Xerox 5400N - Phaser B/W Laser Printer User manual

Service Quick Reference Guide
PHASER™ 5400
LASER PRINTER

Warning
The following servicing instructions are for
use by qualified service personnel only. To
avoid personal injury, do not perform any
servicing other than that contained in
operating instructions unless you are qualified
to do so.
This printing: August 2002
Rev. 1
721P58301
Phaser™5400
Laser Printer
Service Quick Reference Guide

Phaser 5400 Laser Printer Service Guide iii
Users Safety Summary
Terms in manual: Various terms are used throughout this manual to either provide
additional information on a specific topic or to warn of possible danger that might be
present during a procedure or action. Be aware of all symbols and terms when they are
used, and always read Note, Caution and Warning messages.
Terms on Product:
Power Source: For 110 VAC printers, do not apply more than 130 VAC RMS between
the supply conductors or between either supply conductor and ground. Use only the
specified power cord and connector. For 220 VAC printers, do not apply more than 250
VAC RMS between the supply conductors or between either supply conductor and
ground. Use only the specified power cord and connector. Refer to a qualified service
technician for changes to the cord or connector.
Warning: If the product loses the ground connection, usage of knobs
and controls (and other conductive parts) can cause an
electrical shock.
Note:A Note may indicate an operating or maintenance procedure,
practice or condition that is necessary to efficiently accomplish a
task.
A Note may also provide additional information related to a
specific subject or add a comment on the results achieved through
a previous action.
Caution:A Caution indicates an operating or maintenance procedure,
practice or condition that, if not strictly observed, could result in
damage to, or destruction of, equipment.
Warning:A Warning indicates an operating, or maintenance procedure,
practice or condition that, if not strictly observed, could result in
injury or loss of life.
Caution: A personal injury hazard exists that may not be apparent. For
example, a panel may cover the hazardous area.
Danger: A personal injury hazard exists in the area where you see the sign.

iv Phaser 5400 Laser Printer Service Guide
Power Supply and Electrical Components: Before starting any service procedure,
switch off the printer power and unplug the power cord from the wall outlet. If you must
service the printer with power applied, be aware of the potential for electrical shock.
Do not touch any electrical component unless you are instructed to do so by a service
procedure.
Mechanical Components: Manually rotate drive assemblies to inspect sprockets and
gears.
Do not try to manually rotate or manually stop the drive assemblies while any printer motor
is running.
Laser Components
Warning: This printer generates a laser beam as part of the printing
process. The laser beam is a concentrated narrow beam of
infrared light. The laser beam in this machine is invisible.
Although you cannot see the beam, it can still cause severe
eye damage. Direct eye exposure to the laser beam may
cause eye injury or blindness.
To avoid permanent eye damage, follow these directions:
■Before starting any service procedure, switch off the printer power and unplug
the power cord from the AC wall outlet.
■Do not disassemble the Raster Output Scanner Assembly (laser scanner) or any
laser component that displays a Laser Warning Sticker.
■Use caution when you are working around the Raster Output Scanner Assembly
or when you are performing laser related troubleshooting or repair procedures.
■Never place a mirror or a reflective tool or object in the laser beam path.
■Do not disassemble the printer in such a way that the laser beam can exit the
print engine during a print cycle.
S5400-01
S5400-02

Phaser 5400 Laser Printer Service Guide v
Fuser Components
Warning: This printer uses heat and pressure to fuse the toner image
to a sheet of paper. The Fuser Assembly is very hot. Switch
off printer power and wait at least 30 minutes for the Fuser
to cool before you attempt to service the Fuser Assembly or
adjacent components.
Safety Components: Make sure covers and panels are in place and that all interlock
switches are all functioning correctly after you have completed a printer service call. If
you bypass, or cheat, an interlock switch during a service call, use extreme caution when
working on or around the printer.
Warning Labels: Throughout the printer, warning labels are displayed on potentially
dangerous components. When you service the printer, check to make certain that all
warning labels are in place.
Most importantly, read and obey all posted warning labels.
Warning: Turning the power off using the On/Off switch does not
de-energize the printer. You must remove the power cord to
disconnect the printer from the main power source. Keep the
power cord accessible for removal in case of an emergency.
Safety Instructions: Read all installation instructions carefully before you plug the
product into a power source.
Care of Product: Disconnect the power plug by pulling the plug, not the cord.
Disconnect the power plug:
■If the power cord or plug is frayed or otherwise damaged,
■If any liquid or foreign material is spilled into the case,
■If the printer is exposed to any excess moisture,
■If the printer is dropped or damaged,
■If you suspect that the product needs servicing or repair, or
■Whenever you clean the product.
Ground the product: Plug the three-wire power cord (with grounding prong) into
grounded AC outlets only. If necessary, contact a licensed electrician to install a properly
grounded outlet.

vi Phaser 5400 Laser Printer Service Guide
Service Safety Summary
For qualified service personnel only: Refer also to the preceding Users Safety
Summary.
Do not service alone: Do not perform internal service or adjustment of this product
unless another person capable of rendering first aid or resuscitation is present.
Use care when servicing with power: Dangerous voltages may exist at several points in
this product. To avoid personal injury, do not touch exposed connections and components
while power is on.
Disconnect power before removing the power supply shield, soldering or replacing
components.
Do not wear jewelry: Remove jewelry prior to servicing. Rings, necklaces and other
metallic objects could come into contact with dangerous voltages and currents.
Power source: This product is intended to operate from a power source that will not apply
more then 250 VAC rms between the supply conductors or between either supply
conductor and ground. A protective ground connection by way of the grounding
conductor in the power cord is essential for safe operation.
This product is certified under IEC 825 as a Class 1 Laser Product.
CLASS 1 LASER PRODUCT
The Phaser 5400 Laser Printer is certified to comply with Laser Product Performance
Standards set by the U.S. Department of Health and Human Services as a Class 1 Laser
Product. This means that this is a class of laser product that does not emit hazardous laser
radiation; this is possible only because the laser beam is totally enclosed during all modes
of customer operation.
The laser and output of the laser scanner unit produces a beam that, if looked into, could
cause eye damage. Service procedures must be followed exactly as written without
change.
When servicing the machine or laser module, follow the procedures specified in the
manual and there will be no hazards from the laser.
Laser (FDA): Any laser label visible to service must be reproduced in the service manual
with location shown or indicated. Safe working procedures and clear warnings concerning
precautions to avoid possible exposure must also be included.

Phaser 5400 Laser Printer Service Guide vii
The Laser contained in the Phaser 5400 Laser Printer meets the following standard: Laser
class 3B, maximum 5 mW, wavelength 780 nm.
The following LASER symbol will be displayed at the start of any procedure where
possible exposure to the laser beam exists.
LUOKAN 1 LASERLAITE
KLASS 1 LASER APPARAT

viii Phaser 5400 Laser Printer Service Guide
Federal Communications Commission Compliance
This equipment has been tested and found to comply with the limits set for a Class A
digital device, as stated in Part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference in a commercial installation. This
equipment generates, uses, and may radiate radio frequency energy. If not installed and
used in accordance with the instructions provided, this equipment may cause disruptive
interference to nearby radio and television communications. Even if the equipment is
installed according to the instructions, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause disruptive interference to
nearby radio and television reception, switch the equipment off to determine if it is the
true cause of the interference. If the equipment is the cause of the interference, the user
should try to minimize the interference by taking one or more of the following courses of
action:
■Either re–orient or relocate the radio/television receiving antenna.
■Increase the separation between the equipment and the radio/television receiver.
■Connect the equipment to an AC outlet that is not on the same circuit as the
radio/television receiver.
■If the previous solutions fail to bring results, you should consult either your equipment
dealer or an experienced radio/television technician.
For more information on interference, refer to the Federal Communications Commission’s
booklet “How to Identify and Resolve Radio-TV Interference Problems”. This booklet is
available from the U.S. Government Printing Office, Washington D.C. 20402, Stock No.
004-000-00345-4.

Phaser 5400 Laser Printer Service Guide ix
Canadian Notice
This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus as described in the radio interference regulations of the Canadian
Department of Communications.
Avis Canadien
Cet appareil numerique est conforme aux limites émission de bruits radioélectriques pour
les appareils de classe A stipulés das le réglement sur le brouillage radioéletrique du
Ministére des Communcations du Canada.
European Notice
This equipment was tested and is determined to be compliant with VDE requirements for a
Class A device.
Hinweis
Hiermit wird bescheinigt, dass der Babe Laserdrucker, in bereinstimmung mit den
Betimmunngen der Vfg 104ß 984 funkenstört ist. Der Deutschen Bundespost wurde das
Inverkehrbringen dieses Gertëes angqeigt und die Berechtigung zur berprufung der Serie
auf Einhaltung der Bestimmungen eingeräumt.

x Phaser 5400 Laser Printer Service Guide
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Phaser 5400 Laser Printer Service Guide xi
Table of Contents
Copyright .................................................................................................. ii
Users Safety Summary ........................................................................... iii
Service Safety Summary......................................................................... vi
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
List of Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxv
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Parts of the Printer ...................................................................................4
Printer Components...........................................................................4
Printer Options...................................................................................5
Control Panel .....................................................................................6
Display Screen...................................................................................7
Rear Panel .........................................................................................8
Print Engine Assemblies ..........................................................................9
Paper Path Information ..........................................................................15
Printer Specifications..............................................................................17
RAM and Printer Capabilities...........................................................17
Basic Specifications .........................................................................18
Electrical Specifications ...................................................................18
Mechanical Specifications ...............................................................19
Environmental Specifications...........................................................20
Life Expectancies.............................................................................21
Conforming Regulations and Standards..........................................21
Printing Speed .................................................................................22
Printing Media Feeding Means ........................................................23
Printing Media..................................................................................24
Printing Accuracy.............................................................................25
Components to Be Replaced Periodically .......................................26
Options ............................................................................................26

xii Phaser 5400 Laser Printer Service Guide
Error Codes and Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Introduction ............................................................................................28
Error messages ...............................................................................28
Measurements .................................................................................29
Service Flowchart ............................................................................29
Repair Analysis Procedure Table...........................................................31
How to Use a Repair Analysis Procedure Table..............................31
How to Follow a Repair Analysis Procedure....................................32
General Notes on Using Repair Analysis Procedures .....................33
Error Codes with Repair Analysis Procedure.........................................35
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Printer Performance Problems Repair Analysis Procedure
(RAP) Table.............................................................................107
Image-Quality Problems Repair Analysis Procedure (RAP) Table ......109
Electrical Interference Repair Analysis Procedure (RAP) Table ..........109
Printer Performance Problems .............................................................110
Image-Quality Troubleshooting ............................................................176
Introduction ....................................................................................176
Image-Quality Defect Definitions ...................................................177
Diagnostics, Test Prints, Service Tests and
NVRAM Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .219
Entering Diagnostics Mode ..................................................................221
System Controller Board Error (Blink) Codes.......................................222
Recommended Corrective Action ..................................................223
Power On LED Sequence..............................................................223
Diagnostics Menu Map ..................................................................224
System Controller Board Test Prints ....................................................226
Main Menu Test Prints .........................................................................226
Configuration Sheet .......................................................................226
System Controller Board Test Print ...............................................227
Fault History...................................................................................227
Display Faults ................................................................................227
Menu Map......................................................................................227
PS Font List ...................................................................................228
PCL Font List: ................................................................................228
PCL Demo: ....................................................................................228
Print Engine Controller Board Test Print ..............................................229
Analyzing Test Prints ...........................................................................230
Registration ..........................................................................................231
NVRAM Configuration (NVM Config) ...................................................233

Phaser 5400 Laser Printer Service Guide xiii
Component Tests.................................................................................235
Reset Menu ..........................................................................................239
Maintenance Kit Counter Reset Procedure..........................................240
Maintenance and Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Scheduled Maintenance.......................................................................241
Recommended Tools ...........................................................................241
Inspect While Servicing ........................................................................241
General Cleaning (if needed) ...............................................................242
FRU Removal / Replacement Procedures (RRPs) . . . . . . . . . . . 245
Contents - Removal and Replacement Procedures .............................245
Introduction...........................................................................................248
Work Notes...........................................................................................248
Preparation...........................................................................................249
Notations in the RRP text .....................................................................249
Adjustment ...........................................................................................249
Repair Procedures ...............................................................................250
RRP 1.1 Left Side Cover ...............................................................250
RRP 1.2 Right Side Cover .............................................................251
RRP 1.3 Top Cover Assembly.......................................................252
RRP 1.4 Front Cover .....................................................................253
RRP 1.5 Lower Left Cover .............................................................254
RRP 1.6 HVPS Cover ....................................................................255
RRP 1.7 Lower Rear Cover ...........................................................256
RRP 1.8 MBF Gear Cover .............................................................257
RRP 1.9 Rear Cover......................................................................258
RRP 2.1 Multi-sheet Bypass Feeder (MBF) Assembly..................259
RRP 2.2 MBF Feed Rollers ...........................................................261
RRP 2.3 MBF Tray 1 Turn Roller Clutch Assembly.......................262
RRP 2.4 Tray 1 Turn Roller Assembly...........................................263
RRP 2.5 MBF Retard Holder Assembly.........................................264
RRP 2.6 Tray 1 No Paper Sensor Assembly.................................266
RRP 2.7 MBF No Paper Sensor Assembly ...................................267
RRP 2.8 MBF Feed Solenoid ........................................................269
RRP 2.9 Tray 1 Feed Solenoid......................................................270
RRP 2.10 Tray 1 Feed Roller ........................................................271
RRP 2.11 Tray 1 Retard Holder Assembly ....................................272
RRP 3.1 Retard Chute Assembly ..................................................273
RRP 3.2 Rear Chute Assembly .....................................................274
RRP 3.3 Lower Turn Roller Assembly ...........................................275
RRP 3.4 Tray 1 Low Paper Sensor ...............................................276

xiv Phaser 5400 Laser Printer Service Guide
RRP 3.5 Tray 1 Right Guide Assembly .........................................277
RRP 3.6 Tray 1 Left Guide Assembly............................................279
RRP 3.7 CRUM Board...................................................................281
RRP 3.8 MBF Assembly Position Sensor......................................282
RRP 4.1 Paper Transport Assembly..............................................283
RRP 4.2 Registration Actuator.......................................................285
RRP 4.3 Registration Clutch..........................................................286
RRP 4.4 Registration Sensor.........................................................287
RRP 5.1 Fuser Assembly ..............................................................288
RRP 5.2 Stack Full Sensor ............................................................289
RRP 5.3 Exit Roller Assembly .......................................................291
RRP 5.4 Stack Full Sensor Actuator..............................................294
RRP 6.1 Main Drive Gear Assembly .............................................295
RRP 7.1 Laser Assembly...............................................................297
RRP 7.2 Right Print Cartridge Guide Assembly ............................299
RRP 7.3 Toner Sensor Assembly..................................................301
RRP 7.4 Top Cover Interlock Switch .............................................302
RRP 7.5 Left Print Cartridge Guide Assembly...............................303
RRP 7.6 Bias Transfer Roller [BTR] Assembly..............................304
RRP 8.1 System Controller PWB ..................................................305
RRP 8.2 High-Voltage Power Supply [HVPS] Board.....................307
RRP 8.3 Duplex Interface Board ...................................................308
RRP 8.4 Main Fan .........................................................................309
RRP 8.5 Print Engine Controller Board .........................................310
RRP 8.6 Low-Voltage Power Supply [LVPS] Assembly ................312
RRP 8.7 LVPS FAN.......................................................................313
RRP 8.8 AC Input Assembly..........................................................314
RRP 8.9 Control Panel +5 VDC Power Supply..............................315
RRP 9.1 Duplex Assembly ............................................................317
RRP 10.1 1000-Sheet High Capacity Stacker [HCS] ....................318
RRP 10.2 HCS Top Cover.............................................................319
RRP 10.3 HCS Rear Cover Assembly...........................................320
RRP 10.4 HCS Front Cover...........................................................321
RRP 10.5 HCS Exit Gate Solenoid................................................322
RRP 10.6 HCS Stack Full Sensor .................................................323
RRP 10.7 HCS Stack Full Sensor Actuator ...................................324
RRP 10.8 HCS Drive Motor Assembly ..........................................325
RRP 10.9 HCS Rear Cover Interlock Switch .................................326
RRP 10.10 HCS Paper Sensor......................................................327
RRP 11.1 500-Sheet Feeder Removal ..........................................328
RRP 11.2 Front Cover ...................................................................329
RRP 11.3 Left Cover......................................................................330
RRP 11.4 Right Cover ...................................................................331

Phaser 5400 Laser Printer Service Guide xv
RRP 11.5 Rear Cover....................................................................332
RRP 11.6 Drive Assembly .............................................................333
RRP 11.7 Feeder Board ................................................................334
RRP 11.8 Feed Head Assembly ....................................................335
RRP 11.9 Feed Rollers ..................................................................336
RRP 11.10 Feed Solenoid .............................................................337
RRP 11.11 Turn Roller Assembly ..................................................338
RRP 11.12 Retard Chute Assembly ..............................................339
RRP 11.13 Left Tray Guide ...........................................................340
RRP 11.14 Right Tray Guide .........................................................342
RRP 11.15 Retard Holder Assembly .............................................344
RRP 11.16 Retard Turn Roller Assembly ......................................345
RRP 11.17 Paper Size Sensor ......................................................346
RRP 11.18 Paper Tray Sensor ......................................................347
RRP 11.19 No Paper Sensor.........................................................348
RRP 11.20 No Paper Sensor Actuator ..........................................350
RRP 11.21 Preregistration Sensor ................................................351
RRP 12.1 Removing the 2000-Sheet Feeder ................................352
RRP 12.2 Left Side Cover .............................................................354
RRP 12.3 Upper Rear Cover .........................................................355
RRP 12.4 Lower Rear Cover .........................................................356
RRP 12.5 Right Side Cover ...........................................................357
RRP 12.6 Front Cover ...................................................................358
RRP 12.7 Tray Assembly ..............................................................359
RRP 12.8 2000-Sheet Feeder PWB ..............................................360
RRP 12.9 Tray Lift Motor Assembly ..............................................361
RRP 12.10 A4 Paper Size Sensor.................................................362
RRP 12.11 Casters ........................................................................363
RRP 12.12 Harness Assembly ......................................................364
RRP 12.13 Drive Assembly ...........................................................365
RRP 12.14 Feed, Nudger, and Retard Roller ................................366
RRP 12.15 Paper Height Sensor ...................................................367
RRP 12.16 Paper Feed Motor Assembly.......................................368
RRP 12.17 Link Stopper ................................................................369
RRP 12.18 No Paper Sensor.........................................................370
RRP 12.19 No Paper Sensor Actuator ..........................................371
RRP 12.20 Left and Right Wire Cover ...........................................372
RRP 12.21 Shaft Cover Assembly.................................................373
RRP 12.22 Drive Shaft Assembly..................................................374
RRP 12.23 Brake Assembly ..........................................................375
RRP 12.24 Left Tray Wires............................................................376
RRP 12.25 Right Tray Wires .........................................................377
RRP 12.26 Retard Assembly .........................................................378

xvi Phaser 5400 Laser Printer Service Guide
FRU Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381
Introduction ..........................................................................................381
Organization of this Section ...........................................................381
Using the Parts List........................................................................382
Parts Lists ............................................................................................384
PL 1.1 Covers ................................................................................384
PL 2.1 Paper Tray [A3/Ledger] ......................................................386
PL 2.2 Paper Tray [A4/Letter] ........................................................388
PL 3.1 Paper Feeder .....................................................................390
PL 4.1 Multi-sheet Bypass Feeder (MBF) Assembly .....................392
PL 4.2 Paper Handler ....................................................................394
PL 5.1 Paper Transport .................................................................396
PL 6.1 Rear Cover Assembly With Fuser ......................................398
PL 7.1 Frame & Drives ..................................................................400
PL 8.1 Xerographics ......................................................................402
PL 9.1 Electrical (1 of 2) ................................................................404
PL 9.2 Electrical (2 of 2) ................................................................406
PL 10.1 High Capacity Stacker [HCS] (1 of 2)...............................408
PL 10.2 High Capacity Stacker [HCS] (2 of 2)...............................410
PL 11.1 500-Sheet Feeder (1 of 3) ................................................412
PL 11.2 500-Sheet Feeder (2 of 3) ................................................414
PL 11.3 500-Sheet Feeder (3 of 3) ................................................416
PL 12.1 2000-Sheet Feeder (1 of 4) ..............................................418
PL 12.2 2000-Sheet Feeder (2 of 4) ..............................................420
PL 12.3 2000-Sheet Feeder (3 of 4) ..............................................422
PL 12.4 2000-Sheet Feeder (4 of 4) ..............................................424
PL 13.1 Duplex Assembly..............................................................426
Xerox Supplies and Accessories..........................................................428
Plug/Jack Connector Locations. . . . . . . . . . . . . . . . . . . . . . . . . .433
Contents ...............................................................................................433
Plug/Jack (P/J) Locations for the Engine .............................................434
Plug/Jack Location Map 1 - Engine......................................................437
Plug/Jack Location Map 2 - Engine......................................................438
Plug/Jack Location Map 3 - Engine......................................................439
Plug/Jack Location Map 4 - 500-Sheet Feeder ....................................440
Plug/Jack Location Map 5 - Duplex Assembly .....................................442
Plug/Jack Location - 1000-Sheet (High Capacity) Stacker ..................444
Plug/Jack Location - 2000-Sheet Feeder.............................................446
Plug/Jack Location Map 7 - 2000-Sheet Feeder ..................................447

Phaser 5400 Laser Printer Service Guide xvii
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 449
Wiring Diagram Notations ....................................................................449
Organization .........................................................................................450
Master Connection and Wiring Diagram........................................451
Base Engine Wiring Diagrams .......................................................454
500-Sheet Feeder..........................................................................465
Duplex Assembly ...........................................................................467
1000-Sheet (High Capacity Stacker) .............................................468
2000-Sheet Feeder........................................................................469

xviii Phaser 5400 Laser Printer Service Guide
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Phaser 5400 Laser Printer Service Guide xix
List of Figures
Figure 1 Machine Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2 Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 3 Rear View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 4 View from Right Front. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 5 View from Left Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 6 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 7 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8 Print Engine Assemblies, Sensors and Interlock Locations 1 -
Tray 1 and MBF Paper Path Components 1 . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 9 FRU Assemblies, Sensors and Interlock Locations 2 . . . . . . . . . . . . . . . . . 10
Figure 10 FRU Assemblies, Sensors and Interlock Locations 3 - Detack Saw,
Registration & Bias Transfer Rollers and Paper Transport Assembly . . . 11
Figure 11 FRU Assemblies, Sensors and Interlock Locations 4 - Fuser Area . . . . . . 12
Figure 12 FRU Assemblies, Sensors and Interlock Locations 5 - Main Drive . . . . . . 13
Figure 13 FRU Assemblies, Sensors and Interlock Locations 6 -
FRU Circuit Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 14 Paper Path Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 15 Paper Path Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 16 Service Flowchart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 17 Fuser Connector P174 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Figure 18 Light Prints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Figure 19 Blank Prints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Figure 20 Spots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Figure 21 Horizontal (Scan) Deletions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
Figure 22 Vertical (Process) Deletions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Figure 23 Spot Deletions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Figure 24 Vertical (Process) Streaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Figure 25 Horizontal (Scan) Streaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Figure 26 Residual Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
Figure 27 Black Prints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Figure 28 Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Figure 29 Uneven Density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Figure 30 Skewed Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Figure 31 Damaged Print . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Figure 32 Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Figure 33 Skips / Smears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Figure 34 Unfused Image . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Figure 35 Registration Test Pattern . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232