SHARP SF 2014, SF 2114, SF 2214 Copier Service Manual

Below you will find brief information for Copier SF-2214, Copier SF-2114, Copier SF-2014. This copier features a novel two-component development system, which eliminates the need for developer replacement. It offers a fast warm-up time of 30 seconds or less, and the first copy can be produced in as little as 5.9 seconds. The SF-2214 model includes a standard automatic document feeder, allowing for increased copy productivity. Additionally, the machine is designed to be energy-saving and whisper-quiet.

PDF

Document

SF-2014

SF-2114

SERVICE MANUAL

CODE: 00ZSF2214SMRE

MODEL

SF-2014

MODEL

SF-2114

MODEL

SF-2214

Options

•

Paper tray (SF-UB14)

•

Multi paper feed unit (SF-MF14)

•

Paper feed unit (SF-CM14)

•

Copier table (SF-720D2)

•

Personal counter (SF-71A/71B)

SF-2214

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. Novel technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

4. Novel functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

[ 2 ] PRODUCT SPECIFICATIONS

. . . . . . . . . . . . . . . 2-1

1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2. Details of each section . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

3. Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

[ 3 ] EXTERNAL VIEW AND INTERNAL

STRUCTURE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1. External view and internal structure

(SF-2214 as the example model) . . . . . . . . . . . . . . . . . 3-1

2. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3. Cross section (SF-2214 as the example model) . . . . . . 3-3

4. Switches, sensors, detectors

(The SF-2214 as the typical example) . . . . . . . . . . . . . 3-4

5. Clutches, solenoids

(The SF-2214 as the typical example) . . . . . . . . . . . . . 3-5

6. Motors (The SF-2214 as the typical example) . . . . . . . 3-6

7. PWBs (The SF-2214 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

(5) Toner density sensor level check . . . . . . . . . . . . . . 4-5

(6) Accessory attachment . . . . . . . . . . . . . . . . . . . . . . . 4-5

4. Locking procedure for transit or repacking

(1) No.2/No.3 mirror unit (Mirror base B) lock . . . . . . . 4-5

(2) No.4/no.5 mirror unit (Mirror base C) lock . . . . . . . 4-6

[ 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

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-2214 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

1-6. 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

3-6. Scraper replacement . . . . . . . . . . . . . . . . . . . . . . .6-8

3-7. Thermistor/thermostat removal . . . . . . . . . . . . . . . .6-8

3-8. Heat roller/heater lamp removal . . . . . . . . . . . . . .6-8

4. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-9

4-1. Copy lamp replacement . . . . . . . . . . . . . . . . . . . . .6-9

4-2. Copy lamp unit replacement . . . . . . . . . . . . . . . . . .6-9

4-3. Mirror base drive wire replacement . . . . . . . . . . . .6-9

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) . . . 7-13

(6) Copy magnification ratio adjustment . . . . . . . . 7-14

(7) Uniformity adjustment . . . . . . . . . . . . . . . . . . . 7-17

(8) Image loss/void area adjustment . . . . . . . . . . . 7-18

3. COPY DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . 7-24

(1) Copy density adjustment timing . . . . . . . . . . . . . 7-24

(2) Note for copy density adjustment . . . . . . . . . . . . 7-24

(3) Necessary items for the copy density adjustment 7-24

(4) Copy density adjustment mode . . . . . . . . . . . . . . 7-24

(5) Copy density adjustment procedure . . . . . . . . . . 7-24

A. Test chart (UK0G-0162FCZZ) setting . . . . . . 7-24

B. Normal copy mode (Non-toner-save mode) copy density adjustment . . . . . . . . . . . . . . . . 7-24

C. Normal copy mode (Toner save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-25

D. Photo copy mode (Non-toner-save mode) copy density adjustment . . . . . . . . . . . . . . . . 7-25

E. Auto copy mode (Non-toner-save mode)

copy density adjustment . . . . . . . . . . . . . . . . 7-25

F. Auto copy mode (Toner save mode) copy density adjustment . . . . . . . . . . . . . . . . . . . . . 7-26

(6) Copy density adjustment table . . . . . . . . . . . . . . 7-27

4. Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28

(1) Transfer charger wire installation . . . . . . . . . . . . 7-28

(2) DV bias adjustment . . . . . . . . . . . . . . . . . . . . . . . 7-28

(3) Separation charger output adjustment . . . . . . . . 7-28

[ 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

4 CPU: M37702 (IC110) Pin No. . . . . . . . . . . .12-14

[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-

2214 only) increases copy productivity.

•

The photoconductor and the peripheral parts are integrated into units. The novel two-component development system eliminates the need for developer replacement. Parts replacement procedures in the fuser section and the paper feed section are simplified to remarkably reduce maintenance time.

[Soft]

• The energy save mode reduces the total power consumption.

• The noise limiting design results in the quietest machine in the industry (46 dB).

• 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.

2. Target users

Average copy volume of 2,000

∼

3,000 sheets/month (max. 10,000 sheets/month)

3. Novel technology

Novel two-component development system

During copy process, developer is substituted little by little to prevent image deterioration. Replacement of developer is not needed. A developer/toner recycling method is used.

SPF (Single Pass Feeder)

When documents are placed in the feed port and the PRINT key is pressed, the SPF will feed the documents automatiaclly. The SPF enables one set of copies for one set of documents.

4. Novel functions

Power save function

After a set time, has passed since a copy run has finished, the pwer save function operates to save energy. There are two kinds of power save function as shown below. The preferred power save mode can be selected by the key operator.

1) Pre-heat

• The temperature in the fuser section is lower than that in the ready state.

• Within 10 sec after completion of pre-heating, the machine returns to the ready state.

2) Auto power shut off

•

Power supply to the fuser section is shut off.

• The time required to return to the ready state and turn on the ready lamp after completion of auto power shut off is the same as warm-up time after turning on the power.

5. System outline

SPF (Standard)

Zooming range

(64 ~ 129%)

SF-2214

250-sheet tray

Single manual feed (Standard)

50-sheet multi manual feed unit (SF-MF14)

(Option)

SYSTEM TABLE

(Option)

250-sheets paper feed unit

(SF-CM14)

250 sheets

SF-2114

Zooming range

(64 ~ 129%)

250-sheet tray

Single manual feed (Standard)

50-sheet multi manual feed unit (SF-MF14)

(Option)

250 sheets

No.2 cassette unit

(Option)

250-sheets paper tray

(SF-UB14)

SF-2014

Zooming range

(1:1)

250-sheet tray

Single manual feed (Standard)

50-sheet multi manual feed unit (SF-MF14)

(Option)

* As the other options for all the modeks, the desk (SF-720D2) and the personal counter (SF-71A/71B) are available.

MODEL

ZOOM

SF-2014 NON

SF-2114 STANDARD

SF-2214 STANDARD

2ND PAPER FEED UNIT

(OPTION)

STANDARD (SF-M14)

2ND PAPER FEED UNIT

(OPTION)

NON

FUNCTIONS/OPTIONS

MULT PAPER FEED UNIT

(OPTION)

AVAILABLE (OPTION) (SF-MF14)

AVAILABLE (OPTION) (SF-CM14) AVAILABLE (OPTION) (SF-MF14)

SINGLE PAPER FEED UNIT

STANDARD

PAPER FEED TRAY

(OPTION)

OPTION (SF-UB14)

1 – 1

1 – 2

[2] PRODUCT SPECIFICATIONS

1. Basic specifications

(1) Type:

(2) Copy speed

• SF-2014

Table top

Paper size

Normal

11 sheets/min

A4 (Landscape) 14 sheets/min

B5 (Landscape) 14 sheets/min

″ ×

″

11 sheets/min

Legal 11 sheets/min

Letter (Landscape) 14 sheets/min

Enlargement

—

Reduction

—

• SF-2114/2214

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

″ ×

″

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

Pre-heat

Auto power shut off

Max. 30 sec

Max. 10 sec

Max. 30 sec

(4) First copy time: 5.9 sec (Fed from No. 1 cassette)

(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) Document

Max. document size

Document reference position

B4/10

″

/14

″

Left side

Detection No

(8) Copy magnification ratio (model SF-2114/2214 only)

Fixed magnification ratio

Zoom range

AB series

Inch series

122, 115, 81, 70%

129, 117, 78, 64%

∼

129% in 66 steps of

1% increment

(9) Exposure

Exposure mode

Manual steps

Auto/Manual/Photo

9 steps

(10) Void width

Void area

Image loss

Normal

Lead edge

3.0mm or less

Lead edge

3.0mm or less

(11) Paper exit

Paper exit tray capacity

Enlargement

Lead edge

3.0mm or less

Lead edge

2.5mm or less

Reduction

Lead edge

3.0mm or less

Lead edge

5.0mm or less

100 sheets

(12) External demensions

H (mm)

Occupying width (mm)

Weight

SF-2014 SF-2114

500

480

295 500

SF-2214

480

500 + 261 (Paper exit tray) +

205 (Option MB)

364

26.2 Kg 26.7 Kg 29.5 Kg

(13) Power source

Power source

Frequency

100V, 110V, 120V, 127V, 220

∼

240V,

220V, 240V

50/60Hz

(14) Power consumption

Max. power consumption

Average power consumption when operating

Power consumption in standby

Power consumption in pre-heating

Power consumption in auto power shut off

Note: Max. value when an option is installed.

1.4 kW

0.48 kW

0.095 kW

0.056 kW

0.026 kW

2. Details of each section

(1) Paper feed section

AB series

Copy size

Inch series

Paper feed system

Paper feed capacity

∼

″ ×

″ ∼

″ ×

″

1 cassette + manual paper feed

250

1 + 1 or 50

• AB series

Paper feed port

Tray

Paper feed unit

(OP)

Single manual feed

Paper feed size

∼

(Landscape)

∼

(Landscape)

∼

(Portrait)

∼

(Portrait)

Multi manual feed

• Multi paper feed

• Single paper feed

∼

(Portrait)

∼

(Portrait)

∼

(Portrait)

Paper weight

∼

80g/m

Special paper

Recycled paper

∼

80g/m

Recycled paper

∼

130g/m

104

∼

130g/m

Second original,

OHP, label

Postcard, recycled paper

∼

130g/m

∼

130g/m

104

∼

|130g/m

Postcard, recycled paper

Second original,

OHP, label, postcard, recycled paper

2 – 1

• Inch series

Paper feed port

Tray

Paper feed unit

(OP)

Single manual feed

Paper feed size Paper weight

″ ×

14 invoice

″ ∼

″ ×

″ ∼ invoice

∼

21 lbs Recycled paper

∼

21 lbs

Special paper

Recycled paper

″ ×

″ ∼

″ ×

″

Letter

∼

″ ×

″

∼

34.5 lbs Second original,

OHP, label

∼

34.5 lbs Postcard, recycled paper

Multi manual feed

(OP)

• Multi paper feed

• Single paper feed

″ ×

″ ∼

″ ×

″

″ ×

″ ∼

″ ×

″

Letter

∼

″ ×

″

∼

21 lbs Recycled paper

∼

34.5 lbs

∼

34.5 lbs

Second original,

OHP, label, postcard, recycled 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

Discharge plate/separation pawl

Copy mode

Standard

Photo

Toner save

Simulations

No.

8-02

8-03

8-04

Grid voltage

–780V

10V

–480V

10V

–660V

10V

–50.0

Novel two-component developing system

(Developer replacement not required)

Magnetic sensor system Toner density detection system

Toner box capacity

Developing bias

• Developer

Material

Charging system

• Toner

Charging system

Developer 48g, toner 180g

DC–200V

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-2214

Document load capacity About 20 sheets, max. thickness of 3.0 mm

Document size A5

∼

B4, 5 1/2

″ ×

8 1/2

″ ∼

″ ×

″

Document replacement speed

14 sheets/min

Document weight 52

∼

90 g/m

Random/mix paper feed Not available

2 – 2

3. Supplies

USA, Canada

No.

Item

1 OPC Drum Cartridge

2 OPC Drum Kit

3 Black Toner

4 Black Developer

5 Heat Roller Kit

Contents

• OPC Drum Cartridge

• OPC Drum

• Cleaner Blade

• Black Toner Cartridge

•

Black Developer Cartridge

• Upper Heat Roller

• Upper Separation Pawl

• Lower Heat Roller

•

Lower Separation Pawl

Europe/Australia/Newzealand/Middle Easte/Africa

No.

Item

1 OPC Drum Cartridge

2 OPC Drum Kit

3 Black Toner

4 Black Developer

Contents

• OPC Drum Cartridge

• OPC Drum

• Cleaner Blade

• Black Toner Cartridge

• Black Developer Cartridge

5 Heat Roller Kit • Upper Heat Roller

• Upper Separation Pawl

• Lower Heat Roller

• Lower Separation Pawl

Asia/Central and South America

No.

Item

1 OPC Drum Cartridge

2 OPC Drum Kit

3 Black Toner

4 Black Developer

5 Heat Roller Kit

Contents

• OPC Drum Cartridge

• OPC Drum

• Cleaner Blade

• Black Toner Cartridge

•

Black Developer Cartridge

• Upper Heat Roller

• Upper Separation Pawl

• Lower Heat Roller

•

Lower Separation Pawl

Saudi Arabia

No.

Item

1 OPC Drum Cartridge

2 OPC Drum Kit

Black Toner

4 Black Developer

5 Heat Roller Kit

Contents

• OPC Drum Cartridge

• OPC Drum

• Cleaner Blade

• Black Toner Cartridge

• Black Developer Cartridge

• Upper Heat Roller

• Upper Separation Pawl

•

Lower Heat Roller

• Lower Separation Pawl x 1 x 1 x 1 x 1 x 10 x 1 x 3 x 1 x 3

80K

Life

40K

Model name

SF-214DR

SF-214DK1

SF-214NT1

SF-214MD1

(SF-214ND1 x 10)

SF-214HR1

Packing unit

5 x 1 x 1 x 1 x 1 x 10 x 1 x 3 x 1 x 3

80K

Life

40K

Model name

SF-214DM

SF-214DK2

SF-214T1

SF-214LD1

(SF-214DV1 x 10)

SF-214HR

Packing unit

* Except for Saudi Arabia x 1 x 1 x 1 x 1 x 10 x 1 x 3 x 1 x 3

80K

Life

40K

Model name

SF-214DR

SF-214DK1

SF-214ST1

SF-214CD1

SF-214HR

Packing unit

5 x 1 x 1 x 1 x 10 x 10

Life

40K

Model name

SF-214DH

SF-214DK3 x 1 x 3 x 1 x 3

4K x 10

80K

SF-214HT1

(SF-214FT1 x 10)

SF-214LD1

(SF-214DV1 x 10)

SF-214HR1

Packing unit

2 – 3

COMPATIBILITY TABLE OF OPC DRUM UNIT

TYPE COLOR OF DRUM FLANGE

CURA BLACK

CRUB

CRUC

SRUA

BLACK

SKIN COLOR

MODEL NAME

SF-DR14

LIFE OPC DRUM

40K HANDRING BY SERVICEMAN

SN-142DR 25K HANDRING BY CUSTOMER

ZT-80DR 20K HANDRING BY CUSTOMER

SF-214DR (SF-214DK1) 40K HANDRING BY SERVICEMAN

SRUB BLUE SF-214DM (SF-214DK2) 40K HANDRING BY SERVICEMAN

SF-214DH (SF-214DK3) 40K HANDRING BY SERVICEMAN

TYPE MODEL NAME

CURA SF-DR14

CRUB SN-142DR

CRUC ZT-80DR

SRUA SF-214DR (SF-214DK1)

SRUB SF-214DM (SF-214DK2)

SF-214DH (SF-214DK3)

DRUM SHAFT

SIZE

7mm

9mm

8mm

SHAFT SIZE

OF FRAME

7mm

9mm

8mm

FIXING

METHOD

SCREW

LOCK RIB

SCREW

*1/*2: Hardware Is common but setting condition is different of the T.C 26-6.

EEPROM

INSTALLED JAPAN

DESTINATION

INSTALLED North America (SN Series)

INSTALLED North America (Z Series)

NON North America (SF Series)

NON

Latin America/Asia

Europe/Australia/Middl Eeste/Africa

Saudi Arabia/Jordan

MATCHING MAIN CONTROL PWB

(PART CODE)

*1 CPWBF1051FC51

CPWBF1051FC52

CPWBF1051FC53

*2 CPWBF1051FC51

CONTROL RESISTOR (R102)

82K

36K

24K

82K

COMPATIBILITY TABLE OF TONER CARTRIDGE

TYPE MODEL NAME

A SF-214NT1

SF-214ST1

B SF-ST14B

SF-214HT1

SF-214T1

SN-142NT1

ZT-80TD1

LIFE

TONER

DESTINATION

North America (SF Series)

Latin America/Asia

2.5K

Japan

4K Saudi Arabia/Jordan

Europe/Australia/Middl Eeste/Africa

North America (SN Series)

North America (Z Series)

SHAPE

Developer and Heat roller kit are common use, model name is differrent but contents is same.

UPPER FRAME F

TONER CARTRIDGE BLOCK

D F F

PARTS CODE

LFRM-0800FCZZ

2 – 4

[3] EXTERNAL VIEW AND INTERNAL STRUCTURE

1. External view and internal structure (SF-2214 as the example model)

1 2 3 4 5 6

13 12 11 10

Upper unit

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

Name

G Front cover

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

Name

H Release button

K Handel

N Photoconductive drum

2. Operation panel

SF-2014

1 2 3 4

EXPOSURE

AUTO

MANUAL

PHOTO

1 2 3 4 5

TRAY SELECT

6 7 8

POWER SAVE

14 15 16 17 18

SF-2114

1 2 3 4 5 10 11 12

EXPOSURE

AUTO

MANUAL

PHOTO

1 2 3 4 5

TRAY SELECT COPY RATIO

129 %

5 ½ × 8 ½

8 ½ × 11 117 %

100 %

78 %

64 %

5 ½

10 ×

× 8

8 ½

1 1

5 ½

8 ½

ZOOM

POWER SAVE

6 7 8 9 13 14 15 16 17 18

SF-2214

1 2 19 20 3 4 5 10 11 12

EXPOSURE

AUTO

MANUAL

PHOTO

1 2 3 4 5

TRAY SELECT

COPY RATIO

129 %

117 %

5 ½

8 ½

8 ½ × 11

100 %

78 %

64 %

× 14

8 ½

5 ½

8 ½

10 × 14

× 11

5 ½

8 ½

ZOOM

POWER SAVE

6 7 8 9 13 14

No.

Misfeed indicator

Tray select key and indicators

Zoom indicator

Name

Auto/manual/photo key and indicators

No.

Name

Light and dark keys and exposure indicators

5 Toner required indicator

8 Paper required indicator

G Copy quantity display

I Zoom keys

L Clear key

O SPF misfeed indicator

10-key pad

Print button and ready indicator

SPF indicator

15 16 17 18

No Name

3 Drum replacement required indicator

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-2214 as the example model)

6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

5

4

3

2

1

47 46 45 44 43 42 41 40 39

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

[ Tray paper feed reverse roller

^ Option tray paper feed reverse roller a Resist roller d Photoconductor drum g Lower cleaning roller j Upper separation pawl

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)

\ Option tray transport follower roller

_ Option tray paper feed roller b Resist roller e Suction belt h Lower heat roller k Heater lamp

38 37 36 35 34

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

] Option tray transport roller

‘ Option tray paper feed takeup roller c Transfer charger f Upper heat roller i Lower separation pawl

21

22

23

24

25

26

27

28

29

30

31

32

33

3 – 3

4. Switches, sensors, detectors (The SF-2214 as the typical example)

4 5 6 7

3

2

12

13

11

9

14

10

No.

Abbreviation

1 POD

2 MHPS

3 SDSW

4 SPOD

5 SPPD

6 SPFD

7 LHPD

8 PWD

9 PPD

F CPED1

G CPED2

H CSPPD

I CSDSW

J 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

Option tray paper empty sensor

Option tray paper path/empty sensor

Option tray paper feed cover open/close sensor

Paper sensor for Manual paper feed unit

(only single Manual Paper feed unit)

Type

Transmission photo sensor

Lead switch

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.

H when paper is sensed.

L when the cover is open.

3 – 4

5. Clutches, solenoids (The SF-2214 as the typical example)

1 2 3

No.

Abbreviation

1 SRRC

2 SPM

3 PSPS

4 RRC

5 TRC

6 MPFS

7 CPFC1

8 CPFC2

9 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

Option tray paper feed clutch

Multi paper feed clutch

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

7

6

4

9

5

3 – 5

6. Motors (The SF-2214 as the typical example)

1 8 2 3 4

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

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 stepping

DC brushless

DC synchronous

DC brushless

3 – 6

7. PWBs (The SF-2214 as the typical example)

8 2 1 4 10 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

F RE 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

Speed detection for SPF motor

3 – 7

[4] UNPACKING AND INSTALLATION

1. Packing drawing

List of packing materials and accessories

Packing case

SPF tray

SPF cover protection material

Body

Name

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

Q’ty

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 conditions): The best suitable conditions for machine operation:

20˚C

∼

25˚C: 65

5%RH

(Temperature/humidity range): 15˚C

∼

30˚C, 20%

∼

85%

65% for 35˚C

% RH

Humidity

15 30 35 ˚C

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.

15cm

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 horizon-

tally.

(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-2114, SF-2214]

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.

[In the case of SF-2014]

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 Supply developer.

Press and hold the developer cartridge in place and remove the developer cartridge sheet by pulling forcefully.

(Developer will be supplied.)

(3) Developer setting

1 Open the front cabinet.

Press the front cabinet open buttons in the right and the left sides of the copier, and open the front cabinet.

Front cabinet open button

Sheet

(4) Toner supply

1 Remove the toner cartridge.

Slowly turn the toner cartridge clockwise and remove it.

2 Open the toner cartridge.

While pressing the toner cartridge release lever (B), open the toner cartridge.

Release lever (B)

2 Shake the toner cartridge.

Shake the removed toner cartridge up and down a few times.

Toner cartridge

3 Install the developer cartridge.

Insert the developer cartridge along the developer guide.

Check to insure that the developer cartridge is securely locked.

Guide

3 Install the toner cartridge.

Install the toner cartridge along the guide in the copier.

Developer cartridge

4 – 4

Turn the toner cartridge counterclockwise to lock it in position

(6) Accessory attachment

1 Attach the copy tray.

4 Supply toner.

Remove the toner cartridge sheet and supply toner.

(Toner will be supplied.)

Return the toner cartridge to the original position and close the front cabinet.

2 Attach the document tray.

[SF-2214 only]

(5) Toner density sensor level check

1 Turn on the power switch of the copier.

2 Adjust the developer level.

(a) Perform the key operations of simulation 25 sub 2.

0 C

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.

4 – 5

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) No.4/no.5 mirror unit (Mirror base C) lock

[SF-2014]

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)

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

Mirror unit fixing screw

[SF-2114/2214]

1 Turn off the power at the 64% position. Perform locking with the external fitting installed.

Mounting screw A,

1 pc

[SF-2114/2214 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 Grip

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)

Positioning pin

4 – 6

(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 paer tray with both hands and remove it.

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

(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

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

* 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.

Front cover

Upper half

release lever

Connector

4 – 7

6. Optional multi bypass feeder unit

Installation Manual

For use with compatible SHARP copiers.

See SHARP copier Installation Manual to determine suitability.

(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

(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) Rock claw (latch)

Rock claw

(latch)

Positioning pins

Multi bypass feeder unit

2 Close the upper unit of the main copier unit.

4 – 8

[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-2214 only)

Internal structure

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 cassette 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. (The multi paper feed unit (SF-

MF14) is an option.)

In addition to the standard cassette (250 sheets), the optional cassette module (SF-CM14, 250 sheets) can be added.

(Cassette 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

1 When machine has low toner (low concentration) conition, Toner and Carrier (Developer) are transported from toner box to developer box by mixingroller.

Toner box contains Toner and Carrier (Developer)

2 Machine conumed some quantity of toner making copier, but carrier (developer) is not consumed.

Increase in quantity of carrer in the developer box, therefore some quantity of deteriorated carrier overflowed.

3 Deteriorated carrier is transported to deteriorated carrier collection section in the collection container by mixingroller.

Therefore quantity of carrier in the developer box is regulated.

This operation effects on replacement for deteriorated carrier by fresh one.

4 On the other hand residual toner in the OPC drum cartridge units is transported to waste toner collection section in the collection container by transportoller.

The employment of this system elements the need for replacement of carrier in the developer box, resulting in a reduction in servicing time and in servicing costs.

When toner in the toner box is not consumed and the toner density in the developer unit falls below the specified level, the toner lamp lights up to indicate the necessity for replacement of the toner cartridge.

Toner in the toner box is exhausted by about 40K copiers. (7% density copy)

Flow of the new toner

Toner box

(mixture of toner and carrier)

• 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.)

Waste toner collection container

Deteriorated developer

(Automatically discharged to the waste toner collection container)

Residual toner on the photoconductor drum

(Cleaned in section and sent to the waste toner collection container)

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-2014 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

Copy lamp

No. 2 mirror

No. 4 mirror

No. 2/No. 3 mirror base unit

Mirror motor

Mirror home position sensor

Reflector

No. 3 mirror

No. 5 mirror

Copy lamp unit

Lens/No. 4/No.5 mirror base drive motor

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)

No. 1 mirror

Lens

No. 6 mirror

No. 4/No. 5 mirror base unit

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-2014/2114/2214 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)

(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

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 negativelycharged 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

). 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 50

Correction level is initialized by Simulation 46 or by replacing the photoconductor drum.

100 150 200

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.

250 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.

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 77.5 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 ?

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

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

Sensor output =

Reference level

(DSENS) ?

YES

END

5 – 13

7. SPF section (SF-2214 only)

1. Outline

The SPF (Single pass feeder) is a standard provision of the SF-2214, 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

8 3 16

Original transport path and the basic composition

Original takeup roller

Original paper feed roller

SPF PS roller, upper

SPF transport roller

SPF document exit sensor

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

SPFD

Document feed reverse roller

SPF PS roller, lower

CL pulley

Original exit roller

SM rotation

SPFS ON

SPPD ON

SRRC ON

[Exposure]

SPOD ON

[Original exit]

(SPF side)

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.

(Timing chart)

PSW

CPFC1

TRC

RRC

PPD

POD

SPFS

SRRC

SPPD

SPOD

The image lead position is adjusted with Sim-50.

5 – 14

5 – 15

[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

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.

1-3. Separation roller

1 Remove the paper feed unit and remove the separation roller.

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.

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

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.

<Installation>

1 Pass the lens drive shaft through the carriage unit, and set the shaft to the shaft support section of the base plate.

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

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.

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

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.

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

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.

2 Remove two screws C and remove the motor.

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 0.6mm 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.

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 0.6

0.03mm in the range of 30mm width under the DV doctor fixing screw.

0.6±0.03mm

MG

Note: When adjusting, be careful not to scratch the DV doctor.

A

30mm

7 – 2

2. Optical section

A. Adjustments list

Classification

Parts installation position

No.

(1)

(2)

Lens

Mirror

Adjustment content

Copy picture quality (3) Picture image distortion

(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 a b b a b a a 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

—

1.5 mm

Vertical copy magnification ratio adjustment (normal copy)

Vertical copy magnification ratio adjustment (zoom copy)

Horizontal copy magnification ratio adjustment (zoom copy)

Copy image position adjustment

Void area adjustment

Lead edge

Lead edge void area adjustment (SPF mode)

End edge void area adjustment

100 ± 0.8%

100

0.9%

100

0.8%

—

0 −

* For details, refer to the Ref. page.

START

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."

(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

—

— 7-21

Execute Sim26-08 to set the lens reference position set value in the zoom copy mode.

(Zoom model 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

7-11

7-12

7-13

Ref.

page

7-6

7-7

7-14

7-15

7-17

7-18

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.

(Zoom model only)

(4)

Fix the lens center position adjustment rail at the center temporarily.

(5)

Fix No.4/5 mirror position to the center.

Standard setting value in the sim48-1 and 26-8 (Reference)

Lens No.

sim48 sim26-8

Lens No.

sim48 sim26-8

–1

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.

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.

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)

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.)

Change No. 4/5 mirror height balance and adjust vertical image distortion.

Are the enlargement ratio and the copy image size matched ?

(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 ?

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 ?

Set Sim48-2 set value smaller.

YES

Is the copy

image greater than the actual scale ?

Set the Sim48-2 set value greater.

YES

Is the copy image at the center of the copy paper ?

YES

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%.

YES

Compare the scale and the copy image in the paper transport direction.

Set the Sim48-3 set value smaller.

Set the Sim48-3 set value greater.

YES

Are they the same size ?

Is the copy image greater than the actual scale ?

7 – 4

(7)

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.

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 ?

Change the installing position of the exposure adjustment plate to adjust the uniformity.

0 ± 1.0 mm ?

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

Make a 100% copy with Sim50-1.

Set the Sim45 set value to "0."

Is the SPF installed ?

YES

Measure the distance between the copy image lead edge and the copy paper lead edge.

0 ± 1.0 mm ?

Change the Sim50-1 set value

B so that the difference is within the specified range.

(Zoom model)

Change the Sim50-1 set value

A so that the difference is within the specified range.

(Non zoom model)

Is it the zoom machine ? 5

Set the Sim50-1 set values A and B.

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

(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.

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.

(8)-b

0 ± 1.0 mm ?

Make a 100% copy in the document table mode and check the lead edge void area. (Document table mode)

Change the Sim50-1 set value

C so that the difference is within the specified range.

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

Is the SPF installed ?

YES

Use the SPF to make a 100% copy and check the lead edge void area. (SPF mode)

Use a black color document and make a 100% copy on the A4 or

8 1/2" x 14" paper

YES

Change the Sim45-1 set value to adjust the lead edge void area.

YES

End

7 – 5

C. Adjustment contents

(1) Lens a. Lens unit right angle adjustment

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

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

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

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

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

(Zoom model only)

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.

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 anfocur copy in the enlargementor redaction 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

There are following two types of image distortion.

* Horizontal image distortion

7 – 8

* 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

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

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

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 nit 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-R 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

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

Do not move the shaft.

Scanner unit drive pulley

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

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 = 10mm

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

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.

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

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)

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 cop image of improper focus is obtained.

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

3.6

(Copy)

Check the corners.

4.5

5.0

5.6

6.3

7.1

8.0

9.0

9.1

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)

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.

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

140

HARDDENCD

STAINLESS

150

Shizuoka

Copy

110

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

→

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

→

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)

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.

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

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 48-2. (C

→

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

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 48-3. (C

→

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

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

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

Y

Hole

(Center)

Exposare adjusting plate

Y Y

Paper lead edge

Li: Lead edge image loss

Lv: Lead edge void area

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

7 – 19

a. Copy image position adjustment (SF-2014/2114)

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-2214, 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 od 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 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.

Necessary tools

* Screwdriver

* Scale

* Test chart

* Black background document

(Copy image position adjustment)

1) Execute simulations 45-1. (C

→

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 SE-

LECTED 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

→

CB)

This simulations is to adjust the copy image position for the paper. One of the set adjustment values is displayed on the

COPIES SELECTED display.

Adjustment value A:

(SF-2114/2214)

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-2114/2214)

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: 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-2014)

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-2114/2214)

Adjustment value C

(SF-2214 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

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 models without zoom functions.) (Zoom model only)

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 models without zoom functions.)

10) Execute simulations 50-1 to make several copies at each of

129% and 64%. (Not required for the models without zoom functions.) (Zoom model only)

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.)

(Zoom model only) 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.

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 mm

1/2mm

1 0 2 0 30

Scale image lead edge

10 20 30 40 50 60 70

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

0±1.0mm

20 30

Paper lead edge

b. Void area adjustment

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 cassette 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 cassette

Manual

Paper feed unit 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

II.

Purpose

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)

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.

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

→

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 SE-

LECTED display.

Press the paper feed unit select button to light the cassette 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:

0 −

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 −

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

→

CB)

The set adjustment value is displayed on the COPIES SE-

LECTED 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.

1/2mm

10 20 30

Black background edge

Paper end edge

Standard:

0 −

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

Auto mode Non-toner-save mode 1

Toner save mode 1

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

Test chart comparison

UKOG-0162FCZZ

DENSITY No.

UKOG-0089CSZZ

DENSITY No.

KODAK GRAY

SCALE

0.1

0.2

0.3

7 8

9 10

0.5 1.9

SHARP CORPORATION

MADE IN JAPAN

Front side

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

Copy mode select key

Copy density adjustment key

7 – 26

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

Copy mode select key

Copy density 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.

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

Copy mode select key

Copy density adjustment key

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.

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

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

Copy mode select key

Copy density 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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

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.

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.)

Copy mode lamp

Copy density display lamp Copy sheet display

Lighting

1 2 3 4 5

122%

115%

100%

81%

70%

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

N.TS

Normal

TS N & P

Photo N.TS

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

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

Not copied

Copied

N.TS

Auto

1 2 3 4 5 6 7 8 9 10 W

Slightly copied

Not copied

1 2 3 4 5 6 7 8 9 10 W

Slightly copied

Not copied

TS A & P

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

(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

PHOTO

NORMAL

MAIN CORONA VOLTAGE

(V)

–5.3Kv

MAIN CORONA UNIT

MAIN CORONA GRID

VOLTAGE (V)

780

–5.3Kv

780

478

660

7 – 30

TRANSFER CORONA

VOLTAGE (V)

–5.3Kv

SEPAREATION CORONA

VOLTAGE (V)

+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 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?

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

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?

Press the clear key

All the lamps and indicators on the operation panel go off.

Ready for entry of the main simulations number

Press the clear key

YES

End

YES

Is the main code same?

Enter a new main code

The main code is display on the copy quantity display

Is the sub code display?

YES

Press the clear key

8 – 1

4. Purpose list

Purpose

Adjustments

Setting

Counter

Trouble cancel

Section

Paper feed section

Optical section

Developer

Process

SPF

Specifications

Paper feed section

Fuser section

Process

Copy count

Maintenance

Drum count

Operation check General

(Aging mode)

Paper feed section

Optical section

SPF

Operation panel

Fuser section

Process

Developer section

Main Sub

51 2

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)

Resist quantity adjustment

Option setting

Destination 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

Maintenance counter display

Maintenance preset counter display

Total counter display

Drum counter display

Maintenance counter value reset

Maintenance cycle setting

Drum count value reset

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

Cancel of troubles other than U2

U2 trouble cancel

Ref. page

8-3

8-4

8-5

8-6

8-7

8-3

8-7

8-8

8-9

8-12

8-10

8-11

8-12

8 – 2

Purpose/kind

Adjustment

Section

Paper feed section

Optical unit

5. Details of simulations

Main code

Sub code

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.

@ The time interval can be set. The greater the time interval is, the greater the contact pressure be-

PPD

( SPPD)

TRC

(SPFC) tween 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

Sub code

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

Exposure level

Sim No

5 46-1

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)

Exposure

Copy density

Copy lamp application voltage

Ref. page

7-26

51 6

Small Dark

MIN 40V (80V)

( ): 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).

′

– 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

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

[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

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 [%]

7-15

7-167

8 – 5

Purpose/kind

Adjustment

Section

Optical unit

Developer unit

Main code

Sub code

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).

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

RRC ON

Document lead edge position

Mirror unit scan start

RRC ON

Reaching the document lead edge position

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

Sub code

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

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.

SF2014/2114

SF2214 (SPF)

The code corresponding to the above is set.

(Note) Enter the code corresponding to the installed option. If a wrong code is entered, a trouble may occur. (Refer to the self diag.)

7-30

7-18

8 – 7

Purpose/kind

Setting

Section

Specifications

Paper feed unit

Fuser unit

Main code

Sub code

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 number

Normal machine Zoom machine

Japan

U.K.

AB series other than U.K.

USA

Inch series other than USA

Indonesia

Destination

Ref. page

Used to set the manual paper feed mode. (SF-2014 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

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

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)

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

→

95 * : Standard set value

8 – 8

Purpose/kind

Setting

Counter

Section

Process

Copy count

Maintenance

Drum count

Main code

Sub code

Contents

Description

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

Correction mode

Optical system dirt correction enable

Photoconductor drum membrane wear correction enable

Set the total of codes of above modes.

Factory setting is "6."

Used to check the maintenance count value.

(The count value of the installed DV unit is displayed.)

(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).

(Operation/procedure)

The currently set maintenance cycle value is displayed dividedly by 2 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 total count value.

(Operation/procedure)

The total count value is displayed dividedly by 2 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 drum counter value inside the installed OPC drum unit.

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.

Maintenance lamp ON cycle

Every 10,000 copies

Every 20,000 copies

Every 40,000 copies

Lamp not ON

Set to "2" when shipping.

Drum count data is reset.

Photoconductor lamp ON cycle

Every 40,000 copies

Lamp not ON

Ref. page

8 – 9

Purpose/kind

Operation check

Section

Paper feed unit

Main code

Optical unit 1

Sub code

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

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)

Option tray open/close detector (CPED2)

Option tray detector (OCSD)

Mult manual paper feed unit defects

Single manual paper feed unit defects

Jam lamp

Upper tray lamp

Lower tray lamp

SPF Jam lamp

SPF lamp

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

Sub code

Contents

Description

Used to check the operation of the optical unit and its control circuit.

(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)

SPF resist sensor (SPPD)

Display lamp

Toner empty lamp

Jam lamp

Document exit sensor (SPOD) 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

Trouble code resets

Section

Process

Developer unit

Gereral

(Aging mode)

Main code

Sub code

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.

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

5-12

8 – 12

6. User simulation

User simulation allows the user to change or cancel the factory settings easily according to his or her desirable operating environment on the following functions.

(1) Functions which can be reset or canceled by

User simulation.

Auto clear function: Time for returnign to the standard state can be changed or canceled. (Standard state: copy quantity "0," 100% AE mode)

Pre-heating function

(Power saving):

Time to enter the pre-heat mode and the auto power shut-off mode can be changed or canceled. (Refer to [1]-4 New functions, page 1-

1.)

Stream feeding mode: When set to this mode, the document feed lamp blinks for about 5 sec after copying with the SPF. If a document is set again, copying is started automatically.

(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/ photoconductor/ toner supply warning LED

Blink

Copy quantity display

Blink 1

Blink 1 1

Blink 1 2

Blink

OFF

1 2

Returns to copy quantity display.

Blink

(

(3) User simulation code table

Program

Auto clear time setting

Pre-heat mode setting and time setting

Sim code





Selection code: setting content





: OFF





: 30 sec.





: 60 sec.





: 90 sec.





: 120 sec.





: OFF





: 30 sec.





: 60 sec.





: 90 sec.





: 120 sec.

Factory setting

Print LED

OFF

Auto shut-off mode setting and time setting

Program

Stream feeding mode setting and time setting

( * Machines with

SPF installed only.)

Sim code





Selection code: setting content





: OFF





: 2 min.





: 3 min.





: 5 min.





: 10 min.





: 15 min.









: ON





: OFF

Factory setting

OFF

—

8 – 13

[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?

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.

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

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

9 – 2

Error code

Main Sub

L4 1

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

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

8-12

9 – 4

Error code

Main Sub

U2 4

Item

Remedy

5 Content

Detail

Cause

Remedy

EU Content

Detail

Cause

Remedy

Light

Content

Detail

Cause

Remedy

Content

Detail

Cause

Remedy

Light Content

Detail

Cause

Remedy

Blink 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

Developer detection trouble

1) The toner density sensor input (main PWB) voltage is below 0.5V.

1) Toner density sensor and its input circuit (main PWB) trouble

2) Developer seal is not removed.

Use simulation 25-2 to check the following items:

1) Toner density sensor and its control circuit (main PWB)

2) Developer seal

9 – 5

Ref. page

8-12

8-6

8-10

8-6

Error code

Main Sub

Paper empty

Toner empty

JAM

Light

Blin

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 supply trouble

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 density fall

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

OPC drum replacement

SPFJAM

Light

Item

Content

Detail

Blink Content

Detail

Cause

Remedy

Content

Detail

Cause

Remedy

Description

OPC drum replacement timing alarm

OPC drum replacement after copying 2,000 sheets.

OPC drum replacement

OPC drum replacement timing is reached.

The OPC drum unit counter exceeds the specified copy quantity (40K).

(Note) The OPC drum counters are in the main PWB RAM and in the OPC drum. The two counters normally coincide each other. If there is any discrepancy between them, the data in the EEPROM in the OPC drum takes priority.

Replace the OPC drum unit.

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

8-9

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) 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.

1 4 1 5 1 6

9 – 7

[10] SERVICING AT MEMORY

TROUBLE AND MAIN

CONTROL PWB REPLACEMENT

1. General

The EEPROM in the control PWB and the EEPROM in the OPC drum unit are storing 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 EEPROM in the OPC drum unit 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

Replace the

EEPROM in the main control PWB

Is the

EEPROM in the main control

PWB defective?

YES

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.

10 – 1

Is the toner density reference value recorded?

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?

YES

Use Sim 46-1/51-6 to set the copydensity adjustment value

Is the vertical copy magnification ratio adjustment value recorded?

YES

Use Sim 48-1 to the vertical copy magnification ratio adjustment value

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?

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?

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

10 – 2

Are the image lead edge position adjustment value and the resist roller ON timing adjustment value recorded?

YES

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?

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?

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?

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

Contents

Main code Sub code Set value Description

51 2

26 8

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

46 1

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

Specifications

Fuser unit

Main code

Sub code

Default value

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

Specifications setting by destination

Normal machine

Code No.

Zoom machine

Japan

U.K.

AB series other than U.K.

U.S.A.

Inch series other than U.S.A.

Indonesia

Destination

Ref. page

8-3

7-16

7-20

7-26

7-15

7-16

7-19

4-5

7-18

8-3

7-28

8-7

8-8

0 Setting of the main motor operation mode in warming up.

Code

No.

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.

8-8

185˚C Fusing temperature set value

Fusing temperature setting value in the power save mode

8-8

10 – 5

Purpose/kind

Counter

Section

Total counter

Trouble cancel

Main code

Sub code

Default value

Contents

Description

Used to confirm the total counter value.

Used to reset the maintenance counter.

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

8-9

8-12

[11] MAINTENANCE

▲ Replacement/Installation F Cleaning ✭ Lubrication

✕ Check (Clean, replace, or adjust as required.)

Developer

Drum

Transfer

Fusing

Optical

Transport

SPF

Other

Content

Developer (New two-component developing system)

Toner supply

DV seal

Drum main charger (Case, saw teeth)

Screen grid

Drum separation pawl

Cleaning blade

Toner reception seal

Transfer charger wire

Separation plate (Half-etching)

Transfer charger case

Fuser lower CL roller

Fuser upper heat roller

Fuser bearing

Fuser gears

Fuser lower heat roller

Thermistor

Fuser upper separation pawl

Fuser 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 roller in each section

Suction belt (Only for the specified destination)

Paper transport section paper guide

Paper feed roller

Paper transport roller

Original transport guide

OC matt

Gear section (Driving)

Blank lamp. descharge lamp

Ozone filter

Picture quality

40K

✭

▲

✭

▲

✭

▲

✭

▲

80K

SRU specifications

120K 160K 200K 240K

Replace at the same time as toner supply by small quantity. (No periodic replacement)

Replacement at every 4K by the user

✕ ✕

▲ ▲

▲

✭

▲

✭

▲

✭

[12] ELECTRICAL SECTION

1. System block diagram

3 2

LHPS

AE PWB MIR.M

MHPS

2 3

BL PWB

DL PWB

MFD1

MFD0

2 6 2

DV UNIT SPFM

Personal counter

2 Main circuit PWB

CPU/memory/driver

Operation PWB

3 6

DC power supply circuit

AC circuit PWB

AC power

CRU PWB

Power trans

Main switch

Dry heater

2. System operation at power ON

Power ON

Initial setting

Memory transfer

Trouble

JAM

+32V

+24V

+5V1

+5V2

GND

Door open

BIAS

SHV

MHV

THV

GRID

+30V

1 3 6

SPF PWB

Main motor

PWB

Lower unit PWB

1 3 6

High voltage circuit PWB

1 6

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

RRC

PSPS

POD

MPFS

MPFC

LUM

CPFC1

PWD

PPD

LUPD

CPED1

CPED2

CSDSW

CSPPD

CPED2

RE PWB

SPFD

SPM

SPFC

SRRC

SPPD

SDSW

SPOD

TRC

VFM

3 6

12 – 1

3. Main circuit

(1) Block diagram

Lower unit control

Operation panel

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

Heater lamp

Copy lamp

Power relay

Blank lamp

Discharge lamp

Toner motor

IC109

IC105

Q102 Q103 Q109

Q108

Q110

IC112

Thermistor

Q111

IC112

IC111

Q107

RAM

IC103

CPU

IC110

CPU

RAM

Q106

+32V +24V +5V1 +5V2 FW GND

IC113

+5V2

IC112

Q101 IC101

DC power section

(2) CPU (IC110) M37702

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

Pin arrangement

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/

P41/RDY

Q105

Driver

(Invertor)

IC102

IC104

IC105

IC108

Driver

IC107

IC111

Counter

Transport clutch

Separation solenoid

Multi bypass paper feed clutch solenoid

Lens motor

SPF motor control

SPF paper feed

transport clutch

Main motor control

External interface

Mirror motor

AE sensor

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

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

CPU: M37702 (IC110) pin signals

Pin No.

Vss

P33

P32

P31

P30

P27

P26

P25

P24

P23

P22

P21

P51

P50

P47

P46

P45

P44

P43

P42

P41

P40

BYTE

CNVss

RESET

OUT

P12

P11

P10

P07

P06

P05

P20

P17

P16

P15

P14

P13

Port

P70

P67

P66

P65

P64

P63

P62

P61

P60

P57

P56

P55

P54

P53

P52

Vss

PNC

TRC

DVCUT

DVF

TMb

TMa

LEMT0

LEMT1

LEMT2

LEMT3

MPFC

PSPS

SCLK

SDAT

LHPS

IMP

SPFM

VFM

CFM

POD

BYTE

CNV

RESET

OUT

MPFS

MFD1

MFD0

MRPS

MRMT0

MRMT1

MRMT2

MRMT3

SRPL

SRRC

SPFC

SME

Signal name IN/OUT

AES IN

IN1

IN0

MMRE

FWS

MHPS

AEG2

AEG1

OUT

IN/OUT

SMPWM

AEG0

CLPWM

MMPWM

BLPWM

IN/OUT

OUT

IN/OUT

OUT

—

H/L

Analog input signal (AE sensor)

Lower unit serial parallel IC input 2 port

Description

Main motor timer input

Power zero cross pulse detection signal

Mirror home position detecting signal ("HIGH at Home position)

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)

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

Developer fuse cut

Developer fuse (Not use)

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

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

P86

P85

P84

P83

P82

P81

P80

Vcc

AVcc

REF

Vss

P77

P76

P75

P74

P73

P72

P71

Port

P04

P03

P02

P01

P00

P87

Pin No.

OP-CLK

OP-LATCH

UN-DATA

UN-CLK

UN-LATCH

Vcc

AVcc

REF

Vss

Signal name IN/OUT

SMG

SPPD

OUT

KEY3

KEY1

KEY0

OP-DATA

OUT

—

OUT

—

OUT

ANS

MBT

CLV

RTH

CRUT

DVC

TCSA

H/L

—

Description

Transport motor gain signal

Paper entry detecting 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)

Analog input signal (CPU destination setting)

Analog input signal (Developer color detection)

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

=+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

C106

0.1uF

IC113

VCC

NC /RESET

CAP GND

M51953BL

5V2

R145

2.4kJ

RESET1

C135

22000PF RESET2

RESET

CPU

(IC110)

12 – 5

(4) Heater lamp control circuit

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

R147

10K

D105

MA700

R146

56KJ

VAREF

R149

7.5KJ

R150

4.7KJ

IC112C

NJM2901M

FTH

IC102

GND

COM

ULN2003A

24V

Q110

DTA114YK

47K

10K

47K

10K

R105

2.2KJ 1/2W

24V

Q111

DTA114YK

RTH

CR501

C507

GATE

R504

T2 TD501

R503

SSR501

Heat roller

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)

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.

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

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

Phase A

+24V

Phase A

Phase B Phase B

I/O

Output

B +24V B

LOAD

Stepping motor time chart

Drive signal

(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

R152

200KJ

IC111D

LM324

C 149

33P F

R 157

5.5KF

R 156

5.6KF

R153

10KJ

R155

30KF

IC111A

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

IC104

IN1

IN2

GND

TA7291S

TMa

TMb

C102

10UF35V

Internal circuit

+5V

2 8

+24V

REG

Protection circuit

(Heat insulated)

TMa

TMb

+24V

9 1

TMa

TMb

Truth value table

Input

TMa

Å : High impedance

TMb

GND

TMa

Output

TMb

Mode

Stop

CW/CCW

CCW/CW

Brake

(9) Reset IC (IC113)

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.

External view 5P5

5 Output

4 Delay capacity

3 GND

2 NC

1 Power

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

5µA reference

1.25V

GND Delay capacity

Output

4.25V

0.65V

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.

R165

15KF

R166

30KF

R160

47KJ

R161

10KJ

C131

0.01µF

IC1128

NJM2901M

D103

1SS133

R167

15KF

C107

0.47µF

50V

24V

5V2

BR102

10KJ x 4

IC1128

NJM2901M

R166

30KF

BR102

10KJ x 4

C138

1000P

V3'

R169

200KF

R166

30KF

R170

82KF

Q107

CLPWM

DTC114YK

5V2

R171

3.9KF

ZD103

HZ59A3

IC1120

NJM2901M

A 5V2

CLPWM

R202

4.7KJ

C133

0.047µF

R173

1KJ

R174

1KJ

D102

1SS133

R175

10KJ

Q108

2SC2411K

Q109

DTA114YK

R105

2.2KJ

1/2W

FWS

CLV

12 – 9

The relationship between the CLV and the pulse ON period is as shown in the figure below:

CPU output (CLPWM)

8 or 10 msec

Pulse ON (Changeing)

(V)

CLV

60Hz 50Hz

+5V

VCL

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 coy 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

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.

Block diagram

VD (+10V)

LED

S IN

OUT

S OUT

BEO

VD CLK LATCH STROBE

VD (+5V)

DATA

CLK

Main control circuit

LATCH

ENABLE

32 bit Shift Register Sout

32 bit Latch

Driver ON/OFF Control

Driver

01 032

GND

VD (+5V) VD (+10V)

DC power circuit

Operation

Clock

1 8

5V Data signal

Latch signal

Strobe signal

Output LED

LED light up at LOW level (0V)

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 lighted 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

MDL0

MDL1

2m sec

RDL1-ON PEL-ON

LC7935

Cycle 4 msec 1/2 duty

GND

5. Power section

Each AC voltage generated by the power trans 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

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

GND(VH)

CNE-8

CNE-5

GND(VD)

CNE-6

GND(FW)

12 – 13

• In the main PWB unit

L-7

32V

L-8

32V

L-5

P-GND

L-6

P-GND

L-3

5V1

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

IC101

MC7805CT

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

5V2

32V

FB105

32V

24V

12 – 14

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