Canon 3260 Printer User Manual

SERVICE
MANUAL
REVISION 0
JAN. 1999
COPYRIGHT  1999 CANON INC.
RY8-1390-000
CANON LBP-3260 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
COPYRIGHT © 1999 CANON INC
Printed in Japan
Imprimé au Japon
Use of this manual should be
strictly supervised to avoid
disclosure
of
confidential
information.
Prepared by
PERIPHERAL PRODUCTS QUALITY ADVANCEMENT DIV.
PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT.
CANON INC.
5-1, Hakusan 7-chome, Toride-City, Ibaraki-Pref. 302-8501, Japan
PREFACE
This Service Manual contains basic information required for after-sales service of the laser beam
printer LBP-3260 (hereinafter referred to as the "printer"). This information is vital to the service technician in maintaining the high print quality and performance of the printer.
This manual consists of the following chapters:
Chapter 1: Product information
Features, specifications, operation, and installation
Chapter 2: Operation and Timing
A description of the operating principles and timing sequences of the electrical and
mechanical systems.
Chapter 3: The Mechanical System
Explanation of mechanical operation, disassembly, reassembly and adjustment procedures
Chapter 4: Troubleshooting
Troubleshooting procedures, reference values and adjustments, maintenance and
servicing, etc.
Appendix:
General timing chart, general circuit diagram, etc.
Information in this manual is subject to change as the product is improved or redesigned. All
relevant information in such cases will be supplied in the Service Information Bulletins.
A thorough understanding of this printer, based on information in this Manual and Service
Information bulletins, is required for maintaining its performance and for locating and repairing
the causes of malfunctions.
DTP system
This manual was produced on an Apple PowerMacintosh 9500/233 personal computer and output by an
Apple LaserWriter 16/600 PS laser beam printer; final pages were printed on DAINIPPON SCREEN MFG
CO. LTD DT-R3100.
All graphics were produced with Macromedia FreeHand (J), and all documents and page layouts were
created with QuarkXPress (E).
The video images were captured with SONY degital video camcorder and Radius PhotoDV capture board
system, and modified with Adobe Photoshop (J).
CONTENTS
CHAPTER 1 PRODUCT INFORMATION
I.
FEATURES ............................ 1-1
VI. MAINTENANCE AND
II.
SPECIFICATIONS .................. 1-3
SERVICING BY THE
III.
SAFETY INFORMATION .... 1-6
CUSTOMER ........................... 1-18
IV.
PARTS OF THE PRINTER ...... 1-7
VII. OPERATION .......................... 1-21
V.
INSTALLATION ...................... 1-9
CHAPTER 2 OPERATION AND TIMING
I.
BASIC OPERATION ................. 2-1
B. Laser Control Circuit......... 2-27
A. Functions .......................... 2-1
C. Scanning System............... 2-30
B. Basic Operation Sequences 2-2
II.
IV.
IMAGE FORMATION SYSTEM . 2-32
C. Power On Sequence ........... 2-3
A. Outline .............................. 2-32
ENGINE CONTROL SYSTEM.... 2-4
B. Printing Process ................ 2-34
A. DC Controller Circuit ........ 2-4
V.
PICK-UP/FEED SYSTEM ......... 2-42
B. Fixing Control ................... 2-10
A. Outline .............................. 2-42
C. High-Voltage Power
B. Paper Pick-up .................... 2-45
Supply ............................... 2-16
C. Fixing and Delivery Unit.... 2-57
D. Power Supply..................... 2-19
D. Paper Jam Detection ......... 2-59
E. Video Interface Control ..... 2-21
VI. OVERALL CONTROL SYSTEM . 2-61
F. Other Controls .................. 2-23
A. Video Controller PCB......... 2-61
III. LASER/SCANNER SYSTEM ..... 2-26
B. Control Panel .................... 2-65
A. Outline .............................. 2-26
C. Self Test ............................ 2-66
CHAPTER 3 THE MECHANICAL SYSTEM
IV.
MAIN PARTS .......................... 3-15
I.
PREFACE ............................... 3-1
II.
EXTERNALS ........................... 3-2
A. Locations .......................... 3-15
A. Locations .......................... 3-2
B. Multi-purpose Tray Pick-up
B. Control Panel Unit............. 3-7
Roller ............................... 3-16
III. MAIN UNITS ........................... 3-8
C. Separation Pad .................. 3-16
D. Pick-up/Feed/Separation
A. Laser/Scanner Unit ........... 3-8
B. Drive Unit ......................... 3-8
Rollers ............................. 3-17
C. Pick-up Unit ...................... 3-9
E. Registration Lower Roller .. 3-17
D. Multi-purpose Tray Pick-up
F. Transfer Charging Roller ... 3-18
Unit.................................. 3-12
G. Fixing Roller Heater .......... 3-18
E. Registration Roller Unit .... 3-12
H. Fixing Upper Roller ........... 3-19
F. Delivery Unit ..................... 3-13
I. Fixing Lower Roller ........... 3-22
G. Fixing Unit ........................ 3-13
J. Cleaning Roller.................. 3-23
H. Feed Unit .......................... 3-14
V.
SWITCHES/SENSORS ............. 3-24
A. Locations .......................... 3-24
VI. CLUTCHS/SOLENOIDS ........... 3-31
B. Thermoswitch ................... 3-25
A. Locations .......................... 3-31
C. Door Switch ...................... 3-25
B. Multi-purpose Tray Pick-up
D. Upper Cassette Paper-size
Clutch ............................... 3-32
Sensing Switch/Lower Cassette
C. Feed Clutch....................... 3-32
Paper-size Sensing Switch . 3-26
D. Registration Clutch ........... 3-33
E. Thermistor ........................ 3-26
E. Lifting Plate Solenoid ........ 3-33
F. Registration Paper Sensor . 3-27
F. Cassette Pick-up Solenoid . 3-34
G. Pick-up Unit Paper Sensor . 3-28
G. Face-up Solenoid Unit ....... 3-34
H. Pick-up Unit Door Sensor .. 3-28
VII. MOTORS/FANS ...................... 3-35
I. Lower Cassette Sensor/
A. Locations .......................... 3-35
Upper Cassette Sensor/
B. Main Motor........................ 3-36
Lower Cassette Paper-level
C. Pick-up Motor.................... 3-36
Sensor 1/Lower Cassette
D. Fans ................................. 3-37
Paper-level Sensor 2/Upper
VIII. PCBS ...................................... 3-41
Cassette Paper-level Sensor 1/
A. Locations .......................... 3-41
Upper Cassette Paper-level
B. Video Controller PCB Unit . 3-42
Sensor 2/Lower Cassette
C. DC Controller PCB ............ 3-43
Paper-out Sensor/Upper
D. Pick-up PCB ..................... 3-44
Cassette Paper-out Sensor . 3-29
E. Multi-purpose Tray PCB ... 3-44
J. Multi-purpose Tray Paper
Sensor /Lifting Plate
Position Sensor ................. 3-29
K. Face-down Tray Paper Full
Sensor /Face-down Tray
Delivery Sensor /Fixing
F. Switch/Sensor PCB .......... 3-45
G. High-voltage Power Supply
Unit .................................. 3-47
H. Cassette Paper-size Sensing
PCB .................................. 3-47
I. Power Supply ................... 3-48
Unit Delivery Sensor ......... 3-30
CHAPTER 4 TROUBLESHOOTING
I.
PREFACE ............................... 4-1
A. Malfunction Diagnosis
Flowchart ......................... 4-1
B. Initial Check ..................... 4-4
II.
TROUBLESHOOTING .............. 4-21
VII. MEASUREMENT AND
ADJUSTMENT ........................ 4-28
IMAGE DEFECTS.................... 4-8
A. Mechanical Adjustment ..... 4-28
TROUBLESHOOTING .............. 4-14
V.
VI. MALFUNCTION STATUS
C. Test Print .......................... 4-5
III. PAPER JAMS
IV.
TROUBLESHOOTING .............. 4-20
B. Electrical Adjustment........ 4-29
C. Variable Resistors, LEDs,
PAPER TRANSPORT
Test Pins, Jumpers and
TROUBLESHOOTING .............. 4-18
Switches on PCBs .............. 4-30
MALFUNCTION
VIII. MAINTENANCE AND
SERVICING............................. 4-35
Visit .................................. 4-36
A. Periodic Replacement
E. Standard Tools .................. 4-38
Parts ................................ 4-35
F. Special Tools ..................... 4-39
B. Expected Service Life of
G. Special Tools (printer driver
Consumable Parts.............. 4-35
tester) Explanation........... 4-40
C. Periodic Service ................ 4-35
H. Solvents and Oil List ......... 4-47
D. Cleaning during a Service
IX. LOCATION OF CONNECTORS . 4-48
APPENDIX
I.
GENERAL TIMING CHART ...... A-1
III. LIST OF SIGNALS ................... A-5
II.
GENERAL CIRCUIT DIAGRAM
IV.
A-3
MESSAGES TABLE ................. A-11
CHAPTER 1
PRODUCT INFORMATION
I.
FEATURES ............................ 1-1
VI. MAINTENANCE AND
II.
SPECIFICATIONS .................. 1-3
SERVICING BY THE
III.
SAFETY INFORMATION .... 1-6
CUSTOMER ........................... 1-18
IV.
PARTS OF THE PRINTER ...... 1-7
VII. OPERATION .......................... 1-21
V.
INSTALLATION ...................... 1-9
CHAPTER 1
I. FEATURES
1. High speed printing
Equipped with Motorola's PowerPC 603e, the printer is capable of printing about 32 pages per
minute (A4/Letter).
2. Superior print quality
Combination of high resolution printing at 600 DPI and the use of super fine toner offers clear
print images.
3. Duplex printing
With the optional duplexing unit installed, the printer can print on both sides of paper.
4. Continuous printing
With the optional paper deck installed in the printer in addition to the standard equipped multipurpose tray and upper and lower cassettes, up to about 3,100 sheets of paper (75g/m2) can be
loaded, enabling continuous printing in large volume.
5. 6-way paper pick-up
Optional 2x500 sheet paper deck and envelope feeder in addition to the standard equipped
multi-purpose tray and upper and lower cassettes offer 6-way paper pick-up. The printer can
change the paper pick-up source automatically according to the paper type in addition to the
paper size.
6. Delivery
With the optional staple stacker installed in addition to the standard face-down tray, up to 2,300
sheets of A4 or Letter size paper (75g/m2) can be delivered (simple stacking).
7. Various delivery methods
With the optional sorter attached to the printer, paper can be delivered in 4 modes: mail box, job
separator, stacker and collator.
8. Memory saving technology
Memory Reduction Technology accomplishes printing at 600 DPI with standard equipped memory (8 MB). It also decreases errors, such as memory over flow, and provides stable printing.
9. Energy saving/Toner saving
The printer cuts off the power to the fixing heater when it remains idle for a specified length of
time. It can also reduce toner consumption by selecting the economy mode to print light images
with less toner.
10. Automatic emulation switching
The printer supports Hewlett-Packard's enhanced PCL6. With the optional PostScript ROM
DIMM (Canon Translator Module A-72) installed, the printer can automatically switch between
the standard PCL and Adobe® PostScript® 3™.
11. Automatic interface switching
In addition to the standard built-in bicentronics parallel port, optional interfaces can be
installed in the printer. The printer can automatically switch between the parallel and expansion interface according to which interface port the data sent from the host computer enters.
1-1
CHAPTER 1
This page intentionally left blank
1-2
CHAPTER 1
II. SPECIFICATIONS
A.
1.
1)
2)
3)
4)
5)
6)
Printer
Printer Engine
Type
Printing method
Printing speed (Note 1)
First print time (Note 2)
Wait time (Note 3)
Resolution
Horizontal
Vertical
7) Image formation system
Laser
Scanning system
Photosensitive drum
Charging
Exposure
Toner
Development
Toner supply
Transfer
Separation
Cleaning
Fixing
8) Paper pick-up
Print paper
Paper sizes
Multi-purpose tray
Upper cassette
Lower cassette
Multi-purpose tray
capacity
Cassette capacity
Cassette types
Upper cassette
Lower cassette
9) Print delivery
10) Print tray capacity
Face-down
Face-up
Desktop page printer (console type when paper deck is installed)
Electrophotography
About 32 pages/min. (A4/Letter), about 18 pages/min. (A3)
12.9 sec. or less (A4), 14.3 sec. or less (A3)
90 sec. or less
600 DPI
600 DPI
Semiconductor laser
Rotating six-faced prism mirror (Scanning mirror)
OPC
Roller charging
Laser scanning
Magnetic single-component dry toner
Toner projection development
By EP-72 cartridge replacement (about 20,000 A4- or Letter-sized
prints; with "DENSITY" in "CONFIG MENU" set to "7" and 4% dot
density)
Roller transfer
Curvature/discharge bias
Blade
Heated rollers (600W, 450W)
Multi-purpose tray
Cassette
Envelope feeder EF-9 (option)
2,000 Sheet paper deck PD-82 (option)
2x500 Sheet paper deck PD-82K (option)
Plain paper, colored paper, labels, OHT, envelopes, rough paper,
bond paper, tarnsparency paper, recycled paper, letterhead
Min. 98.4mm(W) × 190.5mm(L) to max. 297mm(W) × 432mm(L)
sized plain paper (64g/m2 to 128g/m2 recommended paper) and
paper mentioned above.
B4, A4, Legal, Letter-sized plain paper (64g/m2 to 105g/m2 recommended paper), and colored paper.
A3, B4, A4, Ledger, Legal, Letter-sized plain paper (64g/m2 to
105g/m2 recommended paper), and colored paper.
10mm stack (about 100 sheets of 75g/m2 paper)
50mm stack (about 500 sheets of 75g/m2 paper)
Universal (accommodates B4, A4, Legal, Letter sizes)
Universal (accommodates A3, B4, A4, Ledger, Legal, Letter sizes)
Face-down/face-up
About 500 sheets (75g/m2 paper)
About 100 sheets (75g/m2 paper)
1-3
CHAPTER 1
11) Duplex print
Auto-duplexing
Manual duplexing
(Note 4)
12) Environment
Temperature
Humidity
Air pressure
When duplex unit (option) is installed, and plain paper (64g/m2 to
105g/m2 recommended paper) only.
Plain paper (64g/m2 to 128g/m2 recommended paper) on multipurpose tray only.
10 to 32.5°C
20 to 80%RH
760 to 1013hPa (560 ~ 760mmHg/equivalent to 0 ~ 2,600m above
the sea level)
13) Maximum power
consumption
About 1,220W (20°C room temperature, rated voltage)
14) Noise level (Officially announced level based on ISO 9296)
Sound power level (1B=10dB)
6.9B or less (printing)
5.3B or less (standby)
Sound pressure level
54dB or less (printing)
(Bystander position)
38dB or less (standby)
15) Dimensions
566 (w) × 520 (D) × 540 (H) mm (excluding some projections)
16) Weight
About 50kg (printer)
Aabout 3.4kg (cartridge)
17) Line voltage requirements
220 to 240V (-10%, +6%) 50/60Hz (±2Hz)
18) Options
Duplex unit DU-82, envelope feeder EF-9, 2000 sheet paper deck
PD-82, 2x500 sheet paper deck PD-82K, sorter S-82, stapler
stacker SS-72
Notes: 1. A test print at room temperature of 20°C with rated voltage input.
2. When the printer is in READY state at a room temperature of 20°C, the time from
reception of the PRINT signal from the video controller until an A4 or A3-sized print
is delivered onto the face-down tray.
3. At a room temperature of 20°C with rated voltage input, the time from turning ON
the printer until the end of the WAIT period.
4. When manual duplexing, correct the curl of the print delivered in the face-down tray
before setting it in the multi-purpose tray.
2. Video Controller
1) CPU
2) RAM
3)
4)
5)
6)
ROM
ROM DIMM socket
RAM DIMM socket
Host interface
7) Language
8) Resident fonts
9) Optional fonts
10) Scaler
1-4
RISC processor: Motorola PowerPC 603e
Standard:
8MB
Maximum:
40MB
4MB
2
3
Standard:
IEEE 1284 compliant parallel
Option:
expansion interface (Ethernet, Token Ring)
Standard:
PCL 5e/PCL 6
Option:
Adobe® PostScript® 3™
45 Scalable fonts (MicroType font), 8 Bitmap font
136 fonts
UFST
CHAPTER 1
B.
1.
1)
2)
3)
Option
Hard disk
Memory
Interface
Dimensions
4) Weight
5) Power supply
2.16GB
ATA-3 (IDE)
70 (w) × 12.7 (D) × 100 (H) mm (excluding mounting materials and
connector.)
About 0.15kg
DC5V (supplied from the printer)
Specifications are subject to change with product modification.
1-5
CHAPTER 1
III.
SAFETY INFORMATION
A. Laser Safety
An invisible laser beam is irradiated within the laser/scanner unit.
Since the laser beam can injure the eye if it strikes it, be sure not to disassemble the
laser/scanner unit. It cannot be adjusted in the field, anyway.
The label shown below is attached to the laser/scanner unit cover.
!
DANGER- Invisible laser radiation when open.
AVOID DIRECT EXPOSURE TO BEAM.
CAUTION- INVISIBLE LASER RADIATION WHEN OPEN.
AVOID EXPOSURE TO BEAM.
ATTENTION - RAYONNEMENT LASER INVISIBLE EN CAS D'O UVERTURE.
EXPOSITION DANGEREUSE AU FAISCEAU.
VORSICHT - UNSICHTBARE LASERSTRAHLUNG.WENN ABDECKUNG GEÖFFNET.
NICHT DEM STRAHL AUSSETZEN.
ATTENZIONE - RADIAZIONE LASER INVISIBILE IN CASO DI APERTURA.
EVITARE L'ESPOSIZIONE AL FASCIO.
PRECAUCION - RADIACION LASER INVISIBLE CUANDO SE ABRE.
EVITAR EXPONERSE-AL RAYO.
VARO!
- AVATTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE
LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING! - OSYNLIG LASERSTRÅLNING NAR DENNA DEL ÄR ÖPPNAD.
BETRAKTA EJ STRÅLEN.
ADVARSEL! - USYNLIG LASER STRÅLING,NÅR DENNE ER ÅBEN.
UNDGÅ BESTRÅLING.
ADVARSEL USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES.
UNNGÅ EKSPONERING FOR STRÅLEN.
Figure 1-3-1
B. Toner Safety
Composed of plastic and minute colored components, toner is a non-poisonous substance.
If toner adheres to your skin or clothes, remove as much of it as possible with dry tissue
paper, then wash with cold water. If you use hot water, the toner will gel and become difficult
to remove.
As toner easily breaks down vinyl materials, avoid letting toner come into contact with vinyl.
C. Ozone Safety
An infinitesimal amount of ozone gas (O3) is generated during corona discharge from the charging roller used in this printer. The ozone gas is emitted only when the printer is operating.
This printer meets the ozone emission reference value set by Underwriters Laboratory (UL) at
the time it is shipped from the factory.
D. Power Supply Unit Safety
Care is needed as even though the printer switch may be OFF, there is a possibility that a current may still flow on the primary side. Be sure to remove the power plug before disassembly
and assembly of this printer.
1-6
CHAPTER 1
IV. PARTS OF THE PRINTER
A. External Views
1
2
3
4
5
6
7
10
9
8
Figure 1-4-1
11
12
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:
16:
17:
18:
19:
Operation panel unit
Face-down tray
Upper cover
Delivery stopper
Test print switch
Multi-purpose tray
Duplex unit door
Upper cassette
Lower cassette
Power switch
Delivery cover
Face-up tray
Parallel interface connector
Power receptacle
Option interface connector (option)
Expansion board slot
Cleaning brush
EP-72 cartridge
Pick-up unit door
13
16
15
14
Figure 1-4-2
17
18
19
Figure 1-4-3
1-7
CHAPTER 1
B. Cross-sectional Views
1
2
3
4
23 22
21
5
20
6
19
7 8
18
9
10
11
12
17
Figure 1-4-4
1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
Face-up tray
Face-up delivery roller
Face-down delivery roller
Upper fixing roller
Laser/scanner unit
Primary charging roller
Photosensitive drum
Developing cylinder
EP-72 cartridge
Registration roller
Multi-purpose tray pick-up roller
Separation pad
1-8
13:
14:
15:
16:
17:
18:
19:
20:
21:
22:
23:
Multi-purpose tray
Feed roller 1
Feed roller 2
Separation roller
Pick-up roller
Transfer charging roller
Upper cassette
Lower cassette
Lower fixing roller
Duplex deflector
Face-up deflector
13
16
15 14
CHAPTER 1
V. INSTALLATION
A. Notes
This printer is packaged and shipped from the factory after careful adjustments and rigorous
inspections.
When installing the printer, it is important to demonstrate its performance in the same way as
when it passes the factory inspection.
The service engineer must sufficiently understand the performance of the printer, install it
correctly in a location with an appropriate environment, and conduct sufficient checks of the
unit.
B. Location Selection
Before taking the printer to the customer's premises, you should confirm the following conditions at the installation location.
1. Power supply
Use the following power supplies:
• Alternating current (AC): -10%, +6% of the rated voltage
• Power frequency: 50/60Hz±2Hz
2. Operating environment
Install in a location that meets the following conditions:
• Level, flat surface
• Temperature, humidity within the following ranges:
Surrounding temperature: 10to 32.5°C
Surrounding humidity: 20 to 80%RH (relative humidity), without condensation
• Cool, well-ventilated space
Do not install in the following locations:
• Exposed to direct sunlight
If you cannot avoid such a location, hang heavy curtains, etc. to shut out the direct sunlight.
• Near magnets and devices that emit a magnetic field.
• Areas with vibration
• Dusty places
• Near fire or water
3. Installation space
Install the printer a suitable distance from the wall, leaving enough room to operate it (see Figure
1-5-1).
When installing the printer on a desk, etc., be sure that it is large enough to accommodate
the printer's feet (rubber pads) and sturdy enough to hold its weight.
1-9
CHAPTER 1
2300mm
2300mm
834mm
900mm
100mm
1500mm
900mm
2600mm
2600mm
100mm
1500mm
900mm
834mm
1200mm
2600mm
2600mm
100mm
1200mm
Figure 1-5-1
1 - 10
1380mm
1500mm
834mm
CHAPTER 1
C. Unpacking and Installation
Condensation will form on metal surfaces when brought into a warm room from the cold.
Therefore, when moving the printer to a warm environment, leave it packed in its box for at least
an hour to acclimatize to room temperature.
1. Printer
1) Open the printer packaging.
2) Take out the accessories. Confirm that the power cord, cartridge, and face-up tray are
included.
3) The printer weighs approx. 50kg, therefore 4 people may be needed to lift the printer and to
move to the installation area.
4) Take the plastic bag off the printer and peel the tape off each part. Check that none of the
covers were scratched or deformed during shipment.
5) Open the delivery cover, and remove the pressure release spacer from the fixing unit.
6) Open the upper cover, and remove the tape and the packing materials from inside the printer.
7) Pull the two cassettes out of the printer and remove the packaging from the cassette.
2.
1)
2)
3)
Cartridge
Open the bag holding the cartridge and take out the cartridge.
Remove the tape and the black sheet from the cartridge.
Hold the cartridge on each side as shown in figure 1-5-2 and slowly rock it 5 to 6 times to
evenly distribute the toner.
4) Place the cartridge on a flat surface. While holding down on the top of the cartridge with one
hand, grasp the tab with the other and gently pull out the sealing tape.
5) Open the upper cover of the printer, and load the cartridge with both hands. Slowly insert it
until it firmly contacts with the back of the slot.
3. Unpacking and installing the hard disk
Note:
1)
2)
3)
4)
5)
1. Before handling the hard disk, be sure to touch the metal part of the printer to discharge electrical static from you body in order to avoid causing damage to the PCB
by the difference in static charge at that time.
2. When removing the PCB at the back of the printer, be sure not to touch the electrical
parts on the PCB. Make sure not to touch especially the electrical elements.
Open the hard disk packaging.
Remove the pad and then take out the hard disk from its box.
Remove the plastic bag holding the hard disk.
If the optional expansion board is installed in the printer, remove the board.
Loosen the 2 screws at the left back of the printer and pull out the PCB.
1 - 11
CHAPTER 1
6) Remove the 2 screws on the PCB.
Figure 1-5-2
7) Insert the claw of the hard disk into the hole of the PCB.
Hook
Figure 1-5-3
8) Fix the hard disk with the enclosed 2 screws and then connect the connector.
Figure 1-5-4
1 - 12
CHAPTER 1
9) Install the PCB into the printer and fix it with 2 screws.
10) Turn ON the printer switch.
11) Press the On Line key when the printer becomes READY to take the printer off-line.
12) Press the Menu key to select "CONFIG MENU."
13) Press the Item key to select "FORMAT DISK."
14) Press the Enter key.
"+FORMAT DISK -IGNORE DISK" appears in the display.
15) Press the +Plus/-Minus key.
"+REALLY FORMAT -IGNORE DISK" appears in the display.
16) Press the +Plus/-Minus key.
"FORMATTING..." appears in the display, Disk LED lights up and formatting starts.
17) When the printer completes formatting the hard disk, "DISK FMT RESTART" appears in the
display, and the printer restarts automatically.
Power On
READY
Press On Line key
PAUSED
Press Menu key
CONFIG MENU
Press Item key
CONFIG MENU Press Enter key +FORMAT DISK
FORMAT DISK
-IGNORE DISK
Press +Plus/-Minus key
+REALLY FORMAT
-IGNORE DISK
Press +Plus/-Minus key
FORMATTING...
DISK FMT RESTART
Figure 1-5-5
1 - 13
CHAPTER 1
4. Operation confirmation
1) Load paper in the lower cassette.
2) Insert the power plug into the outlet and the printer, then turn the power switch ON.
After the printer enters STANDBY mode, press the test print switch to make a test print.
Check that the density of the output image is correct
3) Clean around the printer and ensure that it is ready for use at anytime.
5. Operation precautions
1) Turn ON the power of external equipment then the printer. Turn the power OFF in the
reverse sequence. If the power of external equipment is turned ON/OFF while the printer is
ON, noise may be transmitted through the connection cable between the external equipment
and the printer, and error may occur on the printer.
2) Turn off the power of both the printer and the external equipment before plugging/unplugging the connector between the two. Doing so while the power is ON could cause malfunctions.
1 - 14
CHAPTER 1
D. Storing, Handling the EP-72 Cartridge
Whether the cartridge is still sealed in its box or installed in the printer, the effect of the natural environment will change it over time regardless of the number of prints. As the progression of
this natural change depends on the storage or installation environment, take sufficient care in
storing and handling the cartridges.
1. Before unsealing the box
When the cartridge is stored in a warehouse, workshop, etc., be sure to keep it within the ranges
shown in Table 1-5-1. Note the following points:
1) Avoid locations in direct sunlight.
2) Do not leave in areas exposed to strong vibration.
3) Do not bump or drop.
Temperature
Table 1-5-1 Storage temperature and humidity conditions
Normal (total storage time ×
9/10)
Severe (total storage
time × 1/10)
High
35 to 40°C
Low
–20 to 0°C
Relative humidity
Temperature change (within
3 minutes or so)
Normal (total storage time ×
9/10)
Severe (total storage
time 1/10)
Air pressure
Note:
0 to 35°C
40°C→15°C
–20°C→25°C
35 to 85% RH
High
85 to 95% RH
Low
10 to 35% RH
345 to 1013 hPa
(460 to 760 mmHg)
Total storage time is the valid time span following the manufacture date displayed on
the cartridge box.
2. After unsealing the box
As an organic photoconductor (OPC) is used in the photosensitive drum, it will deteriorate if
exposed to strong light. As there is toner in the cartridge, be sure to explain to the customer the
need to be careful in handling and storing unsealed cartridges.
a. Storage environment
1) Be sure to store in the aluminum bag.
2) Avoid locations exposed to direct sunlight, near windows, etc. Do not leave them in cars for
any extended period of time as heat can damage the cartridges.
3) Avoid high, low, and changeable temperature/humidity locations.
4) Avoid sites with corrosive gases (pesticides) or salt in the air.
5) Store the cartridge within a range of 0 to 35°C.
6) Do not leave cartridges near CRT displays, disk drives or floppy disks.
7) Store the cartridges out of reach of children.
1 - 15
CHAPTER 1
b. Effective life
Cartridges are effective for 2.5 years following the date of manufacture, which is displayed in an
abbreviated form on the cartridge. The cartridge life span is also displayed (month and year) on
the cartridge box as 2.5 years from the date of manufacture. Cartridges should be used within
their life spans, as image quality will deteriorate after the expiry date.
3. Handling
1) When loading a new cartridge into the printer, or when the toner in an already loaded cartridge hardens and blank spots appear on output images, hold the cartridge at each end as
shown in the below figure and slowly rock it about 45° in each direction 5 to 6 times. This
will evenly distribute the toner, and then reload it into the printer. Do not shake the cartridge
in any other way, as toner may leak from the developing cylinder or the cleaning unit.
Figure 1-5-6
2)
3)
4)
5)
6)
7)
To ensure that toner does not leak and dirty the images, be sure to print 3 to 5 pages of test
patterns after loading the cartridge in the printer.
When transporting the printer, remove the cartridges.
Either insert the cartridge in the aluminum bag or wrap it in a thick cloth to ensure light
does not penetrate it.
Do not leave the cartridge near CRT displays, disk drives, or floppy disks.
The magnetism generated by the cartridge may destroy their data.
As the photosensitive drum is sensitive to strong light, do not expose the cartridge to direct
sunlight or strong light (1500 lux or more). If it is exposed to strong light, blank spots or
black lines may appear on images.
Should this happen, temporarily turn OFF the printer. The distorted images such as blank
spots or black lines are likely to disappear. However, if the drum was exposed to strong light
for a long period of time, it is possible the black lines, etc., will remain.
Do not open the photosensitive drum protective shield by hand nor touch the drum surface.
Do not clean the drum.
Do not place the cartridge on its end or upside down. Always place it with the label side facing upward.
Do not disassemble the cartridge.
1 - 16
CHAPTER 1
Figure 1-5-7
1 - 17
CHAPTER 1
VI. MAINTENANCE AND SERVICING BY THE CUSTOMER
To maintain the optimum performance of the printer, the following maintenance should be performed by the customer.
1. Cartridge
Shake or replace the cartridge as the occasion demands.
2. Transfer guide, registration guide
When replacing the cartridge, clean the transfer guide and registration guide with soft flannel
cloth.
Transfer chargin
roller
g
Registration guide
(metal part)
Transfer guide
(metal part)
Figure 1-6-1
3. Static charge eliminator
When replacing the cartridge, clean the static charge eliminator with the cleaning brush
attached inside the printer.
Transfer charging roller
Static charge eliminator
Figure 1-6-2
1 - 18
CHAPTER 1
4. Fixing unit
When replacing the cartridge, clean the fixing unit following the procedure below.
1) Open the multi-purpose tray and load one sheet of A4 or Letter size paper into the tray.
2) Press the On Line key to take the printer off-line.
3) Press the Menu key to select "PCL MENU."
4) Press the Item key to select "PAGESIZE."
5) Press the +Plus/-Minus key to select either A4 or Letter, and then press the Enter key.
6) Press the Menu key to select "FEEDER MENU."
7) Press the Item key to select "MPTSIZE."
8) Press the +Plus/-Minus key to select either A4 or Letter, and then press the Enter key.
9) Press the Menu key to select "TEST MENU."
10) Press the Item key to select "CLEANING PAGE" , and then press the Enter key. "LOAD PLAIN
A4 (or LETTER) IN MANUAL" will appear in the display and the Continue LED and Form Feed
LED will light up.
11) Press the Continue key to print the Cleaning Page. "LOAD BLANK SIDE UP IN MANUAL" will
appear and the Continue LED will light up.
Load this sheet, this side down, in MPT
Læg dette ark, med denne side nedad, i universalbakke
Laad dit vel met deze kant naar beneden in MPT
Lattaa tämä arkki, tämä puoli alaspäin, MPT:hen
Introduire cette page, ce côté vers le bas, dans le tiroir polyvalent
Legen Sie dieses Blatt mit dieser Seite nach unten in den MPT ein
Caricare questa pagina, con questa facciata verso il basso, nel MDT
Legg i arket med denne siden ned i den manuelle materen
Coloque esta página, com este lado para baixo, no MPT
Cargue esta hoja en MPT, con esta cara hacia abajo
Lägg detta ark med textsidan nedåt på din MPT
Figure 1-6-3
1 - 19
CHAPTER 1
12) Place the printed Cleaning Page into the multi-purpose tray with the printed side face-down.
Figure 1-6-4
13) Press the Continue key to feed the Cleaning Page on the other side of the paper. "LOAD
CLEANING PAGE IN MANUAL" will appear and the Continue LED will light up.
14) Place the Cleaning Page into the multi-purpose tray.
Figure 1-6-5
15) Press the Continue key to feed the Cleaning Page through the printer to clean the fixing unit.
1 - 20
CHAPTER 1
VII. OPERATION
A. The Operation Panel
The operation panel is used to perform basic printer operations, make printer configuration
changes that software applications cannot control, identify available typefaces, and check the
status of the printer.
The operation panel consists of the status indication display, nine indicator lights, and seven
menu and operation keys.
1
4
3
2
5
6
7
Power
Disk
Error
Staple
On Line
Continue
Item
Menu
17
16
15
Form Feed
14
13
Reset
+Plus/-Minus
12
11
8
Enter
Shift
10
9
Figure 1-7-1
· Error indicator: 1
On:
An error has occurred and printing has stopped. Check the display for a message describing the
problem.
Off:
Operation is normal and there is no error.
· Power indicator: 2
On:
The printer is ready to print.
Flashing:
The printer is warming up. Wait until the light stays on before you start printing operations.
Off:
1 - 21
CHAPTER 1
The printer cannot print.
· Continue indicator: 3
On:
Indicates the Continue button may be pressed to exit current condition. For instance, if the message TONER LOW appears in the display panel, press Continue to continue printing but be sure
to change the toner as soon as possible.
Off:
Operation is normal.
· Status indication display: 4
The two-line, 20-digit display tells you what is happening inside the printer and shows you the
menus and settings which can be changed. The display keeps you informed about the printer's
operation status, lets you make menu selections, warns you about problems and identifies
errors.
· Form Feed key: 5
Performs a Form Feed and prints data remaining in the FORM printer. If the Form Feed indicator is on, data remains in the printer (only with PCL). Press ON LINE to take the printer off-line.
Press Form Feed to print the remaining data.
· Reset key: 6
Accesses the RESET menu so you can select RESET PRINTER or RESET MENU. If you choose
RESET PRINTER all resources in the memory (soft fonts, macros, stored page data, and so on)
are erased, but the menu items selected are unaffected. If you choose RESET MENU the factory default values are restored for most menu items.
· Disk indicator: 7
On:
The disk is being accessed (for fonts, etc.).
Off:
The disk is not being accessed.
· Staple indicator: 8
On:
Stapling has been selected for the current print job.
Off:
Stapling has not been selected.
· Enter key: 9
Saves a value you selected for an item in the menu. An asterisk (*) marks the the current default
setting.
· Shift key: 10
Press Shift and another key to access the alternate function of dual-function keys. The two functions on dual function keys are separated by a slash in the key name on the printer control
panel.
· +Plus/-Minus key: 11
With an item name displayed, press to +Plus/-Minus step through the item's values. Press and
hold down Shift then press +Plus/-Minus to step through the values in reverse order. Some item
have a large range of numbers from which to choose a value. For example, for COPIES you can
1 - 22
CHAPTER 1
set a value from 1 to 999. In this case, to rapidly step through the values, press and hold down
+Plus/-Minus.
· Form Feed indicator: 12
On:
Indicates that a page is currently being composed in the printer's memory. To print the page
before it is completed, take the printer off-line and press the Form Feed key.
Off:
No print data is currently stored in the printer's memory.
· Item key: 13
With a menu name displayed, press the Item key to scroll through all the items on the menu
and return to the first item. To scroll back through the items in the opposite direction, press
the Shift and Item keys. Depending on what options you have installed, some items may not
appear.
· Continue key: 14
Restarts printing after the printer displays a message and halts printing. For most situations
after you press Continue, the message clears and printing resumes.
When the multi-purpose tray is used as a manual feed station (when MANUAL FEED=ON),
you have to press the Continue key every time you need to feed a single sheet of paper.
· Menu key: 15
With the printer off-line, press the Menu key to scroll through the menu names and return to
the first menu name. To scroll back through the menu names in the opposite direction, press
the SHIFT and MENU keys. Depending on what options have been installed, some menu names
may not appear.
· On Line key: 16
Takes the printer off-line and back on-line. When the On Line indicator is on, the printer is online and ready to receive data and print. When the On Line indicator is off, the printer is offline and the other keys on the control panel can be used to view and change settings.
· On Line indicator: 17
On:
The printer is on-line (power on, warmed up, and ready to receive data from the host computer
for printing). Before you begin a print job, always check this indicator is on.
Flashing:
The printer is processig a print job. Do not turn the power off, otherwize you may lose print data.
Off:
The printer is off-line. You can now use the printer control panel keys to view and change settings. When off-line, the printer cannot accept data for printing.
1 - 23
CHAPTER 1
B. Operation Panel Menus
You can access the following menus though the operation panel:
·
·
·
·
·
·
·
·
·
·
·
PCL MENU
PS MENU (Note 1)
FEEDER MENU
CONFIG MENU
MEMCONFIG MENU
PARALLEL MENU
LOCALTALK MENU (Note 2)
ETHERNET MENU (Note 2)
TOKEN RING MENU (Note 2)
TEST MENU
LANGUAGE MENU
Notes: 1. Menus that appear after the PostScript option has been installed.
2. Menus that appear after an option has been installed such as Network modules.
1. Accessing and selecting menu items
Follow these steps to access the menus and make selections:
1) Check the operation panel and be sure the JOB indicator is off.
2) Press the On Line key to set the printer off-line. The On Line indicator goes off.
3) Press the Menu key to display the name of the first menu. Press the Menu key until you see
the Menu.
4) Press the Item key to display the name of the first item on the menu. Press the Menu key
until you see the item.
5) Press the +Plus/-Minus key until you display the values you want to change.
6) If you want to change the setting, press the +Plus/-Minus key until the value you want is
displayed. Then press the Enter key.
7) Press the On Line key to set the printer on-line.
Figure 1-7-2 list the Menu Operation Flow.
2. Restoring the default settings
There are several types of default settings:
■
Factory default settings are those set for each menu item at the factory. The printer uses
these settings changed.
■
Temporary default settings are those set by the application software for the current print job.
■
Permanent default settings are those set through the operation panel. These selections
remain in effect even when the printer is turned off, or send a different request through the
application.
3. Resetting the default values
The printer can be reset in three ways:
■
The reset printer function clears the memory of all fonts, macros, and page information but
does not affect the menu settings.
1 - 24
CHAPTER 1
■
The reset menu function performs a printer reset to clear all fonts, macros, and page information but returns some of the menu settings to their original factory defaults.
■
A cold reset clears the memory and restores all menu settings to their factory settings with
the exception of the page count value, multi-purpose tray page size, envelope feeder size, and
display language.
To perform a cold reset, press and hold down the On Line key while you turn on the printer. The printer displays the message COLD RESET followed by WARMING UP. When the
printer comes on-line, the factory default settings are restored.
1 - 25
CHAPTER 1
This page intentionally left blank
1 - 26
CHAPTER 1
AT:
Press:
MENU
SHIFT and MENU
To move:
Forward
Back
Item level
ITEM
SHIFT and ITEM
Forward
Back
Item level
+PLUS/-MINUS
SHIFT and +PLUS/-MINUS
Forward
Back
Menu level
READY
Press ON LINE to take the printer off-line.
PAUSED
Press +PLUS/-MINUS to select the item.
Press ENTER to select the value.
Press MENU to display the name of the first menu.
PCL MENU
FEEDER MENU
PS MENU
COPIES=1
*
PAGESIZE=LETTER
ORIENTATION=PORTRAIT
1 to 999
COPIES=1
*
1 to 999
A3, A4, A5, B4,
11x17, EXEC,
COM10, DL,
MONARCH, C5,
B5-JIS, B5-ISO,
LEGAL
PRINT ERRS=OFF
*
ON
*
LANDSCAPE
*
5 to 128
*
SOFT
FONTNUM=0
*
1 to 999
PT.SIZE=12.00
*
4.00 to 99.75
FORM=60 LINES
FNTSRC=INTERNAL
PITCH=10.00
FEED=DECK
*
DECK1, DECK2(if installed),
LOWER, UPPER, MPT,
ENVELOPE(if installed)
7 BIN SORTER MODE=MAILBOX
*
JOB SEPARATION, STACKER,
SORTING,
+TO CONFIRM/-CANCEL
OUTPUT=TOP OUTPUT BIN
SIDE OUTPUT BIN, SORTER BIN-UP,
BIN1=MAILBOX1, BIN2=MAILBOX2,
BIN3=MAILBOX3, BIN4=MAILBOX4,
BIN5=MAILBOX5, BIN6=MAILBOX6,
BIN7=MAILBOX7,
SORTER BIN-UP, 7 BIN SORTER,
BIN7=MAILBOX7,
SORTER BIN-UP, 7 BIN SORTER
*
TRAY SWITCH=ON
*
OFF
MANUAL=OFF
*
ON
*
LEAGAL, A3, A4, A5, 11x17,
EXEC, COM10, CUSTOM
MONARCH, C5, DL, B4, B5-JIS,
B5-ISO
MPTSIZE=LETTER
ISO L1, ISO L2, ISO L5, PC-8, PC-8 D/N, PC-850,
PC-852, PC-8TK, WIN L1, WIN L2, WIN L5,
DESKTOP, PS TEXT, VIN INTL, VN US, MS PUBL,
MATH-8, PS MATH, VN MATH, PI FONT, LEGAL,
ISO 4, ISO 6, ISO 11, ISO 15, ISO 17, ISO 21, ISO
60, ISO 69, WIN 3.0
*
LANGUAGE MENU
ENVSIZE=COM10
*
C5, DL, B5-ISO,
MONARCH
DUPLEX=OFF
*
ON
BINDING=LONG
*
SHORT
*
DANISH, DUTCH, FINNISH,
FRENCH, GERMAN,
ITALIAN, NORWEGIAN,
SWEDISH PORTUGUESE,
SPANISH
*
JAMRECOVERY=OFF
*
ON
PCL SAVE=OFF
*
ON
LOWER=PLAIN
*
AUTOCONT=ON
*
OFF
PS3 SAVE=OFF
*
ON
DECK= PLAIN
*
DENSITY=7
*
0 to 15
PWRSAV=30MIN
*
1HR, 2HR, 3HR, 4HR,
OFF, 15MIN
DECK1=PLAIN
*
(if installed)
DECK2=PLAIN
*
(if installed)
ECONOMY MODE=OFF *
ON
MAT=PLAIN
REFINE=ON
OFF
*
The following options
are available for all items:
PLAIN, LETTERHEAD, BOND,
RECYCLED, COLOR,
CARDSTOCK, LABELS,
TRANSPARENCY, ROUGH,
CUSTOM1, CUSTOM2,
CUSTOM3, CUSTOM4,
CUSTOM5, CUSTOM6
*
FORMAT DISK
+FORMAT DISK
-IGNORE DISK
+REALLY FORMAT
-IGNORE DISK
FORMAT FLASH
+FORMAT FLASH
-IGNORE FLASH
+REALLY FORMAT
-IGNORE FLASH
ETHERNET MENU
PARALLEL MENU
SHOW PAGE COUNT
PERSONALITY=AUTO
*
PS, PCL
PERSONALITY=AUTO
*
PS, PCL
PERSONALITY=AUTO
*
PS, PCL
TEST PRINT
I/O TIMEOUT=15
*
5 to 300
I/O TIMEOUT=15
*
5 to 300
BIDIRECTION=ON
*
OFF
I/O TIMEOUT=15
*
5 to 300
CLEANING PAGE
STAPLE TEST
PRINT PS FONTS
To open the RESET menu, press RESET.
Press +Plus/-Minus to select PRINTER or MENU.
MEMCONFIG MENU
UPPER=PLAIN
TOKEN RING MENU
TEST MENU
LANG=ENGLISH
CONFIG MENU
(if installed)
0.44 to 99.99
*
SYMSET=ROMAN-8
PAPER TYPE MENU
PRINT TOKEN CONFIG
PRINT PCL FONTS
RESET MENU
PRINT ETHER CONFIG
PRINT PS DEMO
RESET=PRINTER
*
MENU
CONTINUOUS TEST
PRINT PCL DEMO
Shaded menus appear after an option has been installed. E.g. A-72 module with
the Adobe PostScript 3 software or Network cards.
If there is insufficient memory, MEMCONFIG may not appear in PostScript mode,
even after the A-72 module has been installed. MEMCONFIG usually appears in
PCL mode.
Figure 1-7-2
1 - 27
CHAPTER 2
OPERATION AND TIMING
1. This chapter describes the printer functions, the relationships between mechanisms and circuits, and the timing of operations. Mechanical linkages are indicated by black and white
lines (
), the flow of control signals by solid arrows (
), and the flow of groups
of signals by outline arrows (
).
2. An active-high signal is indicated by "H" or by a signal name without a slash in front of it,
such as "PSNS." An active-low signal is indicated by "L" or by a signal name with a slash in
front of, such as "/SCNON."
A signal that is "H" or has a name without a slash is active at the supply voltage level
(indicating that the signal is being output), and inactive at ground level (indicating that the
signal is not being output).
A signal that is "L" or has a slash in front of its name is active at ground level, and inactive at the supply voltage level.
There is a microcomputer in this printer. But as the internal operation of the microcomputer cannot be checked, an explanation of the operation of the microcomputer has been left
out.
As it is assumed that no repair will be made to customer circuit boards, the explanation
of board circuits is limited to an outline using block diagrams. So there are two types of circuit explanations; (1) everything from the sensor to the input sections of the major circuit
boards, (2) everything from the output sections of the major circuit boards to the loads.
These are explained with block diagrams according to the function.
I.
BASIC OPERATION ................ 2-1
IV.
IMAGE FORMATION SYSTEM . 2-32
II.
ENGINE CONTROL SYSTEM .. 2-4
V.
PICK-UP/FEED SYSTEM ........ 2-42
III. LASER/SCANNER SYSTEM .... 2-26
VI. OVERALL CONTROL SYSTEM . 2-61
CHAPTER 2
I. BASIC OPERATION
A. Functions
Printer functions can be divided into four groups: the engine control system, the laser/scanner
unit, the image formation system, the paper pick-up/feed system.
To external device (host computer, etc.)
ENGIN CONTROL SYSTEM
OVERALL CONTROL SYSTEM
Video controller PCB
Operation
panel
Face-down tray
DC controller PCB
LASER/SCANNER UNIT
High-voltage
power supply
Scanning mirror
Laser diode
BD circuit
Envelope feeder (optional)
Scanner
motor
Envelope feeder
pick-up unit
Primary
charging
roller
Cleaning
unit
Developing unit
Photos
ensitive
drum
Fixing
unit
Transfer
charging
roller
Pick-up
control unit
IMAGE
FORMATION
SYSTEM
Face-up
tray
Low-voltage
power supply
Multi-purpose tray
Duplexing unit (option)
Upper cassette
Lower cassette
PAPER PICK-UP/FEED
SYSTEM
Figure 2-1-1
2-1
CHAPTER 2
B. Basic Operation Sequences
Operation sequences of the printer are controlled by the microcomputer on the DC controller
PCB. Descriptions of each period from ON until the main motor stops are as shown below. See
the appendix for timing chart.
Table 2-1-1
Period
Purpose
Remark
WAIT
(WAIT
period)
From power-ON until the fixing
roller temperature reaches 170°C .
(Less than 90 sec.)
Warms up the fixing rollers to
put the printer in the standby
mode. Cleans the transfer
charging roller.
During this period, the
printer checks if the cartridge is installed and if
there is toner in it.
STBY
(STANDBY)
From the end of the WAIT period
until a /PRNT signal is input from
the video controller, or from the
end of the LSTR period until a
/PRNT signal is input from the
video controller or until the power
is switched OFF.
Maintains the printing
temperature of the fixing roller
so that the printer is ready to
print.
If the printer stays in the
standby mode for longer
than five hours, it drives
the main motor for one
second to rotate the
fixing roller, to prevent it
from deforming.
INTR
(INITIAL
ROTATIONS
period)
After the /PRNT signal has been
input from the video controller
until the scanner motor becomes
ready (about 7 seconds).
To stabilize the sensitivity of
the drum in preparation for
printing and to clean the
transfer charging roller.
PRINT
(Print)
From the end of the INTR period
until the primary DC voltage
switches OFF.
To form an image on the
photosensitive drum according
to the VDO and /VDO signals
input from the video controller
and to transfer the image to
paper.
During this period, the
printer maintains the
printing temperature of
the fixing rollers.
To deliver the final page and
to clean the transfer charging
roller.
If a /PRNT signal is input
from the video controller,
the INITIAL ROTATIONS
period begins
immediately.
LSTR
After the primary DC voltage turns
(LAST
OFF until the main motor stops.
ROTATIONS
period)
2-2
CHAPTER 2
C. Power On Sequences
Sequences of the printer from power ON until it enters the standby mode are as shown below.
Power ON
CPU initialization
/PPRDY signal output
Fixing heater ON
Duplexing unit
connection
NO
Duplexing unit
initialization
Main motor, scanner motor, pick-up roller, registration
roller, primary AC, transfer negative bias ON
Development AC bias ON (Checks if
the cartridge is installed and if there is
toner in it)
Has fixing temperature
reached 145˚ C?
NO
Main motor, scanner motor, pick-up roller, registration
roller, primary AC, transfer negative bias ON
Has fixing temperature
reached 170˚ C?
During this period, checks if there is
residual paper in the printer. If automatic
paper delivery is required as a result of
the check, residual paper is delivered
automatically.
NO
Main motor, scanner motor, pick-up roller, registration
roller, primary AC, transfer negative bias ON
Standby
Figure 2-1-2
2-3
CHAPTER 2
II. ENGINE CONTROL SYSTEM
A. DC Controller Circuit
1. Outline
Operation sequences of the printer are controlled by the CPU of this circuit. When DC power is
supplied from the power supply by turning ON the power switch of the printer and the printer
enters the standby mode, the CPU outputs the signals that drive the loads such as laser diode,
motors, and solenoids, based on the print start command and image data.
2. Explanation of operations of each block
a. CPU (IC201)
An 8-bit single chip microcomputer (UPD78056) by NEC is used.
The CPU is a one-chip type in which ROM and RAM are built in, and controls the operation of
the engine according to the control program stored in the ROM.
b. Gate array (IC202)
Its functions are to:
1) control the laser/scanner,
2) control the video interface,
3) communicate with the envelope feeder,
4) communicate with the printer driver tester, and
5) operate as the expansion I/O.
DC controller
Serial line
IC 202
Gate array
Envelope feeder
I/O
Video controller
Bus
Serial line
Serial line
Serial line
Duplex unit
IC 201
CPU
Option controller
Figure 2-2-1
2-4
I/O
CHAPTER 2
3. DC Controller Input/Output Signals
DC controller PCB
Registration
paper
sensor
PS1
J11-3
-1
-2
J15-3
-1
-2
J14-1
-3
-2
J209-5
-3
-4
P5VB1
/REGS
"L" when the sensor detects paper.
Pick-up PCB
Pick-up unit
paper sensor
Paper pick-up
unit door
sensor
PS2
PS3
J13-3 J1205-1 P5VB1
-2
-2 GND
-1
-3 /FEEDS
J14-3 J1206-1 P5VB1
-2
-2 GND
-1
-3 /RDOORS
J1201-4 J219-18
-14
-8
-6
-16
-12
-10
-16
-6
-10
-12
P5VB1
/FEEDS
"L" when the sensor detects paper
/RDOORS "H" when the pick-up unit door is
open.
PS1201
Lower cassette
sensor
LDECKC
"H" when the sensor detects the
lower cassette.
UDECKC
"H" when the sensor detects the
upper cassette.
PS1202
Upper cassette
sensor
Lower cassette
paper-level
sensor 1
Lower cassette
paper-level
sensor 2
Upper cassette
paper-level
sensor 1
Upper cassette
paper-level
sensor 2
Lower cassette
paper-out
sensor
Upper cassette
paper-out
sensor
PS1203
LPVS2
PS1204
-7 .
-13
-8
-14
LPVS1
These sensors detect the amount
of paper remaining in the lower
cassette.
PS1205
UPVS2
PS1206
-5
-15
-9
-11
-15
-5
UPVS1
These sensors detect the amount
of paper remaining in the upper
cassette.
PS1207
/LDECKS
"L" when there is paper in the
lower cassette.
PS1208
/UDECKS "L" when there is paper in the
upper cassette.
Multi-purpose tray PCB
Multi-purpose
tray paper
sensor
PS1301
J1301-7 J214-7
/MPTPS
"L" when there is paper on the
multi-purpose tray.
MPTLS
P5VB1
"H" when the lifting plate has risen.
PS1302
Lifting plate
position sensor
-6
-3
-6
-3
Figure 2-2-2
2-5
CHAPTER 2
DC controller PCB
Switch/sensor PCB
Face-down
tray paper full
sensor
PS1401
J1401-10 J205-7
FDFULS
"H" when the face-down tray is
fully loaded with paper.
FDOUTS
"H" when the sensor detects paper.
FPOUTS
+24VB
"H" when the sensor detects paper.
PS1402
Face-down
tray delivery
sensor
-12
-9
-11
-8
PS1403
Fixing unit
delivery sensor
-1 J221-1
-2
-2
-4
-3
SW1401
+24VA
-5 J205-3
-7
-4
-8
-5
-9
-6
Door switch
EP-72 cartridge
Toner
sensor
ANTIN
High-voltage power
supply PCB
TB705
UDOORS "H" when either the upper or
delivery cover is open.
PCB
J701-A10 J220-A10
TONSNS
Detects no cartridge installed and
toner out.
Cassette paper-size sensing switch PCB
Lower cassette
paper-size
sensing switch
SW1601
SW1602
SW1603
SW1604
J1601A-1 J215-5
-2
-4
-3
-3
-4
-2
-5
-1
LSIZE1
LSIZE2
LSIZE3
LSIZE4
Detects the lower cassette
paper-size.
J1601B-1 J215-10
-2
-9
-3
-8
-4
-7
-5
-6
USIZE1
USIZE2
USIZE3
USIZE4
Detects the upper cassette
paper-size.
Cassette paper-size sensing switch
Upper cassette
paper-size
sensing switch
SW1601
SW1602
SW1603
SW1604
Figure 2-2-3
2-6
CHAPTER 2
DC controller PCB
Laser/scanner unit
Laser diode
Laser driver
J1001-8
-10
-1
-2
-5
-3
-4/-7/-9
J202-4
-2
-11
-10
-7
-9
-3/-5/-8
J6-3/-4
BD PCB
Scanner
motor
High-voltage
power
supply PCB
MT1
Main motor
-3
-1
-4
J701
-A12/-B12
-A1
-B1
-A2
-B2
-A3
-B3
-A4
-B4
-A6
-A7
-B7
-A8
-B8
-A9
-B9
-B10
-A11/-B11
DRVES
/LENBL
/LON
VDO
/VDO
Analog signal in proportion to the laser
intensity is input.
"L" to switch the laser ON according to the VDO and
/VDO signals.
"L" to turn the laser ON compulsively.
The laser is turned ON only when the /LENBL, VDO,
and /VDO are "L", "H", and "L" respectively. (LOWVOLTAGE DIFFERENTIAL signal)
J206-1/-2
-2
J1-1
-7
-6
-5
-3
-2/-4
+5V
-1
-7
-6
-5
-3
-2/-4
J18
-1
-7
-6
-5
-3
-2/-4
J207-7
-1
-2
-3
-5
-4/-6
J220
-A12/-B12
-A1
-B1
-A2
-B2
-A3
-B3
-A4
-B4
-A6
-A7
-B7
-A8
-B8
-A9
-B9
-B10
-A11/-B11
J12-1
J218-1
-2
-3/-4
-2
-3/-4
-5/-6
-5/-6
/BDI
+5V
BD input signal (pulse)
+24VA
+5V
/SCNRDY
/SCND
SCNCLK
"L" when the scanner motor reaches the
prescribed speed.
"L" to drive the scanner motor.
Scanner motor reference clock signal.
+24VB
TRFVCNT
/TRFNVD
TRFVSNS
/HRLBD
/TRFCCD
/DCHGBD
/TRFCLK
/DCHGUP
HVTCLK
/DEVACD
PRIACCLK
DEVACCLK
/PRIACD
/DEVDCD
/PRIDCD
DENADJ
Transfer bias drive signal
Transfer negative bias drive signal
Transfer bias monitor signal
Fixing roller bias drive signal
Transfer bias constant current drive signal
Discharge bias drive signal
Transfer bias frequency output signal
Discharge bias switch signal
High voltage bias frequency output signal
Developing AC bias drive signal
Primary AC bias frequency output signal
Developing AC bias frequency output signal
Primary AC bias drive signal
Developing DC bias drive signal
Primary DC bias drive signal
Image density adjustment signal
/MMRDY
"L" when the main motor runs normally.
/MMOTD
"L" to run the main motor.
+24VB
Figure 2-2-4
2-7
CHAPTER 2
DC controller PCB
Fixing unit/
Scanner unit
fan
Power supply
fan
Electrical unit
fan
Fixing unit fan
Multi-purpose
tray fan
FAN1
FAN2
FAN3
FAN4
FAN5
J208-1
-2
-3
FAN1D
/FAN1S
"H" to rotate at high speed, "L" t
rotate at low speed.
"L" when the exhaust fan runs
normally.
J216-1
-2
-3
FAN2D
/FAN2S
"H" to rotate at high speed, "L" to
rotate at low speed.
"L" when the exhaust fan runs
normally.
J13-1
-2
-3
J12-3
-2
-1
J210-1
-2
-3
FAN3D
/FAN3S
"H" to rotate at high speed, "L" to
rotate at low speed.
"L" when the exhaust fan runs
normally.
J26-1
-2
-3
J25-3
-2
-1
J225-1
-2
-3
FAN4D
/FAN4S
"H" to rotate at high speed, "L" to
rotate at low speed.
"L" when the suction fan runs
normally.
J35-1
-2
-3
J34-3
-2
-1
J229-1
-2
o
-3
FAN5D
/FAN5S
"H" to rotate at high speed, "L" to
rotate at low speed.
"L" when the exhaust fan runs
normally.
+24VA
Registration
clutch
CL1
J17-2
-1
J16-1
-2
J209-2
-1
/REGCLD
"L" to run the registration roller.
FEDAD
FEDAND
FEDBD
FEDBND
Pick-up motor rotation control
signal
Pick-up PCB
Paper pick-up
motor
SMT1
J1202-1
-2
-3
-4
J1201-20 J219-2
-19
-1
-18
-4
-17
-3
+24VA
Cassette feed
solenoid
SL1
J1203-2
-1
Feed clutch
CL2
J1204-2
-1
-11
-9
-13
-7
Figure 2-2-5
2-8
/PUPSLD
"L" to lower the arm.
/FEEDCLD
"L" to turn the feed roller.
CHAPTER 2
DC controller PCB
Multi-purpose tray PCB
Lifting plate
solenoid
SL2
J1302-2
-1
Manual feed
clutch
CL3
J1303-2
-1
+24VA
J1301-2 J214-2
-5
-5
-4
-4
/MPTSLD "L" to drive the lifting plate. If the
plate is up it will drop, if down it will
rise.
/MTPCLD "L" to rotate the manual feeding
pick-up roller.
Switch/sensor PCB
+24VA
Face-up
solenoid
J1402-2
-1
SL3
J1401-13 J205-10
Power
supply
AC power
Power
switch
S101
Fixing unit
J102-2 J217-2
-6
-6
-7
-7
-8
-8
t
J50-3
J50-5
J50-6
J50-4
J53
J10-1
FSRN1
-4
FSRL1
-3
FSRL2
-2
FSRN2
J55
-9
-9
-10
-10
-11
-11
-12
-12
-13
-13
-1
-3
-5
-1
-3
-5
-4
-4
Relay
H2
Fixing sub heater
J52
J54
Thermo-switch
TSW
J56-2
-1
"L" to deliver printed paper face up.
RLD
"L" to turn OFF the relay and interrupt
the power to the fixing heater.
The main heater is turned ON when
the FSRDE signal is output and this
signal is "L."
The sub heater is turned ON when
the FSRDE signal is output and this
signal is "L."
Fixing heater drive enable signal
(pulse signal)
"L" when the current transformer
detects the power to the fixing heater.
Inverter circuit control signal.
/FSRD1
/FSRD2
FSRDE
FSRCT
SUPSLT
/RLDSNS "L" when the relay is turned ON.
PSTYP
/REMT24
"L" when the line voltage is 200V (for
200V model only)
When "L", the power supply uni
outputs 24V to the DC controller.
RY151
RY152
H1
Fixing main heater
Fixing roller
surface
temperature
sensor
TH
/FUSLD
J50B-6
-3
J222-1
-4
TSWOUT
TSWIN
J51-2 J50B-5
-4
-1
J222-2
-3
FSRTH
The voltage drops as the
fixing roller temperature
rises.
Figure 2-2-6
2-9
CHAPTER 2
B. Fixing Control
1. Fixing temperature control
The upper fixing roller contains two heaters: fixing main heater (H1: 600W) and fixing sub heater
(H2: 450W). The fixing main heater heats the center of the upper roller, and the fixing sub heater
mainly heats both ends of the upper roller. The figure below shows the light distribution of the
heaters.
Surface temperature of the
upper fixing roller
Fixing main heater
°C
The center of the upper roller
Thermistor
Fixing sub heater
Drive
side
Fixing upper roller
Figure 2-2-7
The surface temperature of the fixing roller is detected by the thermistor (TH1) on the fixing
roller. As the surface temperature rises, the resistance of TH1 decreases, and the voltage of the
FIXING ROLLER TEMPERATURE DETECTION signal (FSRTH) lowers.
The CPU (IC201) on the DC controller controls the FIXING MAIN HEATER DRIVE signal
(/FSRD1), FIXING SUB HEATER DRIVE signal (/FSRD2), FIXING HEATER DRIVE ENABLE signal (FSRDE), and INVERTER CIRCUIT DRIVE signal (SUPSLT) based on the voltage of the
FSRTH signal in order to bring the surface temperature of the fixing roller to the specified value.
This printer sets the TH-L/H signal to "H" when the fixing roller temperature is low (during
warm-up) and to "L" when the temperature is high (during normal temperature control) in order
to improve the accuracy of the FSRTH signal detection.
Table 2-2-1 shows the fixing roller target temperature during wait, standby, and print periods.
When it receives a /PRNT signal from the video controller, the CPU starts the fixing heater
print temperature control. The target fixing temperature and print speed at that point is shown
in Table 2-2-1. When you make duplex print or select "ROUGH" in "PAPER TYPE MENU" from
the control panel, the target fixing temperature and print speed are different from that of normal printing.
2 - 10
CHAPTER 2
Table 2-2-1
Target temperature (˚C)
WAIT
STBY
170
169
Normal mode
Rough mode
PRINT (note 1)
PRINT SPEED (note 2)
(ppm)
190
32
195
24
Notes: 1. The target temperature for the first page in duplex print is 5°C lower.
2. The print speed in the above table is for A4 or Letter sized paper.
2 - 11
CHAPTER 2
DC controller PCB
+5V
+5V
Q208
J222-2 FSRTH
Thermistor
+5V
+5V
GATE
ARRAY
IC202
+5V
Q207
51
-3 GNDTH
Thermoswitch
+5V
J222-1 TSWOUT
-4 TSWIN
129
128
125
126
122
Fixing
roller
heater
Fixing
roller
78
+5V
C221
+5V
1
C296
J217-13 /REMT24
FSRCT
J217-9
J217-10 SUPSLT
TSWIN
TSWOUT
J217-3
-5
J217-12 PSTYP
FSRTH
RLD
FSRDE
J217-1
-2
-8
Triac drive
circuit
J217-11 /RLDSNS
/FSRD1
/FSRD2
J217-6
-7
47
+5V
DA21
DA20
DC15
DC16
DC12
P12/
AN12
P15
CPU
IC201
44
FSRL1 J10-2
-3
FSRL2
-4
FSRN2
-1
FSRN1
DB21
48
P30/T00
P33/T11
P34/T12
Q206
+24V
Safety
circuit
Relay
drive
circuit
Low-voltage
power supply
circuit
AMP
+5V
Triac drive
circuit
Current
transformer
Inverter control circuit
Power supply unit
Figure 2-2-8
2 - 12
CHAPTER 2
2. Protective function
The printer has three protection functions to prevent abnormal temperature rise of the fixing
roller.
• The CPU monitors the thermistor voltage. If the thermistor voltage becomes lower than
about 1.0V (230°C), the CPU identifies the fixing unit failure, and interrupts power to the
fixing unit and reports it to the video controller.
• If the surface temperature of the upper fixing roller rises abnormally and the thermistor voltage falls below about 0.8V (235°C), the safety circuit in the power supply interrupts power
to the fixing roller heater regardless of outputs from the CPU.
• If the surface temperature of the upper fixing roller rises abnormally and the thermoswitch
temperature exceeds 200°C, the thermoswitch turns off and cuts power to the fixing roller
heater.
3. Fixing unit failure detection
The CPU assesses a fixing unit failure in the following cases and reports it to the video controller.
a. Thermistor broken wire detection
The detected voltage of the thermistor is 4.6V or more when the thermistor voltage detection
mode (note) is in the error detection mode after the fixing heater is activated.
b. Maximum temperature detection
The fixing temperature rises abnormally and the temperature detected by the thermistor exceeds
about 230°C, during standby or printing.
c. Warmup error detection
The fixing unit does not reach the target temperature (see Table 2-2-1) within 180 seconds after
the start of warm-up.
d. Broken wire detection after the fixing unit is ready
The temperature detected by the thermistor is 150°C, or below during standby or printing.
e. Heater current detection
• The CPU detects a fixing heater broken wire if the FIXING HEATER CURRENT SENSE signal
(FSRCT) level is same as the all heaters OFF level when the fixing main heater or/and fixing
sub heater is/are driven.
• The CPU detects a fixing heater excursion if the FIXING HEATER CURRENT SENSE signal
(FSRCT) level is higher than the fixing main heater and fixing sub heater ON level when the
fixing main heater or/and fixing sub heater is/are OFF.
• The CPU detects a fixing heater excursion if the FIXING HEATER CURRENT SENSE signal
(FSRCT) level is higher than the specified value when both heaters are OFF.
Note:
There are two thermistor voltage detection modes: error detection mode and normal
mode. In the error detection mode, sensitivity in the initial range (low temperature
range) is increased to improve detection accuracy. When the thermistor temperature
exceeds 60°C , it changes to the normal mode.
If the CPU detects a fixing unit failure, it does the following:
1) Stops the fixing roller heater.
2) Sets the RELAY DRIVE signal (RLD) to “L”, and turns the relay in the power supply OFF to
interrupt the power to the fixing roller heater.
3) Reports the fixing unit failure to the video controller.
2 - 13
CHAPTER 2
4. Envelope position lever function
This printer can adjust the nip width in two steps by changing the spring pressure of the lower
fixing roller. If an envelope wrinkles after it is printed, set the envelope position lever to the envelope position.
➁
➀
➀ Normal mode
➁ Envelope mode
Figure 2-2-9
2 - 14
CHAPTER 2
2 - 15
CHAPTER 2
C. High-Voltage Power Supply
J701-B7
PR1ACCLK
J701-B8
/PR1ACD
[T701]
Primary AC
PR1
Transformer
AC Transformer
Drive Circuit
AC Current
detection Circuit
J701-B9
J701-A6
J701-B10
/PR1DCD
HVTCLK
[T702]
Primary DC
Transformer
AC Transformer
Drive Circuit
DENADJ
TB701
To primary
charging roller
Image Density
Adjustment Circuit
[T704]
J701-A9
J701-A7
J701-A8
J701-A10
J701-A3
J701-A1
J701-A4
J701-A2
J701-B1
J701-B2
J701-B3
J701-B4
/DEVDCD
J701-A11
J701-B11
Developing DC
Transformer
[T703]
/DEVACD
Developing AC DEV
Transformer
AC Transformer
Drive Circuit
DEVACCLK
TONSNS
Toner detection
Circuit
/TRFCCD
Transfer Constant Current
Control Circuit
TRFVCNT
TRFCLK
/TRFNVD
/HRLBD
/DCHGBD
/DCHGUP
+24VB
GND
GND
From toner
sensor
[T705]
To transfer
charging roller
Transfer Positive
Voltage Sense Circuit
[T706]
Transfer Negative
Voltage Transformer
Drive Circuit
Transfer Negative
Voltage Transformer
Upper Fixing Roller
Voltage Transformer
Drive Circuit
[T707]
Upper Fixing
Roller Voltage
Transformer
Discharge Voltage
Transformer Drive
Circuit
[T708]
Discharge
Voltage
Transformer
Negative Voltage
Generation Circuit
Upper Fixing Roller
Voltage generation
Circuit
HRLB
TB705
To upper fixing
roller
Discharge
DCHGB TB706
Voltage
To static charge
Generator Circuit
eliminator
+24V
+21.5V
+24V
Reference
Voltage
Power Supply
Figure 2-2-10
2 - 16
TB702
To developing
cylinder
TONANT TB703
Transfer Positive
Voltage
Transformer
Transfer Positive Voltage
Transformer Drive Circuit
TRFVSNS
J701-A12 +24VB
J701-B12
DC Transformer
Drive Circuit
GND TB704
CHAPTER 2
1. Outline
In response to the instruction from the microprocessor (CPU) on the DC controller PCB, the
high-voltage power supply applies a voltage to the primary charging roller, developing cylinder,
transfer charging roller, static charge eliminator, and upper fixing roller. It applies a voltage of
DC voltage and AC voltage to the primary charging roller and developing cylinder, applies a positive or negative DC voltage to the transfer charging roller, and a negative DC voltage to the static charge eliminator and the upper fixing roller.
2. Principle of operation
a. Primary charging roller voltage generation
When the /PRNT signal sent from the video controller becomes “L”, initial rotation starts, and
the DC controller sets the PRIMARY AC BIAS DRIVE signal (/PRIACD) to "L." The circuit then
applies the primary AC bias to the primary charging roller. After the specified period of time has
elapsed the PRIMARY DC BIAS DRIVE signal (/PR1DCD) goes “L” and the voltage superimposing primary AC bias onto primary DC bias is applied to the primary charging roller.
The primary DC bias changes with the developing DC bias according to the IMAGE DENSITY
ADJUSTMENT signal (DENADJ) sent from the DC controller.
b. Developing bias generation
When the DEVELOPING DC BIAS DRIVE signal (/DEVDCD) from the DC controller becomes “L”,
a developing DC bias is applied to the developing cylinder.
When the VERTICAL SYNC signal (/VSYNC) is sent from the video controller, the DC controller outputs the DEVELOPING AC BIAS DRIVE signal (/DEVACD) and DEVELOPING AC BIAS
FREQUENCY OUTPUT signal (/DEVACCLK). This circuit then applies the voltage superimposing developing DC bias and developing AC bias to the developing cylinder.
The developing DC bias changes according to the IMAGE DENSITY ADJUSTMENT signal
(DENADJ), making the image density adjustable.
c. Transfer charging roller voltage generation
The negative, between-page, and print bias are applied to the transfer charging roller according
to the print sequence.
The negative bias voltage is applied to the transfer charging roller at an appropriate timing to
move the toner attached to the transfer charging roller onto the photosensitive drum to clean the
roller.
For the between-page bias, a positive low voltage is applied to the transfer charging roller at
an appropriate timing so that the toner remaining on the photosensitive drum is not attracted
to the transfer charging roller.
For print bias, a positive voltage is applied to the transfer charging roller in order to transfer
the toner on the photosensitive drum surface to the paper.
When the /PRNT signal sent from the video controller becomes “L”, initial rotation starts and
a negative bias is applied to the roller for a certain time to clean the transfer charging roller.
Between-page bias is then applied, and a print bias is applied to the transfer charging roller after
the prescribed time has elapsed since the /VSYNC signal going “L”.
A print bias is applied during the print sequence to transfer the toner onto the paper. A
between-page bias is applied between pages.
After the completion of printing, a between-page bias and a negative bias are applied again to
clean the transfer charging roller.
d. Generation of print voltage to the discharger
2 voltage loads, high and low output bias are applied to the discharger according to the various
print sequences.
The discharger bias drive signal (/DCHGBD) output from the DC Controller is “L”, and when
2 - 17
CHAPTER 2
the discharger bias switch signal (/DCHGUP) turns “H” the low output bias changes to “L” and
the circuit applies a high voltage output bias. The high voltage output bias is applied only at
the trailing edge of a single side print and during the second side of a duplex print.
e. Toner sensing/cartridge sensing
The EP-72 cartridge has a toner sensor.
The DC controller detects the toner level and whether a cartridge is installed when the developing AC bias is applied to the developing cylinder by the DEVELOPING AC BIAS DRIVE signal
by checking the TONER LEVEL signal (TONSNS) voltage.
2 - 18
CHAPTER 2
D. Power Supply
1. Outline
Power supply
To fixing roller heater
Noise
filter
Circuit
breaker
DC controller
+3.3V
+5V
Current
transfor
-mer
Power
switch
(S101)
Inverter control
circuit
Relay
Current
fuse
Triac
Phototriac
coupler
Phototriac
coupler
Rectificat
ion circuit
Triac
+5V
Laser driver
Phototriac
coupler
+5V
BD PCB
Safety
circuit
Rectificat
ion circuit
Over-current
detection circuit
Noise
filter
Phototriac
coupler
t
Converter
Rush curren
prevention
circuit
Switching
FET
Filter
circuit
Transformer
Heater
drive
circuit
Filter
circuit
Switching
FET
Rectificat
ion filter
circuit
+24V
/REMT24
Switching
FET
Control
FSRTH
RLD
/FSRD1
/FSRD2
/FSRDE
/FSRCT
SUPSLT
/RLDSNS
TSWIN
TSWOUT
+5V
Switching
FET
Filter
circuit
+3.3V
Operation
panel
+24VA
Scanner
motor
+24VB
High-voltage
power supply
+24VA
Solenoids
Clutches
+24VB
Current
and
voltage
detection
circuit
+5V control
photocoupler
IC
Abnormal
voltage latch
photocoupler
Sensors
+5V
+5V
Transformer
Video
controller PCB
Main motor
Switch
/sensor
PCB
Door
switch
(SW1401)
+24VB
+24VA
Low-voltage power supply circuit
Figure 2-2-11
AC power is supplied to the low-voltage power supply when the main switch (S101) is turned
ON. The low-voltage power supply generates the required +24VDC, +5VDC and +3.3VDC for the
printer. +24VDC is supplied to the DC controller from the low-voltage power supply when the
DC controller sets the REMOTE 24V signal (/REMT24) to "L."
+24VDC is supplied to the high-voltage power supply PCB, +5VDC main motor, scanner motor,
and fans. +5VDC is used for sensors and ICs on the DC controller PCB.
+24VDC is divided into +24VA which is normally supplied from the power supply and +24VB
which is shut OFF when the door switch (SW1401) is turned OFF by opening the top cover or
2 - 19
CHAPTER 2
delivery cover.
+5VDC is divided into +5V which is normally supplied to the ICs on the DC controller PCB
from the power supply and +5V for power-saving mode (P5VB1). Supply of +5V for the powersaving mode is stopped when the sleep command is received from the video controller. During
standby mode and periods when printing is not possible (when /RDY signal is “H”), the +5V is
supplied OFF and ON.
The DC controller PCB generates +5VC and supplies it to the laser driver.
This is shown in the block diagram below.
2. Protective Function
The +24VDC, +5VDC, and +3.3VDC power supply circuits have an over-current protective function and over-voltage protective function, which automatically interrupt output voltage to protect the circuits when a short circuit or other troubles on the load side result in over-current
flow or abnormal voltage.
If the over-current/over-voltage protective functions are activated, and no DC voltage is output from the power supply circuits, turn OFF the power switch, rectify the trouble on the load,
and then turn ON the power switch again. Wait at least for 2 minutes before turning the power
switch ON again.
If over-current flows through the AC line, the circuit breaker in the power supply is turned
OFF to cut off the output voltage.
2 - 20
CHAPTER 2
E. Video Interface Control
1. Outline
To connect the printer to an external device, such as a host computer, a video controller PCB
(interface PCB) is needed.
This section explains the kinds of interface signals exchanged between the printer and the
video controller PCB, and gives information concerning the sequence of printer operation making use of interface signals.
a. Video interface signals
External device
(host computer, etc.)
Video controller
PCB
DC controller
PCB
Printer
/BD
/PPRDY
/RDY
/VSREQ
/SBSY
/STS
LASER DRIVE
signal
(VDO, /VDO)
Laser
driver
/CCRT
/PCLK
/PDLV
/PFED
/SPCHG
/CBSY
/PRNT
/VSYNC
/PRFD
/CPRDY
VDO
/VDO
/CMD
/CCLK
CPSEL
/FPCS
/FPO
/FPI
FPCK
Figure 2-2-12
2 - 21
CHAPTER 2
2. Operation
When the power is switched ON, the printer enters WAIT mode.
At the end of the WAIT mode, the DC controller sends the READY signal (/RDY) to the video
controller to inform it that printer is ready to print.
When the /RDY signal is “L” and data for a page is prepared, the video controller sends the
PRINT signal (/PRNT) to the DC controller.
When the DC controller receives the /PRNT signal, it starts the operation of the INITIAL
ROTATIONS (INTR) period.
At the end of the INTR period, the DC controller sends the VERTICAL SYNC REQUEST signal (/VSREQ) to the video controller.
The video controller receives the /VSREQ signal, and sends the VERTICAL SYNC signal
(/VSYNC) to the DC controller. When the /VSYNC signal is received, the print sequence is started.
The video controller sends the VIDEO signals (VDO, /VDO) synchronized with the HORIZONTAL SYNC signal (/BD) and VERTICAL SYNC signal (/VSYNC) from the DC controller to the
laser driver through the DC controller.The VIDEO signals (VDO, /VDO) are sent to the laser driver as two low-voltage differential signals.
In response to the VIDEO signals (VDO, /VDO), the laser driver switches the laser diode ON
and OFF.
The laser beam is scanned repeatedly across the photosensitive drum with the scanning mirror to form the latent electrostatic image of the original image.
The latent electrostatic image on the photosensitive drum is transferred onto the paper in the
electronic photographic process, and the paper is sent out through the face-down or face-up
trays.
When a page is being printed, the DC controller checks for other /PRNT or /VSYNC signals
from the video controller.
If none have arrived, the DC controller begins operation of the last rotations period (LSTR).
At the end of this period, the printer enters standby (STBY) mode.
If other /PRNT or /VSYNC signals arrive-during printing, the print sequence continues. The
last rotations operation is performed and the printer enters standby mode.
2 - 22
CHAPTER 2
F. Other Controls
1. Main motor control
Figure below shows the main motor control circuit.
DC controller PCB
Main motor
+24VB
CPU
J218-5
IC201
-6
+5V
P62
J36-5
-1
38
-6
/MMRDY
-1
M
+5V
P63
39
MT1
-2
/MMOTD
-2
-3
-3
-4
-4
Figure 2-2-13
The main motor is a DC brushless motor with hall elements, and is unified with the motor drive
circuit.
The CPU (IC201) sets the MAIN MOTOR DRIVE signal (/MMOTD) to “L” and rotates the main
motor.
When the main motor rotates and reaches its specified speed, it sets the MAIN MOTOR
READY signal (/MMRDY) to “L.”
The CPU notifies the video controller PCB of a main motor failure in the following cases:
1) The /MMRDY signal does not become “L” withing 2.5 seconds after from the main motor
rotation starts.
2) The /MMRDY signal becomes “L” once, but becomes “H” for more than 0.1 seconds continuously during the specified speed rotation.
2 - 23
CHAPTER 2
2. Fan motor control
This printer has 4 heat exhausting fans and an air intake fan. They are DC brushless motors.
The figure below shows the fan motor control circuit.
DC controller PCB
P121
53
Multi-purpose
tray fan motor
drive circuit
Multi-purpose
tray fan
J229-1
-2
-3
FAN5D
/FAN5S
GND
J34-3
-2
-1
J35-1
-2
-3
IC201
(CUP)
FM5
Fixing unit/
Scanner unit
fan
P120
P61
J216-1
-2
-3
52
FAN2D
/FAN2S
GND
FM2
37
Electrical unit
fan
J210-1
-2
-3
DC14
DA04
FAN3D
/FAN3S
GND
J12-3
-2
-1
J13-1
-2
-3
FM3
Power supply
fan
124
J208-1
-2
-3
64
FAN1D
/FAN1S
GND
FM1
IC202
(G.A.)
DA05
DA03
65
61
Fan motor
drive circuit
Fixing unit fan
J225-1
-2
-3
FAN4D
/FAN4S
GND
J25-3
-2
-1
J26-1
-2
-3
FM4
Figure 2-2-14
When the power switch of the printer is turned ON, the CPU (IC201) on the DC controller sets
the No.53 pin to "H" and rotates the multi-purpose tray fan (FM5) at half speed for about 15 seconds. The CPU sets the No.65 pin to "H" via the gate array (IC202), and rotates the power supply fan (FM1), fixing unit/scanner fan (FM2), electrical unit fan (FM3), and fixing unit fan (FM4)
at half speed.
When it receives a /PRNT signal from the video controller, the CPU rotates FM1, FM2, FM3,
and FM4 at full speed and FM5 at half speed (full speed in case of duplex printing). When the
main motor drive stops after printing, the CPU rotates FM1, FM2, FM3, and FM4 at full speed
for about 30 seconds then at half speed. The CPU rotates FM5 at half speed for about 30 seconds (full speed for about 30 seconds in case of duplex printing).
The drive voltages output from the fan motor drive circuit and multi-purpose tray fan motor
2 - 24
CHAPTER 2
drive circuit switch the fun motor rotation speed between full and half speed.
The CPU assesses a fan motor failure and reports it to the video controller, if the FAN LOCK
DETECTION signals (/FAN1S, /FAN2S, /FAN3S, /FAN4S, /FAN5S) stay "L" for about 1.5 seconds or more for 3 times at 5 seconds intervals while the fan motors are ON.
2 - 25
CHAPTER 2
III. LASER/SCANNER SYSTEM
A. Outline
External device
Video controller PCB
/BD
/VSYNC
/VDO
VDO
DC controller
/VDO VDO /LENBL /LON
DRVES
/SCND
/SCNRDY
/BDI
Cylindrical lens
Laser driver
Scanner motor
BD mirror
Scanning mirror
Mirror
Focusing lens
BD PCB
Photosensitive drum
Figure 2-3-1
The DC controller PCB receives the VIDEO signals (/VDO, VDO) from the video controller PCB
and sends then to the laser driver in the laser/scanner unit.
The laser driver turns the laser diode ON and OFF according to the video signal (/VDO, VDO)
and generates the modulated laser beam only when the VIDEO ENABLE signal (/LENBL) from
the DC controller is “L.”
The modulated laser beam is aligned by a collimator lens and a cylindrical lens into a parallel beam which strikes the scanning mirror that is rotating at a specified speed.
The beam reflected from the scanning mirror is brought to a point of focus on the photosensitive drum with the focusing lens and the mirror located in front of the scanning mirror.
As the scanning mirror rotates at a specified speed, the beam is scanned across the drum at
a specified speed.
The drum also rotates at a specified speed and the laser beam successively scans across its
surface. Thus the laser beam builds up an image on the drum surface.
2 - 26
CHAPTER 2
B. Laser Control Circuit
1. Outline
DC controller PCB
Laser driver PCB
PD
(Photo diode)
IC201 CPU
J201-C6
/PRNT 66
P05/
INTPS
P14/ 80
AN14
LD
(Laser diode)
J202
J1001
DRVES
-2
-10
+5V
J202-4
IC202
NLON
NENBL
J1001-8
49
-10
/LON
-2
48
-11
/LENBL
-1
-9
/VDO
-3
-7
VDO
-5
VCC
Drive IC
Logic IC
/VDOUT
G.A.
Receiver
Power
adjustment
circuit
-5/-8
-4/-7
Analog
adder
circuit
GND
Laser driver IC
NBDI
-C2
/VDO
-C1
VDO
56
J206
-3
/BDI
J6-2
BD PCB
Figure 2-3-2
This circuit switches ON and OFF the laser diode (LD) with a constant intensity in response to
the video signals (/VDO, VDO) sent from the video controller PCB.
The /VDO and VDO signals are converted into the low voltage differential signals to suppress
radiation noise from the video controller PCB and sent to the DC controller PCB, and then sent
to the receiver in the laser driver circuit. The receiver demodulates the low voltage differential
signals and transmits it as a VIDEO OUT signal (/VDOUT) to the logic circuit in the laser driver
IC.
If the VIDEO ENABLE signal (/LENBL) from the microprocessor (CPU: IC201) is “L”, the laser
driver circuit turns the laser diode ON and OFF according to the /VDOUT signal.
The CPU monitors the LASER FAILURE DETECTION signal (DRVES) sent from the laser driver PCB to check whether the laser diode is generating laser normally or not.
The CPU emits laser forcibly when the /BDI signal is not input for 0.7 continuous seconds
from the BD PCB while the scanner motor runs at the specified speed, and notifies the video
controller of the BD failure when the DRVES signal is 3.805V or less and the laser failure when
2 - 27
CHAPTER 2
it exceeds 3.805V.
2. Automatic power control of laser diode
The laser driver IC controls the automatic power control (APC) of the laser diode so that the laser
diode emits a beam of constant intensity.
When the FORCED LASER ON signal (/LON) becomes “L,” or the VIDEO ENABLE signal
(/ENBL) and /VDOUT signal become “L,” the laser diode emits light according to the standard
voltage of the laser driver PCB. The photo diode in the laser diode detects the beam intensity
and feeds back the corresponding current value to the control amplification circuit. It is then
compared with the current value set in the power adjustment circuit, and the intensity of the
current to the laser diode is controlled.
The printer uses the APC method that conducts the beam intensity detection and control for
each dot while the laser driver is emitting laser.
While in the conventional method, the beam
intensity was measured by emitting laser for a certain period of time between pages or during
unblinking, this method controls the laser output, detecting the intensity of the laser which is
actually forming an image. Therefore, the APC of this printer has higher reliability of control
over the conventional APC.
3. Horizontal synchronization control
The CPU generates an UNBLANKING signal inside the IC201 based on the BD input signal
(/BDI) sent from the BD PCB of the laser/scanner unit.
IC201 sets the FORCED LASER ON signal (/LON) to “L” during unblanking period. The laser
driver turns the laser diode ON when the /LON signal is “L.”
The laser beam turned ON by the /LON signal is reflected at the small fixed BD mirror located in the light path where the laser beam scanning starts, and is input to the BD PCB in the
laser/scanner unit.
The BD PCB detects the laser beam, generates a BD INPUT signal (/BDI), and sends it to the
CPU. The CPU generates a BEAM DETECTION signal (/BD) according to the /BDI signal and
sends it to the video controller PCB.
4. Laser diode emission control
Based on the paper size data, the CPU generates a VIDEO ENABLE signal (/LENBL) and sends
it to the logic circuit of the laser driver IC. The /VDOUT signal is masked by the /LENBL signal in the logic circuit, which controls the emission period of the laser diode.
The paper size data is supplied to the CPU by the cassette paper size switches for cassette
pick-up and by the paper size specification command from the video controller PCB for multipurpose tray pick-up.
The CPU generates the IMAGE TOP ERASE AND BOTTOM ERASE signal (TOPE) and HORIZONTAL IMAGE MASK signal (MSK) according to the paper size data. (TOPE and MSK are used
inside the CPU and are not output externally.)
To prevent the laser beam from writing on non-image area during the non-unblanking period, the CPU sets the VIDEO ENABLE signal (/LENBL) to “L” only when the TOPE and MSK signals are “L.” The laser driver turns the laser diode ON when the /LENBL signal and /VDOUT
signal are “L.”
2 - 28
TOPE
/BD
T1
2 mm
T2
2 mm
MSK
/VSYNC
CHAPTER 2
3 mm
3 mm
Figure 2-3-3
Notes: 1. The shaded area indicates the area where the laser beam writes on the drum.
2. T1 and T2 vary according to the paper size. If no paper size is specified by the paper
size specification command from the video controller during manual feed, the printer does not recognize the paper width. So the T1 and T2 values are assumed to be
UNIVERSAL size (297.0mm x 635.0mm), the maximum paper width for this printer.
3. The CPU determines the actual size of the paper being fed by detecting the time from
the leading edge of the paper passes through the registration paper sensor (PS1) until
its trailing edge clears the sensor. The image is then masked according to the detected paper size.
2 - 29
CHAPTER 2
C. Scanning System
Figure below shows the scanner motor control circuit.
DC controller PCB
+5V
J207-7
IC201
(CPU)
-1
+5V
XT1/P07
Scanner motor
+24VA
-2
73
/SCNRDY
J18
-1
J1-1
-7
-7
-6
-6
M1
+5V
IC202
(G.A.)
DB22
SCNCLK
X1AO
-3
/SCND
-5
-5
54
-5
/SCNCLK
-3
-3
70
-4
GND
-4
-4
-6
24VGND
-2
-2
52
X202
X1AI
M
71
Figure 2-3-4
The scanner motor is a three-phase, eight-pole DC brushless motor with a HALL element. It
forms a unit with the scanner driver, which controls the scanner motor rotation at a constant
speed.
When the printer is turned ON, the oscillation frequency of the crystal oscillator (X202) is
divided by the gate array (IC202), and the /SCNCLK signal is sent to the scanner driver.
When the /PRNT signal sent to the CPU (IC201) on the DC controller becomes “L”, the CPU
sets the /SCND signal to “L” through the gate array. When it goes “L”, the scanner driver rotates
the scanner motor using the SCNCLK signal. When the scanner motor reaches its prescribed
speed, the scanner driver sets the SCANNER MOTOR READY signal (/SCNRDY) signal to “L”.
The CPU on the DC controller PCB monitors the /SCNRDY signal to make sure that the scanner motor runs at the correct speed.
The CPU notifies the video controller of a scanner failure in the following cases:
a. When the /SCNRDY signal does not become “L” within 30 seconds after the scanner motor
starts rotation.
b. When the /SCNRDY signal goes “H” for 1.5 continuous seconds after going “L.”
2 - 30
CHAPTER 2
This page intentionally left blank
2 - 31
CHAPTER 2
IV. IMAGE FORMATION SYSTEM
A. Outline
The image formation system is the central hub of the printer, and consists of the photosensitive
drum, developing unit and charging roller etc.
When the PRINT signal (/PRNT) is sent from the video controller to the DC controller, the DC
controller drives the main motor to rotate the photosensitive drum with the laser diode, developing cylinder, primary charging roller, and transfer charging roller.
The primary charging roller uniformly applies a negative charge on the surface of the photosensitive drum. To form a latent image on the photosensitive drum, the laser beam modulated
by the VIDEO signals (VDO, /VDO) is exposed to the photosensitive drum surface.
The latent image formed on the photosensitive drum is changed to a visible image by the toner
on the developing cylinder then transferred onto paper by the transfer charging roller. Residual
toner on the photosensitive drum surface is scraped off by the cleaning blade. The potential on
the drum is made uniform by the primary charging roller in preparation for the next latent
image.
The cartridge has a toner sensor that detects whether there is enough toner remaining and
whether the cartridge is installed.
If the toner in the cartridge becomes lower than the prescribed level or there is no cartridge
installed in the printer, the high-voltage power supply notifies the DC controller through the
TONER LEVEL signal.
2 - 32
CHAPTER 2
Laser beam
Cartridge
Primary charging roller
Blade
Developing cylinder
Cleaning blade
Manual feeding pick-up roller
Upper fixing roller
Photosensitive
drum
Lower fixing roller
Transfer charging
roller
Static charge
eliminator
Upper cassette
pick-up roller
Lower cassette
pick-up roller
/PRNT
Video
controller
PCB
VDO
/VDO
DC
controller
PCB
Transfer bias drive signal (TRFVCNT)
Transfer negative bias drive signal (/TRFNVD)
Transfer bias monitor signal (TRFVSNS)
Fixing roller bias drive signal (/HRLBD)
Transfer bias constant current drive signal (/TRFCCD)
Discharge bias drive signal (/DCHGBD)
Transfer bias frequency output signal (/TRFCLK)
Discharge bias switch signal (/DCHGUP)
High voltage bias frequency output signal (HVTCLK)
Developing AC bias drive signal (/DEVACD)
Primary AC bias frequency output signal (PR1ACCLK)
Highvoltage
power
supply
Developing AC bias frequency output signal (DEVACCLK)
Primary AC bias drive signal (/PR1ACD)
Developing DC bias drive signal (/DEVDCD)
Primary DC bias drive signal (/PR1DCD)
Image density adjustment signal (DENADJ)
Figure 2-4-1
2 - 33
CHAPTER 2
B. Printing Process
A major portion of the image formation system is contained with a cartridge as shown in Figure
2-4-2.
Laser beam
Primary charging roller
Cartridge
Blade
Cleaning blade
Developing cylinder
Photosensitive drum
Transfer charging roller
Static charge eliminator
Figure 2-4-2
This printer’s cartridge has a seamless photosensitive drum with a two-layer surface shown
in Figure 2-4-3.
The outer layer of the drum consists of an organic photoconductor (OPC) and the base is aluminum.
Photoconductive
layer
Base
Figure 2-4-3
The printing process can be divided into five major stages.
1. Electrostatic latent image formation stage
Step 1 Primary charge (-)
Step 2 Scanning exposure
2. Developing stage
Step 3 Development
3. Transfer stage
Step 4 Transfer (+)
Step 5 Separation
4. Fixing stage
Step 6 Fixing
Step 7 Fixing roller cleaning
2 - 34
CHAPTER 2
5. Drum cleaning stage
Step 8 Drum cleaning
Electrostatic latent image
formation stage
Paper path
Direction of drum rotation
2. Scanning exposure
1. Primary charge
3. Development
Drum cleaning stage
8. Drum cleaning
Fixing stage
Print delivery
7. Fixing rollre cleaning
Developing stage
5. Separation
4. Transfer
Registration
Multi-purpose tray feed
6. Fixing
Transfer stage
Cassette feed
Figure 2-4-4
2 - 35
CHAPTER 2
1. Electrostatic latent image formation stage
This stage follows two steps to produce an electrostatic latent image on the photosensitive drum.
At the end of the stage, negative charges remain on the unexposed “dark” areas, where the
laser beam struck (exposed) the drum surface.
This image of negative charges on the drum is invisible to the eye, so it is referred to as an
called an “electrostatic latent image.”
Surface potential (V)
Time (t)
0
-100
Exposed area
-500
Unexposed
area
Primary
charge
(step 1)
Scanning
exposure
(step 2)
Transfer
(step 4)
Primary
charge
(step 1)
Figure 2-4-5
Step 1 Primary charge
Primary charging roller
AC bias
Photosensitive drum
DC bias
Figure 2-4-6
For preparation of the latent image formation, a uniform negative potential is applied to the photosensitive drum surface. For primary charge, the printer uses the charging method, which
directly charges the drum.
The primary charging roller is made of conductive rubber. In addition to DC bias, AC bias
has been applied to the primary charging roller to keep the potential on the drum’s surface uniform. The DC bias is changed with the developing DC bias.
2 - 36
CHAPTER 2
Step 2 Scanning exposure
Laser beam
Unexposed area
Exposed area
Figure 2-4-7
When the laser beam scans the drum surface, it causes the charge to be neutralized in the areas
struck by the laser beam. These areas on the drum surface form the electrostatic latent image.
2. Development stage
Particles of toner are placed onto the electrostatic latent image on the surface of the drum to create a visible image. This printer uses the toner projection development method with a singlecomponent toner.
Step 3 Development
Stirring
Blade
Photosensitive
drum
Developing cylinder
Cylinder
Magnet
AC bias
DC bias
Figure 2-4-8
Note:
Charges on the exposed area of the photosensitive drum are shown as positive in this
figure. In actuality they are negative, but they are more positive than those on the developing cylinder.
2 - 37
CHAPTER 2
As shown in Figure 2-4-8, the developing unit consists of a developing cylinder and a rubber
blade. The developing cylinder rotates around a fixed internal magnet.
The single-component toner consists of magnetite and a resin binder, and is held to the cylinder by magnetic attraction. The toner is an insulator, and acquires a negative charge from friction of the rotating cylinder.
The areas on the drum that were exposed to the laser beam have a higher potential (are less
negative) than the negatively charged toner particles on the developing cylinder. When these
areas approach the cylinder, the potential difference projects the toner particles to them.
This is called toner projection, making the latent image on the drum visible.
Voltage (V)
Developing cylinder surface potential
+
V
Drum surface potential (exposed area)
0
DC bias
V
Drum surface potential (unexposed area)
Time t
Figure 2-4-9
An AC bias is applied to the developing cylinder to help project the toner particles to the drum
surface and improve the contrast of the printed image. The center voltage of the AC bias (1600
Vp-p) varies with the DC bias voltage. The change in the DC bias changes the potential difference between the cylinder and drum so the density of the print can be adjusted. It can be done
through a command from an external device.
This printer has a stirring mechanism in the cartridge to ensure that toner is applied smoothly to the cylinder.
3. Transfer stage
In the transfer stage, the toner image is transferred from the drum surface to the paper.
Step 4 Transfer
Photosensitive
drum
Paper
Transfer charging roller
Figure 2-4-10
A positive charge applied to the back of the paper attracts the negatively charged toner particles
to the paper.
2 - 38
CHAPTER 2
Reference:
If the image on the photosensitive drum is not completely transferred onto the paper due to jamming, etc., the toner may adhere to the transfer charging roller. The printer removes the toner
from the transfer charging roller by switching the transfer voltage between positive and negative
in the specified sequence. During wait mode, initial rotation, and last rotation, the printer sets
the primary DC voltage to 0V to make the charge on the drum 0V. At the same time, the transfer voltage is set to negative to remove the toner with a negative charge from the transfer charging roller to the drum. The transfer charging roller is cleaned by removing the toner on its surface to the drum.
Step 5 Separation
Photosensitive
drum
Paper
Static charge
eliminator
DC bias
Transfer charging roller
Figure 2-4-11
The stiffness of the paper causes it to separate from the drum. Thin paper or curled sheets to
be duplex printed may not separate, but remain wrapped around the drum. To prevent this, a
negative bias is applied to the static charge eliminator to reduce electrostatic adhesion between
the drum and paper and facilitate separation.
To stabilize the paper feed system and prevent droplets on the printed image at low temperature and humidity, the charge on the back of the paper is reduced by the static charge eliminator after transfer.
2 - 39
CHAPTER 2
4. Fixing stage
The toner image transferred onto the paper in the transfer stage is held only by electrostatic
attraction and a slight physical adhesion, so even a light touch will smear the image.
In the fixing stage, the toner image is fixed by heating the paper and applying pressure. This
fuses the toner particles onto the paper to create a permanent image.
Step 6 Fixing
Halogen heater
Upper fixing roller
Toner
Paper
Lower fixing roller
DC bias
Figure 2-4-12
The upper and lower fixing roller surfaces are covered with teflon tubes with a very low adhesive
property.
The negative DC bias is applied to the upper fixing roller to prevent the toner from adhering
to the rollers.
Step 7 Fixing roller cleaning
Upper roller
Toner
Residual toner
Fixing cleaning roller
Paper
Lower roller
Figure 2-4-13
In the fixing stage, not all the toner particles are fixed to the paper. In some cases, toner particles on the back of the paper are adhered to the lower roller.
The fixing cleaning roller cleans the lower fixing roller by attracting the residual toner on the
lower fixing roller.
2 - 40
CHAPTER 2
5. Drum cleaning stage
In the transfer stage, not all the toner is transferred to the paper. Some remains on the photosensitive drum.
This residual toner is cleaned off in the drum cleaning stage so that the next print image will
be clear and distinct.
Step 8 Drum cleaning
Cleaning blade
Photosensitive
drum
Cleaner container
Sweeper strip
Figure 2-4-14
The residual toner on the drum surface is scraped away with the cleaning blade to clean the
drum surface in preparation for the next print. The removed toner is collected in the cleaner
container.
2 - 41
CHAPTER 2
V. PICK-UP/FEED SYSTEM
A. Outline
Presence of paper on the multi-purpose tray is detected by the multi-purpose tray paper sensor
(PS1301), and presence of paper in the upper and lower cassettes is detected by the cassette
paper-out sensor (PS1207 or PS1208).
If the cassette pick-up motor (SMT1) in the paper pick-up unit rotates for cassette feeding,
pick-up roller, feed roller 1, and separation roller turn to feed a sheet of paper into the printer.
If the manual feed clutch (CL3) in the manual feed pick-up unit engages for manual feeding,
the manual feeding pick-up roller turns and feeds a sheet of paper from the multi-purpose tray
into the printer.
The paper is controlled by the registration roller so that the leading edge of the toner image
on the photosensitive drum matches the leading edge of the paper. The paper is fed, transferred,
then separated from the drum, fed to the fixing unit, and delivered onto the face-up or face-down
tray.
There are four photointerrupters (PS1, PS2, PS1402, and PS1403) on the paper path for sensing paper reaching or passing through each area.
If the paper does not reach or clear each sensor within the pre-set time, the microprocessor
on the DC controller assumes a paper jam has occurred and notifies the video controller.
2 - 42
CHAPTER 2
DC controller PCB
1
2
3
4
Switch/sensor PCB
5
6
7
8
9 10 11 12 13
14
15
16
17
Multi-purpose tray PCB
Pick-up PCB
PS1401
PS1402
PS1403
PS1
PS1301
PS1302
PS2
PS1208
SW1601
SW1602
SW1603
SW1604
SW1601
SW1602
SW1603
SW1604
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
PS1202
PS1205
PS1206
PS1207
PS1201
PS1203
PS1204
: FACE-DOWN TRAY DELIVERY SENSE signal (FDOUTS)
: FACE-DOWN TRAY PAPER FULL SENSE signal (FDFULS)
: FIXING UNIT DELIVERY SENSE signal (/FPOUTS)
: UPPER CASSETTE PAPER-SIZE SENSE signal
: LOWER CASSETTE PAPER-SIZE SENSE signal
: LOWER CASSETTE PAPER-LEVEL SENSE signal 1 (LPVS1)
: LOWER CASSETTE PAPER-LEVEL SENSE signal 2 (LPVS2)
: LOWER CASSETTE SENSE signal (/LDECKC)
: LOWER CASSETTE PAPER-OUT SENSE signal (/LDECKS)
: UPPER CASSETTE PAPER-LEVEL SENSE signal 1 (UPVS1)
: UPPER CASSETTE PAPER-LEVEL SENSE signal 2 (UPVS2)
: UPPER CASSETTE SENSE signal (/UDECKC)
: UPPER CASSETTE PAPER-OUT SENSE signal (/UDECKS)
: REGISTRATION PAPER SENSE signal (/REGS)
: MULTI-PURPOSE TRAY PAPER SENSE signal (/MPTPS)
: LIFTING PLATE SENSE signal (/MPTLS)
: PICK-UP UNIT PAPER SENSE signal (/FEEDS)
PS1: Registration paper sensor
PS2: Pick-up unit paper sensor
PS1201: Lower cassette sensor
PS1202: Upper cassette sensor
PS1203: Lower cassette paper-level sensor 1
PS1204: Lower cassette paper-level sensor 2
PS1205: Upper cassette paper-level sensor 1
PS1206: Upper cassette paper-level sensor 2
PS1207: Lower cassette paper-out sensor
PS1208: Upper cassette paper-out sensor
PS1301: Multi-purpose tray paper sensor
PS1302: Lifting plate position sensor
PS1401: Face-down tray paper full sensor
PS1402: Face-down tray delivery sensor
PS1403: Fixing unit delivery sensor
SW1601: Cassette paper-size sensing switch
SW1602: Cassette paper-size sensing switch
SW1603: Cassette paper-size sensing switch
SW1604: Cassette paper-size sensing switch
Figure 2-5-1
2 - 43
CHAPTER 2
DC controller PCB
1
2
3
4
Switch/sensor PCB
5
6
7
8
Pick-up PCB
Multi-purpose tray PCB
Face-down
delivery roller
MT1
Flapper
Fixing unit
delivery
roller
Face-up
delivery roller
SL3
CL2
CL1
Upper
fixing
roller
CL3
Photosensitive
drum
Transfer
charging
roller
Lower
fixing
roller
Registration
roller
Feed
roller 2
Manual feeding
pick-up roller
Lifting plate
SL2
Pick-up
roller
SL1
Upper cassette
Separation
roller
Feed
roller 1
SMT1
Separation
roller
Lower cassette
1
2
3
4
5
6
7
8
: FACE-UP SOLENOID DRIVE signal (/FUSLD)
: REGISTRATION CLUTCH DRIVE signal (/REGCLD)
: MAIN MOTOR DRIVE signal (MMRDY)
: PICK-UP MOTOR DRIVE signal
: FEED CLUTCH DRIVE signal (/FEEDCLD)
: CASSETTE PICK-UP SOLENOID DRIVE signal (/PUPSLD)
: MANUAL FEED CLUTCH DRIVE signal (/MPTCLD)
: LIFTING PLATE SOLENOID DRIVE signal (/MPTSLD)
Figure 2-5-2
2 - 44
MT1: Main motor
SMT1: Cassette pick-up motor
SL1: Cassette pick-up solenoid
SL2: Lifting plate solenoid
SL3: Face-up solenoid
CL1: Registration clutch
CL2: Feed clutch
CL3: Manual feed clutch
CHAPTER 2
B. Paper Pick-up
1. Pick-up operation
This printer conducts paper pick-up operation by lifting the paper to the paper pick-up position
with the lifter and lowering the rotating cassette pick-up roller to the paper level.
Paper pick-up operation is conducted only when the multi-input tray driver receives the pickup command from the option controller. The pick-up roller is lowered to the paper level by the
rotational force of the main motor (MT1). At the same time, the pick-up roller is rotated by the
rotational force of the pick-up motor.
Paper pick-up operation is conducted as follows.
On receiving the /PRNT from the video controller PCB, the DC controller PCB runs the main
motor (MT1) and the pick-up motor (SMT1). When the cassette pick-up solenoid (SL1) is turned
ON, the main motor rotates the cassette pick-up cam via the gear to drive the shaft drive arm.
At the same time, the rotational force of the pick-up motor is transmitted to the cassette pickup roller via the feed roller gear. As a result, the rotating cassette pick-up roller goes down to
the paper level, picks up a sheet of paper, goes up to the paper pick-up standby position, and
stops rotation.
When the pick-up motor rotates clockwise, the paper is picked up from the upper cassette by
rotating the cassette pick-up roller, feed roller 1 and separation roller of the upper cassette.
When the pick-up motor rotates counterclockwise, the paper is picked up from the lower cassette by driving the cassette pick-up roller, feed roller 1 and separation roller of the lower cassette.
Paper lifting plate
Pick-up roller
Feed roller 1
Cassette pick-up cam
Print paper
Main motor drive
Shaft drive arm
Pick-up roller shaft
Gear
Separation roller
Cassettte pick-up
solenoid
Pick-up motor drive
Lift-up release arm
Feed roller gear
Lift-up cam
Pick-up roller shaft fixing arm
Figure 2-5-3
2 - 45
CHAPTER 2
• Pick-up timing from the upper cassette (A4 : tow pages continuously print)
Power switch ON
(Unit: Seconds)
STBY
PRINT
INTR
LSTR
STBY
PRINT signal (/PRNT)
VERTICAL SYNC signal (/VSYNC)
3.0
Main motor (MT1)
0.06
Pick-up motor (SMT1)
0.5
Cassette pick-up solenoid (SL1)
1.97
0.5
About 1.5
Feed clutch (CL2)
Registration clutch (CL1)
0.06
0.06
0.03
0.03
Pick-up unit paper sensor (PS2)
Registration paper sensor (PS1)
Fixing unit paper sensor (PS1403)
Figure 2-5-4
• Pick-up timing from the lower cassette (A4 : tow pages continuously print)
Power switch ON
(Unit: Seconds)
STBY
PRINT
INTR
PRINT signal (/PRNT)
VERTICAL SYNC signal (/VSYNC)
3.0
Main motor (MT1)
Pick-up motor (SMT1)
Cassette pick-up solenoid (SL1)
Feed clutch (CL2)
Registration clutch (CL1)
Reverse high-speed rotation
0.52
About 1.1
About 1.5
About 0.9
Reverse rotation
0.52
0.06
0.06
0.03
0.03
Pick-up unit paper sensor (PS2)
Registration paper sensor (PS1)
Fixing unit paper sensor (PS1403)
Figure 2-5-5
2 - 46
LSTR
STBY
CHAPTER 2
a. Cassette detection/cassette paper size detection/cassette paper level detection
The upper and lower cassettes detection is executed by the upper cassette sensor (PS1202) and
the lower cassette sensor (PS1201). The paper detection in the upper and lower cassettes is executed by the upper cassette paper out sensor (PS1208) and the lower cassette paper out sensor
(PS1207). The paper size detection is executed by the upper and lower cassette paper size detection switches (SW1601 to SW1604) installed to each cassette. Each cassette has the four
switches. The combinations of the cassette paper size detection switches are shown in Table 25-1.
Table 2-5-1
Cassette paper-size sensing switch
Paper size
SW1601 SW1602
SW1603
SW1604
Ledger
OFF
OFF
OFF
OFF
A3
OFF
ON
OFF
OFF
B4
ON
OFF
OFF
OFF
Legal
ON
ON
OFF
OFF
Letter
OFF
OFF
OFF
ON
A4
OFF
OFF
ON
OFF
The remaining paper level in the cassette is detected according to the lifter position. The lifter
contains a light blocking plate which blocks two sensors on the pick-up PCB. The lifter position
is detected by these sensors. And, as a result, the remaining paper level in the cassette is detected.
The remaining paper level in the upper cassette is detected by the combination of outputs
from the upper cassette paper level sensor 1 (PS1205) and the upper cassette paper level sensor 2 (PS1206). The paper level in the lower cassette is detected by the combination of outputs
from the lower cassette paper level sensor 1 (1203) and the lower cassette paper level sensor 2
(PS1204). Figure 2-5-6 shows the combinations of PS1205/PS1203 and PS1206/PS1204.
2 - 47
CHAPTER 2
Pick-up unit
Pick-up PCB
Remaining
paper level
Remaining number
of sheets (note)
1
Almost full
430 sheetes or more
2
High
200 - 490 sheetes
3
Low
50 - 260 sheetes
4
Almost empty
110 sheetes or less
Note : Plain paper (75g/m2 recommended paper)
1
PS1204 or PS1206
2
PS1203 or PS1205
3
Light blocking
plate
4
Lifter
Figure 2-5-6
2 - 48
CHAPTER 2
b. Lift-up operation
The lift-up operation is executed by the multi-input tray drive motor when a cassette is installed
or the pick-up roller shaft is set lower than certain level due to the paper reduce.
The two cases for the lift-up operation are as follows.
Paper lifting plate
Pick-up roller
Feed roller 1
Cassette pick-up cam
Print paper
Main motor drive
Shaft drive arm
Pick-up roller shaft
Gear
Separation roller
Cassettte pick-up
solenoid
Pick-up motor drive
Lift-up release arm
Feed roller gear
Lift-up cam
Pick-up roller shaft fixing arm
Figure 2-5-7
2 - 49
CHAPTER 2
1) Cassette is installed
➀ When a cassette is installed, the multi-input tray drive motor rotates, and the cassette paper
pick-up solenoid (SL3) is turned ON. Then, the shaft drive arm is driven by the cassette
paper pick-up cam rotation through the gear.
Cassette pick-up cam
Shaft drive arm
Main motor drive
Pick-up roller shaft
Pick-up roller shfat fixing arm
Lifter gear
Cassette pick-up solenoid
Lift-up cam
Figure 2-5-8
2 - 50
CHAPTER 2
➁
As the shaft drive arm goes down, the pick-up roller shaft goes down. Then, the lift-up
release arm is pushed, and the lift-up cam is unfixed. At the same time, the shaft drive arm
is fixed to the pick-up roller shaft fixing arm, and the pick-up roller shaft is stopped in the
designated position.
shaft drive arm
Pick-up roller shaft
Pick-up roller shaft fixing arm
Lift-up release arm
Lift-up arm
Lifter gear
Lift-up cam
Print paper
Paper lifting plate
Figure 2-5-9
➂
The lift up cam starts rotating when unfixed, and the lift up arm pushes up the lifter gear
by one tooth. The paper lifting plate is lifted by repeating this operation.
Main motor drive
Lift-up arm
Lift-up cam
Print paper
Lifter gear
Paper lifting plate
Figure 2-5-10
2 - 51
CHAPTER 2
➃
The pick-up roller shaft is lifted up when the paper on the paper lifting plate touches the
pick-up roller. Then, the fixing arm is released, and the lift-up release arm lifts up the pickup roller shaft to the waiting position by force of the spring. At the same time, the lift-up cam
is fixed by driving the pick-up roller shaft fixing arm and the lift-up release arm. Then, the
lift-up arm is stopped, and the lift-up operation is completed.
• Lift-up operation
Cassette pick-up roller
Pick-up roller shaft
Pick-up roller shaft fixing arm
Shaft drive arm
Lift-up release arm
Lifter gear
Print paper
Paper lifting plate
Lift-up arm
• Completion of lift-up operation
Figure 2-5-11
2 - 52
Lift-up cam
CHAPTER 2
2) Paper level is lower than certain level
➀ As the paper level lowers, the moving distance of the pick-up roller increases. When the
moving distance reaches the specified value, the pick-up roller shaft pushes the lift up
release arm, and the lift up cam is unfixed.
• Certain paper level
Pick-up roller shaft
Cassette pick-up roller shaft
Pick-up roller shaft fixing arm
Moving distance of pick-up roller
Lift-up release arm
Lifter gear
Print paper
Paper lifting plate
Lift-up arm
Lift-up cam
• Less than certain paper level
Falling width of pick-up roller
Figure 2-5-12
2 - 53
CHAPTER 2
➁
When the lift-up cam is unfixed, the lift-up arm lifts up the lifter gear one tooth by the rotation of the lift-up cam. The paper lifting plate is lifted up by repeating the operation. (See
Figure 2-5-10)
➂
When the paper on the paper lifting plate touches the pick-up roller, the pick-up roller shaft
is lifted up. Then, the fixing arm is released, and the lift-up release arm lifts up the pick-up
roller shaft to the waiting position by force of the spring. At the same time, the pick-up roller
shaft fixing arm and the lift up release arm are driven to fix the lift up cam. As a result, the
lift up arm is stopped and lift up operation is competed. (See Figure 2-5-11)
2 - 54
CHAPTER 2
c. Multi-feed prevention mechanism
When feeding from the cassette, the printer uses the separation roller to prevent multi-feeding.
Normally, the separation roller is imparted with a rotational force opposite to that of the feed
roller. However, since the separation roller is equipped with a torque limiter, it rotates with feed
roller 1 by transmission of its rotational force via the transported paper. On the other hand, if
multiple sheets of paper are picked up, the low friction force between the sheets of paper result
in a weak rotational force being transmitted to the separation roller from feed roller 1.
Consequently, the separation roller’s own rotational force separates the extra sheet.
Feed roller 1
Pick-up roller
Print paper
Driving force
transmitted from feed
roller 1
Separation roller
Driving force transmitted from the pick-up motor
through the torque limiter.
Normal
Muitifeed
Figure 2-5-13
2 - 55
CHAPTER 2
2. Manual feed (multi-purpose tray)
The presence of paper on the multi-purpose tray is detected by the multi-purpose tray paper
sensor (PS1301).
When the DC controller receives the /PRNT signal from the video controller, the lifting plate
solenoid (SL2) turns ON, the lifting plate is unlocked (the lifting plate rises), and the paper
touches the pick-up roller.
The lifting plate position is detected by the lifting plate position sensor (PS1302). If the sensor detects that the lifting plate is up while waiting, SL2 is turned ON to lower the lifting plate.
The manual feed clutch (CL3) turns ON, and the main motor (MT1) power is transmitted to
the manual feeding pick-up roller.
Paper pressed against the manual feeding pick-up roller by the lifting plate is picked up by
the pick-up roller. Unnecessary sheets are removed by the separation pad, and one sheet is fed
into the printer by feed roller 2. The subsequent operations are almost the same as for those of
cassette feeding, except that SL2 is turned ON again right after the rotation of the registration
roller to lower the lifting plate.
The CPU turns ON SL2 to lower the lifting plate. If it is normal, the lifting plate position sensor detects the lifting plate within about 0.5 seconds. The CPU notifies the video controller of a
lifting plate position failure if the lifting plate position sensor fails to detect the lifting plate 5
times in a row when the CPU repeats this operation 5 times.
• Pick-up timing from the manual feed (A4 : two pages continuously print)
Power switch ON
(Unit: Seconds)
PRINT
INTR
STBY
PRINT signal (/PRNT)
VERTICAL SYNC signal (/VSYNC)
Main motor (MT1)
Lifting plate solenoid (SL2)
Manual feed clutch (CL3)
About1.1
3.0
0.27
0.03
1.87
0.14
Figure 2-5-14
2 - 56
0.55
2.03
Registration clutch (CL1)
Registration paper sensor (PS1)
0.27
1.87
0.14
LSTR STBY
CHAPTER 2
C. Fixing and Delivery Unit
The upper and lower rollers of the fixing unit, and the face-up and face-down delivery rollers are
driven by the main motor (MT1).
The paper separated from the photosensitive drum is fed into the fixing unit, and sent from
the fixing unit by the fixing roller and fixing unit delivery roller.
The paper sent from the fixing unit is detected by the fixing unit delivery sensor (PS1403).
DC controller PCB
1
2
3
5
4
PS1401
PS1402
Face-down
delivery roller
MT1
Flapper
PS1403
Lower fixing roller
Face-up
delivery roller
SL3
Fixing unit
delivery roller
Upper fixing roller
1
2
3
4
5
: FACE-UP SOLENOID DRIVE signal (/FUSLD)
: FACE-DOWN TRAY DELIVERY SENSE signal (FDOUTS)
: FACE-DOWN TRAY PAPER FULL SENSE signal (FDFULS)
: FIXING UNIT DELIVERY SENSE signal (/FPOUTS)
: MAIN MOTOR DRIVE signal (/MMOTD)
PS1401: Face-down tray paper full sensor
PS1402: Face-down tray delivery sensor
PS1403: Fixing unit delivery sensor
SL3: Face-up solenoid
MT1: Main motor
Figure 2-5-15
2 - 57
CHAPTER 2
The printer switches between face-up and face-down tray delivery with the face-up deflector.
When the FACE-UP SOLENOID DRIVE signal (/FUSLD) becomes “L”, the face-up solenoid (SL3)
moves the face-up deflector to the face-up tray and the paper is delivered through the face-up
tray. If /FUSLD is “H”, the paper is delivered through the face-down tray on the top of the printer.
The paper delivered through the face-down tray is detected by the face-down tray delivery
sensor (PS1402). When the face-down tray becomes full, this is detected by the face-down tray
paper full sensor (PS1401).
2 - 58
CHAPTER 2
D. Paper Jam Detection
The following paper sensors are provided to detect whether paper is present and whether the
paper is fed normally.
• Registration paper sensor (PS1)
• Pick-up unit paper sensor (PS2)
• Fixing unit delivery sensor (PS1403)
• Face-down tray delivery sensor (PS1402)
The microprocessor (CPU) determines whether paper is jammed by checking whether paper
is present or absent at the sensors, at times stored in memory.
If the CPU determines that a jam has occurred, it stops print operation and notifies the jam
to the video controller.
1. Pick-up delay jam 1
The CPU assesses a pick-up delay jam 1 if the paper does not reach the pick-up unit paper sensor (PS2) within the specified period of time after the pick-up operation.
Upper/lower cassettes:
about 6.4 seconds
Duplexing unit (Option): about 2.4 seconds
Paper deck (Option):
about 7.0 seconds
2. Pick-up delay jam 2
The CPU assesses a pick-up delay jam 2 if the registration paper sensor (PS1) cannot detect the
leading edge of the paper within about 0.7 seconds after the pick-up unit paper sensor (PS2)
detects the leading edge of the paper.
The CPU also assesses a pick-up delay jam 2 if the registration paper sensor (PS1) cannot
detect the leading edge of the paper within about 9.5 seconds after start of pick-up operation
from the multi-purpose tray or envelope feeder.
3. Fixing unit delivery delay jam
The CPU assesses a fixing unit delivery delay jam if the leading edge of the paper does not reach
the fixing unit deliver sensor (PS1403) within about 2.2 seconds after receiving the VERTICAL
SYNC signal (/VSYNC).
4. Fixing unit delivery stationary jam
The CPU assesses a fixing unit delivery stationary jam if the trailing edge of the paper does not
pass through the fixing unit delivery sensor (PS1403) within the specified period of time (T1)
after receiving the VERTICAL SYNC signal (/VSYNC).
Ledger=about 5.3 seconds, Legal=about 4.7 seconds, Letter=about 3.8 seconds,
A3=about 5.2 seconds, B4=about 4.8 seconds, A4=about 3.7 seconds
5. Face-down delivery delay jam
The CPU assesses a face-down delivery delay jam if the leading edge of the paper does not reach
the face-down tray delivery sensor (PS1402) within about 3.9 seconds after receiving the VERTICAL SYNC signal (/VSYNC).
6. Face-down delivery stationary jam
The CPU assesses a face-down delivery stationary jam if the trailing edge of the paper does not
pass through the face-down tray delivery sensor (PS1402) within the specified period of time (T2)
after receiving the VERTICAL SYNC signal (/VSYNC).
Ledger=about 7.0 seconds, Legal=about 6.4 seconds, Letter=about 5.5 seconds,
A3=about 6.9 seconds, B4=about 6.5 seconds, A4=about 5.4 seconds
2 - 59
CHAPTER 2
7. Residual paper jam
a. The CPU assesses a residual paper jam if the fixing unit delivery sensor (PS1403) detects the
paper after the power-ON.
b. The CPU assesses a residual paper jam if it does not receive an automatic delivery command
within 3 minutes after notifying the video controller of the presence of paper which can be
automatically delivered out of the printer.
c. The CPU assesses a residual paper jam if one of the following sensors detects the paper after
the printer has performed an automatic delivery of the relevant paper after the power switch
is turned ON and the fixing roller has reached the specified temperature (150°C).
• Registration paper sensor (PS1)
• Pick-up unit paper sensor (PS2)
• Fixing unit delivery sensor (PS1403)
• Face-down tray delivery sensor (PS1402)
2 - 60
CHAPTER 2
VI. OVERALL CONTROL SYSTEM
A. Video Controller PCB
1. Outline
The video controller PCB receives print data consisting of code or image data sent from the external device (host computer, etc.) through the interface cable.
The print data including the contents specified by the control panel is analyzed, processed
and converted into the dot data within this PCB. The dot data is sent to the engine controller
PCB to turn ON/OFF the laser diode.
Figure 2-6-1 shows the location of the ICs on this PCB and Figure 2-6-2 shows the block diagram.
2. Functions by block
a. CPU (IC15)
The CPU is Motorola made 32 bit RISC microprocessor (PPC603e) and its operation frequency is
100MHz. The CPU controls the operation of the video controller PCB according to the control
program stored in the ROM.
b. ASIC (IC21)
The ASIC is a graphic co-processor and has the following functions.
1) DRAM control
2) ROM control
3) Video interface control
4) IEEE 1284 parallel port interface control
5) I/O bus interface support
c. AIR (IC2)
The smoothing control circuit and SRAM are built in the AIR.
Its main functions are as follows.
1) Image smoothing control
2) EEPROM control
3) Control panel interface control
d. DRAM
8-MB DRAM is installed on the video controller PCB.
72 pin DIMM of 4-MB, 8-MB or 16-MB can be installed in the 2 slots on the PCB.
e. ROM DIMM
4-MB ROM is installed on the video controller PCB. In addition, a ROM is installed on the
firmware ROM DIMM. The ROM DIMM is installed in the connector J4 on the video controller
PCB.
The user can install 4-MB or 8-MB ROM DIMM in the left connector J2 and the middle connector J3. The right connector J4 is exclusively for the firmware ROM DIMM.
f. EEPROM (IC11)
The EEPROM has a memory capacity of 4-KB and is used to store the factory default values and
values modified by the control panel.
2 - 61
CHAPTER 2
J2 J3 J4
J1
ROM DIMM 2
ROM DIMM 1
ROM DIMM 0
J10
J11
IC27
EEPROM
AIR
IC2
IC10
IC15
ASIC
CPU
RAM DIMM 1
RAM DIMM 0
J6 J7
J9
DRAM
(16M)
DRAM
(16M)
DRAM
(16M)
DRAM
(16M)
J8
Figure 2-6-1
2 - 62
CHAPTER 2
Video contoroller PCB Block Diagram
for option
(72pin, 2slot)
<J2/3>
MASK ROM
(4MB)
CPU
Extension I/O
ROM Cont.
ROM Cont.
ROM Cont.
I/O Cont.
A [26:8]
for hard disk
(44pin, 2.1GB)
PPC603e (100/33)
Hard disk I/O
LVC827 ✕ 2
A [31:0]
LVCR2245 ✕ 2
IOA [23, 17:2]
nD0E
LVTH245 ✕ 4
IOD [15:0]
LVTH245 ✕ 4
nGCS
LVCR2245 ✕ 2
AD [31:0]
<J8>
Option controller I/F
nA0E
IOD [11:0]
RESET
I/O Cont.
IOA [6:2]
CPUCLK (33.3MHz)
nRESET
IOA [4:2]
D [31:0]
I/O Cont.
<J9>
nA8 LSYNC, VCLK
nA8 VDO
ASIC
Buffer
IEEE1284
EEPROM
AIR
X´TAL
(14.37038MHz)
MA [10:0], nCAS [3:0], nWE
nVDO
MD [31:0]
nRAS [7:0]
Note
to DC controller
(48pin)
LVCR2245 ✕ 2
X´TAL
(66.6666MHz)
<J1>
Engine
to host computer
(36pin)
Cont.
for option controller
(20pin)
JTAG
<J11>
ROM DIMM
Firm DIMM
IOA [23, 17:2]
<J4>
for network board
(50pin, PSIO)
: Operates at 5V
: 5V signals
RAM (8MB)
RAM DIMM
<J6/7>
for option
(72pin, 2slot)
Figure 2-6-2
2 - 63
CHAPTER 2
B. Control Panel
1. Outline
The control panel contains a LCD (20 characters x 2 lines), 9 switches, and 7 LEDs.
The control panel is connected to the video controller PCB and has the functions listed below.
a. Displays status and error messages in the LCD.
b. Displays operation condition with the LED.
c. Changes Menus and values with the switches.
2. Operation
The LCD and LEDs on the control panel are controlled by the signals output from the video controller. The signals generated by the switches on the panel are input to the video controller.
Video controller PCB
DC controller PCB
Control panel
IC10
LEDs
AIR
J6-C13
nFP CLK
J3-3
J6-A14
nFP CS
J3-4
J6-C14
nFP DI
J3-5
J6-B14
nFP OD
J3-6
CPU
Switches
Beeper
LCD
Figure 2-6-3
2 - 65
CHAPTER 2
C. Self Test
The printer executes the self diagnostic program of the video controller to check the condition of
the video controller at the power-ON. This function is called self test.
There are two types of self tests: power-ON self test and power-ON key sequence.
1. Power-ON self test
Every time the printer is turned ON, the power-ON self test is conducted following the procedure
stated below.
1) Tests all the DRAMs on the video controller. Error found here will be displayed in the LCD
as a service call.
2) Tests the program ROM, font ROM and optional ROM. Error found here will be displayed in
the LCD as a service call.
3) Checks inside of the CPU. Error found here will be displayed in the LCD as a service call.
4) Completes the test. If an error is reported from the engine controller at this point, it will be
displayed in the LCD.
5) Displays "READY" in the LCD and prints the PCL demo-page automatically.
2. Power-ON key sequence
Pressing specified keys simultaneously at the power-ON executes the specific functions. Among
the following operations, only the Cold Reset sequence is for the user.
a. Cold Reset
Turn ON the printer with the On Line key pressed.
The Cold Reset resets all the printer settings to the factory default values.
b. Check Sum Functions
Turn ON the printer with the On Line and Enter keys pressed (PPG Check Sum). Or, turn ON
the printer with the On Lien and Reset keys pressed (PS Check Sum).
The printer performs the check sum on the requested ROM bank. The calculated check sum
will be displayed in the LCD.
c. Factory Reset Function (A4/LTR)
To reset the paper size default to A4, turn ON the printer with the Menu, Item and Shift keys
pressed.
To reset the paper size default to Letter, turn ON the printer with the Menu, Item, and
Plus/Minus keys pressed.
The printer uses the selected paper size (A4/Letter) as the default value, resets the page count
to "0", and executes the Cold Reset. The Cold Reset executed hereafter will maintain the paper
size selected here.
d. Panel Check Function
The Panel Check Function performs the control panel diagnosis and test sequence. The
sequences in the Panel Check Function are as follows.
1) Turn ON the printer with the On Line and Shift keys pressed. "PANEL CHECK" message will
appear in the LCD.
2) Step 3 to 11 can be executed as many times as you wish in any order.
3) Pressing the On Line key illuminates the top left half of the LCD (10 columns). Releasing the
key will clear the display.
4) Pressing the Continue key illuminates the top right half (10 columns) of the LCD. Releasing
the key will clear the display.
5) Pressing the Form Feed key illuminates the top line of the LCD (20 columns). Releasing the
key will clear the display.
2 - 66
CHAPTER 2
6) Pressing the Reset key illuminates the every other column of the top line of the LCD.
Releasing the key will clear the display.
7) Pressing the Enter key displays "OPERATION CHECK" message. Releasing the key will clear
the message.
8) Pressing the Menu key displays "OPERATION CHECK" message. Releasing the key will clear
the message.
9) Pressing the Item key displays "OPERATION CHECK" message. Releasing the key will clear
the message.
10) Pressing the Shift key illuminates the top line of the LCD (20 columns). Releasing the key
will clear the display.
11) Pressing the +Plus/-Minus key displays "OPERATION CHECK" message. Releasing the key
will clear the message.
12) When all the keys have been tested, "PANEL CHECK DONE" message appears and the DISK,
STAPLE and CONTINUE LEDs keep flashing. The message starts to move in circles in about
60 seconds. This conditions is kept until the printer is turned OFF.
e. Update flash
Turn ON the printer with the Enter and Shift keys pressed.
This function supplies the flash menu for managing/down loading the firmware.
2 - 67
CHAPTER 2
2 - 68
CHAPTER 3
THE MECHANICAL SYSTEM
I.
PREFACE ............................... 3-1
V.
II.
EXTERNALS ........................... 3-2
VI. CLUTCHS/SOLENOIDS ........... 3-31
III. MAIN UNITS ........................... 3-8
VII. MOTORS/FANS ...................... 3-35
IV.
VIII. PCBS ...................................... 3-41
MAIN PARTS .......................... 3-15
SWITCHES/SENSORS ............. 3-24
CHAPTER 3
I. PREFACE
This chapter describes disassembly and reassembly procedures of the printer.
The service technician is to find the factor of the failure according to the "Chapter 4
Troubleshooting" and to follow the disassembly procedures in this chapter to replace the defective part(s). Replacement of consumable part(s) is also to be conducted according to the procedures described in this chapter.
Note the following precautions during disassembly or reassembly.
1. At disassembly, reassembly, or transportation of the printer, remove the toner cartridge as
necessary. When the cartridge is out of the printer, put it in a protective bag to prevent light
from affecting it.
2.
CAUTION: Before servicing the printer, disconnect its power cord from the electrical outlet.
3. Assembly is the reverse of disassembly unless otherwise specified.
4. Note the lengths, diameters, and locations of screws as you remove them. When reassembling the printer, be sure to use them in their original locations.
5. As a general rule, do not operate the printer with any parts removed.
6. Discharge electrical static from your body by touching the metal frame of the printer prior to
handling the PCBs in order to avoid causing damage by the difference in static charge at that
time.
3-1
CHAPTER 3
II. EXTERNALS
A. Locations
➀
➁
➂
➃
➄
➅
➆
➈
➇
➉
11
12
13
14
1: Upper cover unit
3: Face-down tray
5: Right rear cover
7: Pick-up unit door
9: Front cover
11: Face-up tray
13: Left rear cover
2: Operation panel unit
4: Upper cover
6: Multi-purpose tray
8: Duplexing unit door
10: Delivery cover unit
12: Left lower cover
14: Rear cover
Figure 3-2-1
Follow the procedures below to remove the cover(s) as required when cleaning, inspecting, or
repairing inside the printer.
The procedures for the covers, which can be removed simply by removing screws without
removing other parts, are omitted.
3-2
CHAPTER 3
1. Face-down tray
1) Open the upper cover.
2) Holding the knob, remove the lock lever.
Close the upper cover and then take out
the face-down tray.
5) Open the delivery cover unit and
unhook the claw.
➁
➀
➃
➀
➀ Upper cover
➂ Lock lever
➀ Delivery cover unit
➁ Claw
➁
➂
➁ Knob
➃ Face-down tray
Figure 3-2-4
6) Open the pick-up unit door, unhook the
claw, and then remove the front cover.
Figure 3-2-2
2.
1)
2)
3)
4)
Front cover
Remove the upper cassette.
Open the upper cover.
Open the duplexing unit door.
Remove the 3 screws.
➁
➁
➂
➀
➀ Pick-up unit door
➁ Claw
➂ Front cover
➀
Figure 3-2-5
➀ Duplexing unit door
➁ Screws
Figure 3-2-3
3-3
CHAPTER 3
4) Pulling the knob toward you, lift the
upper cover unit and disconnect the
connector from the inside.
3. Upper cover unit
1) Remove the face-down tray.
2) Remove the 2 screws.
➁
➀
➀
➀ Screws
➀ Knob
➁ Upper cover unit
Figure 3-2-6
Figure 3-2-8
3) Open the delivery cover unit and then
remove the 2 screws.
5) Unhook the 2 claws and then remove
the control panel unit.
➁
➀
➀
➀ Screws
➀ Claws
Figure 3-2-7
3-4
➁ Control panel unit
Figure 3-2-9
CHAPTER 3
4.
1)
2)
3)
Rear cover
Open the upper cover.
Open the pick-up unit door.
Remove the 2 screws, unhook the claw,
and then remove the right rear cover.
➂
5. Delivery cover unit
1) Open the delivery cover unit.
2) Remove the 2 rods that hold the delivery
cover unit to the printer.
3) Lifting up the delivery cover unit slightly, remove the right and then the left
side of the unit.
➁
➀
➁
➀ Screws
➂ Right rear cover
➁ Claw
➀
➀ Delivery cover unit
➁ Rods
Figure 3-2-10
Figure 3-2-12
4) Remove the 6 screws and then the rear
cover.
➁
6. Multi-purpose tray
1) Open the multi-purpose tray.
2) Unhook the 2 claws that hold the multipurpose tray to the printer and pull out
the tray toward you.
➁
➀
➀ Screws
➁ Rear cover
Figure 3-2-11
➀
➀ Claws
➁ Multi-purpose tray
Figure 3-2-13
3-5
CHAPTER 3
7.
1)
2)
3)
4)
Right cover unit
Remove the upper and lower cassettes.
Remove the front cover.
Remove the right rear cover.
Remove the hinge and then the 4 screws
from the right cover unit.
➀
8.
1)
2)
3)
Left rear cover
Remove the rear cover.
Open the delivery cover unit.
Remove the 3 screws and then the left
rear cover.
➁
➀
➁
➂
➀ Screws
➀ Right cover unit ➁ Hinge
➂ Screws
➁ Left rear cover
Figure 3-2-16
Figure 3-2-14
5) Unhook the 2 claws from the inside and
then remove the right cover unit.
➀
➀ Claws
9.
1)
2)
3)
4)
5)
Left lower cover
Remove the upper and lower cassettes.
Remove the rear cover.
Remove the left rear cover.
Remove the delivery cover unit.
Remove the 2 screws.
➁
➁ Right cover unit
➀
Figure 3-2-15
➀ Screws
Figure 3-2-17
3-6
CHAPTER 3
6) Unhook the 2 claws from the inside and
then remove the left lower cover.
➁
B. Control Panel Unit
1) Remove the front cover.
2) Unhook the 2 claws. Lifting the control
panel unit, disconnect the connector
from the inside.
➀
➀ Claws
➁ Left lower cover
➁
➀
Figure 3-2-18
➀ Claws
➁ Control panel unit
Figure 3-2-19
3-7
CHAPTER 3
III. MAIN UNITS
A. Laser/Scanner Unit
1) Remove the upper cover unit.
2) Disconnect the 3 connectors from the
laser/scanner unit.
B. Drive Unit
1) Remove the pick-up unit following steps
1-7 on Page 3-9.
2) Remove the screw, and then the cassette stay.
➁
➀
➀
➀ Screw
➁ Cassette stay
➀ Connectors
Figure 3-3-3
Figure 3-3-1
3) Remove the 4 screws and the laser/
scanner unit.
3) Disconnect the claw, and then the
clutch cover.
➁
➀
➀
➁
➀ Claw
➀ Screws
➁ Clutch cover
➁ Laser/scanner unit
Figure 3-3-4
Figure 3-3-2
Note:
3-8
Do not disassemble the laser/scanner unit as it cannot be adjusted in
the field
CHAPTER 3
4) Remove the high-voltage power supply
unit following steps 1-3 on Page 3-47.
5) Undo the connector, remove the 4
screws and then the main motor.
6) Remove the 2 screws and the drive unit.
➁
C. Pick-up Unit
1) Pull out the upper and lower cassettes.
2) Perform steps 1-6 on Page 3-12 to
remove the multi-purpose tray pick-up
unit.
3) Remove the right cover.
4) Undo the connector and remove the
cable from the cable guide.
➀
➁
➀
➂
➀ Screws
➁ Drive unit
Figure 3-3-5
➀ Connector
➂ Cable guide
➁ Cable
Figure 3-3-6
5) Perform steps 1-2 on Page 3-17 to
remove the pick-up, feed and separation
rollers.
6) Remove the screw (M3x10).
7) Remove the 3 screws (M3x8), and take
out the pick-up unit.
➁
➂
➀ Screw (M3×10)
➂ Pick-up unit
➀
➁ Screw (M3×8)
Figure 3-3-7
3-9
CHAPTER 3
Notes: 1. While replacing parts in the
pick-up unit, to prevent grease
from getting on the pick-up, feed
and separation rollers, be sure
to remove them before working
on the unit. Take care not to get
grease on the paper feed guide.
2. Be sure to grease the parts
shown in figure 3-3-8 when
exchanging, to prevent noise.
The type of grease (do not use
grease other than the specified
type) and the method of application is explained below:
Apply about one drop (1mm
diameter) of HY9-0007 to the
contact surface (a) of the roller
holder (1) and shaft (2).
Apply a few drops (total:5mm
diameter) of CK-8009 to 3 or
more continuous cogs of the
parts 3 to 9.
Apply CK-8009 to the whole cog
surface of the lifter (10) thinly.
3 - 10
CHAPTER 3
➂
➃
➄
➅
➀
a
➆
➇
➁
➉
➁
➀
a
➉
➀
➂
➄
➆
➈
Roller holder
57T gear
Pick-up cam
20T/41T gear
31T/47T gear
➁
➃
➅
➇
➉
➈
Shaft
Upper lift-up cam
100T gear
Lower lift-up cam
Lifter
Figure 3-3-8
3 - 11
CHAPTER 3
D.
1)
2)
3)
4)
5)
Multi-purpose Tray Pick-up Unit
Remove the front cover.
Remove the rear cover.
Remove the multi-purpose tray.
Open the pick-up unit door.
Disconnect the 2 connectors, and then
remove the cable from the cable guide.
E.
1)
2)
3)
Registration Roller Unit
Open the upper cover.
Remove the clutch cover.
Open the transfer charging roller guide.
➀
➀
➂
➀ Transfer charging roller guide
➁
➀ Connectors
➂ Cable
➁ Cable guide
Figure 3-3-9
Figure 3-3-11
4) Undo the connector.
5) Remove the 4 screws and take out the
registration roller unit.
6) Remove the 4 screws, and then the
multi-purpose tray pick-up unit.
➀
➁
➀
➂
➁
➀ Connector
➁ Screws
➂ Registration roller unit
➀ Screws
➁ Multi-purpose tray pick-up unit
Figure 3-3-12
Figure 3-3-10
3 - 12
CHAPTER 3
F.
1)
2)
3)
4)
5)
Delivery Unit
Remove the upper cover unit.
Remove the front cover.
Remove the right rear and rear covers.
Remove the left rear cover.
Disconnect the connector and remove
the 3 screws.
G. Fixing Unit
1) Open the delivery cover unit.
2) Move the 2 fastening levers of the fixing
unit in the direction of the arrow, slightly lift the fixing unit, and pull it out
toward you.
➀
➀
➁
➁
➀ Connector
➀ Fixing unit fastening levers
➁ Fixing unit
➁ Screws
Figure 3-3-15
Figure 3-3-13
6) Remove the 2 screws.
7) Slightly lift the delivery unit up then
pull it out toward you.
➁
➀
➀ Screws
➁ Delivery unit
Figure 3-3-14
3 - 13
CHAPTER 3
Notes: 1. When replacing the fixing unit,
be sure to confirm the location
of the fixing unit envelope lever
before replacement and then
position it the same way after
installing the new fixing unit.
H. Feed Unit
1) Remove the registration roller unit following steps 1-5 on Page 3-12.
2) Remove the transfer charging roller.
3) Remove the fixing unit following steps
1-2 on Page 3-13.
4) Remove the high-voltage power supply
unit following steps 1-2 on Page 3-47.
5) Remove the screw.
➁
➀
➀
➀ Normal mode
➁ Envelope mode
➀ Screw
Figure 3-3-16
Figure 3-3-17
2. Make sure to turn the power
OFF and unplug the power cord
before replacing the fixing unit.
After power-OFF, wait for a
while to allow the fixing unit to
cool down.
6) Disconnect the connector.
7) Remove the 2 screws.
8) Remove the 4 claws and then the feed
unit.
➂
➀
➃
➁
➀ Connector
➂ Claws
➁ Screws
➃ Feed unit
Figure 3-3-18
3 - 14
CHAPTER 3
IV. MAIN PARTS
A. Locations
➆
➄
➃
➀
➅
➁
➇
➂
➈
➀
➂
➄
➆
➈
Multi-purpose tray pick-up roller
Pick-up/Feed/Separation rollers
Transfer charging roller
Fixing upper roller
Cleaning roller
➂
➁
➃
➅
➇
Separation pad
Registration lower roller
Fixing roller heater
Fixing lower roller
Figure 3-4-1
3 - 15
CHAPTER 3
B. Multi-purpose Tray Pick-up Roller
1) Open the multi-purpose tray.
2) Remove the cover.
C.
1)
2)
3)
Separation Pad
Open the multi-purpose tray.
Remove the cover.
Remove the multi-purpose tray pick-up
roller.
4) Use a flat-bladed screwdriver to remove
the separation pad.
➀
➀ Cover
➀
Figure 3-4-2
➀ Separation pad
3) While pressing the lifting plate, grasp
the multi-purpose tray pick-up roller
knob, and pull out the roller.
➁
➀
➀ Lifting plate
➁ Multi-purpose tray pick-up roller
Figure 3-4-3
3 - 16
Figure 3-4-4
CHAPTER 3
D. Pick-up/Feed/Separation Rollers
1) Pull out the upper and lower cassettes.
2) Grasp the knobs of each roller and pull
the rollers out of the printer.
➁
➀
E. Registration Lower Roller
1) Remove the registration roller unit following steps 1-5 on Page 3-12.
2) Remove the registration clutch.
3) Remove the spring, the E-ring and the
bushing.
➂
➁
➀
➀
➂
➂
➁
➀ Pick-up roller
➁ Feed roller
➂ Separation roller
➀ Spring
➂ Bushing
➁ E-ring
Figure 3-4-5
Figure 3-4-7
➀
4) Remove the gear, the spring, the E-ring,
the bushing, and then the registration
lower roller.
➂
➁
➀ Pick-up roller
➁ Feed roller/Separation roller
➀
➄
➁
➃
Figure 3-4-6
Note:
Be sure to replace the feed roller
and the separation roller together.
➀
➁
➂
➃
➄
Gear
Spring
E-ring
Bushing
Registration lower roller
Figure 3-4-8
3 - 17
CHAPTER 3
F.
1)
2)
3)
Transfer Charging Roller
Open the upper cover.
Open the transfer charging roller guide.
Pinch the gear, lift it slightly, and slide
it to the left.
Remove the transfer
charging roller.
G. Fixing Roller Heater
1) Remove the fixing unit following steps
1-2 on Page 3-13.
2) Disconnect the 2 claws that hold the
wire cover to the fixing unit, and then
remove the wire cover.
➁
➁
➂
➀
➀ Transfer charging roller guide
➁ Gear
➂ Transfer charging roller
➀
➀
➀ Claws
➁ Wire cover
Figure 3-4-10
Figure 3-4-9
3) Unhook the claw, and then remove the
fixing entry guide.
< Notes for reassembly >
Hold the shaft and bushing, not the sponge
area, of the transfer charging roller when
installing the roller.
➁
➀
➀ Claw
➁ Fixing entry guide
Figure 3-4-11
3 - 18
CHAPTER 3
H. Fixing Upper Roller
1) Remove the fixing unit following steps
1-2 on Page 3-13.
2) Hold up the left and right levers in the
direction of the arrow.
3) Remove the 2 screws.
4) Remove the claw then remove the separation upper guide while pulling out the
separation lower guide.
4) Take out the 4 connectors.
➁
➀
➂
➄ ➁
➀
➀ Connectors
Figure 3-4-12
5) Disconnect the heater claw of the holder and remove the holder. Then, gently
pull out the fixing heater from the fixing
upper roller.
➀
➀
➁
➂
➃
➄
➃
➀
Fixing unit fastening levers
Screws
Claw
Separation lower guide
Separation upper guide
➁
Figure 3-4-14
➀
➂
➀ Claw
➁ Heater holder
➂ Fixing roller heater
Figure 3-4-13
3 - 19
CHAPTER 3
5) Remove the E-ring and the spring, then
pull out the separation lower guide
toward you and slide it off in the direction of the arrow.
9) Remove the screw and diode holder.
10) Remove the screw and the right fixing
cover.
➃
➂
➀
➁
➁
➂
➀ E-ring
➁ Spring
➂ Separation lower guide
➀
➀ Screw
➂ Screw
➁ Diode holder
➃ Right fixing rcover
Figure 3-4-16
Figure 3-4-15
6) Remove the fixing roller heater following
steps 2-5 on Page 3-18.
7) Remove the thermoswitch following step
3 on Page 3-25.
8) Remove the thermistor following steps
3-4 on Page 3-26.
11) Remove the 2 screws (M3), stepped
screw, and then the left fixing cover.
12) Remove the 4 gears.
➂
➀
➁
➀ Screws (M3)
➂ Left fixing cover
➁ Stepped screw
Figure 3-4-17
3 - 20
CHAPTER 3
13) Remove the screw, and the thermoswitch stay.
15) Remove the grounding ring.
➀
➁
➀
➀ Grounding ring
➀ Screw
➁ Thermoswitch stay
Figure 3-4-20
Figure 3-4-18
16) Remove the C-ring and the gear.
14) Remove the screw, undo the 2 claws,
and take off the fixing roller cover.
➂
➀
➀
➁
➀ C-ring
➁ Gear
➁
➀ Screw
➁ Claw
➂ Fixing roller cover
Figure 3-4-21
Figure 3-4-19
3 - 21
CHAPTER 3
I. Fixing Lower Roller
1) Remove the fixing unit following steps
1-2 on Page 3-13.
2) Remove the fixing upper roller following
steps 2-19 from Page 3-19.
3) Remove the fixing lower roller.
17) Removing the insulating bushing.
➀
➀
➀ Insulating bushing
Figure 3-4-22
➀ Fixing lower roller
18) Remove the C-ring, O-ring and insulating bushing.
19) Remove the bearing and the fixing
upper roller.
➂
➀
➁
➃
➀
➁
➂
➃
➄
C-ring
O-ring
Insulating bushing
Bearing
Fixing upper roller
Figure 3-4-23
3 - 22
➄
Figure 3-4-24
CHAPTER 3
J. Cleaning Roller
1) Remove the fixing unit following steps
1-2 on Page 3-13.
2) Remove the fixing lower roller following
steps 2-3 on Page 3-22.
3) Remove the cleaning roller.
➀
➀ Cleaning roller
Figure 3-4-25
3 - 23
CHAPTER 3
V. SWITCHES/SENSORS
A. Locations
20
19
21
➁
➂
➅
18
17
➄
16
➉
14
➀
13
➇
12
11
➃
15
➈
➆
1: Thermoswitch
3: Upper cassette paper-size sensing switch
5: Thermistor
7: Pick-up unit paper sensor
9: Lower cassette sensor
11: Lower cassette paper-level sensor 1
13: Upper cassette paper-level sensor 1
15: Lower cassette paper-out sensor
17: Multi-purpose tray paper sensor
19: Face-down tray paper full sensor
21: Fixing unit delivery sensor
2: Door switch
4: Lower cassette paper-size sensing switch
6: Registration paper sensor
8: Pick-up unit door sensor
10: Upper cassette sensor
12: Lower cassette paper-level sensor 2
14: Upper cassette paper-level sensor 2
16: Upper cassette paper-out sensor
18: Lifting plate position sensor
20: Face-down tray delivery sensor
Figure 3-5-1
3 - 24
CHAPTER 3
B. Thermoswitch
1) Remove the fixing unit following steps
1-2 on Page 3-13.
2) Remove the wire cover.
3) Remove the 2 screws and then the lead
wire and the thermoswitch.
C. Door Switch
1) Remove the switch/sensor PCB following steps 1-10 on Page 3-45.
➀
➁
➀ Screws
➁ Thermoswitch
Figure 3-5-2
3 - 25
CHAPTER 3
D. Upper Cassette Paper-size Sensing
Switch/Lower Cassette Paper-size
Sensing Switch
1) Remove the cassette paper-size sensing
PCB following steps 1-4 on Page 3-47.
E. Thermistor
1) Remove the fixing unit following steps
1-2 on Page 3-13.
2) Remove the wire cover.
3) Remove the fixing entry guide.
4) Disconnect the connector and remove
the cable from the fixing left cover.
➁
➂
➀ Connector
➂ Cable
➀
➁ Fixing left cover
Figure 3-5-3
5) Remove the screw and the thermistor.
➁
➀
➀ Screw
➁ Thermistor
Figure 3-5-4
<Note on reassembly>
When installing the thermistor, ensure that
its detection surface is uniformly contacting the fixing upper roller surface.
If it is not making an uniform contact,
3 - 26
CHAPTER 3
check that the plate spring has not
deformed.
F. Registration Paper Sensor
1) Remove the feed unit following steps 17 on Page 3-14.
2) Disconnect the connector from the back
of the feed unit, and then remove the
registration paper sensor.
3 - 27
CHAPTER 3
G. Pick-up Unit Paper Sensor
1) Remove the pick-up unit following steps
1-7 on Page 3-9.
2) Disconnect the connector, and then
remove the 2 claws and the sensor unit.
H. Pick-up Unit Door Sensor
1) Remove the pick-up PCB following steps
1-3 on Page 3-44.
2) Remove the 2 screws.
3) Unhook the 2 claws and remove the
gear cover.
➂
➂
➀
➀
➁
➀ Connector
➂ Sensor unit
➁
➁ Claws
➀ Screws
➂ Gear cover
➁ Claws
Figure 3-5-5
Figure 3-5-6
3) Remove the pick-up unit paper sensor
from the sensor unit.
3 - 28
4) Disconnect the connector from the gear
cover, and remove the pick-up unit door
sensor.
CHAPTER 3
I.
Lower Cassette Sensor/Upper
Cassette Sensor/Lower Cassette
Paper-level Sensor 1/Lower Cassette
Paper-level Sensor 2/Upper Cassette
Paper-level Sensor 1/Upper Cassette
Paper-level Sensor 2/Lower Cassette
Paper-out Sensor/Upper Cassette
Paper-out Sensor
1) Remove the pick-up PCB following steps
1-3 on Page 3-44.
J. Multi-purpose Tray Paper Sensor
/Lifting Plate Position Sensor
1) Remove the Multi-purpose tray PCB following steps 1-7 on Page 3-44.
3 - 29
CHAPTER 3
K. Face-down Tray Paper Full Sensor
/Face-down Tray Delivery Sensor
/Fixing Unit Delivery Sensor
1) Remove the switch/sensor PCB following steps 1-11 on Page 3-45.
3 - 30
CHAPTER 3
VI. CLUTCHS/SOLENOIDS
A. Locations
➅
➄
➂
➀
➁
➃
➀ Multi-purpose tray pick-up clutch
➂ Registration clutch
➄ Cassette pick-up solenoid
➁ Feed clutch
➃ Lifting plate solenoid
➅ Face-up solenoid
Figure 3-6-1
3 - 31
CHAPTER 3
B. Multi-purpose Tray Pick-up Clutch
1) Remove the multi-purpose tray pick-up
unit following steps 1-6 on Page 3-12.
2) Disconnect the 2 connectors.
3) Remove the 2 screws, the clutch cover
unit, and then the multi-purpose tray
pick-up clutch.
C. Feed Clutch
1) Remove the pick-up unit following steps
1-7 on Page 3-9.
2) Disconnect the connector.
3) Remove the screw, and disconnect the 2
claws to remove the pick-up PCB.
➀
➂
➀
➁
➂
➃
➃
➁
➀
➁
➂
➃
Connector
Screws
Clucth cover unit
Multi-purpose tray pick-up clutch
Figure 3-6-2
➀ Connector
➂ Claws
➁ Screw
➃ Pick-up PCB
Figure 3-6-3
4) Undo the claw and remove the clutch
fixing plate.
5) Remove the E-ring, and then the feed
clutch.
➀
➁
➂
➃
➀ Claw
➂ E-ring
➁ Clutch fixing plate
➃ Feed clutch
Figure 3-6-4
3 - 32
CHAPTER 3
D. Registration Clutch
1) Remove the registration roller unit following steps 1-5 on Page 3-12.
2) Remove the E-ring and the registration
clutch.
E. Lifting Plate Solenoid
1) Remove the multi-purpose tray pick-up
unit following steps 1-6 on Page 3-12.
2) Disconnect the connector.
3) Remove the screw and then the lifting
plate solenoid.
➀
➁
➁
➂
➀
➀ E-ring
➁ Registration clutch
Figure 3-6-5
➀ Connector
➁ Screw
➂ Lifting plate solenoid
Figure 3-6-6
3 - 33
CHAPTER 3
F. Cassette Pick-up Solenoid
1) Remove the pick-up unit following steps
1-7 on Page 3-9.
2) Disconnect the connector.
3) Remove the screw and take out the cassette pick-up solenoid.
G. Face-up Solenoid Unit
1) Remove the delivery unit following steps
1-7 on Page 3-13.
2) Disconnect the connector.
3) Remove the screw and then the face-up
solenoid unit
➀
➂
➂
➁
➀
➀ Connector
➁ Screw
➂ Cassette pick-up solenoid
Figure 3-6-7
3 - 34
➁
➀ Connector
➁ Screw
➂ Face-up solenoid unit
Figure 3-6-8
CHAPTER 3
VII. MOTORS/FANS
A. Locations
➄
➂
➅
➀
➆
➃
➁
➀
➂
➄
➆
Main motor
Fixing unit/scanner unit fan
Electrical unit fan
Multi-purpose tray pick-up unit fan
➁ Pick-up motor
➃ Power supply fan
➅ Fixing unit fan
Figure 3-7-1
3 - 35
CHAPTER 3
B. Main Motor
1) Remove the high-voltage power supply
unit following steps 1-3 on Page 3-47.
2) Undo the connector, remove the 4
screws and then the main motor.
➂
C. Pick-up Motor
1) Remove the pick-up unit following steps
1-7 on Page 3-9.
2) Undo the connector.
3) Remove the 2 screws, and slide the
pick-up motor out in the direction of the
arrow.
➁
➂
➁
➀
➀ Connector
➂ Main motor
➁ Screws
➀
➀ Connector
➂ Pick-up motor
➁ Screws
Figure 3-7-2
Figure 3-7-3
3 - 36
CHAPTER 3
D. Fans
1. Summary
There are 4 fan motors installed to circulate air within the printer and prevent
the internal temperature from rising.
• Fixing unit/scanner unit fan (FM1):
Blows air from the fixing unit and the
scanner unit vicinity.
• Power supply fan (FM2):
Blows air from the power supply.
• Electrical unit fan (FM3):
Intake fan for the video controller unit.
• Fixing unit fan (FM4):
Blows air from the fixing unit vicinity.
• Multi-purpose tray pick-up unit fan
(FM5):
Blows air to the cartridge and
laser/scanner unit vicinity.
2.
1)
2)
3)
Fixing unit/scanner unit fan
Remove the right rear and rear covers.
Remove the upper cover unit.
Disconnect the connector.
➀
➀ Connector
Figure 3-7-5
FAM 4
FAM 1
FAM 3
4) Disconnect the connector.
FAM 5
FAM 2
➀
➀ Connector
Figure 3-7-4
Figure 3-7-6
3 - 37
CHAPTER 3
5) Remove the cable from the guide.
6) Unhook the claw, then remove the fan
duct.
3. Power supply fan
1) Remove the right rear and rear covers.
2) Disconnect the connector.
➃
➀
➁
➀
➂
➀ Cable
➂ Claw
➁ Cable guide
➃ Fan duct
➀ Connector
Figure 3-7-9
Figure 3-7-7
7) Remove the 2 screws, and then the fixing unit/scanner unit fan.
3) Remove the 2 screws, and then the
power supply fan.
➁
➁
➀
➀
➀ Screws
➁ Power supply fan
➀ Screws
➁ Fixing unit/scanner unit fan
Figure 3-7-10
Figure 3-7-8
3 - 38
CHAPTER 3
4.
1)
2)
3)
4)
Electrical unit fan
Remove the right rear and rear covers.
Remove the left rear cover.
Undo the connector.
Pinch the 2 claws holding the electrical
unit fan and pull out the fan.
5.
1)
2)
3)
Fixing unit fan
Remove the upper cover unit.
Undo the connector.
Remove the screw, and then the fan
grounding plate.
Disconnect the 4
claws to remove the fixing unit fan.
➄
➀
➁
➃
➀
➂
➁
➂
➀ Connector
➁ Claws
➂ Electrical unit fan
➀
➁
➂
➃
➄
Connector
Screw
Fan grounding plate
Claws
Fixing unit fan
Figure 3-7-11
Figure 3-7-12
3 - 39
CHAPTER 3
6. Multi-purpose tray pick-up unit fan
1) Remove the multi-purpose tray pick-up
unit following steps 1-6 on Page 3-12.
2) Disconnect the connector.
3) Remove the screw, claw, and then the
fan duct together the multi-purpose
tray pick-up unit fan.
4) Remove the multi-purpose tray pick-up
unit fan from the fan duct.
➁
➃
➀
➀
➁
➂
➃
➂
Connector
Screw
Claw
Multi-purpose tray pick-up unit fan
Figure 3-7-13
3 - 40
CHAPTER 3
VIII. PCBS
A. Locations
➃
➅
➀
➄
➂
➇
➁
➆
➀
➂
➄
➆
DC controller PCB
Multi-purpose tray PCB
High-voltage power supply PCB
Lower cassette paper-size sensing PCB
➁
➃
➅
➇
Pick-up PCB
Switch/sensor PCB
Upper cassette paper-size sensing PCB
Power supply
Figure 3-8-1
3 - 41
CHAPTER 3
B. Video Controller PCB Unit
1. Removal from the printer
1) Loosen the 2 screws then pull out the
video controller PCB unit.
2) Remove the 2 screws (M3) and the
guide.
3) Remove the 1 screw (M4) and the 4
screws (M3), then take out the video
controller PCB.
➃
➂
➁
➀
➄
➁
➀
➀ Screws
➁ Video controller PCB unit
➀
➁
➂
➃
➄
Figure 3-8-2
Screw (M3)
Guide
Screws (M4)
Screws (M3)
Video controller PCB
2. Disassembly/reassembly
a. Video Controller PCB
1) Remove the 2 screws.
Figure 3-8-4
➀
➁
➀ Video controller PCB ➁ Screws
Figure 3-8-3
3 - 42
Note:
If you removed ROM DIMM or RAM
DIMM when you repaced the video
controller PCB, reinstall it on the
new video controller PCB.
CHAPTER 3
b. Removal of RAM DIMM/ROM DIMM
(option)
1) Push down the socket lever to remove
the RAM DIMM or ROM DIMM. Be sure
not to touch the elements.
➂
C. DC Controller PCB
1) Remove the high-voltage power supply
unit following steps 1-3 on Page 3-47.
2) Disconnect the 19 connectors from the
DC controller PCB.
3) Remove the 2 screws (M3) and the 2
screws (M4).
4) Unhook the claw, and then remove the
DC controller PCB.
➃
➁
➃
➁
➂
➀
➀
➁
➀
➀
➁
➂
➃
Socket lever
RAM DIMM
ROM DIMM
Cutout
➀
➁
➂
➃
➄
➄
Connectors
Screws (M3)
Screws (M4)
Claw
DC controller PCB
Figure 3-8-6
Figure 3-8-5
Note:
When installing the RAM DIMM or
ROM DIMM onto the video controller PCB, note that the shape of
the RAM DIMM cutout differs from
that of the ROM DIMM cutout.
3 - 43
CHAPTER 3
D. Pick-up PCB
1) Remove the pick-up unit following steps
1-7 on Page 3-9.
2) Disconnect the 6 connectors.
3) Remove the screw, disconnect the 2
claws, and take out the pick-up PCB.
➀
➀
E. Multi-purpose Tray PCB
1) Remove the multi-purpose tray pick-up
unit following steps 1-6 on Page 3-12.
2) Remove the multi-purpose tray pick-up
unit fan following steps 2-3 on Page 340.
3) Remove the multi-purpose tray pick-up
clutch following steps 2-3 on Page 3-32.
4) Disconnect the 2 connectors
➃
➁
➀
➂
➀
➀ Connectors
➂ Claws
➁ Screw
➃ Pick-up PCB
➀ Connector
Figure 3-8-7
Figure 3-8-8
5) Remove the spring and then the lifting
plate position detection arm.
➀
➁
➀ Spring
➁ Lifting plate position detection arm
Figure 3-8-9
3 - 44
CHAPTER 3
6) Remove the screw
7) Unhook the claw, and then remove the
multi-purpose tray PCB.
➁
➂
F.
1)
2)
3)
4)
Switch/Sensor PCB
Remove the upper cover unit.
Remove the right rear and rear covers.
Remove the left rear cover.
Remove the connector, the 2 screws,
and then the fan duct.
5) Remove the 4 screws.
➀
➃
➀ Screw
➁ Claw
➂ Multi-purpose tray PCB
Figure 3-8-10
➂
➀
➀ Connector
➂ Fan duct
➁
➁ Screws
➃ Screws
Figure 3-8-11
6) Remove the 3 screws and the shield
cover.
➀
➁
➀ Screws
➁ Shield cover
Figure 3-8-12
3 - 45
CHAPTER 3
7) Remove the 5 screws and the shield
plate.
11) Disconnect the connector, remove the 2
screws, and pull out the board.
Disconnect the other connector and
remove the switch/sensor PCB.
➀
➀
➁
➂
➀
➀ Screws
➁
➁ Shield plate
➀ Connectors
➁ Screws
➂ Switch/sensor PCB
Figure 3-8-13
8) Remove the DC controller PCB following
steps 1-4 on Page 3-43.
9) Remove the 3 screws.
10) Remove the claw and take out the DC
controller mounting plate.
➁
➀
➂
➀ Screws
➁ Claw
➂ DC controller mounting plate
Figure 3-8-14
3 - 46
Figure 3-8-15
CHAPTER 3
G.
1)
2)
3)
High-voltage Power Supply Unit
Remove the right rear and rear covers.
Disconnect the 2 connectors.
Remove the screw (M4), the 2 screws
(M3), and then the high-voltage power
supply unit.
H. Cassette Paper-size Sensing PCB
1) Remove the cassettes.
2) Remove the power supply following
steps 1-7 on Page 3-48.
3) Disconnect the connector, remove the
screw, then take out the cassette papersize sensing cover.
➁
➃
➂
➀
➁
➂
➀
➀
➁
➂
➃
Connectors
Screws (M4)
Screws (M3)
High-voltage power supply unit
➀ Connector
➁ Screw
➂ Cassette paper-size sensing cover
Figure 3-8-16
Figure 3-8-17
4) Disconnect the connector and remove
the 3 screws from each PCB, then take
out the cassette-size sensing PCBs.
➀
➀
➁
➁
➂
➃
➀
➁
➂
➃
Connectors
Screws
Upper-cassette paper-size sensing PCB
Lower-cassette paper-size sensing PCB
Figure 3-8-18
3 - 47
CHAPTER 3
I. Power Supply
1) Remove the left rear and rear covers.
2) Disconnect the connector, remove the 2
screws, then take out the fan duct.
➀
5) Remove the 3 connectors.
➁
➀
➀ Connectors
➂
➀ Connector
➂ Fan duct
➁ Screws
Figure 3-8-19
Figure 3-8-21
6) Remove the 2 screws and the power
supply unit fan.
7) Remove the 2 screws and take off the
power supply unit.
3) Remove the connector.
4) Take out the 5 screws.
➁
➀
➀
➂
➀ Screws
➂ Screws
➁
➀ Connector
➁ Power supply fan
➃ Power supply
➁ Screws
Figure 3-8-22
Figure 3-8-20
3 - 48
➃
CHAPTER 4
TROUBLESHOOTING
I.
PREFACE ............................... 4-1
II.
IMAGE DEFECTS.................... 4-8
III. PAPER JAMS
TROUBLESHOOTING .............. 4-14
IV.
PAPER TRANSPORT
TROUBLESHOOTING .............. 4-18
V.
MALFUNCTION
TROUBLESHOOTING .............. 4-20
VI. MALFUNCTION STATUS
TROUBLESHOOTING .............. 4-21
VII. MEASUREMENT AND
ADJUSTMENT ........................ 4-28
VIII. MAINTENANCE AND
SERVICING............................. 4-35
IX. LOCATION OF CONNECTORS . 4-48
CHAPTER 4
I. PREFACE
A. Malfunction Diagnosis Flowchart
The malfunctions that occur in the printer fall into five main factors; “image defects,” “paper
jams,” “paper transport troubleshooting,” “malfunction troubleshooting,” and “malfunction status troubleshooting.”
If a malfunction occurred in the printer, the service technician is to find the factor according
to the malfunction diagnosis flowchart and to clear the problem following the action procedure
for each malfunction.
Make sure the following points at the execution of troubleshooting.
• Be sure that the connector has no poor contact when measuring the voltage at the specified
terminal of the connector.
• Before handling PCBs, be sure to touch a metal part of the printer to discharge static electricity, as it can cause damage to the PCBs.
• Do not attempt to disassemble the laser/scanner unit as it cannot be adjusted in the field.
4-1
CHAPTER 4
Initial check execution
Power ON
No
Displays "READY"?
Yes
Displays "operator call"
or "service call"?
Yes
No
Is test print executable?
(Note 1)
Refer to the item, "malfunction
status troubleshooting"
Yes
Make a test print
Yes
Occurs paper jam?
Refer to the item, "paper jams"
No
Delivers paper
normally?
No
Refer to the item, "paper
transport troubleshooting"
Yes
Occurs image
defect?
(Note 2)
Yes
Refer to the item, "image defects"
No
Displays "operator call"
or "service call"?
Yes
Refer to the item, "malfunction
status troubleshooting"
No
END
Figure 4-1-1
4-2
No
Refer to the item, "malfunction
troubleshooting"
CHAPTER 4
Notes : 1. Before executing a test print, make sure to select the same pick-up source and delivery source that were used when the malfunction occurred according to the information given by the user.
If the information is not available, make test prints with all feasible combination of
paper source and delivery source in the printer, and find out the factor.
2. The image defect occurred at the user side might not re-occur on its test print.
In this case, make a print from external device and infer the factor by the output
image. Then, find the factor according to the item, "image defects."
4-3
CHAPTER 4
B. Initial Check
Check the following items before making a diagnosis of malfunction. If any failure is found, the
service technician is to clear the problem and to give the instruction to the user.
1. Installation environment
Make sure that the requirements stated below meet when installing printer:
a. The power supply voltage is from -10% to +6% of the rated voltage.
b. The printer is securely installed on a level surface.
c. The room temperature is kept between 10°C and 32.5°C, and the relative humidity, between
20% and 80%.
d. Avoid sites generating ammonia gas, high temperature or high humidity (near water faucet,
kettle, humidifier), cold places, open flames and dusty areas.
e. Avoid sites exposed to direct sunlight. If unavoidable, advise the customer to hang curtains.
f. A well-ventilated place.
g. Make sure that the power plug is inserted to the printer and the outlet securely.
2. Paper checks
a. The recommended paper for this printer is used.
b. The paper is not damp.
3.
a.
b.
c.
Paper sets
The paper is set to the pick-up source within the specified volume.
The paper is set to the selected pick-up source correctly.
The cassette is installed in the printer correctly.
4. EP-72 cartridge sets
The cartridge is installed in the printer correctly.
5. Condensation
During winter, particularly when moving the printer into a warm room from a cold location such
as a warehouse, various problems can occur due to condensation in the printer.
Example)
a. Condensation in the optical system (six-faced mirror, reflecting mirror, lens, etc.) will result
in light output images.
b. As the photosensitive drum is cold, the resistance of the photoconductive layer is high. This
will lead to incorrect contrast.
If condensation appears, leave the printer ON for 10 to 20 minutes.
If a cartridge is opened soon after being moved from a cold room to a warm room, condensation may appear inside the cartridge and may cause various image defects.
Be sure to instruct the customer that it is necessary to leave the cartridge sealed for one to
two hours at room temperature to allow it to acclimatize.
4-4
CHAPTER 4
C. Test Print
The test print is divided into two types: engine test print and controller test print.
If a malfunction occurs in this printer, make a test print and assess the abnormality of the
printer.
1. Engine test print
Test print patterns of horizontal lines are printed in this test print. The test prints can be made
by using the printer driver tester which can make all four test patterns (vertical lines, horizontal lines, solid black and solid white), or the test print switch located on the right side of the
printer (see Figure 1-4-1).
One print of test pattern can be made by pressing the switch once when the power is turned
ON and the "READY" appears on the display. If the switch is held down, test prints are made
continuously.
Make sure that paper is loaded into the lower cassette before pressing the switch as this is
where the paper is picked up from.
Figure 4-1-2
4-5
CHAPTER 4
2. Controller test print
The following items can be printed by selecting and executing a TEST MENU:
•
SHOW PAGE COUNT
Displays the total number of pages printed. The total page number is only shown briefly on
the display but does not print. The page count prints in the TEST PRINT.
•
TEST PRINT
Make a Test Print. The Test Print lists the printing environment settings and also displays
the graphic and text printing capabilities.
•
PRINT PS FONTS
Available only after the Translator Module A-72 for Adobe PostScript Level 3 module has been
installed. Prints the PS Font List.
•
PRINT PCL FONTS
Prints the PCL Font List.
•
PRINT PS DEMO
Available only after the Translator Module A-72 for Adobe PostScript Level 3 module has been
installed. Prints the PS demonstration page.
•
PRINT PCL DEMO
Prints the PCL demonstration page.
•
CONTINUOUS TEST
Make continuous Test Prints.
•
STAPLE TEST
Available only when the staple stacker SS-72 is installed. Use "STAPLE TEST" when you
replaced the staple cartridge.
•
CLEANING PAGE
Use "CLEANING PAGE" to print cleaning patterns to clean the fixing unit when an image
defect occurred and its cause is suspected to be the fixing unit. Refer to "Maintenance and servicing by the customer" in Chapter 1 for details.
Follow these steps to make a Test Print:
1) Press the On Line key to set the printer off-line. The On line indicator should be OFF and
"PAUSED" appears in display.
2) Press the Menu key until you see "TEST MENU" in the top line.
3) Press the Item key until you see "TEST PRINT" in the bottom line.
4) Press the Enter key to start printing a Test Print.
5) After the pages are printed, press the On Line key to put the printer on-line.
Use the Test Print to verify the operation panel selections, system configurations (memory and
options), and print quality.
4-6
CHAPTER 4
Canon Inc., LBP-3260 Printer
Configuration Page
PCL MENU
COPIES = 1
PAGESIZE = A4
ORIENTATION = PORTRAIT
FORM = 64LINES
FNTSRC = INTERNAL
FONTNUM = 0
PT.SIZE = 12.00
PITCH = 10.00
SYMSET = ROMAN-8
FEEDER MENU
FEED = LOWER
7 BIN SORTER MODE = STACKING
OUTPUT = 7 BIN SORTER
FORM = 64LINES
TRAY SWITCH = ON
MANUAL = OFF
MPTSIZE = A4
CONFIG MENU
JAMRECOVERY = ON
AUTOCONT = OFF
DENSITY = 7
PWRSAV = 15 MIN
ECONOMY MODE = OFF
REFINE = ON
MEMCONFIG MENU
PCL SAVE = OFF
PARALLEL MENU
BIDIRECTION = ON
I/O TIMEOUT = 15
TEST MENU
SHOW PAGE COUNT
TEST PRINT
PRINT PCL FONTS
PRINT PCL DEMO
CONTINUOUS TEST
LANGUAGE MENU
LANG = ENGLISH
PAPER TYPE MENU
UPPER = PLAIN
LOWER = PLAIN
MPT = PLAIN
RESET MENU/PRINTER
RESET = PRINTER
RESET = MENU
INSTALLED OPTIONS
7 BIN SORTER
3-SPEED 7-BIN SORTER VER 5.7
TOTAL MEMORY = 8 MB
AUTOSENSED PAPER
UPPER = A4
LOWER = A4
PRINTER DETAILS
CODE LEVELS
CTL B1.0408/14/98
ENGINE OC
OPTC 05.10
PCL 1.4.10
PAGE COUNT = 1
Canon, the Canon logo and LBP are trademarks of Canon Inc.
PCL and PCL5 are trademarks of Hewlett-Packard Company.
Figure 4-1-3
4-7
CHAPTER 4
II. IMAGE DEFECTS
If the factor of the malfunction is identified as “image defects” by the malfunction diagnosis flowchart (Figure 4-1-1), find out the cause of the failure according to the table below and clear the
problem.
Table 4-2-1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
I-1
I-2
I-3
I-4
I-5
I-6
I-7
I-8
I-9
I-10
I-11
I-12
I-13
I-14
II-1.
Light:
Dark:
Completely Blank:
All Black:
Dots in Vertical Lines :
Dirt on Back of Paper:
Vertical Lines:
Black Horizontal Lines:
Dirt:
Blank Spots:
White Vertical Lines:
White Horizontal Lines:
Poor Fixing:
Image Distortion:
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
very light image
very dark image
no image
all black paper
white dots on the paper
dirt on the back of the paper
vertical lines on the paper
horizontal lines on the paper
dirt on surface of the paper
image with blank spots
white vertical lines on the paper
white horizontal lines on the paper
the image with poorly fixed toner
distorted image
Light
<Possible causes>
1. The image density is not adjusted correctly.
Action: Adjust the image density by operating the external device.
2. Open the upper cover and remove the EP-72 cartridge while a print is being made. Open the
drum protective shield of the EP-72 cartridge and check the toner image on the photosensitive drum. If the toner image has not been transferred to the paper properly, go to step 3.
If the toner image on the drum is faint, go to step 6.
Do not open the drum protective shield for more than 10 seconds.
3. The transfer charging roller contact of the high-voltage power supply is not making a good
connection with the contact of the transfer charging roller shaft.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
4. The transfer charging roller is deformed or has deteriorated.
Action: Replace the roller.
5. The high-voltage power supply PCB is defective.
Action: Replace the high-voltage power supply PCB.
6. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
4-8
CHAPTER 4
II-2.
Dark
<Possible causes>
1. The image density is not adjusted correctly.
Action: Adjust the image density by operating the external device.
2. The drum grounding contact of the high-voltage power supply is not making a good connection with the cartridge contact.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
3. The primary bias contact of the high-voltage power supply is not making a good connection
with the cartridge contact.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
4. The high-voltage power supply PCB is defective.
Action: Replace the high-voltage power supply PCB.
5. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
II-3.
Completely blank
<Possible causes>
1. The projection for opening and closing the laser shutter of the EP-72 cartridge is damaged.
Action: Replace the cartridge.
2. The laser shutter arm or laser shutter is malfunctioning or damaged.
Action: If the laser shutter arm or laser shutter does not move smoothly, or parts are damaged, replace them.
3. The developing bias contact of the high-voltage power supply is not making a good connection with the cartridge contact.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
4. The high-voltage power supply PCB is defective.
Action: Replace the high-voltage power supply PCB.
5. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
II-4.
All black
<Possible causes>
1. The primary bias contact of the high-voltage power supply is not making a good connection
with the cartridge contact.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
2. Defective primary charging roller
4-9
CHAPTER 4
Action: Replace the cartridge.
3. The high-voltage power supply PCB is defective.
Action: Replace the high-voltage power supply PCB.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
II-5.
Dots in vertical line
<Possible causes>
1. Static charge eliminator is dirty.
Action: Clean the eliminator with brush.
2. The static charge eliminator contact of the high-voltage power supply is not making a good
connection with the static charge eliminator contact.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
3. The transfer charging roller is deformed or has deteriorated.
Action: Replace the transfer charging roller.
4. The high-voltage power supply PCB is defective.
Action: Replace the high-voltage power supply PCB.
5. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
II-6.
Dirt on back of paper
<Possible causes>
1. Dirty paper
Action: Replace the paper with new one. Advise the customer on how to store paper.
2. Periodical stain (pick-up roller, transfer charging roller, lower fixing roller)
Action: Referring to Table 4-2-1 on page 4-11, identify the dirty roller(s) and clean the dirty
areas. If the dirt cannot be removed, replace the dirty roller(s).
3. The feed guide or fixing entry guide is dirty.
Action: Clean dirty parts.
II-7.
Vertical lines
<Possible causes>
1. Circumferential scars on the photosensitive drum
Action: Replace the cartridge
2. The upper fixing roller is scratched.
Action: Remove the cause of the damage and replace the roller.
4 - 10
CHAPTER 4
II-8.
Black horizontal lines
<Possible causes>
1. Horizontal scar(s) on photosensitive drum
Action: Replace the cartridge.
2. The upper fixing roller is dirty, deformed, or worn.
Action: Replace the upper fixing roller.
II-9.
Dirt
<Possible causes>
1. The print paper is dirty.
Action: Replace with new paper. Advise the customer how to store print paper.
2. Periodical stain (separation roller, transfer charging roller, upper fixing roller, EP-72 cartridge)
Action: Referring to Table 4-2-1 on page 4-11, identify the dirty roller(s) and clean the dirty
areas. If the dirt cannot be removed, replace the dirty roller(s).
3. Dirty delivery roller
Action: Clean the delivery roller.
II-10. Blank spots
<Possible causes>
1. Lack of toner
Action: Remove the cartridge from the printer. Rock the cartridge in the way described in
the chapter 1, and then install it back in the printer. If the problem persists, replace
the cartridge.
2. The transfer charging roller is dirty or deformed.
Action: Replace the transfer charging roller.
3. Defective photosensitive drum or developing cylinder
Action: Replace the cartridge.
II-11. White vertical lines
<Possible causes>
1. Lack of toner
Action: Remove the cartridge from the printer. Rock the cartridge in the way described in
the chapter 1, and then install it back in the printer. If the problem persists, replace
the cartridge.
2. Circumferential scars on the photosensitive drum
Action: Replace the cartridge.
3. Defective developing cylinder
Action: Replace the cartridge.
4. Foreign materials are on the laser outlet of the printer or the laser inlet of the cartridge.
4 - 11
CHAPTER 4
Action: Remove the foreign materials.
5. The upper fixing roller surface is damaged or dented.
Action: Replace the upper fixing roller.
6. The mirror in the laser/scanner unit is dirty.
Action: Replace the laser/scanner unit.
II-12. White horizontal lines
<Possible causes>
1. Horizontal scar(s) on the photosensitive drum
Action: Replace the cartridge.
2. Upper fixing roller is defective.
Action: Replace the upper fixing roller.
II-13. Poor fixing
<Possible causes>
1. The envelope position lever of the fixing unit is raised.
Action: Push down the lever.
2. The nip width of the fixing unit is not correct.
Action: Replace the fixing unit.
3. The fixing roller surface is damaged or dented.
Action: Replace the roller.
4. The lower fixing roller is dirty.
Action: Clean the roller. If it cannot be cleaned, replace the roller.
5. The thermistor has deteriorated.
Action: Replace the thermistor.
II-14. Image distortion
<Possible causes>
1. Connectors on the DC controller PCB are loose.
Action: Reconnect the J202, J206, and J207 connectors properly.
2. The laser/scanner unit connectors are loose.
Action: Reconnect J1001, J1 and J6.
3. The laser/scanner unit is faulty.
Action: Replace the laser/scanner unit.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
4 - 12
CHAPTER 4
Table 4-2-2
Periods of appearance of dirt, blank spots on images
Problem location
Diameter
(mm)
Period on
image (mm)
Transfer charging roller
17.15
About 54
Upper fixing roller
45
About 141
Lower fixing roller
32
About 100
Pick-up roller
24
About 75
Feed roller
24
About 75
Separation roller
24
About 75
Photosensitive drum
30
About 94
Developing cylinder
20
About 52
Primary charging roller
14
About 44
Dirt
Phenomenon
Dirt on back
Blank spot of paper
Poor fixing
4 - 13
CHAPTER 4
III. PAPER JAMS TROUBLESHOOTING
Paper passes through 4 major sections of the printer.
➀
➁
➂
➃
Figure 4-3-1
III-1:
III-2:
III-3:
III-4:
Multi-purpose tray pick-up block
Cassette pick-up block
Transfer and feed block
Fixing and delivery block
If the factor of the malfunction is identified as “paper jams” by the malfunction diagnosis flowchart (Figure 4-1-1), check the block in which the paper jam occurred, and find out the defective part.
4 - 14
CHAPTER 4
III-1.
Multi-purpose tray pick-up block
<Possible causes>
1. Curled paper
Action: Straighten the paper, and then instruct the user.
2. The multi-purpose tray pick-up roller is worn, deformed, or dirty.
Action: Clean the tray pick-up roller if it is dirty. Replace if worn or deformed.
3. Spring of the sensor is out of place or defective
Action: Set the spring in the right position. Replace it if defective.
4. Gears are damaged.
Action: Remove the multi-purpose tray pick-up unit and check the gears.
damaged gears.
Replace any
5. The multi-purpose tray pick-up clutch is defective.
Action: Remove the multi-purpose tray pick-up unit and disconnect multi-purpose tray
pick-up clutch connector J1303 from the multi-purpose tray PCB. Measure the
resistance between connector J1303-1 and J1303-2 on the cable side. If it is not
about 155Ω, replace the multi-purpose tray pick-up clutch.
6. The multi-purpose tray PCB is defective.
Action: Replace the multi-purpose tray PCB.
7. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
III-2.
Cassette pick-up block
<Possible causes>
1. The print paper is bent.
Action: Replace the paper.
2. The cassette pick-up roller, separation roller, or feed roller is worn or deformed.
Action: Replace if worn or deformed. Replace the separation roller and the feed roller
together.
3. Pick-up drive unit is damaged.
Action: Remove the pick-up unit and replace any damaged parts.
4. The pick-up motor is defective.
Action: Use the printer driver tester to rotate the paper pick-up motor. If it does not rotate,
replace it.
5. The cassette pick-up solenoid is defective.
Action: Remove the pick-up unit, and disconnect cassette pick-up solenoid connector
J1203 from the pick-up PCB. Measure the resistance between connector J1203-1
and J1203-2 on the cable side. If it is not about 190Ω, replace the cassette pickup solenoid.
6. The pick-up PCB is defective.
4 - 15
CHAPTER 4
Action: Replace the pick-up PCB.
7. The DC controller PCB is defective.
Action:
Replace the DC controller PCB.
III-3.
Transfer and feed block
<Possible causes>
1. The registration roller is worn, deformed, or dirty.
Action: Clean the registration roller if it is dirty. Replace if worn or deformed.
2. Transfer charging roller does not rotate smoothly.
Action: Replace the transfer sub roller. Replace any worn gear(s).
3. Registration paper sensor lever does not move smoothly, or is damaged.
Action: Adjust the lever so that it moves smoothly. Replace it if damaged.
4. Registration roller drive gears are damaged.
Action: Replace any damaged gears.
5. The registration clutch is defective.
Action: Disconnect registration clutch connector J17. Measure the resistance between connector J17-1 and J17-2 on the cable side. If it is not about 210Ω, replace the registration clutch.
6. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
III-4.
Fixing and delivery block
<Possible causes>
1. Paper longer than the paper length set by the user was loaded during manual feeding.
Action: Advise the user to replace it with the set paper size.
2. The fixing roller does not rotate smoothly.
Action: Check whether any gears are worn or fractured.
3. The fixing entry guide is dirty, damaged, or clogged with toner.
Action: Clean the guide.
4. The fixing separation guide is dirty, damaged, or clogged with toner.
Action: Clean the guide.
5. The fixing separation claw is worn or damaged.
Action: Replace the claw.
6. The upper or lower fixing roller is deformed or damaged.
Action: Replace deformed or damaged rollers.
7. The nip width of the lower fixing roller is not correct.
Action: Replace the fixing unit.
4 - 16
CHAPTER 4
8. The fixing unit delivery sensor lever does not move smoothly or is damaged.
Action: Adjust the lever so that it moves smoothly. If it is damaged, replace it.
9. The fixing unit delivery roller is worn.
Action: Replace the fixing unit delivery roller.
10. The fixing unit delivery roller does not rotate smoothly.
Action: Check the gears, and replace any worn or fractured gear(s).
11. The face-down delivery roller does not rotate smoothly.
Action: Check the gears, and replace any worn or fractured gear(s).
12. Defective fixing unit delivery sensor.
Action: Replace the sensor.
4 - 17
CHAPTER 4
IV. PAPER TRANSPORT TROUBLESHOOTING
If the factor of the malfunction is identified as “paper transport troubleshooting” by the malfunction diagnosis flowchart (Figure 4-1-1), execute the followings and mend the defect.
IV-1.
Multiple Paper Feed
<Possible causes>
1. If this problem occurs with the multi-purpose tray, perform step 4 and subsequent steps.
2. The separation roller is worn or deformed.
Action: Replace the separation roller together with the feed roller.
3. The spring is defective.
Action: Replace the spring that pulls the separation roller.
4. The separation pad surface is worn.
Action: Replace the separation pad together with the multi-purpose tray pick-up roller.
5. The spring is defective.
Action: Replace the spring of the separation pad.
IV-2.
Wrinkles/folded leading edge
<Possible causes>
1. Curled paper
Action: A devise the user to straighten the paper.
2. After executing a test print, open the top cover before the paper enters the fixing unit. If the
paper is wrinkled at this point, go to step 6).
3. The fixing entry guide is dirty.
Action: Clean the guide.
4. The lower fixing roller is dirty.
Action: Clean the lower fixing roller.
5. The fixing roller is deformed or worn.
Action: Replace the worn or deformed roller.
6. Paper dust or dirt is accumulated on the feed roller, registration roller, or feed guide.
Action: Clean the dirty areas.
7. Scarred or dirty feed guide
Action: Check the paper path. Replace any scarred or deformed guide(s).
IV-3.
Skew
<Possible causes>
1. Paper dust or dirt is adhering to the registration rollers or the feed guide.
Action: Remove the paper dust or dirt.
4 - 18
CHAPTER 4
2. The spring of the registration roller unit is out of place.
Action: If the spring is out of place, set it in the right position or replace it with new one.
4 - 19
CHAPTER 4
V. MALFUNCTION TROUBLESHOOTING
If the factor of the malfunction is identified as “malfunction troubleshooting” by the malfunction
diagnosis flowchart (Figure 4-1-1), execute the followings and mend the malfunction.
V-1.
No AC Power Input
<Possible causes>
1. The correct voltage is not present at the outlet.
Action: Inform the customer that the correct line voltage is not available at the outlet.
2. The power cord is not firmly plugged into the printer, the option (with power receptacle), and
the outlet.
Action: Push the power plugs in firmly.
3. The circuit breaker is OFF.
Action: Remove the power supply. Press the circuit breaker button to set the circuit breaker ON.
Turn the circuit breaker ON 30 seconds after it is activated (turned OFF).
Before plugging the power cord into the outlet, turn the power switch ON and
check the AC line circuit short and the circuit breaker states (continuity and
contact resistance) using a multimeter.
4. The power supply is defective.
Action: Replace the power supply.
V-2.
No DC Power Input
<Possible causes>
1. The AC power is not present.
Action: Make a check using the steps of E-1 “No AC Power Input”.
2. The overcurrent/overvoltage detection circuit is active.
Action: If the problem is not rectified when the power switch is turned OFF and ON again,
find the cause of activation of the overcurrent/overvoltage detection circuit of the
power supply. Turn the power switch OFF for 2 minutes then turn it ON again.
3. The fuse has blown.
Action:
Remove the power supply and replace the fuse.
4. The power supply is defective.
Action: Turn the power switch OFF and disconnect the connector J204 from the DC controller PCB. Plug the power cable and turn the power switch ON. Measure the DC
power supply output of the connector J204. Do not short the connector. If the correct value is not output, replace the power supply.
5. Wiring, DC load, DC controller PCB
Action: Turn the power switch OFF. Check the wiring from the DC controller PCB and the
DC load. If they are normal, replace the DC controller PCB.
4 - 20
CHAPTER 4
VI. MALFUNCTION STATUS TROUBLESHOOTING
If the factor of the malfunction is identified as “malfunction status troubleshooting” by the malfunction diagnosis flowchart (Figure 4-1-1), execute the followings and mend the malfunction.
VI-1.
"10.1 ERROR FUSER CALL FOR SERVICE"
Fixing unit failure (abnormal low temperature)
"10.2 ERROR FUSER CALL FOR SERVICE"
Fixing unit failure (abnormal Warm-up)
<Possible causes>
1. The rated voltage of the fixing unit installed in the printer differs from the line voltage.
Action: Replace the fixing unit.
2. The thermistor is dirty.
Action: If the thermistor contact area of the upper fixing roller is dirty, clean it.
3. The thermistor is not installed correctly.
Action: If the thermistor is not evenly contacting the upper fixing roller, re-install the thermistor correctly.
4. The thermistor wire is broken.
Action: Turn the power OFF and remove the fixing unit. Measure the resistance between
the fixing unit connector J50B-5 (FSRTH) and J50B-4 (GNDTH). If the resistance
is not between about 190kΩ and 290kΩ (room temperature of 25°C), check the
wiring from connector J222 on the DC controller PCB to the thermistor. If it is normal, replace the thermistor.
5. The main heater wire is broken.
Action: Remove the fixing unit. If there is no continuity between the fixing unit connector
J50-3 (FSRN1: the upper right terminal of the left connector) and J51-5 (FSRN2: the
upper right terminal of the right connector), replace the main heater.
6. The sub heater wire is broken.
Action: Remove the fixing unit. If there is no continuity between the fixing unit connector
J50-4 (FSRL1: the lower right terminal of the left connector) and J51-6 (FSRL2: the
lower right terminal of the right connector), replace the sub heater.
7. The thermoswitch is open.
Action: Remove the fixing unit and wiring cover. If there is no continuity between thermoswitch terminals, replace the thermoswitch.
8. The fixing unit drive circuit is defective.
Action: Replace the power supply unit.
9. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
4 - 21
CHAPTER 4
VI-2.
"10.3 ERROR FUSER CALL FOR SERVICE"
Fixing unit failure (abnormal high temperature)
<Possible causes>
1. The thermistor has shorted.
Action: Turn the power OFF and remove the fixing unit. Measure the resistance between
the fixing unit connector J50B-5 (FSRTH) and J50B-4 (GNDTH). The connector
J50B is the upper terminal of the left connector. If the resistance is 1kΩ or less,
check the wiring from connector J222 on the DC controller PCB to the thermistor.
If it is normal, replace the thermistor.
2. The fixing unit drive circuit in the power supply is defective.
Action: Replace the power supply.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-3.
"10.4 ERROR FUSER CALL FOR SERVICE"
Fixing unit failure (wrong type)
<Possible causes>
1. The rated voltage of the fixing unit does not match the line voltage.
Action: Replace the fixing unit.
2. The type detection circuit in the power supply is defective.
Action: Replace the power supply.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-4.
"11.1 ERROR SCANNER CALL FOR SERVICE" Scanner motor malfunction
"11.2 ERROR SCANNER CALL FOR SERVICE" Scanner motor malfunction
<Possible causes>
1. The scanner motor drive line connectors are loose.
Action: Reconnect connector J1 on the scanner driver PCB, intermediate connector J18,
and connector J207 on the DC controller PCB.
2. The scanner motor driver is defective.
Action: Use the printer driver tester to rotate the scanner motor.
replace the laser/scanner unit.
If it does not rotate,
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-5.
"11.3 ERROR SCANNER CALL FOR SERVICE" BD malfunction
"11.4 ERROR LASER CALL FOR SERVICE" Laser malfunction
<Possible causes>
1. The BD signal line connector is loose.
Action: Reconnect connector J6 on the BD PCB and J206 on the DC controller PCB.
4 - 22
CHAPTER 4
2. The laser drive signal line connectors are loose.
Action: Reconnect connector J1001 on the laser driver PCB, and connector J202 on the DC
controller PCB.
3. The laser/scanner unit is defective.
Action: Replace the laser/scanner unit.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-6.
"12.1 ERROR MOTOR CALL FOR SERVICE" Faulty main motor
"12.2 ERROR MOTOR CALL FOR SERVICE" Faulty main motor
<Possible causes>
1. The main motor drive signal line connectors are loose.
Action: Reconnect connector J12 of the main motor and connector J218 on the DC controller PCB.
2. The door switch on the switch/sensor PCB is defective.
Action: Remove connectors J205 and J221 on the DC controller PCB. If J205-3 (+24V) and
J221-1 (+24VB) on the cable side do not conduct when the door switch (SW1401) is
ON, replace the switch/sensor PCB.
3. The main motor is defective.
Action: Use the printer driver tester to rotate the main motor. If it does not rotate, replace
it.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-7.
"13.1 ERROR FAM 1 CALL FOR SERVICE" Electrical unit fan (FM3) failure
<Possible causes>
1. The FM3 drive signal line connector is loose.
Action: Reconnect connector J210 on the DC controller PCB and connectors J12 and J13.
2. The electrical unit fan is defective.
Action: Disconnect connector J210 on the DC controller PCB. Turn the power switch ON
and measure the voltage between connector J210-1 (FAN3D) and J210-3 (GND) on
the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the
electrical unit fan.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-8.
"13.2 ERROR FAM 2 CALL FOR SERVICE" Power supply fan (FM2) failure
<Possible causes>
1. The FM2 drive signal line connector is loose.
Action: Reconnect connector J216 on the DC controller PCB.
2. The power supply fan is defective.
4 - 23
CHAPTER 4
Action: Disconnect connector J216 on the DC controller PCB. Turn the power switch ON
and measure the voltage between connector J216-1 (FAN2D) and J216-3 (GND) on
the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the
power supply fan.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-9.
"13.3 ERROR FAM 3 CALL FOR SERVICE" Fixing unit/scanner fan (FM1) failure
<Possible causes>
1. The FM1 drive signal line connector is loose.
Action: Reconnect connector J208 on the DC controller PCB.
2. The fixing unit/scanner fan is defective.
Action: Disconnect connector J208 on the DC controller PCB. Turn the power switch ON
and measure the voltage between connector J208-1 (FAN1D) and J208-3 (GND) on
the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the
fixing unit/scanner fan.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-10. "13.4 ERROR FAM 4 CALL FOR SERVICE" Fixing unit fan (FM4) failure
<Possible causes>
1. The FM4 drive signal line connector is loose.
Action: Reconnect connector J225 on the DC controller PCB and connectors J25 and J26.
2. The fixing unit fan is defective.
Action: Disconnect connector J225 on the DC controller PCB. Turn the power switch ON
and measure the voltage between connector J225-1 (FAN4D) and J225-3 (GND) on
the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the
fixing unit fan.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-11. "13.5 ERROR FAM 5 CALL FOR SERVICE"
Multi-purpose tray pick-up unit fan (FM5) failure
<Possible causes>
1. The FM5 drive signal line connector is loose.
Action: Reconnect connector J229 on the DC controller PCB and connectors J34 and J35.
2. The multi-purpose tray pick-up unit fan is defective.
Action: Disconnect connector J229 on the DC controller PCB. Turn the power switch ON
and measure the voltage between connector J229-1 (FAN5D) and J229-3 (GND) on
the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the
multi-purpose tray pick-up unit fan.
3. The DC controller PCB is defective.
4 - 24
CHAPTER 4
Action: Replace the DC controller PCB.
VI-12. "14.1 ERROR AUX TRAY CALL FOR SERVICE" Lifting plate failure
<Possible causes>
1. Lifting plate drive unit parts are damaged.
Action: Replace any damaged parts.
2. The lifting plate position sensor is defective.
Action: Check the sensor state using the printer driver tester. If it is defective, replace the
multi-purpose tray PCB.
3. The lifting plate solenoid is defective.
Action: Disconnect lifting plate solenoid connector J1302. Measure the resistance between
connector J1302-1 and J1302-2 on the cable side. If it is not about 160Ω, replace
the lifting plate solenoid.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-13. "TONER CARTRIDGE MISSING" message appears when it is installed
<Possible causes>
1. The developing bias contact of the high-voltage power supply is not making a good connection with the cartridge contact.
Action: If the contacts are dirty, clean them. If the problem continues after cleaning, or
parts are deformed or damaged, replace them.
2. Defective cartridge
Action: Replace the cartridge.
3. The high-voltage power supply PCB is defective.
Action: Replace the high-voltage power supply PCB.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-14. "LOAD <MEDIA> <SIZE> IN MPT" message appears when the specified sized paper
is in the multi-purpose tray
<Possible causes>
1. Damaged paper detection lever
Action: Replace the defective lever.
2. Defective multi-purpose tray paper sensor
Action: Replace the multi-purpose tray PCB.
3. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
4 - 25
CHAPTER 4
VI-15. Displays "LOAD<MEDIA><SIZE> IN UPPER" or "LOAD<MEDIA><SIZE>IN LOWER"
when the specified cassette is loaded with paper.
<Possible causes>
1. Pull out the upper and lower cassettes, and install the specified cassette in the printer. If
the lifter does not lift, perform step 5 and subsequent steps.
2. Damaged paper detection lever
Action: Replace the defective lever.
3. Defective upper cassette paper-out sensor/lower cassette paper-out sensor
Action: Replace the pick-up PCB.
4. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
5. Pick-up drive unit is damaged.
Action: Remove the pick-up unit and replace any damaged parts.
6. The cassette pick-up solenoid is defective.
Action: Remove the pick-up unit, and disconnect cassette pick-up solenoid connector
J1203 from the pick-up PCB. Measure the resistance between connectors J12031 and J1203-2 on the cable side. If it is not about 160Ω, replace the cassette pickup solenoid.
7. The pick-up PCB is defective.
Action: Replace the pick-up PCB.
8. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
VI-16. "PAPER JAM" message appears when the paper jam has not occurred, and the
printer cannot be in READY mode.
<Possible causes>
1. Registration paper sensor lever does not move smoothly, or is damaged.
Action: Adjust the lever so that it moves smoothly. Replace it if damaged.
2. Pick-up unit sensor lever does not move smoothly, or is damaged.
Action: Adjust the lever so that it moves smoothly. Replace it if damaged.
3. Fixing unit delivery sensor lever does not move smoothly, or is damaged.
Action: Adjust the lever so that it moves smoothly. Replace it if damaged.
4. Face-down tray delivery sensor lever does not move smoothly, or is damaged.
Action: Adjust the lever so that it moves smoothly. Replace it if damaged.
5. Sensor failure
Action: Using the printer driver tester, check the condition of the sensors. If the LED of the
tester does not light up when the sensor lever is shifted, replace the sensor.
4 - 26
CHAPTER 4
VI-17. "PRINTER OPEN" message appears when the cover is closed.
<Possible causes>
1. The projection for the delivery cover is damaged.
Action: Replace the delivery cover.
2. The projection for the upper cover is damaged.
Action: Replace the upper cover.
3. The projection for the pick-up unit door is damaged.
Action: Replace the pick-up unit door.
4. The pick-up unit door sensor is defective.
Action: Using the printer driver tester, check the condition of the sensor. If the LED of the
tester does not light up when the pick-up unit door is opened, replace the sensor.
5. Interlock arm does not move smoothly, or is damaged.
Action: Adjust the arm so that it moves smoothly. Replace it if damaged.
6. Connector is loose.
Action: Reconnect connector J1401 on the switch/sensor PCB and connectors J205 and
J221 on the DC controller PCB.
7. The door switch is defective.
Action: Replace the switch/sensor PCB.
8. The DC controller PCB is defective.
Action: Replace the DC controller PCB.
4 - 27
CHAPTER 4
VII. MEASUREMENT AND ADJUSTMENT
A. Mechanical Adjustment
1. Checking the nip width of the lower fixing roller
The fixing unit is not designed to allow adjustment of the pressure (nip width); however, the
incorrect nip width can cause fixing problems.
Follow the procedures below to check the nip width:
1) Make an all-black print using an EP-72 cartridge, and take the print to the customer’s site.
(Use the printer driver tester to output an all-black print.)
2) Place the all-black print in the lower cassette of the printer, with the printed side facing
down.
3) Press the test print switch.
4) Turn OFF the printer when the leading edge of the print emerges at the face-down tray. Turn
ON the printer 10 seconds later, and operate the printer to deliver the print.
5) Measure the width of the glossy band across the paper and check that it meets the requirements as shown in Figure 4-7-1.
• Center (a) : 6.5 ± 1.0mm
• Left/right side (b) : 6.9 ± 1.0mm
• Difference between right side and left side (|b-c|) : 1.0mm or less
• Difference between right/left sides and center (b-a, c-a) : 1.5mm or less
b
Feed-out direction
Center of A3sized paper
a
b
Figure 4-7-1
2. Side registration adjustment of the cassette
When the side registration of the cassette is not aligned, this adjustment needs to be made.
The side registration adjustment levers (see Figure 4-7-2) in the upper and lower cassettes
are adjusted in the factory. Therefore, there is no need to make any adjustments when installing
the printer. However, when either upper or lower cassette is replaced in the field, re-adjustment
of the left margin is necessary. This procedure is outlined below.
1) Load 20 to 30 sheets of paper into the cassette. Then, using the printer driver tester, print
several pages of all-black or horizontal line test prints.
2) Measure the distance (a) between the left edge of the page to the edge of the printed pattern
(see Figure 4-7-2). Measure several test prints to find the average distance.
3) Move the side registration adjustment lever based on Figure 4-7-2 so that the distance measured in step 2) become 3.0mm. (one notch alters length (a) by 0.5mm.)
For example, if the average length of step 2) is 2.0mm, by moving the lever 2 steps clockwise
the necessary adjustment of 1.0mm can be made.
4) Make several more test prints. Make sure that the left margin is 3.0mm by repeating step
2) above.
If the margin needs further adjustment, repeat steps 1) to 3) again.
4 - 28
CHAPTER 4
The value of "a" drops by 0.5mm
for each notch moved.
Leading edge of paper
a
The value of "a" rises by 0.5mm
for each notch moved.
Figure 4-7-2
B. Electrical Adjustment
• No electrical adjustment for this printer.
4 - 29
CHAPTER 4
C. Variable Resistors, LEDs, Test Pins, Jumpers and Switches on PCBs
Only the variable resistors, LEDs, test pins, jumpers, and switches required for after-sales service in the field are listed below.
All other variable resistors, test pins, etc. are for the factory use only. The adjustment and
check using these test pins, etc. require special tools, measuring instruments and high precision. Do not touch them in the field.
Notes: 1. Some LEDs receive leakage current during normal operation, thus glow dimly even
when they should be OFF.
2. Variable resistor which may be adjusted in the field are marked .........
Variable resistor which may not be adjusted in the field are marked ...
1. DC controller PCB
SW201
J203
J208
J225
J205
J207
J219
J220
J210
J215
J213
J214
J209
J223
J218
J216
J221
J229
J217
Figure 4-7-3
J204
J201
J206
J222
J212
4 - 30
J202
LED201
CHAPTER 4
Table 4-7-1
Function
SW No.
SW201
Test print switch
LED201 Sensor check
Note:
(Note)
Sensor check is available only when the service mode is specified by the printer driver
tester. (Refer to the operating manual of the printer driver tester for details.)
2. Switch/sensor PCB
J1402
2
1
1
3
14
SW1401
4
2
J1401
1
Figure 4-7-4
Table 4-7-2
SW No.
Function
SW1401 Door switch
4 - 31
CHAPTER 4
3. Cassette paper size detection PCB
J1601
1
SW1604 SW1603 SW1602 SW1601
5
Figure 4-7-5
Table 4-7-3
SW No.
Function
SW1601
Cassette paper-size sensing
switch
SW1603 (See page 2-47.)
SW1604
SW1602
4 - 32
CHAPTER 4
4. High-voltage power supply PCB
VR702
B12
B1
VR701
TB706
A12
J701
A1
TB705
TB703
TB702
TB704
1
TB701
6
5
2
T704
7
Figure 4-7-6
Table 4-7-4
VR No.
VR701
VR702
Function
For factory use
4 - 33
CHAPTER 4
This page intentionally left blank
4 - 34
CHAPTER 4
VIII. MAINTENANCE AND SERVICING
A. Periodic Replacement Parts
• No parts require periodic replacement in this printer.
Note:
Periodic replacement parts are the parts that must be replaced at regular intervals, even
if they are functioning properly and show no signs of wear. (Failure of these parts can
seriously affect the performance.) These parts should be replaced during a regular
service visit closest to the end of the parts expected life.
B. Expected Service Life of Consumable Parts
Shown below are the average life expectancies (number of prints) of parts that may need to be
replace due to deterioration or damage at least once prior to the elapse of the warranty period
of the printer. These parts should be replace when faulty.
Table 4-8-1
As of December, 1998
No.
1
Part name
Multi-purpose tray pick-
Part No.
Qt’y
RB1-9526-000
1
Expected life
200,000 prints
Remarks
Replace the multi-purpose
tray pick-up roller and
up roller
2
Separation pad
RF5-2703-000
1
200,000 prints
3
Fixing unit
RG5-4319-000
1
350,000 pages (Note 2) 220-240V
4
Transfer charging roller
RF9-1394-000
1
350,000 pages (Note 2)
5
Feed roller and separation RF5-1834-000
4
350,000 prints
separation pad together.
For both upper and lower rollers.
Replace the feed rollers and
roller
separation rollers together.
6
Power supply fan
RH7-1266-000
1
25,000 hours
7
Electrical unit fan
RH7-1271-000
1
25,000 hours
8
Fixing unit fan
RH7-1289-000
1
25,000 hours
9
Fixing unit/scanner fan
RH7-1396-000
1
25,000 hours
Multi-purpose tray fan
RH7-1397-000
1
25,000 hours
10
Notes: 1. The values above are only estimates based on part data, and are subject to change.
2. 2 pages are counted as 1 print in case of duplexing. Expected life of the fixing unit
is 350,000 pages when it is used only in the normal mode.
C. Periodic Service
• The printer has no parts that require periodic servicing.
4 - 35
CHAPTER 4
D. Cleaning during a Service Visit
Following the procedures below, clean the printer during service visit.
1. Transfer charging roller
As a general rule, the transfer charging roller is not to be touched or cleaned. If it is unavoidable, clean the roller with dry lint free paper (which produces little paper dust). Do not use water
or solvent. Make sure not to contaminate the roller with solvent or oil.
2. Multi-purpose tray pick-up roller, cassette pick-up roller, separation roller, and feed
roller
Clean with lint-free paper, either dry or moistened with ethyl/isopropyl alcohol.
3. Separation pad
Clean with lint-free paper.
4. Registration roller unit
Clean with lint-free paper. If badly contaminated, use it with ethyl/isopropyl alcohol for rubber
parts and MEK(methyl ethyl ketone) for other parts. Avoid skew or paper jams caused by
removal of the springs.
5. Transfer guide unit
Clean with soft, dry flannel cloth.
6. Static charge eliminator
Clean with brush.
7. Feed guide unit
Clean with lint-free paper.
8. Fixing unit
• Fixing entry guide
Clean with lint-free paper moistened with MEK.
• Fixing separation guide
Clean lightly with lint-free paper moistened with MEK, only to remove the toner deposit.
• Fixing separation claw
Clean lightly with lint-free paper moistened with MEK, only to remove the toner deposit. Replace
if badly worn.
4 - 36
CHAPTER 4
➀ ➁
➂
➃
➄
➅
➆ ➇
12
➈
11
➉
Figure 4-8-1
1:
2:
3:
4:
5:
6:
Fixing separation guide
Fixing separation claw
Fixing entry guide
Feed guide
Transfer charging roller
Transfer guide
7:
8:
9:
10:
11:
12:
Registration roller unit
Separation pad
Multi-purpose tray pick-up roller
Feed roller
Separation roller
Pick-up roller
4 - 37
CHAPTER 4
E. Standard Tools
The standard tools required for servicing the printer are listed below.
Table 4-8-2
Tool name
No.
Tool No.
Remarks
1
Tool case
TKN-0001
2
Jumper wire
TKN-0069
With clips
3
Thickness gauge
CK-0057
0.02 mm to 0.3 mm
4
Compression spring scale
CK-0058
For checking cassette spring
strength (0–600 g)
5
Phillips screwdriver
CK-0101
M4, M5 length: 363mm
6
Phillips screwdriver
CK-0104
M3, M4 length: 155mm
7
Phillips screwdriver
CK-0105
M4, M5 length: 191mm
8
Phillips screwdriver
CK-0106
M4, M5 length: 85mm
9
Flat-blade screwdriver
CK-0111
10
Precision flat-blade screwdriver set
CK-0114
Set of 6
11
Allen wrench set
CK-0151
Set of 5
12
File, fine
CK-0161
13
Allen (hex) screwdriver
CK-0170
14
Diagonal cutting pliers
CK-0201
15
Needle-nose pliers
CK-0202
16
Pliers
CK-0203
17
Retaining ring pliers
CK-0205
18
Crimper
CK-0218
19
Tweezers
CK-0302
20
Ruler
CK-0303
150 mm (for measuring)
21
Soldering iron
CK-0309
100 V, 30 W
22
Mallet, plastic head
CK-0314
23
Brush
CK-0315
24
Penlight
CK-0327
25
Plastic bottle
CK-0328
100cc
26
Solder
CK-0329
ø1.5 (mm) × 1 (m)
27
Desoldering wick
CK-0330
1.5 mm
28
Lint-free paper
CK-0336
500 SH/PKG
29
Soldering iron
CK-0348
240 V, 30 W
30
Oiler
CK-0349
30cc
31
Plastic jar
CK-0351
30cc
32
Digital multimeter
FY9-2032
4 - 38
M4 length: 107mm
For shaft rings
CHAPTER 4
F. Special Tools
In addition to the standard tools, the following special tools are required for servicing the printer.
Table 4-8-3
No.
1
Tool name
Printer driver
tester
Tool No.
Shape
RY9-0104
TER
bit 16
bit 8
1
bit 7
1
bit 6
1
0
bit 15
bit 14
B
DRIV
ER
bit 13
bit 12
bit 11
bit 10
bit 9
DAT
A
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
DAT
A SET
bit 5
1
0
bit 4
1
0
bit 2
bit 1
DC2
4V
Application/remarks
Used for checking printer
operations.
0
bit 3
1
0
0
bit 2
1
bit 1
1
ENT
ER
0
0
TES
PRINTT
ON
D ISPL
AY
MODE
5
OFF
RY9-0
6
SEL
ECT
7
3
SE T
104
Note:
RANK
PRIN
8
UP
2
1
11
CAN
MAD ON
E IN INC
JAP .
AN
9
10
Ranks
A: Tools used for part replacement or adjustment on site.
B: Tools used on site or in regions.
These tools include tools used for failure analysis, and tools which are difficult to
carry around.
C: Tools used in the workshop.
These tools include the tools used for PCB and unit repairs.
4 - 39
CHAPTER 4
G. Special Tools (printer driver tester) Explanation
PRIN
TER
bit 16
bit 8
1
bit 7
1
bit 6
1
0
bit 15
bit 14
DATA
bit
1
5
bit 13
ER
bit 12
bit 11
bit 10
bit 9
DAT
A
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
DC24
SET
bit 4
1
0
DRIV
0
V
bit 3
1
0
bit 2
1
0
bit 1
1
ENT
ER
0
0
TE
PRINST
T
ON
0
DISP
LAY
MOD
5
OFF
RY9
-0
104
E SE
6
3
SET
UP
1
11
C
MAD ANON
E IN INC
JAPA .
N
LEC
7
T
8
2
9
10
Figure 4-8-2
1. Outline
The tester runs the printer independently to test operation of printer and options (duplexing unit
and envelope feeder). It has three uses which are outlined below;
a. Commands the printer to print out solid black, horizontal lines, vertical lines and solid blank
images. It can also select the pick-up and delivery trays and simplex and duplex print.
b. Monitors the status of the sensors, and forcibly operates the various solenoids and motors.
c. In the event of a printer failure, the error information sent from the printer to the video controller (external device) can be displayed on the tester LED.
Note:
4 - 40
This manual covers the basic operation of the printer driver tester. For more defailed
explanation please refer to the operation manual attached to the tester.
CHAPTER 4
2. Operation Panel
PRINTER DRIVER
DATA
bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10
bit 9
bit 8
DC24V
bit 7
bit 6
bit 5
DATA SET
bit 8
1
bit 7
1
bit 6
1
bit 5
1
bit 4
1
bit 4
bit 3
ENTER
bit 3
1
bit 2
1
bit 1
1
bit 2
bit 1
TEST
PRINT
ON
MODE SELECT
DISPLAY
5
6
7
4
8
3
9
2
0
0
0
0
0
0
0
0
OFF
RY9-0104
SET UP
10
1
11
CANON INC.
MADE IN JAPAN
Figure 4-8-3
DATA LED
Monitors the status of the various loads and sensors sent from the printer with the 16 LEDs.
+24VA LED
Lights up when +24VA is being supplied to the tester.
TEST PRINT switch
When set to "ON", test patterns set by the DATA SET switches are printed.
MODE SELECT switch
To select the various modes. See table 4-8-4.
DISPLAY/SET UP switch
Switches between DISPLAY and SET UP.
DISPLAY: Mode to display the status of the various sensors and loads sent from the printer with
the DATA LED.
SET UP: Mode to set data with the DATA SET switches.
DATA SET switch
Sets the various data sent to the printer. See in table 4-8-4.
ENTER switch
Inputs data set by the DATA SET switches.
4 - 41
CHAPTER 4
Table 4-8-4
DISPLAY
/SET UP
DISPLAY (displays the status of the sensors SET UP (sets up various data sent to the
and loads sent from the printer)
Mode
1
Operator call/ service call
2
Service call/ misprint details/ warning/ fan
printer)
Print density select
malfunction details 2 (72X)
3
Pick-up unit configuration/ select pick-up
Ready inhibit/ forced laser emission (WX)/
unit/ pick-up unit paper-out
sleep setting
4
Sensor status (WX)/ Sensor status 1 (72X)
5
Select paper size/ select print density
Multi-purpose tray paper size select
6
7
Upper and lower cassette paper size detection
data/ Sensor status 2 (72X)
8
9
Cause of paper jam/ fan malfunction details
Test print paper pick-up/ delivery slot
(WX)/ fan malfunction details 1 (72X)
allocation/ pattern setting
Paper transport system electrical parts status/ Paper transport system electrical parts drive 1
Sensor status 3 (72X)
10
Paper transport system electrical parts drive 2
Motor status
Paper transport system electrical parts drive 3
11
3. Connector Signal Chart
Table 4-8-5
Connector 1
4 - 42
Pin No.
Signal
name
J1-1
+24VA
J1-2
IN
J1-3
OUT
Serial line (output)
J1-4
GND
GND
Function
+24VA
Serial line (input)
CHAPTER 4
4.
a.
1)
2)
3)
4)
Operation Method
Preparation
Switch OFF the printer.
Connect the tester connector 1 to the envelope feeder connector (J24) in the printer.
Turn ON the printer.
When the printer is in standby mode, start performing checks with the tester.
Clip
PRIN
TER
bit 16
bit 8
1
bit 7
1
bit 6
1
0
bit 15
bit 14
DATA
bit 5
1
0
bit 13
DRIV
ER
bit 12
bit 11
bit 10
Connector 2
bit 9
DATA
bit 8
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
DC24
SET
bit 4
1
0
V
bit 3
1
0
bit 2
1
0
bit 1
1
ENT
ER
0
0
TE
PRINST
T
ON
0
DISP
LAY
MOD
5
OFF
RY9
-0
104
E SE
6
3
SET
UP
1
11
C
MAD ANON
E IN INC
JAP .
AN
LEC
7
T
8
2
9
10
Connector 1
Figure 4-8-4
Note:
When operating the printer driver tester, electrostatic energy can cause operation failures. Therefore, when connecting the tester be sure to touch a metal part of the printer with your hand to discharge any electrostatic energy.
4 - 43
CHAPTER 4
b. Confirming Printer Status
Select DISPLAY with the DISPLAY/SET UP switch. Check can be made with the LED display
(see table 4-8-7).
For example, when checking the contents of operator call/ service call, follow the directions
below.
1) After the printer has entered standby mode, set the DISPLAY/SET UP switch to "DISPLAY".
2) Set the MODE SELECT to "1".
3) Look up the corresponding chart for the bit that is lit up by a DATA LED.
For example, when a fixing unit failure occurs, the LED of bit 16 will light up.
PRINTER DRIVER
DATA
bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10
bit 9
bit 8
DC24V
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
➀
➂
DATA SET
bit 8
1
bit 7
1
bit 6
1
bit 5
1
bit 4
1
ENTER
bit 3
1
bit 2
1
bit 1
1
TEST
PRINT
ON
➁
MODE SELECT
5
DISPLAY
6
7
4
8
3
9
2
0
0
0
0
0
0
0
0
OFF
RY9-0104
SET UP
10
1
Figure 4-8-5
Table 4-8-6
Mode select 1
bit
D
I
S
P
L
A
Y
S
E
T
U
P
4 - 44
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
Display Content Details/ Set Up Content Details
Fixing unit malfunction
BD malfunction
Laser malfunction
Main motor malfunction
Scanner motor malfunction
Fan motor malfunction
Duplex pick-up roller malfunction (When duplexing unit is installed)
Lifting plate malfunction
Side registration guide malfunction (When duplexing unit is installed)
Misprint
Cartridge-out
Paper-out
Door open
Jam
Printer ready
11
CANON INC.
MADE IN JAPAN
CHAPTER 4
c. Itemize the Data Set
Select SET UP with the DISPLAY/SET UP switch. Various settings and commands can be made
according to the DATA SET (see table 4-8-4).
For example, when commanding a test print pick-up, delivery tray allocation or pattern setting operation, follow the steps below by operating the the tester. (when you want to have paper
picked-up from the multi-purpose tray, duplex-print a horizontal line test print pattern and
deliver it through the face up tray.)
1) When the printer has entered standby mode, set the DISPLAY/SET UP switch on the tester
to "SET UP".
2) Set the MODE SELECT to "8".
3) Set DATA SET switch bit 8 to 0, bit 7 to 1, bit 6 to 0, bit 5 to 0, bit 4 to 1, bit 3 to 1, bit2 to
0 and bit 1 to 1 (see Table 4-8-7).
4) Press the ENTER switch.
5) By turning the TEST PRINT switch ON once, a test print can be made.
PRINTER DRIVER
DATA
bit 16 bit 15 bit 14 bit 13 bit 12 bit 11 bit 10
bit 8
1
bit 7
1
bit 6
1
bit 9
bit 8
DC24V
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
➂
➃
➄
DATA SET
ENTER
TEST
PRINT
bit 5
1
bit 4
1
bit 3
1
bit 2
1
bit 1
1
ON
➀
➁
MODE SELECT
DISPLAY
5
6
7
4
8
3
9
2
0
0
0
0
0
0
0
0
OFF
RY9-0104
SET UP
10
1
11
CANON INC.
MADE IN JAPAN
Horizontal lines (image pattern) setting
Duplex print setting
Face-up tray delivery allocation
Multi-purpose tray pick-up allocation
Figure 4-8-6
Notes: 1. After setting a test print in this mode, the data will remain the same even if the test
print is set in another mode.
2. By keeping the TEST PRINT switch "ON", continuous test prints will be made.
3. When setting the image pattern to "All black", do not make duplex prints.
4 - 45
CHAPTER 4
Table 4-8-7
Mode select 8
bit
16
2
1
Display content details
Initial residual jam
Electrical unit fan malfunction
Fixing unit fan malfunction
SET UP
Pick-up slot
bit 8
0
0
0
0
bit 7
0
0
1
1
bit 6
0
1
0
1
Delivery slot
Print
Image pattern
mode
bit 5
bit 3
0
0
bit 4
bit 2
bit 1
0
1
0
1
0
0
1
1
0
1
0
1
Lower cassette pick-up
Upper cassette pick-up
Multi-purpose tray pick-up
Envelope feeder pick-up
Face-down tray delivery
Face-up tray delivery
Single side print
Duplex print
Vertical lines
Horizontal lines
All-white
All-black
Table 4-8-8
Mode select 3
bit
16
S
E
T
U
P
2
1
8
7
6
5
4
3
2
1
Display Content Details/ Set Up Content Details
Lights when the upper cassette pick-up function is ready in the printer
Lights when there are envelopes loaded in the envelope feeder.
Lights when paper is present at the re-feed position
RDYINH set (Note 1)
Forced laser emission (WX only)
Service mode (1: start, 0: stop) (72X only)
Display panel light up test (WX only)
Sleep mode (1: deep mode, 0: nap mode) (Note 2)
Sleep set (Note 3)
Notes: 1. When performing the ready inhibit setting, set MODE SELECT to "3" and turn ON the
printer while pressing the ENTER switch.
2. Deep mode halts all drives. (stop +24V supply)
Nap mode halts all drives except the fan motor.
3. The sleep mode setting can not be released. When releasing, turn the printer power
ON/OFF again.
4 - 46
CHAPTER 4
H. Solvents and Oil List
Table 4-8-9
No.
Material name
1
Alcohol: ethyl
(pure or
denatured) or
isopropyl (pure
or denatured)
Cleaning: plastic,
rubber
C2H5OH,
(CH3)2CHOH
• Purchase locally
• Flammable: keep away
from flame
2
MEK (methyl
ethyl ketone)
Cleaning: oil and toner
stains
CH3CO-C2H5
• Purchase locally
• Highly flammable: keep
away from flame
3
Lubricating oil
Apply between gear
and shaft
Petroleum mineral oil
• Tool No. CK-8003
(100 ml bottle)
4
Lubricating
agent
Apply to gears
Special oil
Special solid lubricating
material
Lithium soap
• Tool No. HY9-0007
(20 g tube)
5
Lubricating
agent
Apply to gears of the
pick-up unit
Lithium oil
• Tool No. CK-8005
(40 g bottle)
6
Lubricating
agent
Apply to gears of the
pick-up unit
(Refer to Chapter 3)
Poly α olefin oil
Lithium soap
• Tool No. CK-8009
(20 g tube)
Use
Components
Remarks
4 - 47
CHAPTER 4
IX. LOCATION OF CONNECTORS
J1001
J202
J205
J1401
J203
J208
J215
J6
J229
J206J207
J210
J18
J1
J12
J218
J3
J13
J216
J221
J34
J35
J12
J1601A
J26
J25
J1601B
J1402
J225
J11
J219
J14
J15
J16
J17
J209
J1201
J1206
J13
J14
J1204
J1205
J1202
J1203
Figure 4-9-1
4 - 48
CHAPTER 4
J204
J54
J55
J19
J10
J24
J56
J51
J222
J213
J214
J217
J1302
J1304
J1303
J1301
J50
J102
Figure 4-9-2
4 - 49
CHAPTER 4
4 - 50
APPENDIX
I.
GENERAL TIMING CHART ..... A-1
III. LIST OF SIGNALS .................. A-5
II.
GENERAL CIRCUIT DIAGRAM
IV.
A-3
MESSAGES TABLE ................ A-11
I.
GENERAL TIMING CHART
• Timing chart for two consecutive prints on A4 paper (Lower cassette feed - face-down tray delivery)
Power switch ON
Operation
160°C
(Unit: Seconds)
WAIT
170°C 169°C
control1 Fixing roller heater (H1, H2)
2 Fan (FM1, FM2, FM3, FM4)
3 Fan (FM5)
STBY
INTR
PRINT
LSTR
190°C
control
190°C control
STBY
169°C control
Low-speed rotation
High-speed rotation
About 15.0
Low-speed rotation
169°C control
About 30.0
About 30.0
Low-speed rotation
4 PRINT signal (/PRNT)
5 VERTICAL SYNC signal (/VSYNC)
6 Scanner motor (M1)
3.25
7 Scanner motor ready (/SCNRDY)
About 1.5
8 Main motor (MT1)
9 Cassette pick-up solenoid (SL1)
About 1.5
10 Pick-up motor (SMT1)
High-speed
(CL2)rotation
11 Feed clutch
About 1.2
0.52
About 0.9
0.2
About 0.7
1.1
Rotation
12 Registration clutch (CL1)
0.04
0.04
0.01
0.01
13 Pick-up unit paper sensor (PS2)
About 1.5
14 Registration paper sensor (PS1)
15 Fixing unit delivery sensor (PS1403)
16
0.77
Face-down tray delivery sensor (PS1402)
1.79
17 Primary voltage (AC)
0.52
18 Primary voltage (DC)
0.05
19 Developing bias (AC)
About
21 Transfer voltage
23 Upper fixing roller bias
1.74
0.82
20 Developing bias (DC)
22 Static charge eliminator bias
0.05
Negative bias
Negative bias
0.1
0.31
Between-page bias
0.31
Print bias
Between-page bias
0.05
0.37
0.47
High-voltage bias
A-1
GENERAL CIRCUITII.@æH}
DIAGRAM-1/2
II.
2
FEDAND
FEDAD
J203
FEDBND
/FPO
FEDBD
/FPI
/UDECKS
UDECKC /FPCS
/FEEDCLD FPCK
+5V
/FEEDS
+5V
/PUPSLD
GND
LDECKC
/LDECKS
LPVS2
J202
LPVS1
/LENBL
UPVS2
/LON
UPVS1
/VDO
/RDOORS
GND
+24VA
VDO
P5VB1
N.C.
GND
GND
GND
+5V
GND
DRVES
GND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1 2 3 4 5 6 7
1 2 3 4 5 6 7
1 2 3
1 2 3
J13
1 2 3
3 2 1
1 2
2 1
1 2 3 4 5
J12
1 2 3
1 2 3 4 5
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3
1 2 3
3 2 1
3 2 1
1 2 3 4 5
2 1
1 2 3 4 5
1 2 3 4
FAN1
J15
1 2
J14
J17
J16
Ferrite
core
J207
+5V
J222
/SCNRDY
TSWOUT
/SCND
FSRTH
GND
GNDTH
/SCNCLK
TSWIN
24VGND
+24VA
1 2 3 4 5 6
J219
/MMRDY
/MMOTD
24VGND
24VGND
+24VB
+24VB
J218
1 2 3 4 5 6 7 8 9
11 10 9 8 7 6 5 4 3 2 1
11 10 9 8 7 6 5 4 3 2 1
4 3 2 1
FAN3
Fixing unit/
Scanner unit
fan
FSRTH
RLD
TSWIN
GND
TSWOUT
/FSRD1
/FSRD2
FSRDE
J209
FSRCT
SUPSLT /REGCLD
+24VA
/RLDSNS
/REGS
PSTYP
GND
/REMT24
P5VB1
N.C.
1 2 3 4 5 6 7 8 9 10
7 6 5 4 3 2 1
7 6 5 4 3 2 1
J18
A1
B1
A2
B2
A3
B3
A4
B4
A5
B5
A6
B6
A7
B7
A8
B8
A9
B9
A10
B10
A11
B11
A12
B12
J220
TRFVCNT A1
/TRFNVD B1
TRFVSNS A2
/HRLBD B2
/TRFCCD A3
/DCHGBD B3
TRFCLK A4
/DCHGUP B4
N.C. A5
N.C. B5
HVTCLK A6
N.C. B6
/DEVACD A7
PRJACCLK B7
DEVACCLK A8
/PRJACD B8
/DEVDCD A9
/PRJACD B9
TONSNS A10
DENADJ B10
24VGND A11
24VGND B11
+24VB A12
+24VB B12
J214
FAN5D
/FAN5S
24VGND
24VGND
J229
1 2 3 4
24VGND
+24VA
P5VB1
/MPTCLD
/MPTSLD
MPTLS
/MPTPS
ENVCMD
ENVSTS
J201
A1
B1
C1
A2
B2
C2
A3
B3
C3
A4
B4
C4
A5
B5
C5
A6
B6
C6
A7
B7
C7
A8
B8
C8
A9
B9
C9
A10
B10
C10
A11
B11
C11
A12
B12
C12
A13
B13
C13
A14
B14
C14
A15
B15
C15
A16
B16
C16
GND
GND
VDO
GND
GND
/VDO
/FPCS
/FPO
/FPI
reserved
reserved
FPCK
/VSREQ
/RDY
/PPRDY
/VSYNC
/CPRDY
/PRNT
/STS
/SBSY
/PCLK
/CMD
/CBSY
/CCLK
CPSEL
/PRFD
/CCRT
/SPCHG
/PFED
/PDLV
3.3V
3.3V
3.3V
3.3V
3.3V
3.3V
+5V
+5V
+5V
+5V
+5V
+5V
GND
GND
GND
GND
GND
/BD
DC controller PCB
1 2 3 4 5 6 7
J6
J1
CL
7 6 5 4 3 2 1
1 2 3 4 5 6 7
4 3 2 1
Electrical
unit fan
Registration
PS1 paper sensor
Registration
clutch
CL1
1 2 3 4 5 6 7 8 9 10
J701
7 6 5 4 3 2 1
BD
7 6 5 4 3 2 1
A16
B16
C16
A15
B15
C15
A14
B14
C14
A13
B13
C13
A12
B12
C12
A11
B11
C11
A10
B10
C10
A9
B9
C9
A8
B8
C8
A7
B7
C7
A6
B6
C6
A5
B5
C5
A4
B4
C4
A3
B3
C3
A2
B2
C2
A1
B1
C1
7 6 5 4 3 2 1
Scanner
motor
J206
HVT
Laser driver
PCB
J1001
J3
TB705
Video controller
Operation
panel
D
3 2 1
1 2 3
J204
J208
+5V
FAN1D
3.3V
/FAN1S
+5V
24VGND
3.3V
GND
GND
J210
GND
24VGND FAN3D
+24V
/FAN3S
24VGND 24VGND
From fixing unit
1
J11
3
GND
GND
/BDI
+5V
GND
4
5
J217
6
1 2 3
1 2 3
A1B1A2B2A3B3A4B4A5B5
J221
1 TONSNS
2 GND
J223
J228
1 /REGCLD
2 24VGND
FAN2
J26
Ferrite core
3
2
1
1
2
3
1 2 3 4 5 6 7 8
Fixing unit fan
J225
3
2
1
J19
1
2
3
FAN4
Duplexing unit
(option)
1 2 3 4 5 6
Upper cassette
paper-level
sensor 2
PS1207
Lower cassette
paper-out
sensor
PS1208
J1206
/RDOORS 3
GND 2
P5VB1 1
J13
3 1
2 2
1 3
PS2
1
2
3
J14
3 1
2 2
1 3
Pick-up unit
paper sensor
PS3
1
2
3
Pick-up unit
door sensor
2 1
J55
J51
J1205
/FEEDS 3
GND 2
P5VB1 1
J54
2 1
J56
Upper cassette
paper-level
sensor 1
PS1206
J10
6 5 4 3 2 1
Fixing sub heater J53
H2
Feed clutch
CL
6 5 4 3 2 1
J52
CL2
B
A
1 2 3 4 5 6
Cassette pick-up
solenoid
H1
2
1
1 2 3 4 5 6
1 2 3 4 5 6
6 5 4 3 2 1
TB51
J1204
+24VA 2
/FEEDCLD 1
1 2 3 4 5 6
6 5 4 3 2 1
Fixing main heater
Lower cassette
paper-level
sensor 2
PS1205
TB50
1 2 3 4 5 6
TB54
PS1204
2
1
Power supply
Pick-up motor
SL1
J1203
+24VA 2
/PUPSLD 1
J204
FSRN1
FSRL1
FSRL2
FSRN2
J102
J1201
Lower cassette
paper-level
sensor 1
1 2 3 4
SMT1
M
TH
J12
PS1203
1
2
3
4
CL
CL3
Manual feed
clutch
Envelope feeder
(option)
Power supply fan
3
2
1
1
2
3
4
Upper cassette
sensor
J1202
FEDAD 1
FEDAND 2
FEDBD 3
FEDBND 4
1
2
3
4
8
7
6
5
4
3
2
1
TB705
PS1202
1 2 3 4 5 6 7 8 9 10
1 2 3 4
To HVT
PCB
2
1
2
1
Pick-up PCB
Lower cassette
sensor
TB52
Multi-purpose
tray fan
Main motor
Power switch
PS1201
TSW
FAN5
SW101
B
PS1302
Lifting plate
position sensor
Cassette-size
sensing switch PCB
J25
FAN4D 1
/FAN4S 2
24VGND 3
GND 4
J1303
+24VA 2
/MPTCLD 1
1 2 3
1 2 3 4 5 6
MT1
SL2
Lifting plate
solenoid
Multi-purpose
tray paper sensor
1 2 3
SW1601
SW1602
SW1603
SW1604
5
4
3
2
1
3 2 1
1 2 3 4 5 6 7 8 9 10 11 12 13 14
20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
TB53
J1601B
5
4
3
2
1
3 2 1
SL3
Face-up
solenoid
Cassette-size
sensing switch PCB
J1302
+24VA 2
/MPTSLD 1
PS1301
1 2 3 4 5 6 7
J50
5
4
3
2
1
SW1601
SW1602
SW1603
SW1604
J216
GND 3
/FAN2S 2
FAN2D 1
Multi-purpose
tray PCB
1 2
A1B1A2B2A3B3A4B4A5B5
C
Thermistor
1 3.3V
2 +5V
3 GND
4 FSRTH
5 GND
6 SVIN
7 SVOUT
8 +24VA
Switch/sensor
PCB
1 2 3 4 5 6 7 8 9
J24
1
2
3
4
J212
8
7
6
5
4
3
2
1
Fixing unit
delivery
sensor
Face-down
tray delivery
sensor
1 2
J1601A
5
4
3
2
1
J213
24VGND
24VGND
/DUPCLK
DUPCMD
/DUPSTS
/DUPIDS
+24VA
+24VA
1 2 3 4 5 6 7 8 9
Face-down
tray paper full
sensor
1 2 3 4 5 6 7 8 9 10 11 12 13 14
20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
+24VA
ENVCMD
ENVSTS
GND
1
2
3
4
5
6
7
8
9
10
Ferrite
core
PS1403
1
2
3
4
GND
LSIZE4
LSIZE3
LSIZE2
LSIZE1
GND
USIZE4
USIZE3
USIZE2
USIZE1
1
2
3
4
5
6
7
8
9
10
PS1402
J1304
J215
PS1401
J1301
1
2
3
4
5
6
7
8
9
10
11
J34
1
2
3
4
5
6
7
8
9
10
11
1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 2 3 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
FGND
J35
GND
GND
+24VA
+24VA
+24VA
UDOORS
FDFULS
/FPOUTS
FDOUTS
/FUSLD
P5VB1
1 2 3 4 5 6 7 8 9
Door switch
/FUSLD
+24VA
J205
SW1401
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Thermoswitch
J1401
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J1402
1
2
3
SL
+24VB 1
+24VB 2
+24VB 3
Fixing unit
A
Upper cassette
paper-out sensor
A-3
GENERAL CIRCUIT DIAGRAM-2/2
J3/4
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
VCC
D30
D28
D26
D24
D22
D20
D18
D16
GND
D14
D12
D10
D8
D6
D4
D2
D0
A2OD
GND
AA26
AA24
AA22
AA20
AA18
AA16
AA14
AA12
AA10
AA8
A3OD
nRCS0D
nRCS2
nWR0
nWR1
VCC
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
GND
D31
D29
D27
D25
D23
D21
D19
D17
GND
D15
D13
D11
D9
D7
D5
D3
D1
A2EV
VCC
A3EV
AA25
AA23
AA21
AA19
AA17
AA15
AA13
AA11
AA9
WnR
nRCS1
nRCS3
nRD0
nRD1
GND
J6/7
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
GND
MD30
MD28
MD26
MD24
N.C.
BMA1
BMA3
BMA5
BMA10
MD23
MD21
MD19
MD17
N.C.
BMA8
nBAS3
MD16
MD15
GND
nBCAS1
nBCAS2
nBCAS3
WRITE*
MD13
MD11
MD9
N.C.
MD6
MD3
VCC
MD1
N.C.
N.C.
N.C.
N.C.
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
MD31
MD29
MD27
MD25
VCC
BMA0
BMA2
BMA4
BMA6
N.C.
MD22
MD20
MD18
BMA7
VCC
BMA9
nBAS2
N.C.
MD14
nBCAS3
nBCAS0
nBCAS2
N.C.
N.C.
MD12
MD10
MD8
MD7
MD5
MD4
MD2
MD0
N.C.
N.C.
N.C.
GND
nSTROBE
D0
D1
D2
D3
D4
D5
D6
D7
nACK
BUSY
PERROR
SELECT
nAUTOFD
N.C.
GND
GND
PP 5V
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
nINIT
nFAULT
N.C.
N.C.
N.C.
nSELIN
GND
GND
VCC (5V)
VCC (5V)
VCC (3.3V)
VCC (3.3V)
nSPCHG
CPSEL
nCMD
nSTS
nVSYNC
nVSREQ
N.C.
nFP_CS
GND
GND
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
GND
GND
VCC (5V)
VCC (5V)
VCC (3.3V)
VCC (3.3V)
nPFED
nPRFD
nCBSY
nSBSY
nCPRDY
nRDY
N.C.
nFP_OD
GND
GND
To host computer
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
GND
GND
nTX
nCLK
nCLKEN
nRX
N.C.
nSTROBE
N.C.
N.C.
N.C.
nRETURN
nSPCHG
nPFED
nPRINT
nVSYNC
RESET
N.C.
VCC
VCC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
nHREST
GND
IOD7
IOD8
IOD6
IOD9
IOD5
IOD10
IOD4
IOD11
IOD3
IOD12
IOD2
IOD13
IOD1
IOD14
IOD0
IOD15
GND
N.C.
N.C.
GND
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
nWR0
GND
nRD0
GND
N.C.
N.C.
N.C.
GND
nIDE INT
N.C.
IOA3
N.C.
IOA2
IOA4
nIDECS
IOA5
nIDE LED
GND
VCC
VCC
GND
N.C.
D
C
J11
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
nBD
GND
VCC (5V)
VCC (5V)
VCC (3.3V)
VCC (3.3V)
nPDLV
nCCRT
nCCLK
N.C.
nPRNT
nPPRDY
nFP_CK
nFP_ID
nVDO
VDO
J1
J9
A-4
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
J10
J8
Video controller PCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
To DC controller PCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
VCC
nPS INT
nHRESET
nWR0
nPSIOCS
N.C.
GND
IOD0
IOD2
IOD4
IOD6
IOD8
IOD10
IOD12
IOD14
GND
IOA2
IOA4
IOA6
IOA8
IOA10
IOA12
IOA14
IOD16
VCC
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
GND
nWAIT
WnR
nRD0
IOA23
N.C.
GND
IOD1
IOD3
IOD5
IOD7
IOD9
IOD11
IOD13
IOD15
GND
IOA3
IOA5
IOA7
IOA9
IOA11
IOA13
IOA15
IOA17
GND
Expansion interface board
GND
D31
D29
D27
D25
D23
D21
D19
D17
GND
D15
D13
D11
D9
D7
D5
D3
D1
A2EV
VCC
A3EV
AA25
AA23
AA21
AA19
AA17
AA15
AA13
AA11
AA9
WnR
nRCS1
nRCS3
nRD0
nRD1
GND
2
Option controller interface board
(option)
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24
B25
B26
B27
B28
B29
B30
B31
B32
B33
B34
B35
B36
Firmware ROM DIMM
VCC
D30
D28
D26
D24
D22
D20
D18
D16
GND
D14
D12
D10
D8
D6
D4
D2
D0
A2OD
GND
AA26
AA24
AA22
AA20
AA18
AA16
AA14
AA12
AA10
AA8
A3OD
nRCS0D
nRCS2
nWR0
nWR1
VCC
(option)
J2
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33
A34
A35
A36
3
Hard disk (option)
4
5
Optional RAM DIMM
6
Optional ROM DIMM
II.
B
A
APPENDIX
III. LIST OF SIGNALS
A. Input/output signals to/from DC controller PCB
Connector
J201
Pin
A1
Abbreviation I/O Logic
GND
A2
GND
A3
/FPCS
A4
Reservrd
A5
/VSREQ
A6
A7
Signal name
I
L
OPERATION PANEL CONTROLLER CHIP SELECT signal
O
P
VSYNC REQUEST signal
/VSYNC
I
P
VERTICAL SYNC signal
/STS
O
L
STATUS signal
A8
/CMD
I
L
A9
/CPSEL
I
ANALOG
A10
/SPCHG
O
L
SPEED CHANGE signal
A11
3.3V
O
A12
3.3V
O
A13
+5V
O
A14
+5V
O
A15
GND
O
L
OPERATION PANEL SERIAL OUTPUT signal
O
L
READY signal
A16
GND
B1
GND
COMMAND signal
COMTROLLER POWER SELCT signal
B2
GND
B3
/FPO
B4
Reserved
B5
/RDY
B6
/CPRDY
I
L
CONTROLLER POWER READY signal
B7
/SBSY
O
L
STATUS BUSY signal
B8
/CBSY
I
L
COMMAND BUSY signal
B9
/PRFD
I
L
PRE-FEED signal
B10
/PFED
O
L
PAPER FEED signal
B11
3.3V
O
B12
3.3V
O
B13
+5V
O
B14
+5V
O
B15
GND
B16
GND
C1
VDO
I
H
VIDEO signal
C2
/VDO
I
L
VIDEO signal
C3
/FPI
I
L
OPERATION PANEL SERIAL INPUT signal
C4
FPCK
I
P
OPERATION PANEL SERIAL CLOCK signal
C5
/PPRDY
I
L
PRINTER POWER READY signal
C6
/PRNT
I
L
PRINT signal
C7
/PCLK
O
P
PRINTER CLOCK signal
C8
/CCLK
I
P
CONTROLLER CLOCK signal
C9
/CCRT
O
L
CONDITION CHANGE REPORT
C10
/PDLV
O
L
PAPER DELIVERY signal
C11
3.3V
O
C12
3.3V
O
A-5
APPENDIX
Connector
J201
J202
J203
J204
J205
J206
A-6
Pin
C13
Abbreviation I/O Logic
+5V
O
C14
+5V
C15
GND
C16
/BD
1
GND
2
DRVES
3
GNP
4
5V
5
GND
6
N.C.
7
VDO
8
GND
Signal name
O
O
P
I
ANALOG
BEAM DETECTION signal
LASER MALFUNCTION DETECTION signal
O
O
H
VIDEO signal
9
/VDO
O
L
VIDEO signal
10
/LON
O
L
LASER ON signal
11
/LENBL
O
L
VIDEO ERABLE signal
1
/FPO
O
L
OPERATION PANEL SERIAL OUTPUT signal
2
/FPI
I
L
OPERATION PANEL SERIAL INPUT signal
3
/FPCS
O
L
OPERATION PANEL CONTROLLER CHIP SELECT signal
4
FPCK
I
P
OPERATION PANEL SERIAL CLOCK signal
5
+5V
O
6
+5V
O
7
GND
A1
+5V
I
A2
+5V
I
A3
GND
A4
GND
A5
24V
I
B1
3.3V
I
B2
3.3V
I
B3
GND
B4
24VGND
B5
24VGND
1
GND
2
GND
3
+24VA
O
4
+24VA
O
5
+24VA
O
6
UDOORS
I
H
UPPER DOOR OPEN SENSE signal
7
FDFULS
I
H
FACE-DOWN TRAY PAPER FULL SENSE signal
8
/FPOUTS
I
H
FIXING UNIT DELIVERY SENSE signal
9
FDOUTS
I
H
FACE-DOWN TRAY DELIVERY SENSE signal
10
/FUSLD
O
L
FACE-UP SOLENOID DRIVE signal
11
P5VB1
O
1
GND
P
BEAM DETECTION INPUT signal
2
GND
3
/BDI
4
+5V
5
GND
I
APPENDIX
Connector
J207
J208
J209
J210
J212
J213
J214
J215
Pin
1
Abbreviation I/O Logic
+5V
Signal name
2
/SCNRDY
I
L
SCANNER MOTOR READY signal
3
/SCND
O
L
SCANNER MOTOR DRIVE signal
4
GND
5
/SCNCLK
O
P
SCANNER MOTOR CONTOL CLOCK signal
6
24VGND
7
+24VA
O
1
FAN1D
O
ANALOG
2
/FAN1S
I
L
FAN MOTOR 1 ROTATING DETECTION signal
3
24VGND
1
/REGCLD
O
L
REGISTRATION CLUTCH DRIVE signal
2
+24VA
O
3
/REGS
I
L
REGISTRATION PAPER SENSE signal
4
GND
5
P5VB1
O
1
FAN3D
O
ANALOG
2
/FAN3S
I
L
3
24VGND
1
3.3V
O
2
+5V
O
3
GND
4
FSRTH
I
ANALOG
FAN MOTOR 1 DRIVE signal
FAN MOTOR 3 DRIVE signal
FAN MOTOR 3 ROTATING DETECTION signal
FIXING ROLLER TEMPERATURE SENSE signal
5
GND
6
SVIN
I
SERVICE STATUS signal
7
SVOUT
O
SERVICE COMMAND signal
8
+24VA
O
1
+24VA
O
2
+24VA
O
3
/DUPIDS
I
L
DUPLEXING UNIT SENSE signal
4
/DUPSTS
I
L
DUPLEXING UNIT STATUS signal
5
DUPCMD
O
H
DUPLEXING UNIT COMMAND signal
6
/DUPCLK
O
P
STATAS CLOCK signal
7
24VGND
8
24VGND
1
24VGND
2
+24VA
L
MANUAL FEED CLUTCH DRIVE signal
O
3
P5VB1
O
4
/MPTCLD
O
5
/MPTSLD
O
L
LIFTING PLATE SOLENOID DRIVE signal
6
MPTLS
I
H
LIFTING PLATE SENSE signal
L
7
/MPTPS
I
8
ENVCMD
O
ENVELOPE FEEDER COMMAND signal
MULTI-PURPOSE TRAY PAPER SENSE signal
9
ENVSTS
I
ENVELOPE FEEDER STATUS signal
1
GND
2
LSIZE4
I
L
LOWER CASSETTE PAPER SIZE SENSE signal
3
LSIZE3
I
L
LOWER CASSETTE PAPER SIZE SENSE signal
4
LSIZE2
I
L
LOWER CASSETTE PAPER SIZE SENSE signal
5
LSIZE1
I
L
LOWER CASSETTE PAPER SIZE SENSE signal
A-7
APPENDIX
Connector
J215
J216
J217
J218
J219
A-8
Pin
6
Abbreviation I/O Logic
GND
Signal name
7
USIZE4
I
L
UPPER CASSETTE PAPER SIZE SENSE signal
8
USIZE3
I
L
UPPER CASSETTE PAPER SIZE SENSE signal
9
USIZE2
I
L
UPPER CASSETTE PAPER SIZE SENSE signal
10
USIZE1
I
L
1
FAN2D
O
ANALOG
2
/FAN2S
I
L
3
24VGND
UPPER CASSETTE PAPER SIZE SENSE signal
FAN MOTOR 2 DRIVE signal
FAN MOTOR 2 ROTATING DETECTION signal
1
FSRTH
I
ANALOG
2
RLD
O
H
RELAY DRIVE signal
3
TSWIN
4
GND
5
TSWOUT
6
/FSRD1
O
L
FIXING MAIN HEATER DRIVE signal
7
/FSRD2
O
L
FIXING SUB HEATER DRIVE signal
8
FSRDE
O
H
FIXING HEATER DRIVE ENABLE signal
FIXING ROLLER TEMPERATURE SENSE signal
FIXING HEATER CURRENT SENSE signal
9
FSRCT
I
ANALOG
10
SUPSLT
O
H
INVERTER CIRCUIT CONTROL signal
11
/RLDSNS
I
L
RELAY DETECTION SENSE signal
12
PSTYP
I
13
REMT24
O
14
N.C.
POWER SUPPLY TYPE SENSE signal
L
24V DRIVE signal
1
/MMRDY
I
L
MAIN MOTOR READY signal
2
/MMOTD
O
L
MAIN MOTOR DRIVE signal
3
24VGND
4
24VGND
5
+24VB
O
6
+24VB
O
1
FEDAND
O
PICK-UP MOTOR CONTROL signal
2
FEDAD
O
PICK-UP MOTOR CONTROL signal
3
FEDBND
O
PICK-UP MOTOR CONTROL signal
4
FEDBD
O
PICK-UP MOTOR CONTROL signal
5
/UDECKS
I
L
UPPER CASSETTE PAPER-OUT SENSE signal
6
UDECKC
I
H
UPPER CASSETTE SENSE signal
7
/FEEDCLD
O
L
FEED CLUTCH DRIVE signal
8
/FEEDS
I
L
PICK-UP UNIT PAPER SENSE signal
9
/PUPSLD
O
L
CASSETTE PICK-UP SOLENOID DRIVE signal
10
LDECKC
I
H
LOWER CASSETTE PAPER-OUT SENSE signal
11
/LDECKS
I
L
LOWER CASSETTE SENSE signal
12
LPVS2
I
LOWER CASSETTE PAPER-LEVEL SENSE signal 2
13
LPVS1
I
LOWER CASSETTE PAPER-LEVEL SENSE signal 1
14
UPVS2
I
UPPER CASSETTE PAPER-LEVEL SENSE signal 2
15
UPVS1
I
16
/RDOORS
I
17
+24VA
O
18
P5VB1
O
19
GND
20
GND
UPPER CASSETTE PAPER-LEVEL SENSE signal 1
H
PIK-UP UNIT DOOR OPEN SENSE signal
APPENDIX
Connector
J220
J221
J222
J223
J225
J229
Pin
A1
Abbreviation I/O Logic
Signal name
TRFVCNT
O ANALOG TRANSFER BIAS CONTROLL signal
A2
TRFVSNS
I
A3
/TRFCCD
O
L
TRANSFER BIAS CONSTANT CURRENT DRIVE signal
A4
TRFCLK
O
P
TRANSFER BIAS FREQUENCY OUTPUT signal
P
HIGH-VOLTAGE BIAS FREQUENCY OUT PUT signal
ANALOG
TRANSFER BIAS MONITOR signal
A5
N.C.
A6
HVTCLK
O
A7
/DEVACD
O
L
DEVELOPING AC BIAS DRIVE signal
A8
DEVACCLK
O
P
DEVELOPING AC BIAS FREQUENCY OUT PUT signal
A9
/DEVDCD
O
L
A10
TONSNS
I
ANALOG
DEVELOPING DC BIAS DRIVE signal
A11
24VGND
A12
24VB
B1
/TRFNVD
O
L
TRANSFER NEGATIVE BIAS DRIVE signal
B2
/HRLBD
O
L
FIXING ROLLER BIAS DRIVE signal
B3
/DCHGBD
O
L
DISCHARGE BIAS DRIVE signal
B4
/DCHGUP
O
L
DISCHARGE BIAS SWITCH signal
B5
N.C.
B6
N.C.
B7
PRIACCLK
O
P
PRIMARY AC BIAS FREQVENCY OUTPUT signal
B8
/PRIACD
O
L
PRIMARY AC BIAS DRIVE signal
TONER LEVEL signal
O
B9
/PRIDCD
I
L
B10
DENADJ
O
ANALOG
IMAGE DENSITY AD JUSTMENT signal
B11
24VGND
B12
24VB
I
ANALOG
FIXING ROLLER TEMPERATURE SENSE signal
I
ANALOG
TONER LEVEL signal
O
1
+24VB
I
2
+24VB
I
3
+24VB
I
1
TSWOUT
2
FSRTH
3
GNDTH
4
TSWIN
1
TONSNS
PRIMARY DC BIAS DRIVE signal
2
GND
1
FAN4D
O
H
FAN MOTOR 4 DRIVE signal
2
/FAN4S
I
L
FAN MOTOR 4 ROTATING DETECTION signal
3
24VGND
4
GND
1
FAN5D
O
ANALOG
2
/FANS5
I
L
3
24VGND
4
24VGND
FAN MOTOR 5 DRIVE signal
FAN MOTOR 5 ROTATING DETECTION signal
A-9
APPENDIX
This page intentionally left blank
A - 10
APPENDIX
IV. MESSAGES TABLE
Message
COLD RESET
COLD RESET A4
COLD RESET LTR
CONTEXT SAVE
ADJUSTED
CONTEXT SAVE
CHANGE
WARMING UP...
I/O INITIALIZING
READY
PAUSED
PRINTING...
KEY NOT VALID
RESET TO SAVE
Meaning
Action
Displays when the COLD RESET (Letter or A4) No action required although the
printer will be reset to its factory
Power-On sequence is selected.
defaults and any unique settings
will have to be reset.
No action required.
Displays when Factory Reset - A4
Power-on sequence is selected.
No action required.
Displays when Factory Reset - LTR
Power-on sequence is selected.
Context Saving mechanism modified by OS. Press Continue key to continue.
Displayed when printer powered on with context saving enabled, but due to manual reconfiguration, there is not enough memory to
support it.
Context saving mechanism modified by USER. Press Continue and printer will
Displayed when going online after modifying reboot to enable its new state.
context saving.
Printer is warming up.
Wait until the printer has warmed
up and displays "READY".
This message displays when one of the net- No action required.
work boads is being initialized.
Printer is ready to receive data and print.
No action required.
Printer is OFFLINE.
Press ONLINE.
Usually displayed when printing an item from No action required
the TEST MENU, or when attempting to go
Offline while the printer is busy.
Displays when a key is pressed that is not Press the correct key to complete
enabled at this time.
the current function.
RESET verification prompt. This message will Two options are available:
appear momentarily and then PAUSED. When 1. Press the reset key to enter
a menu item was changed before the printer
the RESET menu and save
releases the port on which the last job was
the information immediately.
processed, such as in the middle of a job, or
This will terminate the curbefore the port timed out.
rent job, deleting temporary
RESET TO SAVE doesn't display or take
fonts, macros and buffered
effect for the following menu items:
data.
Parallel menu
2. Press ONLINE and the cur-bidirectional=on/off
rent job will resume where it
Config menu
left off. The menu items
-density
changed will not take effect
-pwrsav
until the next end of job.
paper type menu
-upper
-lower
-deck
-mpt
feeder menu
-mptsize
A - 11
APPENDIX
Message
RESETTING PRINTER
RESTORING
DEFAULTS
MEMORY OVERFLOW
READY
MRT COMPRESSION
+ FORMAT DISK\
- IGNORE DISK
+ REALLY FORMAT
- IGNORE DISK
START DISK TEST
ENTER ENDS TEST
FORMATTING...
DSK FMT RESTART
A - 12
Action
Meaning
-envsize
Displays when TEST/RESET PRINTER item is
selected
Displays when TEST/FACTORY DEFAULTS
item is selected.
Memory overflow. The printer received more
data than it can fit into its available memory.
This can happen if too many soft fonts,
macros, or graphics which are too complex are
received.
Printer has invoked MRT
because of lossy compression.
No action required
No action required.
The job will resume after 10 seconds if AUTOCONT is ON.
Otherwise press the Continue key
to resume printing. Check the
page that ejects since the page
could not be processed as
requested. Also simplify the job or
add additional memory.
Compression No action required.
Either a request has been made to format the Press + to format the disk or press
disk or the printer has determined that the - to ignore the disk.
disk needs formatting (engin a new unformatFor new/unformatted disk: If
ted disk is installed when power up).
press - to ignore disk, the printer
goes to "READY".
Any attempt to write to the
disk will be flushed since the disk
has not been formatted.
The operator is being asked to verify the disk Press + to verify that the disk is to
formatting is really wanted.
be formatted or press - to skip
This is in response to the foregoing message. formatting the disk. This message
will not display for new/unformatted disk (engin. The disk is to
be formatted for the 1st time)
Start testing the hard disk
Press Enter to start disk testing.
Note: This operation will cause
the disk to format when
press enter to end test. If
the printer is powered off
during the disk test, the
message + FORMAT
DISK \ - IGNORE DISK
will appear when the
printer is powered on.
Stop testing the hard disk
Press Enter to end disk testing.
Note: The disk will be formatted and the printer will
reboot
automatically
when press Enter to end
disk test.
This message displays when the disk is being No action required.
formatted.
The operator has formatted the disk and the Press the Continue key for the
operation has completed. The system will printer to reboot.
APPENDIX
Message
Meaning
Action
restart after the continue key is pressed.
DISK ALMOST FULL Warning message when the Disk is 70+% full. Delete pcl/ps, fonts/macros/files
or format the disk to clear the
message. The message doesn't
clear with power cycle or COLD
RESET. This message has lower
priority than printer error messages such as "toner low" or
"memory overflow".
Disk is 95% full. The printer goes offline (also Delete pcl/ps, fonts/macros/files
DISK FULL
at power up with a "disk full" installed). If or format the disk to clear the
AUTOCONT is ON, the printer will resume message. The message doesn't
back online after 10 seconds. If continue to clear with power cycle or COLD
send files to the disk that larger than the 5% RESET. This message has lower
left on the disk, the files will be flushed or priority than printer error messages such as "toner low" or
printed out as text.
"memory overflow".
Mopier is activated. ### is the total mopier No action required. This message
READY
count. # is the increment count up to ###. is temporarily displayed for the
# OF ###
Mopier is only available when the hard disk is duration of the printer's processing time. @PJL RDYMSG DISPLAY
installed.
will have higher priority than "#
OF ###" message.
A request has been made to format the flash Press + to format the flash or
+ FORMAT FLASH
press - to ignore the flash. For
rom
- IGNORE FLASH
new/unformatted flash: the printer will automatically format the
flash without any message display
when the printer is booting up.
+ REALLY FORMAT The operator is being asked to verify the flash Press + to verify that the flash is to
rom formatting is really wanted. This is in be formatted or press - to skip for- IGNORE FLASH
matting the flash.
response to the foregoing message.
This message is displayed while the flash is No action required.
FLASH
being formatted. This message also displays
FORMATTING...
when the printer is booting up with an unformatted or bad flash.
The operator has formatted the flash and the Press the Continue key for the
FLASH FORMAT
operation has completed. The system will printer to reboot.
RESTART
restart after the continue key is pressed.
FLASH OVERFLOW The printer received more fonts/macros data Press the Continue key for the
than it can fit into its FLASH ROM. The print- printer to go back to "READY".
or
deleting
er is "OFFLINE" when this message is dis- Formatting
Fonts/macros should be perplayed.
formed to regain more rom space.
Error causes by flash format failure, read or Printer goes offline. Job will be
FLASH ERROR
flushed in error occurs while
write failure.
receiving data. Turn printer off
and on. The printer will attempt to
reformat the flash when it's booting up. If the attempt to reformat
A - 13
APPENDIX
Message
####
+TO CONFIRM/CANCEL
READY
TONER LOW
TONER CART
MISSING
PRINTING TO STD
TRAY
LOAD <MEDIA>
<SIZE> IN <TRAY>
A - 14
Meaning
Action
the flash fails, FLASH ERROR will
be displayed. Remove the faulty
flash rom and replace with new
flash.
Press + to accept (confirm) the
mode change in the sorter or
press - to cancel the mode
change.
Where #### = MAILBOX, JOB SEPARATION,
STACKER, or SORTING. The operator is being
asked to confirm the mode change in the
sorter is really wanted. This is in response to
the foregoing message.
Replace the toner cartridge as
Toner is low.
soon as possible. The printer will
continue to operate, but the
images will degrade.
Add toner cartridge.
Toner cartridge is missing.
Display (for the duration that the printer takes No action required.
to process the job) when the bin(s) in the
sorter are full and the output is directed to the
standard tray.
The specified tray must be loaded
Load the specified tray with paper size.
with the specified paper size and
media type.
Size:
Depending upon circumstances,
LETTER - Letter paper size.
the Continue key may be required
LEGAL - Legal paper size.
to continue the job. If the printer
11X17 - Ledger paper size.
is printing and a tray runs out of
A3 - A3 paper size.
paper, for instance, simply loadA4 - A4 paper size.
ing the tray and closing it will
A5 - A5 paper size.
cause the printer to continue nor11x17 paper size.
mally. If, however, the printer
EXEC - Executive paper size.
does not contain the required
COM10 - Commercial #10 envelope.
paper size or media type, the user
MONARCH - Monarch envelope.
must select/change the media
DL - DL envelope.
type from front panel. Open the
C5 - C5 envelope.
tray and load the appropriate
B5JIS - B5 paper size.
media type/paper size into the
B5ISO - B5 envelope.
specified tray. The printer will
B4 - B4 paper size.
resume printing after the tray is
CUSTOM - Custom paper size.
reinstalled. In the case of manual
ANY - Unknown paper size.
feed (discussed following), the
Continue key must always be
Tray:
pressed.
UPPER - Internal upper cassette.
LOWER - Internal lower cassette.
DECK - 2000 sheet Large Capacity tray.
DECK1 - Upper cassette of 2x500 deck.
DECK2 - Lower cassette of 2x500 deck.
MPT - Multi-purpose tray.
ENV. - Envelope feeder.
ANY TRAY - any paper tray that can support
Letter, Legal, B4 or A4
APPENDIX
Message
Meaning
LOAD <MEDIA>
<SIZE> IN MANUAL
LOAD BLANK SIDE
UP IN MANUAL
Media Type:
PLAIN - Plain
LETTERHEAD - Letterhead
TRANSPARENCY - Transparency
LABELS - Labels
BOND - Bond
RECYCLED - Recycled
COLOR - Color
CARDSTOCK - Cardstock
ROUGH - Rough paper
CUSTOM1 - or user defined media type
CUSTOM2 - or user defined media type
CUSTOM3 - or user defined media type
CUSTOM4 - or user defined media type
CUSTOM5 - or user defined media type
CUSTOM6 - or user defined media type
Note: User defined media type name can be
up to 15 maximum characters long.
Load multi-purpose tray with paper size. Like
"Load" but for manual feed only.
This message displays right after the front
side of the cleaning page has been created.
LOAD CLEANING
PAGE IN MANUAL
LOAD STAPLES
UPPER TRAY
IN MOTION
LOWER TRAY
IN MOTION
DECK TRAY
IN MOTION
DECK1 TRAY
IN MOTION
DECK2 TRAY
IN MOTION
UPPER MISSING
LOWER MISSING
DECK MISSING
DECK1 MISSING
Action
Press the Continue key to resume
printing.
Load the blank side face-up in the
multi-purpose tray. Press the
Continue key to create the other
side of the cleaning page.
This message displays right after a cleaning Load the cleaning page face-down
in the multi-purpose tray. Press
page has been created.
the CONTINUE READY key to
start cleaning.
Staples low. Only the current job will be sta- Load staples. The printer will
resume to READY. The printer is
pled.
now ready to staple.
The upper cassette is repositioning the stack No Action Required.
after new paper was loaded.
The lower cassette is repositioning the stack No Action Required.
after new paper was loaded.
The paper tray in the 2,000 sheet deck is repo- No Action Required.
sitioning the stack after new paper was
loaded.
The upper cassette in the 2x500 sheet deck is No Action Required.
repositioning the stack after new paper was
loaded.
The lower cassette in the 2x500 sheet deck is No Action Required.
repositioning the stack after new paper was
loaded.
The specified upper cassette is missing.
Reinsert the upper cassette.
The specified lower cassette is missing.
Reinsert the lower cassette.
The specified deck (2,000 sheet deck) is miss- Reinsert the deck.
ing.
The specified upper cassette (2x500 sheet Reinsert the upper cassette.
A - 15
APPENDIX
Message
DECK2 MISSING
OUTPUT FULL
STD. TRAY
OUTPUT FULL
CHECK BIN 1
OUTPUT FULL
CHECK BIN 2
OUTPUT FULL
CHECK BIN 3
OUTPUT FULL
SORTER BIN UP
CHECK SORTER
BIN
REMOVE ALL
PAPER
PRINTER OPEN
COVER OPEN
STACKER
COVER OPEN
SORTER
COVER OPEN
PAPER JAM
WRONG PAPER
SIZE
Meaning
Action
deck) is missing.
The specified lower cassette (2x500 sheet Reinsert the lower cassette.
deck) is missing.
The specified face-down tray is paper full.
Remove the paper from the facedown tray.
The specified output tray of the stapler stack- Remove the paper from the tray
(Bin1 of the stapler stacker).
er is paper full.
The specified output tray of the stapler stack- Remove the paper from the tray
(Bin2 of the stapler stacker.
er is paper full.
The specified output tray of the stapler stack- Remove the paper from the tray
(Bin3 of the stapler stacker).
er is paper full.
The specified output bin (face-up bin of the Remove the paper from the tray.
sorter) is paper full.
For use only when the sorting mode of the Remove the paper from all the
sorter is selected. Any or all of the bins of the bins (bin# 1 to 7 of the sorter).
sorter are paper full or not empty.
Close all cover doors.
Top, right or left (side) cover is open.
2,000 sheet or 2x500 sheet deck right cover Close the right cover door.
(paper path) is open.
Stapler stacker top or front (stapler door) Close all cover doors.
cover is open.
Close all cover doors.
Sorter top or front cover is open.
A paper size mismatch has occurred. More Inspect the trays for mismatched
than one paper size has been found in the paper and correct. Remove all
jammed paper and insert the corsame tray.
rect paper size in the tray. Close
all covers to go back to READY.
CHECK INPUT TRAY A paper jam occurred near the input tray.
Check the area specified.
OPEN FRONT
A paper jam occurred near the front cover.
COVER
OPEN LEFT COVER A paper jam occurred near the left cover.
OPEN RIGHT
A paper jam occurred near the right cover.
COVER
OPEN TOP COVER
A paper jam occurred near the top cover.
1 PAPER JAM
Paper jam has occurred somewhere in the Remove the jammed paper from
the paper path. The top cover
paper path.
2 PAPER JAM
Paper jam has occurred in the input paper must be opened and closed to
resume printing.
path.
3 PAPER JAM
Paper jam has occurred in the input paper
path.
4 PAPER JAM
Paper jam has occurred in the fixing unit area.
5 PAPER JAM
Paper jam has occurred in the fixing unit area.
6 PAPER JAM
Paper jam has occurred near the face-down
tray.
7 PAPER JAM
Paper jam has occurred near the face-down
tray.
8 PAPER JAM
Paper jam has occurred in the fixing unit area.
9 PAPER JAM
Paper jam has occurred near the duplexing
A - 16
APPENDIX
Message
10 PAPER JAM
11 PAPER JAM
12 PAPER JAM
13.1 PAPER JAM
CHECK DECK
13.2 PAPER JAM
CHECK DECK
13.3 PAPER JAM
CHECK DECK
13.4 PAPER JAM
CHECK DECK
14.1 PAPER JAM
OPEN RIGHT
COVER
14.2 PAPER JAM
OPEN RIGHT
COVER
14.3 PAPER JAM
OPEN RIGHT
COVER
14.4 PAPER JAM
OPEN RIGHT
COVER
CHECK INPUT
AREA
OPEN TOP COVER
CHECK OUTPUT
BINS
15.1 STACKER JAM
15.2 STACKER JAM
15.3 STACKER JAM
15.4 STACKER JAM
16.1 STACKER JAM
16.2 STACKER JAM
16.3 STACKER JAM
16.4 STACKER JAM
17.1 STACKER JAM
17.2 STACKER JAM
17.3 STACKER JAM
17.4 STACKER JAM
18.1 STACKER JAM
18.2 STACKER JAM
18.3 STACKER JAM
18.4 STACKER JAM
STAPLE JAM
OPEN STAPLER
COVER
19.1 SORTER JAM
Action
Meaning
unit.
Paper jam has occurred near the duplexing
unit.
Paper jam has occurred in the duplexing unit.
Paper jam has occurred in the duplexing unit.
Paper jam has occurred in the 2,000 sheet
deck or 2x500 sheet deck.
Paper jam has occurred in the 2,000 sheet
deck or 2x500 sheet deck.
Paper jam has occurred in the 2,000 sheet
deck or 2x500 sheet deck.
Paper jam has occurred in the 2,000 sheet
deck or 2x500 sheet deck.
Paper jam has occurred in the right cover.
Check the deck. Remove the
jammed paper from the paper
path. The top cover must be
opened and closed to resume
printing.
Paper jam has occurred in the right cover.
Paper jam has occurred in the right cover.
Paper jam has occurred in the right cover.
A paper jam occurred near the input tray.
Check the area specified.
A paper jam occurred near the top cover.
A paper jam occurred at the stapler stacker
output bins.
Jam at entrance sensor - Initial Jam
Jam at entrance sensor - Stay Jam
Jam at entrance sensor - Delay Jam
Jam at entrance sensor - Early Jam
Jam at reversing sensor - Initial Jam.
Jam at reversing sensor - Stay Jam.
Jam at reversing sensor - Delay Jam.
Jam at reversing sensor - Early Jam.
Jam at delivery paper sensor - Initial Jam
Jam at delivery paper sensor - Stay Jam
Jam at delivery paper sensor - Delay Jam
Jam at delivery paper sensor - Early Jam
Jam at staple tray paper sensor - Initial Jam
Jam at staple tray paper sensor - Stay Jam
Jam at staple tray paper sensor - Delay Jam
Jam at staple tray paper sensor
Jam near the stapler
Check the area specified.
Check the area specified.
Jam at entrance sensor - Initial Jam
Check the soter. Remove jammed
Check the stapler stacker.
Remove jammed paper and close
cover.
Clear jam
A - 17
APPENDIX
Message
19.2 SORTER JAM
19.3 SORTER JAM
19.4 SORTER JAM
20.1 SORTER JAM
20.2 SORTER JAM
20.3 SORTER JAM
20.4 SORTER JAM
21.1 SORTER JAM
21.2 SORTER JAM
21.3 SORTER JAM
21.4 SORTER JAM
22.1 SORTER JAM
22.2 SORTER JAM
22.3 SORTER JAM
22.4 SORTER JAM
DUPLEX
OPTION ERROR
ENVELOPE
OPTION ERROR
OPTIONS
CONTROLLER
OPT CONTROLLER
ERROR
OPT CONTROLLER
COMMUNICATIONS
ERROR
ERROR DISK
CALL FOR SERVICE
MEMORY ALLOC
ERROR
PS OPTION
ERROR
ETHERNET
OPTION ERROR
TOKEN RING
OPTION ERROR
10.1 ERROR FUSER
CALL FOR SERVICE
10.2 ERROR FUSER
CALL FOR SERVICE
10.3 ERROR FUSER
CALL FOR SERVICE
10.4 ERROR FUSER
A - 18
Meaning
Jam at entrance sensor - Stay Jam
Jam at entrance sensor - Delay Jam
Jam at entrance sensor - Early Jam
Jam at reversing sensor - Initial Jam
Jam at reversing sensor - Stay Jam
Jam at reversing sensor - Delay Jam
Jam at reversing sensor - Early Jam
Jam at vertical path sensor - Initial Jam
Jam at vertical path sensor - Stay Jam
Jam at vertical path sensor - Delay Jam
Jam at vertical path sensor - Early Jam
Jam at face-up delivery sensor - Initial Jam
Jam at face-up delivery sensor - Stay Jam
Jam at face-up delivery sensor - Delay Jam
Jam at face-up delivery sensor - Early Jam
The duplexing unit has been removed or is no
longer properly seated.
The envelope feeder has been removed or is no
longer properly seated.
Option controller error with 2,000 sheet deck
or 2x500 sheet deck.
Action
paper and close cover.
Re-insert the duplexing unit into
the printer.
Re-insert the envelope feeder into
the printer.
Re-connect the 2,000 sheet deck
or 2x500 sheet deck to the printer.
There is a problem with the Options Controller Replace the option controller.
Cable(s) are not connected in or there is a Reconnect cable(s) or replace the
problem with the Options Controller
option controller.
Hard Drive Failure - Read Error -
Replace the hard disk.
GRS has been unable to allocate the memory The job will resume after 10 secit needs.
onds if AUTOCONT is ON.
Otherwise press the CONTINUE
key to resume printing. Check the
page that ejects since the image
could not be processed as
requested.
Option PS ROM (DIMM) diagnostic error.
An option ROM has failed its
startup checksum and needs to
be reprogrammed or replaced.
The Ethernet boad is not communicating with Replace the Ethernet boad
the controller.
The Token Ring boad is not communicating Replace the Token Ring boad
with the controller.
Fixing unit failure (Abnormally low tempera- Perform the troubleshooting proture/warm up time out).
cedure described in section VI of
Fixing unit failure (Abnormally low tempera- Chapter 4.
ture/warm up time out).
Note: If this error occurs,
Fixing unit failure (Abnormally high temperaswitch off the printer for
ture).
15 minutes and then
Fixing unit failure (wrong type).
switch the printer back
APPENDIX
Message
CALL FOR SERVICE
11.1 ERROR SCANNER
CALL FOR SERVICE
11.2 ERROR SCANNER
CALL FOR SERVICE
11.3 ERROR SCANNER
CALL FOR SERVICE
11.4 ERROR LASER
CALL FOR SERVICE
12.1 ERROR
MOTOR
CALL FOR SERVICE
12.2 ERROR
MOTOR
CALL FOR SERVICE
13.1 ERROR FAN1
CALL FOR SERVICE
13.2 ERROR FAN2
CALL FOR SERVICE
13.3 ERROR FAN 3
CALL FOR SERVICE
13.4 ERROR FAN 4
CALL FOR SERVICE
13.5 ERROR FAN 5
CALL FOR SERVICE
14.1 ERROR AUX
TRAY
CALL FOR SERVICE
15.1 ERROR
STACKER
CALL FOR SERVICE
15.2 ERROR
STACKER
CALL FOR SERVICE
15.3 ERROR
STACKER
CALL FOR SERVICE
15.4 ERROR
STACKER
CALL FOR SERVICE
15.5 ERROR
STACKER
CALL FOR SERVICE
16 ERROR
CALL FOR SERVICE
16.1 ERROR
STACKER
Meaning
Scanner motor malfunction (start up).
Action
on.
Perform the troubleshooting procedure described in section VI of
Chapter 4.
Scanner motor malfunction (rotation).
BD/Laser malfunction
BD/Laser malfunction
Main motor malfunction (start up)
Main motor malfunction (rotation)
Fan motor 1 failure - controller
Fan motor 2 failure - power supply
Fan motor 3 failure - exhaust1
Fan motor 4 failure - exhaust2
Fan motor 5 failure - multiple
Lifting plate failure
Malfunction of paper delivery motor
Refer to Chapter 4 (troubleshooting) of the stapler stacker service
manual.
Malfunction of stapler shift motor
Malfunction of staple motor
Malfunction of lignment plate shift motor
Malfunction of tray unit elevation motor
Unknown Engine Error.
Malfunction of shutter
A - 19
APPENDIX
Message
CALL FOR SERVICE
16.2 ERROR
STACKER
CALL FOR SERVICE
17 ERROR
CALL FOR SERVICE
17.1 ERROR
STACKER
CALL FOR SERVICE
18 UPPER ERROR
CALL FOR SERVICE
18.1 ERROR DECK
CALL FOR SERVICE
18.2 ERROR DECK
CALL FOR SERVICE
19.1 ERROR
SORTER
CALL FOR SERVICE
19.2 ERROR
SORTER
CALL FOR SERVICE
32 DISK ERROR
33 DISK ERROR
SRAM ERROR
CALL SERVICE
OPERATION CHECK
PAGES: ####
PANEL CHECK
PANEL CHECK
DONE
A - 20
Meaning
Action
Malfunction of swing-guide
Unknown Stacker Error.
Malfunction of paper full sensor
Malfunction of UPPER tray
Refer to Chapter 4 (troubleshooting) of the 2,000 sheet deck or
Malfunction of 2,000 sheet deck or 2x500 2x500 sheet deck service manual.
sheet deck delivery motor
Malfunction of 2,000 sheet deck or 2x500
sheet deck lifter
Malfunction of face-down deflector solenoid 1 Refer to Chapter 4 (troubleshooting) of the soter service manual.
Malfunction of face-down deflector solenoid 2
Hard drive failure - Write error Hard drive failure - Read failure The AIR Chip has failed.
This is the control panel diagnostic mode.
Replace the hard disk.
Replace the hard disk.
Replace the video controller PCB.
Factory Usage Only. See section
on diagnostics.
Displays under TEST when SHOW PAGE No action required.
COUNT is selected. #### is number of pages.
Displays during a panel check function
Proceed with the panel check
function.
Displays when panel check function is com- Power cycle printer
plete
Prepared by
PERIPHERAL PRODUCTS QUALITY ADVANCEMENT DIV.
PERIPHERAL PRODUCTS TECHNICAL DOCUMENTATION DEPT.
CANON INC
Printed in Japan
REVISION 0 ( JAN. 1999 )
5-1, Hakusan 7–chome, Toride-City, Ibaraki-Pref. 302-8501, Japan
The printing paper contains
70% waste paper.
PRINTED IN JAPAN (IMPRIME AU JAPON)
0199AT0.70
CANON INC.