Special Tools and Lubricants...........................................................................................................................75
Exterior Covers & Operation Panel................................................................................................................76
Rear Cover...................................................................................................................................................76
Rear Lower Cover (Two-tray Models Only)..............................................................................................77
Copy Tray.....................................................................................................................................................77
Upper Covers...............................................................................................................................................78
Left Cover......................................................................................................................................................79
Front Cover...................................................................................................................................................79
Front Right Cover.........................................................................................................................................80
Right Rear Cover..........................................................................................................................................80
Right Door (Duplex Unit (B244/B269/B277)).......................................................................................81
By-pass Tray.................................................................................................................................................82
Left Lower Cover (Two-tray Models Only)................................................................................................83
Right Lower Cover (Two-tray Models Only).............................................................................................83
Platen Cover Sensor....................................................................................................................................84
Scanner Unit.....................................................................................................................................................85
Exposure Glass/DF Exposure Glass .........................................................................................................85
Lens Block.....................................................................................................................................................86
Lamp Stabilizer Board And Exposure Lamp..............................................................................................87
Original Width/Length Sensor...................................................................................................................87
Scanner Motor.............................................................................................................................................89
Scanner Home Position Sensor...................................................................................................................90
Adjusting Scanner Positions........................................................................................................................90
Laser Unit..........................................................................................................................................................95
Location of Caution Decal...........................................................................................................................95
Toner Shield Glass.......................................................................................................................................96
Laser Unit......................................................................................................................................................96
LD Unit...........................................................................................................................................................97
Polygonal Mirror Motor..............................................................................................................................98
Laser Unit Alignment Adjustment................................................................................................................98
PCU Section...................................................................................................................................................101
PCU.............................................................................................................................................................101
Pick-off Pawls and Toner Density Sensor.................................................................................................102
6
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