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Xerox Phaser 7400 Service Manual

Xerox Phaser 7400
682 pages
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Phaser
®
7400
color printer
Service
Manual
Book 1: Print Engine

Table of Contents

Other manuals for Xerox Phaser 7400

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Xerox Phaser 7400 Specifications

General IconGeneral
ColorYes
Print technologyLaser
Maximum resolution600 x 1200 DPI
Time to first page (black, normal)12 s
Print speed (black, normal quality, A4/US Letter)40 ppm
Print speed (color, normal quality, A4/US Letter)36 ppm
Storage mediaHDD
Internal memory512 MB
Processor modelPowerPC
Maximum internal memory1 MB
Internal storage capacity20 GB
Total input capacity800 sheets
Maximum input capacity3000 sheets
Paper tray 2 input capacity350 sheets
Auto document feeder (ADF) input capacity1650 sheets
Maximum print size297 x 420 mm
Paper tray media typesEnvelopes, Labels, Transparencies
Non-ISO print media sizesExecutive (184 x 267mm), Folio (media size), Letter (media size), Statement (140 x 216mm), Legal (media size)
Maximum ISO A-series paper sizeA3
Power requirements100-240V, 50/60Hz
Networking featuresFast Ethernet
Supported media weight(s)270 g/m²
Maximum operating temperature range (T-T)10 - 32 °C
CertificationFCC p.15 A, CE
Storage temperature (T-T)-20 - 60 °C
Operating temperature (T-T)-4 - 140 °F
Storage relative humidity (H-H)10 - 95 %
Operating relative humidity (H-H)20 - 80 %
Maximum duty cycle150000 pages per month
Weight and Dimensions IconWeight and Dimensions
Dimensions (WxDxH)1438 x 623 x 975 mm

Summary

Manual Organization

Book 1 - Print Engine

Focuses on the print engine, covering specifications, theory, diagnosis, and repair.

Book 2 - Options

Covers option repair, theory, FRU replacement, parts lists, and wiring diagrams.

Section 1 - General Information

Printer Introduction and Overview

Describes the service manual and provides a general overview of the printer.

Printer Configurations

Lists available printer configurations and their differences.

Metered Printing

Explains metered printing, its operation, and related cartridges.

Parts of the Printer

Identifies the printer's external components with front and rear views.

Control Panel

Describes the control panel's components, buttons, and shortcuts.

Image Processor Board

Details components installed on the Image Processor Board.

Printer Options

Lists optional features like hard drives, memory upgrades, and feeders.

Configuration Card

Identifies printer configuration and stores network parameters.

550-Sheet Feeder

Increases input capacity; attaches below Tray 2.

1650-Sheet Feeder

Adds three 550-sheet trays to the printer.

Duplex Unit

Adds two-sided printing functionality.

Finisher

Increases output capacity with punching, stapling, and stacking.

Maintenance Items

Lists printer parts with limited life requiring periodic replacement.

Consumables

Lists the four toner cartridges used in the printer.

Specifications

Details memory, consumable life, electrical, and physical specs.

Electrical Specifications

Provides voltage, frequency range, and power consumption details.

Physical Dimensions and Clearances

Lists physical size and required clearance for components.

Minimum Clearances

Illustrates required space around the printer for operation.

Functional Specifications

Details printing process, resolution, and operating modes.

First Print Output Time

Specifies time from command receipt to page delivery.

Image Specifications

Defines print area, margins, skew, registration, and linearity.

Environmental Specifications

Lists operating temperature, humidity, and altitude limits.

Media and Tray Specifications

Lists supported paper sizes, weights, and tray capacities.

Media and Tray Specifications

Lists supported paper types, weights, and tray capacities.

Section 2 - Theory of Operation

Phaser 7400 Operational Overview

Explains the printer's electrophotographic recording principles.

Imaging Unit

Describes the function of each imaging unit component.

LED Heads

Explains how LED Heads create a latent image.

Fuser

Details how the Fuser bonds toner to paper using heat and pressure.

Fuser Components (Continued)

Lists Fuser components and their functions.

Transfer Unit

Explains how the Transfer Unit transports media and attracts toner.

Print Process Summary

Illustrates and describes the steps in producing a full-color print.

1. Charging

Describes the charge roller's function in applying negative charge to the drum.

2. Exposure

Explains how LED Heads form a latent image on the drum.

3. Development

Details how the Developer Roller applies toner to the latent image.

4. Transfer

Explains how toner is transferred from the drum to the paper.

5. Fusing

Describes how the Fuser bonds toner to paper using heat and pressure.

6. Transfer Unit Cleaning

Explains how toner is removed from the Transfer Unit belt.

7. Imaging Unit Cleaning

Describes how toner is scraped off the drum.

8. Paper Exit

Details how paper exits to the Top or Side Output Trays.

9. Waste Toner Recovery

Explains how excess toner is moved to the Waste Toner Reservoir.

Printer Controls

Covers print-quality modes and color registration.

Print-Quality Modes

Lists four print-quality modes: Automatic, Standard, Enhanced, Photo.

Color Registration Control

Explains how color images are aligned using sensors.

Color Registration Control

Explains how color images are aligned using sensors.

Automatic Density Control

Monitors toner density using test patches and ADC Sensor.

Selective Control: Paper Pick

Describes default and optional tray identification.

Image Transfer Control

Monitors environmental conditions for optimal transfer voltage.

Fuser Temperature Control

Adjusts Fuser temperature based on media weight and environmental factors.

Consumable Control

Determines new/in-use status of maintenance units via a fuse.

Sensors

Describes various sensor types and their functions in the printer.

Sensor Types

Details the four types of sensors used: Photo, Microswitches, Thermistors, Hall-Effect.

Photo Sensors

Explains photo-reflective and photo-receptive sensors.

Sensors

Lists sensor types and their functions.

Microswitches

Used for paper size and door interlocks.

Thermistors

Used for Fuser temperature sensing.

Hall-Effect

Detects magnetic properties for waste toner and transfer belt monitoring.

List of Sensor and Interlock Types

Table listing sensor names, types, and functions.

Sensors in the Printer

Illustrates the location of each sensor within the printer.

Sensor Functions

Lists the function and sensor state for various sensors.

Sensor Functions (Continued)

Lists sensor functions and states.

Paper Level Detection

Explains how paper level is detected in trays.

Paper Present Detection

Describes how the absence of paper is detected.

Transparent Media Detection

Explains OHP Sensor function for transparent media.

Automatic Media Thickness Detection

Adjusts fuser temp and speed based on media weight.

Paper Size Detection

Explains how paper size is sensed using Paper Size Switches.

Jam Detection

Describes how the printer checks for and detects paper jams.

Interlock Detection

Explains how interlock switches stop printer activity.

Toner Detection

Describes how the Low Toner Sensor detects toner levels.

Toner Full State

Explains how toner full state is determined by Agitation Bar timing.

Toner Low State

Describes how toner low condition is detected by Agitation Bar timing.

Toner Supply

Explains how toner is supplied to the Imaging Units.

Input Paper Path

Details input paper paths.

Paper Fed from Tray 1 (MPT)

Details the paper path for media fed from Tray 1.

Paper Fed from Tray 2

Details the paper path for media fed from Tray 2.

Paper Fed from Optional Trays

Describes paper path from optional trays 3 through 6.

Duplex Unit

Explains media movement through the Duplex Unit for two-sided printing.

Output Paper Path

Details paper paths exiting the Fuser to various output locations.

Fuser and Exit

Describes Fuser and Exit rollers driven by the Fuser Motor.

Top Output Tray

Describes the facedown, 500-sheet tray on the printer's Top Cover.

Side Output Tray

Describes the faceup, 250-sheet tray on the printer's left side.

Finisher/Inverter

Summarizes output path through the Finisher.

Drive Assemblies

Shows the location of all printer motors.

Imaging Unit Drive Motors

Explains how Imaging Unit Motors drive drums and agitation bars.

Transfer Unit Motor

Describes the clockwise rotation of the Transfer Unit motor.

Fuser Motor

Explains the Fuser Motor drives the Fuser Heat and Pressure Rollers.

Toner Dispense Motors

Explains the function of CM and YK Toner Dispense Motors.

Duplex Drive Motors

Describes the two motors used to capture and transport paper in the Duplex Unit.

Chassis Assemblies

Contains assemblies related to the printer's frame and structure.

Basket Assembly

Allows Imaging Units to be raised for jam clearance.

Waste Toner Recovery

Moves collected toner to the Waste Toner Reservoir.

Registration Assembly

Shows components associated with the Registration Assembly.

Exit Assembly

Handles media exiting the Fuser using rollers, solenoids, and gates.

Job Offset Assembly

Describes the motor and gear system for shifting media.

Trays

Details standard input trays including Tray 1 (MPT) and universal trays.

Tray 1 (MPT)

Feeds standard and custom size media into the printer.

Universal Trays

Trays 2 through 6 with adjustable guides for paper size sensing.

Universal Feeder

Describes the feeder's sensors and board for communicating information.

Side Output Tray

Provides faceup output capacity with stack level monitoring.

Electrical

Overviews major electrical components like boards, sensors, and fans.

Control Panel

The primary interface with display, keypad, and status LED.

Image Processor Board

Receives, buffers, and sends data to the print engine.

Engine Control Board

Synchronizes print process by controlling heads, motors, fans, sensors.

Registration Sensor Board

Includes sensors to monitor color registration.

LED Relay Board

Distributes power from LVPS to the four LED Heads.

Imaging Unit Sensor Board

Communicates with Engine Control Board, supplies voltage to fans.

Motor Driver Board

Receives +24 V from LVPS and distributes power/control signals to motors.

Feeder Board

Communicates sensor info to Motor Driver Board and provides connections.

HVPS

Supplies high-voltage to Transfer Unit and Imaging Units.

LVPS

Supplies AC power and generates low-voltage DC power for logic circuits.

Front Sensor Board

Communicates with Motor Driver Board and connects to various sensors.

Rear Sensor Board

Communicates with Engine Control Board and connects to sensors.

Fans

Circulates air throughout the printer; notes fan orientation.

Solenoids and Clutches

Used to actuate gates and rollers in the Print Engine.

Section 3 - Error Messages and Codes

Introduction

Describes error messages, codes, and their entry into troubleshooting.

Accessing Fault History

Lists three ways to access fault history records.

Servicing Instructions

Outlines the service technician's path for troubleshooting.

Messages, Codes, and Procedures

Correlates diagnostic output with troubleshooting procedures.

Error Message Abbreviations

Lists common abbreviations used in messages and procedures.

Jam Locator

Illustrates door designators for jam location error codes.

Error Message Summary

Lists errors, codes, and page references for corrective procedures.

Error Message Summary (Continued)

Continues the list of errors, codes, and corrective procedures.

Error Message Summary (Continued)

Continues the list of errors, codes, and corrective procedures.

Fatal Errors

Lists fatal errors and their corresponding page references.

Fatal Errors (Continued)

Continues the list of fatal errors and their page references.

Fatal Errors (Continued)

Continues the list of fatal errors and their page references.

Fatal Errors (Continued)

Continues the list of fatal errors and their page references.

Fatal Errors (Continued)

Continues the list of fatal errors and their page references.

Using the Troubleshooting Procedures

Provides guidance on how to use troubleshooting procedures effectively.

Measurement Techniques

Explains how to perform electrical and mechanical measurements.

Jam Error Procedures

Basic steps to troubleshoot jam errors, ruling out mechanical factors.

Jam at Door A Open Door A to Clear

Procedure for clearing jams at Door A.

Jam at Door A Open Door A to Clear

Troubleshooting procedure for jams at Door A.

Jam at Door A Open Door A to Clear

Troubleshooting procedure for jams at Door A.

Jam at Door A Misfeed at Tray 1 (MPT)

Troubleshooting for misfeeds from Tray 1 (MPT).

Jam at Door B Misfeed at Tray 2

Troubleshooting for misfeeds from Tray 2.

Jam at Door B Misfeed at Tray 2 (Continued)

Continues troubleshooting for misfeeds from Tray 2.

Jam at Door C for Tray [3][4][5][6]

Troubleshooting for jams in optional trays C3-C6.

Jam at Door C for Tray [3][4][5][6] (Continued)

Continues troubleshooting for jams in optional trays.

Jam at Door D Open Door D to Clear

Troubleshooting for jams at Door D.

Jam in Duplex Unit

Troubleshooting for jams within the Duplex Unit.

Jam at Door E

Troubleshooting for jams at Door E in the Exit Assembly.

Jam at Door E (Continued)

Continues troubleshooting for jams at Door E.

Jam Under Imaging Units

Troubleshooting for jams under the Imaging Units on the Transfer Unit belt.

Jam Under Imaging Units (Continued)

Continues troubleshooting for jams under Imaging Units.

Jam in Fuser

Troubleshooting for jams within the Fuser.

Jam in Fuser (Continued)

Continues troubleshooting for jams in the Fuser.

Jam at Duplex Entrance

Troubleshooting for jams at the Duplex entrance or Exit Assembly.

Jam at Duplex Entrance (Continued)

Continues troubleshooting for jams at the Duplex entrance.

Jam at Finisher Punch Unit

Troubleshooting for jams at the Finisher entrance.

Jam at Finisher Door H

Troubleshooting for jams in the Finisher Inverter.

Jam at Finisher Door H

Troubleshooting for multi-sheet jams in the Finisher.

Jam at Finisher Upper Output Tray

Troubleshooting for jams in the Finisher upper output path.

Jam at Finisher Saddle Stapler

Troubleshooting for jams in the Finisher staple path.

Jam at Finisher Upper Output Tray

Troubleshooting for jams in the Finisher eject path.

Jam Inside Finisher

Troubleshooting for jams within the Inverter path.

Jam at Finisher Entrance

Troubleshooting for jams at the printer/finisher interface.

Jam Inside Finisher

Troubleshooting for jams within the Inverter path.

Jam at Finisher Upper Output Tray

Troubleshooting for jams in the Finisher eject path.

Jam Inside Finisher

Troubleshooting for jams within the Inverter path.

Jam at Finisher Entrance

Troubleshooting for jams at the printer/finisher interface.

Finisher Output Tray Jammed

Troubleshooting for obstructions or failures in the Finisher Upper Output Tray.

Finisher Output Tray Jammed (Continued)

Continues troubleshooting for Finisher Upper Output Tray jams.

Door and Cover Errors

Troubleshooting procedures for various door and cover interlock errors.

Close Top Cover

Troubleshooting for an open Top Cover interlock switch.

Close Right Door A

Troubleshooting for an open Door A interlock switch.

Close Right Door B

Troubleshooting for an open Door B detected by the Tray 2 Feeder sensor.

Close Right Door C for Tray [3][4][5][6]

Troubleshooting for an open Door C sensor on option trays.

Close Left Door D

Troubleshooting for an open Door D sensor on the Duplex Unit.

Close Left Door E

Troubleshooting for an open Door E detect sensor in the Exit Assembly.

Close Finisher Door F

Troubleshooting for an open Door F interlock switch.

Close Finisher Door H

Troubleshooting for an open Upper Cover (Door H) sensor.

Close Finisher Door J

Troubleshooting for an open Front Cover (Door J) sensor.

Consumable/Routine Maintenance Procedures

Procedures for replacing consumables and performing routine maintenance.

Replace [C][M][Y][K] Toner Cartridge

Procedure for replacing toner cartridges due to various errors.

Replace [C][M][Y][K] Imaging Unit

Procedure when Imaging Unit life counter indicates end of life.

Replace Transfer Unit

Procedure when Transfer Unit end of life counter requires replacement.

Replace Waste Cartridge

Procedure when Waste Toner Reservoir end of life counter requires replacement.

Replace Fuser

Procedure when Fuser life counter indicates end of life.

Install, Reseat or Lock [C][M][Y][K] Toner Cartridge

Procedure when printer does not detect toner cartridge or supply.

Install or Reseat [C][M][Y][K] Imaging Unit

Procedure when Imaging Unit CRUM fails to detect the unit.

Install or Reseat Transfer Unit

Procedure when printer does not detect the Transfer Unit.

Install or Reseat Waste Cartridge

Procedure when Waste Toner Reservoir Detect Switch indicates missing reservoir.

Install or Reseat Fuser

Procedure when Fuser Release Sensor indicates Fuser is missing.

Metered Toner Is not Enabled

Occurs when a metered toner cartridge is in a non-metered printer.

Replace Metered [C][M][Y][K] Toner Cartridge

Procedure for metered operation with incorrect cartridge or error.

Tray and Media Errors

Troubleshooting procedures for tray and media related errors.

Clear Tray 1 (MPT) Riser Plate

Procedure when Tray 1 Level Sensor indicates Registration Motor failed to raise media.

Clear Tray 1 (MPT) Riser Plate (Continued)

Continues procedure for Tray 1 Level Sensor issues.

Clear Tray [2][3][4][5][6] Riser Plate

Procedure when Lift Motor failed to raise media to pre-feed position.

Out of Paper Load Tray 1(MPT) with [size] [type]

Procedure when Tray 1 No Paper Sensor indicates tray is empty.

Out of Paper Load Tray [2][3][4][5][6] with [size][type]

Procedure when No Paper Sensor indicates tray is empty for trays 2-6.

Manual Feed [size][type]

Addresses errors when manual feed media size/type does not match job specification.

Top Output Tray Is Full, Unload Paper

Troubleshooting when Full Stack Sensor indicates the output tray is full.

Left Side Output Tray Is Full, Unload Paper

Troubleshooting when Full Stack Sensor indicates the Side Output Tray is full.

Finisher Lower Output Tray is Full, Unload Paper

Troubleshooting when output tray is full.

Finisher Upper Output Tray is Full, Unload Paper

Troubleshooting when output tray is full.

Open Left Side Output Tray

Troubleshooting when Side Output Tray Detect Sensor indicates tray is closed.

Media Mismatch Errors

Troubleshooting procedures for media mismatch errors.

Wrong Paper Size; Load Tray 1 (MPT) with [size][type]

Procedure for Tray 1 MPT paper size mismatch.

Wrong Paper Size; Load Tray 2 with [size][type]

Procedure for Tray 2 paper size mismatch.

Wrong Paper Size; Load Tray [3][4][5][6] with [size][type]

Procedure for paper size mismatch in trays 3-6.

Wrong Paper Type Load Tray [1 (MPT)][2][3][4][5][6] with [size][type]

Procedure for media type mismatch detected by Media Thickness Sensor.

Paper Not Available Load Tray 1 (MPT) with [size] [type]

Procedure for Tray 1 MPT paper not available error.

Paper Not Available; Load Tray 2 with [size][type]

Procedure for Tray 2 paper not available error.

Paper Not Available Load Tray [3][4][5][6] with [size][type]

Procedure for paper not available error in trays 3-6.

Configuration Errors

Troubleshooting procedures for configuration-related errors.

Invalid or Missing Configuration Card

Troubleshooting when the printer's Configuration Card is missing or defective.

Duplicate IP Address Detected

Troubleshooting when another device uses the printer's IP address.

Fatal Error Procedures

Procedures for resolving fatal errors detected by the printer.

Fuser Failure

Procedure when Fuser temperature regulation fails.

Fuser Electrical Connections

Illustrates electrical connections for the Fuser Unit.

Temp Sensor Failure

Procedure when the Temperature Sensor fails.

RH Sensor Failure

Procedure for humidity sensor failure or condensation detection.

LED Over Temperature Failure

Troubleshooting for LED Head overheating.

Motor Overheating Failure

Troubleshooting when Imaging Unit motors overheat.

Engine Failure

Procedure when an Engine Control Board error is detected.

Power Supply Failure

Troubleshooting for LVPS overvoltage or undervoltage conditions.

Feeder Home Failure

Procedure when Tray 1 (MPT) does not reach home position.

Controller Fan Failure

Troubleshooting when the Image Processor Board Fan fails.

Power Supply Fan Failure

Troubleshooting when the LVPS Fan fails.

Top Cover Cooling Fan Failure

Troubleshooting when the Top Cover Fan fails.

Imaging Unit Fan Failure

Troubleshooting when an Imaging Unit Fan fails.

Transfer Unit Fan Failure

Troubleshooting when the Transfer Unit Fan fails.

Engine Cavity Fan Failure

Troubleshooting when the Card Cage Fan has stopped rotating.

Duplex Interface Failure

Troubleshooting communication errors with the Duplex Unit.

Tray [3][4][5][6] Interface Failure

Troubleshooting communication failures in the option tray interface.

Inverter Unit Interface Failure

Troubleshooting communication errors in the Finisher Inverter.

[C][M][Y][K] LED Failure

Troubleshooting for Yellow, Magenta, Cyan, or Black LED Head failures.

[C][M][Y][K] Imaging Unit Failure

Troubleshooting when the Drum Phase Sensor indicates the drum is out of position.

[C][M][Y][K] Imaging Unit Failure (Continued)

Continues troubleshooting for Imaging Unit drum or motor failures.

Flash Failure

Troubleshooting when the Flash Memory device on the Engine Control Board fails.

Fuser Fan Failure

Troubleshooting when the Fuser Fan rotation signal indicates failure.

Fuser 110v/220v Mismatch Failure

Procedure when an incorrect Fuser voltage is detected.

Unsupported Duplex Unit ROM

Troubleshooting when the installed Duplex Unit has incorrect firmware.

Unsupported Tray 2 ROM

Troubleshooting when Tray 2 firmware is unsupported.

Unsupported Tray [3][4][5][6] ROM

Troubleshooting for incompatible LTA or HCF assemblies.

Unsupported Inverter Unit ROM

Troubleshooting when an incompatible Inverter assembly is detected.

Unsupported Finisher Unit ROM

Troubleshooting when an incompatible Finisher is detected.

Hard Drive Failure

Troubleshooting when an error is detected in the Hard Drive.

Fuse Cut Error In Fuser

Procedure when the in-use fuse for the Fuser remains intact.

Fuse Cut Error In Transfer Unit

Procedure when the in-use fuse for the Transfer Unit remains intact.

Fuse Cut Error In [C][M][Y][K] Imaging Unit

Procedure when the in-use fuse for the Imaging Unit remains intact.

Controller to Engine Communications Failure

Troubleshooting when a communications error is detected.

Finisher Fold Position Sensor Failure

Troubleshooting when an error is detected with the Fold Position Sensor.

Finisher Paddle Failure

Troubleshooting when an error is detected in the Finisher Paddle Motor.

Finisher Stapler Swing Motor Failure

Troubleshooting when the Stapler Swing Home Position Sensor detects a motor error.

Finisher Stack Handling Motor Failure

Troubleshooting when the Delivery Belt Home Position Sensor detects a Stack Handling error.

Finisher Staple Motor Failure

Troubleshooting when an error is detected in the Staple Motor.

Finisher Jog Motor Failure

Troubleshooting when an error is detected in the Front or Rear Alignment Motor.

Finisher Lift Motor Failure

Troubleshooting when the Paper Surface, Upper Limit, or Lift Motor Clock Sensor detects a Lift Motor error.

Finisher Lift Motor Failure (Continued)

Continues troubleshooting for Lift Motor failures.

Finisher Exit Failure

Troubleshooting when the Delivery Belt Home Position Sensor detects a Delivery Motor error.

Finisher Punch Side Registration Sensor Failure

Troubleshooting when an error is detected in the Punch Side Registration Sensor.

Finisher Punch Registration Sensor Failure

Troubleshooting when an error is detected in the Horizontal Registration Home Position Sensor.

Finisher Punch Backup RAM Failure

Troubleshooting when an error is detected in the Punch Unit's backup RAM.

Finisher Punch Communications Failure

Troubleshooting when a communications error occurred with the Punch Unit.

Finisher Punch Unit Transfer Motor Failure

Troubleshooting when an error was detected in the Punch Transfer Motor.

Finisher Punch Motor Failure

Troubleshooting when an error was detected in the Punch Motor.

Finisher Backup RAM Failure

Troubleshooting when an error was detected in the Finisher’s backup RAM.

Finisher Punch Dust Sensor Failure

Troubleshooting when an error was detected in the Punch Waste Sensor.

Printer Error - Contact Service; report fault [n]

Procedures for codes associated with the Printer Error message.

Finisher Punch Unit Counter at End of Life

Procedure when Punch Count indicates end of life.

Finisher Staple Unit Counter at End of Life

Procedure when Stapler Self-Prime Sensor indicates no staples remain.

Finisher Interface Error

Troubleshooting serial communications errors with the Finisher.

Inverter Power Supply Failure

Troubleshooting when an inverter hardware error is detected.

Fuser Thermistor Errors

Lists and describes various Fuser thermistor error codes.

Job Offset Home Position Error

Troubleshooting when the Job Offset Home Position Sensor fails.

Control Panel Communications Failure

Troubleshooting communication errors with the Control Panel.

No Data to the [C][M][Y][K] LED Head

Troubleshooting errors related to LED Head data communication.

Motor Driver Board Communications Error

Troubleshooting Sub-CPU communications errors with installed options.

Tray [3][4][5][6] Firmware Error

Troubleshooting software errors in Tray 3-6 Flash Memory.

Duplex Unit Firmware Error

Troubleshooting firmware errors with the Duplex Unit.

Motor Driver Board Firmware Error

Troubleshooting software errors in the Motor Driver Board Flash Memory.

Finisher Inverter Firmware Error

Troubleshooting software errors with the Inverter's Flash Memory.

CRUM Reader Board Failure

Troubleshooting errors when the CRUM Reader Board does not respond or has communication issues.

Tray [3][4][5][6] Flash Memory Failure

Troubleshooting hardware errors in Tray 3-6 Flash Memory.

Duplex Unit Flash Memory Failure

Troubleshooting hardware failures with Duplex Unit Flash Memory.

Motor Driver Board Flash Memory Failure

Troubleshooting hardware failures with Motor Driver Board Flash Memory.

Finisher Inverter Flash Memory Failure

Troubleshooting hardware failures with Inverter Flash Memory.

Tray 2 Lift Motor Failure

Troubleshooting when the Tray 2 Lift Motor is not rotating.

Tray [3][4][5][6] Lift Motor Failure

Troubleshooting when lift motors for trays 3-6 fail.

Tray [3][4][5][6] Lift Motor Failure (Continued)

Continues troubleshooting for lift motor failures in trays 3-6.

Error in the Transfer Unit Belt

Troubleshooting when the Transfer Belt Rotation Sensor indicates an error.

Duplex Unit Fan Failure

Troubleshooting when the Duplex Fan has failed.

+24V Not Available to the Duplex Unit

Troubleshooting when +24V is not supplied to the Duplex Unit.

Failure in the [C][M][Y][K] Imaging Unit Drum or Motor

Troubleshooting when the Drum Phase Sensor indicates drum out of position.

[C][M][Y][K] Imaging Unit Drum or Motor (Continued)

Continues troubleshooting for Imaging Unit drum/motor failures.

+24 V Not Available to Tray [3][4][5][6]

Troubleshooting when +24V is not available to indicated option tray.

Failure in the Fuser Motor

Troubleshooting when the Fuser Motor has stopped rotating.

Failure in the Waste Toner Motor

Troubleshooting when the Waste Toner Motor has stopped rotating.

Motor Driver Board Clock Frequency Error

Troubleshooting inaccurate Sub-CPU clock frequency on Motor Driver Board.

Duplex Unit Clock Frequency Error

Troubleshooting inaccurate clock frequency for Duplex Unit Control Board CPU.

Finisher Inverter Clock Frequency Error

Troubleshooting inaccurate clock frequency for Inverter Control Board CPU.

Tray [3][4][5][6] Feeder Board Clock Frequency Error

Troubleshooting inaccurate clock frequency for indicated Feeder Board.

Waste Toner Transfer Error

Troubleshooting when Waste Toner Auger Rotation Sensor indicates stopped rotation.

Waste Toner Transfer Error (Continued)

Continues troubleshooting for Waste Toner Auger errors.

[CM][YK] Toner Supply Failure

Troubleshooting when Low Toner Sensor indicates supply failure.

Warning Messages

Lists warning messages and their corresponding page references.

No Paper in Tray 1 (MPT)

Procedure when Tray 1 No Paper Sensor indicates the tray is empty.

No Paper in Tray [2][3][4][5][6]

Procedure when No Paper Sensor indicates the named tray is empty for trays 2-6.

Left Side Output Tray is Closed

Warning when Side Output Tray Detect Sensor indicates the tray is closed.

Waste Cartridge is Almost Full

Troubleshooting when Waste Toner Reservoir Full Sensor indicates the reservoir is full.

Non-Xerox [C][M][Y][K] Toner Cartridge

Warning message when non-Xerox toner is detected.

Staple Cartridge Is Empty

When Stapler Self-Prime Sensor indicates no staples remain.

Punch Waste Box is Full or Missing

Troubleshooting when Punch Box Sensor indicates the box is full or not installed.

Finisher Away From Base

Troubleshooting when Finisher Switch indicates detachment from Inverter.

Finisher Away From Printer

Troubleshooting when Inverter Docking Switch indicates detachment from printer.

Section 4 - General Troubleshooting

Power On Self Test (POST)

Isolates defective subsystems using soft and hard faults.

Service Diagnostics

Provides tests for electro-mechanical components and NVRAM access.

Control Panel Troubleshooting

Addresses issues with the control panel display and buttons.

No Control Panel Display after Power Is Turned On

Troubleshooting steps when the control panel has no display.

Control Panel LED Is On, Control Panel Display Is Blank

Troubleshooting steps when the control panel display is blank.

Inoperable Printer Troubleshooting

Steps for when the printer does not operate after power switch activation.

Engine Power-Up Sequence (BIST)

Lists firmware checks performed at each printer power-up.

Printer Continually Displays Warming Up...

Addresses issues with Image Processor Board NVRAM content loading.

Printer Displays Install or Reseat Imaging Unit

Refers to procedure on page 3-65.

Printer Displays Reseat Contoller Board

Troubleshooting steps for reseating the controller board.

Printer Does Not Come to a Ready State

Refers to AC power and fault isolation troubleshooting.

Paper Size Switch Assembly

Explains how the assembly actuates the Paper Size Switch for error detection.

Paper Size Switch Assembly (Continued)

Continues explanation of Paper Size Switch testing and signals.

Power Supply

Discusses LVPS overcurrent, overvoltage, and interlock switch issues.

LVPS Overcurrent Protection Circuit

Circuit stops outputs if DC power supply detects a short circuit.

LVPS Overvoltage Protection Circuit

Circuit stops outputs if DC power supply exceeds specified voltage.

+24 VDC Output Stopped By Interlock Switch

Explains how interlock switches shut off +24 VDC supply.

AC Power Supply Troubleshooting

Procedures for troubleshooting AC power supply issues.

DC Power Supply Troubleshooting

Procedures for troubleshooting DC power supply issues.

RAM Memory Fault Isolation

Addresses RAM failures or installation issues.

RAM Memory Fault Isolation (Continued)

Continues troubleshooting steps for RAM memory issues.

Media Jams and the Paper Path

Explains troubleshooting for media jams and paper path issues.

Media-Based Problems

Checks media type, condition, and path for issues.

Multiple-Sheet Pick

Troubleshooting steps for picking multiple sheets of paper.

Mis-Pick

Troubleshooting steps for incorrect paper picking.

Media Jams and the Paper Path (Continued)

Continues troubleshooting for media jams and paper path issues.

Skewed Image

Addresses images not parallel with page edges, causing jams.

Damaged Prints

Troubleshooting for wrinkled, creased, or torn printed pages.

Fuser Jams

Troubleshooting steps for jams occurring in the Fuser area.

Exit Jams

Troubleshooting for jams in the Fuser and Exit Assembly.

Operating System and Application Problems

Addresses printing issues related to OS and applications.

Macintosh Printing Problems

Specific steps for diagnosing Macintosh printing issues.

Windows Printing Problems

Specific steps for diagnosing Windows printing issues.

Image never prints

Troubleshooting steps when no image prints.

Network Problems

Provides diagnostic tools to resolve networking issues.

Initial Actions

Basic steps to take before troubleshooting network issues.

Network Diagnostics

Runs TCP/IP connection tests and displays results.

Network Problems (Continued)

Continues troubleshooting network issues.

Windows Ethernet Port Verification

Steps to verify printer's Ethernet port functionality on Windows.

Mac OS X Ethernet Port Verification

Steps to verify printer's Ethernet port functionality on Mac OS X.

USB Port Testing

Tests the printer's USB Port directly using a USB cable.

Section 5 - Print-Quality Troubleshooting

Print-Quality Problems Overview

Attributes defects to components, consumables, media, or software.

Defects Associated with Specific Printer Components

Lists common print-quality problems by component.

Imaging Unit

Lists common defects like streaks, banding, voids, and mis-registration.

Transfer Unit

Lists common defects like toner on back, light prints, and mis-registration.

Fuser

Lists common defects like offsetting and dark streaks.

LED Head

Lists common defects like streaks and uneven density.

Test Prints

Explains how to select and analyze test prints for troubleshooting.

Analyzing the 100% Solid Fill Pages

Guides analysis of CMYK, Blue, and Green solid fill pages for defects.

Analyzing the Color Test Pages

Guides analysis of CMYK, color, and PS pattern pages for defects.

Analyzing the PS Pattern

Guides analysis of PS pattern for color registration and density.

Analyzing the Color Step Pages

Guides analysis of CMYK graduated fills for defects.

Light Prints in All Colors

Troubleshooting for overall light image density in all colors.

Light Prints in All Colors (Continued)

Continues troubleshooting for light prints in all colors.

Light Print in Only One Color

Troubleshooting for light images in a single color (Y, M, C, or K).

Light Print in Only One Color (Continued)

Continues troubleshooting for light prints in a single color.

Blank Prints

Troubleshooting steps when the entire test print is blank.

Mottled or Splotchy Prints

Troubleshooting for mottled print appearance, often due to humidity.

Mottled or Splotchy Prints (Continued)

Continues troubleshooting for mottled print appearance.

Unexpected Colors

Troubleshooting when colors are different from expected.

Repeating Bands, Lines, Marks, or Spots

Troubleshooting for repeating defects, often caused by damaged rollers.

Random Bands, Lines, Marks, or Missing Spots

Troubleshooting for light areas or missing spots not repeating or single color.

Random Bands, Lines, Marks, or Missing Spots (Continued)

Continues troubleshooting for random image defects.

Random Spots

Troubleshooting for toner spots scattered across the page.

Random Spots (Continued)

Continues troubleshooting for random toner spots.

Background Contamination

Troubleshooting for light toner covering across the page.

Background Contamination (Continued)

Continues troubleshooting for background toner contamination.

Residual Image, Ghosting or Hot Offset

Troubleshooting faint, ghostly images on the page.

Incomplete Fusing or Cold Offset

Troubleshooting when Fuser temperature is too low for media, causing improper fusing.

Mis-Registration, Color Layers Not Correctly Registered

Troubleshooting blurred images where primary colors don't align correctly.

Process Direction Bands, Voids, or Streaks

Troubleshooting dark lines parallel to paper travel, due to toner debris.

Scan Direction Bands, Voids, or Streaks

Troubleshooting light or missing areas forming bands along the page.

Scan Direction Dark Streaks

Troubleshooting dark lines parallel to the print's leading edge.

Process Direction Bands, Voids, or Streaks

Troubleshooting dark lines parallel to paper travel, due to toner debris.

Section 6 - Adjustments and Calibrations

Calibrations

Procedures to adjust printer for optimal color output and settings.

Color Calibration

Adjusts printer for optimal color output; settings may need adjustment.

Margin Calibration

Allows adjustment of printer's imaging area relative to paper edges.

Automatic Density Control (ADC) Calibration

Ensures predictable and repeatable color image quality.

Entering the New Tag Number

Inputting color chip reference value to adjust ADC sensor.

Calibration

Executes density calibration and reports pass/fail status.

Automatic Thickness (ATS) Calibration

Measures media thickness to adjust Fuser temp and print speed.

ATS 4-Sheet Calibration

Verifies ATS operation using premeasured media.

Edit Thickness Data

Enters premeasured media thickness in mils or microns.

Adjustments

Covers vertical and horizontal color registration adjustments.

Vertical and Horizontal Color Registration

Discusses automatic and manual adjustment options for color registration.

Vertical Color Registration

Vertical adjustment is automatic; no manual process available.

Horizontal Color Registration

Automatic and manual options for horizontal color registration.

Resetting NVRAM

Restores printer configuration settings to factory defaults.

Restore Factory Color Settings

Resets density and color balance settings to factory defaults.

Restore Previous Color Settings

Restores color settings from before the last balance adjustments.

Restore Factory Margins Settings

Resets margin settings to the factory-default values.

Resetting Connection Setup Defaults

Resets connection values to factory defaults.

Resetting PostScript Setup Defaults

Resets PostScript setup values to their default values.

Resetting PCL Setup Values to Default

Resets PCL setup values to their default values.

Resetting Control Panel Setup Values to Default

Resets control panel language, brightness, and accessibility settings.

Resetting Printer Controls Values to Default

Resets startup page, power saver, date/time, and other printer controls.

Resetting All Printer Defaults (PostScript NVRAM)

Restores Image Processor Board NVRAM parameters to factory defaults.

Service Diagnostics NVRAM Utilities

Provides utilities for NVRAM access and resetting.

Postscript NVRAM Reset

Restores NVRAM values to factory defaults.

CRU Counter Read

Displays current life count of consumables.

CRU Counter Reset

Sets life counts of consumables to Zero.

Section 7 - Cleaning and Maintenance

Service Maintenance Procedures

Procedures for checking, servicing, or repairing the printer.

Recommended Tools

Lists tools required for cleaning and maintenance.

Cleaning

Provides general cleaning steps based on printer operating environment.

Cleaning the Imaging Unit Contacts

Procedure to clean the four contacts at the front of the Imaging Unit.

Cleaning the Feed Rollers

Cleans accumulated dust from the Feed Rollers.

Section 8 - Service Parts Disassembly

Overview

Contains removal/replacement procedures for selected parts (FRUs).

General Notes on Disassembly

Provides preparation, cautions, and notations for disassembly procedures.

Maintenance Items and Consumables

Lists maintenance items like Transfer Unit and Fuser, and consumables.

Imaging Unit Removal

Procedure for removing the Imaging Unit, which includes toner cartridges.

Toner Cartridge Removal

Procedure for removing toner cartridges, facilitating other component removal.

Transfer Unit Removal

Procedure for removing the Transfer Unit.

Fuser Removal

Procedure for removing the Fuser assembly.

Covers

Disassembly procedures for various printer covers.

Rear Cover

Procedure to remove the rear cover.

Lower Rear Cover

Procedure to remove the lower rear cover.

Right Rear Cover

Procedure to remove the right rear cover.

Right Side Cover

Procedure to remove the right side cover, may require lifting print engine.

Left Side Cover

Procedure to remove the left side cover.

Front Door

Procedure to remove the front door.

Door B

Procedure to remove Door B.

Left Rear Cover

Procedure to remove the left rear cover.

Left Front Cover

Procedure to remove the left front cover.

Upper Front Cover

Procedure to remove the upper front cover.

Top Cover

Procedure to remove the top cover.

Trays

Procedures for removing printer trays and related components.

Tray 1 (MPT)

Procedure to remove Tray 1 (MPT) and its associated components.

Tray 1 (MPT) Level Sensor

Procedure to remove the level sensor from the feed roller assembly.

Tray 1 (MPT) Home Position Sensor

Procedure to remove the home position sensor from the registration assembly.

OHP Sensor

Procedure to remove the OHP sensor from Tray 1 (MPT).

Feed-Out Sensor #1

Procedure to remove the feed-out sensor from Tray 1 (MPT).

Tray 1 (MPT) No Paper Sensor

Procedure to remove the no paper sensor from Tray 1 (MPT).

Tray 1 (MPT) Feed Rollers

Procedure to remove the feed rollers from Tray 1 (MPT).

Tray 2 Feeder

Procedure to remove the Tray 2 Feeder assembly.

Registration Motor

Procedure to remove the Registration Motor from the Feeder.

Feed Motor

Procedure to remove the Feed Motor from the Feeder.

Lift Motor

Procedure to remove the Lift Motor from the frame.

Registration Clutch #2

Procedure to remove the Registration Clutch #2.

Door B Detect Sensor

Procedure to remove the Door B Detect Sensor.

Tray 2 No Paper Sensor

Procedure to remove the No Paper Sensor housing.

Registration Sensor #2

Procedure to remove the Registration Sensor #2.

Feed-Out Sensor #2

Procedure to remove the Feed-Out Sensor #2.

Feeder Board

Procedure to remove the Feeder Board.

Tray 2 Feed Rollers

Procedure to remove feed rollers from Tray 2.

Side Output Tray

Procedure to remove the Side Output Tray.

Chassis

Procedures for disassembling chassis components.

Job Offset Assembly

Procedure to remove the Job Offset Assembly.

Job Offset Motor

Procedure to remove the Job Offset Motor.

Job Offset Home Position Sensor

Procedure to remove the Job Offset Home Position Sensor.

Top Output Chute

Procedure to remove the Top Output Chute.

Door A Latch Assembly

Procedure to remove the Door A Latch Assembly.

Media Thickness Sensor

Procedure to remove the Media Thickness Sensor.

Temperature/Humidity Sensor

Procedure to remove the Temperature/Humidity Sensor.

Exit Assembly

Procedure to remove the Exit Assembly.

Exit Gate Solenoid

Procedure to remove the Exit Gate Solenoid.

Fuser Exit Sensor and Actuator

Procedure to remove the Fuser Exit Sensor and Actuator.

Top Output Tray Stack Full Sensor

Procedure to remove the Top Output Tray Stack Full Sensor.

Side Output Tray Detect Sensor

Procedure to remove the Side Output Tray Detect Sensor.

Side Output Tray Stack Full Sensor

Procedure to remove the Side Output Tray Stack Full Sensor.

Door E Detect Sensor

Procedure to remove the Door E Detect Sensor.

Fuser Release Sensor

Procedure to remove the Fuser Release Sensor.

Registration Sensor Assembly

Procedure to remove the Registration Sensor Assembly.

Registration Shutter Solenoid

Procedure to remove the Registration Shutter Solenoid.

ADC Sensor

Procedure to remove the ADC Sensor.

Media Slack Sensor and Actuator

Procedure to remove the Media Slack Sensor and Actuator.

Registration Assembly

Procedure to remove the Registration Assembly.

Registration Clutch #1

Procedure to remove the Registration Clutch #1.

Waste Toner Auger Assembly

Procedure to remove the Waste Toner Auger Assembly.

Waste Toner Reservoir Full Sensor

Procedure to remove the Waste Toner Reservoir Full Sensor.

Waste Toner Reservoir Auger Rotation Sensor

Procedure to remove the Waste Toner Reservoir Auger Rotation Sensor.

Waste Toner Auger Rotation Sensor

Procedure to remove the Waste Toner Auger Rotation Sensor.

Transfer Unit Belt Rotation Sensor

Procedure to remove the Transfer Unit Belt Rotation Sensor.

Lower Basket Assembly

Procedure to remove the Lower Basket Assembly.

Basket Assembly

Procedure to remove the Basket Assembly.

LED Assembly

Procedure to remove the LED Assembly.

Drive

Procedures for removing drive components.

Transfer Unit Motor

Procedure to remove the Transfer Unit Motor.

Toner Motors

Procedure to remove the Toner Motors.

Imaging Unit Motors

Procedure to remove the Imaging Unit Motors.

Fuser Motor

Procedure to remove the Fuser Motor.

Waste Toner Motor

Procedure to remove the Waste Toner Motor.

Imaging Unit Lift Uplink

Procedure to remove the Imaging Unit Lift Uplink.

Front Lift Uplink

Procedure to remove the Front Lift Uplink.

Electrical

Procedures for disassembling electrical components.

Control Panel

Procedure to remove the Control Panel assembly.

Engine Control Board

Procedure to remove the Engine Control Board.

Image Processor Board

Procedure to remove the Image Processor Board.

Card Cage Fan Duct

Procedure to remove the Card Cage Fan Duct.

Card Cage Fan

Procedure to remove the Card Cage Fan.

Card Cage

Procedure to remove the Card Cage.

HVPS Cover

Procedure to remove the HVPS Cover.

High Voltage Power Supply

Procedure to remove the High Voltage Power Supply.

Housing Bias Assembly

Procedure to remove the Housing Bias Assembly.

Low Voltage Power Supply

Procedure to remove the LVPS enclosure.

LVPS Fan

Procedure to remove the LVPS Fan.

LED Head

Procedure to remove the LED Head.

LED Relay Board

Procedure to remove the LED Relay Board.

Top Cover Interlock Switch

Procedure to remove the Top Cover Interlock Switch.

Waste Toner Reservoir Detect Switch

Procedure to remove the Waste Toner Reservoir Detect Switch.

Door A Interlock Switch

Procedure to remove the Door A Interlock Switch.

Imaging Unit Fan

Procedure to remove the Imaging Unit Fan.

Transfer Unit Fan

Procedure to remove the Transfer Unit Fan.

Top Cover Fan

Procedure to remove the Top Cover Fan.

IP Fan

Procedure to remove the IP Fan.

Paper Size Switch

Procedure to remove the Paper Size Switch.

Motor Driver Board

Procedure to remove the Motor Driver Board.

Imaging Unit Sensor Board

Procedure to remove the Imaging Unit Sensor Board.

Toner Supply Camshaft

Procedure to remove the Toner Supply Camshafts.

Imaging Unit Motor Mounting Plate

Procedure to remove the Imaging Unit Motor Mounting Plate.

CRUM Reader Board

Procedure to remove the CRUM Reader Board.

CRUM Antenna

Procedure to remove the CRUM Antenna.

Registration Sensor Board

Procedure to remove the Registration Sensor Board.

Fuser Fan

Procedure to remove the Fuser Fan.

Front Sensor Board

Procedure to remove the Front Sensor Board.

Rear Sensor Board

Procedure to remove the Rear Sensor Board.

Section 9 - Parts List

Serial Number Format

Explains the coding format of the printer's serial number.

Using the Parts List

Provides guidance on how to use the parts list for ordering.

Print Engine Parts

Exploded view and list of parts for the main print engine assembly.

Xerox Supplies and Accessories

Lists toner cartridges, maintenance items, and upgrade kits.

Service Kits

Lists kits developed for obtaining spare parts.

Feed Roller Kit

Provides replacement rollers for the Feeder Assemblies.

Sensor Kit

Provides replacement sensor actuators.

Actuator Kit

Provides replacement sensor actuators.

Screw Kit

Lists various types of screws used in printer assembly.

Hardware Kit

Lists hardware components like springs, pins, and rings.

Gear Kit

Lists various gears used in the printer's drive mechanisms.

Harness Kit

Lists various wire and connector harnesses.

Section 10 - Wiring Diagrams

Plug/Jack Designators

Shows primary connections within the printer and optional feeders.

Print Engine Plug/Jack Designators

Lists connections for the print engine, including coordinates and remarks.

Print Engine Plug/Jack Designators (Continued)

Continues listing print engine connections and remarks.

Print Engine Wiring Diagrams

Illustrates wiring for the print engine and its components.

Print Engine General Wiring (1/7)

Shows general wiring for the print engine, part 1 of 7.

Print Engine General Wiring (2/7)

Shows general wiring for the print engine, part 2 of 7.

Print Engine General Wiring (3/7)

Shows general wiring for the print engine, part 3 of 7.

Print Engine General Wiring (4/7)

Shows general wiring for the print engine, part 4 of 7.

Print Engine General Wiring (5/7)

Shows general wiring for the print engine, part 5 of 7.

Print Engine General Wiring (6/7)

Shows general wiring for the print engine, part 6 of 7.

Print Engine General Wiring (7/7)

Shows general wiring for the print engine, part 7 of 7.

Front Sensor Board (1/2)

Wiring diagram for the front sensor board, part 1 of 2.

Front Sensor Board (2/2)

Wiring diagram for the front sensor board, part 2 of 2.

Feeder Board

Wiring diagram for the feeder board.

Motor Driver Board (1/6)

Wiring diagram for the motor driver board, part 1 of 6.

Motor Driver Board (2/6)

Wiring diagram for the motor driver board, part 2 of 6.

Motor Driver Board (3/6)

Wiring diagram for the motor driver board, part 3 of 6.

Motor Driver Board (4/6)

Wiring diagram for the motor driver board, part 4 of 6.

Motor Driver Board (5/6)

Wiring diagram for the motor driver board, part 5 of 6.

Motor Driver Board (6/6)

Wiring diagram for the motor driver board, part 6 of 6.

LED Heads

Wiring diagrams for the LED Heads and their connections.

Xerographics

Wiring diagrams for the xerographic components.

HVPS

Wiring diagram for the High Voltage Power Supply.

LVPS

Wiring diagram for the Low Voltage Power Supply.

Fuser

Wiring diagram for the Fuser assembly.

Imaging Unit Sensor Board

Wiring diagram for the Imaging Unit Sensor Board.

Image Processor Board

Wiring diagram for the Image Processor Board.

Control Panel

Wiring diagram for the Control Panel.

Section A - Reference

Phaser 7400 Menu Map

Provides a visual representation of the printer's menu structure.

Printer Status Codes

Defines status codes found in Service Usage Profile and Fault History.

Service Diagnostics Menu Map (1/2)

Maps the menu structure for Service Diagnostics, part 1 of 2.

Service Diagnostics Menu Map (2/2)

Maps the menu structure for Service Diagnostics, part 2 of 2.

Service Diagnostics Tests

Lists tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Service Diagnostics Tests and Utilities (Continued)

Continues listing tests and their functional definitions.

Mode Select Port

A 6-pin port for placing the printer in operational or service modes.

Obtaining Serial Back Channel Traces

Steps to obtain a back channel trace for troubleshooting printer behavior.

Preparing the Printer for Shipment

Instructions for preparing and packaging the printer for shipment.

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