FS-C5350DN
SERVICE
MANUAL
Published in December 2009
842K8111
2K8SM061
Rev.1
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF
USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
It may be illegal to dispose of this battery into the municipal waste stream. Check with your local
solid waste officials for details in your area for proper disposal.
ATTENTION
IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE
TYPE INCORRECT. METTRE AU REBUT LES BATTERIES UTILISEES SELON LES INSTRUCTIONS DONNEES.
Il peut être illégal de jeter les batteries dans des eaux d’égout municipales. Vérifiez avec les fonctionnaires municipaux de votre région pour les détails concernant des déchets solides et une mise
au rebut appropriée.
Revision history
Revision
Date
1
December 11, 2009
Replaced pages
1-4-19, 1-4-20, 1-5-2
Remarks
-
This page is intentionally left blank.
Safety precautions
This booklet provides safety warnings and precautions for our service personnel to ensure the safety of
their customers, their machines as well as themselves during maintenance activities. Service personnel
are advised to read this booklet carefully to familiarize themselves with the warnings and precautions
described here before engaging in maintenance activities.
Safety warnings and precautions
Various symbols are used to protect our service personnel and customers from physical danger and
to prevent damage to their property. These symbols are described below:
DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect
compliance with warning messages using this symbol.
WARNING: Serious bodily injury or death may result from insufficient attention to or incorrect compliance
with warning messages using this symbol.
CAUTION: Bodily injury or damage to property may result from insufficient attention to or incorrect
compliance with warning messages using this symbol.
Symbols
The triangle ( ) symbol indicates a warning including danger and caution. The specific point
of attention is shown inside the symbol.
General warning.
Warning of risk of electric shock.
Warning of high temperature.
indicates a prohibited action. The specific prohibition is shown inside the symbol.
General prohibited action.
Disassembly prohibited.
indicates that action is required. The specific action required is shown inside the symbol.
General action required.
Remove the power plug from the wall outlet.
Always ground the copier.
1.Installation Precautions
WARNING
• Do not use a power supply with a voltage other than that specified. Avoid multiple connections to
one outlet: they may cause fire or electric shock. When using an extension cable, always check
that it is adequate for the rated current. .............................................................................................
• Connect the ground wire to a suitable grounding point. Not grounding the copier may cause fire or
electric shock. Connecting the earth wire to an object not approved for the purpose may cause
explosion or electric shock. Never connect the ground cable to any of the following: gas pipes,
lightning rods, ground cables for telephone lines and water pipes or faucets not approved by the
proper authorities. ............................................................................................................................
CAUTION:
• Do not place the copier on an infirm or angled surface: the copier may tip over, causing injury. .......
• Do not install the copier in a humid or dusty place. This may cause fire or electric shock. ................
• Do not install the copier near a radiator, heater, other heat source or near flammable material.
This may cause fire. .........................................................................................................................
• Allow sufficient space around the copier to allow the ventilation grills to keep the machine as cool
as possible. Insufficient ventilation may cause heat buildup and poor copying performance. ...........
• Always handle the machine by the correct locations when moving it. ...............................................
• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may cause
the copier to move unexpectedly or topple, leading to injury. ...........................................................
• Avoid inhaling toner or developer excessively. Protect the eyes. If toner or developer is accidentally ingested, drink a lot of water to dilute it in the stomach and obtain medical attention immediately. If it gets into the eyes, rinse immediately with copious amounts of water and obtain medical
attention. ......................................................................................................................................
• Advice customers that they must always follow the safety warnings and precautions in the copier’s
instruction handbook. .....................................................................................................................
2.Precautions for Maintenance
WARNING
• Always remove the power plug from the wall outlet before starting machine disassembly. ...............
• Always follow the procedures for maintenance described in the service manual and other related
brochures. .......................................................................................................................................
• Under no circumstances attempt to bypass or disable safety features including safety mechanisms
and protective circuits. .....................................................................................................................
• Always use parts having the correct specifications. ..........................................................................
• Always use the thermostat or thermal fuse specified in the service manual or other related brochure when replacing them. Using a piece of wire, for example, could lead to fire or other serious
accident. ..........................................................................................................................................
• When the service manual or other serious brochure specifies a distance or gap for installation of a
part, always use the correct scale and measure carefully. ................................................................
• Always check that the copier is correctly connected to an outlet with a ground connection. .............
• Check that the power cable covering is free of damage. Check that the power plug is dust-free. If it
is dirty, clean it to remove the risk of fire or electric shock. ..............................................................
• Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may
damage eyesight. ...........................................................................................................................
• Handle the charger sections with care. They are charged to high potentials and may cause electric
shock if handled improperly. ............................................................................................................
CAUTION
• Wear safe clothing. If wearing loose clothing or accessories such as ties, make sure they are
safely secured so they will not be caught in rotating sections. ..........................................................
• Use utmost caution when working on a powered machine. Keep away from chains and belts. ........
• Handle the fixing section with care to avoid burns as it can be extremely hot. ..................................
• Check that the fixing unit thermistor, heat and press rollers are clean. Dirt on them can cause
abnormally high temperatures. ........................................................................................................
• Do not remove the ozone filter, if any, from the copier except for routine replacement. ....................
• Do not pull on the AC power cord or connector wires on high-voltage components when removing
them; always hold the plug itself. .....................................................................................................
• Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a
cable cover or other appropriate item. .............................................................................................
• Treat the ends of the wire carefully when installing a new charger wire to avoid electric leaks. ........
• Remove toner completely from electronic components. ...................................................................
• Run wire harnesses carefully so that wires will not be trapped or damaged. ....................................
• After maintenance, always check that all the parts, screws, connectors and wires that were
removed, have been refitted correctly. Special attention should be paid to any forgotten connector,
trapped wire and missing screws. ...................................................................................................
• Check that all the caution labels that should be present on the machine according to the instruction
handbook are clean and not peeling. Replace with new ones if necessary. ......................................
• Handle greases and solvents with care by following the instructions below: .....................................
· Use only a small amount of solvent at a time, being careful not to spill. Wipe spills off completely.
· Ventilate the room well while using grease or solvents.
· Allow applied solvents to evaporate completely before refitting the covers or turning the power
switch on.
· Always wash hands afterwards.
• Never dispose of toner or toner bottles in fire. Toner may cause sparks when exposed directly to
fire in a furnace, etc. .......................................................................................................................
• Should smoke be seen coming from the copier, remove the power plug from the wall outlet immediately. ............................................................................................................................................
3.Miscellaneous
WARNING
• Never attempt to heat the drum or expose it to any organic solvents such as alcohol, other than the
specified refiner; it may generate toxic gas. .....................................................................................
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2K8
CONTENTS
1-1 Specifications
1-1-1 Specifications..........................................................................................................................................1-1-1
1-1-2 Parts names............................................................................................................................................1-1-3
(1) Overall ...............................................................................................................................................1-1-3
(2) Operation panel.................................................................................................................................1-1-4
1-1-3 Machine cross section ............................................................................................................................1-1-5
1-2 Installation
1-2-1 Installation environment ..........................................................................................................................1-2-1
1-2-2 Unpacking ...............................................................................................................................................1-2-2
(1) Unpacking .........................................................................................................................................1-2-2
(2) Removing the tape ............................................................................................................................1-2-4
1-2-3 Installing the expansion memory module (option) ..................................................................................1-2-5
1-2-4 Installing the memory card (option).........................................................................................................1-2-6
1-2-5 Installing the hard disk (option) ...............................................................................................................1-2-7
1-3 Maintenance Mode
1-3-1 Maintenance mode .................................................................................................................................1-3-1
(1) Executing a maintenance item ..........................................................................................................1-3-1
(2) Service mode ....................................................................................................................................1-3-2
(3) Printing a event log (EVENT LOG)..................................................................................................1-3-13
1-4 Troubleshooting
1-4-1 Paper misfeed detection .........................................................................................................................1-4-1
(1) Paper misfeed indication ...................................................................................................................1-4-1
(2) Paper misfeed detection condition ....................................................................................................1-4-1
1-4-2 Self-diagnostic function...........................................................................................................................1-4-2
(1) Self-diagnostic function .....................................................................................................................1-4-2
(2) Self diagnostic codes ........................................................................................................................1-4-3
1-4-3 Image formation problems ....................................................................................................................1-4-21
(1) No image appears (entirely white)...................................................................................................1-4-22
(2) No image appears (entirely black)...................................................................................................1-4-23
(3) A specific color is printed solid. .......................................................................................................1-4-23
(4) The back side gets dirty. .................................................................................................................1-4-23
(5) Image is too light. ............................................................................................................................1-4-24
(6) The background is colored. .............................................................................................................1-4-24
(7) White streaks are printed vertically. ................................................................................................1-4-25
(8) Black streaks are printed vertically..................................................................................................1-4-25
(9) Streaks are printed horizontally.......................................................................................................1-4-25
(10) Spots are printed. ............................................................................................................................1-4-25
(11) The leading edge of image begins to print too early or too late. .....................................................1-4-26
(12) Paper is wrinkled. ............................................................................................................................1-4-26
(13) Offset occurs. ..................................................................................................................................1-4-26
(14) Part of image is missing. .................................................................................................................1-4-26
(15) Fusing is loose. ...............................................................................................................................1-4-27
(16) Colors are printed offset to each other. ...........................................................................................1-4-27
1-4-4 Electric problems ..................................................................................................................................1-4-28
1-4-5 Mechanical problems ............................................................................................................................1-4-31
1-5 Assembly and Disassembly
1-5-1 Precautions for assembly and disassembly............................................................................................1-5-1
(1) Precautions .......................................................................................................................................1-5-1
(2) Drum..................................................................................................................................................1-5-1
(3) Toner container .................................................................................................................................1-5-1
(4) How to tell a genuine Kyocera Mita toner container..........................................................................1-5-2
1-5-2 Outer covers ...........................................................................................................................................1-5-3
(1) Detaching and refitting the left rear cover, left upper cover and left front cover................................1-5-3
(2) Detaching and refitting the right rear cover, right upper cover and right front cover .........................1-5-6
2K8
1-5-3 Paper feed section ..................................................................................................................................1-5-8
(1) Detaching and refitting the paper feed roller assembly (paper feed roller and pickup roller) ............1-5-8
(2) Detaching and refitting the retard roller ...........................................................................................1-5-10
(3) Detaching and refitting the MP paper feed roller.............................................................................1-5-11
1-5-4 Developing section................................................................................................................................1-5-12
(1) Detaching and refitting the developing unit .....................................................................................1-5-12
1-5-5 Drum section.........................................................................................................................................1-5-14
(1) Detaching and refitting the drum unit ..............................................................................................1-5-14
(2) Detaching and refitting the main charger unit..................................................................................1-5-15
1-5-6 Transfer/separation section ..................................................................................................................1-5-16
(1) Detaching and refitting the intermediate transfer unit......................................................................1-5-16
(2) Detaching and refitting the transfer roller unit .................................................................................1-5-19
(3) Detaching and refitting the duplex unit B.........................................................................................1-5-20
1-5-7 Fuser section ........................................................................................................................................1-5-25
(1) Detaching and refitting the fuser unit...............................................................................................1-5-25
1-5-8 PWBs ....................................................................................................................................................1-5-26
(1) Detaching and refitting the power source PWB...............................................................................1-5-26
(2) Detaching and refitting the main PWB ............................................................................................1-5-28
(3) Detaching and refitting the engine PWB .........................................................................................1-5-29
(4) Detaching and refitting the high voltage PWB.................................................................................1-5-34
1-5-9 Others ...................................................................................................................................................1-5-37
(1) Detaching and refitting the laser scanner unit .................................................................................1-5-37
(2) Detaching and refitting the ozone filter............................................................................................1-5-39
(3) Direction of installing the principal fan motors.................................................................................1-5-40
1-6 Firmware
1-6-1 Downloading firmware ............................................................................................................................1-6-1
(1) Firmware file......................................................................................................................................1-6-1
(2) Downloading the firmware from the USB memory ............................................................................1-6-2
(3) Downloading the firmware from the memory card.............................................................................1-6-4
2-1 Mechanical Construction
2-1-1 Paper feed/conveying section.................................................................................................................2-1-1
(1) Cassette paper feed section..............................................................................................................2-1-1
(2) MP tray paper feed section ...............................................................................................................2-1-3
(3) Paper conveying section ...................................................................................................................2-1-4
2-1-2 Drum section...........................................................................................................................................2-1-6
(1) Drum section .....................................................................................................................................2-1-6
(2) Main charger unit...............................................................................................................................2-1-8
2-1-3 Expose section......................................................................................................................................2-1-10
(1) Laser scanner unit...........................................................................................................................2-1-10
2-1-4 Developing section................................................................................................................................2-1-13
2-1-5 Transfer/separation section ..................................................................................................................2-1-15
2-1-6 Fuser section ........................................................................................................................................2-1-17
2-1-7 Paper exit/feed shift section..................................................................................................................2-1-19
2-1-8 Duplex/conveying section .....................................................................................................................2-1-21
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout..............................................................................................................................2-2-1
(1) PWBs ................................................................................................................................................2-2-1
(2) Switches and sensors .......................................................................................................................2-2-4
(3) Motors ...............................................................................................................................................2-2-6
(4) Other electrical components..............................................................................................................2-2-8
2-3 Operation of the PWBs
2-3-1
2-3-2
2-3-3
2-3-4
Power source PWB.................................................................................................................................2-3-1
Engine PWB............................................................................................................................................2-3-2
Drum relay PWB ...................................................................................................................................2-3-11
Paper exit PWB.....................................................................................................................................2-3-14
2K8
2-4 Appendixes
2-4-1 Appendixes .............................................................................................................................................2-4-1
(1) Wiring diagram ..................................................................................................................................2-4-1
(2) Repetitive defects gauge...................................................................................................................2-4-3
(3) Maintenance parts list .......................................................................................................................2-4-4
2K8
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2K8
1-1 Specifications
1-1-1
Specifications
Type ................................................ Desktop
Printing method............................... Electrophotographic four color (CMYK) printing using tandem (4) drum system
Paper weight................................... Cassette: 60 to 120 g/m2
MP tray: 60 to 220 g/m2
Paper types*1 .................................. Cassette:
Plain, preprinted, bond, recycled, rough, letterhead, color, prepunched, high quality,
and custom
MP tray:
Plain, transparency, preprinted, labels, bond, recycled, vellum, rough, letterhead,
color, prepunched, envelope, cardstock, coated, thick, high quality, and custom
Paper sizes ..................................... Cassette:
A4, B5, A5, Folio, 8 1/2" × 14" (Legal), 8 1/2" × 11" (Letter), Oficio II, Statement,
Executive, ISO B5, A6, Envelope C5, 16K, and Custom
MP tray:
A4, B5, A5, Folio, 8 1/2" × 14" (Legal), 8 1/2" × 11" (Letter), Oficio II, Statement,
Executive, A6, B6, ISO B5, Env. Monarch, Envelope #10, Envelope #9,
Envelope #6, Envelope DL, Envelope C5, 16K, Hagaki, Oufuku Hagaki, Youkei 2,
Youkei 4, and Custom
Printing speeds ............................... Cassette:
A4: 30 ppm
B5, A5, A6: 27 ppm (After 16 pages the printing speed becomes 14 ppm)
Letter: 32 ppm
Legal: 26 ppm
MP tray:
A4: 27 ppm
B5, A5, A6: 27 ppm (After 16 pages the printing speed becomes 14 ppm)
Letter: 28 ppm
Legal: 23 ppm
Duplex printing speed ..................... A4: 30 ppm
B5, A5: 27 ppm (After 16 pages the printing speed becomes 14 ppm)
Letter: 32 ppm
Legal: 13 ppm
First print out time ........................... EcoPower OFF
B/W: 8.5 seconds or less
Color: 10.0 seconds or less
EcoPower ON
B/W: 38.5 seconds or less
Color: 40.0 seconds or less
Warm-up time (23°C, 60%RH) ....... Power on: 36 seconds or less
Sleep (within 3 hours): 30 seconds or less
Paper feed source capacity ............ Cassette: 500 sheets (80 g/m2)
MP tray: 150 sheets (80 g/m2)
Output tray capacity ........................ Top tray: 250 sheets (80 g/m2)
Photoconductor............................... OPC drum (diameter 30 mm)
Printing method............................... Semiconductor laser (1 beam)
Charging system............................. Scorotoron plus charging
Developing system ......................... Dual component interactive touch down developing system
Toner replenishing: Automatic from the toner container
Transfer system .............................. Primary transfer: Elasticity intermediate transfer belt (DC bias)
Secondary transfer: Transfer roller (DC bias)
Separation system .......................... Small diameter separation, discharger brush
Fusing system................................. Heat fusing with a heat roller and a press roller
Charge erasing system................... Exposure by eraser lamp (LED)
Cleaning system ............................. Drum: Counter blade
Controller ........................................ PowerPC750CL-600 MHz
Memory........................................... Standard: 256 MB
Maximum: 1280 MB
1-1-1
2K8
Resolution....................................... 600 dpi
Operating systems.......................... Microsoft Windows 2000/XP/Vista, Windows Server 2003
Apple Macintosh OS X
Interface.......................................... USB: Hi-Speed USB
Network: 10 BASE-T/100 BASE-TX
KUIO-LV slot
Option: Hard disk
Memory card slot ............................ 1 (CompactFlash, 4 GB or less)
Margin............................................. 4 mm (left, right, top and bottom)
Operation environment ................... Temperature: 10 to 32.5°C/50 to 90.5°F
Relative humidity: 15 to 80%
Altitude 2,500 m (8,202 feet) maximum
Illumination 1,500 lux maximum
Dimensions (W × D × H) ................. 345 × 518 × 480 mm
13 5/8 × 20 2/5 × 18 9/10"
Weight............................................. Approx. 29.5 kg (65 lbs)
Power source.................................. 120 V, 60 Hz, max. 9.2 A (U.S.A./Canada)
220-240 V, 50 Hz/60 Hz, max. 4.7 A (European countries) Max.
Allowable voltage fluctuation: ±10% Max.
Allowable frequency fluctuation: ±2%
Power consumption ........................ 120 V AC model
Maximum 1,104 W or less
During printing: 517 W
During standby: 74 W
During sleep mode: 7 W
Power off: 0 W
220-240 V AC model
Maximum 1,107 W or less
During printing: 516 W
During standby: 74 W
During sleep mode: 8 W
Power off: 0 W
Operating noise*2 ............................ During printing: LpA = 55 dB (A)
During standby: LpA = 36 dB (A)
During sleep mode: Immeasurably low
*1: When using CUSTOM 1 (to 8), use the MP tray for paper sizes smaller than 105 × 148 mm (4 1/8 × 5 13/16").
The MP tray can be used with paper sizes over 70 × 138 mm (2 3/4 × 5 7/16").
*2: Sound pressure level at bystander position [front] in accordance with EN ISO 7779.
NOTE: These specifications are subject to change without notice.
1-1-2
2K8
1-1-2
Parts names
(1) Overall
11
12
13
14
16
10
10
6
17
10
10
15
2
9
8
1
3
4
24
5
7
21
18
22
23
20
19
Figure 1-1-1
1.
2.
3.
4.
5.
6.
7.
8.
Operation panel
Front cover
Top cover (Top tray)
Paper stopper
MP tray
Cassette
Power switch
Left cover
9.
10.
11.
12.
13.
14.
15.
16.
Waste toner box
Main charger units
Toner container M
Toner container C
Toner container Y
Toner container K
Duplex unit B
Fuser cover A
17.
18.
19.
20.
21.
22.
23.
24.
Envelope switch
USB memory slot
USB interface
AC inlet
Optional interface slot
Network indicators
Network interface
Right cover
1-1-3
2K8
(2) Operation panel
1
2 3 5
5
4
5
5
Figure 1-1-2
1.
2.
3.
4.
5.
6.
7.
8.
9.
1-1-4
Message display
Ready indicator
Data indicator
Attention indicator
Arrow keys
MENU key
OK key
GO key
CANCEL key
6
9
7
8
2K8
1-1-3
Machine cross section
14
18
8
4
15
19
9
5
20
16
10
6
21
17
11
7
25
24
22
23
3
2
Light path
Paper path
Paper path
(optional)
12
26
13
1
Figure 1-1-3
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
Cassette
MP tray
Duplex unit B
Drum unit M
Drum unit C
Drum unit Y
Drum unit K
Main charger unit M
Main charger unit C
Main charger unit Y
Main charger unit K
Laser scanner unit MC
Laser scanner unit YK
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
Developing unit M
Developing unit C
Developing unit Y
Developing unit K
Toner container M
Toner container C
Toner container Y
Toner container K
Intermediate transfer unit
Transfer roller unit
Fuser unit
Front cover
Controller box
1-1-5
2K8
This page is intentionally left blank.
1-1-6
2K8
1-2 Installation
1-2-1
1.
2.
3.
4.
5.
6.
Installation environment
Temperature: 10 to 32.5°C/50 to 90.5°F
Humidity: 15 to 80%RH
Power supply: 120 V AC, 220 - 240 V AC
Power source frequency: 50 Hz ±0.3%/60 Hz ±0.3%
Installation location
Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or
other strong light when removing paper jams.
Avoid locations subject to high temperature and high humidity or low temperature and low humidity; an abrupt
change in the environmental temperature; and cool or hot, direct air.
Avoid places subject to dust and vibrations.
Choose a surface capable of supporting the weight of the machine.
Place the machine on a level surface (maximum allowance inclination: 1°).
Avoid air-borne substances that may adversely affect the machine or degrade the photoconductor, such as mercury, acidic of alkaline vapors, inorganic gasses, NOx, SOx gases and chlorine-based organic solvents.
Select a well-ventilated location.
Allow sufficient access for proper operation and maintenance of the machine.
400 mm
15 3/4"
400 mm
15 3/4"
250 mm
9 13/16"
200 mm
7 7/8"
600 mm
23 5/8"
Figure 1-2-1
1-2-1
2K8
1-2-2
Unpacking
(1) Unpacking
220-240 V AC model
5
16
4
3
23
24
2
24
15
1
24
24
6
8
7
14
17
9
240 V AC model
20
18
19
10
13
22
21
230 V AC model
11
12
Figure 1-2-2 220-240 V AC model
1.
2.
3.
4.
5.
6.
7.
8.
9.
1-2-2
Printer
Toner container (Yellow)
Toner container (Black)
Toner container (Cyan)
Toner container (Magenta)
Waste toner box
Power cord
Main pad
Bottom pad
10.
11.
12.
13.
14.
15.
Bottom front/side pad
Outer case
Top pad
Top tray
Top spacer
Machine cover
600 × 600 × 900
16. Desiccating agent
17. Machine cover
650 × 650 × 1200
18. Plastic bag 240 × 350
19. Operation guide
20. Warranty card
21. Leaflet EEA information
22. 6 nations label
23. Installation guide
24. Plastic bags 200 × 700
2K8
120 V AC model
14
21
19
12
13
5
1
4
2
3
22
15
22
22
6
22
7
16
20
21
17
18
8
11
9
10
Figure 1-2-3 120 V AC model
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Printer
Toner container (Yellow)
Toner container (Black)
Toner container (Cyan)
Toner container (Magenta)
Waste toner box
Power cord
Document tray
Upper left cushion
Upper right cushion
Outer case
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
Machine cover 600 × 600 × 900
Cassette cushion
Desiccating agent
Main pad
Machine cover 650 × 650 × 1200
Bottom left cushion
Bottom right cushion
Toner pad US
Plastic bag 240 × 350
Operation guide
Plastic bags 200 × 700
1-2-3
2K8
(2) Removing the tape
<Procedure>
1. Remove the tape-A.
2. Remove two tapes-B and then remove the
installation guide and desiccating agent.
Tape-B
Installation guide
Tape-B
Desiccating agent
Tape-A
Figure 1-2-4
1-2-4
2K8
1-2-3
Installing the expansion memory module (option)
<Procedure>
1. Turn off printer power switch.
Caution:
Do not insert or remove expansion memory
modules while printer power is on.
Doing so may cause damage to the printer
and the expansion memory modules.
2. Remove the two screws and then remove
the main PWB.
Screw
Main PWB
Screw
Figure 1-2-5
3. Insert the expansion memory modules into
the expansion memory socket so that the
notches on the memory align with the corresponding protrusions in the slot.
4. Refit the main PWB.
5. Print a status page to check the memory
expansion (See page P.1-3-2).
If memory expansion has been properly performed, information on the installed memory
is printed with the total memory capacity has
been increased.
Standard memory capacity: 256 MB
Main PWB
1
Expansion
memory socket
Expansion
memory module
2
Figure 1-2-6
1-2-5
2K8
1-2-4
Installing the memory card (option)
<Procedure>
1. Turn off printer power switch.
Caution:
Do not insert or remove memory card while
printer power is on.
Doing so may cause damage to the printer
and the memory card.
2. Remove the two screws and then remove
the main PWB.
Screw
Main PWB
Screw
Figure 1-2-7
3. Insert the memory card into the memory
card slot. Push it in all the way.
4. Refit the main PWB.
Main PWB
Memory card socket
Memory card
Figure 1-2-8
1-2-6
2K8
1-2-5
Installing the hard disk (option)
<Procedure>
1. Turn off printer power switch.
Caution: Do not insert or remove hard disk
unit while printer power is on.
Doing so may cause damage to the printer
and the hard disk.
2. Remove two screws and then remove the
option interface slot cover.
3. Insert the hard disk into the option interface
slot. Push it in all the way.
4. Secure the hard disk by using two screws.
Option interface
slot cover
Screw
Screw
Option
interface
slot
Hard disk
Figure 1-2-9
1-2-7
2K8
This page is intentionally left blank.
1-2-8
2K8
1-3 Maintenance Mode
1-3-1
Maintenance mode
The printer is equipped with a maintenance function which can be used to maintain and service the machine.
(1) Executing a maintenance item
Message display
Ready
1. Press the MENU key.
Report Print
>
2. Press the up/down arrow key several times
until [Adjust/Maintenance >] is displayed.
Adjust/
Maintenance
>
>Restart
Printer
3. Press the right arrow key.
>Service
4. Press the up/down arrow key several times
until [>Service >] is displayed.
>
5. Press the right arrow key.
Service mode items
To scroll these items,
press the up/down
arrow key repeatedly.
>>Print
Status Page
To print a status page for service purpose.
>>Print Network
Status Page
To print a network status page.
>>Print
Test Page
To print a test page.
>>Write Data
To write data into a USB memory.
(See page 1-3-2)
(See page 1-3-8)
(See page 1-3-8)
(See page 1-3-9)
>>Maintenance
To reset the counter after replacing the maintenance kit.
(See page 1-3-9)
>>DEV-SET
To enter the initial value (6-digit data) after replacing
the developing unit.
(See page 1-3-10)
>>DEV-CLN
To perform developing unit refreshing.
(See page 1-3-11)
>>LSU/Charger
To perform LSU dust shield glass and main charger cleaning.
(See page 1-3-11)
>>Drum
To perform drum surface refreshing.
(See page 1-3-12)
1-3-1
2K8
(2) Service mode
Service items
Description
Printing a status page for service purpose
Description
Prints a status page for service purpose. The status page includes various printing settings
and service cumulative.
Purpose
To acquire the current printing environmental parameters and cumulative information.
Procedure
1. Enter the service mode [>>Print Status Page].
2. Press the OK key. [Print Status Page?] will be displayed.
3. Press the OK key. Two pages will be printed.
Completion
>>Print
Status Page
Service status page (1)
Service Status Page
Printer
�
�
Firmware Version 2K8_3000.000.040
2009.05.27
�
�
�
[XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX]
Controller Information
� Memory Status
Standard Size
Option Slot
Total Size
500.0 kB
500.0 kB
1000.0 kB
� Time
Local Time Zone
Time Server
+01:00 Amsterdam
10. 183. 53. 13
Installed Options
�
�
��
��
��
��
Paper Feeder2
Paper Feeder3
Paper Feeder4
Paper Feeder5
Memory Card
Hard Disk
Installed
Installed (Multi purpose)
Not Installed
Not Installed
Installed
Installed
e-MPS error control
Y6
0
Digital Dot Coverage
��
��
��
��
��
Average (%) / Usage Page (A4/Letter Conversion)
K: 1.00
/ 11111111. 00
C: 2.22
/ 2222222. 22
M: 3.33
/ 3333333. 33
Y: 4.44
/ 4444444. 44
Last Page K/C/M/Y (%) 1.00 / 2.22 / 3.33 / 4.44
FRPO Status
�� Default Pattern Switch
Default Font Name
B8
V3
00
Courier
�� [XXXXXXXXXXXXXXXX]
1
Figure 1-3-1
1-3-2
2K8
Service items
Description
Detail of service status page (1)
No.
Items
Description
�
Firmware version
-
�
Engine software version
-
�
Engine boot version
-
�
Main ROM version
-
�
Panel mask version
-
�
Used memory
-
�
Local time zone
-
�
Presence or absence of
the optional paper feeder
1
Installed: Paper feeder (Normal)
Installed (Multi purpose): Multi purpose feeder
Not Installed: Absence
�
Presence or absence of
the optional paper feeder
2
Installed: Paper feeder (Normal)
Installed (Multi purpose): Multi purpose feeder
Not Installed: Absence
��
Presence or absence of
the optional paper feeder
3
Installed: Paper feeder (Normal)
Installed (Multi purpose): Multi purpose feeder
Not Installed: Absence
��
(Presence or absence of
the paper feeder 4)
Installed: Paper feeder (Normal)
Installed (Multi purpose): Multi purpose feeder
Not Installed: Absence
��
Presence or absence of
the optional memory card
Installed: Presence
Not Installed: Absence
��
Presence or absence of
the optional hard disk unit
Installed: Presence
Not Installed: Absence
��
Black toner coverage
Number of pages printed converted in reference to A4 or Letter size.
��
Cyan toner coverage
Number of pages printed converted in reference to A4 or Letter size.
��
Magenta toner coverage
Number of pages printed converted in reference to A4 or Letter size.
��
Yellow toner coverage
Number of pages printed converted in reference to A4 or Letter size.
��
Coverage of the latest
print out
Black/Cyan/Magenta/Yellow
��
FRPO settings
-
��
Machine number
-
1-3-3
2K8
Service items
Description
Service status page (2)
Service Status Page
Printer
Firmware Version 2K8_3000.000.040
2009.05.27
[XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX]
Engine Information
�� NVRAM Version
�� MAC Address
��
��
��
��
��
��
��
��
��
��
��
��
��
��
��
��
��
��
��
��
XXXXXXXXXXX
00:00:00:00:00:00
1/2 �� ��
100/100
1/5
0/0/0/0/0/0/0
0/0/0/0/0/0/0
0/0/0/0/0/0/0/0/
0000000/0000000/0000000/0000000/0000000/0000000/0000000/0000000/
0000000/0000000/0000000/0000000/0000000/0000000/0000000/0000000/0000000/0000000/
F00/U00/0/0/0/0/30/30/70/70/00/00/ABCDE/ ������������������������ ��
0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/
0000/0000/0000/0000/0000/0000/0000/0000/0000/0000/
0203040508090A0B0C0D0F101112131415161718191A1B1C1D1E1F202122235E
0000/0100/0500/1000/0000/0100/0500/1000/0000/0100/0500/1000/0000/0100/0500/1000/
0000/0100/0500/1000/0000/0100/0500/1000/0000/0100/0500/1000/0000/0100/0500/1000/
00000000000000000000000000000000/
0000000000000000000000000000000000000000/0000000000/ �� ��
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
0000000000000000/0000000000000000/0000000000000000/0000000000000000/0000000000000000/
12345678/11223344/00001234abcd567800001234abcd5678/01234567890123456789012345678901/0008/00/07
12345678/11223344/00001234abcd567800001234abcd5678/01234567890123456789012345678901/0008/00/07
12345678/11223344/00001234abcd567800001234abcd5678/01234567890123456789012345678901/0008/00/07
12345678/11223344/00001234abcd567800001234abcd5678/01234567890123456789012345678901/0008/00/07
XXXXXXXX
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/FFFFFFFFFFFFFFFF/
[ABCDEFGHIJ][ABCDEFGHIJ][ABCDEFGHIJ][ABCDEFGHIJ]
[ABCDEFGHIJ][ABCDEFGHIJ][ABCDEFGHIJ][ABCDEFGHIJ][ABCDEFGHIJ] �� �� �� �� ��
0000/0000/0000/0000/ABCDEFGHIJ/ABCDEFGHIJ/ABCDEFGHIJ/ABCDEFGHIJ/ �� ��
[XXXXXXXXXXXXXXXX]
2
Figure 1-3-2
1-3-4
2K8
Service items
Description
Detail of service status page (2)
No.
��
Items
NVRAM version
Description
_ 1F3 1225 _ 1F3 1225
(a) (b) (c) (d) (e) (f)
a) Consistency of the present software version and the database
_ (underscore): OK
* (Asterisk): NG
(b) Database version
(c) The oldest time stamp of database version
(d) Consistency of the present software version and the ME firmware version
_ (underscore): OK
* (Asterisk): NG
(e) ME firmware version
(f) The oldest time stamp of the ME database version
Normal if (a) and (d) are underscored, and (b) and (e) are identical with (c)
and (f).
��
Mac address
-
��
Destination information
-
��
Area information
Code conversion
Margin settings
Top margin/Left margin
��
B
Low Power modeAsettings
0
1
Top offset for each paper
source
D
E
F
G
H
I
J
-C
2
3
4
5
6
7
8
9
MP tray/Paper feeder 1/Paper feeder 2/Paper feeder 3/ - /Duplex/
Page rotation
��
Left offset for each paper
source
MP tray/Paper feeder 1/Paper feeder 2/Paper feeder 3/ - /Duplex/
Page rotation
��
L value settings
Top margin (integer)/Top margin (decimal place)/Left margin (integer)/Left
margin (decimal place)/Paper length (integer)/Paper length (decimal place)/
Paper width (integer)/Paper width (decimal place)/
��
Life counter (The first line)
Machine/MP tray/Printer’s cassette/Paper feeder 1/Paper feeder 2/
Paper feeder 3/ - /Duplex printing
Life counter (The second
line)
Drum unit K/Drum unit C/Drum unit M/Drum unit Y/
Intermediate transfer unit/Developing unit K/Developing unit C/
Developing unit M/Developing unit Y/Maintenance kit
��
Operation panel lock status
0: Off
1: Partial lock
2: Full lock
��
USB information
0: Not connected
1: Full-Speed
2: Hi-Speed
��
Paper handling information
0: Paper source unit select
1: Paper source unit
��
Color printing double count
mode
0: All single counts
3: Folio, Single count, Less the 330 mm (length)
��
Black and white printing
double count mode
0: All single counts
3: Folio, Single count, Less the 330 mm (length)
��
��
1-3-5
2K8
Service items
No.
1-3-6
Description
Items
Description
��
Billing counting timing
-
��
Temperature (machine
inside)
-
��
Temperature (machine outside)
-
��
Relative temperature
(machine outside)
-
��
Absolute temperature
(machine outside)
-
��
LSU information
-
��
LSU2 information
-
��
Fixed asset number
-
��
Media type attributes
1 to 28 (Not used: 18, 19,
20)
Weight settings
0: Light
1: Normal 1
2: Normal 2
3: Normal 3
4: Heavy 1
5: Heavy 2
6: Heavy 3
7: Extra Heavy
Fuser settings
0: High
1: Middle
2: Low
3: Vellum
Duplex settings
0: Disable
1: Enable
��
SPD information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
Calibration information
-
��
RFID information
-
��
RFID reader/writer version
information
-
��
Engine parameter information
hexadecimal, 512 bytes
��
Optional paper feeder software version
[Paper feeder 1][Paper feeder 2][Paper feeder 3][Paper feeder 4]
2K8
Service items
No.
Description
Items
Description
��
Optional font version
-
��
Optional table version
-
��
Optional message version
-
��
WEB option version
-
��
Color table version
-
��
Drum unit ID
Black/Cyan/Magenta/Yellow/
��
Drum unit serial number
Black/Cyan/Magenta/Yellow/
NOTE:
Code conversion
A
B
C
D
E
F
G
H
I
J
0
1
2
3
4
5
6
7
8
9
1-3-7
2K8
Service items
>>Print Network
Status Page
Description
Printing a status page for network
Description
On the status page for network, detailed network setting information is printed.
Procedure
1. Enter the service mode [>>Print Network Status Page].
2. Press the OK key. [>>Print Network Status Page?] will be displayed.
3. Press the OK key. Three sheets of network status page will be printed.
Completion
>>Print
Test Page
Printing a test page
Description
Four colors are printed respectively with halftones of three different levels.
Purpose
To check the activation of the developer and drum units of four colors.
Procedure
1. Enter the service mode [>>Print Test Page].
2. Press the OK key. [>>Print Test Page?] will be displayed.
3. Press the OK key. A sheet of test page will be printed.
Completion
16/256
Density*
2
24/256
Black
32/256
Cyan
Magenta
1
Green*
(Yellow)
*1: Since focusing in yellow is hardly readable, yellow is mixed with cyan for more readability,
resulting in green.
2: Each portion of colors has three different magnitude of halftones (bands). If focus is
*
excessively lost, dots are not recognizable with the 16/256 band, resulting in uneven
density. It also results in vertical streaks in the 24/256 and/or 32/256 bands.
Figure 1-3-3 Test page
1-3-8
2K8
Service items
>>Write Data
>>Maintenance
Description
Write data (USB memory data write)
Description
To write data into a USB memory.
Procedure
Install the USB memory before attempting to write data.
1. Enter the service mode [>>Write Data].
2. Press the OK key. [>>Write Data?] will be displayed.
3. Press the OK key. [Data waiting] is displayed and the printer waits for data to be written.
4. When the data is sent, [Processing] appears and the data is written to USB memory.
When data writing ends, the display returns to [Ready].
Completion
Counter reset for the maintenance kit
Description
The "Install MK" message means that maintenance kit should be replaced at 200,000 pages
of printing. The interval counter must be manually reset using this service item.
Maintenance kit includes the following units:
Drum unit × 4
Developing unit M, C, Y and K
Fuser unit
Intermediate transfer unit
Paper feed roller assembly
Retard roller assembly
Ozone filter
Purpose
To reset the life counter for the drum units, developing units, intermediate transfer unit, and
fuser unit included in maintenance kit.
Procedure for replacing the maintenance kit
Drum unit × 4 (See page 1-5-14)
Developing unit M, C, Y and K (See page 1-5-12)
Fuser unit (See page 1-5-25)
Intermediate transfer unit (See page 1-5-16)
Paper feed roller assembly (See page 1-5-8)
Retard roller assembly (See page 1-5-10)
Ozone filter (See page 1-5-39)
Procedure
1. Enter the service mode [>>Maintenance].
2. Press the OK key. [>>Maintenance?] will be displayed.
3. Press the OK key twice. The counter for each component is reset immediately.
Completion
Note:
Occurrences of resetting the maintenance kits are recorded on the service status page in
number of pages at which the maintenance kit was replaced (See page 1-3-2).
This may be used to determine the possibility that the counter was errorneously or unintentionally reset.
1-3-9
2K8
Service items
>>DEV-SET
Description
Entering initial value (6-digit data) for replacing the developing unit
Description
After replacing the developing unit, enter the initial value (6-digit data) assigned on a label
attached to the package or developing unit.
Procedure
1. Enter the service mode [>>DEV-SET].
2. Press the OK key.
[>>DEV-SET 000000] will be displayed.
3. Enter the initial value (6-digit data) with cursor keys.
6-digit data is assigned on a label attached to the package or developing unit.
128F1E
Label
DV560Y
128F1EDV560M
Developing unit
Package
Message display
>>DEV-SET
000000
Arrow keys
Example
6-digit data: 128F1E
128F1E
Label
DV560Y
Notes
0: 21/23 ppm (250-sheet) model
21/23 ppm (250-sheet) model
1: 26/28 ppm (500-sheet) model
30/32 ppm (500-sheet) model*
*This machine
4.
0: Magenta
1: Cyan
2: Yellow
3: Black
Press the OK key.
[>>OK? 128F1E] will be displayed.
5. Press the OK key.
[DEV-SET] will be displayed. The initial value (6-digit data) is set.
Completion
1-3-10
2K8
Service items
>>DEV-CLN
Description
Developer refreshing
Description
The laser output of the image data for developer refreshing is carried out, and operation to
exposure, developing, and primary transfer is performed by 10 pages. (Paper is not fed)
Purpose
To perform cleaning when faulty images occur and a line appears longitudinally.
Procedure
1. Enter the service mode [>>DEV-CLN].
2. Press the OK key. [>>DEV-CLN?] will be displayed.
3. Press the OK key. Developer refreshing will be started.
Completion
A4 paper size
33 mm
200 mm
Toner image on the transfer belt
Figure 1-3-4Developer refreshing Image data
>>LSU/Charger
LSU dust shield glass and main charger cleaning
Description
The LSU cleaning motor drives the cleaning pad which in turn wipes clean the LSU dust
shield glass.
The main charger cleaning motor drives the cleaning pad which in turn wipes clean the main
charger wire and the main charger grid.
Purpose
To perform cleaning when the printed image is bad and stripes are seen in the vertical direction.
Procedure
1. Enter the service mode [>>LSU/Charger].
2. Press the OK key. [>>LSU/Charger?] will be displayed.
3. Press the OK key. LSU dust shield glass and main charger cleaning will be started.
Completion
1-3-11
2K8
Service items
>>Drum
1-3-12
Description
Drum surface refreshing
Description
Rotates the drum approximately 2 minutes with toner lightly on the overall drum using the
high-voltage output control of the engine PWB. The cleaning blade in the drum unit scrapes
toner off the drum surface to clean it.
Purpose
To clean the drum surface when image failure occurs due to the drum. This mode is effective
when dew condensation on the drum occurs.
Method
1. Enter the service mode [>>Drum].
2. Press the OK key. [>>Drum?] will be displayed.
3. Press the OK key. Drum surface refreshing will start and finish after approximately 2
minutes.
Completion
2K8
(3) Printing a event log (EVENT LOG)
Service items
Printing an event log
(EVENT LOG)
Description
Printing an event log (EVENT LOG)
Description
Prints a history list of occurrences of paper jam, self-diagnostics, toner replacements, etc.
Purpose
To allow machine malfunction analysis based on the frequency of paper misfeeds, self diagnostic errors and replacements.
Procedure
1. Connect the USB or network cable between printer and PC (network).
2. Connect the power cord.
USB interface
Network interface
USB cable
Network cable
Power cord
Figure 1-3-5
3. Turn printer power on. Make sure the printer is ready.
4. Send the following PRESCRIBE command sequence from the PC to the printer.
!R!KCFG"ELOG";EXIT;
A sheet of event log will be printed.
Completion
1-3-13
2K8
Service items
Description
Detail of event log
Event Log
Printer
Firmware Version 2K8_3000.000.000
2009.05.27
[XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX]
Paper Jam Log
#
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Count.
9999999
8888888
7777777
6666666
5555555
4444444
3333333
2222222
1111111
999999
888888
777777
666666
555555
444444
1
Service Call Log
Event Descriptions
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
10. 01. 88. 01. 01
#
8
7
6
5
4
3
2
1
(b)
(c)
(d)
Service Code
00. 0000
00. 0000
00. 0000
00. 0000
00. 0000
00. 0000
00. 0000
00. 0000
Maintenance Log
#
Count.
Item
Log Data Nothing...
Unknown Toner Log
10. 01. 88. 01. 01
(a)
Count.
1111111
999999
888888
777777
666666
555555
444444
1
#
5
4
3
2
1
(e)
Count.
1111111
999999
888888
777777
666666
Item
00. 00
00. 00
00. 00
00. 00
00. 00
Counter Log
(f)
J00:
0
J01:
1
J02: 11
J03: 222
J04:
1
J05:
1
J06:
1
J07:
1
J08:
1
J09:
1
J10:
1
J12: 999
J13:
J14:
J15:
J16:
J17:
J18:
J19:
J20:
J21:
J22:
J23:
J24:
1
1
1
1
1
1
1
1
1
1
1
1
J25:
J26:
J27:
J28:
J29:
J30:
J31:
J32:
J33:
J34:
J35:
J36:
1
1
1
1
1
1
1
1
1
1
1
1
(g)
C0000:
C0001:
C0002:
C0003:
C0004:
C0005:
C0006:
C0007:
C0008:
C0009:
C0010:
C0011:
0
1
2
3
4
5
6
7
8
9
10
11
C0012:
C0013:
C0014:
C0015:
C0016:
C0017:
C0018:
C0019:
C0020:
C0021:
C0022:
C0023:
12
13
14
15
16
17
18
19
20
21
22
23
(h)
T00: 10
T01: 20
T02: 30
T03: 40
T04: 50
T05: 999
[XXXXXXXXXXXXXXXX]
Figure 1-3-6
No.
1-3-14
Items
Description
�
Firmware version
Detail
�
Engine software version -
�
Engine boot version
-
�
Main ROM version
-
�
Panel mask version
-
�
Machine No.
-
-
2K8
Service items
No.
�
Description
Items
Paper
Jam
Log
Description
#
Count.
Event
Remembers 1 to 16 of occurrence.
If the occurrence of the previous
paper jam is less than 16, all of the
paper jams are logged. When the
occurrence excessed 16, the oldest occurrence is removed.
The total page
count at the time
of the paper
jam.
Log code (2 digit, hexadecimal, 5 categories)
(a) Cause of a paper jam
(b) Paper source
(c) Paper size
(d) Paper type
(e) Paper exit
(a) Cause of paper jam
10: Paper does not arrive at the registration sensor. [B] (MP tray)
10: Paper does not arrive at the registration sensor. [1] (Printer’s cassette)
10: Paper does not arrive at the registration sensor. [1] (Paper feeder 1)
10: Paper does not arrive at the registration sensor. [1] (Paper feeder 2)
10: Paper does not arrive at the registration sensor. [1] (Paper feeder 3)
10: Paper does not arrive at the registration sensor. [I] (Duplex conveying)
11: Paper does not pass the registration sensor. [H]
12: Paper remains at the registration sensor when power is turned on. [H]
20: Paper does not arrive at the paper exit sensor. [H]
21: Paper does not pass the paper exit sensor. [G]
22: Paper remains at the paper exit sensor when power is turned on. [G]
30: Paper does not arrive at the paper feeder 1’s PF paper feed sensor. [2] (Paper feeder 1)
30: Paper does not arrive at the paper feeder 1’s PF paper feed sensor. [3] (Paper feeder 2)
30: Paper does not arrive at the paper feeder 1’s PF paper feed sensor. [3] (Paper feeder 3)
31: Paper does not pass the paper feeder 1’s PF paper sensor. [2]
32: Paper remains at the paper feeder 1’s PF paper feed sensor when power is turned on. [2]
40: Paper does not arrive at the paper feeder 2’s PF paper feed sensor. [3] (Paper feeder 2)
40: Paper does not arrive at the paper feeder 2’s PF paper feed sensor. [4] (Paper feeder 3)
41: Paper does not pass the paper feeder 2’s PF paper sensor. [3]
42: Paper remains at the paper feeder 2’s PF paper feed sensor when power is turned on. [3]
50: Paper does not arrive at the paper feeder 3’s paper feed sensor. [4] (Paper feeder 3)
51: Paper does not pass the paper feeder 3’s paper sensor. [4]
52: Paper remains at the paper feeder 3’s PF paper feed sensor when power is turned on. [4]
A0: Paper does not arrive at the duplex sensor. [I]
A1: Paper does not pass the duplex sensor. [I]
A2: Paper remains at the duplex sensor when power is turned on. [I]
E0: Paper misfeed occurs due to forced stop when an error occurs during printing. (such as
opening of a cover)
F0: Paper does not arrive at the face down tray paper full sensor. [G]
F1 to FF: Paper misfeed by another cause.
Values (hexadecimal) within [ ] indicate paper misfeed locations.
1-3-15
2K8
Service items
No.
�
cont.
Description
Items
Paper Jam Log
Description
Jam location
Sensors
Paper jam location
Registration sensor
Paper exit sensor
Duplex conveying
sensor
Paper full sensor
PF paper feed sensor
MP tray
Cassette 1 (printer)
Paper feeder 1
Paper feeder 2
Paper feeder 3
Printer inside
Paper exit section
Duplex section
Figure 1-3-7
1-3-16
2K8
Service items
No.
�
cont.
Description
Items
Paper Jam Log
Description
(b) Detail of paper source (Hexadecimal)
00: MP tray
01: Paper cassette 1 (printer)
02: Paper cassette 2 (paper feeder 1)
03: Paper cassette 3 (paper feeder 2)
04: Paper cassette 4 (paper feeder 3)
05: -
06: 07: Duplex unit
08: Bulk paper feeder
09: Envelope feeder
(c) Detail of paper size (Hexadecimal)
01: Monarch
02: Business
03: International DL
04: International C5
05: Executive
06: Letter-R
86: Letter-E
07: Legal
08: A4R
88: A4E
09: B5R
89: B5E
0A: A3
0B: B4
0C: Ledger
0D: A5R
8D: A5E
0E: A6
0F: B6
10: Commercial #9
11: Commercial #6
12: ISO B5
13: Custom size
1E: C4
1F: Postcard
20: Reply-paid postcard
21: Oficio II
22: Special 1
23: Special 2
24: A3 wide
25: Ledger wide
26: Full bleed paper
(12 × 8)
27: 8K
28: 16K-R
A8: 16K-E
32: Statement-R
B2: Statement-E
33: Folio
34: Western type 2
35: Western type 4
(d) Detail of paper type (Hexadecimal)
01: Plain
02: Transparency
03: Preprint
04: Labels
05: Bond
06: Recycle
07: Vellum
08: Rough
09: Letter head
0A: Color
0B: Prepunched
0C: Envelope
0D: Cardstock
0E: Coated
0F: 2nd side
10: Media 16
11: High quality
15: Custom 1
16: Custom 2
17: Custom 3
18: Custom 4
19: Custom 5
1A: Custom 6
1B: Custom 7
1C: Custom 8
(e) Detail of paper exit location (Hexadecimal)
01: Face down tray (FD)
02: Face up tray (FU)
03 to 48: Reserved
�
Service Call
(Self diagnostic
error) Log
#
Count.
Service Code
Remembers 1 to 8 of
occurrence of self diagnostics error. If the
occurrence of the previous diagnostics error is
less than 8, all of the
diagnostics errors are
logged.
The total page count at
the time of the self diagnostics error.
Self diagnostic error code
(See page 1-4-3)
Example
01.6000
01 means a self-diagnostic error; 6000 means a
self diagnostic error code.
1-3-17
2K8
Service items
No.
�
Description
Items
Maintenance
Log
NOTE:
It is not logged if
100 or more
counts are not
added to the
count at the last
occurrence of
replacement.
Description
#
Count.
Item
Remembers 1 to 8 of
occurrence of replacement. If the occurrence of
the previous replacement
of toner container is less
than 8, all of the occurrences of replacement
are logged.
The total page count at the
time of the replacement of
the toner container.
Code of maintenance replacing
item (1 byte, 2 categories)
This is virtually logged as
the occurrence of the
“Toner Empty” or “Install
MK” condition since the
replacement of the toner
container is not precisely
detectable.
First byte (Replacing item)
01: Toner container
Second byte (Type of replacing
item)
00: Black
01: Cyan
02: Magenta
03: Yellow
First byte (Replacing item)
02: Maintenance kit
Second byte (Type of replacing
item)
01: Fixed (MK-580)
��
Unknown Toner
Log
NOTE:
It is not logged if
100 or more
counts are not
added to the
count at the last
error.
��
Counter Log
Comprised of
three log
counters including paper jams,
self diagnostics
errors, and
replacement of
the toner container.
NOTE:
It is not logged if
100 or more
counts are not
added to the
count at the last
error.
1-3-18
#
Count.
Item
Remembers 1 to 5 of
occurrence of unknown
toner detection.
The total page count at the
time of the “Toner Empty”
error with using an
unknown toner container.
Unknown toner log code (1
byte, 2 categories)
If the occurrence of the
previous unknown toner
detection is less than 5,
all of the unknown toner
detection are logged.
First byte
01: Fixed (Toner container)
Second byte
00: Black
00: Cyan
00: Magenta
00: Yellow
(f) Jam
(g) Self diagnostic error
(h) Maintenance item replacing
Indicates the log counter
of paper jams depending
on location.
Indicates the log counter of
self diagnostics errors
depending on cause.
(See page 1-4-3)
Indicates the log counter
depending on the maintenance
item for maintenance.
Refer to Paper Jam Log.
All instances including
those are not occurred
are displayed.
Example
C6000: 4
Self diagnostics error
6000 has happened four
times.
T: Toner container
00: Black
00: Cyan
00: Magenta
00: Yellow
M: Maintenance kit
00: (Fixed)
Example
T00: 1
The (black) toner container has
been replaced once.
This is virtually logged as the
occurrence of the” Toner Empty”
or “Install MK” condition.
2K8
1-4 Troubleshooting
1-4-1
Paper misfeed detection
(1) Paper misfeed indication
If the paper jammed in the paper transport system, or no paper sheets were fed at all, the “Paper jam” message appears
and the location of the paper jam (the component where the paper jam has occurred) is also indicated. The printer automatically goes off-line when this message is displayed. Remove jammed paper. After removing jammed paper, the printer
will re-start printing.
Paper jam message
Paper jam
Printer
Paper jam location
Figure 1-4-1
(2) Paper misfeed detection condition
Registration sensor
Paper full sensor
Paper exit sensor
PF paper feed sensor
Duplex conveying sensor
Figure 1-4-2
1-4-1
2K8
1-4-2
Self-diagnostic function
(1) Self-diagnostic function
This printer is equipped with self-diagnostic function. When a problem is detected, the printer stops printing and display an
error message on the operation panel. An error message consists of a message prompting a contact to service personnel,
total print count, and a four-digit error code indicating the type of the error. (The display varies depending on the type of
the error.)
Total number of pages
Error code
Call service
6000:012345
Error code
Call service
F000
Error code
Error.power off.
F030
Figure 1-4-3
1-4-2
2K8
(2) Self diagnostic codes
Code
Contents
Remarks
Causes
Check procedures/corrective measures
0100
Backup memory read/write error
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
0110
Backup memory data error
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
0120
MAC address data error
For data in which the MAC address is
invalid.
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
0150
Engine PWB (EEPROM) error
Data read from EEPROM is judged
abnormal.
Improper installation EEPROM.
Replace the engine PWB (See page 1-529).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
0170
Billing counting error
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
0420
Paper feeder communication error
Communication error between engine
PWB and optional paper feeder.
Improper installation paper feeder.
Follow installation instruction carefully again.
Defective harness
between PF main
PWB (YC3, YC5)
and paper feeder
interface connector, or improper
connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective harness
between engine
PWB (YC33) and
paper feeder interface connector, or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
0600
Expanded memory (DIMM) installing
error
The expansion memory modules (DIMM)
are not correctly mounted.
Improper installation expanded
memory (DIMM).
Check the installation of the expanded memory (DIMM) and remedy if necessary.
0610
Expanded memory (DIMM) error
The expansion memory modules (DIMM)
mounted on the main PWB does not
operate correctly.
Defective
expanded memory
(DIMM).
Replace the expanded memory (DIMM)
(See page 1-2-5).
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
1-4-3
2K8
Code
0640
0930
1010
1020
1030
1040
Contents
Hard disk error
Causes
Check procedures/corrective measures
Defective hard
disk.
Replace the hard disk (See page 1-2-7).
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
Defective RFID.
Replace the RFID.
Defective drum
PWB (EEPROM).
Replace the drum unit (See page 1-5-14).
Defective engine
PWB (EEPROM).
Replace the engine PWB (EEPROM) (See
page 1-5-29).
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Lift motor error
When the lift motor is driven, the lift
motor over-current detection signal is
detected continuously for 50 times (5 s)
at 100 ms intervals.
After the lift motor is driven, the ON status of lift limit sensor cannot be detected
for 8 seconds.
The cassette installed confirmation message is displayed on the printer operation panel, and even if the cassette is
opened and closed, the cassette
installed confirmation message is displayed 5 times successively.
Defective bottom
plate elevation
mechanism in the
cassette.
Check to see if the bottom plate can move
smoothly and repair it if any problem is
found.
Defective drive
transmission system of the lift
motor.
Check if the rollers and gears rotate
smoothly. If not, grease the bushings and
gears. Check for broken gears and replace if
any.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
PF lift motor error
(Option paper feeder)
When the PF lift motor is driven, the PF
lift motor over-current detection signal is
detected continuously for 50 times (5 s)
at 100 ms intervals.
After the PF lift motor is driven, the ON
status of PF lift limit sensor cannot be
detected for 8 seconds.
The cassette installed confirmation message is displayed on the printer operation panel, and even if the cassette is
opened and closed, the cassette
installed confirmation message is displayed 5 times successively.
Defective harness
between PF lift
motor and PF main
PWB (YC7), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Defective bottom
plate elevation
mechanism in the
cassette.
Check to see if the bottom plate can move
smoothly and repair it if any problem is
found.(Refer to the service manual for the
paper feeder).
Defective drive
transmission
system of the PF
lift motor.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.(Refer to the
service manual for the paper feeder).
Defective PF lift
motor.
Replace the PF lift motor. (Refer to the service manual for the paper feeder).
Defective PF lift
limit sensor.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective PF cassette size switch.
Replace the PF cassette size switch.(Refer
to the service manual for the paper feeder).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
I2C bus error
1020: Paper feeder 1
1030: Paper feeder 2
1040: Paper feeder 3
1-4-4
Remarks
Defective lift motor. Replace the lift motor.
2K8
Code
1500
1520
1540
Contents
PF warm air heater (upper blower)
high temperature error*
(Option paper feeder)
A temperature higher than 85°C/185°F
is detected.
*
: Multi purpose feeder only
1500: Paper feeder 1
1520: Paper feeder 2
1540: Paper feeder 3
1510
1530
1550
PF warm air heater (side blower) high
temperature error*
(Option paper feeder)
A temperature higher than 85°C/185°F
is detected.
*:
Multi purpose feeder only
1510: Paper feeder 1
1530: Paper feeder 2
1550: Paper feeder 3
Remarks
Causes
Check procedures/corrective measures
The inlet of upper
blower assembly is
blocked by paper
pieces or the like.
Check visually and remove it, if any (Refer
to the service manual for the paper feeder).
Defective harness
between PF warm
air fan motor 2 and
PF main PWB
(YC11), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Shorted PF thermistor 2.
Replace the PF thermistor 2 (Refer to the
service manual for the paper feeder).
Defective PF warm
air fan motor 2.
Replace the PF warm air fan motor 2 (Refer
to the service manual for the paper feeder).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
The inlet of side
blower assembly is
blocked by paper
pieces or the like.
Check visually and remove it, if any (Refer
to the service manual for the paper feeder).
Defective harness
between PF warm
air fan motor 1 and
PF main PWB
(YC11), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Shorted PF thermistor 1.
Replace the PF thermistor 1. (Refer to the
service manual for the paper feeder).
Defective PF warm
air fan motor 1.
Replace the PF warm air fan motor 1 (Refer
to the service manual for the paper feeder).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-5
2K8
Code
Contents
1600
1620
1640
PF warm air heater (upper blower) low
temperature error*
(Option paper feeder)
An external temperature higher than
+5°C/+41°F is not detected when one
minute elapses after PF warm air heater
2 is turned on.
*
: Multi purpose feeder only
1600: Paper feeder 1
1620: Paper feeder 2
1640: Paper feeder 3
1-4-6
Remarks
Causes
Check procedures/corrective measures
Defective harness
between PF warm
air heater 2 and PF
warm air heater
driver PWB (YC2),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Defective harness
between PF warm
air heater driver
PWB (YC3) and
PF main PWB
(YC13), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Defective harness
between PF thermistor 2 and PF
main PWB (YC12),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
PF thermistor 2
installed incorrectly.
Check the installation of the PF thermistor 2
and remedy if necessary (Refer to the service manual for the paper feeder).
Defective PF thermistor 2.
Replace the PF thermistor 2 (Refer to the
service manual for the paper feeder).
PF thermal cutout
2 triggered.
Replace the PF thermal cutout 2 (Refer to
the service manual for the paper feeder).
Broken PF warm
air heater 2.
Replace the PF warm air heater 2 (Refer to
the service manual for the paper feeder).
Defective PF warm
air heater driver
PWB.
Replace the PF warm air driver PWB (Refer
to the service manual for the paper feeder).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8
Code
1610
1630
1650
Contents
PF warm air heater (side blower)
error*
(Option paper feeder)
An external temperature higher than
+5°C/+41°F is not detected when one
minute elapses after PF warm air heater
2 is turned on.
*
: Multi purpose feeder only
1610: Paper feeder 1
1630: Paper feeder 2
1650: Paper feeder 3
Remarks
Causes
Check procedures/corrective measures
Defective harness
between PF warm
air heater 1 and PF
warm air heater
driver PWB (YC1),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Defective harness
between PF warm
air heater driver
PWB (YC3) and
PF main PWB
(YC13), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.(Refer to the
service manual for the paper feeder).
Defective harness
between PF thermistor 2 and PF
main PWB (YC12),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
PF thermistor 1
installed incorrectly.
Check the installation of the PF thermistor 1
and remedy if necessary (Refer to the service manual for the paper feeder).
Defective PF thermistor 1.
Replace the PF thermistor 1 (Refer to the
service manual for the paper feeder).
PF thermostat 1
triggered.
Replace the PF thermostat 1 (Refer to the
service manual for the paper feeder).
Broken PF warm
air heater 1.
Replace the PF warm air heater 1 (Refer to
the service manual for the paper feeder).
Defective PF warm
air heater driver
PWB.
Replace the PF warm air driver PWB (Refer
to the service manual for the paper feeder).
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-7
2K8
Code
2102
2250
2500
1-4-8
Contents
Developing motor MCY error
The ready signal cannot be detected
within 5 seconds after the developing
motor MCY turns on.
Main charger cleaning motor error
When the main charger cleaning motor
is driven, the main charger cleaning
motor over-current detection signal is
detected continuously for 50 times (5 s)
at 100 ms intervals.
Paper feed motor error
The paper feed motor ready input is not
given for 5 seconds during the main
motor is ON.
Remarks
Causes
Check procedures/corrective measures
Defective harness
between developing motor MCY and
engine PWB
(YC27), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission
system of the
developing motor
MCY.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.
Defective developing motor MCY.
Replace the developing motor MCY.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between main
charger cleaning
motor and engine
PWB (YC36), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission system of the main
charger cleaning
motor.
Check if the rollers and gears rotate
smoothly. If not, grease the bushings and
gears. Check for broken gears and replace if
any.
Defective main
charger cleaning
motor.
Replace the main charger cleaning motor.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between paper
feed motor and
engine PWB
(YC3), or improper
connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission system of the paper
feed motor.
Check if the rollers and gears rotate
smoothly. If not, grease the bushings and
gears. Check for broken gears and replace if
any.
Defective paper
feed motor.
Replace the paper feed motor.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8
Code
Contents
2610
2620
2630
PF paper feed motor error
(Option paper feeder)
The PF paper feed motor of paper feeder
1 ready input is not given for 2 seconds
during the PF paper feed motor is ON.
2610: Paper feeder 1
2620: Paper feeder 2
2630: Paper feeder 3
2830
4001
Developing motor K error
The ready signal cannot be detected
within 5 seconds after the developing
motor K turns on.
Polygon motor YK error
The polygon motor YK ready input is not
given for 10 seconds during the polygon
motor YK is ON.
Remarks
Causes
Check procedures/corrective measures
Defective harness
between PF paper
feed motor and PF
main PWB (YC6),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness. (Refer to the
service manual for the paper feeder).
Defective PF paper
feed motor drive
transmission
system.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any. (Refer to
the service manual for the paper feeder).
Defective PF main
motor.
Replace the PF main motor.
Defective PF main
PWB.
Replace the PF main PWB (Refer to the service manual for the paper feeder).
Defective printer’s
engine PWB.
Replace the printer’s engine PWB (Refer to
the service manual for the printer).
Defective harness
between developing motor K and
engine PWB
(YC26), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness (Refer to the
service manual for the paper feeder).
Defective drive
transmission
system of the
developing motor
K.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.
Improper installation intermediate
transfer unit.
Check the installation of the intermediate
transfer unit and reinstall them if necessary
(See page 1-5-16).
Defective developing motor K.
Replace the developing motor K.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between polygon
motor YK and
engine PWB
(YC29), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective laser
scanner unit YK.
Replace the laser scanner unit YK (See
page 1-5-37).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-9
2K8
Code
Contents
4002
Polygon motor MC error
The polygon motor MC ready input is not
given for 10 seconds during the polygon
motor MC is ON.
4201
4202
4203
1-4-10
Laser output error (Black)
The pin photo signal (PDN) is not output
from PD PWB K for one second while
laser is emitted.
Laser output error (Cyan)
The pin photo signal (PDN) is not output
from PD PWB C for one second while
laser is emitted.
Laser output error (Magenta)
The pin photo signal (PDN) is not output
from PD PWB M for one second while
laser is emitted.
Remarks
Causes
Check procedures/corrective measures
Defective harness
between polygon
motor MC and
engine PWB
(YC30), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective laser
scanner unit MC.
Replace the laser scanner unit MC (See
page 1-5-37).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between APC
PWB K and engine
PWB (YC29), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective APC
PWB K.
Replace the laser scanner unit YK (See
page 1-5-37).
Defective PD PWB
K.
Replace the laser scanner unit YK (See
page 1-5-37).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between APC
PWB C and engine
PWB (YC30), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective APC
PWB C.
Replace the laser scanner unit MC (See
page 1-5-37).
Defective PD PWB
C.
Replace the laser scanner unit MC (See
page 1-5-37).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between APC
PWB M and engine
PWB (YC30), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective APC
PWB M.
Replace the laser scanner unit MC (See
page 1-5-37).
Defective PD PWB
M.
Replace the laser scanner unit MC (See
page 1-5-37).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8
Code
Contents
4204
Laser output error (Yellow)
The pin photo signal (PDN) is not output
from PD PWB Y for one second while
laser is emitted.
4600
4700
LSU cleaning motor error
When the LSU cleaning motor is driven,
the LSU cleaning motor over-current
detection signal is detected continuously for 50 times (5 s) at 100 ms intervals.
VIDEO ASIC device error
Remarks
Causes
Check procedures/corrective measures
Defective harness
between APC
PWB Y and engine
PWB (YC29), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective APC
PWB Y.
Replace the laser scanner unit YK (See
page 1-5-37).
Defective PD PWB
Y.
Replace the laser scanner unit YK (See
page 1-5-37).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between LSU
cleaning motor and
engine PWB
(YC37), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission system of the LSU
cleaning motor.
Check if the rollers and gears rotate
smoothly. If not, grease the bushings and
gears. Check for broken gears and replace if
any.
Defective LSU
cleaning motor.
Replace the LSU cleaning motor.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Faulty connection
of the connector
between the main
PWB and engine
PWB.
Check the installation of the main PWB and
engine PWB and reinstall them if necessary
(See page 1-5-28 and 1-5-29).
Defective main
PWB.
Replace the main PWB (See page 1-5-28).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-11
2K8
Code
Contents
5301
Broken eraser lamp K wire
When the eraser lamp K is driven, the
eraser lamp K over-current detection signal is detected continuously for 10 times
(1 s) at 100 ms intervals.
5302
5303
1-4-12
Broken eraser lamp C wire
When the eraser lamp C is driven, the
eraser lamp C over-current detection signal is detected continuously for 10 times
(1 s) at 100 ms intervals.
Broken eraser lamp M wire
When the eraser lamp M is driven, the
eraser lamp M over-current detection
signal is detected continuously for 10
times (1 s) at 100 ms intervals.
Remarks
Causes
Check procedures/corrective measures
Defective harness
between drum unit
K and drum relay
PWB (YC2/YC3),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective eraser
lamp K.
Replace the drum unit K. (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between drum unit
C and drum relay
PWB (YC8/YC9),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective eraser
lamp C.
Replace the drum unit C (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between drum unit
M and drum relay
PWB (YC11/
YC12), or improper
connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective eraser
lamp M.
Replace the drum unit M (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8
Code
Contents
5304
Broken eraser lamp Y wire
When the eraser lamp Y is driven, the
eraser lamp Y over-current detection signal is detected continuously for 10 times
(1 s) at 100 ms intervals.
6000
Broken fuser heater lamp wire
The detected fuser thermistor temperature does not rise 1°C/1.8°F after the
fuser heater lamp has been turned on
continuously for 10 seconds in warming
up.
The fuser temperature does not reach
100°C/212°F after the fuser heater lamp
has been turned on continuously for 40
seconds in warming up.
The detected temperature of fuser thermistor does not reach the specified temperature (ready indication temperature)
after fuser heater lamp has been turned
on continuously for 90 seconds in warming up.
The detected temperature of fuser thermistor 2 does not rise 1°C/1.8°F after
fuser heater lamp has been turned on
continuously for 10 seconds during printing.
Remarks
Causes
Check procedures/corrective measures
Defective harness
between drum unit
Y and drum relay
PWB (YC5/YC6),
or improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective eraser
lamp Y.
Replace the drum unit Y (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness Reinsert the connector. Also check for contibetween fuser ther- nuity within the connector harness. If none,
mistor and paper
remedy or replace the harness.
exit PWB (YC4), or
improper connector insertion.
Defective harness
between paper exit
PWB (YC1) and
engine PWB
(YC20), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Fuser thermistor
installed incorrectly.
Replace the fuser unit (See page 1-5-25).
Fuser thermal cutout triggered.
Replace the fuser unit (See page 1-5-25).
Fuser heater lamp
installed incorrectly.
Replace the fuser unit (See page 1-5-25).
Broken fuser
heater lamp wire.
Replace the fuser unit (See page 1-5-25).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-13
2K8
Remarks
Code
Contents
6020
Abnormally high temperature fuser
heater lamp
The fuser thermistor detects a temperature higher than 240°C/464°F.
By the activation of the high temperature
error detection circuit (230°C/446°F or
more) of fuser thermistor, the illumination
of fuser heater lamp was forcibly turned
off and 10 seconds has elapsed.
Shorted fuser thermistor.
Replace the fuser unit (See page 1-5-25).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Broken fuser thermistor wire
Input from fuser thermistor is 3 or less
(A/D value) continuously for 1.1 second
(11 ms × 100 times).
Defective harness Reinsert the connector. Also check for contibetween fuser ther- nuity within the connector harness. If none,
mistor and paper
remedy or replace the harness.
exit PWB (YC4), or
improper connector insertion.
6030
6400
1-4-14
Zero cross signal error
The zero cross signal does not reach the
engine PWB for specified time.
Causes
Check procedures/corrective measures
Defective harness
between paper exit
PWB (YC1) and
engine PWB
(YC20), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Broken fuser thermistor wire.
Replace the fuser unit (See page 1-5-25).
Fuser thermistor
installed incorrectly.
Replace the fuser unit (See page 1-5-25).
Fuser thermal cutout triggered.
Replace the fuser unit (See page 1-5-25).
Fuser heater lamp
installed incorrectly.
Replace the fuser unit (See page 1-5-25).
Broken fuser
heater lamp wire.
Replace the fuser unit (See page 1-5-25).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between power
source PWB
(YC103) and
engine PWB
(YC19), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective power
source PWB.
Replace the power source PWB (See page
1-5-26).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8
Code
Contents
7001
Toner motor K error
When the toner motor K is driven, the
toner motor K over-current detection signal is detected continuously for 50 times
(5 s) at 100 ms intervals.
7002
7003
Toner motor C error
When the toner motor C is driven, the
toner motor C over-current detection signal is detected continuously for 50 times
(5 s) at 100 ms intervals.
Toner motor M error
When the toner motor M is driven, the
toner motor M over-current detection signal is detected continuously for 50 times
(5 s) at 100 ms intervals.
Remarks
Causes
Check procedures/corrective measures
Defective harness
between toner
motor K and
engine PWB
(YC22), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission
system of the toner
motor K.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.
Defective toner
motor K.
Replace the toner motor K.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between toner
motor C and
engine PWB
(YC24), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission
system of the toner
motor C.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.
Defective toner
motor C.
Replace the toner motor C.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Defective harness
between toner
motor M and
engine PWB
(YC25), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission
system of the toner
motor M.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.
Defective toner
motor M.
Replace the toner motor M.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-15
2K8
Code
Contents
7004
Toner motor Y error
When the toner motor Y is driven, the
toner motor Y over-current detection signal is detected continuously for 50 times
(5 s) at 100 ms intervals.
7401
7402
1-4-16
Remarks
Causes
Check procedures/corrective measures
Defective harness
between toner
motor Y and
engine PWB
(YC23), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective drive
transmission
system of the toner
motor Y.
Check if the gears rotate smoothly. If not,
grease the bushings and gears. Check for
broken gears and replace if any.
Defective toner
motor Y.
Replace the toner motor Y.
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Developing unit K non-installing error Faulty connection
No density detection signal is output
of the connector
from toner sensor K in developing unit K. between the developing PWB K and
drum relay PWB.
Check the installation of the developing unit
K and drum relay PWB and reinstall them if
necessary (See page 1-5-14).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective toner
sensor K.
Replace the developing unit K (See page 15-12).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Developing unit C non-installing error Faulty connection
No density detection signal is output
of the connector
from toner sensor C in developing unit C. between the developing PWB C and
drum relay PWB.
Check the installation of the developing unit
C and drum relay PWB and reinstall them if
necessary (See page 1-5-14).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective toner
sensor C.
Replace the developing unit C (See page 15-12).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8
Code
Contents
7403
Developing unit M non-installing error
No density detection signal is output
from toner sensor M in developing unit
M.
7404
7411
Developing unit Y non-installing error
No density detection signal is output
from toner sensor Y in developing unit Y.
Drum unit K non-installing error
The EEPROM of drum PWB K does not
communicate normally.
Remarks
Causes
Check procedures/corrective measures
Faulty connection
of the connector
between the developing PWB M and
drum relay PWB.
Check the installation of the developing unit
M and drum relay PWB and reinstall them if
necessary (See page 1-5-12).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective toner
sensor M.
Replace the developing unit M (See page 15-12).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Faulty connection
of the connector
between the developing PWB Y and
drum relay PWB.
Check the installation of the developing unit
Y and drum relay PWB and reinstall them if
necessary (See page 1-5-12).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Defective toner
sensor Y.
Replace the developing unit Y (See page 15-12).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Faulty connection
of the connector
between the drum
PWB K and drum
relay PWB.
Check the installation of the drum unit K and
drum relay PWB and reinstall them if necessary (See page 1-5-14).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Installation of
incompatible drum
unit K.
Install drum unit K compatible with the specifications to the printer.
Defective drum
PWB K.
Replace the drum unit Y (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
1-4-17
2K8
Code
Contents
7412
Drum unit C non-installing error
The EEPROM of drum PWB C does not
communicate normally.
Incompatible drum unit C is installed.
7413
1-4-18
Drum unit M non-installing error
The EEPROM of drum PWB M does not
communicate normally.
Incompatible drum unit M is installed.
Remarks
Causes
Check procedures/corrective measures
Faulty connection
of the connector
between the drum
PWB C and drum
relay PWB.
Check the installation of the drum unit C and
drum relay PWB and reinstall them if necessary (See page 1-5-14).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Installation of
incompatible drum
unit C.
Install drum unit C compatible with the specifications to the printer.
Defective drum
PWB C.
Replace the drum unit C (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
Faulty connection
of the connector
between the drum
PWB M and drum
relay PWB.
Check the installation of the drum unit M and
drum relay PWB and reinstall them if necessary (See page 1-5-14).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Installation of
incompatible drum
unit M.
Install drum unit M compatible with the specifications to the printer.
Defective drum
PWB M.
Replace the drum unit M (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
2K8-1
Code
Contents
7414
Drum unit Y non-installing error
The EEPROM of drum PWB Y does not
communicate normally.
Incompatible drum unit Y is installed.
Remarks
Causes
Check procedures/corrective measures
Faulty connection
of the connector
between the drum
PWB Y and drum
relay PWB.
Check the installation of the drum unit Y and
drum relay PWB and reinstall them if necessary (See page 1-5-14).
Defective harness
between drum
relay PWB (YC1)
and engine PWB
(YC34), or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none,
remedy or replace the harness.
Installation of
incompatible drum
unit Y.
Install drum unit Y compatible with the specifications to the printer.
Defective drum
PWB Y.
Replace the drum unit Y (See page 1-5-14).
Defective engine
PWB.
Replace the engine PWB (See page 1-529).
9530
Backup data error
The serial number of the machine written
on the EEPROM of the engine PWB differs with that is written on both the flash
memory of the engine PWB and the
EEPROM of the drum PWB as a backup.
Replacing both the
engine PWB and
the drum unit at the
same time.
Check that the machine operates properly
by reverting the engine controller and the
drum unit to the old ones. To replace the
engine PWB and the drum unit at the same
time, turn on the printer after replacing either
one. Check that the printer operates properly and then turn off the printer. Replace the
other and turn on the printer to check that
the printer operates properly. Be sure to
replace one by one.
F0
F000
Main PWB - Operation panel PWB
communication error
Defective main
PWB.
Turn the power switch off/on to restart the
printer. If the error is not resolved, replace
main PWB (See page 1-5-28).
Defective operation panel PWB.
Replace the operation panel PWB.
Defective main
PWB.
Turn the power switch off/on to restart the
printer.
F010
Main PWB checksum error
In recovery mode, download the controller
firmware using a CompactFlash card.
In recovery mode, only a CompactFlash
card is usable, not a USB memory.
Replace main PWB (See page 1-5-28).
F020
Main memory or expanded memory
checksum error
Defective main
memory (RAM) on
the main PWB.
Turn the power switch off/on to restart the
printer. If the error is not resolved, replace
main PWB (See page 1-5-28).
Defective expansion memory module.
Replace the expansion memory module
(See page 1-2-5).
1-4-19
2K8-1
Code
Contents
Remarks
Causes
Check procedures/corrective measures
F030
Main PWB general failure
Defective main
PWB.
Turn the power switch off/on to restart the
printer. If the error is not resolved, replace
main PWB (See page 1-5-28).
F040
Main PWB - Engine PWB communication error
Faulty connection
of the connector
between the main
PWB and engine
PWB.
Check the installation of the main PWB and
engine PWB and reinstall them if necessary
(See page 1-5-28 and 1-5-29).
Defective main
PWB.
Turn the power switch off/on to restart the
printer. If the error is not resolved, replace
main PWB (See page 1-5-28).
Defective engine
PWB.
Replace engine PWB (See page 1-5-29).
Some error may
have occurred
when downloading
the firmware of the
engine PWB.
Download the firmware of the engine PWB
again using the memory card (See page 16-4).
Defective engine
PWB.
Turn the power switch off/on to restart the
printer. If the error is not resolved, replace
engine PWB (See page 1-5-29).
Defective main
PWB.
Turn the power switch off/on to restart the
printer. If the error is not resolved, replace
main PWB (See page 1-5-28).
F050
F186
1-4-20
Engine PWB ROM checksum error
Main PWB video data control error
2K8
1-4-3
Image formation problems
(1)No image appears
(entirely white).
(2)No image appears
(entirely black).
See page 1-4-22
See page 1-4-23
(6)The background is
colored.
(7)White streaks are
printed vertically.
See page 1-4-24
See page 1-4-25
(11)The leading edge
of image begins to
print too early or too
late.
(12)Paper is wrinkled.
See page 1-4-26
See page 1-4-26
(3)A specific color is
printed solid.
See page 1-4-23
(8)Black streaks are
printed vertically.
See page 1-4-25
(13)Offset occurs.
See page 1-4-26
(4)The back side gets
dirty.
(5)Image is too light.
See page 1-4-23
See page 1-4-24
(9)Streaks are printed
horizontally.
(10)Spots are printed.
See page 1-4-25
See page 1-4-25
(14)Part of image is
missing.
(15)Fusing is loose.
See page 1-4-26
See page 1-4-27
(16)Colors are printed
offset to each other.
See page 1-4-27
1-4-21
2K8
(1) No image appears (entirely white).
Print example
Causes
No trans- Defective harness
fer
between high voltage
charging. PWB and engine PWB
(YC16), or improper connector insertion.
1-4-22
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
No laser
beam
output.
Defective laser scanner
unit.
Replace the laser scanner unit YK and laser scanner unit MC
(See page 1-5-37).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
No
developing bias
output.
Defective harness
between high voltage
PWB and engine PWB
(YC16), or improper connector insertion.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective driving system of developing unit.
Replace the developing unit (See page 1-5-12).
Image
synchronization
signal
failure.
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective harness
between engine PWB
(YC31) and main PWB
(YC6), or improper connector insertion.
2K8
(2) No image appears (entirely black).
Print example
Causes
No main Defective harness
charging. between high voltage
PWB and engine PWB
(YC16), or improper connector insertion.
The laser
is activated
simultaneously
for all
colors.
Check procedures/corrective measures
Reinsert the connector. Also check for continuity within the
connector harness. If none, remedy or replace the harness.
Defective main charger
unit.
Replace the drum unit (See page 1-5-14).
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective laser scanner
unit.
Replace the laser scanner unit YK and laser scanner unit MC
(See page 1-5-37).
(3) A specific color is printed solid.
Print example
Causes
Check procedures/corrective measures
Defective main charger unit which
corresponds to the color causing the
problem.
Check if the main charger unit is properly seated. If necessary,
reseat it properly.
Disconnected main charger wire.
Replace the main charger unit (See page 1-5-15).
Laser of laser scanner unit for solid
color printing is ON.
Defective laser scanner unit.
Replace the laser scanner unit YK and laser scanner unit MC
(See page, 1-5-37).
(4) The back side gets dirty.
Print example
Causes
Check procedures/corrective measures
Dirty secondary transfer roller.
Clean the secondary transfer roller.
Dirty paper conveying path.
Clean the paper conveying path.
Dirty heat roller and press roller.
Clean the heat roller and press roller.
1-4-23
2K8
(5) Image is too light.
Print example
Causes
Defective
developing bias
output.
Defective developing unit.
Replace the developing unit for the color that causes an error.
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine (See page 1-5-29).
Dirty drum.
Defective
developing bias
output.
Check procedures/corrective measures
Perform the drum surface refreshing (See page 1-3-12).
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine (See page 1-5-29).
Defective color calibration.
Perform the color calibration (Refer to operation guide).
Insufficient toner.
If the display shows the message requesting toner replenishment, replace the container.
Insufficient agitation of toner container.
Shake the toner container vertically approximately 10 times.
Paper damp.
Check the paper storage conditions, replace the paper.
(6) The background is colored.
Print example
Causes
Defective color calibration.
Perform the color calibration (Refer to operation guide).
Defective
developing bias
output.
Defective developing unit.
Check the four colors of image by using the test page of service mode. If the defect appears on a particular color, replace
the developer for that color (See page 1-5-12).
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine (See page 1-5-29).
DefecDefective drum unit.
tive drum
Defective high voltage
surface
PWB.
charging.
Defective engine PWB.
1-4-24
Check procedures/corrective measures
Replace the drum unit (See page 1-5-14).
Replace the high voltage PWB (See page 1-5-34).
Replace the engine (See page 1-5-29).
2K8
(7) White streaks are printed vertically.
Print example
Causes
Check procedures/corrective measures
Foreign object in one of the developing units.
Check the image by using the test print of service mode. If the
white line appears on a particular page, replace the developer
for that color (See page 1-5-12).
Adhesion of soiling to primary transfer
belt.
Replace the intermediate transfer unit (See page 1-5-16).
Dirty LSU protective glass.
Perform the LSU dust shield glass cleaning (See page 1-3-11).
(8) Black streaks are printed vertically.
Print example
Causes
Check procedures/corrective measures
Dirty or flawed drum.
Perform the drum surface refreshing (See page 1-3-12).
Flawed drum. Replace the drum unit (See page 1-5-14).
Deformed or worn cleaning blade in
the drum unit.
Replace the drum unit (See page 1-5-14).
Worn primary transfer belt.
Replace the intermediate transfer unit (See page 1-5-16).
Dirty main charger wire.
Perform the main charger cleaning (See page 1-3-11).
(9) Streaks are printed horizontally.
Print example
Causes
Check procedures/corrective measures
Flawed drum.
Replace the drum unit (See page 1-5-14).
Dirty developing section.
Clean any part contaminated with toner in the developing section.
Poor contact of grounding terminal of
drum unit.
Check the installation of the drum unit. If it operates incorrectly, replace it (See page 1-5-14).
(10) Spots are printed.
Print example
Causes
Check procedures/corrective measures
Dirty or flawed drum.
Perform the drum surface refreshing (See page 1-3-12).
Flawed drum. Replace the drum unit (See page 1-5-14).
Deformed or worn cleaning blade in
the drum unit.
Replace the drum unit (See page 1-5-14).
Flawed developing roller.
Replace the developing unit (See page 1-5-12).
Dirty heat roller and press roller.
Clean the heat roller and press roller.
1-4-25
2K8
(11) The leading edge of image begins to print too early or too late.
Print example
Causes
Paper feed clutch or registration
clutch operating incorrectly.
Check procedures/corrective measures
Check the installation of the clutch. If it operates incorrectly,
replace it.
(12) Paper is wrinkled.
Print example
Causes
Check procedures/corrective measures
Paper curled.
Check the paper storage conditions, replace the paper.
Paper damp.
Check the paper storage conditions, replace the paper.
(13) Offset occurs.
Print example
Causes
Check procedures/corrective measures
Deformed or worn cleaning blade in
the drum unit.
Replace the drum unit.
Defective intermediate transfer belt
cleaning.
Replace the intermediate transfer unit (See page 1-5-16).
Defective fuser unit.
Replace the fuser unit (See page 1-5-25).
Wrong types of paper.
Check if the paper meets specifications. Replace paper.
(14) Part of image is missing.
Print example
1-4-26
Causes
Check procedures/corrective measures
Paper damp.
Check the paper storage conditions, replace the paper.
Paper creased.
Replace the paper.
Drum condensation.
Perform the drum surface refreshing (See page 1-3-12).
Dirty or flawed drum.
Perform the drum surface refreshing (See page 1-3-12).
Flawed drum. Replace the drum unit (See page 1-5-14).
Dirty transfer belt.
Clean the transfer belt.
Replace the intermediate transfer unit (See page 1-5-16).
Dirty transfer roller.
Clean the transfer roller.
Replace the transfer roller unit (See page 1-5-19).
2K8
(15) Fusing is loose.
Print example
Causes
Check procedures/corrective measures
Wrong types of paper.
Check if the paper meets specifications, replace paper.
Flawed heat roller or press roller.
Replace the fuser unit (See page 1-5-25).
(16) Colors are printed offset to each other.
Print example
Causes
Check procedures/corrective measures
Defective calibration.
Perform the color calibration (Refer to operation guide).
Slip the mirror position of laser scanner unit.
Perform the color registration. When the problem is not
cleared, perform the manual color registration adjustment
(Refer to operation guide).
1-4-27
2K8
1-4-4
Electric problems
Problem
(1)The machine does
not operate when the
power switch is
turned on.
(2)Drum motor M/C/
Y/K, duplex motor
and fuser motor do
not operate.
(3)Power source fan
motor, ozone fan
motor, developing fan
motor1/2 and fuser
fan motor 1/2 do not
operate.
(4)Paper feed clutch,
registration clutch,
developing clutch K,
duplex clutch and
intermediate clutch
do not operate.
(5)MP paper feed
solenoid, ID solenoid,
duplex solenoid do
not operate.
1-4-28
Causes
Check procedures/corrective measures
The power cord is not
plugged in properly.
Check the contact between the power plug and the outlet.
No electricity at the power
outlet.
Measure the input voltage.
Broken power cord.
Check for continuity. If none, replace the cord.
Defective power switch.
Check for continuity across the contacts. If none, replace the
power switch.
Defective power source
PWB.
Replace the power source PWB (See page 1-5-26).
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Drum motor M/C/Y/K - Engine PWB (YC18)
Duplex motor - Engine PWB (YC17)
Fuser motor - Engine PWB (YC39)
Broken the gear.
Check visually and replace the gear if necessary.
Defective motor.
Replace the motor.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Broken the fan motor coil.
Check for continuity across the coil. If none, replace the fan
motor.
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Power source fan motor - Engine PWB (YC8)
Ozone fan motor - Engine PWB (YC11)
Developing fan motor 1 - Engine PWB (YC10)
Developing fan motor 2 - Engine PWB (YC41)
Fuser fan motor 1 - Paper exit PWB (YC2)
Fuser fan motor 2 - Engine PWB (YC44)
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Broken clutch coil.
Check for continuity across the coil. If none, replace the clutch.
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Paper feed clutch - Engine PWB (YC26)
Registration clutch - Engine PWB (YC26)
Developing clutch K - Engine PWB (YC26)
Duplex clutch - Engine PWB (YC3)
Intermediate clutch - Engine PWB (YC3)
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Broken solenoid coil.
Check for continuity across the coil. If none, replace the solenoid.
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
MP paper feed solenoid - Engine PWB (YC40)
ID solenoid - Engine PWB (YC43)
Duplex solenoid - paper exit PWB (YC3)
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective paper exit PWB.
Replace the paper exit PWB.
2K8
Problem
(6)Main charging is
not performed.
Causes
Check procedures/corrective measures
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the high voltage PWB
(See page 1-5-34).
High voltage PWB - Engine PWB (YC16)
Defective main charger unit
Replace the main charger unit (See page 1-5-15).
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the high voltage PWB
(See page 1-5-34).
High voltage PWB - Engine PWB (YC16)
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the high voltage PWB
(See page 1-5-34).
High voltage PWB - Engine PWB (YC16)
Defective high voltage
PWB.
Replace the high voltage PWB (See page 1-5-34).
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
(9)The message
requesting paper to
be loaded is shown
when paper is
present in the cassette.
Defective paper sensor 1/2.
Replace the engine PWB (See page 1-5-29).
Broken paper sensor 1/2
actuator.
Check the bending of the actuator lever of the paper sensor 1/2 if
there is trouble, remedy or replace.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
(10)The message
requesting paper to
be loaded is shown
when paper is
present in the MP
tray.
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
MP tray sensor - Engine PWB (YC21)
Defective MP tray sensor.
Replace the MP tray sensor.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
(11)The size of paper
in the cassette is not
displayed correctly.
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Cassette size switch - Engine PWB (YC9)
Defective cassette size
switch.
Replace the cassette size switch.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
A piece of paper torn from
copy paper is caught
around registration switch,
duplex conveying sensor or
paper exit sensor.
Check and remove if any.
Defective registration sensor or duplex conveying
sensor.
Replace the registration sensor or duplex conveying sensor.
(7)No developing
bias is output.
(8)Transfer charging
is not performed.
(12)A paper jam in
the paper feed section, paper conveying
section, fuser section or duplex section
is indicated when the
power switch is
turned on.
Defective paper exit sensor. Replace the paper exit PWB.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
1-4-29
2K8
Problem
(13)The message
requesting front
cover to be closed is
displayed when the
front cover is closed.
(14)The message
requesting cover to
be closed is displayed when the top
cover is closed.
(15)The message
requesting left cover
to be closed is displayed when the left
cover is closed.
(16)Defective waste
toner box detecting.
(17)Others.
1-4-30
Causes
Check procedures/corrective measures
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Front cover open/close switch - Paper exit PWB (YC5)
Paper exit PWB (YC1) - Engine PWB (YC20)
Defective front cover open/
close switch.
Replace the front cover open/close switch.
Defective paper exit PWB.
Replace the paper exit PWB.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Interlock switch - Engine PWB (YC13)
Defective interlock switch.
Replace the interlock switch.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Left cover switch - Engine PWB (YC14)
Defective left cover switch.
Replace the left cover switch.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Defective harness or
improper connector insertion.
Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
Waste toner full sensor - Engine PWB (YC12)
Defective waste toner full
sensor.
Replace the waste toner full sensor.
Defective engine PWB.
Replace the engine PWB (See page 1-5-29).
Wiring is broken, shorted or
makes poor contact.
Check for continuity. If none, repair.
2K8
1-4-5
Mechanical problems
Problem
(1)No primary paper
feed.
Causes/check procedures
Corrective measures
Check if the surfaces of the paper feed roller, Clean with isopropyl alcohol.
MP paper feed roller are dirty with paper powder.
Check if the paper feed roller, MP paper feed
roller are deformed.
Check visually and replace any deformed
rollers (See page 1-5-8 and 1-5-11).
Defective paper feed clutch installation.
Check visually and remedy if necessary.
Check if the surfaces of the upper and lower
registration rollers are dirty with paper powder.
Clean with isopropyl alcohol.
Defective registration clutch installation.
Check visually and remedy if necessary.
Width guide in a cassette installed incorrectly.
Check the width guide visually and correct
or replace if necessary.
Deformed width guide in a cassette.
Repair or replace if necessary.
Defective MP tray slider installation.
Check the slider visually and correct or
replace if necessary.
Deformed MP tray slider.
Check visually and replace any deformed
slider.
Check if the paper is curled.
Replace the paper.
Paper is not placed correctly in the cassette.
Set the paper correctly.
Check if the retard roller is worn.
Replace the retard roller pulley if it is worn.
Check if the separator pad or MPF separation
pad is worn.
Replace the separator pad if it is worn.
Check if the paper is excessively curled.
Replace the paper.
Check if the contact between the front and
rear registration rollers is correct.
Check visually and remedy if necessary.
Check if the heat roller or press roller is
extremely dirty or deformed.
Replace the fuser unit (See page 1-5-25).
(6)Toner drops on the
paper conveying path.
Check if the drum unit or developing unit is
extremely dirty.
Clean the drum unit or developing unit.
(7)Abnormal noise is
heard.
Check if the pulleys, rollers and gears operate
smoothly.
Grease the bearings and gears.
Check if the following electromagnetic
clutches are installed correctly:
Check visually and remedy if necessary.
(2)No secondary paper
feed.
(3)Skewed paper feed.
(4)Multiple sheets of
paper are fed at one
time.
(5)Paper jams.
1-4-31
2K8
This page is intentionally left blank.
1-4-32
2K8
1-5 Assembly and Disassembly
1-5-1
Precautions for assembly and disassembly
(1) Precautions
Be sure to turn the power switch off and disconnect the power plug before starting disassembly.
When handling PWBs, do not touch connectors with bare hands or damage the PWB.
Use only the specified parts to replace the fuser thermal cutout. Never substitute electric wires, as the machine may be
seriously damaged.
Do not touch any PWB containing ICs with bare hands or any object prone to static charge.
When removing the hook of the connector, be sure to release the hook.
Take care not to get the wire caught.
To reassemble the parts, use the original screws. If the types and the sizes of screws are not known, refer to the PARTS
LIST.
(2) Drum
Note the following when handling or storing the drum.
When removing the drum unit, never expose the drum surface to strong direct light.
Keep the drum at an ambient temperature between 0 °C/32 °F and 40 °C/104 °F and at a relative humidity not higher than
90% RH. Avoid abrupt changes in temperature and humidity.
Avoid exposure to any substance which is harmful to or may affect the quality of the drum.
Do not touch the drum surface with any object. Should it be touched by hands or stained with oil, clean it.
(3) Toner container
Store the toner container(s) in a cool, dark place.
Avoid direct light and high humidity.
1-5-1
2K8-1
(4) How to tell a genuine Kyocera Mita toner container
As a means of brand protection, the Kyocera Mita toner container utilizes an optical security technology to enable visual
validation. A validation viewer is required to accomplish this.
Hold the validation viewer over the left side part of the brand protection seal on the toner container. Through each window
of the validation viewer, the left side part of the seal should be seen as follows:
A black-colored band when seen through the left side window
A shiny or gold-colored band when seen through the right side window
The above will reveal that the toner container is a genuine Kyocera Mita branded toner container, otherwise, it is a counterfeit.
See through the left window
( marking)
See through the right window
( marking)
Validation viewer
Validation viewer
Brand
protection
seal
Brand
protection
seal
A black-colored band when
seen through the left side window
A shiny or gold-colored band when
seen through the right side window
Figure 1-5-1
The brand protection seal has an incision as shown below to prohibit reuse.
Incision
Cut
Figure 1-5-2
1-5-2
2K8
1-5-2
Outer covers
(1) Detaching and refitting the left rear cover, left upper cover and left front cover
Procedure
1. Open the left cover.
2. Remove the waste toner box.
3. Remove two screws.
Left cover
Screw
Screw
Waste toner box
Figure 1-5-3
1-5-3
2K8
4. Open the top cover.
5. Release the five hooks and then remove the
left rear cover.
Top cover
Hooks
Left rear cover
Hooks
Left rear cover
Figure 1-5-4
1-5-4
2K8
6. Open the front cover.
7. Remove the screw and then remove the left
upper cover.
8. Slide the left front cover upward and then
remove it.
Left upper cover
Screw
Left front cover
Front cover
Figure 1-5-5
1-5-5
2K8
(2) Detaching and refitting the right rear cover, right upper cover and right front cover
Procedure
1. Open the top cover.
2. Open the right cover.
3. Remove the two screws.
4. Release the five hooks and then remove the
right rear cover.
Hooks
Screw
Right cover
Screw
Right rear cover
Hooks
Right rear cover
Figure 1-5-6
1-5-6
2K8
5. Open the front cover.
6. Remove the two screws and then remove
the right upper cover.
7. Slide the right front cover and then remove
it.
Screws
Right upper cover
Right front cover
Front cover
Figure 1-5-7
1-5-7
2K8
1-5-3
Paper feed section
(1) Detaching and refitting the paper feed roller assembly (paper feed roller and pickup roller)
Procedure
1. Remove the cassette.
Cassette
Figure 1-5-8
1-5-8
2K8
2. While pressing lever A and then slide the
feed roller pin.
3. While pressing the lever B and then remove
the paper feed roller assembly.
Feed roller pin
Lever A
Lever B
Paper feed roller
assembly
Figure 1-5-9
4. Check or replace the paper feed roller
assembly and refit all the removed parts.
Spring
Paper feed roller assembly
Figure 1-5-10
1-5-9
2K8
(2) Detaching and refitting the retard roller
Procedure
1. Remove the cassette (See page 1-5-8).
2. Release the two hooks and then remove the
retard guide (retard roller assembly).
Retard guide
Hook
Hook
Cassette
Cassette
Hook
Hook
Figure 1-5-11
3. Remove the retard roller assembly.
4. Check or replace the retard roller assembly
and refit all the removed parts.
Retard guide
Retard roller assembly
Figure 1-5-12
1-5-10
2K8
(3) Detaching and refitting the MP paper feed roller
Procedure
1. Open the front cover.
2. While releasing the hook and the slide the
MPF shaft.
3. Remove the MP paper feed roller.
4. Check or replace the MP paper feed roller
and refit all the removed parts.
MP paper feed roller
Front cover
Hook
MPF shaft
MP paper feed roller
Figure 1-5-13
1-5-11
2K8
1-5-4
Developing section
(1) Detaching and refitting the developing unit
Procedure
1. Remove the intermediate transfer unit (See
page 1-5-16).
2. Remove the drum units (M,C,Y and K) (See
page 1-5-14).
3. Pinch the lever of developing unit to release
the lock.
4. Hold the grips and then remove the developing units (M,C,Y and K).
Lever
Grip
Grip
Developing unit
Developing unit M
C
K
Y
Figure 1-5-14
1-5-12
2K8
5. Check or replace the developing unit and
refit all the removed parts.
NOTE:
Remove the cap before installing the new
developing unit.
When reinstalling the developing unit, press
it down until the lever of developing unit is
engaged with the notch.
If it is difficult to engage the lever, press the
unit down while rotating the gear to engage
it.
Cap
New developing unit
Lever
Lever
Developing unit
Notch
Notch
Gear
Figure 1-5-15
1-5-13
2K8
1-5-5
Drum section
(1) Detaching and refitting the drum unit
Procedure
1. Remove the intermediate transfer unit (See
page 1-5-16).
2. Hold the grips and then remove the drum
units (M,C,Y and K).
3. Check or replace the drum unit and refit all
the removed parts.
Grip
Grip
Drum unit M
C
K
Y
Figure 1-5-16
1-5-14
2K8
(2) Detaching and refitting the main charger unit
Procedure
1. Open the left cover.
2. Remove the main charger units (M,C,Y and
K).
3. Check or replace the main charger units and
refit all the removed parts.
Main charger
unit M
Left cover
C
Y
K
Figure 1-5-17
1-5-15
2K8
1-5-6
Transfer/separation section
(1) Detaching and refitting the intermediate transfer unit
Procedure
1. Open the top cover.
2. Remove the all toner containers (M,C,Y and
K).
C
Toner container M
Y
K
Top cover
Figure 1-5-18
3. Remove the all container guides (M,C,Y and
K).
C
Y
K
Container guide M
Figure 1-5-19
1-5-16
2K8
4. Remove the two screws.
5. Open the RFID holder.
Screw
Screw
RFID holder
Figure 1-5-20
6. Slide the lever in order to close the toner
feed shutter.
Lever
Lever
(OPEN)
(CLOSE)
Figure 1-5-21
1-5-17
2K8
7. Hold the grips and then remove the intermediate transfer unit.
8. Check or replace the intermediate transfer
unit and refit all the removed parts.
Intermediate
transfer unit
Projection
Projection
Guide
Intermediate transfer unit
Guide
Grip
Grip
Intermediate transfer unit
Figure 1-5-22
1-5-18
2K8
(2) Detaching and refitting the transfer roller unit
Procedure
1. Open the front cover.
2. Open the duplex unit B.
3. Release the two hooks and then remove the
transfer roller unit.
4. Check or replace the transfer roller unit and
refit all the removed parts.
Hook
Transfer roller unit
Front cover
Transfer roller unit
Duplex unit B
Transfer roller unit
Hook
Figure 1-5-23
1-5-19
2K8
(3) Detaching and refitting the duplex unit B
Procedure
1. Remove the outer covers (See page 1-5-3).
2. Remove the power source PWB (See page
1-5-26).
3. While releasing the hook and then pull the
MCH cleaning shaft.
MCH cleaning shaft
Hook
Figure 1-5-24
4. Open the front cover.
5. Remove the screw and then remove the
front cover right stopper.
Screw
Front cover
Front cover
right stopper
Figure 1-5-25
1-5-20
2K8
6. Remove the six screws and then remove the
feed drive unit.
Screw
Screw
Screw
Screw
Feed drive unit
Screw
Screw
Figure 1-5-26
7. Remove the four connectors.
YC4
YC39
YW
YC26
YC40
Y
Connectors
Figure 1-5-27
1-5-21
2K8
8. Remove the FFC.
9. Remove the screw and then remove the two
grounding terminals.
FFC
Screw
Grounding terminals
Figure 1-5-28
10. Remove the axis of the front cover left stopper from the hole.
11. Remove the front cover.
Front cover
left stopper
Axis
Hole
Front cover left stopper
Front cover
Figure 1-5-29
1-5-22
2K8
12. Remove the two screws and then remove
the MP paper feed lower unit.
Screw
MP paper feed
lower unit
Screw
Figure 1-5-30
13. Remove the three connectors.
Connector
Connector
Connector
Figure 1-5-31
1-5-23
2K8
14. Open the duplex unit B.
15. Remove the duplex unit B.
16. Check or replace the duplex unit B and refit
all the removed parts.
Duplex unit B
Figure 1-5-32
1-5-24
2K8
1-5-7
Fuser section
(1) Detaching and refitting the fuser unit
Procedure
1. Remove the outer covers (See page 1-5-3).
2. Remove three connectors.
Connector
Connector
Connector
Figure 1-5-33
3. Remove two screws (P tight and S tight).
4. Unhook the hook and then remove the fuser
unit.
5. Check or replace the fuser unit and refit all
the removed parts.
Fuser unit
Screw
(P tight)
Screw (S tight)
Hook
Boss
Fuser unit
Figure 1-5-34
1-5-25
2K8
1-5-8
PWBs
(1) Detaching and refitting the power source PWB
Procedure
1. Remove the right rear cover (See page 1-56).
2. Remove the three screws and then remove
the power source shield.
Screw
Screw
Power source shield
Screw
Figure 1-5-35
3. Remove the connector.
4. Remove the two screws.
Connector
Screw
Screw
Figure 1-5-36
1-5-26
2K8
5. Remove the two connectors and then
remove the power source PWB.
6. Check or replace the power source PWB
and refit all the removed parts.
Connector
Connector
Power source PWB
Figure 1-5-37
1-5-27
2K8
(2) Detaching and refitting the main PWB
Procedure
1. Remove the two screws.
2. Remove the main PWB.
3. Check or replace the main PWB and refit all
the removed parts.
Screw
Main PWB
Screw
Figure 1-5-38
1-5-28
2K8
(3) Detaching and refitting the engine PWB
Procedure
1. Remove the duplex unit B (See page 1-520)
2. Remove the connector.
Connector
Figure 1-5-39
3. Remove the seven screws and then remove
the feed housing.
Screw
Feed housing
Screw
Screw
Screw
Screw
Feed housing
Screw
Screw
Figure 1-5-40
1-5-29
2K8
4.
5.
6.
7.
Remove the connector A.
Remove the developing fan motor 1.
Remove the two connectors B.
Remove the FFC.
FFC
Connector B
Connector B
Connector A
Developing fan motor 1
Figure 1-5-41
8. Remove the three FFCs.
9. Remove the two connectors.
FFC
FFC
FFC
Connector
Connector
Figure 1-5-42
1-5-30
2K8
10. While unlatching the latch and then remove
the lever link.
Lever link
Lever link
Latch
Figure 1-5-43
11. Remove the twenty connectors.
YC39
YW
YC26
YC18
YC3
YC40
BK
YC17
YC44
YC33
YC27
BE
YC37 YC36 YC34
RD BE
GY
YC25 YC24 YC11 YC38
BK YW
YC22 YC23 YC15
YC28
Connectors
Figure 1-5-44
1-5-31
2K8
12. Remove the three screws and then remove
the engine PWB assembly.
Screw
Screw
Screw
Engine PWB assembly
Figure 1-5-45
13. Remove the connector from the engine
PWB.
Engine PWB
Connector
Figure 1-5-46
1-5-32
2K8
14. Remove the two screws and then remove
the engine PWB.
15. Check or replace the engine PWB and refit
all the removed parts.
To replace the engine PWB, remove the
EEPROM (U4) from the old engine PWB
and mount it to the new engine PWB.
EEPROM
Screw
U4
Screw
Engine PWB
Engine PWB plate
Caution on re-installing the engine board
assembly
Insert the engine PWB assembly in the
printer so that both the engine PWB and the
harness bracket are flush at each end.
Do not insert the engine PWB assembly the
way beyond the above, otherwise, the
engine PWB plate will be deformed, causing
malfunctioning of the ID sensor cleaning
system.
Engine PWB
assembly
Engine PWB
Printer
Harness bracket
Side of
Harness Engine PWB
bracket
Engine PWB
assembly
Insert
position
Figure 1-5-47
1-5-33
2K8
(4) Detaching and refitting the high voltage PWB
Procedure
1. Remove the all drum units (See page 1-514).
2. Remove the all developing units (See page
1-5-12).
3. Remove the engine PWB (See page 1-529).
4. Remove the screw and then remove the HV
terminal assembly K.
Screw
HV terminal assembly K
Figure 1-5-48
5. Remove the screw and then remove the
inner cover.
6. Remove the three HV bracket C assemblies.
Inner cover
Screw
HV bracket
C assembly
HV bracket
C assembly
HV bracket
C assembly
Figure 1-5-49
1-5-34
2K8
7. Remove five terminals.
8. Remove the TC high voltage bracket.
9. Remove the two screws.
TC high voltage bracket
Screw
Terminal
Terminal
Screw
Terminal
Terminal
Terminal
Figure 1-5-50
10. Remove the screw.
Screw
Figure 1-5-51
1-5-35
2K8
11. Remove the high voltage PWB assembly.
High voltage PWB assembly
Figure 1-5-52
12. Remove five screws and then remove the
high voltage PWB.
13. Check or replace the high voltage PWB and
refit all the removed parts.
Screw
Screw
Screw
Screw
Screw
High voltage PWB
Figure 1-5-53
1-5-36
2K8
1-5-9
Others
(1) Detaching and refitting the laser scanner unit
Procedure
1. Remove the all drum units (See page 1-514).
2. Remove the all developing units (See page
1-5-12).
3. Remove the two connectors.
4. Remove the wires form the three clamps.
Clamp
Clamp
Wires
Clamp
Connector
Connector
Figure 1-5-54
5. Draw the two connectors into the printer
inside.
Connector
Connector
Figure 1-5-55
1-5-37
2K8
6. Remove the each three screws and then
remove the laser scanner units (MC,YK).
7. Check or replace the laser scanner units
and refit all the removed parts.
Laser scanner unit MC
Screws
Screw
Laser scanner
unit YK
Screws
Screw
Screw
Screw
Laser
scanner
unit
Screw
Figure 1-5-56
1-5-38
2K8
(2) Detaching and refitting the ozone filter
Procedure
1. Open the right cover.
2. Remove the ozone filter.
3. Check or replace the ozone filter and refit all
the removed parts.
Right cover
Ozone filter
Figure 1-5-57
1-5-39
2K8
(3) Direction of installing the principal fan motors
When detaching or refitting the developing fan motor 1, developing fan motor 2, fuser fan motor 1 or ozone fan motor, be
careful of the airflow direction (intake or exhaust).
Intake
Fuser fan motor 1
(Rating label: Inside)
Intake
Intake
Developing
fan motor 1
(Rating label: Inside)
Developing
fan motor 2
(Rating label: Inside)
Ozone fan motor
(Rating label: Outside)
Exhaust
Figure 1-5-58
1-5-40
2K8
1-6 Firmware
1-6-1
Downloading firmware
(1) Firmware file
Firmware files are named after the following codes:
Firmware file name example
Engine firmware
master download file
DL_ENGN.2K8
S2K8_1000000024.x
Extention
Software ID
Build number
Product code
2K8: This machine
Update history
Classification (Normally: 0)
Pause (underscore)
Supplement (Normally: 00)
Firmware category
10: Engine
System firmware
master download file
DL_CTRL.2K8
2K8_3000.000.088.bin
2K8_3100.000.004.hex
Product code
2K8: This machine
Extention
Build number
Update history
Classification (Normally: 0)
Supplement (Normally: 00)
Pause (underscore)
Firmware category
30: System (Main)
31: System (BROM)
Figure 1-6-1
1-6-1
2K8
(2) Downloading the firmware from the USB memory
To download data written in a USB memory to the printer, proceed as explained in this section.
CAUTION
Downloading firmware takes several minutes. Do not turn power off during downloading.
Procedure
1. Turn printer power off.
2. Insert the USB memory to the PC's USB
slot.
3. Copy the firmware file to download to the
root directory of the USB memory.
4. Remove the USB memory from the PC's
USB slot.
5. Insert the USB memory into the printer's
USB memory slot.
USB memory slot
USB memory
Figure 1-6-2
6. Turn printer power on.
7. When message display (1) is displayed to
detect firmware in the USB memory.
8. Message display (2) is displayed during
downloading.
9. When message display (3) is displayed to
indicate downloading is finished.
Message display
(1)
supervisor mode
(2)
supervisor mode
USB data reading
(3)
2K8_1000.000.024
[E1F9]
� Product code
� Firmware category
10: Engine
30: System
31: System (BROM)
� Supplement (Normally: 00)
� Classification (Normally: 0)
� Update history
� Build number
� Checksum
Figure 1-6-3
1-6-2
2K8
10. Turn printer power off.
11. Remove the USB memory from USB memory slot.
12. Turn printer power on.
13. Print the status page to check that the firmware version has been updated (See page
P.1-3-2).
USB memory slot
USB memory
Figure 1-6-4
1-6-3
2K8
(3) Downloading the firmware from the memory card
To download data written in a memory card (CompactFlash) to the printer, proceed as explained in this section.
CAUTION
Downloading firmware takes several minutes. Do not turn power off during downloading.
Procedure
1. Turn printer power off.
2. Remove the two screws and then remove
the main PWB.
3. Insert the memory card into the memory
card socket.
4. Refit the main PWB.
Screw
Main PWB
Screw
Memory card
socket
Memory card
Main PWB
Figure 1-6-5
5. Turn printer power on.
6. Press MENU key on the printer's operation
panel and carry out the memory card formatting procedure (1).
7. When formatting is complete, turn printer
power off.
Message display
Ready
Operation panel key
Press MENU key. Press arrow key.
>Memory Card
>
Press arrow key.
Press arrow key.
>>Format
Press OK key.
(1)
>>Format ?
Press OK key.
Processing
(Format information is
automatically printed.)
Ready
Figure 1-6-6
1-6-4
2K8
8. Remove the two screws and then remove
the main PWB.
9. Remove the formatted memory card from
the memory card socket.
Screw
Main PWB
Screw
Memory card
socket
Memory card
Main PWB
Figure 1-6-7
10. Insert the memory card to the PC's slot or to
the adaptor.
11. Copy the firmware file to download to the
root directory of the memory card.
12. Remove the memory card from the PC's slot
or the adaptor.
Adapter
(Memory card reader)
Memory card
To PC
Figure 1-6-8
1-6-5
2K8
13. Insert the memory card into the memory
card socket.
14. Refit the main PWB.
Screw
Main PWB
Screw
Memory card
socket
Memory card
Main PWB
Figure 1-6-9
15. Turn printer power on.
16. When message display (1) is displayed to
detect firmware in the memory card.
17. Message display (2) is displayed during
downloading.
18. When message display (3) is displayed to
indicate downloading is finished.
Message display
(1)
supervisor mode
(2)
supervisor mode
USB data reading
(3)
2K8_1000.000.024
[E1F9]
� Product code
� Firmware category
10: Engine
30: System
31: System (BROM)
� Supplement (Normally: 00)
� Classification (Normally: 0)
� Update history
� Build number
� Checksum
Figure 1-6-10
1-6-6
2K8
19. Turn printer power off.
20. Remove the two screws and then remove
the main PWB.
21. Remove the memory card from memory
card socket.
22. Refit the main PWB.
23. Turn printer power on.
24. Print the status page to check that the firmware version has been updated (See page
P.1-3-2).
Screw
Main PWB
Screw
Memory card
socket
Memory card
Main PWB
Figure 1-6-11
1-6-7
2K8
This page is intentionally left blank.
1-6-8
2K8
2-1 Mechanical Construction
2-1-1
Paper feed/conveying section
Paper feed/conveying section consists of the paper feed unit that feeds paper from the cassette and the MP tray paper
feed unit that feeds paper from the MP tray, and the paper conveying section that conveys the fed paper to the transfer/
separation section.
(1) Cassette paper feed section
The cassette can contain 500 sheets. The sheet from the cassette is pulled out by rotation of the pickup roller and sent to
the paper conveying section by rotation of the paper feed roller. Also the retard roller prevents multiple feeding of paper.
9
10
13
12
2
3
11
1
4
7
5
8
6
Figure 2-1-1 Cassette paper feed section
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Pickup roller
Paper feed roller
Paper feed holder
Retard roller
Retard holder
Cassette base
Bottom plate
(8)
(9)
(10)
(11)
(12)
(13)
Lift work plate
Paper sensor 1
Paper sensor 2
Actuator (paper sensor 1, 2)
Lift limit sensor
Actuator (lift limit sensor)
2-1-1
2K8
Engine PWB
Paper feed
clutch
FEDCLDRN
YC26-12
Lift limit sensor
Lift motor
LMOTDRN
Paper sensor 1
YC28-1
Paper sensor 2
Paper feed motor
FEMOTRDYN
YC3-1
SPEEDSEL
YC3-2
FECLKCLK
REMOTREN
YC3-3
YC3-4
Figure 2-1-2Cassette paper feed section block diagram
2-1-2
2K8
(2) MP tray paper feed section
The MP tray can contain about 150 sheets. Feeding from the MP tray is performed by the rotation of the MP paper feed
roller. Also, function of the MPF separation pad prevents paper from multiple feeding.
10
8
1
6
9
5
2
11
4
7
3
Figure 2-1-3 MP tray paper feed section
(1)
(2)
(3)
(4)
MP paper feed roller
MPF separation pad
MPF separator
MPF bottom plate
(5)
(6)
(7)
(8)
MPF friction pad
MP tray sensor
Actuator (MP tray sensor)
MPF guide R/L
(9) MPF base
(10) MPF upper tray
(11) MPF cover
Engine PWB
MP paper
feed solenoid
MP tray
sensor
Paper feed motor
MPSOLDRN
YC40-2
MPHANDS
YC21-6
FEMOTRDYN
YC3-1
SPEEDSEL
YC3-2
FECLKCLK
REMOTREN
YC3-3
YC3-4
Figure 2-1-4 MP tray paper feed section block diagram
2-1-3
2K8
(3) Paper conveying section
The paper conveying section conveys paper to the transfer/separation section as paper feeding from the cassette or MP
tray, or as paper refeeding for duplex printing. Paper by feeding is conveyed by the middle roller to the position where the
registration sensor is turned on, and then sent to the transfer/separation section by the front registration roller and rear
registration roller.
4
5
2
3
1
Figure 2-1-5 Paper conveying section
(1)
(2)
(3)
(4)
(5)
2-1-4
Feed pulley
Middle roller
Registration sensor
Front registration roller
Rear registration roller
2K8
Engine PWB
Registration
clutch
REGCLDRN
Registration
sensor
REGPAP
YC7-2
FEMOTRDYN
YC3-1
SPEEDSEL
YC3-2
Paper feed
motor
FECLKCLK
REMOTREN
Intermediate
clutch
MIDCLDRN
YC26-10
YC3-3
YC3-4
YC3-7
Figure 2-1-6 Paper conveying section block diagram
2-1-5
2K8
2-1-2
Drum section
(1) Drum section
The drum section consists of the drum, the main charger unit, and the cleaning unit, and the drum surface is uniformly
charged in preparation for formation of residual image by laser beam. After transfer is complete, toner remaining on the
drum surface is chipped off with the cleaning blade and is collected to the waste toner box with the drum screw. Also electric charge remaining on the drum surface is eliminated by irradiating the eraser lamp for preparing for next charge of the
main charger.
2
4
5
1
3
6
Figure 2-1-7 Drum section
(1)
(2)
(3)
(4)
(5)
(6)
2-1-6
Drum
Drum shaft
Main charger unit
Cleaning blade
Drum screw
Eraser lamp
2K8
STMBN
YC18-1
STMAN
YC18-2
STMB
YC18-3
STMA
YC18-4
Drum
Drum motor M
Drum PWB M
Engine PWB
YC18-5
YC18-6
YC18-7
YC18-8
Drum unit M
STCBN
STCAN
STCB
STCA
EEPROM
YC8-2
YC8-1
YC8-3
YC8-7
YC8-8
EEPROM
ERASEYDR
EEDATA
EECLK
DA1
DA0
YC5-2
YC5-1
YC5-3
YC5-7
YC5-8
ERASEKDR
EEDATA
EECLK
DA1
DA0
YC2-2
YC2-1
YC2-3
YC2-7
YC2-8
Drum
Drum motor Y
Eraser lamp Y
Drum unit Y
EEPROM
Drum
Drum motor K
Eraser lamp K
Drum PWB K
Drum unit K
YC34-1
YC34-3
YC34-5
YC34-7
YC34-9
YC34-11
ERASECDR
EEDATA
EECLK
DA1
DA0
Eraser lamp C
Drum PWB Y
STKBN
YC18-13
STKAN
YC18-14
STKB
YC18-15
YC18-16 STKA
YC11-2
YC11-1
YC11-3
YC11-7
YC11-8
Drum
Drum unit C
STYBN
STYAN
STYB
STYA
ERASEMDR
EEDATA
EECLK
DA1
DA0
Drum motor C
Drum PWB C
YC18-9
YC18-10
YC18-11
YC18-12
Drum relay PWB
Eraser lamp M
EEPROM
ERASEMDR
ERASECDR
ERASEYDR
EECLK
EEDATA
ERASEKDR
YC1-1
YC1-3
YC1-5
YC1-7
YC1-9
YC1-11
Figure 2-1-8 Drum section block diagram
2-1-7
2K8
(2) Main charger unit
The main charger unit consists of the main charger wire, the main charger grid, and the main charger shield, and charges
the drum for image forming. Also the main charger unit is equipped with a main charger cleaning motor to conduct cleaning automatically.
3
2
1
4
5
Figure 2-1-9 Main charger unit
(1)
(2)
(3)
(4)
(5)
2-1-8
Main charger shield
Main charger wire
Main charger grid
Main charger cleaner unit
Main charger spiral
2K8
Drum unit M
Drum
High voltage
PWB
Grid
Engine PWB
Wire
Shield
Zener
PWB M
Main charger output M
CN1-11
MMCNT
YC16-17
Main charger unit M
Drum unit C
Drum
Grid
Wire
Shield
Zener
PWB C
Main charger output C
CN1-14
MCCNT
YC16-14
Main charger unit C
Drum unit Y
Drum
Grid
Wire
Shield
Zener
PWB Y
Main charger output Y
CN1-17
MYCNT
YC16-11
Main charger unit Y
Drum unit K
Drum
Grid
Wire
Zener
PWB K
Shield
Main charger output K
CN1-20
MKCNT
YC16-8
Main charger unit K
Main
charger
cleaning
motor
MCHMOTA YC36-1
MCHMOTB YC36-2
Figure 2-1-10Main charger unit block diagram
2-1-9
2K8
2-1-3
Expose section
(1) Laser scanner unit
The charged surface of the drum is then scanned by the laser beam from the laser scanner unit. The laser beam is dispersed as the polygon motor revolves to reflect the laser beam over the drum. Various lenses and mirror are housed in the
laser scanner unit, adjust the diameter of the laser beam, and focalize it at the drum surface. Also the LSU cleaning motor
is activated to conduct automatically cleaning of the LSU dust shield glass.
8
8
9
7
6
7
6
2
5
4
3
1
3
Figure 2-1-11 Laser scanner unit
(1)
(2)
(3)
(4)
(5)
2-1-10
Polygon motor
Polygon mirror
F-θ lens A
F-θ lens B
Mirror A
(6)
(7)
(8)
(9)
Mirror B
Mirror C
LSU dust shield glass
LSU spiral
4
5
2K8
Drum
Drum
Figure 2-1-12 Laser scanner unit
(1)
(2)
(3)
(4)
(5)
(6)
(7)
APC PWB (Laser diode)
Collimator lens
Cylindrical lens
Polygon motor (mirror)
F-θ lens A
F-θ lens B
Mirror A
(8)
(9)
(10)
(11)
(12)
(13)
Mirror B
Mirror C
PD mirror
PD mirror
SOS lens
PD PWB (Pin photo diode sensor)
2-1-11
2K8
Laser scanner unit MC
Engine PWB
Main PWB
APC PWB M
PD PWB M
PDN(M)
YC2-2
YC1-2
YC1-3
YC1-4
YC1-5
YC1-7
YC1-9
POLCLK0
POLRDYN0
POLONN0
Polygon
motor MC
PD PWB C
THERM2
PDN(C)
LONBMN
ENBMN
VDOMP
VDOMN
VREFM
PDMN
APC PWB C
YC1-8
YC1-2
YC1-3
YC1-4
YC1-5
YC2-3 YC1-7
YC2-2 YC1-9
THERMC
LONBCN
ENBCN
VDOCP
VDOCN
VREFY
PDCN
YC30-2
YC30-3
YC30-4
YC30-5
YC30-7
YC30-9
YC31-A1
YC31-A2
YC31-A6
VDOMP
VDOMN
PDMN
YC6-A20
YC6-A19
YC6-A15
YC30-18
YC30-19
YC30-20
YC30-8
YC30-11
YC30-12
YC30-13
YC30-14
YC30-16
YC30-17
YC31-B1
YC31-B2
YC31-B6
VDOCP
VDOCN
PDCN
YC6-B20
YC6-B19
YC6-B15
Laser scanner unit YK
APC PWB Y
YC1-2
YC1-3
YC1-4
YC1-5
YC1-9
PD PWB Y
PDN(Y)
PD PWB K
THERM1
PDN(K)
YC29-2
YC29-3
YC29-4
YC29-5
YC29-9
YC2-2
APC PWB K
YC1-8
YC1-2
YC1-3
YC1-4
YC1-5
YC2-3 YC1-7
YC2-2 YC1-9
LSU
cleaning
motor
YC31-A3
YC31-A4
YC31-A7
POLCLK1
POLRDYN1
POLONN1
Polygon
motor YK
Polygon motor
thermistor
LONBYN
ENBYN
VDOYP
VDOYN
PDYN
THERMK
LONBKN
ENBKN
VDOKP
VDOKN
VREFK
PDKN
PDYN
YC6-A18
YC6-A17
YC6-A14
YC29-18
YC29-19
YC29-20
YC29-8
YC29-11
YC29-12
YC29-13
YC29-14
YC29-16
YC29-17
YC31-B3
YC31-B4
YC31-B7
LSUMOTA YC37-1
LSUMOTB YC37-2
Figure 2-1-13Expose section block diagram
2-1-12
VDOYP
VDOYN
VDOKP
VDOKN
PDKN
YC6-B18
YC6-B17
YC6-B14
2K8
2-1-4
Developing section
The developing unit consists of the sleeve roller that forms the magnetic brush, the magnet roller, the developing blade
and the developing screws that agitate the toner. Also, the toner sensor checks whether or not toner remains in the developing unit.
1
2
6
3
5
4
7
Figure 2-1-14 Developing unit and toner container
(1)
(2)
(3)
(4)
Sleeve roller
Magnet roller
Developing blade
Developing screw A
(5)
(6)
(7)
Developing screw B
Sleeve cover
Toner sensor
2-1-13
2K8
Sleeve roller
YC25-2
Developing sleeve bias output M
Toner
motor M
TNMMDRN
Developing magnet bias output M
Magnet roller
Toner sensor M
Engine PWB
Developing
unit M
Developing PWB M
High
voltage
PWB
Sleeve roller
YC24-2
Developing sleeve
bias output C
Developing magnet
bias output C
Toner
motor C
TNMCDRN
Magnet roller
Toner sensor C
Developing
unit C
Developing PWB C
Sleeve roller
YC23-2
Developing sleeve
bias output Y
Toner
motor Y
TNMYDRN
Developing magnet
bias output Y
YC27-1
YC27-2
YC27-3
YC27-4
YC27-5
MOTREV
DLPMOTRDYN
SPEEDSEL
DLPMOTCLK
DLPMOTREN
YC22-2
TNMKDRN
Magnet roller
Toner sensor Y
Developing
motor
MCY
Developing
unit Y
Developing PWB Y
Sleeve roller
YC16-9
YC16-10
YC16-12
YC16-13
YC16-15
YC16-16
YC16-18
YC16-19
DLPTHERM
Drum relay PWB
BKSCNT
BKMCNT
BYSCNT
BYMCNT
BCSCNT
BCMCNT
BMSCNT
BMMCNT
CN1-19
CN1-18
CN1-16
CN1-15
CN1-13
CN1-12
CN1-10
CN1-9
Figure 2-1-15 Developing section block diagram
2-1-14
Developing
unit K
YC4-4
TNSENY
TNSENK
YC4-2
YC1-2
YC1-4
YC1-6
YC1-13
YC1-14
TNSENC
Developing
clutch K
YC7-2
TNSENM
TNSENC
TNSENY
TNSENK
DLPTHERM
Magnet roller
Developing PWB K
YC10-2
YC34-2
YC34-4
YC34-6
YC34-13
YC34-14
DLPCLDRN
Toner sensor K
Developing
motor K
TNSENM
YC26-1
MOTKREV
DLPMOTKRDYN
SPEEDSEL
DLPMOTKCLK
DLPMOTKREN
Developing
sleeve bias
output K
Developing
magnet bias
output K
YC13-2
YC26-3
YC26-4
YC26-5
YC26-6
YC26-7
Toner
motor K
2K8
2-1-5
Transfer/separation section
The transfer/separation section consists of the intermediate transfer unit and the transfer roller unit. The intermediate
transfer unit consists of the transfer cleaning unit, the transfer belt, and the four primary transfer rollers for respective color
drums, and forms a full-color toner image by superimposing and transferring single-color toner images formed on each
drum onto the transfer belt. Also with the left and right ID sensors mounted on the machine frame, the toner density on the
transfer belt is measured. The transfer cleaning unit collects toner remaining on the transfer belt after secondary transfer
and forwards it as waste toner to the waste toner box. The transfer roller unit consists of the secondary transfer roller
mounted to the paper conveying unit and the separation brush. To the secondary transfer roller, DC bias is applied from
the high voltage PWB. The toner image formed on the transfer belt is transferred to the paper by the potential difference
and the paper is separated by curvature separation.
7
9
13
1
3
5
4
6
2
10
8
14
12 11
Figure 2-1-16 Transfer/separation section
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Tension roller
Drive roller
Primary transfer roller M
Primary transfer roller C
Primary transfer roller Y
Primary transfer roller K
Transfer belt
(8)
(9)
(10)
(11)
(12)
(13)
(14)
Cleaning fur brush
Cleaning roller
Cleaning screw
Secondary transfer roller
Paper chute
Separation needle
Left ID sensor/Right ID sensor
2-1-15
2K8
Transfer belt
Secondary
transfer roller
Primary
transfer
roller K
High voltage PWB
Right
ID sensor
LEDREFR
Primary transfer
bias output C
VOSL
LEDREFL
Primary transfer
bias output M
VOPL
Left ID sensor
VOSR
Primary
transfer
roller Y
Cleaning bias output
Primary
transfer
roller C
VOPR
Primary
transfer
roller M
Cleaning
roller
Primary transfer bias output Y
Primary transfer bias output K
CN1-21
T2RREMN
CN1-8
CLCNT
YC16-20
CN1-7
T1MCNT
YC16-21
CN1-6
T1CCNT
YC16-22
CN1-5
T1YCNT
YC16-23
CN1-4
T1KCNT
YC16-24
CN1-3
T2CNT
YC16-25
Engine PWB
YC6-5
YC6-4
YC6-2
YC5-5
YC16-7
Figure 2-1-17 Transfer/separation section block diagram
2-1-16
YC5-4
YC5-2
Secondary transfer bias output
2K8
2-1-6
Fuser section
The paper sent from the transfer/separation section is interleaved between the heat roller and the press roller. The heat
roller is heated by the fuser heater lamp, and the toner is fused by heat and pressure and fixed onto the paper because the
press roller is pressed by the fuser press spring. The surface temperature of heat roller is detected by the fuser thermistor
and controlled by the engine PWB. If the fuser section shows extremely high temperature, the power line will be shut off
and the fuser heater lamp is forced to turn off.
11
10
9
1
4
8
7
2
6
12
5
3
Figure 2-1-18 Fuser section
(1)
(2)
(3)
(4)
(5)
(6)
Upper fuser frame
Lower fuser frame
Heat roller
Press roller
Fuser heater lamp
Fuser thermal cutout
(7)
(8)
(9)
(10)
(11)
(12)
Fuser thermistor
Separators
Paper exit guide
Paper exit roller
Paper exit pulley
Envelope switch
2-1-17
2K8
Paper exit PWB
Engine PWB
YC20-3
PDIRN
YC1-3
Fuser unit
YC6-2
Fuser thermistor
YC20-2
FTHERM
YC1-2
YC4-2
FTHERM
Fuser
heater lamp
Fuser
thermal cutout
Envelope
switch
YC103-1
YC19-3
ZCROSS
YC103-3
YC102-1
HEATREM
YC102-3
YC19-1
NEUTRAL
Fuser motor
LIVE
STFUBN
STFUAN
STFUB
STFUA
PDIRN
YC39-1
YC39-2
YC39-3
YC39-4
Power source PWB
Figure 2-1-19 Fuser section block diagram
2-1-18
2K8
2-1-7
Paper exit/feed shift section
The paper exit/feedshift section consists of the conveying path which sends the paper that has passed the fuser section to
the top tray or the duplex section. The conveying path is switched by the change guide activated by the duplex solenoid.
7
13
11
10
12
9
5
6
2 1
8
14
3
4
Figure 2-1-20 Paper exit/feed shift section
(1)
(2)
(3)
(4)
(5)
(6)
(7)
Paper exit roller
Paper exit pulley
Paper exit sensor
Actuator (paper exit sensor)
Actuator (paper exit sensor)
Change guide
Paper exit upper guide
(8)
(9)
(10)
(11)
(12)
(13)
(14)
FD roller
Middle pulley
Switchback roller
Middle pulley
Paper full sensor
Actuator (paper full sensor)
Top tray
2-1-19
2K8
Paper exit PWB
Engine PWB
Paper full
sensor
YC1-6 FDFUL
YC20-6
Paper exit
sensor
YC1-4
Duplex
solenoid
DUREVDRN
YC3-2
Fuser motor
YC1-10
EXITPAP
DUREVDRN
STFUBN
STFUAN
STFUB
STFUA
Figure 2-1-21 Paper exit section block diagram
2-1-20
YC20-4
YC20-10
YC39-1
YC39-2
YC39-3
YC39-4
2K8
2-1-8
Duplex/conveying section
The duplex/conveying section consists of conveying path which sends the paper sent from the eject section to the paper
feed/conveying section when duplex printing.
1
2
3
4
9
6
5
10
11
7
8
Figure 2-1-22 Duplex/conveying section
(1)
(2)
(3)
(4)
(5)
(6)
Duplex roller 1
Paper exit pulley
Duplex roller 2
Duplex pulley
Duplex roller 3
Duplex pulley
(7)
(8)
(9)
(10)
(11)
Duplex feed roller
Duplex pulley
Duplex feed guide
Duplex conveying sensor
Actuator
(duplex conveying sensor)
2-1-21
2K8
Paper exit PWB
Duplex
solenoid
DUREVDRN
YC3-2
Duplex motor
Duplex
conveying
sensor
Duplex
clutch
YC1-10
Engnie PWB
DUREVDRN
YC20-10
STDUBN
YC17-1
STDUAN
YC17-2
STDUB
STDUA
YC17-3
YC17-4
DUREGPAP
DUCLDRN
YC21-3
YC3-9
Figure 2-1-23 Duplex/paper conveying section block diagram
2-1-22
2K8
2-2 Electrical Parts Layout
2-2-1
Electrical parts layout
(1) PWBs
5
6
20
24
21
25
16
22
26
17
23
27
18
19
7
13
8
9
10
12
15
11
14
4
1
2
Machine left
3
Machine inside
Machine right
Figure 2-2-1 PWBs
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
Main PWB .................................................... Controls the software such as the print data processing and provides the
interface with computers.
Engine PWB................................................. Controls printer hardware such as high voltage/bias output control, paper
conveying system control, and fuser temperature control, etc.
Power source PWB...................................... After full-wave rectification of AC power source input, switching for
converting to 24 V DC for output. Controls the fuser heater lamp.
High voltage PWB........................................ Generates main charging, developing bias, transfer bias and cleaning
bias.
Operation panel PWB .................................. Controls the LCD display. Consists the LCD display, LED indicators and
key switches.
Paper exit PWB............................................ Interconnects the engine PWB and the electrical parts (paper exit section).
Drum relay PWB .......................................... Interconnects the engine PWB and the drum units/developing units.
APC PWB M ................................................ Generates and controls the laser beam. (magenta)
APC PWB C................................................. Generates and controls the laser beam. (cyan)
APC PWB Y ................................................. Generates and controls the laser beam. (yellow)
APC PWB K ................................................. Generates and controls the laser beam. (black)
PD PWB M................................................... Controls horizontal synchronizing timing of laser beam. (magenta)
PD PWB C ................................................... Controls horizontal synchronizing timing of laser beam. (cyan)
PD PWB Y ................................................... Controls horizontal synchronizing timing of laser beam. (yellow)
2-2-1
2K8
15. PD PWB K ................................................... Controls horizontal synchronizing timing of laser beam. (black)
16. Drum PWB M ............................................... Relays wirings from electrical components on the drum unit M. Drum individual information in EEPROM storage.
17. Drum PWB C ............................................... Relays wirings from electrical components on the drum unit C. Drum individual information in EEPROM storage.
18. Drum PWB Y................................................ Relays wirings from electrical components on the drum unit Y. Drum individual information in EEPROM storage.
19. Drum PWB K................................................ Relays wirings from electrical components on the drum unit K. Drum individual information in EEPROM storage.
20. Zener PWB M .............................................. Adjusts the drum surface potential. (Magenta)
21. Zener PWB C............................................... Adjusts the drum surface potential. (Cyan)
22. Zener PWB Y ............................................... Adjusts the drum surface potential. (Yellow)
23. Zener PWB K ............................................... Adjusts the drum surface potential. (Black)
24. Developing PWB M...................................... Relays wirings from electrical components on the developing unit M.
25. Developing PWB C ...................................... Relays wirings from electrical components on the developing unit C.
26. Developing PWB Y ...................................... Relays wirings from electrical components on the developing unit Y.
27. Developing PWB K ...................................... Relays wirings from electrical components on the developing unit K.
2-2-2
2K8
List of correspondences of PWB names
No.
Name used in service manual
Name used in parts list
1
Main PWB
PARTS PWB MAIN SP
2
Engine PWB
PARTS PWB ENGINE SP
3
Power source PWB
PARTS SWITCHING REGULATOR 120V SP
3
Power source PWB
SWITCHING REGULATOR 230V
4
High voltage PWB
HIGH VOLTAGE UNIT SP
5
Operation panel PWB
P.W.BOARD ASSY LCD CONT
6
Paper exit PWB
P.W.BOARD ASSY EXIT
7
Drum relay PWB
-
8
APC PWB M
-
9
APC PWB C
-
10
APC PWB Y
-
11
APC PWB K
-
12
PD PWB M
-
13
PD PWB C
-
14
PD PWB Y
-
15
PD PWB K
-
16
Drum PWB M
-
17
Drum PWB C
-
18
Drum PWB Y
-
19
Drum PWB K
-
20
Zener PWB M
-
21
Zener PWB C
-
22
Zener PWB Y
-
23
Zener PWB K
-
24
Developing PWB M
-
25
Developing PWB C
-
26
Developing PWB Y
-
27
Developing PWB K
-
2-2-3
2K8
(2) Switches and sensors
12
11
22
20
21
2
17,18
13
14
15
16
10
19
8
3
9
23
5 6
7
4
Machine left
Machine inside
1
Machine right
Figure 2-2-2 Switches and sensors
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Power switch................................................ Turns ON/OFF the AC power source.
Interlock switch ............................................ Shuts off 24 V DC power line when the top cover and front cover are
opened.
Left cover switch .......................................... Shuts off 24 V DC power line when the left cover is opened.
Cassette size switch .................................... Detects the paper size dial setting of the paper setting dial.
Paper sensor 1............................................. Detects the presence of paper in the cassette.
Paper sensor 2............................................. Detects the presence of paper in the cassette.
Lift limit sensor ............................................. Detects activation of upper limit of the bottom plate in the cassette.
Registration sensor ...................................... Detects the timing of primary paper feed.
MP tray sensor............................................. Detects the presence of paper on the MP tray.
Duplex conveying sensor............................. Detects paper jam in the duplex section.
Paper exit sensor ......................................... Detects paper jam in the fuser/paper exit section.
Paper full sensor .......................................... Detects the paper full in the top tray.
Toner sensor M ............................................ Detects the toner density in the developing unit M.
Toner sensor C............................................. Detects the toner density in the developing unit C.
Toner sensor Y............................................. Detects the toner density in the developing unit Y.
Toner sensor K............................................. Detects the toner density in the developing unit K.
Right ID sensor ............................................ Measures image density for color calibration.
Left ID sensor............................................... Measures image density for color calibration.
Waste toner full sensor ................................ Detects the waste toner box being full.
Envelope switch ........................................... Detects the envelope mode setting.
2-2-4
2K8
21. Front cover open/close switch ..................... Detects open/close front cover.
22. Fuser thermistor........................................... Measures the heat roller temperature.
23. Polygon motor thermistor............................. Measures the polygon motor YK temperature.
2-2-5
2K8
(3) Motors
16
23
11
12
14
13
22
5
6
15
8
7
10
9
24
17
18
4
3
1
20
21
19
Machine left
2
Machine inside
Machine right
Figure 2-2-3 Motors
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
Paper feed motor ......................................... Drives the paper feed section.
Lift motor ...................................................... Operates the bottom plate in the cassette.
Polygon motor MC ....................................... Drives the polygon mirror.
Polygon motor YK ........................................ Drives the polygon mirror.
Drum motor M .............................................. Drives drum unit M.
Drum motor C .............................................. Drives drum unit C.
Drum motor Y............................................... Drives drum unit Y.
Drum motor K............................................... Drives drum unit K.
Developing motor MCY................................ Drives developing unit M, C and Y.
Developing motor K ..................................... Drives developing unit K and intermediate transfer unit.
Toner motor M.............................................. Replenishes the developing unit M with toner.
Toner motor C .............................................. Replenishes the developing unit C with toner.
Toner motor Y .............................................. Replenishes the developing unit Y with toner.
Toner motor K .............................................. Replenishes the developing unit K with toner.
Fuser motor.................................................. Drives fuser section and paper exit section.
Duplex motor................................................ Drives duplex section.
Main charger cleaning motor ....................... Drives main charger wire cleaning system.
LSU cleaning motor ..................................... Drives LSU dust shield glass cleaning system.
Developing fan motor 1................................ Cools the image formation section, engine PWB, main PWB and high
voltage PWB.
20. Developing fan motor 2................................ Cools the image formation section, engine PWB, main PWB and high
voltage PWB.
2-2-6
2K8
21.
22.
23.
24.
Power source fan motor............................... Cools the power source PWB.
Fuser fan motor 1......................................... Cools the fuser section.
Fuser fan motor 2......................................... Cools the fuser section.
Ozone fan motor .......................................... The exhaust gas of ozone.
2-2-7
2K8
(4) Other electrical components
7
14
13
9
10
11
12
2
5
4
8
6
3
15
1
Machine left
Machine inside
Machine right
Figure 2-2-4 Other electrical components
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
Paper feed clutch ......................................... Controls the paper cassette paper feed.
Registration clutch ....................................... Controls the secondary paper feed.
Intermediate clutch....................................... Controls the paper conveying at the conveying section.
Duplex clutch ............................................... Controls the paper conveying at the duplex section.
Developing clutch......................................... Detaches the drive transmission of developing units other than developing unit K at the time of B/W printing.
MP paper feed solenoid ............................... Controls the MPF bottom plate of the MP tray.
Duplex solenoid ........................................... Operates the change guide.
ID solenoid ................................................... Operates the ID sensors cleaning system.
Eraser lamp M.............................................. Eliminates the residual electrostatic charge on the drum. (Magenta)
Eraser lamp C .............................................. Eliminates the residual electrostatic charge on the drum. (Cyan)
Eraser lamp Y .............................................. Eliminates the residual electrostatic charge on the drum. (Yellow)
Eraser lamp K .............................................. Eliminates the residual electrostatic charge on the drum. (Black)
Fuser heater lamp........................................ Heats the heat roller.
Fuser thermal cutout .................................... Shuts off the power source to the fuser heater lamp when the heat roller
reaches extremely high temperature.
AC inlet ........................................................ Connects the AC power source.
2-2-8
2K8
2-3 Operation of the PWBs
2-3-1
Power source PWB
YC102
1
YC103
1 YC101
1
Figure 2-3-1 Power source PWB silk-screen diagram
Connector
YC101
Connected
to the AC
inlet and
power
switch.
Pin
1
Signal
LIVE
I/O
I
2
NEUTRAL
I
YC102
Connected
to the fuser
heater lamp.
1
NEUTRAL
O
2
3
N.C.
LIVE
O
YC103
Connected
to the
engine
PWB.
1
2
3
4
5
6
7
8
9
10
11
12
13
HEATREM
N.C.
ZCROSS
SLEEPN
+24V3
GND
GND
GND
GND
+24V1
+24V1
+24V1
+24V1
I
O
I
I
O
O
O
O
Voltage
120 V AC
220 - 240 V AC
120 V AC
220 - 240 V AC
120/0 V AC
220 - 240/0 V AC
120 V AC
220 - 240 V AC
24 V DC
0/3.3 V DC (pulse)
0/24 V DC
24 V DC
24 V DC
24 V DC
24 V DC
24 V DC
Description
AC power input
AC power input
Fuser heater lamp: On/Off
Not used
AC power output
Fuser heater lamp: On/Off
Not used
Zero-cross signal
Sleep mode signal: On/Off
24 V DC power source
Ground
Ground
Ground
Ground
24 V DC power source
24 V DC power source
24 V DC power source
24 V DC power source
2-3-1
2K8
2-3-2
Engine PWB
1
2
1
2
YC9
YC7
1 4
YC10GY
11
10
YC20
YC21
2
6
9
3
YC12
1
1
2
22
21
2
YC32
6
7
1
4
22
1
2
1
YC29
YC30
21
YC41
1
7
YC1
3
YC31
YC14
A1
B1
1
1
YC13
YC43
3
1
2YC5 YC6
1
5 1
5
A20
B20
5
YC2
1
2
1
YC16
26
27
U4
3 YC41
2
YC42
1
13
YC26
YC18
15
1
2 YC17
YC40 3
11 2
7
4
BK
1
2
YC27 YC37YC36 13 YC34
1
2
1
2
2 16
YC44
YC33
2
9
10
1
1
2
12
YC3
4
YC39 YW
3
4
2 BE 1 2
6
1 YC25 YC24 BE YC11 YC38
2 RD
GY
12
12
1 2
12
1
2
YC22 YC23 3YC15 2
2
YC28
1
2
BK
1
YW
4
1
YC19
1
Figure 2-3-2 Engine PWB silk-screen diagram
2-3-2
1
2
1 14
13
2K8
Connector
YC3
Connected
to the paper
feed motor,
intermediate clutch
and duplex
clutch
Pin
1
Signal
FEMOTRDYN
I/O
I
Voltage
0/3.3 V DC
Description
Paper feed motor ready signal
2
3
4
5
6
7
8
9
10
1
2
3
4
5
1
2
SPEEDSEL
FEMOTCLK
FEMOTREN
GND
+24V3
MIDCLDRN
+24V3
DUCLDRN
+24V3
+5V1
LEDREFL
GND
VOPL
VOSL
+5V1
LEDREFR
O
O
O
O
O
O
O
O
O
O
I
I
O
O
0/3.3 V DC
0/3.3 V DC (pulse)
0/3.3 V DC
24 V DC
0/24 V DC
24 V DC
0/24 V DC
24 V DC
5 V DC
Analog
Analog
Analog
5 V DC
Analog
Paper feed motor speed switch signal
Paper feed motor clock signal
Paper feed motor: On/Off
Ground
24 V DC power source
Intermediate clutch: On/Off
24 V DC power source
Duplex clutch: On/Off
24 V DC power source
5 V DC power source
Left ID sensor control signal
Ground
Left ID sensor detection signal
Left ID sensor detection signal
5 V DC power source
Right ID sensor control signal
3
4
5
1
2
3
GND
VOPR
VOSR
GND
REGPAP
+5V2
I
I
I
I
O
Analog
Analog
0/5 V DC
5 V DC
Ground
Right ID sensor detection signal
Right ID sensor detection signal
Ground
Registration sensor: On/Off
5 V DC power source
YC9
Connected
to the cassette size
switch
1
2
3
4
CAS2
CAS1
COM
CAS0
I
I
I
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
Cassette size switch (SW2): On/Off
Cassette size switch (SW1): On/Off
Ground
Cassette size switch (SW0): On/Off
YC10
Connected
to the developing fan
motor 1
1
2
+24V1
DLPFANDRN
O
O
24 V DC
0/12/24 V DC
24 V DC power source
Developing fan motor 1: Full speed/Half speed/Off
YC11
Connected
to the ozone
fan motor
1
2
+24V1
OZFANDRN
O
O
24 V DC
0/12/24 V DC
24 V DC power source
Ozone fan motor: Full speed/Half speed/Off
YC12
Connected
to the waste
toner full
sensor
1
2
3
4
LEDA
LEDK
PTRE
PTRC
O
O
I
O
5 V DC
0/5 V DC (pulse)
Analog
5 V DC
5 V DC power source
Waste toner full sensor (emitter)
Waste toner full sensor (receiver)
5 V DC power source
YC5
Connected
to the left ID
sensor
YC6
Connected
to the right
ID sensor
YC7
Connected
to the registration sensor
2-3-3
2K8
Connector
YC13
Connected
to the interlock switch
Pin
1
2
3
YC14
Connected
to the left
cover switch
1
2
3
+24V3
N.C.
+24V4
O
I
24 V DC
24/0 V DC
YC16
Connected
to the high
voltage
PWB
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
26
27
1
2
3
4
GND
GND
HVCLKK
HVCLKY
HVCLKC
HVCLKM
T2RREMN
MKCNT
BKSCNT
BKMCNT
MYCNT
BYSCNT
BYMCNT
MCCNT
BCSCNT
BCMCNT
MMCNT
BMSCNT
BMMCNT
CLCNT
T1MCNT
T1CCNT
T1YCNT
T1KCNT
T2CNT
+24V4
+24V4
STDUBN
STDUAN
STDUB
STDUA
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
0/3.3 V DC (pulse)
0/3.3 V DC (pulse)
0/3.3 V DC (pulse)
0/3.3 V DC (pulse)
0/3.3 V DC (pulse)
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
PWM
24 V DC
24 V DC
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
YC17
Connected
to the
duplex
motor
2-3-4
Signal
+24V1
N.C.
+24V2
I/O
O
I
Voltage
24 V DC
24/0 V DC
Description
24 V DC power source
Not used
24 V DC power source
Interlock switch: On/Off
24 V DC power source
Not used
24 V DC power source
Left cover switch: On/Off
Ground
Ground
Developing bias clock signal (Black)
Developing bias clock signal (Yellow)
Developing bias clock signal (Cyan)
Developing bias clock signal (Magenta)
Secondary transfer bias reverse signal
Main charger high voltage control voltage (Black)
Developing sleeve bias control voltage (Black)
Developing magnet bias control voltage (Black)
Main charger high voltage control voltage (Yellow)
Developing sleeve bias control voltage (Yellow)
Developing magnet bias control voltage (Yellow)
Main charger high voltage control voltage (Cyan)
Developing sleeve bias control voltage (Cyan)
Developing magnet bias control voltage (Cyan)
Main charger high voltage control voltage (Magenta)
Developing sleeve bias control voltage (Magenta)
Developing magnet bias control voltage (Magenta)
Cleaning bias control voltage
Primary transfer bias control voltage (Magenta)
Primary transfer bias control voltage (Cyan)
Primary transfer bias control voltage (Yellow)
Primary transfer bias control voltage (Black)
Secondary transfer bias control voltage
24 V DC power source
24 V DC power source
Duplex motor drive control signal (_B)
Duplex motor drive control signal (_A)
Duplex motor drive control signal (B)
Duplex motor drive control signal (A)
2K8
Connector
YC18
Connected
to the drum
motor M/C/
Y/K
YC19
Connected
to the power
source PWB
YC20
Connected
to the paper
exit PWB
YC21
Connected
to the
duplex conveying sensor and MP
tray sensor
YC22
Connected
to the toner
motor K
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
8
9
10
1
Signal
STMBN
STMAN
STMB
STMA
STCBN
STCAN
STCB
STCA
STYBN
STYAN
STYB
STYA
STKBN
STKAN
STKB
STKA
HEATREM
N.C.
ZCROSS
SLEEPN
+24V3
GND
GND
GND
GND
+24V1
+24V1
+24V1
+24V1
+3.3V2
FTHERM
PDIRN
EXITPAP
GND
FDFUL
FEEDOPN
FUFANDRN
+24V1
DUREVDRN
+3.3V2
I/O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
O
O
I
i
I
I
O
I
I
I
I
I
O
O
O
O
Voltage
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
24 V DC
0/3.3 V DC (pulse)
0/24 V DC
24 V DC
24 V DC
24 V DC
24 V DC
24 V DC
3.3 V DC
Analog
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/12/24 V DC
24 V DC
0/24 V DC
3.3 V DC
Description
Drum motor M drive control signal (_B)
Drum motor M drive control signal (_A)
Drum motor M drive control signal (B)
Drum motor M drive control signal (A)
Drum motor C drive control signal (_B)
Drum motor C drive control signal (_A)
Drum motor C drive control signal (B)
Drum motor C drive control signal (A)
Drum motor Y drive control signal (_B)
Drum motor Y drive control signal (_A)
Drum motor Y drive control signal (B)
Drum motor Y drive control signal (A)
Drum motor K drive control signal (_B)
Drum motor K drive control signal (_A)
Drum motor K drive control signal (B)
Drum motor K drive control signal (A)
Fuser heater lamp: On/Off
Not used
Zero-cross signal
Sleep mode signal: On/Off
24 V DC power source
Ground
Ground
Ground
Ground
24 V DC power source
24 V DC power source
24 V DC power source
24 V DC power source
3.3 V DC power source
Fuser thermistor detection voltage
Envelope switch: On/Off
Paper exit sensor: On/Off
Ground
Paper full sensor: On/Off
Front cover open/close switch: On/Off
Fuser fan motor 1: Full speed/Half speed/Off
24 V DC power source
Duplex solenoid: On/Off
3.3 V DC power source
2
3
4
5
6
GND
DUREGPAP
+3.3V2
GND
MPHANDS
I
O
I
0/3.3 V DC
3.3 V DC
0/3.3 V DC
Ground
Duplex conveying sensor: On/Off
3.3 V DC power source
Ground
MP tray sensor: On/Off
1
2
+24V3
TNMKDRN
O
O
24 V DC
0/24 V DC
24 V DC power source
Toner motor K: On/Off
2-3-5
2K8
Connector
YC23
Connected
to the toner
motor Y
Pin
1
2
Signal
+24V3
TNMYDRN
I/O
O
O
Voltage
24 V DC
0/24 V DC
Description
24 V DC power source
Toner motor Y: On/Off
YC24
Connected
to the toner
motor C
1
2
+24V3
TNMCDRN
O
O
24 V DC
0/24 V DC
24 V DC power source
Toner motor C: On/Off
YC25
Connected
to the toner
motor M
1
2
+24V3
TNMMDRN
O
O
24 V DC
0/24 V DC
24 V DC power source
Toner motor M: On/Off
YC26
Connected
to the developing clutch
K, developing motor K,
Registration
clutch and
paper feed
clutch
YC27
Connected
to the developing motor
MCY
YC28
Connected
to the lift
motor
2-3-6
1
DLPCLDRN
O
0/24 V DC
Developing clutch K: On/Off
2
3
4
5
6
7
8
9
10
11
12
13
1
2
3
4
5
6
7
1
2
+24V3
MOTKREV
DLPMOTKRDYN
SPEEDSEL
DLPMOTKCLK
DLPMOTKREN
GND
+24V3
REGCLDRN
+24V3
FEDCLDRN
+24V3
MOTREV
DLPMOTRDYN
SPEEDSEL
DLPMOTCLK
DLPMOTREN
GND
+24V3
LMOTDRN
GND
O
O
I
O
O
O
O
O
O
O
O
O
I
O
O
O
O
O
-
24 V DC
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC (pulse)
0/3.3 V DC
24 V DC
0/24 V DC
24 V DC
0/24 V DC
24 V DC
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC (pulse)
0/3.3 V DC
24 V DC
0/24 V DC
-
24 V DC power source
Developing motor K drive switch signal
Developing motor K ready signal
Developing motor K speed selection signal
Developing motor K clock signal
Developing motor K: On/Off
Ground
24 V DC power source
Registration clutch: On/Off
24 V DC power source
Paper feed clutch: On/Off
24 V DC power source
Developing motor MCY drive switch signal
Developing motor MCY ready signal
Developing motor MCY speed switch signal
Developing motor MCY clock signal
Developing motor MCY: On/Off
Ground
24 V DC power source
Lift motor: On/Off
Ground
2K8
Connector
YC29
Connected
to the APC
PWB Y,
APC PWB K
and polygon motor
YK
YC30
Connected
to the APC
PWB M,
APC PWB C
and polygon motor
MC
Pin
1
Signal
+3.3V1
I/O
O
Voltage
3.3 V DC
Description
3.3 V DC power source
2
3
4
5
6
7
8
9
LONBYN
ENBYN
VDOYP
VDOYN
GND
VREFY
THERMK
PDYN
O
O
O
O
O
I
I
0/3.3 V DC
0/3.3 V DC
LVDS
LVDS
Analog
Analog
10
11
12
13
14
15
16
17
+3.3V1
LONBKN
ENBKN
VDOKP
VDOKN
GND
VREFK
PDKN
O
O
O
O
O
O
I
APC PWB Y sample/hold signal
APC PWB Y laser enable signal
APC PWB Y video data signal (+)
APC PWB Y video data signal (-)
Ground
APC PWB Y control signal
LSU thermistor detection voltage
0/3.3 V DC (pulse) Horizontal synchronization signal
3.3 V DC
3.3 V DC power source
0/3.3 V DC
APC PWB K sample/hold signal
0/3.3 V DC
APC PWB K laser enable signal
LVDS
APC PWB K video data signal (+)
LVDS
APC PWB K video data signal (-)
Ground
Analog
APC PWB K control signal
Horizontal
synchronization signal
0/3.3 V DC (pulse)
18
POLCLK1
O
0/3.3 V DC (pulse) Polygon motor YK clock signal
19
20
21
22
1
POLRDYN1
POLONN1
GND
+24V3
+3.3V1
I
O
O
O
0/3.3 V DC
0/3.3 V DC
24 V DC
3.3 V DC
2
3
4
5
6
7
8
9
LONBMN
ENBMN
VDOMP
VDOMN
GND
VREFM
THERMC
PDMN
O
O
O
O
O
I
I
0/3.3 V DC
0/3.3 V DC
LVDS
LVDS
Analog
Analog
10
11
12
13
14
15
16
17
+3.3V1
LONBCN
ENBCN
VDOCP
VDOCN
GND
VREFC
PDCN
O
O
O
O
O
O
I
18
POLCLK0
O
19
20
21
22
POLRDYN0
POLONN0
GND
+24V3
I
O
O
Polygon motor YK ready signal
Polygon motor YK: On/Off
Ground
24 V DC power source
3.3 V DC power source
APC PWB M sample/hold signal
APC PWB M laser enable signal
APC PWB M video data signal (+)
APC PWB M video data signal (-)
Ground
APC PWB M control signal
LSU thermistor detection voltage
0/3.3 V DC (pulse) Horizontal synchronization signal
3.3 V DC
3.3 V DC power source
0/3.3 V DC
APC PWB C sample/hold signal
0/3.3 V DC
APC PWB C laser enable signal
LVDS
APC PWB C video data signal (+)
LVDS
APC PWB C video data signal (-)
Ground
Analog
APC PWB C control signal
Horizontal
synchronization signal
0/3.3 V DC (pulse)
0/3.3 V DC (pulse)
0/3.3 V DC
0/3.3 V DC
24 V DC
Polygon motor MC clock signal
Polygon motor MC ready signal
Polygon motor MC: On/Off
Ground
24 V DC power source
2-3-7
2K8
Connector
YC31
Connected
to the main
PWB
YC32
Connected
to the operation panel
PWB
2-3-8
Pin
A1
Signal
VDOMP
I/O
I
A2
A3
A4
A5
A6
VDOMN
VDOYP
VDOYN
GND
PDMN
I
I
I
O
A7
PDYN
O
A8
A9
A10
A11
A12
A13
GND
FPDATA
FPDIR
+3.3V1
+3.3V1
SO
I/O
I
O
O
O
A14
A15
A16
A17
A18
SDIR
EGIRN
+5V1
+5V1
+5V1
O
O
O
O
O
A19
A20
B1
B2
B3
B4
B5
B6
RESETN
GND
VDOCP
VDOCN
VDOCP
VDOCN
GND
PDCN
O
I
I
I
I
O
B7
PDKN
O
B8
B9
B10
B11
B12
B13
GND
N.C.
FPCLK
FPRSTN
+3.3V1
SI
I
I
O
O
B14
SCLN
O
B15
B16
B17
SBSY
VSYNC
EEDAT
O
O
I/O
B18
EECLK
O
Main PWB busy signal
PD mask control signal
0/3.3 V DC (pulse) EEPROM data signal
0/3.3 V DC (pulse) EEPROM clock signal
B19
GND
-
-
Ground
B20
1
2
3
4
5
6
7
GND
GND
FPCLK
FPDIR
FPDATA
+3.3V1
FPRSTN
+5V
0/3.3 V DC (pulse)
0/3.3 V DC
0/3.3 V DC
3.3 V DC
0/3.3 V DC
5 V DC
Ground
Ground
Operation panel PWB clock signal
Operation panel PWB communication direct signal
Operation panel PWB data signal
3.3 V DC power source
Operation panel reset signal
5 V DC power source
O
O
I/O
O
O
O
Voltage
LVDS
Description
APC PWB M video data signal (+)
LVDS
APC PWB M video data signal (-)
LVDS
APC PWB Y video data signal (+)
LVDS
APC PWB Y video data signal (-)
Ground
0/3.3 V DC (pulse) Horizontal synchronization signal
0/3.3 V DC (pulse) Horizontal synchronization signal
0/3.3 V DC
0/3.3 V DC
3.3 V DC
3.3 V DC
Ground
Operation panel PWB data signal
Operation panel PWB communication direct signal
3.3 V DC power source
3.3 V DC power source
0/3.3 V DC (pulse) Main PWB serial communication data signal
0/3.3 V DC
Main PWB communication direction signal
0/3.3 V DC
Engine interrupt signal
5 V DC
5 V DC power source
5 V DC
5 V DC power source
5 V DC
5 V DC power source
0/3.3 V DC
LVDS
LVDS
LVDS
LVDS
-
Main PWB reset signal
Ground
APC PWB C video data signal (+)
APC PWB C video data signal (-)
APC PWB K video data signal (+)
APC PWB K video data signal (-)
Ground
0/3.3 V DC (pulse) Horizontal synchronization signal
0/3.3 V DC (pulse) Horizontal synchronization signal
0/3.3 V DC
0/3.3 V DC
3.3 V DC
Ground
Not used
Operation panel PWB clock signal
Operation panel reset signal
3.3 V DC power source
0/3.3 V DC (pulse) Main PWB serial communication data signal
0/3.3 V DC (pulse) Main PWB clock signal
0/3.3 V DC
0/3.3 V DC
2K8
Connector
YC33
Connected
to the option
paper feeder
Signal
GND
OPSCLK
OPRDYN
OPSDI
OPSDO
OP5V
GND
OPSEL0
OPSEL1
OPSEL2
OP24
ERASEMDR
TNSENM
ERASECDR
TNSENC
ERASEYDR
TNSENY
EECLK
I/O
O
I
I
O
O
O
O
O
O
O
I
O
I
O
I
O
8
9
GND
EEDATA
I/O
Description
Ground
Paper feeder clock signal
Paper feeder ready signal
Paper feeder serial communication data signal
Paper feeder serial communication data signal
5 V DC power source
Ground
Paper feeder selection signal
Paper feeder selection signal
Paper feeder selection signal
24 V DC power source
Eraser lamp M: On/Off
Toner sensor M detection voltage
Eraser lamp C: On/Off
Toner sensor C detection voltage
Eraser lamp Y: On/Off
Toner sensor Y detection voltage
0/3.3 V DC (pulse) EEPROM clock signal
Ground
0/3.3 V DC (pulse) EEPROM data signal
10
11
12
13
14
1
2
+3.3V1
ERASEKDR
+3.3V2
TNSENK
DLPTHERM
MCHMOTA
MCHMOTB
O
O
O
I
I
O
O
3.3 V DC
0/24 V DC
3.3 V DC
Analog
Analog
24/0 V DC
24/0 V DC
3.3 V DC power source
Eraser lamp K: On/Off
3.3 V DC power source
Toner sensor K detection voltage
Developing thermistor detection voltage
Main charger cleaning motor: Fwd/Stop/(Rev)
Main charger cleaning motor: Rev/Stop/(Fwd)
YC37
Connected
to the LSU
cleaning
motor
1
2
LSUMOTA
LSUMOTB
O
O
24/0 V DC
24/0 V DC
LSU cleaning motor: Fwd/Stop/(Rev)
LSU cleaning motor: Rev/Stop/(Fwd)
YC38
Connected
to the power
source fan
motor
1
+24V1
O
24 V DC
24 V DC power source
2
PSFANDRN
O
0/12/24 V DC
Power source fan motor: Full speed/Half speed/Off
YC39
Connected
to the fuser
motor
1
2
3
4
1
2
STFUBN
STFUAN
STFUB
STFUA
+24V3
MPSOLDRN
O
O
O
O
O
O
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
0/24 V DC (pulse)
24 V DC
0/24 V DC
Fuser motor drive control signal (_B)
Fuser motor drive control signal (_A)
Fuser motor drive control signal (B)
Fuser motor drive control signal (A)
24 V DC power source
MP paper feed solenoid: On/Off
YC34
Connected
to the drum
relay signal
YC36
Connected
to the main
charger
cleaning
motor
YC40
Connected
to the MP
paper feed
solenoid
Pin
1
2
3
4
5
6
7
8
9
10
11
1
2
3
4
5
6
7
Voltage
0/5 V DC (pulse)
0/5 V DC
0/5 V DC (pulse)
0/5 V DC (pulse)
5 V DC
0/5 V DC
0/5 V DC
0/5 V DC
24 V DC
0/24 V DC
Analog
0/24 V DC
Analog
0/24 V DC
Analog
2-3-9
2K8
Connector
YC41
Connected
to the developing fan
motor 2
Pin
1
2
Signal
+24V1
DLPFANDRN
I/O
O
O
Voltage
24 V DC
0/12/24 V DC
Description
24 V DC power source
Developing fan motor 2: Full speed/Half speed/Off
YC43
Connected
to the ID
solenoid
1
2
+24V3
IDSOLDRN
O
O
24 V DC
0/24 V DC
24 V DC power source
ID solenoid: On/Off
YC44
Connected
to the fuser
fan motor 2
1
2
+24V3
SUBFANDRN
O
O
24 V DC
0/12/24 V DC
24 V DC power source
Fuser fan motor 2: Full speed/Half speed/Off
2-3-10
2K8
2-3-3
Drum relay PWB
1
YC13
4
YC11
1
2
1
7
8
3
YC12
1
YC10
4
1
2
1
YC8
7
8
3
YC9
1
YC7
2
4 1
YC1
14
13
YC5
1
7
2
8
1
3
YC6
1
YC4
4
YC2
1
2
1
7
8
3
YC3
Figure 2-3-3 Drum relay PWB silk-screen diagram
2-3-11
2K8
Connector
YC1
Connected
to the
engine
PWB.
YC2
Connected
to the drum
PWB K
YC3
Connected
to the drum
PWB K
YC4
Connected
to the developing PWB
K
YC5
Connected
to the drum
PWB Y
YC6
Connected
to the drum
PWB Y
YC7
Connected
to the drum
PWB C
2-3-12
Pin
1
2
3
4
5
6
7
Signal
ERASEMDR
TNSENM
ERASECDR
TNSENC
ERASEYDR
TNSENY
EECLK
I/O
I
O
I
O
I
O
I
Voltage
0/24 V DC
Analog
0/24 V DC
Analog
0/24 V DC
Analog
Description
Eraser lamp M: On/Off
Toner sensor M detection voltage
Eraser lamp C: On/Off
Toner sensor C detection voltage
Eraser lamp Y: On/Off
Toner sensor Y detection voltage
0/3.3 V DC (pulse) EEPROM clock signal
Ground
0/3.3 V DC (pulse) EEPROM data signal
8
9
GND
EEDATA
I/O
10
11
12
13
14
1
2
3
+3.3V1
ERASEKDR
+3.3V2
TNSENK
DLPTHERM
EEDATA
ERASEDR
EECLK
I
I
I
O
O
I/O
O
O
4
5
6
7
8
1
2
3
GND
+3.3V1
N.C.
DA1
DA0
GND
ERASEKDR
N.C.
O
O
O
O
-
3.3 V DC power source
Eraser lamp K: On/Off
3.3 V DC power source
Toner sensor K detection voltage
Developing thermistor detection voltage
EEPROM data signal
Eraser lamp K: On/Off
0/3.3 V DC (pulse) EEPROM clock signal
Ground
3.3 V DC
3.3 V DC power source
Not used
0/3.3 V DC
Data address signal
0/3.3 V DC
Data address signal
Ground
0/24 V DC
Eraser lamp K: On/Off
Not used
1
2
3
4
GND
TNSENK
+3.3V2
TH_DLP
I
O
I
Analog
3.3 V DC
Analog
1
2
3
EEDATA
ERASEDR
EECLK
I/O
O
O
0/3.3 V DC (pulse) EEPROM data signal
0/24 V DC
Eraser lamp Y: On/Off
0/3.3 V DC (pulse) EEPROM clock signal
4
5
6
7
8
1
2
3
GND
+3.3V1
N.C.
DA1
DA0
GND
ERASEYDR
N.C.
O
O
O
O
-
3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/24 V DC
-
Ground
3.3 V DC power source
Not used
Data address signal
Data address signal
Ground
Eraser lamp Y: On/Off
Not used
1
2
3
4
GND
TNSENY
+3.3V2
N.C.
I
O
-
Analog
3.3 V DC
-
Ground
Toner sensor Y detection voltage
3.3 V DC power source
Not used
3.3 V DC
0/24 V DC
3.3 V DC
Analog
Analog
0/3.3 V DC (pulse)
0/24 V DC
Ground
Toner sensor K detection voltage
3.3 V DC power source
Developing thermistor detection voltage
2K8
Connector
YC8
Connected
to the drum
PWB C
YC9
Connected
to the drum
PWB C
YC10
Connected
to the developing PWB
C
YC11
Connected
to the drum
PWB M
YC12
Connected
to the drum
PWB M
YC13
Connected
to the developing PWB
M
Pin
1
2
3
4
5
6
7
8
1
2
3
Signal
EEDATA
ERASEDR
EECLK
GND
+3.3V1
N.C.
DA1
DA0
GND
ERASECDR
N.C.
I/O
I/O
O
O
O
O
O
O
-
Voltage
0/3.3 V DC (pulse)
0/24 V DC
0/3.3 V DC (pulse)
3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/24 V DC
-
Description
EEPROM data signal
Eraser lamp C: On/Off
EEPROM clock signal
Ground
3.3 V DC power source
Not used
Data address signal
Data address signal
Ground
Eraser lamp C: On/Off
Not used
1
2
3
4
GND
TNSENC
+3.3V2
N.C.
I
O
-
Analog
3.3 V DC
-
Ground
Toner sensor C detection voltage
3.3 V DC power source
Not used
1
2
3
4
5
6
7
8
1
2
3
EEDATA
ERASEDR
EECLK
GND
+3.3V1
N.C.
DA1
DA0
GND
ERASMCDR
N.C.
I/O
O
O
O
O
O
O
-
0/3.3 V DC (pulse)
0/24 V DC
0/3.3 V DC (pulse)
3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/24 V DC
-
EEPROM data signal
Eraser lamp M: On/Off
EEPROM clock signal
Ground
3.3 V DC power source
Not used
Data address signal
Data address signal
Ground
Eraser lamp M: On/Off
Not used
1
2
3
4
GND
TNSENM
+3.3V2
N.C.
I
O
-
Analog
3.3 V DC
-
Ground
Toner sensor M detection voltage
3.3 V DC power source
Not used
2-3-13
2K8
YC4
1
Paper exit PWB
WE
2-3-4
3
1
YC6
PH1
WE
2
2
1
WE
YC2
1
2
PH2
YC3
2
WE
BE
10
1
9
1
YC1
YC5
2
Figure 2-3-4 Paper exit PWB silk-screen diagram
Connector
YC1
Connected
to the
engine
PWB.
YC2
Connected
to the fuser
fan motor 1
YC3
Connected
to the
duplex solenoid
2-3-14
Pin
1
2
3
4
5
6
7
8
9
10
1
2
Signal
+3.3V2
FTHERM
PDIRN
EXITPAP
GND
FDFUL
FEEDOPN
FUFANDRN
+24V1
DUREVDRN
+24V1
FUFANDRN
I/O
I
O
O
O
O
O
I
I
I
O
O
Voltage
3.3 V DC
Analog
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/3.3 V DC
0/12/24 V DC
24 V DC
0/24 V DC
24 V DC
0/12/24 V DC
Description
3.3 V DC power source
Fuser thermistor detection voltage
Envelope switch: On/Off
Paper exit sensor: On/Off
Ground
Paper full sensor: On/Off
Front cover open/close switch: On/Off
Fuser fan motor 1: Full speed/Half speed/Off
24 V DC power source
Duplex solenoid: On/Off
24 V DC power source
Fuser fan motor 1: Full speed/Half speed/Off
1
2
+24V1
DUREVDRN
O
O
24 V DC
0/24 V DC
24 V DC power source
Duplex solenoid: On/Off
2K8
Connector
YC4
Connected
to the fuser
thermistor
Pin
1
2
Signal
+3.3V1
FTHERM
I/O
O
I
Voltage
3.3 V DC
Analog
Description
3.3 V DC power source
Fuser thermistor detection voltage
YC5
Connected
to the front
cover open/
close switch
1
2
FEEDOPN
GND
I
-
0/3.3 V DC
-
Front cover open/close switch: On/Off
Ground
YC6
Connected
to the envelope switch
1
2
3
GND
PDIRN
+3.3V2
I
O
0/3.3 V DC
3.3 V DC
Ground
Envelope switch: On/Off
3.3 V DC power source
2-3-15
2K8
This page is intentionally left blank.
2-3-16
2-4-1
AC inlet
2 NEUTRAL
2
YC101
1 LIVE
1
Power source PWB
Power switch
YC103
1
2
3
4
5
6
7
8
9
10
11
12
13
YC19
1
2
3
4
5
6
7
8
9
10
11
12
13
YC18
HEATREM
NC
ZCROSS
SLEEPN
+24V3
GND
GND
GND
GND
+24V1
+24V1
+24V1
+24V1
STYA
12
STYB
11
STYAN
10
STYBN
9
12
11
10
9
ASTK
16
STKB
15
STKAN
14
STKBN
13
16
15
14
13
STCA
STCB
STCAN
STCBN
1
2
YC102
LIVE
3
2 NEUTRAL
1
YC38
Duplex
solenoid
1 1
2 2
3 3
Fuser
thermistor
Fuser heater lamp
Fuser thermal cutout
YC21
YC22 YC23
Front cover
open/close switch
Fuser zener PWB
YC6
YC5
Paper full sensor
Paper exit sensor
YC40
Engine PWB
Discharger brush
YC2
YC4
Paper exit PWB
YC1
YC20
YC26
YC3
Paper sensor 2
Paper sensor 1
YC17
4
3
2
1
4
3
2
1
STMA
4
STMB
3
STMAN
2
STMBN
1
4
3
2
1
8
7
6
5
8
7
6
5
9
8
7
6
5
4
3
9
8
7
6
5
4
3
2 2
1 1
STDUA
STDUB
STDUAN
STDUBN
ASTK
STKB
STKAN
STKBN
STYA
STYB
STYAN
STYBN
STCA
STCB
STCAN
STCBN
STMA
STMB
STMAN
STMBN
STDUA
STDUB
STDUAN
STDUBN
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1 1
2 2
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
Paper feed
clutch
1 1 Registration
2 2 clutch
+24V3
GND
DLPMOTKREN
DLPMOTKCLK
SPEEDSEL
DLPMOTKRDYN
MOTKREV
+24V3
DLPCLDRN
+24V3
1 1 MPSOLDRN
2 2
1
2
3
4
5
6
7
1
2
3
4
5
6
7
Developing
motor K
10
9
8
7
6
5
4
3
2
1
Developing
clutch K
1 1
2 2
MP paper
feed solenoid
1 1
2 2
YC24
Toner motor C
+24V3
1 1 TNMCDRN
2 2
Toner motor Y
+24V3
1 1
TNMYDRN
2 2
Toner motor K
+24V3
1 1
TNMKDRN
2 2
Cassette
size switch
YC9
YC7
Toner motor M
+24V3
1 1
TNMMDRN
2 2
YC39
YC11
Waste toner
full sensor
YC10
Lift limit
sensor
YC27
Transfer roller unit
M
C
Y
K
Left cover
switch
Intermediate transfer unit
Interlock
switch
YC14
YC13
YC28
YC12
7
6
5
4
3
2
1
7
6
5
4
3
2
1
LMOTDRN
GND
YC16
YC3
High voltage PWB
Transfer cleaning unit
+24V3
MIDCLDRN
+24V3
GND
FEMOTREN
FEMOTCLK
SPEEDSEL
FEMOTRDYN
1
2
3
4
5
6
7
1
2
3
4
1
2
3
4
1
2
3
4
5
6
7
Lift motor
1 1
2 2
Duplex clutch
Intermediate
clutch
1 1
2 2
Paper feed motor
6
5
4
3
2
1
Fuser
motor
21/23 ppm (500-sheet) model/
26/28 ppm (500-sheet) model
YC37
Main charger
cleaning motor
MCHMOTA
1 1 MCHMOTB
2 2
YC25 YC36
EEPROM
LSU cleaning
motor
LSUMOTA
1 1
LSUMOTB
2 2
+24V3
GND
DLPMOTREN
DLPMOTCLK
SPEEDSEL
DLPMOTRDYN
MOTREV
STFUA
4 STFUB
3
STFUAN
2
1 STFUBN
4
3
2
1
1 1
2 2
+24V3
10 10 DUCLDRN
9 9
8 8
7 7
6
5
4
3
2
1
Developing
motor MCY
1
2
3
4
Duplex
motor
+24V1
1 1
PSFANDRN
2 2
+24V3
13 13
FEDCLDRN
12 12
+24V3
11 11
10 10 REGCLDRN
DUREVDRN
+24V1
FUFANDRN
FEEDOPN
FDFUL
GND
EXITPAP
PDIRN
FTHERM
+3.3V2
1
2
3
4
Drum
motor M
+24V1 1 1
DUREVDRN
2 2
10
9
8
7
6
5
4
3
2
1
4
3
2
1
1 1
2 2
3 3
Drum
motor C
+3.3V1
1 1
FTHERM
2 2
1 1 FEEDOPN 1 1
GND 2 2
2 2
+5V2
3 3
REGPAP
2 2
GND 1 1
CAS0
COM
CAS1
CAS2
1 1
2 2
3 3
27/26
25/24
23/22
21/20
19/18
17/16
15/14
13/12
11/10
9/8
7/6
5/4
3/2
1
Drum
motor M
+24V1 1 1
FUFANDRN
2 2
GND
1 1
PDIRN
2 2
+3.3V2
3 3
3 3
2 2
1 1
MPHANDS
6 6
GND
5 5
+3.3V2 4 4
1 1
2 2
3 3
MP tray
sensor
1 1
2 2
3 3
4
3
2
1
1
2
3
4
+24V1
1 1
DLPFANDRN 2 2
Developing
fan motor 1
+24V1
+24V2
+24V3
+24V4
+24V4/+24V4
T2CNT/T1KCNT
T1YCNT/T1CCNT
T1MCNT/CLCNT
BMMCNT/BMSCNT
MMCNT/BCMCNT
BCSCNT/MCCNT
BYMCNT/BYSCNT
MYCNT/BKMCNT
BKSCNT/MKCNT
T2RREMN/HVCLKM
HVCLKC/HVCLKY
HVCLKK/GND
GND
Drum
motor M
Power source
fan motor
Fuser fan
motor 1
Envelope
switch
DUREGPAP
GND 3 3
+3.3V2 2 2
1 1
1 1
2 2
3 3
Duplex
conveying
sensor
Registration
sensor
1
2
3
4
+24V1
1 1
OZFANDRN 2 2
Ozone fan
motor
LEDA
LEDK
PTRE
PTRC
1/2
3/4
5/6
7/8
9/10
11/12
13/14
15/16
17/18
19/20
21/22
23/24
25/26
27
1
2
3
4
5
6
7
1
2
3
4
5
6
7
(1) Wiring diagram
2-4-1
Appendixes
2-4 Appendixes
2K8
PD PWB Y
+3.3V1
1
PDN(Y)
2
3
4
GND
APC PWB Y
1
2
3
4
YC1
YC2
1
2
3
4
5
6
7
8
9
PDYN
1
2
3
4
5
6
7
8
9
+3.3V1
LONBYN
ENBYN
VDOYN
VDOYP
GND
VREFY
1
2
3
4
5
6
7
8
9
YC30
YC29
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
PD PWB K
APC PWB K
YC1
YC2
YC1
YC5
YC3
YC4
YC1
PD PWB M
YC2
Memory card
socket
YC2
Main PWB
PD PWB C
YC2
YC1
+3.3V1
1
PDN(M)
2
3
GND
4
1
2
3
4
APC PWB C
+3.3V1
1 PDN(C) 1
2 THERM2 2
3
3
GND
4
4
APC PWB M
YC1
Network
interface
(LAN)
USB
interface
USB
memory
slot (HOST)
Optional
interface
(KUIO)
1
2
3
4
5
6
7
8
9
+3.3V1
LONBCN
ENBCN
VDOCN
VDOCP
GND
VREFC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
+3.3V1
LONBMN
ENBMN
VDOMN
VDOMP
GND
VREFM
THERMC
PDMN
2
3
+3.3V1
1
1
PDN(K)
2 THERM1 2
3
3
GND
4
4
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
10
11
12
13
14
15
16
10
11
12
13
14
15
16
Polygon
motor YK
Polygon motor
thermistor
1
2
3
4
5
1
2
3
4
5
POLCLK1
POLRDYN1
POLONN1
GND
+24V3
18
19
20
21
22
+3.3V1
LONBKN
ENBKN
VDOKN
VDOKP
GND
VREFK
THERMK
PDKN
17 17
17 17
PDCN
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
Expand memory
socket (DIMM)
ID solenoid
Left ID sensor
YC5
YC1
Right ID sensor
YC6
GND/GND
GND/RESETN
EECLK /+5V1
EEDAT /+5V1
VSYNC /+5V1
SBSY / EGIRN
SCKN/SDIR
SI/SO
+3.3V1/+3.3V1
FPRSTN/+3.3V1
FPCLK/FPDIR
N.C/FPDATA
GND/GND
PDKN/PDYN
PDCN/PDMN
GND/GND
VDOKN/VDOYN
VDOKP/VDOYP
VDOCN/VDOMN
VDOCP/VDOMP
2
1
B1 / A1
B2 / A2
B3 / A3
B4 / A4
B5 / A5
B6 / A6
B7 / A7
B8 / A8
B9 / A9
B10/A10
B11/A11
B12/A12
B13/A13
B14/A14
B15/A15
B16/A16
B17/A17
B18/A18
B19/A19
B20/A20
YC6
1
2
+24V1
INSFANDRN
+24V1
SUBFANDRN
Developing
fan motor 2
Fuser fan motor 2
Polygon
motor MC
YC2
YC43
1 1 +24V3
2 2 IDSOLDRN
1
2
3
4
5
18
19
20
21
22
18
19
20
21
22
18
19
20
21
22
POLCLK0
POLRDYN0
POLONN0
GND
+24V3
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
+5V1
LEDREFL
GND
VOPL
VOSL
1
2
3
4
5
1
2
3
4
5
+5V1
LEDREFR
GND
VOPR
VOSR
Operation panel PWB
Engine PWB
Temperature
sensor
Humidity
sensor
OP5V
OP24V
11
10
9
8
7
6
5
4
3
2
1
YC33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
YC34
YC32
YC15
GND/GND
RESETN/GND
+5V1/EECLK
+5V1/EECLK
+5V1/VSYNC
EGIRN/SBSY
SDIR/SCKN
SO/SI
+3.3V1/+3.3V1
+3.3V1/FPRSTN
FPDIR/FPCLK
FPDATA/N.C +24V3
GND/GND
PDYN/PDKN
PDMN/PDCN
GND/GND
VDOYN/VDOKN +5V1
VDOYP/VDOKP
VDOMN/VDOCN
VDOMP/VDOCP
YC31
1
2
YC44
1
2
3
4
YC35
1
2
A20/B20
A19/B19
A18/B18
A17/B17
A16/B16
A15/B15
A14/B14
A13/B13
A12/B12
A11/B11
A10/B10
A9 / B9
A8 / B8
A7 / B7
A6 / B6
A5 / B5
A4 / B4
A3 / B3
A2 / B2
A1 / B1
1
2
1
2
YC41
1
2
3
4
5
1
2
3
4
5
6
7
1
2
3
4
1
2
3
4
+3.3V2
GND
RFDATA
RFCLK
4
3
2
1
4
3
2
1
7
6
5
4
3
2
1
+5V1
FPRSTN
+3.3V1
FPDATA
FPDIR
FPCLK
GND
7
6
5
4
3
2
1
2-4-2
11
10
9
8
7
6
5
4
3
2
1
OP24V
OPSEL2
OPSEL1
OPSEL0
GND
OP5V
OPSDO
OPSDI
OPRDYN
OPSCLK
GND
ERASEMDR
TNSENM
ERASECDR
TNSENC
ERASEYDR
TNSENY
EECLK
GND
EEDATA
+3.3V1
ERASEKDR
+3.3V2
TNSENK
DLPTHERM
1 YC1
2
3
4
5
6
7
8
9
10
11
12
13
14
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
1
8
1
2
3
8
1
3
2
1
1
2
3
4
GND
TNSEN1
+3.3V2
TH_DLP
EEDAT
ERASEDR
EECLK
GND
+3.3V1
N.C
DA1
DA0
YC10
1
2
1
2
3
4
Developing unit M
Developing unit C
Toner sensor K
Eraser
lamp K
(Without developing thermistor)
Toner sensor Y
(With developing thermistor)
+3.3V2
1
TNSEN1
2
GND
3
4
Developing unit K
1
2
3
4
Zener
PWB K
GND
1
ERASEDR1
2
+3.3V2
1
TNSEN1
2
GND
3
TH_DLP
4
Developing unit K
Developing
PWB K
Drum unit M
Drum unit C
Drum unit Y
1
2
Grid
Drum unit K
Drum PWB K
EEPROM
GND 1 1 GND
TNSENY 2 2 TNSEN1
+3.3V2 3 3 +3.3V2 Developing
PWB Y
4 4
YC7
GND
TNSENK
+3.3V2
TH_DLP
1
2
3
4
8
3
2
1
1
8
1
1
2
3
YC4
YC12
YC11
YC9
YC8
8
3
2
1
1
8
1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
GND 1 1
TNSENC 2 2
+3.3V2 3 3
4 4
YC13
GND 1 1
TNSENM 2 2
+3.3V2 3 3
4 4
Drum relay PWB
YC6
YC5
EEDAT
ERASEDR
EECLK
GND
+3.3V1
N.C
DA1
DA0
YC2
Paper feeder
(Option)
YC2
2K8
2K8
(2) Repetitive defects gauge
First occurrence of defect
31 mm (1 1/4") Rear registration roller
50 mm (1 15/16") Front registration roller
50 mm (1 15/16") Developing roller
59 mm (2 5/16") Transfer roller
79 mm (3 1/8") Press roller
82 mm (3 1/4") Heat roller
98 mm (3 7/8") Drum
2-4-3
2K8
(3) Maintenance parts list
120 V AC model
Maintenance part name
Name used in service manual
Maintenance kit MK-580
Name used in parts list
MK-580/MAINTENANCE KIT (OPTION)
Part No.
Alternative part
Fig.
No.
Ref.
No.
1702K87US0
072K87US
15
-
Retard roller
RETARD ROLLER ASSY
-
-
Paper feed roller assembly
HOLDER FEED ASSY SP
-
-
Developing unit Y
DV-560 US (Y)
-
-
Developing unit K
DV-560 US (K)
-
-
Developing unit C
DV-560 US (C)
-
-
Developing unit M
DV-560 US (M)
-
-
Fuser unit
FK-580(U)
-
-
Drum unit
DK-580
-
-
Intermediate transfer unit
TR-580
-
-
MP paper feed roller
ROLLER M/P ASSY /43487B0027 A4
-
-
220 - 240 V AC model
Maintenance part name
Name used in service manual
Maintenance kit MK-580
Retard roller
Name used in parts list
MK-580/MAINTENANCE KIT (OPTION)
Part No.
Alternative part
Fig.
No.
Ref.
No.
1702K88NL0
072K88NL
15
-
RETARD ROLLER ASSY
-
-
Paper feed roller assembly
HOLDER FEED ASSY SP
-
-
Developing unit Y
DV-560(Y)
-
-
Developing unit K
DV-560(K)
-
-
Developing unit C
DV-560(C)
-
-
Developing unit M
DV-560(M)
-
-
Drum unit
DK-580
-
-
Fuser unit
FK-580(E)
-
-
Intermediate transfer unit
TR-580
-
-
MP paper feed roller
ROLLER M/P ASSY /43487B0027 A4
-
-
2-4-4
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