Okidata C9200, C9400 MAINTENANCE MANUAL

Download

Page 1

Oki Data CONFIDENTIAL

C9400/C9200 Color LED Page Printer

MAINTENANCE MANUAL

ODA/OEL/INT

2002-12-10 Rev.6

41388601TH Rev.6 1 / 142

Page 2

Document Revision History

Oki Data CONFIDENTIAL

Rev.No. Date

No.

Corrected items

Page Description of change

Person in

charge 1 2000-12-05 ISSUE EM3 Murakami 2 2000-12-13 8 Correction of errors in K Yamazaki

the parts list 3 2001-05-15 CN11 Kasuya 4 2001-10-12 K Yamazaki 5 2002-11-27 K Yamazaki 6 2002-12-10 NP34 Ueda

41388601TH Rev.6 2 /

Page 3

Oki Data CONFIDENTIAL

PREFACE

This maintenance manual provides procedures and techniques for the troubleshooting, maintenance, and repair of C9400/C9200.

This manual is written for maintenance personnel, but it should always be accompanied with the C9400/ C9200 User’s Manual for procedures for handling and operating C9400/C9200. For repairing each component of C9400/C9200, see the Troubleshooting manual.

[Notices] The contents of this manual are subject to change without prior notice. Although reasonable efforts have been taken in the preparation of this manual to assure its accuracy, this manual may still contain some errors and omissions. OKI will not be liable for any damage caused or alleged to be caused, by the customer or any other person using this maintenance manual to repair, modify, or alter C9400/C9200 in any manner.

[Warning] Many parts of C9400/C9200 are very sensitive and can be easily damaged by improper servicing. We strongly suggest that C9400/C9200 be serviced by OKI’s authorized technical service engineers.

41388601TH Rev.6 3 /

Page 4

Oki Data CONFIDENTIAL

1. SPECIFICATIONS ............................................................................................ 6

1.1 Basic System Configuration............................................................................................. 6

1.2 Printer Engine Specifications ........................................................................................... 7

1.3 Option Configuration ........................................................................................................ 8

1.4 Specifications................................................................................................................... 9

2. PARTS REPLACEMENT................................................................................11

2.1 Precautions in Replacing Parts...................................................................................... 11

2.2 Parts Layout................................................................................................................... 13

2.3 Replacing Parts..............................................................................................................20

2.3.1 Top cover.......................................................................................................... 21

2.3.2 LED Assy/ LED Assy spring ............................................................................. 22

2.3.3 Top cover unit................................................................................................... 23

2.3.4 Control panel Assy/ Control panel bezel/ LED control PWB/ Toner sensor/

Stack full sensor/ Control panel tape harness/ Eject roller ............................... 24

2.3.5 Top cover handle/ Tope cover latch/ Top cover latch spring............................ 25

2.3.6 Eject guide Assy ............................................................................................... 26

2.3.7 Cassette Assy/ Blind cover/ Side cover R Assy ............................................... 27

2.3.8 Feed rollers....................................................................................................... 28

2.3.9 Left side cover .................................................................................................. 29

2.3.10 Face-up tray ..................................................................................................... 30

2.3.11 Front cover ....................................................................................................... 31

2.3.12 Rear cover........................................................................................................ 32

2.3.13 Multipurpose tray Assy/ Multipurpose tray cover Assy/ Links/

Multipurpose tray top cover/ Multipurpose tray drive gear................................ 33

2.3.14 Drum contact Assys.......................................................................................... 34

2.3.15 Registration roller Assy (A)/ Registration drive gear (A)................................... 35

2.3.16 Registration roller Assy (B)............................................................................... 36

2.3.17 Registration clutch, Registration motor Assy.................................................... 37

2.3.18 Cooling fan ....................................................................................................... 38

2.3.19 Color registration sensor Assy.......................................................................... 39

2.3.20 Duplex guide Assy............................................................................................ 40

2.3.21 Electrical chassis/ Electrical chassis cooling fan.............................................. 41

2.3.22 Printer engine controller PWB.......................................................................... 42

2.3.23 Printer unit chassis........................................................................................... 43

2.3.24 Entrance cassette sensor actuator................................................................... 44

2.3.25 Entrance sensor PWB...................................................................................... 45

2.3.26 Entrance MT sensor actuator and Entrance belt sensor actuator.................... 46

2.3.27 Main motor fan/ Fuser eject roller..................................................................... 47

2.3.28 Eject sensor Assy............................................................................................. 48

2.3.29 Fuser latching handle (L).................................................................................. 49

2.3.30 Belt motor Assy ................................................................................................ 50

2.3.31 Fuser latching handle (R)................................................................................. 51

2.3.32 Main motor Assy............................................................................................... 52

2.3.33 Contact Assy/ Side plate Assy.......................................................................... 53

2.3.34 Low voltage power supply................................................................................ 54

2.3.35 High voltage power supply ............................................................................... 55

2.3.36 Main feed Assy................................................................................................. 56

2.3.37 Fuser unit.......................................................................................................... 57

2.3.38 Belt unit............................................................................................................. 58

2.3.39 Duplex unit........................................................................................................ 59

2.3.40 CU Assy............................................................................................................ 60

41388601TH Rev.6 4 /

Page 5

Oki Data CONFIDENTIAL

3. Adjustment .................................................................................................... 62

3.1 Maintenance Menu and Its Functions ............................................................................ 62

3.2 Short Plug Settings ........................................................................................................ 63

3.3 Printing Singly Using Controller-Equipped Printer ......................................................... 63

3.4 Adjustment after Part Replacement ............................................................................... 64

3.5 Color Balance Adjustment ............................................................................................. 65

3.6 EEPROM Replacement after SWA Board and K73 Board Replacement ...................... 67

4. Regular Maintenance .................................................................................... 68

4.1 Parts to be Replaced Regularly ..................................................................................... 68

4.2 Cleaning......................................................................................................................... 68

4.3 Cleaning of LED Lens Array .......................................................................................... 68

4.4 Cleaning of Pick-up Roller ............................................................................................. 68

5. TROUBLESHOOTING PROCEDURES .........................................................69

5.1 Tips for Troubleshooting ................................................................................................ 69

5.2 Check Points before Correcting Image Problems.......................................................... 69

5.3 Tips for Correcting Image Problems .............................................................................. 69

5.4 Preparation for Troubleshooting .................................................................................... 70

5.5 Troubleshooting Flow..................................................................................................... 70

5.5.1 LCD Message List ............................................................................................ 71

5.5.2 LCD message troubleshooting ......................................................................... 79

5.5.3 Image troubleshooting...................................................................................... 90

6. WIRING DIAGRAM...................................................................................... 102

6.1 Resistance Check ........................................................................................................ 102

6.2 Parts Layout on Boards ............................................................................................... 107

7. Parts List...................................................................................................... 111

7.1 Printer Unit Parts List ................................................................................................... 111

7.2 C9400/C9200 Finisher for OEL/INT Parts Layout........................................................ 131

41388601TH Rev.6 5 /

Page 6

Job

offset

LED Head

Junction Board

Pulse Motors

Engine Controller

Low-Voltage

Power Unit

Fuser Unit

High-Voltage

Power Unit

2nd/3rd T r ay/

Large-Capacity

Tray

Duplex Unit

Belt Unit

<Sensors, Switches and Thermistors>

Paper carrier sensors

Paper size detection

Fuser temperature detection

Ambient temperature and humidity detection

Toner remaining detection

Color registration sensor

ID, belt and fuser checks

C-ID

Unit

M-ID

Unit

Y-ID

Unit

K-ID

Unit

C ID

Heater

M ID

Y ID

K ID

Belt

MT/

Registration

Hopping

Geared

motor

DC motor

Operator Panel

Centronics

USB

IDE

HDD

FAN

Ethernet

ROM DIMM × 3

SDRAM DIMM

× 4

Controller

Block

1. SPECIFICATIONS

1.1 Basic System Configuration

The basic system configuration of C9400/C9200 is illustrated in Figure 1.1.

Oki Data CONFIDENTIAL

Figure 1.1

41388601TH Rev.6 6 /

Page 7

1.2 Printer Engine Specifications

The inside of the printer is composed of the followings:

• Electrophotographic Processor

• Paper Paths

• Controller Block (CU and PU)

• Operator Panel

• Power Units (High-Voltage Unit and Low-Voltage Unit) Figure 1-2 shows the printer configuration.

Oki Data CONFIDENTIAL

Figure 1.2

41388601TH Rev.6 7 /

Page 8

1.3 Option Configuration

The followings are available as options on C9400/C9200. (1) 2nd Tray/ 3rd Tray

(2) Duplex Unit

Oki Data CONFIDENTIAL

(3) Large-Capacity Tray

(4) Expansion Memory 64/128/256MB

(5) Internal Hard Disk

(6) Ethernet Board

41388601TH Rev.6 8 /

Page 9

(7) Finisher Unit (for C9400/C9200 OEL/INT Version)

1.4 Specifications

Oki Data CONFIDENTIAL

(1) Dimensions Height: 460mm Width: 666mm Length: 626mm (2) Weight 72kg (3) Paper Type: Ordinary paper and transparencies (Recommended: ML OHP01)

Size: Postal card, Legal 13" or 14", Executive, A4, A5, B5, A6, A3 A3-Nobi, B4

(Only the 1st tray and the front feeder support A6 and postal card sizes.)

Weight: 1st tray 55 kg to 90 kg (64 to 105g/m2)

Front feeder 55 kg to 140 kg (64 to 163g/ m2)

(4) Print Speed Color: 21 pages per minute (Transparency: 5 pages per minute)

Monochrome: 26 pages per minute (Transparency: 15 pages per minute)

Postal Card, Label, Thick Paper: 10 pages per minute (5) Resolution 600 × 600 dots per inch (6) Power Input 100VAC ±10% (7) Power Consumption Peak: 1400W Normal Operation: 550W (5% duty)

Idle: 150W Power Saving Mode: 50W (8) Frequency 50Hz or 60Hz ± 2% (9) Noise Operating: 54 dB (without Second tray)

Standby: 45 dB Power Saving: 43 dB

(10) Consumable Life Toner Cartridge: 7,500 pages (5% duty)

Large-Capacity Toner Cartridge: 15,000 pages (5% duty)

(in each of Y, M, C and K)

Image Drum: 39,000 pages (5% duty, Continuous printing)

(in each of Y, M, C and K)

(11) Parts Replaced Periodically Fuser Unit Assy: Every 80,000 pages

Belt Cassette Assy: Equivalent of 80,000 pages (3P/J) Transfer Belt cartridge: 60,000 prints

41388601TH Rev.6 9 /

Page 10

(12) Temperatures and Relative Humidities Temperature

Temperature (ºF) RemarkTemperature (ºC)

Oki Data CONFIDENTIAL

Operating 50 to 89.6 10 to 32

Non-Operating 32 to 109.4 0 to 43 Power-off Storage (Max. One Year) -14 to 109.4 -10 to 43 With drum and toner Transport (Max. One Month) -20 to 122 -29 to 50 With drum and without toner Transport (Max. One Month) -20 to 122 -29 to 50 With drum and toner

17 to 27ºC (Temperatures to assure full color print quality)

Humidity

Relative Humidity (%) Max. Wet-Bulb Temperature (ºC) Remark

Operating 20 to 80 25 50 to 70%

(Humidities to assure full color print quality) Non-Operating 10 to 90 26.8 Power-off Storage 10 to 90 35 Transport 10 to 90 40

(13 Printer Life 1,000,000 pages (on a A4 basis) or five years

41388601TH Rev.6 10 /

Page 11

2. PARTS REPLACEMENT

This section describes the procedure for replacing the parts, assemblies and units in the field. The replacing procedure is given for detachment. To attach, use the reverse procedure.

2.1 Precautions in Replacing Parts

(1) Before replacing the parts, be sure to remove the CA cable and the interface cable.

(a) To remove the AC cable, always use the following procedure.

1 Flip the power switch of the printer off (to “O”). 2 Pull the AC inlet plug of the AC cable out of the AC receptable. 3 Remove the AC cable and the interface cable from the printer.

(b) To connect the printer again, always use the following procedure.

1 Connect the AC cable and the interface cable to the printer. 2 Insert the AC inlet plug into the AC receptacle. 3 Flip the power switch of the printer on (to “I”).

Oki Data CONFIDENTIAL

Disconnect

(2) Do not disassemble the printer so long as it operates properly. (3) Minimize the disassembly. Do not detach parts other than those shown in the replacing

(4) For maintenance applications, use designated tools. (5) Follow the order instructed to disassemble the printer. Incorrect order may damage the

(6) Small parts such as screws and collars tend to get lost, so temporarily place and fix them in (7) When handling ICs and circuit boards such as microprocessors, ROMs and RAMs, do not (8) Do not place the printed circuit boards directly on the printer or the floor.

Connect

procedure.

parts. their original positions. use gloves that likely to have static.

41388601TH Rev.6 11 /

Page 12

[Maintenance Tools] Table 2-1 lists tools necessary to replace the units.

Table 2-1 Maintenance Tools

Oki Data CONFIDENTIAL

No.

7 1

No. 1-100 Philips screwdriver

No. 2-200 Philips screwdriver, Magnetized

No. 3-100 screwdriver

No. 5-200 screwdriver

Digital multimeter

Pliers

Handy cleaner

LED Head cleaner P/N 4PB4083-2248P001

High voltage probe

Q' ty Place of use RemarksService Tools

2~2.5 mm screws

3~5 mm screws

Cleans LED head

41388601TH Rev.6 12 /

Page 13

2.2 Parts Layout

Oki Data CONFIDENTIAL

Figure 2.1

41388601TH Rev.6 13 /

Page 14

[Top Cover Assy]

Oki Data CONFIDENTIAL

Figure 2.2

41388601TH Rev.6 14 /

Page 15

[Printer Unit-1/2]

Oki Data CONFIDENTIAL

Figure 2.3

41388601TH Rev.6 15 /

Page 16

[Printer Unit-2/2]

Oki Data CONFIDENTIAL

Figure 2.4

41388601TH Rev.6 16 /

Page 17

[Cassette Guide Assy (L), (R)]

Oki Data CONFIDENTIAL

Figure 2.5

41388601TH Rev.6 17 /

Page 18

Oki Data CONFIDENTIAL

Figure 2.6

41388601TH Rev.6 18 /

Page 19

[Duplex Unit]

Oki Data CONFIDENTIAL

Figure 2.7

41388601TH Rev.6 19 /

Page 20

2.3 Replacing Parts

This section describes how to replace the parts and assemblies illustrated below.

41531301 41515110

Print Engine Controller PWB (2.3.22) 41502304 × 4 LED Assy (2.3.2) 40737401 Power-Unit AC-DC Switching (115V) (2.3.34) 40737501 Power-Unit AC-DC Switching (230V) (2.3.34) 40737601 HV Power Supply (2.3.35) 41531402, 41531404 Fuser Unit (2.3.37) 41531502 Belt Unit (2.3.38) 41178202 Duplex Unit (2.3.39)

41480901 Printer NIP

41483001 Printer Unit

41481001 Unit-Lower-Frame (2.3.36)

41500101 Insurator 41483701 Main Cooling Fan Assy (2.3.18) 2381018P0001 HV Tape Harness

41484101 Electrical Chassis (2.3.21)

41483801 Main Motor Assy (2.3.32) 41483902 Belt Motor Assy (2.3.30)

41489001 Plate Assy-Side (2.3.33) 41493002 Multipurpose Tray (2.3.13) 41276502 Rear Cover (2.3.12) 41277402 Left Side Cover (2.3.9) 41481202 Right Side Cover (2.3.7) 41276402 Front Cover (2.3.11) 41277502 Face Up Tray (2.3.10) 41504401 Top Cover 41484402 Top cover (2.3.1) 40866212 Control panel Bezel (2.3.4)

41493002 Multipurpose Tray Assy (2.3.13)

41484902 Cassette Assy (2.3.7) 41277902 Cover-Blind (2.3.7) 41481701 Feed-Roller (2.3.8) 40863801 Plate-Side (2.3.21)

41483102 Printer Chassis (2.3.23) 41483202 Regist Roller Assy (A) (2.3.15) 41483301 Regist Roller Assy (B) (2.3.16) 41483401 Registration Motor Assy (2.3.17) 41187101 Registration Clutch (2.3.17) 41486601 Duplex Guide Assy (2.3.20)

41481301 Main Feed Assy (2.3.36) 41515801 PCE-Size Sence (2.3.36) 22011000P0140 IMSA-9714N-14A (2.3.36)

41490702 Electrical Chassis Cooling Fan

40841402 Fuser Latching Handle (R) (2.3.31) 41628301 Fuser Latching Handle Spring (2.3.31)

40850201 Contact Assy (2.3.33)

41045802 × 2 Link (2.3.13) 41486202 MT Tray Cover Assy (2.3.13) 41278002 MT Top Cover (2.3.13) 40325101 MT Drive Gear (2.3.13)

Oki Data CONFIDENTIAL

40841302 Fuser Latching Handle (L) (2.3.29) 41628301 Fuser Latching Handle Spring (2.3.29) 40841601 Entrance Sensor Actuator #1 (2.3.24) 41578501 Entrance Sensor Actuator #2 (2.3.26) 40841801 Entrance Sensor Actuator #3 (2.3.26) 41621801 Registration Shutter Solenoid Assy 41488801 Registration Shutter 41589401 Registration Shutter Spring 41641701 Fuser Driver Gear-A (2.3.27) 41095901 Fuser Exit Roller (2.3.27) 4PP4043-4489P001 Fuser Exit Roller Bushing (L) (2.3.27) 4PP4076-3949P001 Fuser Exit Roller Bushing (R) (2.3.27) 41189701 × 4 Drum Contact Assy (2.3.14) 41258301 Entrance Sensor PWB (2.3.25) 41491001 Color Registration Sensor Assy (2.3.19) 41073601 Exit Sensor Assy (2.3.28) 41483701 Main Motor FAN Assy (2.3.27)

40861001 × 8 LED Assy Spring (2.3.2) 41257902 LED Control PWB (Y71) (2.3.4) 41349801 Stack Full Sensor (2.3.4) 41349301 × 4 Eject Roller (2.3.4) 41484501 Control Panel Assy (2.3.4) 2381005P0015 Control Panel Tape Harness (2.3.4) 41514101 LED Harness K 41514102 LED Harness Y 41514103 LED Harness M 41514104 LED Harness C 41328402 Top Cover Handle (2.3.5) 41277602 Top Cover Latch (2.3.5) 40861401 × 2 Top Cover Latch Spring (2.3.5) 41484701 Eject Guide Assy (2.3.6)

41388601TH Rev.6 20 /

Page 21

2.3.1 Top cover (1) Open the top cover Assy.

(2) Remove the nine screws 1 to detach the top cover 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 21 /

Page 22

2.3.2 LED Assy/ LED Assy spring (1) Open the top cove 1.

(2) Remove the three cables, and unhook the LED Assy 2 at the two places to demount it (The

two springs 3 become detached together with the LED Assy 2).

(3) Detach the LED connector 4.

When assembling, attach the LED connector 4 to the LED head and insert the flat cable.

Oki Data CONFIDENTIAL

41388601TH Rev.6 22 /

Page 23

2.3.3 Top cover unit (1) Remove the top cover (see section 2.3.1).

(2) Remove the rear cover (see section 2.3.12). (3) Remove the front cover (see section 2.3.11). (4) Remove the electrical chassis (see section 2.3.21). (5) Unscrew the screws 1 and 2 to remove the limiters (F) 3 and (R) 4. (6) Remove the inner shaft 5, then the top cover unit 8 (The inner springs 6 and 7 become

detached).

Oki Data CONFIDENTIAL

41388601TH Rev.6 23 /

Page 24

Oki Data CONFIDENTIAL

2.3.4 Control panel Assy/ Control panel bezel/ LED control PWB/ Toner sensor/ Stack full sensor/ Control panel tape harness/ Eject roller

(1) Detach the control panel bezel 1. (2) Remove the screws 2 to demount the control panel 3. (3) Detach the control panel tape harness 4. (4) Remove the screws 6, unhook the connector 7 and demount the LED control PWB 8. (5) Unscrew the screws 9 to remove the plate 0. (6) Disengage the claw to demount the toner sensor A. (7) Demount the stacker full sensor B. (8) Unscrew the eject sensor bracket C, D.

41388601TH Rev.6 24 /

Page 25

2.3.5 Top cover handle/ Tope cover latch/ Top cover latch spring (1) Remove the two screws 1 to detach the top cover handle 2 and disengage the top cover

latch 3 (The two top cover latch springs 4 become detached).

Oki Data CONFIDENTIAL

41388601TH Rev.6 25 /

Page 26

2.3.6 Eject guide Assy (1) Remove the seven screws 1 to detach the eject guide Assy 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 26 /

Page 27

2.3.7 Cassette Assy/ Blind cover/ Side cover R Assy (1) Detach the cassette Assy 1.

(2) Disengage the blind cover 2 at the two places to detach it. (3) Unscrew the two screws to remove the stopper 4. (4) Disengage the claw on the left support of the side cover R to detach the side cover R.

Oki Data CONFIDENTIAL

41388601TH Rev.6 27 /

Page 28

2.3.8 Feed rollers (1) Remove the cassette.

(2) Unlatch and demount the feed rollers 1.

Oki Data CONFIDENTIAL

41388601TH Rev.6 28 /

Page 29

2.3.9 Left side cover (1) Remove the four screws 1 to detach the left side cover 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 29 /

Page 30

2.3.10 Face-up tray (1) Open the face-up tray in the arrow direction and move the links 2 out of engagement (at two

places each of the links) to detach the face-up tray 1.

Oki Data CONFIDENTIAL

41388601TH Rev.6 30 /

Page 31

2.3.11 Front cover (1) Open the top cover 1.

(2) Disengage the claws and remove the blind cover 2. (3) Unscrew the six screws 4 to detach the front cover 3.

Oki Data CONFIDENTIAL

41388601TH Rev.6 31 /

Page 32

2.3.12 Rear cover (1) Open the top cover 1,

(2) Remove the five screws 3 and 4 to detach the rear cover 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 32 /

Page 33

Oki Data CONFIDENTIAL

2.3.13 Multipurpose tray Assy/ Multipurpose tray cover Assy/ Links/ Multipurpose tray top cover/ Multipurpose tray drive gear

(1) Remove the rear cover (see section 2.3.12). (2) Remove the front cover (see section 2.3.11). (3) Unscrew the three screws 1 to detach the multipurpose tray top cover 2. (4) Unscrew the two screws 3 and remove the connector to detach the multipurpose tray 4. (5) Disengage 4 and 5 to detach the multipurpose tray cover Assy 5 (the links 7 become

detached).

(6) Unhook and detach the multipurpose tray drive gear 8.

Engagement

41388601TH Rev.6 33 /

Page 34

2.3.14 Drum contact Assys (1) Insert a flatblade screwdriver between the printer case and the drum contact Assy 1 to

demount the drum contact Assy.

Oki Data CONFIDENTIAL

41388601TH Rev.6 34 /

Page 35

2.3.15 Registration roller Assy (A)/ Registration drive gear (A) (1) Remove the front cover (see section 2.3.11).

(2) Remove the rear cover (see section 2.3.12). (3) Remove the multipurpose tray (see section 2.3.13). (4) Unscrew the four screws 1 to demount the registration roller Assy (A) 2. (5) Remove the E ring 3 to detach the registration gear (A) 4.

Oki Data CONFIDENTIAL

41388601TH Rev.6 35 /

Page 36

2.3.16 Registration roller Assy (B) (1) Remove the cassette Assy.

(2) Remove the front cover (see section 2.3.11). (3) Remove the rear cover (see section 2.3.12). (4) Remove the electrical chassis (see section 2.3.21). (5) Remove the registration clutch (see section 2.3.17). (6) Remove the printer chassis (see section 2.3.23). (7) Unscrew the four screws and pull out the registration Assy (B) 2 in the arrow direction.

Oki Data CONFIDENTIAL

41388601TH Rev.6 36 /

Page 37

2.3.17 Registration clutch, Registration motor Assy (1) Remove the left side cover (see section 2.3.9).

(2) Remove the electrical chassis (see section 2.3.21). (3) Remove the connector and the E ring 1, then screws 3 and 4, and then the earth plate 5. (4) Remove the connector and unscrew the two screws 6 to demount the registration motor Assy

Oki Data CONFIDENTIAL

41388601TH Rev.6 37 /

Page 38

2.3.18 Cooling fan (1) Unhook the connector 1, and remove the screws 2 and the cooling fan 3.

Oki Data CONFIDENTIAL

air direction

41388601TH Rev.6 38 /

Page 39

2.3.19 Color registration sensor Assy (1) Remove the two screws 1 and the three connectors to demount the color registration sensor

Assy 2.

(2) Remove the earth plate B 3.

Oki Data CONFIDENTIAL

41388601TH Rev.6 39 /

Page 40

2.3.20 Duplex guide Assy (1) Unlatch and demount the duplex guide Assy 1.

(2) Remove the springs 2.

Oki Data CONFIDENTIAL

Main chassis (L side)

41388601TH Rev.6 40 /

Page 41

2.3.21 Electrical chassis/ Electrical chassis cooling fan (1) Unscrew the five screws 1 and two screws 2 to remove the plate A 3.

(2) Unscrew the thirty-one screws 4 to remove the shield plate B 5. (3) Remove the printer engine controller PWB (see section 2.3.22). (4) Unscrew the eleven screws 6 to detach the electrical chassis 7. (5) Unscrew the two screws 8 to demount the electrical chassis cooling fan 9.

Oki Data CONFIDENTIAL

air direction

41388601TH Rev.6 41 /

Page 42

2.3.22 Printer engine controller PWB (1) Remove the rear cover (see section 2.3.12).

(2) Remove the electrical chassis and the electrical cooling fan (see section 2.3.21). (3) Remove the five screws 1 and all the connectors to demount the printer engine controller

PWB 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 42 /

Page 43

2.3.23 Printer unit chassis (1) Unscrew the screw 1 and remove the AC switch Assy 2.

(2) Remove the four black screws 3 and six screws 4 to detach the printer unit chassis 5.

Oki Data CONFIDENTIAL

41388601TH Rev.6 43 /

Page 44

2.3.24 Entrance cassette sensor actuator (1) Remove the printer unit chassis (see section 2.3.12).

(2) Turn over the main chassis. (3) Remove the two clamps with tweezers to demount the entrance cassette sensor actuator 1.

Oki Data CONFIDENTIAL

Main chassis

41388601TH Rev.6 44 /

Page 45

2.3.25 Entrance sensor PWB (1) Remove the registration roller Assy (B) (see section 2.3.16).

(2) Remove the two screws 1 to demount the entrance sensor PWB 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 45 /

Page 46

2.3.26 Entrance MT sensor actuator and Entrance belt sensor actuator (1) Remove the entrance sensor PWB (R71) (see section 2.3.25).

(2) Unlatch and detach the entrance MT sensor actuator 1. (3) Unlatch and detach the entrance belt actuator 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 46 /

Page 47

2.3.27 Main motor fan/ Fuser eject roller (1) Unscrew the two screws 1 to remove the fan Assy 2.

(2) Unscrew the fuser eject roller contact 4. (3) Remove the fuser drive gear 5. (4) Unscrew the fuser drive gear Assy 8. (5) Remove the screws and washers 0 to demount the fan A. (6) Unlatch and detach the fuser eject roller bearing (L) B and fuser eject roller C.

Oki Data CONFIDENTIAL

41388601TH Rev.6 47 /

Page 48

2.3.28 Eject sensor Assy (1) Remove the fuser eject roller (see section 2.3.27).

(2) Remove the screw 1 and connector 2 to demount the (red/blue) eject sensor Assy 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 48 /

Page 49

2.3.29 Fuser latching handle (L) (1) Remove the latching handle spring 1.

(2) Unscrew the fuser latching handle (L) 2, 3.

Oki Data CONFIDENTIAL

41388601TH Rev.6 49 /

Page 50

2.3.30 Belt motor Assy (1) Remove the fuser latching handle (R) (see section 2.3.21).

(2) Unscrew the two screws 1 to detach the two connector 2. (3) Demount the belt motor Assy 3.

Oki Data CONFIDENTIAL

41388601TH Rev.6 50 /

Page 51

2.3.31 Fuser latching handle (R) (1) Remove the printer unit chassis (see section 2.3.23).

(2) Remove the E ring 1. (3) Remove the fuser latching handle spring 2 to detach the fuser latching handle (R) 3.

Oki Data CONFIDENTIAL

41388601TH Rev.6 51 /

Page 52

2.3.32 Main motor Assy (1) Remove the belt motor Assy (see section 2.3.30).

(2) Remove all the connector. (3) Remove the two screws 1 to demount the main motor Assy 2.

Oki Data CONFIDENTIAL

41388601TH Rev.6 52 /

Page 53

2.3.33 Contact Assy/ Side plate Assy (1) Remove the printer unit chassis (see section 2.3.23).

(2) Remove the four screws 1 to detach the side plate Assy 2. (3) Remove the three screws 3 to detach the contact Assy 4.

Oki Data CONFIDENTIAL

41388601TH Rev.6 53 /

Page 54

2.3.34 Low voltage power supply (1) Remove the printer unit chassis (see section 2.3.23).

(2) Unhook the connector 1. (3) Remove the eight screws 2 to demount the low voltage power supply 5.

Oki Data CONFIDENTIAL

41388601TH Rev.6 54 /

Page 55

2.3.35 High voltage power supply (1) Remove the contact Assy (see section 2.3.33).

(2) Unhook the connector of the high voltage power supply 1. (3) Remove the two screws 2 to detach the high voltage power supply 1 and the tape harness

Oki Data CONFIDENTIAL

41388601TH Rev.6 55 /

Page 56

2.3.36 Main feed Assy (1) Remove the printer unit chassis (see section 2.3.23).

(2) Remove the low voltage power supply and high voltage power supply (see sections 2.3.34

and 2.3.35). (3) Unscrew the five screws 1 to remove the lower plate 2. (4) Unscrew the six screws 3 to demount the main feed Assy 4. (5) Unscrew the screws 5 to detach the cable and then the PCB size board 6. (6) Unscrew the screw 7 to detach the duplex connector 8. (7) Unscrew the screws 9 to detach the second tray connector 0.

Oki Data CONFIDENTIAL

41388601TH Rev.6 56 /

Page 57

2.3.37 Fuser unit (1) Open the top cover 1.

(2) Push the right and left fuser levers (blue) 2 in the arrow direction to detach the fuser unit 3.

Oki Data CONFIDENTIAL

41388601TH Rev.6 57 /

Page 58

2.3.38 Belt unit (1) Open the top cover 1.

(2) Remove the I/D unit. (3) Push the lever (blue) 2 in the arrow direction, raise the handle (blue) and detach the belt unit

Oki Data CONFIDENTIAL

41388601TH Rev.6 58 /

Page 59

2.3.39 Duplex unit (1) Remove the cassette Assy, the front cover and the front cover inner buffle.

(2) Unlatch the rear at the right and left and pull the duplex unit 1 toward the front.

Oki Data CONFIDENTIAL

41388601TH Rev.6 59 /

Page 60

2.3.40 CU Assy (1) Pulling out Control Board

1. Loosen the two screws 1.

2. Pull the control board 2 out.

3. Place the control board 2 on a flat table.

(2) Detaching Fan

1. Remove the connector 3.

2. Remove the two screws 4.

3. Detach the fan 5.

Oki Data CONFIDENTIAL

41388601TH Rev.6 60 /

Page 61

Oki Data CONFIDENTIAL

(3) Demounting SWA Board

1. Remove the three screws 6 and screw 7 to detach the fan bracket 8.

2. Remove the screw 9 and four screws 0 to detach the plate support A and the guide rail AB.

3. Remove the two screws C to detach the guide rail BD.

4. Remove the two screws E and two screws F and the plate -FG(Centro) G, then demount the SWA board H.

41848502 (Board Assy .-cu[Maintenance]) Attached screw.

41388601TH Rev.6 61 /

Page 62

3. ADJUSTMENT

Adjustments are carried out by key operations on the operator panel. The maintenance menu is included in the general menu of this printer. Choose the maintenance

menu for adjustment.

3.1 Maintenance Menu and Its Functions

The general menu has the category, MAINTENANCE MENU. The items adjustable in this menu are shown on the next page.

Maintenance Menu

Oki Data CONFIDENTIAL

4. REGULAR MAINTENANCE

4.1 Parts to be Replaced Regularly

It is recommended that a user should replace the parts below regularly according to the replacement standard. (If not replaced, print quality is not assumed or it may result in a failure.)

Oki Data CONFIDENTIAL

Part Name

Large-capacity Toner Cartridge

Toner Cartridge

ID Cartridge

Fuser Unit

Belt Unit

The above regular part replacement is performed by a user.

4.2 Cleaning

The inside and outside of this printer should be cleaned with wastes and hand cleaner, if necessary.

Note:

Do not touch the Image drum terminal, LED lens array and LED head connectors.

Time for Replacement

When the message “Toner Low” is displayed.

When the message “Drum Life” is displayed.

When the message “Fuser Life” is displayed.

When the message “Belt Life” is displayed.

Replacement Condition

After 15,000 copies have been printed.

After 7,500 copies have been printed.

After 26,000 copies have been printed. (at 3P/J)

After 80,000 copies have been printed.

After 80,000 copies have been printed. (at 3P/J)

Adjustment after Replacement

Replace the Toner cartridge.

Reset the drum counter after drum replacement.

Reset the fuser counter.

Reset the belt counter.

4.3 Cleaning of LED Lens Array

When a longitudinal white band or stripes (that is, void or light printing) appear on a printed paper surface, the LED lens array should be cleaned.

Note:

The LED head cleaner must be used to clean the LED lens array. (The LED head cleaner is included in the Toner cartridge box.)

White band, white stripes (Void or light printing)

4.4 Cleaning of Pick-up Roller

When papers are not fed normally, the Pick-up roller should be cleaned.

Note:

Clean it with such as soft clothes and alcohol. Be cautious not to damage the roller surface.

41388601TH Rev.6 68 /

Page 69

5. TROUBLESHOOTING PROCEDURES

5.1 Tips for Troubleshooting

(1) Check the basic check points covered in the user’s manual. (2) Gather as much information on the problem from the customer as possible. (3) Perform inspections in conditions close to those in which the problem had occurred.

5.2 Check Points before Correcting Image Problems

(1) Is the printer being run in proper ambient conditions? (2) Have the consumables toner and image drum cartridges been replaced properly? (3) Is the paper normal? See paper specifications section.

Oki Data CONFIDENTIAL

(4) Has the image drum cartridge been loaded properly?

5.3 Tips for Correcting Image Problems

(1) Do not touch, or bring foreign matter into contact with the image drum surface. (2) Do not expose the image drum to direct sunlight. (3) Keep hands off the fuser unit as it is heated during operation. (4) Do not expose the image drum to light for longer than 5 minutes at room temperature.

41388601TH Rev.6 69 /

Page 70

5.4 Preparation for Troubleshooting

(1) Operator panel display

The failure status of this printer is indicated on the LCD (liquid crystal display) of the Operator panel. Take the proper corrective action according to the message displayed on the LCD.

5.5 Troubleshooting Flow

If a problem should develop in this printer, troubleshoot in the following procedure.

Problem

Oki Data CONFIDENTIAL

Problem that results in LCD message indication

Image problem (and a problem that does not result in LCD message indication.)

Troubleshoot based on the LED message list. See 5.5.1

Perform troubleshooting with the troubleshooting flow chart. See 5.5.2

Perform troubleshooting with the troubleshooting flow chart. See 5.5.3

41388601TH Rev.6 70 /

Page 71

5.5.1 LCD Message List The printer indicates a Service Call Error message on the LCD as shown below, detecting an

unrecoverable error. Service Call

nnn : Error

Note:

nnn is an error code.

When the Service Call message is displayed, the error information corresponding to the error code appears on the lower line of the LCD. The meaning and solutions of each error code are listed in the Table 5-1-1.

Table 5-1-1 Operator Alarms (1/6)

Message Cause Error Description Solutions

Service Call 001: Error ~ 011: Error Service Call 020: Error

Service Call 030: Error

Service Call 031: Error

Service Call 032: Error

Service Call 033: Error

Service Call 034: Error

Service Call 035: Error

Service Call 036: Error

Service Call 037: Error

Service Call 038: Error

CPU Exception

CU ROM Hash Check Error 1

CU Slot1 DIMM RAM Check Error

CU Slot2 DIMM RAM Check Error

CU Slot3 DIMM RAM Check Error

CU Slot4 DIMM RAM Check Error

RAM Configuration Error. The CU RAM installation or derwas not followed.

Slot1 RAM Spec Error. The CU RAM Slot1

DIMM specification is not supported.

Slot2 RAM Spec Error. The CU RAM Slot2 DIMM specification is not supported.

Slot3 RAM Spec Error. The CU RAM Slot3 DIMM specification is notsupported.

Slot4 RAM Spec Error. The CU RAM Slot4 DIMM specification is notsupported.

Is the error message displayed again? Is the error message displayed again?

Is the program ROM DIMM installed properly? Can the printer recover from the error by replacing the program ROM DIMM?

Is the concerned RAM DIMM installed properly? Can the printer recover from the error by replacing the RAM DIMM?

Is the installation order followed? Can the printer recover from the error by

replacing the RAM DIMMs?

Is the RAM DIMM a genuine part? Is the concerned RAM DIMM installed properly? Can the printer recover from the error by replacing the RAM DIMM?

Yes

Turn the printer off/on. Replace the SWA board.

Yes

(The EEPROM needs replacement.)

Re-install the program ROM DIMM.

Yes

Replace the program ROM DIMM. Replace the SWA board.

(The EEPROM needs replacement.) Re-install the concerned RAM DIMM.

Replace the RAM DIMM.

Yes

Replace the SWA board.

(The EEPROM needs replacement.)

Re-install the concerned RAM DIMM.

Yes

Replace the RAM DIMM.

Replace the SWA board. (The EEPROM needs replacement.)

Re-install the concerned RAM DIMM.

Yes

Replace the RAM DIMM.

Replace the SWA board. (The EEPROM needs replacement.)

Re-install the concerned RAM DIMM.

Replace the RAM DIMM.

Yes

Replace the SWA board.

(The EEPROM needs replacement.)

Correct the installation order.

Yes

Replace the RAM DIMMs.

Replace the SWA board. (The EEPROM needs replacement.)

Use a genuine RAM DIMM.

Re-install the concerned RAM DIMM.

Replace the RAM DIMM.

Yes

Replace the SWA board.

(The EEPROM needs replacement.) Use a genuine RAM DIMM.

No No

Re-install the concerned RAM DIMM. Replace the RAM DIMM.

Yes

Replace the SWA board.

(The EEPROM needs replacement.) Use a genuine RAM DIMM.

No No

Re-install the concerned RAM DIMM. Replace the RAM DIMM.

Yes

Replace the SWA board.

(The EEPROM needs replacement.) Use a genuine RAM DIMM.

No No

Re-install the concerned RAM DIMM. Replace the RAM DIMM.

Yes

Replace the SWA board.

(The EEPROM needs replacement.)

Oki Data CONFIDENTIAL

41388601TH Rev.6 71 /

Page 72

Table 5-1-1 Operator Alarms (2/6)

Message Cause Error Description Solutions

Service Call 040: Error

Service Call 041: Error

Service Call 050: Error

Service Call 051: Error

Service Call 063: Error

Service Call 070: Error

Service Call 072: Error

Service Call 073: Error ~ 075: Error

Service Call 090:Error

Service Call 091: Error

Service Call 092: Error

Service Call 093: Error

Service Call 094: Error

Service Call 100/100:Error

Service Call 102: Error

Service Call 103: Error

Service Call 104: Error

Service Call 105: Error

CU EEPROM Error

U Flash Error.

On-CU-board Flash ROM Error

Operator Panel Error

CU Fan Error. On-CU-board CPU

Cooling Fan Problem

Network Comm.Error. CU ~ NIC H/W I/F

Problem

CANT_HAPPEN. PS F/W Problem Detection

Engine Communication Error

PU ~ CU I/F Error

Video Overrun Detect

Error detected at Staple-Motor in the

Finisher. Error detected at

Tray-Elevator-Motor in the Finisher.

Error detected at Ignition-Belt-Motor of

bin#2 in the Finisher. Error detected at

Jogging-Motor in the Finisher.

Error detected at Main-Feed-Motor in the

Finisher. Error detected at Engine ROM Checksum when

turned on. Error detected at Engine

RAM Read/Write when turned on.

Error detected at Engine SRAM Read/Write when

turned on. Error detected at Engine

EEPROM Checksum when turned on.

EEPROM not detected when turned on.

Can the printer recover from the error by replacing the EEPROM on the CU board?

Does the error message appear again? Yes Replace the SWA board.

Does the error message appear again? Ye s See the flowchart for the problems with

Is the on-CU-board connector connected properly?

Can the printer recover from the error by replacing the fan?

Is the network board installed properly? Can the printer recover from the error by

replacing the network board?

Is it recovered by turning the printer off/on. No Replace the SWA board.

Is the CU Assy installed properly? Can the printer recover from the error by

replacing the SWA board?

Is the CU Assy installed properly? Can the printer recover from the error by

replacing the SWA board?

1) Is the error message displayed? Ye s

2) Does the error repeat?

1) Is the error message displayed? Ye s Turn off/on the printer.

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

Does the error repeat? No

Does the error repeat? Yes Replace the engine control board (K73).

No EEPROM? Does the error repeat?

YesNoReplace the EEPROM. (Settings of the

user must be restored on the new.) Replace the SWA board.

(The EEPROM needs replacement.)

no LCD message displayed.

Connect the connector properly.

Yes

Replace the fan.

Replace the SWA board. (The EEPROM needs replacement.)

Install the network board properly.

Replace the network board.

Yes

Replace the SWA board.

(The EEPROM needs replacement.)

Install the CU Assy properly.

Yes

Replace the SWA board. (The EEPROM needs replacement.)

Replace the PU board.

Install the CU Assy properly.

Yes

Replace the SWA board. (The EEPROM needs replacement.)

Turn off/on the printer.

Yes

Replace the Stapler-Motor in the Finisher.

Ye s Replace the

Finisher.

Yes Turn off/on the printer. Ye s Replace the

the Finisher.

Yes Turn off/on the printer. Ye s Replace the

Finisher.

Yes Turn off/on the printer. Ye s Replace the

Finisher. Replace the PU board.

Yes

Replace the engine control board (K73).

Yes

Confirm the existence of EEPROM. Without it, mount an EEPROM. Replace the engine control board (K73).

Yes

Tray-Elevator-

Ignition-Belt-Motor of bin#2

Jogging-Motor

Main-Feed-Motor

Oki Data CONFIDENTIAL

Motor in the

in the

41388601TH Rev.6 72 /

Page 73

Oki Data CONFIDENTIAL

Table 5-1-1 Operator Alarms (3/6)

Message Cause Error Description Solutions

Service Call 106: Error

Service Call 120: Error

Service Call 121: Error

Service Call 122: Error

Service Call 123: Error

Service Call 124: Error

Service Call 125: Error

Service Call 130: Error

Service Call 131: Error ~ 134: Error

Service Call 140: Error ~ 142: Error

Service Call 150: Error ~ 153: Error

Service Call 154: Error

Service Call 155: Error

Service Call 160: Error ~ 163: Error

Service Call 170: Error 171: Error 174: Error 175: Error

Service Call 172: Error 176: Error

Service Call 173: Error 177: Error

Error detected at Engine Control Logic.

Error detected at cooling fan for Engine PCB (PCB-K73).

Error detected at two Power Unit cooling fans. /Error detected at Power Unit temperature rise. /Error detected at Charge output or Interface signals in Highvoltage Power Unit.

Error detected at fan for a heater exhaust gas.

Inappropriate ambient RH detected by a sensor.

Inappropriate ambient temp. detected by a sensor.

Error detected at the MT home position.

Temperature rise at the LED head detected.

No LED head unit detected when turning on the printer or closing the cover.

Error detected with the D located at appropriate position.

Fuse in the ID unit has not been blown.

Fuse in the Belt unit has not been blown.

Fuse in the Fuser unit has not been blown.

Error detected by Toner sensor.

Short or open circuit detected at the Fusert hermistor. (H or L temperature error)

High temperature error detected at Thermistor.

Low temperature error detected at Thermistor.

Does the error repeat? Yes

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Is the LED head mounted properly?

3) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat? Is the ID unit mounted properly? Yes Confirm the cable connection, or

Is the Belt unit mounted properly?

Is the Fuser unit mounted properly? Yes Confirm the cable connection, or

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does the error repeat?

Replace the engine control board (K73).

Turn off/on the printer.

Yes Yes

Refer fig.5.5.1 A power supply-related error.

Turn off/on the printer.

Yes Yes

Refer fig.5.5.1 A power supply-related error.

Turn off/on the printer.

Yes Yes

Refer fig.5.5.1 A power supply-related error.

Yes

Turn off/on the printer.

Yes

Replace the RH sensor. Turn off/on the printer.

Yes

Replace the temperature sensor.

Yes

Turn off/on the printer.

Yes

Replace the MT.

Yes

Turn off the printer, leave it for 30 min and then turn it on again.

Yes

Replace the LED head unit.

Yes

Verify the installation of the LED head.

Yes

Turn off/on the printer.

Yes

Replace the LED head Assy.

Yes

Turn off/on the printer.

Yes

Replace the Drum Assy.

replace the Engine board.

Yes

Confirm the cable connection, or replace the Engine board.

replace the Engine board.

Yes

Replace Toner sensor or Assy (Y71-PWB).

Yes

Same as the above.

Yes

Turn off/on the printer.

Yes

Replace the Thermistor and turn off the printer. Leave it for 30 min.

Yes

Turn off/on the printer.

Yes

Replace the Thermistor and turn off the printer. Leave it for 30 min.

Yes

Turn off/on the printer.

Yes

Replace the Thermistor or heater and turn off the printer.

41388601TH Rev.6 73 /

Page 74

Table 5-1-1 Operator Alarms (4/6)

Message Cause Error Description Solutions

Service Call 181: Error ~ 185: Error

Service Call 186: Error

Close Cover 310: CCCC CoverOpen

(* = A4, B4 etc.)

Check Fuser 320: Fuser Error

Check Belt 330: Belt Error

Check Drum 340~343: Drum Error

Install New Drum

350: Y Drum Life 351: M Drum Life 352: C Drum Life 353: K Drum Life

Install Duplex Unit 360: No Duplex unit

Remove Finisher 361: Paper Jam

Remove Finisher 362: Paper Jam

Remove Finisher 363: Paper Jam

Remove Finisher 364: Paper Jam

Remove Finisher 365: Paper Jam

Remove Finisher 366: Paper Jam

Remove Finisher 367: Paper Jam

Check DUPLEX 370: Paper Jam

Communication failure with an option unit detected by Engine

Error detected at Interface to the Finisher-Unit.

Printer engine cover is open.

No Fuser unit detected when turning on the printer or closing the cover.

No Belt unit detected when turning on the printer or closing the cover.

No ID unit detected when turning on the printer or closing the cover.

End of the ID unit life. 26,000 or more copies printed.

The Duplex unit is removed from the printer.

Paper jam detected at befor input area.

Paper jam detected at input area.

Paper jam detected at regist roller.

Paper jam detected at invert path.

Paper jam detected at invert stack.

Paper jam detected at Bin#1 exit.

Paper jam detected at Bin#2 exit.

Paper jam detected after paper reverse in the Duplex unit.

1) Is the error message displayed?

2) Does the error repeat?

1) Is the error message displayed?

2) Does Interface cable to the finisher connect properly?

3) Does AC cable to the finisher connect properly?

4) Does the error repeat?

1) Is the Top cover open?

2) Does the Cover switch operatenormally?

1) Is the error message displayed?

2) Is the Fuser unit mounted properly?

3) Does the error repeat?

1) Is the error message displayed?

2) Is the Belt unit mounted properly?

3) Does the error repeat?

1) Is the error message displayed?

2) Is the ID unit mounted properly?

3) Does the error repeat?

Is it displayed soon after the ID unit replacement?

Recovered if the Duplex unit is inserted again?

Is a paper jammed at befor input area? YesNoRemove the jammed paper.(See Fig.

Is a paper jammed at input area? YesNoRemove the jammed paper.(See Fig.

Is a paper jammed at regist roller? YesNoRemove the jammed paper.(See Fig.

Is a paper jammed at invert path? YesNoRemove the jammed paper.(See Fig.

Is a paper jammed at invert stack? YesNoRemove the jammed paper.(See Fig.

Is a paper jammed at Bin#1 exit? YesNoRemove the jammed paper.(See Fig.

Is a paper jammed at Bin#2 exit? YesNoRemove the jammed paper.(See Fig.

1) Is a paper jammed in the Duplex unit? YesNoRemove the jammed paper.

Yes

Turn off/on the printer.

Yes

Replace the option unit.

Yes

Turn off/on the printer.

Yes Re-connect Interface cable finisher and

turn off/on the printer.

Yes Re-connect AC cable finisher and turn

off/on the printer.

Yes

Replace the Interface cable or AC cable.

Close the Top cover.

Yes

Close the Side cover.

Yes

Replace the Cover switch.

Confirm the existence of the unit.

Yes

Re-install the Fuser unit and turn off/on

the printer. Replace the Fuser unit Assy.

Yes Yes

Confirm the existence of the unit. Re-install the Belt unit and turn off/on

the printer. Replace the Belt unit Assy.

Yes

Confirm the existence of the unit.

Yes

Re-install the ID unit and turn off/on the

printer. Replace the ID unit Assy.

Yes YesNoConfirm the life of the ID unit.

Replace the ID unit.

YesNoNormal

Replace the Duplex unit or Engine board.

5.5.2 No.361) Replace the Finisher unit.

5.5.2 No.362) Replace the Finisher unit.

5.5.2 No.363) Replace the Finisher unit.

5.5.2 No.364) Replace the Finisher unit.

5.5.2 No.365) Replace the Finisher unit.

5.5.2 No.366) Replace the Finisher unit.

5.5.2 No.367) Replace the Finisher unit.

Check the Duplex unit, or replace it.

Oki Data CONFIDENTIAL

Check DUPLEX 371: Paper Jam

Paper jam detected at the Duplex unit

1) Is a paper jammed in the Duplex unit? YesNoRemove the jammed paper. Check the Duplex unit, or replace it.

41388601TH Rev.6 74 /

Page 75

Table 5-1-1 Operator Alarms (5/6)

Message Cause Error Description Solutions

Check DUPLEX 372: Paper Jam

Open Side Cover 380: Paper Jam

Open Stacker Cover 381: Paper Jam

Open Stacker Cover 382: Paper Jam

Open Stacker Cover 383: Paper Jam

Check MP Tray 390: Paper Jam

Check Tray * 391~395: Paper Jam

Open Stacker Cover 400: Paper Size Error

Toner Low 410: Yellow 411: Magenta 412: Cyan 413: Black

Check Stapler Cartridge 471: Stapler Cartridge Missing

Check Punch Chip Box 472: Punch Chip Box Missing

Install Finisher 473: Finisher is Removed

Remove Printed Papers 480: Stacker Full

Load *** Papers 490: No paper in the MP Tray (*** = A4, B5 etc.)

Paper jam detectedd uring paper feed from the Duplex unit.

Paper jam during paper feed from the Cassette 1, 2, 3, 4 or 5.

Paper jam detected btwn the B ID and Fuser.

Paper jam detected in the Fuser unit or btwn the Fuser and paper ejection.

Paper jam detected on paper entering the Duplex unit.

Paper jam during paper feed from the MP Tray.

Paper jam detected btwn a cassette and the B ID.

Paper in a size different (45 mm or more) from the specification detected at the Printer engine.

Toner in one of the four colors is running short.

Stapler cartridge is not mounted in the Finisher.

Punch chip box is not mounted in the Finisher.

The Finisher is separated.

The stacker for ejected papers is full.

The specified cassette has no paper or is removed. Or, the cassette be ingused for printing has no more paper.

1) Does misfeed occur in the Duplex unit? YesNoRemove the misfed paper and close

1) Does misfeed occur in the specified cassette?

1) Is a paper jammed between the Y ID and Fuser?

2) Is the load on the Fuser unit normal?

1) Is a paper jammed in the Fuser unit or between the Y ID and Fuser unit?

2) Is the Paper eject switch work normally?

1) Is a paper jammed at the entrance of the Duplex unit or in the unit?

1) Does misfeed occur around the MP Tray? YesNoRemove the misfed paper and close the

1) Is a paper jammed around the cassette or between the B ID and cassette.

2) Does the Paper entry switch operate normal?

1) Is the paper in a custom size?

2) Is the paper in the standard size?

1) Is the specified toner cartridge almost empty?

2) Does the Toner sensor of the specified cartridge operate normally?

1) Is the message displayed?

2) Does the error repeated?

1) Is the message displayed?

2) Does the error repeated?

1) Is the message displayed?

2) Does the error repeated?

1) Is the stacker full?

2) Does the Stacker full sensor operate normally?

1) No paper in MT?

2) Does the Paper out sensor operate

normally?

the cover. Check the Duplex unit, or replace it.

YesNoRemove the jammed paper and install

the cassette. Check the Cassette 1, 2, 3, 4 or 5, or

replace it.

YesNoRemove the jammed paper.

Replace the Fuser unit.

YesNoRemove the jammed paper.

Replace the Fuser unit.

YesNoRemove the jammed paper and close.

Check the Duplex unit, or replace it.

cover. Check the MP Tray, or replace it.

YesNoRemove the jammed paper.

Replace the Paper entry switch.

Yes

No action required.

Yes

Adjust the Paper size guide of the cassette.

Replace the Paper size board

(B73 PWB).

YesNoReplace it with a new toner kit.

Replace the Toner sensor for the specified color.

Yes

Turn off/on the printer.

Yes

Mount the Stapler Cartridge.

Yes

Turn off/on the printer.

Yes

Mount the Punch Chip Box.

Yes

Turn off/on the printer.

Yes

Install the Finisher.

YesNoRemove papers from the stacker.

Replace the Stacker full sensor.

YesNoLoad papers in MT.

Replace the Paper out sensor.

Oki Data CONFIDENTIAL

41388601TH Rev.6 75 /

Page 76

Table 5-1-1 Operator Alarms (6/6)

Message Cause Error Description Solutions

Load *** Papers 491~495: No paper in the Tray * (*** = A4, B5 etc.)

Replace Belt The belt counter has

Replace Fuser The fuser counter has

No paper in the Cassette 1, 2, 3, 4 or 5 detected.

reached the life value.

reached the lifevalue

1) No paper in the specified cassette?

2) Does the Paper out sensor operate

normally?

1) Is the error message displayed?

2) Does the error occur soon after Belt unit

replacement?

1) Is the error message displayed?

2) Does the error occur soon after

Fuser unit replacement?

YesNoLoad papers in the specified cassette.

Replace the Paper out sensor of the specified cassette.

YesNoCheck the belt life.

Replace the Belt unit immediately or at the next maintenance.

YesNoCheck the fuser life.

Replace the Fuser unit immediately or at the next maintenance.

Oki Data CONFIDENTIAL

Job Offset Home Error

Running Short of Paper in Tray *

Disc Operation Error

The Job offset assy does not operate or cannot detect the home position.

Running short of paper detected

HDD cannot be written.

Does the Job offset assy operate normally? YesNoReplace the Job offset sensor.

Does only small mount of papers (approx. 30 sheets or less) remain?

Is the operating procedure correct? No

Replace the Job offset motor or Engine board.

YesNoLoad papers.

Check the Paper near end sensor. Confirm the procedure in the manual.

Yes

Replace the HDD as it is broken.

41388601TH Rev.6 76 /

Page 77

Oki Data CONFIDENTIAL

Equipment plane view

S/C-121

FAN#2

S/C-121

Power Supply Unit

FAN#1

AC SW

S/C-121

FAN#5

S/C-51

CUboaud

Heater

FAN#3

S/C-122

Heater exhaust

S/C-unspecified

S/C-120

FAN#4

S/C-121

High-voltage Power Supply

Notice: S/C---> Service Call

Figure 5.5.1 A Power Supply-related Error

S/C 120

Error detected at cooling fan for Engine PCB(PCB-K73 PU board).

121

Error detected at two Power Unit cooling fans./ Error detected at Power Unit temperature rise./ Error detected at charge output or Interface signals in High-voltage Power Unit.

Error detected at fan for a heater exhaust

122

gas.

Description

Action

Change FAN#4.

Change FAN#1 or / and FAN#2 when a error occurs and the FAN#1 or FAN#2 are not turnning. In this case, please also check contents of 5.5.2 LCD message troubleshooting-6Fan motor error. If Both FAN#1 and FAN#2 are turnning, change a Belt-Unit. If an error occurs also with this means, change a High-Voltage Power Supply Unit. If an error occurs also with this means, change a Power Supply Unit.

Change FAN#3.

41388601TH Rev.6 77 /

Page 78

Numbers are error code

Upper cover (no sensor)

Oki Data CONFIDENTIAL

Bin 1 (face up)

Bin 2 (face down)

JAM 06

366

JAM 07

367

Invert

path

JAM 05

365

Punch

unit

JAM 02

362

Paper Feed Knob

Accumulator

Staple

path

JAM 01

361

Sensor Switch

Roller

Motor Paper path

JAM 03

363

E R

364

JAM 04

Punch

O P

Figure 5.5.2 The position which paper-Jam occurs

*See the Numbers with under line(361-367).

Lower cover

41388601TH Rev.6 78 /

Page 79

5.5.2 LCD message troubleshooting (1) LCD Message

The message on the LCD (liquid crystal display) tells the problem situation of the printer. Implement the appropriate troubleshooting base on the message.

No. Problem Flowchart Number

1 The printer does not work normally after being turned on. 1 2 JAM Error

Paper Input Jam (1st Tray) 2-1 Paper Input Jam (MT) 2-2 Paper Feed Jam 2-3 Paper Eject Jam 2-4

DUPLEX Jam 2-5 3 Paper Size Error 3 4 I/D Unit Up/Down Error 4 5 Fuser Unit Error 5 6 Fan Motor Error 6

Oki Data CONFIDENTIAL

Note:

When replacing the engine board (L73 PWB), demount the EEPROM chip from the old board and remount it on the new one.

41388601TH Rev.6 79 /

Page 80

1 The printer does not work normally after turned on.

• Turn off the printer, wait a few seconds, then turn it on again.

• Is displayed on the LCD (for about 1 second)?

• No Is the AC cable connected correctly?

No Connect the AC cable correctly.

▼

• Yes Is +5V supplied to the PANEL connector pins on the PU board (K73 PWB)? +5V: Pin 5 0V: Pin 2

Yes Is the operator panel cable connected correctly?

No Connect the cable correctly.

▼

Yes Replace the operator panel cable. Recovered?

No Replace the cover assembly of the operator panel.

▼

Yes End

Oki Data CONFIDENTIAL

▼

• No Is +5V supplied on the POWER connector of the engine board (K73 PWB)? Pin 11,12, 13, 14: +5V Pin 3, 4, 5, 6, 23, 24, 25, 26, 27, 28, 29, 30: 0V

No Check the connection of the POWER connector, or replace the low-voltage power

supply unit.

▼

• Yes Replace the engine board.

▼

• Yes Are the following voltages supplied to the PU connector of the main board? Pin 137-147, 187-197: +5V Pin 125-136, 175-186: +3.3V Pin 148, 198: +12V Pin 101-124, 149-174, 199, 200: 0V

Yes Is the main board assy inserted correctly?

No Insert it correctly. Yes Replace the main board.

▼

• No Are the following voltages supplied on the POWER connector of the engine board? Pin 11, 12, 13, 14: +5V Pin 15, 16, 17, 18: +3.3V Pin 1: +12V Pin 2: -12V Pin 7, 8, 9, 10: +32V Pin 3, 4, 5, 6, 25, 26, 27, 28: 0V

Yes Replace the engine board.

▼

• No Replace the low-voltage power supply unit.

41388601TH Rev.6 80 /

Page 81

Oki Data CONFIDENTIAL

2-1 Paper Input Jam (1st Tray)

• Does the jam occur soon after the printer is turned on?

• Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor ?

* MT : Multipurpose Tray

Yes Remove the jammed paper.

▼

• No Do the sensor levers (of the entrance cassette sensor and the entrance MT sensor) operate normally?

No Replace the defective sensor lever.

▼

• Yes Do the sensors (the entrance cassette sensor and the entrance MT sensor) work properly? (Operate each sensor lever and verify the signal on the FSENS connector pins on the PU board (K73 PWB).) Pin 4: Entrance cassette sensor, Pin 2: Entrance MT sensor

No Check the signal cable connection, or replace the sensor board (R71 PWB).

▼

• Yes Check the signal cable connection, or replace the engine board (K73 PWB).

▼

• No Does the paper jam occur immediately after the paper is fed?

• Yes Does the paper reach the entrance cassette sensor or the entrance MT sensor?

Yes Go to .

▼

• No Replace the feed roller or the Retard Pad assy in the paper tray.

▼

• No Is the feed motor rotating?

Yes Replace the feed roller.

▼

• No Is the resistance of the feed motor at the rated value (approx. 7.9 or 8.4 Ω)? No Replace the feed motor.

▼

• Yes Is +32V supplied to the POWER connector Pins 7~10 on the engine board? No Replace the low-voltage power supply unit.

▼

• Yes Check gear engagement and cable connection, or replace the engine board.

41388601TH Rev.6 81 /

Page 82

2-2 Paper Input Jam (Multipurpose Tray (MT))

• Does the paper jam occur immediately after the printer is powered on?

• Yes Is the paper jammed at the entrance cassette sensor or the entrance MT sensor ?

Yes Remove the paper jam.

▼

• No Does the lever of the entrance MT sensor operate normally? No Replace the defective sensor lever.

▼

• Yes Does the entrance MT sensor work properly? (Operate the sensor lever and confirm that the sensor works properly with the signal on the FSENS connector pin on the engine board (K73 PWB).) Pin 2: Entrance MT sensor

No Check the connection of the signal cable, or replace the sensor board (R71 PWB).

▼

• Yes Check the signal cable connection, or replace the engine board.

Oki Data CONFIDENTIAL

▼

• No Does the paper jam occur immediately after paper is fed?

• Yes Does the paper reach the entrance MT sensor ?

Yes Go to .

▼

• No Replace the multipurpose tray assembly.

▼

• No Does the registration motor rotate properly?

• No Is +32V supplied to the POWER connector Pins 7~10 on the engine board? No Replace the low-voltage power supply unit.

▼

• Yes Check the connection of cables, or replace the engine board.

▼

• Yes Go to 2-3 Paper Feed Jam.

41388601TH Rev.6 82 /

Page 83

2-3 Paper Feed Jam

• Does the paper jam occur immediately after the printer is powered on?

• Yes Is the paper jammed at the entrance belt sensor?

Yes Remove the jammed paper.

▼

• No Does the lever of the write sensor work right?

No Replace the lever of the write sensor.

▼

• Yes Does the entrance belt sensor work properly? (Operate the sensor lever and verify the signal on the FSENS connector pin on the engine board (K73 PWB).) Pin 6: Entrance belt sensor

No Check the connection of the cable, or replace the sensor board (R71 PWB).

▼

• Yes Check the signal cable connection. Is it attached properly?

Oki Data CONFIDENTIAL

No Connect the cable properly.

▼

• Yes Replace the engine board.

▼

• No Does the paper jam occur immediately after paper is fed?

• Yes Does the paper reach the write sensor?

Yes Go to .

▼

• No Is the registration motor rotating?

• No Is the resistance of the registration motor at the rated value (approx. 7.9 Ω)? No Replace the registration motor.

▼

• Yes Check the gear engagement, or replace the engine board.

▼

• Yes Replace the resistration roller (A) or (B).

▼

• No Does the paper jam occur when paper is loaded?

• Yes Does the belt motor rotate properly?

• No Is the resistance of the belt motor at the rated value (approx. 7.9 Ω)?

No Replace the belt motor.

▼

• Yes Check gear engagement, or replace the engine board.

▼

• Yes Check gear engagement, or replace the belt assy.

▼

• No End

41388601TH Rev.6 83 /

Page 84

2-4 Paper Eject Jam

• Does the paper jam occur immediately after the printer is powered on?

• Yes Is the paper jammed at the ejection sensor?

Yes Remove the jammed paper.

▼

• No Does the lever of the ejection sensor operate normally? No Replace the ejection sensor lever.

▼

• Yes Does the ejection sensor work properly? (Operate the sensor lever and confirm that the sensor works properly or verify the signal on the PARTTEMP connector Pin 8 on the engine board (K73 PWB).) Pin 8: Ejection sensor

No Check the signal cable connection, or replace the ejection sensor.

▼

• Yes Replace the engine board.

Oki Data CONFIDENTIAL

▼

• No Dose the heat motor rotate properly?

• No Is the resistance of the heat motor at the rated value (approx. 7.9 Ω)?

No Replace the heat motor.

▼

• Yes Is +32V supplied to the POWER connector Pins 7~10 on the engine board? No Replace the low-voltage power supply unit.

▼

• Yes Check the connection of the cables, or replace the engine board.

▼

• Yes Does the paper separator operate normally?

• No Does the paper separator solenoid work normally?

No Check the cable connection, or replace the solenoid or the engine board.

▼

• Yes Replace the paper separator assy.

▼

• Yes Replace the eject guide assy.

41388601TH Rev.6 84 /

Page 85

Oki Data CONFIDENTIAL

2-5 DUPLEX jam

• Does the paper jam occur immediately after the printer is turned on?

• Yes Is the paper jammed at the in sensor, rear sensor or front sensor in the DUPLEX unit?

Yes Remove the jammed paper.

▼

• No Do the in sensor, rear sensor and front sensor in the DUPLEX unit operate properly? No Replace the defective sensor.

▼

• Yes Check the cable connections at the in sensor, rear sensor and front sensor of the DUPLEX unit, or replace the DUPLEX unit board (V73 PWB).

▼

• No Does the paper jam occur immediately after paper is fed into the DUPLEX unit?

• Yes Is the DUPLEX motor rotating?

No Replace the DUPLEX motor.

▼

• Yes Check gear engagement or replace the DUPLEX board (V73 PWB).

▼

• Yes Replace the DUPLEX unit.

41388601TH Rev.6 85 /

Page 86

3 Paper Size Error

• Is paper in the specified size used? No Use paper that complies with the specification.

Yes Is the paper jammed at the entrance MT sensor or at the paper width sensor?

Yes Remove the jammed paper.

▼

• Yes Does the lever of the entrance MT sensor operate normally? No Replace the defective sensor lever.

▼

• Yes Does the entrance MT sensor work properly?

(Operate the sensor lever and verify the signal on the FSENS connector pin on the engine board (K73 PWB).) Pin 4: Entrance MT sensor

No Check cable connection, or replace the sensor board (R71 PWB).

Oki Data CONFIDENTIAL

▼

• Yes Does the lever of the entrance belt sensor operate normally? No Replace the defective sensor lever.

▼

• Yes Does the entrance belt sensor work properly?

(Operate the sensor lever and confirm that the sensor works properly, verify the signal on the FSENS connector pin on the engine board (K73 PWB).) Pin 6: Entrance belt sensor

No Check cable connection or replace the sensor board (R71 PWB).

▼

• Yes Do all the paper-size detecting switches on the size detecting board (B73 PWB) work right?

(Press the paper-size detecting switches and verify the signal on the engine board PSIZE connector pins.) Pin 3: Paper size detector 1 Pin 4: Paper size detector 2 Pin 5: Paper size detector 3 Pin 6: Paper size detector 4

No Check cable connection, or replace the size detecting board (B73 PWB).

▼

• Yes Check cable connection, or replace the engine board.

41388601TH Rev.6 86 /

Page 87

Oki Data CONFIDENTIAL

4 Image Drum Unit (IDU) Up/Down Error

• Turn off the printer, wait a few seconds, then turn it on again.

• Does each drum unit rotate properly while printing?

• No Is the resistance of the IDU motor at the rated value (approx. 4.0 Ω)?

No Replace the defective IDU motor.

▼

• Yes Is +32V supplied to the POWER connector Pins 7~10 on the engine board? No Replace the low-voltage power unit.

▼

• Yes Check cable connection, or replace the engine board.

▼

• Yes Does the IDU sensor lever work adequately?

• No Check gear engagement and the sensor lever operation, or replace the defective gear or

sensor lever.

▼

• Yes Does the IDU sensor operate properly? Verify the signal on the JODEN connector pins on the driver board (K73 PWB). Pin 4: IDU sensor cyan Pin 14: IDU sensor black Pin 2: IDU sensor magenta Pin 12: IDU sensor yellow

No Replace the junction board (N73 PWB).

▼

• Yes Check the cable connection between the junction board (N73 PWB) and engine board (K73 PWB), or replace the engine board.

41388601TH Rev.6 87 /

Page 88

5 Fuser Unit Error

• Does the fuser error occur immediately after the printer is turned on?

• Yes Does the heat roller thermistor have a open or short circuit? (See Figure 5.1.) (at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)

Yes Replace the fuser unit.

▼

• No Does the back-up roller thermistor have a open or short circuit? (See Figure 5.1.) (at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)

Yes Replace the fuser unit.

▼

• No

▼

• No Does the fuser error occur about 3 min. after the printer is turned on?

Oki Data CONFIDENTIAL

• No Go to .

▼

• Yes Is the fuser’s heater on? (Does it get hot?)

• Yes Replace the engine board.

▼

• No Replace the fuser unit.

▼

• No Does AC voltage appear between CN1 connector Pin 1 and Pin3 of the low-voltage power supply unit?

No Replace the low-voltage power supply unit.

▼

• Yes Replace the fuser unit.

Halogen Lamp

Back-up Roller Thermistor

Heat Roller Thermistor

Bottom part of Fuser Unit

Figure 5.1

41388601TH Rev.6 88 /

Page 89

Oki Data CONFIDENTIAL

6 Fan Motor Error

• Does the fan of the low-voltage power supply unit rotate after the printer is turned on?

• Yes Does the error recur after the fan of the low-voltage power supply unit has been replaced?

• Yes Replace the low-voltage power supply unit.

▼

• No End

▼

• Yes Does the engine board fan rotate after the printer is turned on?

• No Is +32V supplied to the FAN connector Pin 1 on the engine board (K73 PWB)?

• No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?

+32V: Pin 7, 8, 9, 10 No Check cable connection or replace the low-voltage power supply unit.

▼

• Yes Replace the engine board.

▼

• Yes Replace the fan of the engine board.

▼

• Yes Does the fuser fan rotate after the printer is turned on?

• No Is +32V supplied to the JOBOFF connector Pin 5 on the engine board (K73 PWB)?

• No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?

+32V: Pin 7, 8, 9, 10

No Check cable connection, or replace the low-voltage power supply unit.

▼

• Yes Replace the engine board.

▼

• Yes Replace the fuser fan.

▼

• Yes End

41388601TH Rev.6 89 /

Page 90

5.5.3 Image troubleshooting When the printout images are not satisfactory as shown below, follow the troubleshooting

procedures given in this section.

Light or blurred images, or images in inappropriate color tone (Figure 5.2- A ) 1 Dark background (Figure 5.2- B ) 2 No images on print output (Figure 5.2- C ) 3 Band/stripes in black or color in the longitudinal direction (Figure 5.2- D ) 4 Band/stripes in white or irregular color in the longitudinal direction (Figure 5.2- F ) 5 Poor fusing (Images are blurred or peeled off when touched with a hand.) 6 Cyclical printout defects (Figure 5.2- E ) 7 Missing characters 8 Color misalignment 9 Printout colors different from the original 0

Oki Data CONFIDENTIAL

Printout problem Flowchart No.

Light or blurred images as a whole

Cyclical defect

Dark background density

White belts or

streaks in the vertical direction

Figure 5.2

Blank paper

Black stripes in the vertical direction

41388601TH Rev.6 90 /

Page 91

Oki Data CONFIDENTIAL

1 Light or blurred images or images in inappropriate color tone on the whole printout area

(Figure 5.2- A )

• Is toner low? (Is the message "Toner Low" displayed?) Yes Supply toner.

▼

• No Is the specified paper used? No Use the specified paper.

▼

• Yes Is the lens of the LED head dirty? Yes Clean the LED head lens.

▼

• No Is each LED head assy connected properly to the junction board (Y71 PWB) and engine

board (K73 PWB)?

No Check the cable connection (between each LED head and the engine board) and connect

the cable between the LED head and the engine board properly.

▼

• Yes Is +3.8V supplied to the following POWER connector pins on the junction board(Y71 PWB)?

+3.8V: Pins 1, 2, 3, 4, 5, 6, 7 and 8

• Yes Is +3.8V supplied to each LED head assy from the junction board (Y73 PWB)? YPOW connector Pin 3: LED head assy yellow MPOW connector Pin 3: LED head assy magenta CPOW connector Pin 3: LED head assy cyan BPOW connector Pin 3: LED head assy black

No Replace the junction board (Y71 PWB).

▼

• Yes Check the cable connection, or replace the LED head assy.

▼

• No Check the cable connection, or replace the low-voltage power supply unit. Recovered? Yes End

▼

• No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?

+32V: Pins 7, 8, 9 and 10

No Check cable connection, or replace the low-voltage power supply unit.

▼

• Yes Is +32V supplied to the HVOLT connector Pin 5 on the engine board (K73 PWB)? No Replace the engine board.

▼

• Yes Check the cable connection, replace the high-voltage power unit, or belt cassette assembly.

Recovered?

Yes End

▼

• No Is each ID terminal connected correctly to the contact assembly? (See Figure 5.3.) No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2.

41388601TH Rev.6 91 /

Page 92

2 Dark background (Figure 5.2- B )

• Was each ID exposed to external light for a long time?

Oki Data CONFIDENTIAL

Yes Replace the ID unit.

▼

• No Are the rollers in the fuser unit contaminated?

Note:

Reset the counter after replacement.

Yes Replace the fuser unit.

▼

• No Adjust the setting of “MEDIA TYPE”.

Light: 60 g/sq.m. Med. light: 64~74 g/sq.m. Medium: 75~90 g/sq.m. Med. heavy: 91~104 g/sq.m. Heavy: 105~122 g/sq.m. Ultra heavy: 123~175 g/sq.m.

No Set the “MEDIA TYPE” properly.

▼

• No Is each LED head assy connected to the junction board(Y71 PWB) correctly? No Connect each LED head assy to the junction board(Y71 PWB) appropriately.

▼

• Yes Is +3.8V supplied to the following POWER connector pins on the junction board (Y71 PWB)?

+3.8 V: Pins 1, 2, 3, 4, 5, 6, 7 and 8

• Yes Is +3.8V supplied to the following cable connector pins between the junction board (Y71 PWB) and each LED head assy? YPOW connector Pin 3: LED head assy yellow MPOW connector Pin 3: LED head assy magenta CPOW connector Pin 3: LED head assy cyan BPOW connector Pin 3: LED head assy black

No Replace the junction board(Y71 PWB).

▼

• Yes Check the cable connection, or replace the LED head assy.

▼

• No Check the cable connection, or replace the low-voltage power supply unit. Recovered? Yes End

▼

• No Is +32V supplied to the POWER connector pins on the engine board (K73 PWB)?

+32V: Pins 7, 8, 9 and 10

No Check the cable connection, or replace the low-voltage power supply unit.

▼

• Yes Is +32V supplied to the POWER connector pins of the engine board (K73 PWB)? No Replace the engine board.

▼

• Yes Check the cable connection, or replace the high-voltage power supply unit or belt cassette

assy. Recovered?

Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3) No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

41388601TH Rev.6 92 /

Page 93

Oki Data CONFIDENTIAL

3 Blank paper (Figure 5.2- C )

• Is each LED head assembly connected to the junction board (Y71 PWB) and Engine board (K73

PWB)correctly?

No Check the cable connection the LED assembly with the junction board (Y71 PWB) and

engine board.

▼

• Yes Is +3.8V supplied to the following POWER connector pins on the junction board (Y71 PWB)?

+3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8

• Yes Is +3.8V supplied to the following cable connector pins between the junction board (Y71 PWB) and each LED head assembly? YPOW connector Pin 3 : LED head assembly yellow MPOW connector Pin 3 : LED head assembly magenta CPOW connector Pin 3 : LED head assembly cyan BPOW connector Pin 3 : LED head assembly black

No Replace the junction board (Y71 PWB).

▼

• Yes Check the cable connection, or replace the LED head assembly.

▼

• No Is +32V supplied to the POWER connector pins of the engine board (K73 PWB)? +32V: Pin 7, 8, 9, 10

No Check the cable connection, or replace the low-voltage power supply unit.

▼

• Yes Is +32V supplied to the HVOLT connector Pin 5 of the engine board (K73 PWB)?

No Replace the engine board.

▼

• Yes Check the cable connection, or replace the high-voltage power supply unit or belt cassette assembly. Recovered?

Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3)

No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2.

41388601TH Rev.6 93 /

Page 94

Oki Data CONFIDENTIAL

4 Band/stripes in black or color in the longitudinal direction (Figure 5.2- D )

• Is each LED head assembly connected to the junction board (Y71 PWB) correctly?

No Connect the LED head assembly to the junction board correctly.

▼

• Yes Check the cable connection, or replace the LED head assembly. Recovered?

Yes End

▼

• No Check the cable connection, or replace the junction board (Y71 PWB). Recovered?

Yes End

▼

• No Is the engine board (K73 PWB) connected with the junction board (Y71 PWB) correctly?

No Connect the engine board with the junction board correctly.

▼

• Yes Check the cable connection, or replace the engine board (K73 PWB). Recovered?

Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3)

No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2

41388601TH Rev.6 94 /

Page 95

Oki Data CONFIDENTIAL

5 Band/stripes in white or irregular color in the longitudinal direction (Figure 5.2- F )

• Is each LED head lens contaminated?

Yes Clean the LED head lens.

▼

• No Is each LED head assembly connected to the junction board (Y71 PWB) correctly?

No Connect the LED head assembly to the junction board (Y71 PWB) correctly.

▼

• Yes Check the cable connection, or replace the LED head assembly. Recovered?

Yes End

▼

• No Check the cable connection, or replace the junction board (Y71 PWB). Recovered?

Yes End

▼

• No Is the engine board (K73 PWB) connected with the junction board correctly?

No Connect the engine board with the junction board correctly.

▼

• Yes Check the cable connection, or replace the engine board (K73 PWB). Recovered?

Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3)

No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2

41388601TH Rev.6 95 /

Page 96

Oki Data CONFIDENTIAL

6 Poor fusing (Images are blurred or peeled off when touched with a hand.)

• Is the specified paper used?

No Use the proper paper.

▼

• Yes Is the contact of the fuser unit connected correctly?

No Connect the contact of the fuser unit properly.

▼

• Yes Are the rollers in the fuser unit contaminated?

Yes Replace the fuser unit.

▼

• No Is the “MEDIA TYPE” (MENU 1) set correctly?. Light: 60 g/sq.m. Med. light: 64~74 g/sq.m. Medium: 75~90 g/sq.m. Med. heavy: 91~104 g/sq.m. Heavy: 105~122 g/sq.m. Ultra heavy: 123~175 g/sq.m.

No Set the proper “MEDIA TYPE”.

▼

• Yes Does AC voltage appear between the CN connector Pin 1 and Pin 3 of the low-voltage power supply unit?

No Replace the low-voltage power supply unit.

▼

• Yes Is the resistance of the heat roller thermistor within the rated value? (See the Figure 5.1) (at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)

No Replace the fuser unit.

▼

• Yes Is the resistance of the back-up roller thermistor within the rated value? (See the Figure 5.1) (at room temperature 0 °C~ 43 °C, approx. 190 ~ 980 Ω)

No Replace the fuser unit.

▼

• Yes Is the THERM1 signal on the THERM connector Pin 6 on the engine board (K73 PWB) within the range below?

No Replace the fuser unit assy.

▼

• Yes Replace the fuser unit assy.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2

41388601TH Rev.6 96 /

Page 97

7 Cyclical printout defects (Figure 5.2- E )

Cycle Defective Part Solution

94.3 mm Image Drum Replace the ID unit.

49.6 mm Developing Roller Replace the ID unit.

67.6 mm Toner Supply Roller Replace the ID unit.

44.0 mm Charge Roller Replace the ID unit. 113 mm Fuser Roller Replace the fuser unit.

57.8 mm Transfer Roller Replace the belt cassette assembly.

Oki Data CONFIDENTIAL

Note:

After replacement of the ID unit, fuser unit or belt cassette unit, the corresponding counter must be reset in the user maintenance mode.

41388601TH Rev.6 97 /

Page 98

Oki Data CONFIDENTIAL

8 Missing characters

• Is each LED head lens contaminated?

Yes Clean the lens of LED head.

▼

• No Is each LED head assembly connected to the junction board (Y71 PWB) correctly?

No Check the cable connection, and connect the LED head to the junction board correctly.

▼

• Yes Is +3.8V supplied to the following HEADPOW connector pins of the junction board (Y71 PWB)? +3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8

• Yes Is +3.3V supplied to each LED head assembly from the junction board (Y71 PWB)? YPOW connector Pin 3 : LED head assembly yellow MPOW connector Pin 3 : LED head assembly magenta CPOW connector Pin 3 : LED head assembly cyan BPOW connector Pin 3 : LED head assembly black

No Replace the junction board (Y73 PWB).

▼

• Yes Check the cable connection, or replace the LED head assembly.

▼

• No Check the cable connection, or replace the low-voltage power supply unit. Recovered? Yes End

▼

• No Is +32V supplied to the POWER connector of the engine board (K73 PWB)?

+32V: Pin 7, 8, 9, 10

No Check the cable connection, or replace the low-voltage power supply unit.

▼

• Yes Is +32V supplied to the HVOLT connector pin 5 of the engine board (K73 PWB)? No Replace the engine board.

▼

• Yes Check the cable connection, replace the high-voltage power supply unit or belt cassette

assembly. Recovered?

Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3) No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2

41388601TH Rev.6 98 /

Page 99

Oki Data CONFIDENTIAL

9 Color Misalignment

• Is any of the following gears broken? (Gear assy of ID unit, Multipurpose Tray, belt unit and belt motor) Yes Replace the broken gear assembly.

▼

• No Is each LED head unit connected to the junction board (Y71 PWB) correctly? No Connect the LED head unit correctly with the junction board.

▼

• Yes Check the cable connection, or replace the LED head assembly. Recovered? Yes End

▼

• No Check the cable connection, or replace the junction board (Y71 PWB). Recovered? Yes End

▼

• No Is engine board (K73 PWB) connected to the junction board (Y71 PWB) correctly? No Connect the boards correctly.

▼

• Yes Check the cable connection, or replace the EEPROM of the engine board. Recovered? Yes End

▼

• No Replace the engine board. Recovered? Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3) No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2

41388601TH Rev.6 99 /

Page 100

Oki Data CONFIDENTIAL

0 Printout colors different from the original

• Is each LED head lens contaminated? Yes Clean the LED head lens.

▼

• No Is each LED head assembly connected to the junction board (Y73 PWB) correctly? No Check the cable connection (between each LED head and the junction board) and connect

the LED assy to the junction board correctly.

▼

• Yes Is +3.8V supplied to the following HEADPOW connector pins of the junction board (Y71

PWB)? +3.8V: Pin 1, 2, 3, 4, 5, 6, 7, 8

• Yes Is +3.8V supplied to each LED head assembly from the junction board (Y71 PWB)? YPOW connector Pin 3 : LED head assembly yellow MPOW connector Pin 3 : LED head assembly magenta CPOW connector Pin 3 : LED head assembly cyan BPOW connector Pin 3 : LED head assembly black

No Replace the junction board (Y71 PWB).

▼

• Yes Check the cable connection, or replace the LED head assembly.

▼

• No Check the cable connection, or replace the low-voltage power supply unit. Recovered? Yes End

▼

• No Is +32V supplied to the POWER connector of the engine board (K73 PWB)?

+32V; Pin 7, 8, 9, 10

No Check the cable connection, or replace the low-voltage power supply unit.

▼

• Yes Is +32V supplied to HVOLT connector pin 5 of the engine board (K73 PWB)? No Replace the engine board.

▼

• Yes Check the cable connection, replace the high-voltage power supply unit or belt cassette

assembly. Recovered?

Yes End

▼

• No Is each ID terminal connected to the contact assembly correctly? (See Figure 5.3) No Connect the ID terminals with the contact assembly correctly.

▼

• Yes Replace the ID unit.

Notes: 1. When replacing the engine board (K73 PWB), demount the EEPROM chip from the old

engine board and remount it on the new one.

2. In case the EEPROM chip is not replaced, see Item (2) in Sec. 5.5.2

41388601TH Rev.6 100 /

Okidata C9200, C9400 MAINTENANCE MANUAL

Document Revision History

PREFACE

CONTENTS

1. SPECIFICATIONS

2. PARTS REPLACEMENT

3. ADJUSTMENT

4. REGULAR MAINTENANCE

5. TROUBLESHOOTING PROCEDURES