Color Jetprinter™ 2050, 2055
4077-20X, 30X
• Table of Contents
• Start Diagnostics
• Safety and Notices
• Trademarks
•Index
• Main Menu
Lexmark is a trademark of Lexmark
International, Inc., registered in the
United States and/or other countries.
Color Jetprinter is a trademark of
Lexmark International, Inc.
4077-20X, 30X
Second Edition (May, 1997)
The following paragraph does not apply to the United Kingdom or any country where such
provisions are inconsistent with local la w: L EXMARK INTER NATIONAL, INC. PRO V IDES
THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do
not allow disclaimer of e xpress or i mplied warr anties in certain transaction s, theref ore , this
statement may not apply to you.This publication could include technical inaccuracies or
typographical errors. Changes are periodically made to the information herein; these
changes will be incorporated in later editions of the publication. Improvements or changes
in the products or the programs described in this publication may be made at any time.
Publications are not stocked at the address given below; requests for publications should
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Comments may be addressed to Lexmark International, Inc., Department
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or distribute any of the information you supply in any way it believes appropriate without
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Lexmark is a trademark of Lexmark International, Inc., registered in the United States
and/or other countries. Color Jetprinter is a trademark of Lexmark International, Inc.
Other trademarks are the property of their respective owners.
© Copyright Lexmark International, Inc. 1996, 1997.
All Rights Reserved.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
This software and documentation are provided with RESTRICTED RIGHTS. Use,
duplication or disclosure by the Government is subject to restrictions as set forth in
subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer Software clause at
DFARS 252.227-7013 and in applicable FAR provisions: Lexmark International, Inc.,
Lexington, KY 40550.
4077-20X, 30X
Contents
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vi
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Resolution and Print Speed . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Maintenance Approach. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Unique Tools Required For Service. . . . . . . . . . . . . . . . . 1-2
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Error Indicator Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Power-On Self Test (POST) Sequence . . . . . . . . . . . . . . 2-2
POST Symptom Table . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Service Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
Envelope Feed Service Check. . . . . . . . . . . . . . . . . . . . . 2-6
First Print Line Service Check . . . . . . . . . . . . . . . . . . . . . 2-6
Maintenance Station Service Check . . . . . . . . . . . . . . . . 2-7
Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-8
Paper Path Service Check. . . . . . . . . . . . . . . . . . . . . . . 2-11
Parallel Port Service Check . . . . . . . . . . . . . . . . . . . . . . 2-12
Power Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . 2-13
Transport Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Encoder Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Paper Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Parallel Port Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Print NVRAM Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Test Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
1
iii
4077-20X, 30X
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Releasing Plastic Latches . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Base Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Carrier Belt Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Carrier Frame Assembly Removal . . . . . . . . . . . . . . . . . 4-4
Carrier Transport Motor Removal . . . . . . . . . . . . . . . . . . 4-5
Code Module Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Edge Guide Asm and Paper Load Shaft Removal . . . . . 4-6
Encoder Card Removal. . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Encoder Strip Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Exit Drive Belt Removal. . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Exit Roller Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Feed Arm Assembly Removal. . . . . . . . . . . . . . . . . . . . . 4-7
Front Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Gutter Pad Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Inside Idler Gears Removal. . . . . . . . . . . . . . . . . . . . . . . 4-9
Large Feed Roll Removal . . . . . . . . . . . . . . . . . . . . . . . 4-10
Large Outside Gear Removal . . . . . . . . . . . . . . . . . . . . 4-11
Left Side Frame Assembly Removal . . . . . . . . . . . . . . . 4-12
Maintenance Station Assembly Removal . . . . . . . . . . . 4-13
Maintenance Wipers and Caps Removal . . . . . . . . . . . 4-13
Manual Insert Tray Removal . . . . . . . . . . . . . . . . . . . . . 4-13
Mid Frame Assembly Removal . . . . . . . . . . . . . . . . . . . 4-13
Paper Feed Motor Removal . . . . . . . . . . . . . . . . . . . . . 4-14
Paper Guide and EOF Flag Assembly Removal. . . . . . 4-14
Paper Load Door Removal . . . . . . . . . . . . . . . . . . . . . . 4-16
Pick Roll Hub, Shaft and Envelope Bucklers Removal . 4-16
Power Supply Removal. . . . . . . . . . . . . . . . . . . . . . . . . 4-16
Printhead Cable, Cradle & Paper Deflector Removal . . 4-17
Printhead Carrier Assembly Removal . . . . . . . . . . . . . . 4-19
Printhead Rubber Backer Removal. . . . . . . . . . . . . . . . 4-19
Rear Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Right Side Frame Assembly Removal. . . . . . . . . . . . . . 4-20
Small Feed Roll Shaft, Rollers & Paper Flap Removal . 4-21
Star Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
System Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
System Board Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Encoder Card Connector. . . . . . . . . . . . . . . . . . . . . . . . . 5-2
iv
4077-20X, 30X
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Lubrication Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
How To Use This Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . 7-1
Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Assembly 2: Frames. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Assembly 3: Paper Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Assembly 4: Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Assembly 5: Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Assembly 6: Carrier Transport . . . . . . . . . . . . . . . . . . . . . . . 7-14
Assembly 7: Sheet Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Assembly 8: Maintenance Station . . . . . . . . . . . . . . . . . . . . 7-18
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X-1
v
4077-20X, 30X
Preface
This manual is divided into the following chapters:
1. General Information contains a general description of the
printer and the maintenance approach used to repair it. Special
tools and test equipment are listed in this chapter, as well as
general environmental and safety instructions.
2. Diagnostic Information contains error indicator table , symptom
table, and service checks used to isolate failing field replaceable
units (FRUs).
3. Diagnostic Aids contains tests and checks used to locate or
repeat symptoms of printer problems.
4. Repair Information provides instructions for making printer
adjustments and removing and installing FRUs.
5. Connector Locations uses illustr ations to identify the connector
locations and test points on the printer.
6. Preventive Maintenance contains the lubrication specifications
and recommendations to prevent problems.
7. Parts Catalog contains illustrations and part numbers for individual FRUs.
2
vi
4077-20X, 30X
Safety Information
•
The maintenance information for this product has been prepared
for use by a professional service person and is not intended to
be used by others.
•
There may be an increased risk of electric shock and personal
injury during disassembly and servicing of this product.
Professional service personnel should understand this and take
necessary precautions.
•
The safety features of some parts may not always be obvious.
Therefore, replacement parts must have the identical or
equivalent characteristics as the original parts.
Sicherheitshinweise
•
Die Wartungsinformationen für dieses Produkt wurden zur
Verwendung durch einen Wartungsfachmann entwickelt und
sollten nicht von anderen benützt werden.
•
Zusätzliches Risiko eines elektrischen Schlags und körperlicher
Verletzung existiert während des Auseinandernehmens und der
Wartung des Geräts. Fachpersonal sollte im vollen Verständnis
der Lage entsprechende Vorsichtsmaßnahmen ergreifen.
•
Ersatzteile müssen gleiche oder gleichwertige Merkmale wie die
Originalteile aufweisen, da Sicherheitsvorkehrungen nicht immer
offensichtlich sind.
Consignes de Sécurité
•
Les consignes d'entretien et de réparation de ce produit
s'adressent uniquement à un personnel de maintenance
qualifié.
•
Le démontage et l'entretien de ce produit pouvant présenter
certains risques électriques, le personnel d'entretien qualifié
devra prendre toutes les précautions nécessaires.
•
Les normes de sécurité de certaines pièces n'étant pas toujours
explicites, les pièces de rechange doivent être identiques ou
conformes aux caractéristiques des pièces d'origine.
Preface
vii
4077-20X, 30X
Norme di sicurezza
•
Le informazioni riguardanti la manutenzione di questo prodotto
sono indirizzate soltanto al personale dell'assistenza
autorizzato.
•
Durante lo smontaggio e il manutenzionamento di questo
prodotto, è possibile il rischio accresciuto di scosse elettriche e
danni personali. Il personale di assistenza autorizzato,
consapevole di ciò, deve adottare le precauzioni necessarie.
•
È possibile che le funzioni di sicurezza di alcuni elementi non
siano così ovvie, quindi, i pezzi di ricambio devono avere
caratteristiche identiche o equivalenti a quelle dei pezzi originali.
Pautas de Seguridad
•
La información sobre el mantenimiento de este producto fue
escrita para el personal de mantenimiento cualificado y no para
cualquier otro usuario.
•
Existen mayores riesgos de descargas eléctricas y daños
personales durante el desmontaje y la reparación de la
máquina. El personal cualificado comprende esto y toma las
precauciones necesarias.
•
Los dispositivos de seguridad de algunas partes quizá no
siempre puedan ser reconocidas a simple vista. Por lo tanto, las
partes de reemplazo deben poseer características idénticas o
equivalentes a las partes originales.
Sikkerhedsoplysninger
•
Oplysningerne om vedligeholdelse af dette produkt er forberedt
med henblik på professionelt servicepersonale, og bør derfor
ikke benyttes af andre.
•
Risikoen for elektrisk stød øges under demontering og service af
dette produkt, hvorfor der bør tages de nødvendige
forholdsregler.
•
Sikkerhedsforanstaltningerne er ikke altid lige åpenbare for alle
reservedele. Der bør derfor kun anvendes originale reservedele
eller reservedele med samme egenskaber som de oprindelige.
viii
4077-20X, 30X
Informações de Segurança
•
As informações de segurança relativas a este produto destinam-
se a profissionais destes serviços e não devem ser utilizadas
por outras pessoas.
•
Risco de choques eléctricos e ferimentos graves durante a
desmontagem e manutenção deste produto. Os profissionais
destes serviços devem estar avisados deste facto e tomar os
cuidados necessários.
•
Os dispositivos de segurança de algumas peças poderão não
ser sempre suficientemente evidentes. Assim, as peças
sobressalentes devem possuir características idênticas ou
equivalentes às peças originais.
Chinese Safety Information
Preface
ix
4077-20X, 30X
Korean Safety Information
x
4077-20X, 30X
1. General Information
The Color Jetprinter™ 2050, 2055 (4077-20X, 30X) printers are
personal, near laser-quality ink jet printers. The print cartridge
contains single-unit customer-replaceable supply items. Dual
printheads provide color and true black printing without changing
printheads. The black cartridge has a total of 56 nozzles and installs
on the left. The color cartridge has a total of 48 nozzles and installs
on the right. These printers are capable of printing in two directions
from either cartridge.
Resolution and Print Speed
Color Black
600 X 300 dpi
600 X 600 (using special paper)
167 cps - Letter Quality
300 cps - Draft
600 X 300 dpi
600 X 600 (using special paper)
230 cps - Letter Quality
300 cps - Draft
Power Consumption
•
Less than 2 Watts - power off and power to the printer
•
7.5 Watts - Idle Mode (power on - not printing)
•
12 Watts - Printing (average)
•
25 Watts - Printing (peak)
Maintenance Approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the error indicator charts,
symptom index, service checks, and diagnostic aids to determine
the symptom and repair the failure. Begin with “Start” on page 2-1.
This printer can be serviced without being connected to a host
computer. The user is directed, in the Printer Control program, to
perform the head to head and bidirectional alignment adjustments
after replacing a print cartridge.
General Information 1-1
4077-20X, 30X
Abbreviations
CE Customer Engineer
CSU Customer Setup
ESD Electrostatic Discharge
FRU Field Replaceable Unit
HVPS High Voltage Power Supply
LED Light-Emitting Diode
LVPS Low Voltage Power Supply
NVRAM Nonvolatile Random Access Memory
OEM Original Equipment Manufacturer
POST Power-On Self Test
V ac Volts alternating current
V dc Volts direct current
ZIF Zero Insertion Force
Unique Tools Required For Service
Parallel Wrap Plug P/N 1319128
1-2
4077-20X, 30X
2. Diagnostic Information
Use the error indicator table, symptom tables, service checks, and
diagnostic aids to determine the failing part.
Start
Service error indications show as a series of blinks of the Power
light. There is a pause between each series of blinks. If your printer
has an error indication, locate the series of blinks in the “Error
Indicator Table” on page 2-2 and take the indicated action. Unplug
the printer to clear the error indicator.
If an error indicator appears, go to the error indicator table and take
the indicated action for that error.
1. Run the “Print NVRAM Contents” on page 3-4. The last error
appears at the bottom of the page.
2. Run the “Test Page” on page 3-5. If no error appears, go to
“Power-On Self Test (POST) Sequence” on page 2-2.
Diagnostic Information 2-1
4077-20X, 30X
Error Indicator Table
Number
Error
Code
of
Power
Light
Flashes
Action
64
65
66 78
79
81
83
89
127
and
up
7
6
9
2
8
4
10
Replace the Code Module and/or system board.
Replace the Code Module and/or system board.
Replace the Code Module and/or system board.
Go to the “Transport Service Check” on page 2-15.
Replace the Code Module and/or system board.
Go to the “Transport Service Check” on page 2-15.
Replace the Code Module and/or system board.
Power-On Self Test (POST) Sequence
When you turn the printer on it performs a POST. Turn your printer
on and check for a correct POST operation by observing the
following:
1. The power light comes on.
2. The carrier moves over the maintenance station and seals the
printheads.
3. The paper feed gears turn.
4. All motors stop and the power light stays on.
If your printer completes POST with no errors, go to the “Symptom
Tables” on page 2-4, locate the symptom and take the indicated
action.
If your printer does not complete POST, locate the symptom in the
following table and take the indicated action.
2-2
4077-20X, 30X
POST Symptom Table
Symptom Action
No Power light
and no motors
run
Feeds paper Go to the “First Print Line Service Check” on page 2-6.
Paper feed
gears do not
turn
Carrier
doesn’t move
Carrier slams
side frame
Go to the “Power Service Check” on page 2-12.
Go to the “Paper Feed Service Check” on page 2-8.
Go to the “Transport Service Check” on page 2-15.
Go to the “Transport Service Check” on page 2-15.
Diagnostic Information 2-3
4077-20X, 30X
Symptom Tables
Locate the symptom in the following tables and take the appropriate
action.
Carrier Transport Problems
Symptom Action
• No carrier movement
• Slow carrier movement
• Carrier stops
• Carrier slams side frame
Go to the “Transport Service Check”
on page 2-15.
Communications Problems
Symptom Action
Printer not communicating with
host computer.
Go to the “Parallel Port Service
Check” on page 2-12.
Maintenance Station Problems
Symptom Action
• Fails to cap the printhead
• Fails to clean the printhead
Go to the “Maintenance Station
Service Check” on page 2-7.
2-4
4077-20X, 30X
Paper Feed Problems
Symptom Action
Paper fails to stop at first print line Go to the “First Print Line Service
Check” on page 2-6.
• Fails to pick paper
• Picks more than one sheet of
paper
• Picks paper but fails to feed
• Paper jams
• Paper fails to exit
• Noisy paper feed
Envelopes fail to feed Go to the “Envelope Feed Service
Paper skews Go to the “Paper Path Service
Go to the “Paper Feed Service
Check” on page 2-8.
Check” on page 2-6.
Check” on page 2-11.
Power Problems
Symptom Action
No power in printer, no Power
light, no motors
Go to the “Power Service Check” on
page 2-12.
Print Quality Problems
Symptom Action
• Voids in characters
• Light print
• Prints off the page
• Fuzzy print
• Carrier moves but does not
print
• Printhead drying prematurely
• Vertical alignment off
Go to the “Print Quality Service
Check” on page 2-13.
• Ink smearing
• Vertical streaks on paper
• Print lines crowded
Go to the “Paper Feed Service
Check” on page 2-8.
Diagnostic Information 2-5
4077-20X, 30X
Service Checks
Envelope Feed Service Check
FRU Action
1 Envelope Guide Be sure the envelope guides have been turned
to the envelope load positions.
Be sure the envelope guides are against the
envelopes.
Perform the “Paper Feed Service Check” on
page 2-8.
First Print Line Service Check
FRU Action
1 End-of-Forms
Flag
2 End-of-Forms
Sensor
3 System Board Perform the “Paper Sensor Test” on page 3-2
4 Feed Arm
Assembly
Check the flag for binds or damage.
Check the sensor for dirt.
to check the end-of-forms sensor on the
system board.
Check all parts of the feed arm assembly for
binds, wear, or damage.
2-6
4077-20X, 30X
Maintenance Station Service Check
The maintenance station has two functions:
1. Cleans the printhead nozzles during the print operation.
2. Seals the printhead when it is not being used to prevent the
nozzles from drying.
FRU Action
1 Maintenance
Station Assembly
2 Wiper A worn wiper causes degraded print quality just
3 Cap A worn cap causes the printhead nozzles to dry
As the carrier moves to the right over the
maintenance station, a slot on the bottom of the
carrier engages a tab on the sled of the
maintenance station causing the caps to rise and
seal the printheads. Carrier movement to the left
will uncap the printheads. The wipers clean the
printhead nozzles as the carrier leaves the
maintenance station. The wipers clean the
printheads only when the carrier is moving to the
left. There should be no wiping action of the
printhead nozzles when the carrier is moving to
the right. After the cleaning operation is complete,
a tab on the maintenance station engages a tab on
the carrier, causing the wipers to lower.
Check the maintenance station for worn or broken
parts.
after a maintenance cleaning. Check for loose or
worn wiper.
and clog. Check for loose or worn cap.
Diagnostic Information 2-7
4077-20X, 30X
Paper Feed Service Check
If your printer does not have paper jam problems, continue with the
service check. If your printer does have a paper jam problem,
examine it for the following before you begin the service check:
•
Check the entire paper path for obstructions.
•
Be sure there is not too much paper in the sheet feeder.
•
Be sure the correct type of paper is being used.
•
Check for static in the paper.
FRU Action
1 System Board With J12 disconnected and power on, check for
+24 V dc between J12-3 and ground on the
system board. If the voltage is not present, check
for motor pins shorted to the motor housing. If you
find a shorted pin, replace the motor. If you still
have a failure after replacing the motor , replace the
system board.
2-8
4077-20X, 30X
FRU Action
2 Paper Feed Motor A noisy or chattering motor or a motor that fails to
turn, can be caused by:
• An open or short in the motor
• An open or short in the motor driver on the
system board
• A bind in the paper feed mechanism
With the paper feed motor cable disconnected
from the system board, check for 100 ohms ±20
ohms) between the following pins on the motor.
Pin 1 to Pin 3
Pin 2 to Pin 3
Pin 3 to Pin 4
Pin 3 to Pin 5
If the reading is incorrect, replace the motor.
Check for motor pins shorted to the motor housing.
If you find a shorted pin, replace the motor. If the
failure remains, replace the system board.
Although the paper feeds in a forward direction
only, the paper feed motor turns in two directions.
If the paper feed motor turns in one direction only,
replace the system board.
Binds in the paper feed motor or gear train can
cause intermittent false paper jam errors. Remove
the paper feed motor and check the shaft for binds.
Also check for loose or worn motor gear.
3 Gears Check for binds in the gear train and paper feed
4 Feed Arm
Assembly
mechanism by rotating the large feed roll by hand.
If you notice a bind, isolate it by removing one of
the small idler gears on the inside of the left side
frame. Replace any worn or binding gears or
rollers.
At the beginning of the paper feed operation, the
paper feed motor reverses momentarily to allow
the feed arm pawl to drop off the home position
notch in the left side frame. If the pawl f ails to drop
off the notch, check the feed arm assembly for
binds, and worn or broken parts.
Diagnostic Information 2-9
4077-20X, 30X
FRU Action
5 Sheet Feeder Check the following for wear or damage:
• Pick Rollers
• Envelope Bucklers
• All parts inside the left and right edge guides.
6 End-of-Forms
Flag Spring
Check for binds or damage.
2-10
4077-20X, 30X
Paper Path Service Check
Examine the printer for the following before you begin this service
check:
•
Check the entire paper path for obstructions.
•
Be sure the paper guides are not worn or broken and are positioned against the paper without binding or buckling the paper.
•
Be sure the correct type of paper is being used.
•
Be sure the printer is installed on a flat surface.
FRU Action
1 Large and Small
Feed Rollers
2 Small Feed Roller
Springs
Paper Guide
Paper Flap
3 Star Rollers
Exit Drive Belt
4 Sheet Feeder Check the following for wear or damage:
5 End-of-Forms
Flag & Spring
Check for wear and binds.
Check for damage.
Check for wear and binds.
• Pick Rollers
• Envelope Bucklers
• All parts inside the left and right edge guides.
Check for binds or damage.
Diagnostic Information 2-11
4077-20X, 30X
Parallel Port Service Check
FRU Action
1 Parallel Port Run a test page to be sure the printer can print.
Run the “Parallel P ort Test” on page 3-3. If the test
fails, replace the system board.
Power Service Check
FRU Action
1 Power Supply Disconnect J11 from the system board and check
2 Printhead Cable
Parallel Cable
Encoder Card
3 System Board If the symptom has not changed, replace the
the following voltages on the power supply cable:
• J11-1 to GND = +5 V dc
• J11-3 to GND = +24 V dc
If you do not have correct voltage, replace the
power supply. Be sure to unplug the printer before
you reconnect the power supply to the system
board.
Turn off the printer. Disconnect one of the
printhead cables and turn on the printer. Look for a
symptom change. Check the failing part for shorts
and replace as necessary. Repeat this procedure
for the parallel cable and the encoder card.
system board.
2-12
4077-20X, 30X
Print Quality Service Check
FRU Action
1 Print Cartridge Be sure the printer contains good print cartridges.
2 Printhead Carrier
Assembly
3 System Board
Printhead Cable
Rubber Backer
Reseat the printhead cables in the system board
and check the following parts for wear or damage:
• Print Cartridge Latch
• Latch Spring
•Carrier
• Perform the “Test Page” on page 3-5. Look for a
break in the diagonal line of the test pattern. A
broken line indicates one or more print nozzles
are not working. Run the test again to verify the
failure. If there are even breaks in the diagonal
line similar to the pattern shown below, replace
the system board.
If there is a single break or random breaks in the
diagonal line check the following:
• Check the gold-plated contacts, on the end of
the cable that connect to the carrier, for dirt and
wear. Use only a clean dry cloth to clean the
contacts. Also check the cable for damage. You
may need to remove the cable from the carrier
to inspect it.
• A worn rubber backer results in poor contact
between the printhead cable and the print
cartridge. Check the rubber backer for wear.
4 Maintenance
Station
Intermittent nozzle failures can be caused by worn
parts in the maintenance station. Perform the
“Maintenance Station Service Check” on page 2-7,
then return to this check.
Diagnostic Information 2-13
4077-20X, 30X
FRU Action
5 Paper Feed Ink smudging and smearing can be caused by
paper problems or problems in the paper feed
area.
Check the following:
• Correct type of paper is being used. Also check
the paper for curl or wrinkles.
• Feed rollers for wear, dirt, or looseness.
• Gears for wear or binds.
• Paper path for obstructions.
6 T r ansport Blurred print and voids can be caused by problems
in the transport area. Check the following:
• Transport belt for wear.
• Carrier guide rod for wear or dirt.
• Carrier to carrier frame engagement, the carrier
guide rod and carrier bearing surfaces should
be lubricated with grease P/N 1329301.
• Idler pulley parts for wear, damage, or
looseness.
• Encoder strip for wear or dirt.
7 Alignment Uneven vertical lines can be adjusted by
performing the bidirectional alignment. The user is
directed, through the Printer Control program, to
perform the head to head and bidirectional printing
alignments, when replacing a print cartridge.
2-14
4077-20X, 30X
Transport Service Check
FRU Action
1 Transport Motor Check the motor for binds, or loose motor pulley.
Disconnect the transport motor (J6) from the
system board. Check for 8 to 18 ohms between
pins 2 and 3 on the motor cable. If the reading is
incorrect, replace the motor.
Check for motor pins shorted to the motor housing.
If you find a pin shorted to the housing, replace the
motor. If the failure remains, replace the system
board.
2 System Board Turn the printer off and disconnect J6 from the
3 Carrier Guide Rod Clean the carrier rod.
4 Transport Belt
Idler Pulley Parts
Carrier Frame
5 Encoder Strip Check for wear and dirt.
6 Printhead Cable
Encoder Strip
Encoder Card
System Board
7 Maintenance
Station
system board. Turn the printer on and check for a
pulse of 6 to 8 V dc between J6-2 and ground as
the printer goes through POST.
Lubricate the rod or the carrier rod bearing surface
with grease P/N 1329301.
Check for worn, loose or broken parts. Check for
obstructions blocking carrier movement.
Carrier to carrier frame engagement should be
lubricated with grease P/N 1329301.
Be sure connector J4 is fully seated. Check the
cable for damage.
Perform the “Encoder Sensor T est” on page 3-1. If
you cannot enter the test, replace the system
board.
A problem with the maintenance station can cause
carrier movement problems at the right margin. Go
to the “Maintenance Station Service Check” on
page 2-7.
Diagnostic Information 2-15
4077-20X, 30X
3. Diagnostic Aids
Use these diagnostic test procedures to verify a repair.
Encoder Sensor Test
This test disables the printer motors to allow you to manually move
the carrier to verify the encoder is working correctly.
To run the test:
1. Turn the printer off.
2. Remove the front cover.
3. Disconnect the transport motor connector J-6 at the system
board.
4. Turn the printer on.
5. After a few seconds, the power light blinks 1 time. The power
light blinks as the carrier moves.
If the test fails, pow er off the printer and remov e the carrier assembly
without unplugging the printhead cable.
Power on the printer and check for +5 V dc at pins 1, 2 and 3 of the
encoder card connector.
1. If voltage is not present, check the printhead cable for opens to
the encoder card. If the printhead cable is good, replace the
system board.
2. If voltage is present, check the sensor on the encoder card by
monitoring pin 3 of the encoder card connector as you pass a
piece of paper through the sensor. The voltage should go from
+5 V dc to 0 V dc. Turn the power off and back on to make this
check again. If the voltage at pin 3 does not change, replace the
encoder card. If the symptom remains, replace the printhead
cable.
Diagnostic Aids 3-1
4077-20X, 30X
Paper Sensor Test
This test checks the paper sensor on the system board.
During the test, the power light remains on. The Busy light reflects
the paper sensor status in the following manner:
•
On - paper is in sensor
•
Off - paper is not in sensor
To run the test:
1. Turn the printer off.
2. Remove the front cover.
3. Disconnect the transport motor connector J-6 at the system
board.
4. Turn the printer on.
5. After a few seconds, the power light blinks 1 time. After a short
pause, the power light blinks continually.
6. Move the carrier to the left away from the maintenance station.
7. Release the carrier and insert paper into the manual feed slot.
As paper is inserted and removed from the paper switch, the
light should change from on to off. The light change indicates
the position of the switch has changed.
Diagnostic Aids 3-2
4077-20X, 30X
Parallel Port Test
This test performs a wrap around test between the printer parallel
port and the parallel port test connector.
This test requires a parallel port wrap plug. Install the wrap plug in
the parallel port before you start the test.
To run the test:
1. Turn the printer off and unplug the machine.
2. Attach the wrap plug to the parallel port (P/N 1319128).
3. Position the left edge of the printhead carrier at the center of the
third exit roller.
4. Turn the printer on.
The power light stays on if the test runs successfully. A failure occurs
if the power light does blinks. The test continues until power is
turned off. Irregularity of the blinking of the power light, is an
indication of an intermittent problem. This test should run for a few
moments to verify no intermittent problems exist.
3-3
4077-20X, 30X
Print NVRAM Contents
This test prints the contents of NVRAM in hexadecimal format.
To run the test:
1. Turn the printer off.
2. Position the left edge of the printhead carrier at the center of the
second exit roller from the left.
3. Turn the printer on.
The test prints English for easy recognition. The following appears
on the right side of the printout:
•
Device ID
The following appears below the printout:
•
Code Level
•
Code Level Date
•
Last Error
•
Page Count
Diagnostic Aids 3-4
4077-20X, 30X
Test Page
This test prints the test page.
To run a complete test page of black and color patterns, be sure the
print cartridges are in good condition. Install a black print cartridge in
the left side of the printhead cradle and a color print cartridge in the
right side.
To enter the test:
1. Turn the printer off.
2. Position the left edge of the printhead carrier at the center of the
left-most exit roller.
3. Turn the printer on.
The test page will contain the following:
•
Code level and date
•
Nozzle test pattern for both cartridges
•
Bidirectional alignment pattern
•
Vertical and horizontal test patterns
•
Purge test for both cartridges
•
Text (Color Jetprinter 2050)
3-5
4077-20X, 30X
4. Repair Information
This chapter explains how to make adjustments to the printer and
how to remove defective parts.
Note: Read the following before handling electronic parts. When
working on the printer, alwa ys unplug the printer from the wall outlet.
High voltage is present in the power supply as long as it is plugged
into the wall outlet.
Handling ESD-Sensitive Parts
Many electronic products use parts that are known to be sensitive to
electrostatic discharge (ESD). To prevent damage to ESD-sensitive
parts, follow the instructions below in addition to all the usual precautions, such as turning off power before removing logic boards:
•
Keep the ESD-sensitive part in its original shipping container (a special
“ESD bag”) until you are ready to install the part into the printer.
•
Make the least-possible movements with your body to prevent an
increase of static electricity from clothing fibers, carpets, and furniture.
•
Put the ESD wrist strap on your wrist. Connect the wrist band to the
system ground point. This discharges any static electricity in your body
to the printer.
•
Hold the ESD-sensitive part by its edge connector shroud (cover); do
not touch its pins. If you are removing a pluggable module , use the correct tool.
•
Do not place the ESD-sensitive part on the printer cover or on a metal
table; if you need to put down the ESD-sensitive part for any reason,
first put it into its special bag.
•
Printer covers and metal tables are electrical grounds. They increase
the risk of damage because they make a discharge path from your
body through the ESD-sensitive part. (Large metal objects can be discharge paths without being grounded.)
•
Prevent ESD-sensitive parts from being accidentally touched by other
personnel. Install printer covers when you are not working on the
printer, and do not put unprotected ESD-sensitive parts on a table.
•
If possible, keep all ESD-sensitive parts in a grounded metal cabinet
(case).
•
Be extra careful in working with ESD-sensitive parts when cold weather
heating is used because low humidity increases static electricity.
Repair Information 4-1
4077-20X, 30X
Adjustments
The user is directed, in the Printer Control program, to perform the
head to head and bidirectional alignment adjustments after replacing
a print cartridge.
Removal Procedures
The following procedures are arranged according to the name of the
printer part discussed. Unplug the power cord before removing any
parts.
Releasing Plastic Latches
Many of the parts are held in place with plastic latches. The latches
break easily; release them carefully . To remove such parts, press the
hook end of the latch away from the part to which it is latched.
4-2
4077-20X, 30X
Base Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Disconnect the power supply connector at the system board.
4. Remove the screw from the maintenance station assemb ly. Pull
up the right side of the mid frame assembly and pull forward and
remove the maintenance station assembly.
5. Remove the two screws securing the carrier frame to the base
cover.
6. Slide the printer off the base cover.
Carrier Belt Removal
1. Remove the front cover.
2. Remove the carrier assembly.
3. Push the idler pulley to the right to release the tension on the
belt and remove the belt.
Repair Information 4-3
4077-20X, 30X
Carrier Frame Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the base assembly.
4. Disconnect the paper feed motor connector from the system
board.
5. Remove the four scre ws [A] securing the carrier frame to the left
and right side frames and remove the carrier frame assembly.
4-4
4077-20X, 30X
Note: During reassembly:
1. Be sure the small feed roll spring extensions [B] are in the
groves of the small feed roll arms.
2. Be sure the short extensions of the two paper flap springs are
trapped under the carrier frame [C].
Carrier Transport Motor Removal
1. Remove the front cover.
2. Disconnect the transport motor connector from the system
board.
3. Remove the belt from the transport motor pulley.
4. Remove the two screws securing the transport motor to the
carrier frame and remove the motor. Note the routing of the
motor cable.
Repair Information 4-5
4077-20X, 30X
Code Module Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Gently pry the Code Module from the system board noting the
position of the notch in the module. The notch is down.
Edge Guide Asm and Paper Load Shaft Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the paper load door and manual insert tray.
4. Remove the pick roll hub, shaft and envelope bucklers.
5. Remove the two screws from the right side frame.
6. Work the paper load shaft out of the side frames.
7. Pull up the bottom of the edge guides to separate them from the
top of the back plate and remove the assembly from the frames.
Note: When reinstalling, be sure the edge guide springs are turned
to the inside to maintain spring tension on the guides.
Encoder Card Removal
1. Remove the front cover.
2. Remove the printhead carrier assembly.
3. Disconnect the printhead cable from the encoder card.
4. Remove the screw from the encoder card and remove the card.
Encoder Strip Removal
1. Remove the front cover.
2. Remove the carrier assembly.
3. Gently release the tension on the encoder strip by flexing the
encoder strip tensioner and remove the encoder strip.
Note: When reinstalling the encoder strip, make sure the ends of
the strip are centered in their mounting notches and the strip does
not bind in the encoder card on the carrier.
4-6
4077-20X, 30X
Exit Drive Belt Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the carrier frame assembly.
4. Remove the paper load door and manual insert tray.
5. Remove the small feed roll shaft.
6. Unlatch the left side of the exit roller shaft and work the belt off
the exit roller pulley.
7. Pull up the four clips securing the mid frame to the large feed
roll and work the mid frame out of both side frames.
8. Spread the right side frame apart far enough to allow removal of
the exit drive belt.
Exit Roller Removal
1. Remove the front cover.
2. Remove the two screws from the star roller assembly and
remove the assembly.
3. Unlatch the left side of the exit roller and remove the exit drive
belt from the exit roller pulley.
4. Remove the exit roller.
Feed Arm Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the C-clip from the feed arm and remove the assemb ly.
Repair Information 4-7
4077-20X, 30X
Front Cover Removal
1. Place a screwdriver in slot [A] and release the cover latches.
2. Slide the cover forward and off the printer.
To reassemble:
1. Slide the cover over the matching pieces on the bottom cover.
2. Press in both sides opposite the cover latches until they latch.
Gutter Pad Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the base assembly.
4. Scrape the old gutter pad off the base.
4-8
4077-20X, 30X
Inside Idler Gears Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the printer from the base assembly.
4. Remove the paper feed motor.
5. Gently pry the two idler gears from the left side frame. Be
careful not to break the locking tabs [A].
Repair Information 4-9
4077-20X, 30X
Large Feed Roll Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the carrier frame assembly.
4. Using a small screwdriver, break the four prongs off the
compound idler gear and remove the idler gear.
5. Remove the large f eed roll from the mid frame b y pulling it out of
the four mounting clips. Spread the right side frame and remov e
the large feed roll.
Note: Install the compound idler gear after the printer is installed in
the base assembly.
4-10
4077-20X, 30X
Large Outside Gear Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the paper load door and manual insert tray.
4. Remove the C-clip from the feed arm assembly and remo v e the
feed arm assembly.
5. Remove the C-clip from the left side of the pick roll shaft.
6. Pull the pick roll shaft out far enough to remove the large gear.
Note: Gently pull the feed arm guide [A] on the left side frame
forward, then remove the large gear.
Repair Information 4-11
4077-20X, 30X
Left Side Frame Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the carrier frame assembly.
4. Remove the paper load door and manual insert tray.
5. Using a small screwdriver, break the four prongs off the
compound idler gear [A] and remove the idler gear.
6. Remove the two screws [B] securing the left side frame to the
back plate. Slide the left side frame off the back plate. Note the
relationship of the parts.
Note: Install a new compound idler gear [A] after the printer is
installed in the base assembly.
4-12
4077-20X, 30X
Maintenance Station Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the screw from the maintenance station assembly, lift
up the right side of the mid frame assembly and slide the
maintenance station assembly forward, out of the printer.
Maintenance Wipers and Caps Removal
1. Remove the front cover.
2. Push the carrier to the left away from the maintenance station.
3. Gently pull the caps and wipers off their mountings.
Note: When reinstalling the caps, be sure the cap is positioned with
the locking tabs to the left and right before pushing them down on
their mounting posts. Be sure the wipers are completely seated.
Manual Insert Tray Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the paper load door.
4. Spread the right side frame away from the manual insert tray
until the pins in the insert tray clear the frame.
5. Remove the manual insert tray from the left side frame.
Mid Frame Assembly Remo val
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the carrier frame assembly.
4. Remove the paper load door and manual insert tray.
5. Remove the small feed roll shaft.
6. Unlatch the left side of the exit roller shaft and work the belt off
the exit roller pulley.
7. Pull up the four clips securing the mid frame to the large feed
roll and work the mid frame out of both side frames.
Repair Information 4-13
4077-20X, 30X
Paper Feed Motor Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the base assembly.
4. Remove the two screws securing the paper feed motor and
remove the motor. Note the routing of the motor cable.
Paper Guide and EOF Flag Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the printhead carrier assembly.
4. Remove the carrier frame assembly.
5. Remove the encoder strip.
6. Remove the system board.
7. Remove the three small feed roll springs.
8. Push the locking tabs [A] to the rear and pull the paper guide
down and out of the carrier frame.
4-14
4077-20X, 30X
Note: During reassembly:
1. Be sure the small feed roll spring extensions [B] are in the
groves of the small feed roll arms.
2. Be sure the short extensions of the two paper flap springs are
trapped under the carrier frame [C].
Repair Information 4-15
4077-20X, 30X
Paper Load Door Removal
Spread the left side frame where it joins the paper load door and
remove the door.
Pick Roll Hub, Shaft and Envelope Bucklers Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the paper load door and manual insert tray.
4. Slide the left paper guide to the right.
5. Remove the C-clip from the left side of the pick roll shaft.
6. Pull the pick roll shaft out to the left and remove the pick roll
shaft, hubs and envelope bucklers.
Note: During reassembly, be sure the pick roll hubs are in the slots
at the bottom of the paper guides and the rolls are centered on the
pick pads.
Power Supply Removal
Note: When working on the printer, always unplug the printer from
the wall outlet. High voltage is present in the power supply as long
as it is plugged into the wall outlet.
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the base assembly.
4. Turn the base over, pull out on the latches, slide the power
supply forward and off the base assembly.
4-16
4077-20X, 30X
Printhead Cable, Cradle & Paper Deflector Removal
1. Remove the front cover.
2. Remove the printhead carrier assembly.
3. Disconnect the printhead cable from the encoder card. Note the
routing of the cable under the retaining clip on the carrier.
4. Separate the cradle from the printhead carrier assembly by
pushing out the cradle latches [A].
5. Feed the folded end of the printhead cable through the opening
in the carrier assembly and remove the cable.
Note: Use the illustration to assemble the carrier parts in the correct
sequence.
Repair Information 4-17
4077-20X, 30X
Note: Be sure the cable is secured under the three retaining clips
[B] on the back of the carrier.
4-18
4077-20X, 30X
Printhead Carrier Assembly Removal
1. Remove the front cover.
2. Unlock the four printhead cable connectors and disconnect the
printhead cable from the system board.
3. Remove the retainer from the right end of the carrier guide rod.
4. Slide the carrier guide rod to the left, out of the printer.
5. Lift the carrier out of the printer.
Printhead Rubber Backer Removal
1. Remove the front cover.
2. Remove the printhead carrier assembly.
3. Separate the cradle from the printhead carrier assembly by
pushing out the cradle latches [A].
4. Remove the rubber backer and paper deflector from under the
printhead carrier cable.
Note: Use the illustration to assemble the carrier parts in the correct
sequence.
Repair Information 4-19
4077-20X, 30X
Rear Cover Removal
1. Remove the front cover.
2. Place a screwdriver in slot [A] and release the cover latches.
3. Slide the cover up and off the printer.
4. To reassemble, place the cover over the tabs in the bottom
cover and press down until the cover latches. Be sure the
parallel connector snaps do not get trapped behind the cover.
Right Side Frame Assembly Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the carrier frame assembly.
4. Remove the paper load door and manual insert tray.
5. Remove the two screws securing the right side frame to the
back plate. Slide the right side frame off the back plate . Note the
relationship of the parts.
4-20
4077-20X, 30X
Small Feed Roll Shaft, Rollers & Paper Flap Removal
1. Remove the front cover.
2. Remove the rear cover.
3. Remove the carrier frame assembly.
4. Spread the left and right side frames apart far enough to
remove the small feed roll shaft assembly.
Star Roller Removal
1. Remove the front cover.
2. Remove the four screws from the star roller assembly and
remove the assembly.
System Board Removal
1. Remove the front cover.
2. Unlock the four printhead cable connectors and disconnect the
printhead cables from the system board.
3. Disconnect the other cables from the system board.
4. Gently release the tension on the encoder strip by flexing the
encoder strip tensioner and remove the encoder strip from the
left side only.
5. Remove the three screws securing the system board to the
carrier frame and remove the system board. Note the routing of
the paper feed motor cable.
Note: The head to head and bidirectional printing alignments will be
reset to factory defaults. The user, through the Printer Control
program, is directed to perform these alignments. When reinstalling
the system board, it is easier to insert the printhead cables in the
four connectors prior to installing the board.
Repair Information 4-21
4077-20X, 30X
5. Connector Locations
System Board Connectors
Connector Locations 5-1
4077-20X, 30X
Connector Connector Names
J1
J2
J3
J4
J6
J9
J11
J12
S1
SW1
U56
Printhead Cable 1
Printhead Cable 2
Printhead Cable 3
Printhead Cable 4
Transport Motor
Parallel Port
Pow er Sup ply
Paper Feed Motor
EOF Sensor
Power Switch
Code Module
Encoder Card Connector
Connector Locations 5-2
4077-20X, 30X
6. Preventive Maintenance
This chapter contains the lubrication specifications. Follow these
recommendations to prevent problems and maintain optimum
performance.
Lubrication Specifications
Lubricate only when parts are replaced or as needed, not on a
scheduled basis. Use grease P/N 1329301 to lubricate the f ollowing:
•
All gear mounting studs.
•
The left and right ends of the large feed roller at the side frames.
•
Both ends of the sheet feeder pick roll shaft at the side frames.
•
The carrier to carrier frame engagement.
Note: Lubricate the carrier guide rod, and carrier guide rod
bearings.
Preventive Maintenance 6-1
4077-20X, 30X
7. Parts Catalog
How To Use This Parts Catalog
•
SIMILAR ASSEMBLIES: If two assemblies contain a majority of
identical parts, they are broken down on the same list. Common
parts are shown by one index number. Parts peculiar to one or
the other of the assemblies are listed separately and identified
by description.
•
NS: (Not Shown) in the Asm-Index column indicates that the
part is procurable but is not pictured in the illustration.
•
PP: in the parts descriptions column indicates the part is
available in the listed parts packet.
Parts Catalog 7-1
4077-20X, 30X
Assembly 1: Covers
7-2
4077-20X, 30X
AsmIndex
1 -1 13A1233 1 Base Asm includes, Gutter Pad, Feet
1 -1 13A1445 1 Base Asm includes, Gutter Pad, Feet
-1A 13A1234 1 Exit Tray and Extender (White)
-1A 13A1452 1 Exit Tray and Extender (Black)
-2 13A1220 1 Front Cover Asm, Access Cover,
-2 13A1439 1 Front Cover Asm, Access Cover, Button
-2 13A1528 1 Front Cover Asm, Access Cover, Button
-2 13A1326 1 Front Cover Asm, Access Cover, Button
-2 13A1258 1 Front Cover Asm, Access Cover, Button
-3 69G4118 1 Rear Cover
Part
Number
Units Description
(White)
(Black)
Button & LED Lens (4077-201)
& LED Lens (4077-202)
& LED Lens (4077-204)
& LED Lens (4077-203)
& LED Lens (4077-301)
-3 13A1444 1 Rear Cover (4077-202, 204)
-4 69G4119 1 Gutter Pad, Base Asm
NS 13A1257 1 Tray, Paper Storage (4077-301)
NS 13A1259 1 Garage Asm, Printhead (4077-301)
NS 7347935 1 Plain Carton Packaging B/M
Parts Catalog 7-3
4077-20X, 30X
Assembly 2: Frames
7-4
4077-20X, 30X
AsmIndex
2 -1 13A1235 1 Left Side Frame Sub-Asm (White)
2 -1 13A1449 1 Left Side Frame Sub-Asm (Black)
-2 13A1279 1 Mid Frame Asm
-3 13A1236 1 Right Side Frame (White)
-3 13A1446 1 Right Side Frame (Black)
-4 69G4122 1 Carrier Frame
-5 69G4188 4 Screw, Frame Mounting (PP)
Part
Number
Units Description
without Gears
Also order gears B/M 69G4127
without Gears
Also order gears B/M 69G4127
Parts Catalog 7-5
4077-20X, 30X
Assembly 3: Paper Feed
7-6
4077-20X, 30X
AsmIndex
3 -1 13A1192 1 Paper Guide Asm includes EOF
-2 13A1280 1 Small Feed Roll Shaft Roll B/M
-3 13A1279 1 Star Roller Asm
-4 70G0575 1 Large Feed Roll Asm (includes
-5 13A1221 1 Paper Feed Motor, Motor Gear,
-6 69G4127 1 Gears B/M
-7 69G4398 1 Feed Arm Asm
-8 69G4188 2 C-Clip (PP)
-9 69G4188 3 Spring, Small Feed Roll (PP)
-10 69G4188 2 Screw, Paper Feed Motor
Part
Number
Units Description
Flag, Spring
Also order 13A1280
and Paper Flap
(part of Mid Frame)
Small Compound Idler Gear)
Toroid
Mounting (PP)
-11 70G0577 1 Exit Roller
-12 70G0579 1 Exit Drive Belt
Parts Catalog 7-7
4077-20X, 30X
Assembly 4: Electronics
7-8
4077-20X, 30X
AsmIndex
4 -1 13A1222 1 System Board, W/O Code Module
-2 13A1237 1 Power Supply with Ground Plane,
-3 1339526
Part
Number
1342514
1339520
1339520
1342514
1342514
1342534
1339526
1342534
1342514
1342514
1339525
1342514
1339519
1342514
1339520
1339520
1339520
1342514
1342514
1339521
1339524
70G0496
1342514
1339520
1342514
1339520
1342514
1342536
1342514
1339517
1339523
1339520
1339520
1339522
1339519
1342536
1342514
Units Description
Insulator, Cover (Universal)
1 Power Cord, U.S.
Power Cord, Argentina
Power Cord, Austria
Power Cord, Belgium
Power Cord, Bolivia
Power Cord, Brazil (LV)
Power Cord, Brazil (HV)
Power Cord, Canada
Power Cord, Chile
Power Cord, Columbia
Power Cord, Costa Rica
Power Cord, Denmark
Power Cord, Ecuador
Power Cord, Egypt
Power Cord, El Salvador
Power Cord, Finland
Power Cord, France
Power Cord, Germany
Power Cord, Guatemala
Power Cord, Honduras
Power Cord, Israel
Power Cord, Italy
Power Cord, Japan
Power Cord, Mexico
Power Cord, Netherlands
Power Cord, Nicaragua
Power Cord, Norway
Power Cord, Panama
Power Cord, Paraguay
Power Cord, Peru
Power Cord, Saudi Arabia
Power Cord, South Africa
Power Cord, Spain
Power Cord, Sweden
Power Cord, Switzerland
Power Cord, United Kingdom
Power Cord, Uruguay
Power Cord, Venezuela
Parts Catalog 7-9
4077-20X, 30X
Assembly 4: Electronics (continued)
7-10
4077-20X, 30X
AsmIndex
4 -4 13A1223 1 Code Module
-5 69G4188 5 Screw, System Board Mounting
Part
Number
Units Description
(PP)
Parts Catalog 7-11
4077-20X, 30X
Assembly 5: Carrier
7-12
4077-20X, 30X
AsmIndex
5 -1 69G4154 1 Printhead Carrier B/M
-2 69G4155 1 Printhead Cable (Folded)
-3 1367109 1 Rubber Backer
-4 69G4157 1 Carrier Guide Rod
-5 69G4156 1 Encoder Card Asm
-6 69G4188 1 Screw, Encoder Card Mounting
-7 69G4188 1 Retainer Right, Carrier Guide Rod
-8 69G4188 1 E-Ring, Carrier Guide Rod (PP)
-9 13A1225 1 Printhead Cartridge Interlock Key
Part
Number
Units Description
(PP)
(PP)
B/M
Parts Catalog 7-13
4077-20X, 30X
Assembly 6: Carrier Transport
7-14
4077-20X, 30X
AsmIndex
6 -1 69G4158 1 Carrier Transport Motor & Pulley
-2 69G4159 1 Carrier Belt
-2 13B0215 1 Carrier Belt (New Style)
-3 69G4403 1 Encoder Strip
-4 69G4163 1 Idler Pulley Tension Asm
-5 69G4188 2 Screw, Carrier Transport Motor
-6 69G4188 1 Tensioner, Encoder Strip (PP)
Part
Number
Units Description
Mounting (PP)
Parts Catalog 7-15
4077-20X, 30X
Assembly 7: Sheet Feeder
7-16
4077-20X, 30X
AsmIndex
7 -1 13A1227 1 Right Edge Guide & Width Adjust
7 -1 13A1442 1 Right Edge Guide & Width Adjust
-2 13A1228 1 Left Edge Guide (White)
-2 13A1443 1 Left Edge Guide (Black)
-3 69G4131 1 Upper Paper Support (White)
-3 13A1451 1 Upper Paper Support (Black)
-4 13A1229 1 Pick Roll & Paper Load Shaft B/M
-5 1367463 2 Pick Roll Hub Asm
-6 1367019 1 Envelope Buckler B/M, Left & Right
-7 69G4169 1 Back (White)
-7 13A1448 1 Back (Black)
-8 13A1226 1 Paper Load Door (White)
-8 13A1440 1 Paper Load Door (Black)
Part
Number
Units Description
Strip (White)
Strip (Black)
-9 69G4165 1 Manual Insert Tray (White)
-9 13A1447 1 Manual Insert Tray (Black)
-10 69G4188 1 E-Ring (PP)
-11 69G4188 4 Screw, Side Frame (PP)
-12 69G4188 1 Spring, Left Paper Load (PP)
-13 69G4188 1 Spring, Right Paper Load (PP)
Parts Catalog 7-17
4077-20X, 30X
Assembly 8: Maintenance Station
7-18
3
2
1
4077-20X, 30X
AsmIndex
8 -1 13A1231 1 Maintenance Station Asm
-2 1367389 1 Wiper and Cap B/M (one of each)
-3 69G4188 1 Screw, Maintenance Station
Part
number
Units Description
Mounting (PP)
Parts Catalog 7-19
4077-20X, 30X
Index
A
Abbreviations
Adjustments
Assemblies
1 Covers
2 Frames
3 Paper Feed
4 Electronics
5 Carrier
6 Carrier Transport
7 Sheet Feeder
8 Maintenance Station
C
Connector Locations
Connectors
System Board
D
Diagnostic Aids
Diagnostic Information
E
Error Indicator Table
ESD-Sensitive Parts
G
General Information
L
Lubrication Specifications
M
Maintenance Approach
4-2
7-12
1-2
7-2
7-4
3-1
7-6
7-8
5-1
7-16
5-1
2-2
4-1
1-1
2-1
7-14
1-1
6-1
7-18
3
P
Parts Catalog
Plastic Latches
POST
Sequence
Symptom Table
Power Consumption
Preventive Maintenance
Problems
Carrier Transport
Communications
Maintenance Station
Paper Feed
Power
Print Quality
2-5
7-1
4-2
2-2
2-5
2-5
2-3
1-1
R
Removals
Base Assembly
Carrier Belt
Carrier Frame
Carrier Transport Motor
Code Module
Edge Guide Asm
Encoder Card
Encoder Strip
Envelope Bucklers
EOF Flag Asm
Exit Drive Belt
Exit Roller
Feed Arm Assembly
Front Cover
Gutter Pad
Inside Idler Gears
Large Feed Roll
Large Outside Gear
Left Side Frame
Maintenance Caps
Maintenance Station
Maintenance Wipers
Manual Insert Tray
Mid Frame Assembly
4-7
4-3
4-8
4-8
4-6
4-6
4-4
4-6
4-14
4-7
4-3
4-10
4-12
2-4
2-4
4-6
4-16
4-9
4-13
4-13
6-1
2-4
4-7
4-11
4-13
4-13
4-13
4-5
X-1
4077-20X, 30X
Removals (continued)
Paper Deflector 4-17
Paper Feed Motor
Paper Flap
Paper Guide
Paper Load Door
Paper Load Shaft
Pick Roll Hub
Pick Roll Shaft
Power Supply
Printhead Cable
Printhead Carrier
Printhead Cradle
Printhead Rubber Backer
Rear Cover
Right Side Frame
Small Feed Roll Shaft
Small Feed Rollers
Star Roller
System Board
Repair Information
4-21
4-21
4-14
4-20
4-16
4-16
4-16
4-21
4-1
4-17
4-17
S
Safety Information
Service Checks
Envelope Feed
First Print Line
Maintenance Station
Paper Feed
Paper Path
Parallel Port
Power
Print Quality
Transport
Start
2-1
Symptom Table (POST)
Symptom Tables
2-12
2-15
2-8
2-11
vii
2-12
2-13
2-4
2-6
2-6
4-14
4-16
4-6
4-19
4-20
4-21
2-3
2-7
4-21
4-19
T
Tests
Encoder Sensor
Parallel Port
Print NVRAM Contents
Tools
Test Page
1-2
3-5
3-1
3-3
3-4
X-2
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