Xerox COLORQUBE 8870

October 2012
4-1
ColorQube 8570/8870 Service Manual
Repairs and Adjustments
Xerox Internal Use Only - Revised, 3rd Revision
4 Repairs and Adjustments
Disassembly Overview
Disassembly Overview.................................................................................................... 4-3
Cover
REP 1.1 Front Door/ Tray 1 (MPT) Assembly................................................................. 4-5
REP 1.5 Control Panel Cover ......................................................................................... 4-6
REP 1.6 Control Panel .................................................................................................... 4-7
REP 1.7 Exit Cover ......................................................................................................... 4-7
REP 1.8 Ink Loader......................................................................................................... 4-8
REP 1.9 Ink Loader Bezel............................................................................................... 4-9
REP 1.10 Left Side Cover............................................................................................... 4-10
REP 1.11 Right Side Cover............................................................................................. 4-11
REP 1.12 Drum Maintenance Door................................................................................. 4-11
REP 1.13 I/O Access Door.............................................................................................. 4-12
REP 1.14 Waste Tray Cover........................................................................................... 4-12
REP 1.15 Waste Tray ..................................................................................................... 4-14
REP 1.16 Drum Maintenance Unit.................................................................................. 4-14
REP 1.17 Tray 1 Arm...................................................................................................... 4-15
REP 1.18 Tray 1 (MPT) Pick Roller Assembly................................................................ 4-16
Imaging
REP 2.1 Funnel Cap ....................................................................................................... 4-19
REP 2.2 Jetstack Cap..................................................................................................... 4-19
REP 2.3 Printhead Assembly.......................................................................................... 4-20
REP 2.4 Drum Assembly ................................................................................................ 4-29
REP 2.5 Y-Axis Belt ........................................................................................................ 4-34
REP 2.6 Printhead Wiper and Wiper Drive Belt.............................................................. 4-34
REP 2.8 Purge Pressure Pump ...................................................................................... 4-35
REP 2.9 Left and Right Printhead Restraints.................................................................. 4-36
REP 2.11 Drum Maintenance Camshaft......................................................................... 4-38
REP 2.12 Transfix Camshaft........................................................................................... 4-39
REP 2.13 Stripper Carriage Assembly/ Transfix Roller................................................... 4-40
REP 2.15 Y-Axis Tension Spring.................................................................................... 4-42
REP 2.16 Transfix Load Module ..................................................................................... 4-42
REP 2.17 Drum Maintenance Pivot Plate/ Drum Wiper Blade Assembly ....................... 4-45
REP 2.20 Preheater and Deskew Assembly................................................................... 4-48
REP 2.21 Transfix Arm Kit (with Pins) ............................................................................ 4-50
REP 2.22 X-Axis Bias Spring Hook, X-Axis Roll Adjuster Spring ................................... 4-52
REP 2.24 X-Axis Bias Spring.......................................................................................... 4-53
Paper Path
REP 3.1 Inner Simplex Guide with Pre-deskew Sensor and Harness............................ 4-55
REP 3.2 Lower Inner Duplex Guide................................................................................ 4-56
REP 3.3 Lower Exit Guide Assembly.............................................................................. 4-56
REP 3.4 Outer Duplex Guide.......................................................................................... 4-57
REP 3.5 Upper Duplex Guide and Solenoid ................................................................... 4-57
REP 3.7 Takeaway Roller............................................................................................... 4-58
REP 3.8 Duplex Roller .................................................................................................... 4-59
REP 3.9 Separator Pad Kit.............................................................................................. 4-60
REP 3.10 Pick Assembly and Retard Roller ................................................................... 4-61
REP 3.12 525-Sheet Feeder........................................................................................... 4-62
REP 3.13 Exit Module ..................................................................................................... 4-63
REP 3.14 Takeaway Guide............................................................................................. 4-65
Drive
REP 4.1 Preheater Lift Solenoid ..................................................................................... 4-67
REP 4.2 Y-Axis Motor Assembly..................................................................................... 4-67
REP 4.3 Tray 1 Pick Solenoid......................................................................................... 4-69
REP 4.4 Head Tilt Solenoid............................................................................................. 4-70
REP 4.5 Media Drive Assembly...................................................................................... 4-72
REP 4.6 Tray 2 Lift Motor................................................................................................ 4-74
REP 4.7 Electronics Module Fan .................................................................................... 4-75
REP 4.8 Head Tilt Gear................................................................................................... 4-75
REP 4.9 Tray 2 Lift Motor Gear....................................................................................... 4-77
REP 4.10 Head Maintenance Clutch............................................................................... 4-78
REP 4.11 X-Axis Motor ................................................................................................... 4-78
REP 4.12 Drum Cooling Fan........................................................................................... 4-79
REP 4.13 Process Drive.................................................................................................. 4-79
Electrical
REP 5.1 Electronics Module............................................................................................ 4-83
REP 5.2 Hard Disk Drive................................................................................................. 4-84
REP 5.3 RAM.................................................................................................................. 4-85
REP 5.4 NVRAM............................................................................................................. 4-87
REP 5.5 Configuration Card............................................................................................ 4-88
REP 5.6 Circuit Boards (Power Supply, Main Controller, Power Control)....................... 4-88
REP 5.9 Wave Amplifier.................................................................................................. 4-93
REP 5.10 I/O Board......................................................................................................... 4-96
Sensors and Actuators
REP 6.1 Paper Size Switch............................................................................................. 4-97
REP 6.2 No Paper Sensor .............................................................................................. 4-98
REP 6.3 Paper Height Sensor......................................................................................... 4-99
REP 6.5 Drum Temperature Sensor............................................................................... 4-100
REP 6.6 Front Door and Exit Door Interlock Switches.................................................... 4-100
REP 6.7 Waste Tray Detect Sensor................................................................................ 4-101
Adjustments and Calibrations
ADJ 1.1 Wiper Blade Alignment...................................................................................... 4-103
ADJ 1.2 Homing the Printhead Forward to Print Position ............................................... 4-104
ADJ 1.3 Process Drive Alignment................................................................................... 4-105
ADJ 1.4 Manual Printhead Parking ................................................................................. 4-106
ADJ 1.5 Center the Printhead ......................................................................................... 4-108