44473001TH Rev.1
5 /
Oki Data CONFIDENTIAL
CONTENTS
4.2.7.5 Cover-ADF-F / Guide-assy-exit-sub / ADF-assy /
ADF-board (FX750) ...........................................................................101
4.2.7.6 Cover-assy-top-ADF / Guide-assy / Roller / Motor / Clutch /
Solenoid ............................................................................................103
4.2.7.7 Guide-A-sub / F
rame-assy-separator / Spring-separator /
Rubber-friction ...................................................................................104
4.2.7.8 Cab
le (ADF-Rev SNS) .......................................................................104
4.2.7.9 Cab
le (ADF-Reg SNS) ......................................................................105
4.2.7.10 F
rame-assy-OP .................................................................................105
4.2.7.11 F
rame-OP-panel / OPE board (MC561) ............................................106
4.2.7.12 F
rame-OP-panel / OPE board (MC361) ............................................106
4.2.7.13 F
rame-OP-panel / OPE board (MC351) ............................................107
4.2.7.14 LCD-assy
...........................................................................................107
4.2.7.15 F
rame-assy-FB ..................................................................................108
4.2.8 F
ace-up tray ..............................................................................................110
4.2.9 Rear co
ver .................................................................................................110
4.2.10 LED assemb
ly. and LED assembly springs ...............................................111
4.2.11 Image dr
um fan and ZHJ board ................................................................111
4.2.12 T
op cover assembly ...................................................................................112
4.2.13 T
op cover and LED head cable assembly .................................................112
4.2.14 MPT assemb
ly ...........................................................................................113
4.2.15 F
ront fan, hopping motor, rear fan, image drum motor
and cover-open switch ...............................................................................114
4.2.16 High-v
oltage power supply board ..............................................................115
4.2.17 Guide-ejection assemb
ly, fuser connector assembly and
color-registration assembly .......................................................................116
4.2.18 F
rame-MPT assembly and feeder assembly .............................................117
4.2.19 Side-L assemb
ly, side-R assembly and base assembly ............................118
4.2.20 F
eed rollers ...............................................................................................119
4.3 Locations to lubr
icate ......................................................................................120
4.3.1 ADF
...........................................................................................................121
4.3.2 Pr
inter ........................................................................................................128
5. MAINTENANCE MENUS ......................................................139
5.1 Maintenance Menu .........................................................................................140
5.2 Service Bit Menu .............................................................................................148
5.3 Maintenance Utility ..........................................................................................149
5.4 V
arious printing of the printer unit with controller ............................................151
5.5 Switch pressing function when power supply is turned on ..............................152
5.6 Settings after P
arts Replacement ...................................................................153
5.4.1 Notes on CU/PU board replacement .........................................................153
5.7 About the man
ual setting of density correction ...............................................156
6. REGULAR MAINTENANCE ..................................................157
6.1 Recommended substitutes .............................................................................158
6.2 Cleaning ..........................................................................................................159
6.3 Cleaning LED lens array .................................................................................160
6.4 Cleaning the Paper Feed Roller .....................................................................162
6.5 Cleaning the P
aper Feed Rollers for MP Tray .................................................163
6.6 Cleaning Rollers in the ADF ...........................................................................164
6.7 Cleaning the Document Glass
........................................................................165
7. TROUBLESHOOTING PROCEDURES ................................166
7.1 Precautions prior to repair...............................................................................167
7.2 Items to be checked prior to taking action on abnormal images .....................167
7.3 Precautions when taking action on abnormal images ....................................167
7.4 Preparations for troubleshooting .....................................................................167
7.5 T
roubleshooting method ..................................................................................168
7.5.1 LCD messages list ....................................................................................168
7.5.2 Ser
vice Call List ........................................................................................206
7.5.3 F
ax Error List .............................................................................................211
7.5.4 Prepar
ing for troubleshootin ......................................................................213
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