44952001TH Rev.2
vi
Oki Data CONFIDENTIAL
5.4.7 Density adjustment test
............................................................................5-26
5.4.8 Consumable counter display ....................................................................5-27
5.4.9 Print counter display .................................................................................5-28
5.4.10 Factory/Shipping mode setting .................................................................5-28
5.4.11 Self-diagnostic function setup ..................................................................5-29
5.4.12 LED head serial number display ..............................................................5-30
5.5 Switch pressing function when power supply is turned on .............................5-31
5.6 Settings after Parts Replacement ..................................................................5-32
5.6.1 Notes on CU/PU board replacement ........................................................5-32
5.6.2 Notes on SU board/Scanner Unit replacement .............................................. 5-35
5.7 Manual density adjustment operation
............................................................5-36
6. REGULAR MAINTENANCE ...................................................6-1
6.1 Recommended substitutes ..............................................................................6-2
6.2 Cleaning ...........................................................................................................6-3
6.3 Cleaning LED lens array ..................................................................................6-4
6.4 Cleaning the Paper Feed Roller ......................................................................6-6
6.5 Cleaning the Paper Feed Rollers for MP Tray ..................................................6-7
6.6 Cleaning Rollers in the ADF ............................................................................6-8
6.7 Cleaning the Document Glass .........................................................................6-9
7. TROUBLESHOOTING PROCEDURES .................................7-1
7.1 Precautions prior to repair................................................................................7-2
7.2 Items to be checked prior to taking action on abnormal images ......................7-2
7.3 Precautions when taking action on abnormal images .....................................7-2
7.4 Preparations for troubleshooting ......................................................................7-2
7.5 Troubleshooting method ...................................................................................7-3
7.5.1 LCD messages list .....................................................................................7-3
7.5.2 Service Call List .......................................................................................7-42
7.5.3 Fax Error List ............................................................................................7-48
7.5.4 Email/Internet FAX Error List ....................................................................7-49
7.5.5 Preparing for troubleshooting ...................................................................7-50
7.5.6 Image Problem Troubleshooting ...............................................................7-80
7.5.7 Response after Flash compulsive initialization
.........................................7-86
7.5.8 Copy Image Abnormality Error Troubleshooting .......................................7-86
7.5.9 Network Troubleshooting ..........................................................................7-87
7.5.10 Wireless Troubleshooting .........................................................................7-88
7.6 Fuse Checking ...............................................................................................7-89
8. CONNECTION DIAGRAMS ..................................................8-1
8.1 Check of resistance values .............................................................................8-2
8.2 Layout of parts ................................................................................................8-6
8.3 Firmware Information ....................................................................................8-25
8.3.1 ROM control numbers ..............................................................................8-25
8.3.2 Instruction of FW update ..........................................................................8-25
8.3.3 Checking and indication of the revision number ......................................8-26
8.3.4 Stamp of maintenance board indication ..................................................8-26
9. APPENDIX ............................................................................9-1
9.1 List of Initialized range
.....................................................................................9-2
