B245/B276/B277/B268/B269 Service Manual 18-Jan-06
iv
Lower Paper Feed Clutch (Two-tray Models Only) ...................................................... 91
Vertical Transport Sensor (Two-tray Models Only) ......................................................92
Paper Size Switch ....................................................................................................... 92
Image Transfer ................................................................................................................ 93
Image Transfer Roller ..................................................................................................93
Image Density Sensor ................................................................................................. 94
Fusing .............................................................................................................................95
Fusing Unit ..................................................................................................................95
Thermistor ...................................................................................................................95
Fusing Lamps ..............................................................................................................96
Hot Roller Stripper Pawls.............................................................................................97
Hot Roller..................................................................................................................... 97
Thermostat ..................................................................................................................98
Pressure Roller and Bushings ..................................................................................... 98
NIP Band Width Adjustment ........................................................................................99
Cleaning Roller .......................................................................................................... 100
Duplex Unit (Duplex Models B269/B277 Only).............................................................. 101
Duplex Exit Sensor .................................................................................................... 101
Duplex Entrance Sensor............................................................................................ 101
Duplex Inverter Sensor..............................................................................................102
Duplex Transport Motor .............................................................................................102
Duplex Inverter Motor ................................................................................................ 103
Duplex Control Board ................................................................................................ 103
Other Replacements .....................................................................................................104
Quenching Lamp .......................................................................................................104
High-Voltage Power Supply Board ............................................................................ 104
BICU (Base-Engine Image Control Unit) ................................................................... 105
Main Motor.................................................................................................................105
Rear Exhaust Fan (B269/B277 Only) ........................................................................ 106
Left Exhaust Fan .......................................................................................................106
PSU (Power Supply Unit) ..........................................................................................107
Gearbox.....................................................................................................................108
Copy Adjustments Printing/Scanning .............................................................................111
Printing .......................................................................................................................111
Scanning.................................................................................................................... 113
ADF Image Adjustment.............................................................................................. 114
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