Xerox WorkCentre 3550 - 4 Repairs;Adjustments

April 2010
4-1
Phaser 3635MFP/WorkCentre 3550
Repairs and Adjustments
4 Repairs/Adjustments
REPs 1 - Standby Power
REP 1.1 SMPS................................................................................................................ 4-3
REP 1.2 HVPS................................................................................................................ 4-4
REPs 2 - User Interface
REP 2.1 User Interface Assembly (3635) ....................................................................... 4-5
REP 2.2 UI PWB and Touch Screen (3635) ................................................................... 4-6
REP 2.3 User Interface Assembly (3550) ....................................................................... 4-7
REPs 3 - Machine Run Control
REP 3.1 Main PWB......................................................................................................... 4-9
REP 3.2 USB host PWB and Harness............................................................................ 4-10
REPs 4 - Main Drives
REP 4.1 Main BLDC Motor ............................................................................................. 4-11
REPs 5 - DADF
REP 5.1 DADF Door Open Sensor................................................................................. 4-13
REP 5.2 DADF Lift Solenoid ........................................................................................... 4-13
REP 5.3 DADF Registration and Scan Sensors ............................................................. 4-14
REP 5.4 DADF Transport Assembly and DADF Feed Assembly ................................... 4-14
REP 5.5 DADF Drive Assembly...................................................................................... 4-16
REP 5.6 DADF Paper Length Sensor............................................................................. 4-17
REP 5.7 Pickup Assembly .............................................................................................. 4-18
REPs 6 - LSU
REP 6.1 LSU................................................................................................................... 4-19
REP 6.2 LSU Interlock Switch......................................................................................... 4-19
REPs 7 - Paper Supply
REP 7.1 Bypass Feed Assembly .................................................................................... 4-21
REP 7.2 Registration Solenoid and Tray 1 Pickup Solenoid........................................... 4-21
REP 7.3 Bypass Pickup Roll Rubber .............................................................................. 4-22
REP 7.4 Tray 2 Feed Motor and Pickup Solenoid .......................................................... 4-22
REP 7.5 Bypass Paper Empty Sensor............................................................................ 4-23
REPs 8 - Paper Transport
REP 8.1 Registration Roll Clutch .................................................................................... 4-25
REPs 9 - Xerographics
REP 9.1 CRUM PWB...................................................................................................... 4-27
REPs 10 - Fusing and Copy/Print Transport
REP 10.1 Duplex Motor .................................................................................................. 4-29
REP 10.2 Exit Motor........................................................................................................ 4-29
REP 10.3 Front Duplex Guide Assembly........................................................................ 4-30
REP 10.4 Exit Roll and Exit Idler Assemblies ................................................................. 4-31
REP 10.5 Fuser Terminal................................................................................................ 4-32
REP 10.6 Heat Lamp ...................................................................................................... 4-32
REPs 14 - Scanner
REP 14.1 Scanner Assembly.......................................................................................... 4-35
REP 14.2 Scanner Components (3635).......................................................................... 4-36
REP 14.3 Scanner Components (3550).......................................................................... 4-38
REPs - 28 External Covers
REP 28.1 External Covers .............................................................................................. 4-41
REP 28.2 Outbin Assembly............................................................................................. 4-42
REP 28.3 Front Mid Cover.............................................................................................. 4-43
ADJs 1 - Standby Power
ADJ 1.1 Machine Settings............................................................................................... 4-45
ADJs 5 - Document Transport
ADJ 5.1 DADF Side Edge Registration Adjustment........................................................ 4-47
ADJs 8 - Paper Transport
ADJ 8.1 Lead Edge Registration Adjustment.................................................................. 4-49
ADJ 8.2 Side Edge Registration Adjustment................................................................... 4-51