44015503TH Rev. 1
5 /
Oki Data CONFIDENTIAL
CONTENTS
4.2.23 Paper feed rollers (tray 2/3 (option)) ...................................................100
4.2.24
Paper feed roller (multi-purpose tray) .................................................102
4.3
Portions Lubricated .........................................................................................103
5. MAINTENANCE MENUS ......................................................119
5.1 System Maintenance menu (for maintenance personnel)...............................120
5.2 Maintenance Utility ..........................................................................................122
5.3
User maintenance menu functions .................................................................124
5.3.1
Maintenance menu (for end-users) ....................................................124
5.3.2
Self-diagnostic mode ..........................................................................127
5.3.2.1
Operator Panel ..................................................................127
5.3.2.2
Normal self-diagnostic mode (level 1) ...............................129
5.3.2.3
Switch scan test ................................................................130
5.3.2.4
Motor and clutch test .........................................................132
5.3.2.5
Test printing .......................................................................134
5.3.2.6
Color registration adjustment test ......................................138
5.3.2.7
Density adjustment test .....................................................139
5.3.2.8
Consumable counter display .............................................141
5.3.2.9
Print counter display ..........................................................142
5.3.2.10
Factory-Shipping mode switching ......................................142
5.3.2.11
Self-diagnostic function setting ..........................................143
5.3.2.12
LED head serial number display ........................................144
5.3.2.13
NVRAM parameter setting .................................................144
5.3.3
Printing on stand-alone basis .............................................................144
5.3.4
Functions of buttons after power-on ...................................................145
5.4
Setup after part replacement ..........................................................................146
5.4.1
Notes on engine control board replacement.......................................146
5.4.2
EEPROM setup after CU board replacement .....................................147
5.5
Manual density adjustment setting ..................................................................148
5.6
Boot Menu List ................................................................................................149
6. CLEANING ............................................................................151
6.1 Cleaning ..........................................................................................................152
6.2 LED lens array cleaning ..................................................................................153
6.3
Pick-up roller cleaning .....................................................................................155
7. TROUBLESHOOTING PROCEDURE ...................................156
7.1 Before starting the repair work ........................................................................157
7.2 Confirmation items before taking corrective action against abnormalities ......157
7.3
Precautions when taking corrective action against abnormality .....................157
7.4
Preparation for troubleshooting .......................................................................157
7.5
Troubleshooting method ..................................................................................158
7.5.1
LCD message list ...............................................................................158
7.5.2
Preparation for troubleshooting ..........................................................179
7.5.2.(1)
LCD display error ..............................................................180
7.5.2.(2)
Abnormal operations of printer after the power is turned on 182
7.5.2.(3)
Paper feed jam (error code 391: 1st tray) ..........................191
7.5.2.(4)
Feed jam (error code 380) .................................................193
7.5.2.(5)
Paper feed jam (error code 390: Multipurpose tray) ..........194
7.5.2.(6)
Paper running jam (error code 381) ..................................196
7.5.2.(7)
Paper unloading jam (error code 382) ...............................198
7.5.2.(8)
Two-sided printing jam
(error code: 370, 371, 372, 373, 383) ................................200
7.5.2.(9)
Paper size error (error code 400 and 401) ........................202
7.5.2.(10)
ID unit Up/Down error (Service call 140 to 143) ................202
7.5.2.(11)
Fuser unit error (error 170 to 177) .....................................203
7.5.2.(12)
Motor fan error (error code 122, 127, 128, 918, 051) .......204
7.5.2.(13)
Print speed is slow. (Performance is low.) .........................205
7.5.2.(14)
Option unit cannot be recognized. .....................................205
7.5.2.(15)
LED head cannot be recognized.
(error code 131, 132, 133, 134) .........................................206
7.5.2.(16)
Toner cartridge cannot be recognized.
(error code 540, 541, 542, 543) ........................................207
7.5.2.(17)
Fuse cut error (error codes 150 to 155) ............................208
7.5.2.(18)
Humidity sensor error (error code 123) .............................209
7.5.2.(19)
Wiring diagram ..................................................................210
7.5.3
Troubleshooting the abnormal images................................................211
7.5.3.(1)
Color has faded-out and blurred entirely.
(Refer to Figure 7-2 A.) ......................................................212
7.5.3.(2)
Stain on white print (Refer to Figure 7-2 B.) ......................213
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