B245/B276/B277/B268/B269 Service Manual 18-Jan-06
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Exposure Glass/DF Exposure Glass ...........................................................................61
Lens Block ...................................................................................................................62
Lamp Stabilizer Board And Exposure Lamp ................................................................ 63
Original Width/Length Sensor......................................................................................63
Scanner Motor .............................................................................................................65
Scanner Home Position Sensor................................................................................... 66
Adjusting Scanner Positions........................................................................................ 67
Laser Unit........................................................................................................................71
Location Of Caution Decal...........................................................................................71
Toner Shield Glass ......................................................................................................71
Laser Unit ....................................................................................................................72
LD Unit.........................................................................................................................73
Polygonal Mirror Motor ................................................................................................73
Laser Unit Alignment Adjustment.................................................................................74
PCU Section....................................................................................................................76
PCU.............................................................................................................................76
Pick-off Pawls and Toner Density Sensor .................................................................... 77
OPC Drum ...................................................................................................................78
Charge Roller and Cleaning Brush ..............................................................................79
Cleaning Blade ............................................................................................................ 79
Developer ....................................................................................................................80
After Replacement or Adjustment ................................................................................ 81
Toner Supply Motor ......................................................................................................... 82
Paper Feed Section ........................................................................................................83
Paper Feed Roller .......................................................................................................83
Friction Pad .................................................................................................................84
Paper End Sensor .......................................................................................................84
Exit Sensor ..................................................................................................................85
By-Pass Feed Roller and Paper End Sensor............................................................... 86
Registration Roller .......................................................................................................87
By-Pass Paper Size Switch .........................................................................................88
Registration Clutch ......................................................................................................89
Registration Sensor .....................................................................................................89
Upper Paper Feed Clutch and By-Pass Feed Clutch ..................................................90
Relay Clutch ................................................................................................................90
Relay Sensor ...............................................................................................................91