HP 8550 Service Manual - Page 330
Removing the AP-IP PCB .. 372, Removing the ADF .378
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Page 330 highlights
Removing the AP-IP PCB 372 Removing the copy module main power supply PCB (DCP1 369 Removing the accessories power supply PCB (DCP2 370 Removing the power supply cooling fan (FM4) . . . . . 375 Removing the inverter PCB unit 376 Automatic document feeder (ADF 377 Identifying external covers 377 Removing the ADF 378 Removing the body cover 380 Mounting the original-width detecting volume 383 Removing the pick-up motor unit 385 Removing the ADF motor unit 387 Removing the belt motor 389 Removing the clutch unit 392 Removing the delivery motor 394 Removing the pick-up roller 396 Removing the separation belt unit 398 Removing the feeding roller unit 399 Removing the registration roller 402 Removing the delivery/reversing roller 407 Removing the delivery roller unit (bottom pick-up mode 410 Removing the delivery roller unit (top pick-up mode 412 Removing the reversing guide 419 Removing the stopper plate solenoid 422 Positioning the paper-retaining plate solenoid (SL2 420 Positioning the paper-deflecting solenoid (SL3) . . . . 426 Removing the stamp solenoid 427 Removing the feeding belt 431 328 Chapter - 6 Removal and replacement EN