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Make/Model Information:

  • Brand:   Xerox
  • Models included:
    • Xerox Phaser 3450

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   181
  • File size:  ∼ 8.36  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMXX-1016

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Service
Manual
Phaser
Laser Printer
Contents xiii
Contents
Service Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iii
Symbols Marked on the Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .iv
Power Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Electrostatic Discharge (ESD) Precautions . . . . . . . . . . . . . . . . . . . . . . . . .vi
Service Safety Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Regulatory Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix
1 General Information
Printer Introduction and Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printer Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Parts of the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Exterior. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Phaser 3450 Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Phaser 3450 Laser Printer Rear View . . . . . . . . . . . . . . . . . . . . . 1-6
Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
Supply Life Counter Behavior. . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Printer Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Physical Dimensions and Clearances . . . . . . . . . . . . . . . . . . . . . 1-11
Functional Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Duplex Printing Media Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Media and Tray Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
2 Theory of Operation
Overview of the Phaser 3450 Laser Printer . . . . . . . . . . . . . . . . . . . . . . . 2-2
Summary of the Printing Process . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Print Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Printer Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Paper Size Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Selective Control; Paper Pick . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Laser Light Intensity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Process Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Toner Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Fuser Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Paper Path of the Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Duplex Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
xiv Phaser 3450 Laser Printer
Major Assemblies and Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Print Cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Laser Scan Unit (LSU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Transfer Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Fuser Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Paper Feed Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Paper Out Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Paper Feed Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Registration Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Paper Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Fuser Exit Sensor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Duplex Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
3 Error Messages and Codes
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Servicing Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Using the Troubleshooting Procedures . . . . . . . . . . . . . . . . . . . . 3-5
General Notes on Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . 3-6
Voltage Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Service Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Service Diagnostic Front Panel Button Descriptions . . . . . . . . . . 3-9
Service Diagnostics Menu Map . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Error Messages and Codes Summary Table . . . . . . . . . . . . . . . . . . . . . 3-13
Fuser Failure/Low Heat/or Overheat/ 0x56/0x57/0x58. . . . . . . . . . . . . . 3-14
LSU Error or 0x5A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Jam At Tray [1] [2] [3] or 0x01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Jam At Top(0x02) or Jam At Exit (0x03) . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Jam At Duplex (0x04) or Jam At Tray (0x05) . . . . . . . . . . . . . . . . . . . . 3-18
Output Tray Is Full or 0x44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Replace Print Cartridge (0x53) or Invalid Print Cartridge (0x55). . . . . . 3-20
4 General Troubleshooting
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Preliminary Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Front Panel Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
No Front Panel Display after Power is Turned ON . . . . . . . . . . . . 4-3
Front Panel LED is On, Front Panel Display is Blank . . . . . . . . . . 4-3
Front Panel Continually Displays “Close Cover or Check Cartridge”. .
Front Panel Continually Displays “No Paper in Tray [x]” . . . . . . . 4-3
Front Panel Continually Displays “Output Tray Is Full”. . . . . . . . . 4-4
Paper Size Switch Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Power Supply Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Contents xv
Media Jams and the Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Media-based Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Paper Mis-feed from Tray 1 (MPT). . . . . . . . . . . . . . . . . . . . . . . . 4-6
Paper Mis-feed from Tray 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Paper Mis-feed from Tray 3 (Optional Feeder) . . . . . . . . . . . . . . . 4-8
Jam At Tray [1] [2] [3] (Jam 0) . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Jam At Top (Jam 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Jam At Exit (Jam 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Jam At Duplex (Duplex Jam 1). . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Jam At Tray/Remove Tray 2 (Duplex Jam 2) . . . . . . . . . . . . . . . 4-13
CRUM Toner Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
5 Print-Quality Troubleshooting
Print-Quality Problems Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Defects Associated with Specific Printer Components. . . . . . . . . . . . . . . 5-2
Front Panel Test Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Deletions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Fusing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Registration and Skew . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Skips or Smears. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Print-Quality Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
6 Adjustments and Calibrations
Margin Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Resetting NVRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
7 Cleaning and Maintenance
Service Preventive Maintenance Procedure . . . . . . . . . . . . . . . . . . . . . . . 7-2
Recommended Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Printing a Cleaning Sheet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
8 Service Parts Disassembly
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
Standard Orientation of the Printer. . . . . . . . . . . . . . . . . . . . . . . . 8-2
General Notes on Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
Removing Service Parts and Consumables . . . . . . . . . . . . . . . . . . . . . . . 8-4
Print Cartridge Removal (PL 9.1.8) . . . . . . . . . . . . . . . . . . . . . . . 8-4
Transfer Roller Removal (PL 9.1.23) . . . . . . . . . . . . . . . . . . . . . . 8-4
Fuser Removal PL 9.3.40) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
xvi Phaser 3450 Laser Printer
Print Engine Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Right Cover Assembly (PL 9.2.2). . . . . . . . . . . . . . . . . . . . . . . . . 8-7
Left Cover Assembly (PL 9.2.4) . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
Top Cover Assembly (PL 9.2.1) . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
Tray 1 Cover Assembly (PL 9.1.2) . . . . . . . . . . . . . . . . . . . . . . . 8-10
Retard Assembly (PL 9.3.7). . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Front (Inner) Cover (PL 9.2.5) . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
Tray 1 Lift Plate (PL 9.1.3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-13
Rear Cover Assembly (PL 9.2.3) . . . . . . . . . . . . . . . . . . . . . . . . 8-14
Front Panel Assembly (PL 9.2.1.8) . . . . . . . . . . . . . . . . . . . . . . 8-15
Cover Open Interlock Switch (PL 9.2.1.16) . . . . . . . . . . . . . . . . 8-16
NIC Board (PL 9.1.41) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
Main Board (PL 9.1.10) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-18
Main Drive Assembly (PL 9.1.11) . . . . . . . . . . . . . . . . . . . . . . . 8-19
Tray 2 Solenoid (PL 9.1.28). . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
Tray 2 No Paper Sensor (PL 9.3.44) . . . . . . . . . . . . . . . . . . . . . 8-21
Paper Size Sensor (PL 9.3.36). . . . . . . . . . . . . . . . . . . . . . . . . . 8-22
Exit Motor Drive Assembly (PL 9.1.20) . . . . . . . . . . . . . . . . . . . 8-22
Main Fan Assembly (PL 9.1.19). . . . . . . . . . . . . . . . . . . . . . . . . 8-23
Sub Fan Assembly (PL 9.3.35) . . . . . . . . . . . . . . . . . . . . . . . . . 8-24
Exit Roller Assembly (PL 9.3.21) Transport Roller Assembly
(PL9.3.24) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-25
Laser Assembly (PL 9.1.16). . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-27
Print Cartridge Interconnect Assembly (PL 9.3.53) . . . . . . . . . . 8-29
Registration Transport Assembly (PL 9.1.9) . . . . . . . . . . . . . . . 8-30
Registration Sensor (PL 9.7.10) . . . . . . . . . . . . . . . . . . . . . . . . 8-31
Tray 1 Feed Roller Assembly (PL 9.3.2). . . . . . . . . . . . . . . . . . . 8-31
Tray 1 Pick Roller (PL 9.3.2.4). . . . . . . . . . . . . . . . . . . . . . . . . . 8-35
Tray 2 Retard Assembly (PL 9.3.7) . . . . . . . . . . . . . . . . . . . . . . 8-36
Tray 2 Paper Pick Assembly (PL 9.3.67) . . . . . . . . . . . . . . . . . . 8-36
Tray 2 Pick Roller (PL 9.3.67.3). . . . . . . . . . . . . . . . . . . . . . . . . 8-41
Power Supply Board (PL 9.1.13) . . . . . . . . . . . . . . . . . . . . . . . . 8-42
Duplex Assembly (PL 8.8.2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-45
Exit Sensor (PL 9.3.62) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-45
9 Parts Lists
Serial Number Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
Using the Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Contents xvii
Print Engine Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Main Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-7
Frame 1 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-9
Frame 2 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-12
Fuser Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-15
Main Drive Motor Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-16
Exit Drive Motor Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-17
Registration Transport Assy. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Power Supply/Duplex Assembly. . . . . . . . . . . . . . . . . . . . . . . . . 9-20
Paper Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-21
Optional Lower Feeder Assembly . . . . . . . . . . . . . . . . . . . . . . . . 9-22
Xerox Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-25
10 Wiring Diagrams
Print Engine Interconnect Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
Map 1 Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
Map 2 Connector Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-4
Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
4 Chapter
General
Troubleshooting
In this chapter
Introduction
Preliminary Procedures
Front Panel Troubleshooting
Paper Size Switch Assembly
Power Supply Troubleshooting
Media Jams and the Paper Path
4-2 Phaser 3450 Laser Printer Service Manual
Introduction
This chapter covers the general start-up, Power On Self Test, and power supply
operations of the printer to aid in troubleshooting problems not associated with an
error code or front panel error message. For troubleshooting problems associated with
an error code or front panel error message, notes on how to use the troubleshooting
procedure tables, and how to use service diagnostics, see Chapter 3 "Error Messages
and Codes" on page 3-1.
Troubleshooting procedures will isolate a problem to a specific component or
subassembly, in some cases including the wiring harness.
Preliminary Procedures
1. Is the AC power provided at the wall outlet within specifications for this printer;
either 110 VAC or 220 VAC?
2. Is the AC power cord in good condition (not frayed or broken)?
3. Is one end of the AC power cord connected to the printer?
4. Is the other end of the AC power cord plugged into a grounded three-pronged AC
wall outlet?
5. Is the printer located in an area where the temperature and humidity are moderate
and stable as recommended in the General Information section?
6. Is the printer located in an area that is free of dust?
7. Is the printer located away from water outlets, steamers, electric heaters, volatile
gases, or open flames?
8. Is the printer shielded from the direct rays of the sun?
9. Does the printer have the correct ventilation space around all sides as
recommended in the "Physical Dimensions and Clearances" on page 1-11?
10. Is the printer sitting on a level and stable surface?
11. Is the paper stock used in the printer as recommended in the "Media and Tray
Specifications" on page 1-14?
12. Does the customer use the printer as instructed in the User Guide?
13. Are consumables replaced at the intervals recommended in "Consumables" on
page 1-9?
14. Is the Print Cartridge properly installed?
15. Are all of the printer assemblies in place and are all printer covers and doors
firmly closed?


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