Contents - service manual
- service terms
- symbols marked on the product
- power source
- general guidelines
- servicing electrical components
- regulatory specifications
- european union
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Table Of Contents
- Printer Introduction and Overview
- Phaser 7750 Printer Configurations
- Parts of the Printer
- Exterior - Rear View
- Phaser 7750 Front Panel Configuration
- Image Processor Board and Rear Panel Host Interface
- Routine Maintenance Items and Consumables
- Printer Specifications
- Mounting Surface Specification
- general information
- Functional Specifications
- Environmental Specifications
- Summary of the Phaser 7750 Print Process
- Paper Path of the Printer
- Paper Size Sensing
- sided printing
- Fuser
- EAHG Toner
- Technology Overview
- Drive Power
- System Power Supplies
- ROS and Regicon Technology Overview
- RegiCon Overview
- Skew (Fine) Setup
- View the RegiCon Patterns
- Sensors
- ATC Sensors
- ADC Sensor
- ADC Output Check
- theory of operation
- Lower Tray Feeders Sensor and Board Locations
- error messages
- Accessing the Printer's Error History
- Service Checklist
- Service RIP (Every Call) Procedures
- Using the Troubleshooting Procedures
- Power On Self Test (POST)
- POST Faults
- post diagnostic test descriptions
- error messages and codes
- Black ATC Sensor Failure, Code 15
- Transfer Roller Retract Failure, Code 21
- st BTR Contact or Retract Failure
- Accumulator Belt Home Position Took Too Long, Code 30 Accumulator Belt Home Position Failure, Code 31
- Accumulator Belt Edge Sensor Failure, Code 32 Accumulator Belt Drive Logic Failure, Code 34
- Unexpected Accumulator Belt Home Sensor Signal, Code 33
- Fuser Main Lamp Failure, Code 35
- Install or Reseat Fuser, Code 41
- Fuser STS (Front) Warm Time Failure, Code 42
- Fuser Sub Lamp Overheat Failure, Code 44
- Fuser STS (Rear) Failure, Code 45
- Fuser STS (Rear) Warm Time Failure, Code 46
- Fan Failure, Code 48
- Imaging Unit Motor Failure, Code 60
- Black Imaging Unit Motor Failure
- Waste Cartridge Full Detection Sensor Failure, Code 78
- Engine Logic Board Failure, Code 80
- Engine Logic Board NVRAM Failure, Code 83
- Tray Lift Failure, Code 87
- Tray 1/MPT Size Sensor (7-274), Code?
- Lower Tray Communication Failure, Code 88
- Reflective Sensor Procedure
- Transmissive Sensor Procedure
- Finisher Stapler Move Sensor On Failure, Code 111 Finisher Stapler Move Sensor Off Failure, Code 112
- Finisher Stapler Failure, Code 113
- Front Tamper Home Sensor Failure, Code 114
- Rear Tamper Home Sensor Failure, Code 115
- Finisher Stacker Height Sensor Off Failure, Code 116
- Finisher Stacker Tray Failure, Code 117
- Finisher Stapler Front Corner On Failure, Code 118 Finisher Stapler Front Corner Off Failure, Code 119
- Finisher Eject Clamp Home Sensor On Failure, Code 120 Finisher Eject Clamp Home Sensor Off Failure, Code 121
- Finisher Decurler Failure, Code 122
- Finisher Set Clamp Failure, Code 123
- Finisher Communication Failure, Code 124
- troubleshooting
- Introduction
- Service Diagnostic Front Panel Button Descriptions
- general troubleshooting
- The Printer Does Not Come to a "Ready" State
- Inoperable Printer Troubleshooting
- Troubleshooting AC Power
- Troubleshooting the Low-Voltage Power Supplies
- VDC Low-Voltage Power Supplies
- Interlock Circuit Diagram
- Media-Based Problems
- Troubleshooting (TCP/IP)
- Windows NT 4.x Troubleshooting (TCP/IP)
- Windows 98 and Windows Me Troubleshooting
- Macintosh Troubleshooting
- Novell NetWare Troubleshooting
- Print-Quality Problems Overview
- Front Panel Test Prints
- Color Test Pages
- Analyzing the Test Pattern
- Solid Fill Pages
- Repeating Defects Page
- Engine Test Prints
- Print Halftones
- Print Fast Scan 8 Tone
- Initial Actions Before troubleshooting any Print-Quality Problems:
- Registration Control (RegiCon) Adjustment Overview
- Coarse and Fine Skew Adjustments
- Center Skew Adjustment
- RegiCon Adjustment Procedures
- RegiCon #1 Fine Skew Adjustment
- RegiCon #2 In/Out Skew Adjustment
- RegiCon #3 Center Skew Adjustment
- RegiCon #4 Coarse Skew Adjustment
- adjustments and calibrations
- Coarse RegiCon Initialization
- ATC Sensor Setup
- Additional Information
- Resetting NVRAM
- Service Diagnostics NVRAM Resets
- Clear Tech Rep Faults
- Service Preventive Maintenance Procedure
- service preventive maintenance procedure
- service parts
- Standard Orientation of the Printer for Disassembly
- General Notes on Disassembly
- replacement procedure
- replacement procedures
- dispense assembly
- main drive assembly
- Print Engine
- Optional Lower Trays
- serial number format
- using the parts list
- Parts List 1.1 Drive Unit
- Part List 1.2 Main Drive Motor Assembly
- Part List 1.3 Steering Motor and MOB
- Part List 2.1 Tray 2
- Part List 2.3 Tray Feeder and Left Lower Cover Assy
- Part List 2.4 Tray 2 Feeder
- Part List 2.6 Registration Transport
- Part List 2.7 Left Cover Unit
- Part List 2.8 Left Cover Assembly: 1 of 2
- Part List 2.9 Left Cover Assembly: 2of 2
- Part List 2.10 Exit Transport Assembly
- Part List 2.14 Tray 1 Feed Assembly
- Part List 3.1 Laser (ROS) Assembly
- Part List 4.1 Xerographic Module: 1 of 2
- Part List 4.2 Xerographic Module: 2 of 2
- Part List 5.1 Lift Unit
- Part List 5.2 Accumulator Belt Assembly
- Part List 5.6 Accumulator Belt Elevator
- Part List 6.1 Developer Unit: 1 of 2
- Part List 6.2 Developer Unit: 2 of 2
- Part List 7.1 Fuser Assembly
- Part List 8.1 Air System
- Part List 9.1 Electrical Components: 1 of 3
- Part List 9.2 Electrical Components: 2 of 3
- Part List 9.3 Electrical Components: 3 of 3
- Part List 10.1 Front Cover
- Part List 10.2 Top Cover and Front Panel
- Part List 10.3 Rear Cover
- Part List 11.1 Inverter Transport
- Part List 12.1 Duplex Unit Assembly
- Part List 13.1 Image Processor and Engine Control Boards
- Part List 16.1 Lower Trays 3/4/5 Assembly
- Part List 16.5 Lower Trays Paper Feeder: 1 of 2
- Part List 16.6 Lower Trays Paper Feeder: 2 of 2
- Part List 16.13 Left Cover Assembly (LTD)
- Part List 16.14 Tray 4/5 Lift Gear Assembly
- Part List 16.15 Electrical Components and Caster
- Part List 16.16 Lower Tray Deck
- Hardware Kits
- wiring diagrams
- Plug/Jack Locations
- Plug/Jack Locator Maps
- Wiring Diagrams
- phaser 7750
- Phaser 7750 Finisher
- Finisher Specifications
- Finisher Assemblies
- Internal Assemblies of the Finisher
- Horizontal Transport Sensor, Interlock and Switch Locations
- Finisher Sensor, Interlock and Switch Locator Map
- Finisher Disassembly
- Horizontal Transport Assembly
- Horizontal Transport Top Open, Front, and Rear Cover
- Horizontal Transport Entrance Upper Cover Assembly
- Horizontal Transport Belts
- Top Tray Full Sensor
- Gate-In Solenoid Assembly
- Finisher Covers
- Stack Height-Sensor Assembly
- Stacker Paper-Sensor Assembly
- Set Clamp Clutch and Gear
- Eject Roll Assembly
- Finisher Control Board, Bracket and Shield
- Stacker Motor Assembly
- Paddle Shaft
- Paper Transport Motor (Motor Assembly Main)
- Cam Bracket Assembly
- Staple Unit Assembly and Motor
- Compiler Tray
- Finisher Wiring Diagrams
- Finisher Service Parts List
- PL 17.2 Gate Assembly
- PL 17.3 Horizontal Transport Assembly: 1 of 2
- PL 17.4 Horizontal Transport Assembly: 2 of 2
- PL 17.5 Covers
- PL 17.6 Top Cover and Eject Roll
- PL 17.7 Paper Transport: 1 of 2
- PL 17.8 Paper Transport: 2 of 2
- PL 17.9 Staple Unit Assembly
- PL 17.10 Compiler Tray Assembly
- PL 17.11 Stacker Elevator Assembly
- PL 17.12 Exit Assembly
- PL 17.13 Electrical Components
- PL 17.14 Finisher Rack (Stand)
- Menu Map
- Service Diagnostic Menu Map
- Service Usage Profile Status Codes
- Missing Chain Link Codes Definitions
- Paper Weight Equivalence Table
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Service Manual xvii8 Service Parts DisassemblyOverview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2Standard Orientation of the Printer for Disassembly . . . . . . . . . . 8-2General Notes on Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3Print Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4Optional Lower Trays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-579 Service Parts ListsSerial Number Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2Using the Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3Parts List 1.1 Drive Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4Part List 1.2 Main Drive Motor Assembly. . . . . . . . . . . . . . . . . . . 9-6Part List 1.3 Steering Motor and MOB . . . . . . . . . . . . . . . . . . . . . 9-7Part List 2.1 Tray 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-8Part List 2.3 Tray Feeder and Left Lower Cover Assy . . . . . . . . . . 9-9Part List 2.4 Tray 2 Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-10Part List 2.6 Registration Transport . . . . . . . . . . . . . . . . . . . . . . 9-11Part List 2.7 Left Cover Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12Part List 2.8 Left Cover Assembly: 1 of 2 . . . . . . . . . . . . . . . . . . 9-13Part List 2.9 Left Cover Assembly: 2of 2 . . . . . . . . . . . . . . . . . . 9-14Part List 2.10 Exit Transport Assembly . . . . . . . . . . . . . . . . . . . 9-15Part List 2.12 Tray 1: 1 of 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16Part List 2.13 Tray 1: 2 of 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17Part List 2.14 Tray 1 Feed Assembly . . . . . . . . . . . . . . . . . . . . . 9-18Part List 3.1 Laser (ROS) Assembly. . . . . . . . . . . . . . . . . . . . . . 9-19Part List 4.1 Xerographic Module: 1 of 2 . . . . . . . . . . . . . . . . . . 9-20Part List 4.2 Xerographic Module: 2 of 2 . . . . . . . . . . . . . . . . . . 9-21Part List 5.1 Lift Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-22Part List 5.2 Accumulator Belt Assembly . . . . . . . . . . . . . . . . . . 9-24Part List 5.6 Accumulator Belt Elevator . . . . . . . . . . . . . . . . . . . 9-25Part List 6.1 Developer Unit: 1 of 2 . . . . . . . . . . . . . . . . . . . . . . 9-26Part List 6.2 Developer Unit: 2 of 2 . . . . . . . . . . . . . . . . . . . . . . 9-28Part List 7.1 Fuser Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-29Part List 8.1 Air System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-30Part List 9.1 Electrical Components: 1 of 3 . . . . . . . . . . . . . . . . 9-32Part List 9.2 Electrical Components: 2 of 3 . . . . . . . . . . . . . . . . 9-34Part List 9.3 Electrical Components: 3 of 3 . . . . . . . . . . . . . . . . 9-35Part List 10.1 Front Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-36Part List 10.2 Top Cover and Front Panel. . . . . . . . . . . . . . . . . . 9-37Part List 10.3 Rear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-38Part List 11.1 Inverter Transport . . . . . . . . . . . . . . . . . . . . . . . . 9-39Part List 12.1 Duplex Unit Assembly . . . . . . . . . . . . . . . . . . . . . 9-40Part List 13.1 Image Processor and Engine Control Boards . . . 9-41Part List 16.1 Lower Trays 3/4/5 Assembly . . . . . . . . . . . . . . . . 9-42Part List 16.5 Lower Trays Paper Feeder: 1 of 2 . . . . . . . . . . . . 9-43Part List 16.6 Lower Trays Paper Feeder: 2 of 2 . . . . . . . . . . . . 9-44
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