Xerox WorkCentre 6655 Service Manual and Parts Catalog

Accurate, clear and concise text, combined with detailed illustrations, lists of error code, instruction and diagrams, guide you through procedure of repair, remediate, maintenance and adjustments your copier, printer or scanner.
Present manual Xerox WorkCentre 6655 contain clear instructions and procedures on how to fix the problems occurring in your equipment.
The information contained in this repair manual is necessary for the repair, but also prevention, resulting in a longer life of your equipment.
Format of the manual: PDF, makes it easy to navigate, instant download and print. English language.
To see what contain, please read table of contents:

About This Manual
How To Use This Manual
Service Safety Summary
Symbols Used On The Product
Voltage Measurement and Specifications
Health and Safety Incident Reporting
Regulatory Specifications
Translation of Warnings
WorkCentre 6655 Overview
Options Overview
Consumables and Maintenance
Product Codes and Serial Number Range

Service Call Procedures
SCP 1 Initial Actions
SCP 2 First Call Actions
SCP 3 Normal Call Actions
SCP 4 Fault Analysis
SCP 5 Subsystem Maintenance
SCP 6 Final Actions
SCP 7 Configurations and Options


IQ1 Image Quality Entry
IQ2 Light or Undertoned Print
IQ3 One Color is Light or Undertoned on the Print
IQ4 Unfused Image
IQ5 Random Spots
IQ6 Blank Print or Missing One Color
IQ7 Vertical Process Streaks
IQ8 Pitched Color Dots
IQ9 Vertical Blanks (line, band, spots)
IQ10 Ghosting
IQ11 Light-Induced Fatigue
IQ12 Fog, Background Contamination
IQ13 Bead-Carry-Out (BCO)
IQ14 Jagged Characters
IQ15 Horizontal Bands (voids, streaks)
IQ16 Auger Mark
IQ17 Wrinkled/Stained Paper
IQ18 Leading Edge Paper Damage
IQ19 Incorrect Top and Side Margins
IQ20 Color Registration is Out of Alignment
IQ21 Images are Skewed

Repair Procedures
REP 1.1.2 IIT Front Cover
REP 1.1.3 IIT Front Bottom Cover
REP 1.1.4 Right Upper UI Base Cover
REP 1.1.6 Left UI Base Cover
REP 1.2.1 Control Panel Assembly
REP 1.2.2 Upper Rear UI Cover
REP 1.2.3 UI Hinge Cover
REP 1.2.9 Control Panel UI Cable
REP 1.2.98 UI Hinge Assembly
REP 2.1.1 Laser Unit Assembly
REP 3.1.1 Main Drive Assembly
REP 3.1.2 Waste Drive Assembly
REP 3.1.8 Drive Shaft Assembly
REP 3.1.9 Waste Bearing Assembly
REP 4.1.6 S3 Rear Frame
REP 4.1.13 Main Fan
REP 4.1.17 Toner Full Sensor
REP 4.1.97 Left Rear Latch
REP 4.1.98 Foot Assembly
REP 4.1.99 Right Rear Latch
REP 5.1.1 Upper Dispenser Motor Assembly
REP 5.1.2 Dispenser Motor
REP 5.1.4 Dispenser Assemblies Y, M, C, K
REP 5.1.8 Toner Cartridges Y, M, C, K
REP 6.1.5 Waste Box Lock
REP 6.1.6 Left Transfer Belt Guide Assembly
REP 6.1.14 Color Toner Density (CTD) Sensor Assembly
REP 6.1.97 Transfer Belt Assembly
REP 6.1.98Transfer Belt Right Latch Kit
REP 6.1.99 Coupling Kit
REP 7.1.1 Fuser Assembly
REP 8.1.1 Transfer CRUM Connector Assembly
REP 8.1.6 Cleaner Assembly
REP 8.1.7 Waste Box Assembly
REP 8.1.95 CRU Xerographic Development Assembly (Imaging Unit)
REP 9.1.1 IOT 550 Cassette Assembly
REP 9.1.96 Feed Roller Assembly
REP 9.1.97 Cassette Retard Holder Assembly
REP 10.1.1 Optional 550-Sheet Feeder
REP 10.1.2 550 Option Left-Side Cover and Frame
REP 10.1.6 550 Option Cassette Stopper
REP 10.1.8 550 Option Feed Clutch Assembly
REP 10.1.9 550 Option Drive Assembly
REP 10.1.10 550 Option Feeder Board
REP 10.1.11 550 Option Size Switch Assembly
REP 10.1.13 550 Option Drawer1 Feeder Harness Assembly
REP 10.2.1 550 Option Main Feed Assembly
REP 10.2.2 550 Option Registration Clutch Assembly
REP 10.2.3 550 Option Feed Roller Assembly
REP 13.1.98 Bypass TA1 Roller Assembly
REP 13.1.99 Bypass TA2 Roller Assembly
REP 13.2.1 Bypass Tray Frame Assembly
REP 13.2.4a Bypass Tray No Paper Sensor
REP 13.2.4b Bypass Tray Sensor
REP 13.2.10 Bypass Tray Feed Roller Assembly
REP 13.2.98 Bypass Tray Feed Roller Assembly Kit
REP 13.2.99 Bypass Tray Feed Solenoid Assembly
REP 13.3.1 Bypass Tray Assembly
REP 13.3.2 Bypass Tray Cover Assembly
REP 13.3.4 Bypass Tray Lower Cover
REP 13.3.5 Bypass Tray Chute Assembly
REP 13.3.98 Bypass Tray Separator Roller Assembly
REP 13.3.99 Bypass Tray Pinch Roller Assembly
REP 14.1.1 Duplex Assembly
REP 14.1.4 Rear Hinge Bracket
REP 14.1.99 CRU Transfer Roller Assembly
REP 15.1.4 Lower and Opt 550 Registration Chutes
REP 15.1.6 Upper Transfer Belt Chute Assembly
REP 15.1.8 Registration Clutch Assembly
REP 15.1.10 Cassette Stopper
REP 15.1.98 Duplex Chute Assembly
REP 15.1.99 Registration Chute Assembly Kit
REP 15.2.1 Registration Chute Assembly
REP 15.2.2 Right / Left Registration Bearings
REP 15.2.5 Duplex Clutch Assembly
REP 15.2.6 550 Option Feed Clutch Assembly
REP 15.2.7 Feed Roller Assembly
REP 15.2.10 No Paper Actuator
REP 17.1.1 Exit Assembly
REP 17.1.10 Stack Full Actuator
REP 17.1.21 Exit Drive Assembly
REP 18.1.11 MCU Board
REP 18.1.12 Development HVPS Board
REP 18.1.16 Transfer HVPS Board
REP 18.1.19 Drawer 1 Feeder
REP 18.1.22 Front Door Interlock Photo Sensor
REP 18.1.23 Transfer HVPS Harness
REP 18.1.99 Varistor
REP 18.2.2 IIT MCU Board Assembly
REP 18.2.4 Hard Disk Package Kit
REP 18.2.6 IP (ESS) Board
REP 18.2.7 IP (ESS) Plate Assembly
REP 18.2.8 IP (ESS) Box
REP 18.2.9 DDR3 DIMM Module Assembly
REP 18.2.10 SD Card
REP 18.2.11 Fax Board
REP 18.2.13 Fax USB Cable
REP 18.2.15 Front USB Cable Assembly
REP 18.2.16 IP (ESS) Fan
REP 18.3.2 LVPS
REP 18.3.9 Stapler Assembly
REP 18.3.12 Stapler Sub LVPS
REP 18.3.99 AC Inlet Harness Assembly
REP 18.4.2 Drive Harness Assembly
REP 18.4.3 Main Harness Assembly
REP 18.4.5 Top Harness Assembly
REP 19.1.1 Top Cover Assembly
REP 19.1.20 Front Door Assembly
REP 19.1.28 Staple Box
REP 19.1.96 Right Side Door Assembly
REP 19.1.97 Right Cover Assembly
REP 19.1.98 Right Interlock Switch Assembly
REP 19.1.99 Stapler Right Side Cover
REP 19.2.3 Left Side IF Cover
REP 19.2.4 Top Exit Cover
REP 19.2.98 Rear Cover Assembly
REP 19.2.99 Left Cover Assembly
REP 51.1.1 DADF Assembly
REP 51.1.9 DADF Hinges
REP 51.1.11 DADF Input Tray Assembly
REP 51.1.14 Scanner (IIT) Assembly
REP 51.1.97 DADF Pick-Up Module
REP 51.1.98 DADF Top Cover Assembly
Adjustments & Cleaning
ADJ 1.1 Altitude Adjustment
ADJ 2.1 Laser Lens Cleaning
ADJ 5.1 Color Registration Adjustment
ADJ 6.1 Color Toner Density Sensors Cleaning
ADJ 6.2 Transfer Belt Offsets Adjustment
ADJ 6.3 Transfer Roller Bias Adjustment
ADJ 7.1 Fuser Adjustment
ADJ 9.1 Paper Type Adjustment

UI Base
PL 1.1 UI Base
PL 1.2 Console UI
PL 2.1 ROS
PL 3.1 Drive
PL 5.1 Dispenser
PL 6.1 Transfer
PL 7.1 Fuser
PL 8.1 Xerographics
PL 9.1 Tray
Option Feeder
PL 10.1 Option Feeder (1 of 3)
PL 10.2 Option Feeder (2 of 3)
PL 10.3 Option Feeder (3 of 3)
PL 13.1 MSI (1 of 3)
PL 13.2 MSI (2 of 3)
PL 13.3 MSI (3 of 3)
PL 14.1 Duplex
PL 15.1 Registration/Feeder (1 of 2)
PL 15.2 Registration/Feeder (2 of 2)
PL 17.1 Exit
PL 18.1 Electrical (1 of 4)
PL 18.2 Electrical (2 of 4)
PL 18.3 Electrical (3 of 4)
PL 18.4 Electrical (4 of 4)
PL 19.1 Cover (1 of 2)
PL 19.2 Cover (1 of 2)

General Procedures
GP 1 Service Diagnostics Entry and Exit
GP 2 Fault Codes and History Logs
GP 3 Customer Administration Tools
GP 4 How to Switch Off or Switch On the Printer
GP 5 Service Copy (Tools) Mode
GP 6 Electrostatic Discharge Prevention
GP 7 Machine Specifications
GP 8 General Disassembly Precautions
GP 9 Installing System Software
GP 10 How to Check a Motor
GP 11 How to Check a Sensor
GP 12 How to Check a Solenoid or Clutch
GP 13 How to Check a Switch
GP 14 Cloning Network Configurations
GP 15 PWS AltBoot
GP 16 Separate System Modules
GP 17 External Fax Line Test
GP 18 Printing Reports
GP 19 Intermittent or Noise Problem
GP 20 How to Safely Lift or Move the Printer
GP 21 Machine Lubrication
GP 22 Installation Space Requirements
GP 23 First Print Output Time
GP 24 Restriction of Hazardous Substances (RoHS)
GP 25 Remote Control Panel
GP 26 Media Specifications
GP 27 Environmental Data
GP 28 Toner CRUM Conversion
GP 29 How to Check a Dispenser Motor
GP 30 IP (ESS) Specifications
GP 31 IIT Specifications
GP 32 Fax Specifications
GP 33 Interior and Exterior Cleaning
Diagnostic Utilities
dC104 Usage Counters
dC108 Software Version
dC120 Fault Counters
dC122 Fault History
dC131 NVM Read/Write
dC132 Serial Number Restore
dC135 CRU/HFSI Status
dC140 Analog Monitor
dC188 Service Mode Exit
dC301 NVM Initialization
dC305 UI Test
dC312 Network Echo Test
dC330 Component Control
dC361 NVM Save and Restore
dC612 Print Test Pattern
dC919 Color Balance Adjustment
dC945 IIT Calibration
dC1033 Slave Initialization
Change Tags
Change Tags

Plug and Jack Locations
How to Use the Plug / Jack Location List
Harness Routing
System Wiring Diagrams
Wiring Diagrams
Subsystem Wiring Diagrams

WorkCentre 6655 Operational Overview
Media Handling
Major IOT Assemblies
Major IIT Assemblies
WorkCentre 6655 Options

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