller
HL
PR I/O
AN4
CPU
A C
When the heat roller surface temperature is low, the thermistor resistance increases. When the surface temperature is high, the resistance decreases. The thermistor terminal voltage, therefore, increases when the heat roller surface temperature is low, and decreases when the temperature is high. The thermistor terminal voltage is inputted to the CPU analog port, and the CPU controls on/off of the heater lamp with the input voltage level.
[High temperature protecting circuit in hung up of the
CPU]
The voltage at IC133 3 pin (reference voltage) is divided by R149 and
R150, and the thermistor terminal voltage is applied to IC112 9 pin.
When 9 pin voltage is lower than 8 pin voltage (the heat roller surface temperature: about 230 degree C), IC112 14 pin becomes LOW. As a result, HL signal is pulled to the GND level and the heater lamp lighting signal is not generated. (IC112 output 14 pin is normally
HIGH (Open state).)
AC PWB
(RY201)
He ater l ump
200V AREA
Thermostat
170˚ C
Thermostat
170˚ C
He ater l ump
G N D
-PR
[When the heat roller surface temperature is lower than the set temperature]
a. Since the thermistor pin voltage is higher than the set level, output signal HL from the CPU becomes HIGH. b. HL signal is passed through IC102, TR, and Q110 to the solid state relay.
When, therefore, HL signal is LOW, the internal triac turns on. c. When the internal traic turns on, a pulse is applied to the gate of the external triac to allow a current to flow from the power source through the heater lamp to the triac, thus lighting the heater lamp.
[When the heat roller surface temperature is higher than the set temperature]
a. Since the thermistor pin voltage is lower than the set level, output signal HL from the CPU becomes low. b. HL becomes low, SSR is turned off, the external triac is turned off, and the heater lamp is turned off.
[Q110]
Q110 protects the heater lamp from lighting due to trouble in the harness of the heater lamp drive signal.
12 – 6
(5) Driver circuit (Solenoid, magnetic clutch)
1
General
The control signals of each load outputted from the CPU and I/O cannot drive the load directly. The output, therefore, is delivered to the load through the driver IC.
2
Operation
The driver circuit forms a Darlington circuit with two transistors to obtain a large drive current (load current) from a small input current
(I/O output current). When the driver input voltage is HIGH (+5V), the transistor is turned on to flow a current in the arrow direction, operating the load. When the driver is turned on, the driver output pin voltage is 0V.
+24V
(6) Stepping motor drive circuit
1
General
The driver circuit drives the lens drive motor.
A: Stepping motor phase A coil drive signal
B: Stepping motor phase B coil drive signal
A: Stepping motor phase A coil drive signal
B: Stepping motor phase B coil drive signal
A
+24V
Phase A
Phase A
A
Phase B Phase B
I/O
Output
B +24V B
LOAD
A
B
A
B
Stepping motor time chart
Drive signal
A
B
C
B
(7) AE (Auto Exposure) sensor circuit
The AE circuit is composed of the AE sensor PWB which is composed of the photo diode, and the I V convertor circuit, and the amplifier circuit on the control PWB.
C150
22000PF
AES1
AE sensor PWB
24V
POK
POA
R 151
200KJ
R 150
5.6KF
12
-
13
+
R152
200KJ
14
IC111D
LM324
C 149
33P F
R 157
5.5KF
R 156
5.6KF
R153
10KJ
R155
30KF
3
2
4
-
+
B
IC111A
1
LH324
R150
10KJ
AE 5
ZD105
H ZS 583
R154
330KF
A GE2
A GE1
A GE0
Lens drive
LEMT0
LEMT1
LEMT2
LEMT3
A N0
C P U
CLP WM
Operation amplifier A performs I-V conversion of the original density level (minute current) from the sensor. Operation amplifier B amplifies the output of operation amplifier A to a suitable level for inputting to the CPU.
The amplifying level is automatically set by selecting the AE gain signal (AEG0 ~ AEG2) outputted from the CPU when simulations SIM
47 is executed.
AE operation is performed by the software in the control PWB. When a reflected ray enters the sensor, a voltage corresponding to the light quantity is inputted to the CPU. The CPU compares the input voltage and the copy lamp application voltage and controls the copy lamp voltage so that the exposure level corresponds to the original density.
12 – 7
(8) Toner supply motor drive circuit
IC104 is the motor control IC which drives the toner supply motor with the pulse signals (TMa, TMb) outputted from the I/O chip.
+24V
I/O
TMa
TMb
+5V
R208
47KJ
R209
47KJ
1
5
2
9
IC104
IN1
IN2
GND
TA7291S
7
3
6
8
TMa
TMb
+
C102
10UF35V
M
Internal circuit
+5V
2 8
+24V
6 +24V
REG
Protection circuit
(Heat insulated)
7
TMa
M
3
TMb
9 1 5
GND
TMa
TMb
Truth value table
Input
TMa
L
H
L
H
∞
: High impedance
H
TMb
L
L
H
TMa
∞
H
L
L
Output
TMb
∞
L
H
L
Mode
Stop
CW/CCW
CCW/CW
Brake
(9) Reset IC (IC113)
1
Outline
The M51953 BL is the most suitable semiconductor IC for detecting the power voltage to reset the CPU and every type of logic circuit. It is equipped with the delay circuit to provide delay time just by adding an external capacitor.
5 Output
4 Delay capacity
3 GND
External view 5P5
2 NC
1 Power
2
Operation
After td (= 30msec) from when the voltage exceeds 4.25V after power rising, the output becomes HIGH.
"td" is set by the external capacitor.
Power
R1
R2
-
+
5µA reference
1.25V
-
GND Delay capacity
Output
4.25V
0.65V
H
L
Output not constant
ta = 30m sec ta ta t t
12 – 8
(10) Copy lamp control section
The change in the copy lamp exposure level is adjusted by changing the ON period duty of the output pulse (CLPUM) from the CPU and controlling the copy lamp voltage. Fig. 1 and Fig. 2 show the circuit diagram and the waveform.
5V2
1-7C
FW
V1
R165
15kF
R166
15kF
V2
10
9
24V
R160
47kJ
R161
10kJ
IC111C
8
C131
0.01µF
D103
1SS133
R167
15kF
C107
1µF 50V
1
5
Ra6
10KJ
7
6
R163
2.2kJ
V3'
IC112B
1
LM339
1
4
Ra7
10KJ
C132
1000PF
T.P
V3
R168
16kF
R169
200kF
R170
82kF
FWS
2-4C
CLV 2-4B
ZD106
HZS5B3
Q107
2-4C
CLPWM
2-7C
/CLPWM
DTC114YK
5V1
V4
R202
4.7kJ
C133
0.047µF
R171
3kJ
10
11
ZD103
HZS7A1
T.P
R173
1kJ
13
IC112D
LM339
V5
T.P
24V
Q109
DTA114YK
R174
1kJ
T.P
D102
1SS133
R175
10kJ
Q108
2SC2411K
R105
2.2kJ 1/2W 5V2
Rb1
47KJ
Rb1
10KJ Rb2
DTC115KKA
Qb1
Qb2
100J
Qb1
0.1µF
DTC124GK
CL
I-15
Qb3
2SD1383K
12 – 9
V1
The relationship between the CLV and the pulse ON period is as shown in the figure below:
CPU output (CLPWM)
8 or 10 msec
0V
V2
Pulse ON (Changeing)
0V
(V)
V3
CLV
60Hz 50Hz
V4
0V
+5V
0V
V5
VCL
0V
0V
The copy lamp is switched by the triac. At the rising of CLPWM signal
(V4), the trigger signal CL is sent to the triac to light the lamp. The lamp will goes off later at the zero cross point of V1 waveform.
The CPU reads the control voltage level (CLV) corresponding to the change in the copy lamp voltage, and compares it with the reference level to change the ON period of the output pulse.
The CLV forms the same waveform as the copy lamp voltage waveform where the Ac input’s full rectified waveform (FW) is disabled for ON periods of the pulse. It is converted into a DC level by the low pass filter composed of C107 and R168, and is inputted to the
CPU.
Pluse ON period (msec)
•
When the pulse ON period is shorter, the CLV becomes higher, and vice versa.
•
The pulse ON period rises at he AC zero cross timing and is driven by the duty.
•
The copy lamp lighting signal generates positive pulses with C133 at falling of the CPU output, and inputs the pulses through the two-stage transistor to the photo triac.
• Section A in the figure shows the circuit which prevents against application of an overvoltage to the copy lamp.
When the pulse on period is abnormally short, the DC level applied to the IC112 10 pin becomes higher than the reference voltage of
11 pin, driving the 13 pin output to the GND level.
Therefore the lighting signal is not transmitted to R174 and later section and the lamp is not lighted.
By setting the reference voltage to a level not exceeding the rated voltage, an abnormal lighting is avoided.
1 When the AC input voltage becomes low (with the copy lamp control voltage at constant):
The FW peak at point V1 voltage at V3 .
becomes lower to decrease the CLU
Then the CPU shortens the output pulse ON period until the CLV reaches the reference level, increasing the power applied to the coy lamp.
2 When the Ac input voltage becomes higher (with the copy lamp control voltage at constant):
The reversed operations of 1 are performed to lengthen the output pulse ON period, decreasing the current flowing through the copy lamp.
3 When the copy lamp control voltage is decreased:
The CLV reference level in the CPU is lowered. The output pulse
ON period is lengthen until the CLV reaches the level, decreasing the power supplied to the copy lamp.
4 When the copy lamp control voltage is increased:
The reversed operations of 3 are performed, to shorten the output pulse ON period, increasing the power applied to the copy lamp.
12 – 10
4. Operating section
(1) Outline
The operating circuit is composed of the key matrix circuit and the display matrix circuit.
Key detection: Keys are detected with signal matrix of W0 (Q25)
∼
W7 (Q32) and KEY0
∼
KEY2.
With W0 signal at LOW (GND) and W1
∼
W7 at HIGH (open), the level of KEY0
∼
KEY2 is checked and "H" or "L" state of 4K, 2K and
3K in the key matrix is judged to judge ON/OFF.
For W1
∼
W7, switching is made every 2 msec for judgement.
+5V2 +5V1
CPU
LC7935
W0 (Q25)
KEY0
KEY1
KEY2
4K 2K 3K
2m sec
16m sec
HIGH
GND
W4
W5
W6
W7
W0
W1
W2
W3
KEY0
KEY0
4K-ON
4K-OFF
12 – 11
DATA
CLK
LATCH
ENABLE
GND
(2) Display circuit
Control is performed with the data signal and the control signal from the control circuit.
1
Block diagram
VD (+10V)
LED
S IN
VD
OUT
S OUT
BEO
CLK LATCH STROBE
VD (+5V)
VD (+5V)
DATA
CLK
Main control circuit
LATCH
ENABLE
32 bit Shift Register Sout
32 bit Latch
Driver ON/OFF Control
Driver
01 032
VD
GND
VD (+5V) VD (+10V)
DC power circuit
2
Operation
Clock
1 8
5V
5V Data signal
Latch signal
Strobe signal
Output LED
1
2
3
4
5V
LED light up at LOW level (0V)
51
52
DAta signal (8 bit) sent from the main control PWB is shifted at the rising timing of the clock and retained at the rising timing of the latch signal.
The retained data is outputted when STROBE signal becomes HIGH
(5V).
12 – 12
(3) LED display
The LED is lit up by the signal matrix of MDL0 (Q1)
∼
MDL1 (Q2) and
F0 (Q3)
∼
F20 (Q23).
By turning on/off ports F0
∼
F20 with the timing of MDL0 and MDL1, the LED at the matrix cross point is lighted up.
+5V1
DTB113ZS
RDL1
PEL
MDL0
MDL1
FO
MDL0
Q1
MDL1
Q2
2m sec
RDL1-ON PEL-ON
F1
Q4
LC7935
Cycle 4 msec 1/2 duty
GND
GND
GND
5. Power section
Each AC voltage generated by the power transformer in the AC PWB unit is full-wave rectified and smoothed to stabilize each voltage (UH,
UB, VD) in the main PWB side, and is supplied to loads.
(1) Signal name and output voltage
GND: 0V
VH: +30
∼
44V (Separated into 24V and 32V supply in the main
PWB.)
VD: +24V
∼
35V (Forms 5V supply in the main PWB.)
FW: Full-wave rectification
FW 10~14V
• AC PWB unit
L2
N1
F503
CNA-3
POWER TRANS
CNB-5
F504
CNB-6
CNB-1
F505
CNA-1
CNB-2
CNB-3
CNB-4
~
_
+
~
_
+
~
_
+
~
RBV-608
BD501
C509
6800uF 50V
S1NB60
BD502
~
S1ZB60
BD503
~
C510
2200uF 25V
R508
24KJ
CNE-1
CNE-2
CNE-3
CNE-4
CNE-7
VH
VH
GND(VH)
GND(VH)
VD
CNE-8
CNE-5
GND(VD)
FW
CNE-6
GND(FW)
12 – 13
• In the main PWB unit
VH
L-7
32V
L-8
32V
L-5
P-GND
L-6
P-GND
L-3
5V1
VD
L-4
S-GND
About 32V (VH)
32V
CHK JP
C103
470uF 63V
C144
22000PF
NPN transistor
D101
DSS131
Q101
2SD1769 R101
510J 1/2W
C142
22000PF
C143
22000PF
ZD101
RD13EB1
ZD102
RD13EB1
C102
47uF 35V
Zenor diode
Three-termonal regulator
1
IC101
MC7805CT
3
2
C101
0.47uF 25V
C104
47uF 10V
C145
22000PF
C146
22000PF
24V
CHK JP
+24V (VB)
5V1
CHK JP
+5V (VD)
D126
RB411D
C147
22000PF
5V2
C105
4.7mF
CHK JP
POWER GND
5V1
5V1
5V2
5V2
32V
32V
FB105
32V
24V
24V
12 – 14
CAUTION FOR BATTERY REPLACEMENT
(Danish) ADVARSEL !
Lithiumbatteri – Eksplosionsfare ved fejlagtig håndtering.
Udskiftning må kun ske med batteri af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandoren.
(English) Caution !
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used batteries according to manufacturer’s instructions.
(Finnish) VAROITUS
Paristo voi räjähtää, jos se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. Hävitä käytetty paristo valmistajan ohjeiden mukaisesti.
(French) ATTENTION
Il y a danger d’explosion s’ il y a remplacement incorrect de la batterie. Remplacer uniquement avec une batterie du même type ou d’un type équivalent recommandé par le constructeur.
Mettre au rebut les batteries usagées conformément aux instructions du fabricant.
(Swedish) VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens instruktion.
III
q
1997 BY SHARP CORPORATION COPYRIGHT
All rights reserved.
Printed in Japan.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted.
In any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of the publisher.
SHARP CORPORATION
Printing Reprographic Systems Group
Quality & Reliability Control Center
Yamatokoriyama, Nara 639-11, Japan
1997 September Printed in Japan S

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Key features
- Compact design
- Energy save mode
- Ozone generation limitation
- Recyclable materials
- Fast warm-up
- Fast first copy
- Automatic document feeder (SF-2514)
- User-friendly operation