B245/B276/B277/B268/B269 Service Manual 18-Jan-06
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Tray Heaters ...................................................................................................................33
Upper Tray Heater .......................................................................................................33
Lower Tray Heater (Two-tray Model Only) ................................................................... 35
Tray Heaters For The Optional Paper Feed Units ....................................................... 36
Key Counter Installation .................................................................................................. 40
GDI Expansion ................................................................................................................43
Accessory Check.........................................................................................................43
Installing Expansion Component ................................................................................. 43
Installing Panels and Keys ..............................................................................................45
Preventive Maintenance ..................................................................................................... 46
PM Tables .......................................................................................................................46
How to Reset the PM Counter......................................................................................... 49
Replacement and Adjustment ............................................................................................. 51
General Cautions ............................................................................................................ 51
PCU (Photoconductor Unit) ......................................................................................... 51
Transfer Roller .............................................................................................................51
Scanner Unit................................................................................................................51
Laser Unit ....................................................................................................................52
Fusing Unit ..................................................................................................................52
Paper Feed..................................................................................................................52
Special Tools and Lubricants...........................................................................................53
Exterior Covers & Operation Panel ................................................................................. 54
Rear Cover ..................................................................................................................54
Rear Lower Cover (Two-tray Models Only).................................................................. 54
Copy Tray ....................................................................................................................55
Upper Covers ..............................................................................................................55
Left Cover ....................................................................................................................56
Front Cover..................................................................................................................56
Front Right Cover ........................................................................................................57
Right Rear Cover.........................................................................................................57
Right Door (Duplex Unit (B269/B277)) ........................................................................58
By-pass Tray................................................................................................................ 58
Left Lower Cover (Two-tray Models Only) ...................................................................59
Right Lower Cover (Two-tray Models Only) .................................................................59
Platen Cover Sensor ...................................................................................................60
Scanner Unit ...................................................................................................................61
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