Lexmark Optra Color 40, 4092-010 Service Manual
Lexmark Optra™ Color 40
• Table of Contents
• Start Diagnostics
• Safety and Notices
• Trademarks
4092-010
• Index
• Manuals Menu
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
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iii
4092-010
First Edition (May,1998)
The following paragraph does not apply to any country where such provisions are
inconsistent with local law: LEXMARK INTERNATIONAL, INC. PROVIDES 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 express or implied warranties in certain transactions, therefore, 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. Improvements or changes in the products or the programs described may be
made at any time.
A form for reader’s comments is provided at the back of this publication. If the form has
been removed, comments may be addressed to Lexmark International, Inc., Department
D22/035-3, 740 New Circle Road N.W., Lexington, Kentucky 40550, U.S.A. Lexmark may
use or distribute any of the information you supply in any way it believes appropriate
without incurring any obligation to you. You can purchase additional copies of publications
related to this product by calling 1-800-553-9727. In other countries, contact your point of
purchase.
Lexmark and Optra are trademarks of Lexmark International, Inc., registered in the United
States and/or other countries.
Other trademarks are the property of their respective owners.
© Copyright Lexmark International, Inc. 1998.
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 a nd Computer Software clause at
DFARS252.227-7013 and in applicable FAR provisions: Lexmark International, Inc.,
Lexington, KY 40550.
4092-010
Table of Contents
GeneralInformation....................................1-1
Operator Panel .........................................1-1
Buttons.............................................1-1
Lights ..............................................1-2
Power Consumption .....................................1-2
Voltage, Ground, and Continuity Readings ...................1-3
Maintenance Approach ..................................1-4
Abbreviations ........................................1-4
Unique Tools Required For Service .......................1-4
DiagnosticInformation .................................2-1
Start .................................................2-1
Error Indicator Table ..................................2-2
Power-On Self Test (POST) Sequence ....................2-4
POST Symptom Table.................................2-4
Symptom Tables .....................................2-5
Service Checks ........................................2-7
Controller Board Service Note ...........................2-7
Envelope Feed Service Check...........................2-7
First Print Line Service Check ...........................2-7
Maintenance Station Service Check ......................2-8
Options Service Check.................................2-9
DRAM Memory Option SIMM............................2-9
Paper Feed Service Check .............................2-9
Paper Path Service Check.............................2-11
Parallel Port Service Check ............................2-12
Power Service Check.................................2-12
Print Quality Service Check ............................2-14
Transport Service Check ..............................2-17
DiagnosticAids .......................................3-1
Print Test Page .........................................3-2
Print Engine NVRAM Contents ............................3-2
EOF Sensor Test .......................................3-3
Encoder Sensor Test ....................................3-3
Parallel Port Wrap Test ..................................3-4
Hex Trace .............................................3-4
Clear Error Log .........................................3-4
ROM Test .............................................3-4
DRAM Test ............................................3-5
v
4092-010
Deactivate/Activate Demo Mode ............................3-5
RepairInformation......................................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
Controller Board Removal...............................4-6
Engine Board Code Module Removal......................4-6
Edge Guide Asm and Paper Load Shaft Removal ............4-6
Encoder Card Removal.................................4-6
Encoder Strip Removal .................................4-7
Engine Board Removal .................................4-7
Exit Drive Belt Removal.................................4-8
Exit Roller Removal....................................4-8
Feed Arm Assembly Removal............................4-8
Front Cover Removal ..................................4-9
Gutter Pad Removal ...................................4-9
Inside Idler Gears Removal.............................4-10
Large Feed Roll Removal ..............................4-11
Large Outside Gear Removal ...........................4-12
Left Side Frame Assembly Removal ......................4-13
Maintenance Station Assembly Removal ..................4-14
Maintenance Wipers and Caps Removal ..................4-14
Manual Insert Tray Removal ............................4-14
Mid Frame Assembly Removal ..........................4-14
Paper Feed Motor Removal ............................4-15
Paper Guide and EOF Flag Assembly Removal .............4-15
Paper Load Door Removal .............................4-17
Pick Roll Shaft, Hub and Envelope Bucklers Removal ........4-17
Power Supply R emoval ................................4-17
Printhead Cable, Cradle & Paper Deflector Removal .........4-18
Printhead Carrier Assembly Removal .....................4-20
Printhead Rubber Backer Removal.......................4-20
Rear Cover Removal..................................4-21
Right Side Frame Assembly Removal.....................4-21
Small Feed Roll Shaft, Rollers & Paper Flap Removal ........4-22
Star Roller Removal ..................................4-22
ConnectorLocations....................................5-1
vi Service Manual
4092-010
Engine Board Connectors ................................5-1
Controller Board Connectors ..............................5-2
Encoder Card Connector .................................5-3
Preventive Maintenance ................................6-1
Lubrication Specifications .................................6-1
PartsCatalog .........................................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
*Controller Board Service Note ..........................7-9
Assembly 4: Electronics (continued) .......................7-10
Assembly 5: Carrier ....................................7-12
Assembly 6: Carrier Transport ............................7-14
Assembly 7: Sheet Feeder ...............................7-16
Assembly 8: Maintenance Station .........................7-18
vii
4092-010
viii Service Manual
4092-010
Safety Information
• This product is designed, tested and approved to meet strict
global safety standards with the use of specific Lexmark
components. The safety features of some parts may not always
be obvious. Lexmark is not responsible for the use of other
replacement parts.
• 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 r i sk of electric shock and personal
injury during disassembly and servicing of this product.
Professional service personnel should understand this and take
necessary precautions.
Consignes de Sécurité
• Ce produit a été conçu, testé et approuvé pour respecter les
normes strictes de sécurité globale lors de l'utilisation de
composants Lexmark spécifiques. Les caractéristiques de
sécurité de certains éléments ne sont pas toujours évidentes.
Lexmark ne peut être tenu responsable de l'utilisation d'autres
pièces de rechange.
• 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.
Safety Information ix
4092-010
Norme di sicurezza
• Ilprodotto è stato progettato,testato e approvato in conformità a
severi standard di sicurezza e per l’utilizzo con componenti
Lexmark specifici. Le caratteristiche di sicurezza di alcune
parti non sempre sono di immediata comprensione. Lexmark
non è responsabile per l’utilizzo di parti di ricambio di altri
produttori.
• Le informazioni riguardanti la manutenzione di questo prodotto
sono indirizzate soltanto al personale di assistenza autorizzato.
• Durante lo smontaggio e la manutenzione di questo prodotto, il
rischio di subire scosse elettriche e danni alla persona è più
elevato. Il personale di assistenza autorizzato, deve,quindi,
adottare le precauzioni necessarie.
Sicherheitshinweise
• Dieses Produkt und die zugehörigen Komponenten wurden
entworfen und getestet, um beim Einsatz die weltweit gültigen
Sicherheitsanforderungen zu erfüllen. Die sicherheitsrelevanten
Funktionen der Bauteile und Optionen sind nicht immer
offensichtlich. Sofern Teile eingesetzt werden, die nicht von
Lexmark sind, wird von Lexmark keinerlei Verantwortung oder
Haftung für dieses Produkt übernommen.
• Die Wartungsinformationen für dieses Produkt sind
ausschließlich für die Verwendung durch einen
Wartungsfachmann bestimmt.
• Während des Auseinandernehmens und der Wartung des
Geräts besteht ein zusätzliches Risiko eines elektrischen
Schlags und körperlicher Verletzung. Das zuständige
Fachpersonal sollte entsprechende Vorsichtsmaßnahmen
treffen.
x 4092 Service Manual
4092-010
Pautas de Seguridad
• Este producto se ha diseñado, verificado y aprobado para
cumplir los más estrictos estándares de seguridad global
usando los componentes específicos de Lexmark. Puede que
las características de seguridad de algunas piezas no sean
siempre evidentes.Lexmark no se hace responsable del uso de
otras piezas de recambio.
• La información sobre el mantenimiento de este producto está
dirigida exclusivamente al personal cualificado de
mantenimiento.
• Existe mayor riesgo de descarga eléctrica y de daños
personales durante el desmontaje y la reparación de la
máquina. El personal cualificado debe ser consciente de este
peligro y tomar las precauciones necesarias.
Informações de Segurança
• Este produto foi concebido, testado e aprovado para satisfazer
os padrões globais de segurança na utilização de componentes
específicos da Lexmark. As funções de segurança de alguns
dos componentes podem não ser sempre óbvias. A Lexmark
não é responsável pela utilização de outros componentes de
substituição.
• 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.
Safety Information xi
4092-010
Informació de Seguretat
• Aquest producte està dissenyat, comprovat i aprovat per tal
d'acomplir les estrictes normes de seguretat globals amb la
utililització de components específics de Lexmark. Les
característiques de seguretat d'algunes peces pot ser que no
sempre siguin òbvies. Lexmark no es responsabilitza de l'us
d'altres peces de recanvi.
• La informació pel manteniment d’aquest producte està
orientada exclusivament a professionals i no està destinada a
ningú que no ho sigui.
• El risc de xoc elèctr ic i de danys personals pot augmentar
durant el procés de desmuntatge i de servei d’aquest producte.
El personal professional ha d’estar-ne assabentat i prendre les
mesures convenients.
xii 4092 Service Manual
4092-010
Safety Information xiii
4092-010
xiv 4092 Service Manual
4092-010
1. General Information
The Lexmark Optra™ Color 40 (Machine Type4092-010) printer is a
high quality color inkjet printer designed to be attached to a
computer network. The print cartridges contain single-unit customer-
replaceable supply items. Dual printheads provide color and true
black printing without changing printheads. The black cartridge has
a total of 208 nozzles and installs on the left. The color cartridge has
a total of 192 nozzles and installs on the right. The printer is capable
of printing in two directions from either cartridge.
Operator Panel
Buttons
Left =
Reset
X Cancel a print job
X Clear the print buffer
There is no power button.
Right =
Continue
X Eject paper from printer
X Continue printing after fixing an error
Used to
General Information 1-1
4092-010
Lights
Left =
Power
On Off Poweris on
On Blinking Printer is busy
Blinks *S Blinks *S Error condition or printer in demo mode
Blinks
Twice *S
Blinks *S Blinks *S While continuing to print - No photo cartridge
Blinks Off Error condition in engine board
Blinks On Error condition in controller board
Right =
Busy
Blinks
Twice *S
Conditions
“Deactivate/Activate Demo Mode” on page 3-5
Memory full condition
installed or a resolution reduction has occurred.
*S = Simultaneously
Power Consumption
• 11.1 Watts - Power off and power to the printer
• 12 Watts - Idle Mode (power on - not printing)
• 24 Watts - Printing
1-2 Service Manual
4092-010
Voltage, Ground, and Continuity Readings
Voltage Readings
All dc voltages must be within +5% through -10% of the values to be
considered correct. Unless stated otherwise, all connectors should
be connected normally when a voltage measurement is done.
When a “Line Voltage” measurement is done, the voltage on United
States and Canada machines should be between 100 V ac and 127
V ac. On World Trade machines, the voltage is according to each
country’s specification.
Ground Checks
To check for a correct ground, measure the voltage between the
ground and a known good voltage source. The voltage
measurement must be the same as the source voltage to consider
the ground is correct. Continuity measurements may be used to
check grounds, however, be sure to measure to a known good
ground using the lowest ohms scale and check for zero ohms.
Note: Always unplug the power cord before doing any continuity
measurement.
Continuity Readings
When measuring continuity, be sure no back circuits affect the
measurement. If necessary, unplug connectors to remove any back
circuits. Zero the ohm range on the lowest scale (X1). An open
circuit will read infinity. A circuit with correct continuity will read zero
ohms.
General Information 1-3
4092-010
Maintenance Approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the error indicator table,
symptom table,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, through the MarkVision cartridge
utility, to perform the head to head and bidirectional alignment
adjustments after replacing a print cartridge.
After you complete the repair, perform tests as needed to verify the
repair.
Abbreviations
CE Customer Engineer
CSU Customer Setup
EOF End of Forms
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
1-4 Service Manual
4092-010
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.
The printer also logs the last error. If you think it may have an
intermittent error, or the error indicator lights have been cleared, you
canretrievetheerror:
1. Run the “Print Engine NVRAM Contents” on page 3-2.The
last error appears at the bottom of the page.
2. Run “Clear Error Log” on page 3-4 to clear the error (the error
may not be the result of a current error).
3. Run the “Print Test Page”on page 3-2. If no error appears, go
to “Power-On Self Test (POST) Sequence” on page 2-4.
Diagnostic Information 2-1
4092-010
Error Indicator Table
Error
Service
Error
900 Nothing Continuously ON Replacethe Controller
902 65, 66,79
908 83 2 OFF Replace the Engine
910 81 3 OFF Go to the “Transport
930 92 4 OFF Go to the “Print
931 89 5 OFF Go to the “Transport
939 Nothing 2
Code in
Engine
NVRAM
or 127
thru 223
Number of
Power Light
Blinks
Continuously OFF Replace the Engine
or
Power Light is
Off and Busy
Light Blinks
Busy
Light
ON The Controller Board
Action
Board.
Code Module or the
Engine Board.
Code Module or the
Engine Board.
Service Check” on
page 2-17
Quality Service
Check” on page 2-14
Service Check” on
page 2-17
and the Engine Board
are not
communicating with
each other.
The Controller Board,
Engine Board or Flex
Cable are defective.
Check the flex cable
connection at both
boards and a secure
ground. If no problem
is found, replace the
FRUs in the following
order:
2-2 Service Manual
• Controller Board
• Engine Board
•FlexCable
4092-010
Error
Service
Error
941 Nothing 3 ON Code ROM failed the
941 Nothing 4 ON Font ROM checksum
943 Nothing 5 ON Controller code and
945 Nothing 6 ON ASIC failure. Replace
947 Nothing 3 fast, 3 slow,
953, 954 Nothing 8 ON Controller Board
960, 961 Nothing 9* ON Replace the DRAM
Code in
Engine
NVRAM
Number of
Power Light
Blinks
pause. Repeat
Busy
Light
OFF Replace the Engine
Action
CRC Check. Replace
the Controller Board.
failure. Replace the
Controller Board.
Font ROM are
incompatible.Replace
the Controller Board.
the Controller Board.
Board.
NVRAM failure.
ReplacetheController
Board.
SIMM on the
Controller Board.
*DRAM is needed to communicate to the engine and display light
patterns. There may be instances where lights do not accurately
display the correct pattern.
Diagnostic Information 2-3
4092-010
Power-On Self Test (POST) Sequence
When you plug the printer into a power source, it performs a POST.
The POST operation goes through the following steps:
1. DRAM and ROM memories are checked.
2. The lines between the Controller Board and the Engine Board
are checked.
3. The carrier moves to the left, then to the right over the maintenance station and seals the printheads.
4. The paper feed gears turn.
5. All motors stop, the busy light blinks and turns off and the power
light stays on.
If your pr inter completes POST with no errors, go to the “Symptom
Tables” on page 2-5, locate the symptom and take the indicated
action.
If your pr inter does not complete POST, locate the symptom in the
following table and take the indicated action.
POST Symptom Table
Symptom Action
No Powerlight
and no motors
run
Feeds paper Go to the
Go to the
page 2-7
Paper feed
gears do not
turn
Carrier doesn’t
move
Carrier slams
side frame
Go to the
page 2-9
Go to the
page 2-17
Go to the
page 2-17
2-4 Service Manual
“PowerServiceCheck”onpage2-12.
“First Print Line Service Check” on
.
“Paper Feed Service Check” on
.
“Transport Service Check” on
.
“Transport Service Check” on
.
4092-010
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
Check” on page 2-17
Communications Problems
Symptom Action
Printer not communicating with
host computer
Go to the
Check” on page 2-12
Maintenance Station Problems
Symptom Action
• Fails to cap the printhead
• Fails to clean the printhead
Go to the
Service Check” o n page 2-8
Operator Panel Problems
Symptom Action
“Transport Service
.
“Parallel Port Service
.
“Maintenance Station
.
Buttons do not operate Replace the engine board.
Lights do not come on Replace the engine board.
Diagnostic Information 2-5
4092-010
Paper Feed Problems
Symptom Action
Paper fails to stop at first print line Go to the
ServiceCheck”onpage2-7
• Fails to pick paper
• Picks more than one sheet of
paper
• Pickspaper but fails to feed
• Paper jams
• Paper fails to exit
• Noisy paper feed
Envelopes fail to feed Go to the
Go to the
Check” on page 2-9
ServiceCheck”onpage2-7
Paper skews Go to the
Check” on page 2-11
Power Problems
Symptom Action
No power in printer, no Power
light, no motors
Go to the
Check” on page 2-12
Print Quality Problems
“First Print Line
.
“Paper Feed Service
.
“Envelope Feed
.
“Paper Path Service
.
“Power Service
.
Symptom Action
• Voids in characters
• Light print
• Prints off the page
•Fuzzyprint
• Carrier moves but does not
print
• Printhead drying prematurely
• Vertical alignment off
• Excessive ink flow (Flooding)
• Ink smearing
• Vertical streaks on paper
• Print lines crowded
Go to the
Check” on page 2-14
Go to the
Check” on page 2-9
2-6 Service Manual
“Print Quality Service
.
“Paper Feed Service
.
4092-010
Service Checks
Controller Board Service Note
Earlier level printers may have a ROM Code SIMM plugged into the
Controller Board. Later levelprinters will have the Code soldered on
the Controller Board in position U11. The Controller Board FRU will
contain the later level board with the soldered on code. The ROM
Code SIMM is not available as a FRU.
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
on page 2-9
“Paper Feed Service Check”
.
First Print Line Service Check
FRU Action
1 EOF Flag Check the flag for binds or damage.
2 EOF Sensor Check the sensor for dirt.
3 Engine Board Perform the “EOF Sensor Test” on page 3-3
to check the EOF sensor on the engine board.
4 Feed Arm
Assembly
Check all parts of the feed arm assembly for
binds, wear,or damage.
Diagnostic Information 2-7
4092-010
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.
2-8 Service Manual
4092-010
Options Service Check
DRAM Memory Option SIMM
There is DRAM resident on the Controller Board and DRAM on the
Memory Option SIMM. Check to see that the Memory Option SIMM
is correctly installed and not borken or damaged. Run the “DRAM
Test” on page 3-5. If the test fails, replace the Controller Board. If
the test runs successfully, replace the DRAM Memory Option SIMM.
Paper Feed Service Check
If your printer does not have paper jam problems, continue with the
service check. If your pr inter 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.
Perform the “Print Test Page” on page 3-2. Look at the paper test
result. A number greater than 2500 indicates binds or high friction in
the pick or feed mechanism.
Check for things that would slow the movement of the paper
between the time the paper is picked and the time the paper
activates the EOF sensor.
FRU Action
1 Engine Board With J5 disconnected and power on, check for
+30 V dc between J5-1 and ground, and between
J5-3 and ground on the engine 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 engine
board.
Diagnostic Information 2-9
4092-010
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
engine board
• A bind in the paper feed mechanism
With the paper feed motor cable disconnected
from the engine board, check for 5 to 10 ohms
between pin 1 and 4 on the motor cable.
If the reading is incorrect, replace the motor.
Checkfor motor pins shorted to the motor housing.
If you find a shorted pin, replace the motor. If the
failure remains, replace the engine 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 engine 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
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.
4 Feed Arm
Assembly
5 Paper Path Perform the
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 fails to drop
off the notch, check the feed arm assembly for
binds, and worn or broken parts.
“Paper Path Service Check” on
page 2-11
,startingatStep1.
2-10 Service Manual
4092-010
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 Exit Roller
Star Rollers
Exit Drive Belt
4 Sheet Feeder Check the following for wear or damage:
5EOFFlag&
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
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