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Fuser front paper sensor (PS6) removal ........................................................................256
Fuser delivery paper sensor (PS7) removal ...................................................................256
Face-down delivery paper sensor (PS8) removal ..........................................................257
Reversed paper sensor (PS9) removal (HP 3700 only) .................................................257
Duplex feed delivery paper sensor (PS10) removal (HP 3700 only) .............................258
Rear output bin paper sensor (PS11) removal ...............................................................259
Color misregistration sensor (PS12) removal ................................................................260
Waste toner level sensor (PS13) removal ......................................................................260
Developing engaging sensor (PS14) removal ................................................................261
Environment sensor (PS15) removal .............................................................................261
Secondary transfer roller engaging sensor (PS16) removal ..........................................262
Solenoids and Clutches ........................................................................................................263
Tray 1 (multipurpose tray) pick-up solenoid (SL1) removal ...........................................263
Tray 2 pick-up solenoid (SL2) removal ...........................................................................264
Secondary transfer roller engaging solenoid (SL4) removal ..........................................265
Duplex feed solenoid (SL5) removal (HP 3700 only) .....................................................266
Registration clutch (CL1) removal ..................................................................................266
Black (K) development clutch (CL2 - image drive) removal ...........................................267
Developing engaging drive clutch (CL3) removal ..........................................................268
Motor and fans ......................................................................................................................269
Feed motor (M1) removal ...............................................................................................269
Delivery motor (M2) removal ..........................................................................................271
Drum motor (M3) removal ..............................................................................................271
Developing motor (M4) removal .....................................................................................273
Primary transfer roller engaging motor (M5) removal ....................................................274
Exhaust fan (FAN1) removal ..........................................................................................277
Circuit Boards ........................................................................................................................278
DC controller PCB removal ............................................................................................278
Formatter PCB removal ..................................................................................................279
High-voltage power supply PCB removal .......................................................................281
Low-voltage power supply PCB removal .......................................................................285
Memory controller PCB removal ....................................................................................286
Control Panel PCB removal ............................................................................................287
Miscellaneous parts ..............................................................................................................288
Swing rod guide, left removal .........................................................................................288
Swing rod/lock guide, right removal ...............................................................................288
Transfer contact assembly removal ...............................................................................288
Developing contact assembly .........................................................................................288
Tray 2 (cassette) parts removal ............................................................................................291
Tray 2 (cassette) .............................................................................................................291
Cassette (Tray 2) guide, right, removal ..........................................................................291
500-Sheet paper feeder (Tray 3) covers ...............................................................................296
Front cover removal - 500-sheet paper feeder ...............................................................296
Right cover removal - 500-sheet paper feeder ...............................................................297
Left cover removal - 500-sheet paper feeder .................................................................297
500-Sheet paper feeder internal parts ..................................................................................298
Pick-up roller removal - 500-sheet paper feeder ............................................................298
Separation pad removal - 500-sheet paper feeder ........................................................299
Pick-up drive unit removal - 500-sheet paper feeder .....................................................299
500-Sheet paper feeder sensor/solenoid/motor/PCB ...........................................................300
500-Sheet paper feeder PCB removal - 500-sheet feeder ............................................300
Pick-up clutch (CL4) removal - 500-sheet feeder ...........................................................301
Pick-up solenoid (SL3) removal - 500-sheet feeder .......................................................301
Paper sensor (PS3) removal - 500-sheet feeder ...........................................................302
ENWW Conventions ix