USB Host Interface Unit Type A (B819)..................................................................................................114
IEEE1284 B679........................................................................................................................................115
Gigabit Ethernet G874.............................................................................................................................116
DOS Overwrite Security Unit (G874).........................................................................................................118
Before You Begin.......................................................................................................................................118
Seal Check and Removal.........................................................................................................................118
DOS Unit Installation.................................................................................................................................119
2. Preventive Maintenance
PM Tables.......................................................................................................................................................121
Main Machine...........................................................................................................................................121
Optional Peripheral Devices....................................................................................................................125
3. Replacement and Adjustment
General Cautions..........................................................................................................................................129
Drum...........................................................................................................................................................129
Drum Unit...................................................................................................................................................129
Transfer Belt Unit........................................................................................................................................130
Laser Unit....................................................................................................................................................130
Charge Corona.........................................................................................................................................130
Development..............................................................................................................................................131
Cleaning.....................................................................................................................................................131
Fusing Unit..................................................................................................................................................131
Paper Feed.................................................................................................................................................132
Used Toner.................................................................................................................................................132
Special Tools And Lubricants........................................................................................................................133
Special Tools..............................................................................................................................................133
Lubricants...................................................................................................................................................133
Operation Panel and External Covers.........................................................................................................134
Operation Panel........................................................................................................................................134
Front Door..................................................................................................................................................135
Right Covers...............................................................................................................................................135
Left Covers..................................................................................................................................................136
Rear Covers...............................................................................................................................................137
Top Cover..................................................................................................................................................138
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