Lexmark 7000 schematic
7000 Color Jetprinter™
7200, 7200V Color Jetprinter
• Table of Contents
• Start Diagnostics
• Safety and Notices
4092-00X
• Trademarks
•Index
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
4092
First Edition (November 1997)
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.
Comments may be addressed to Lexmark International, Inc., Department
D22A/035-3, 740 New Circle Road, Lexington, Kentucky 40550, U.S.A.
Lexmark mayuse or distribute any of the information you supply in any way
it believes appropriate without incurring any obligation to you.If your printer
has broken or missing parts, or if you are missing publications, call 1-8004LEXBMP. In other countries, contact your point of purchase. You can
obtain additional copies of publications related to this product by calling 1800-553-9727.
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. 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.
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Contents 1
Preface ..............................................vii
GeneralInformation ..................................1-1
Operator Panel. . . ................................. 1-1
Resolution and Print Speed . . ........................ 1-1
PowerConsumption................................ 1-2
Maintenance Approach ............................. 1-2
Abbreviations.................................. 1-3
UniqueToolsRequiredForService................ 1-3
DiagnosticInformation ................................2-1
Start ........................................... 2-1
ErrorIndicatorTable............................ 2-2
Power-On Self Test (POST) Sequence.............. 2-2
POSTSymptomTable........................... 2-3
SymptomTables............................... 2-4
ServiceChecks................................... 2-6
EnvelopeFeedServiceCheck .................... 2-6
FirstPrintLineServiceCheck..................... 2-6
Maintenance Station Service Check . ............... 2-7
Paper Feed Service Check ....................... 2-8
Paper Path Service Check ...................... 2-10
ParallelPortServiceCheck...................... 2-11
PowerServiceCheck .......................... 2-11
PrintQualityServiceCheck...................... 2-12
TransportServiceCheck........................ 2-15
DiagnosticAids ......................................3-1
EncoderSensorTest............................... 3-2
InitializeErrorLog................................. 3-3
EndofForms(EOF)Test............................ 3-4
ParallelPortTest.................................. 3-5
PrintNVRAMContents ............................. 3-6
TestPage........................................ 3-7
RepairInformation....................................4-1
Handling ESD-Sensitive Parts........................ 4-1
Adjustments...................................... 4-2
RemovalProcedures............................... 4-2
ReleasingPlasticLatches........................ 4-2
BaseAssemblyRemoval......................... 4-3
CarrierBeltRemoval............................ 4-3
CarrierFrameAssemblyRemoval ................. 4-4
CarrierTransportMotorRemoval.................. 4-5
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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
ExitDriveBeltRemoval.......................... 4-7
ExitRollerRemoval............................. 4-7
FeedArmAssemblyRemoval..................... 4-7
FrontCoverRemoval............................ 4-8
GutterPadRemoval............................. 4-8
InsideIdlerGearsRemoval....................... 4-9
LargeFeedRollRemoval........................ 4-10
LargeOutsideGearRemoval..................... 4-11
LeftSideFrameAssemblyRemoval............... 4-12
MaintenanceStationAssemblyRemoval............ 4-13
MaintenanceWipersandCapsRemoval............ 4-13
Manual Insert Tray Removal ..................... 4-13
MidFrameAssemblyRemoval ................... 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 Shaft, Hub 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
RearCoverRemoval........................... 4-20
RightSideFrameAssemblyRemoval.............. 4-20
Small Feed Roll Shaft, Rollers & Paper Flap Removal . 4-21
StarRollerRemoval............................ 4-21
SystemBoardRemoval......................... 4-21
ConnectorLocations ..................................5-1
System Board Connectors . .......................... 5-1
EncoderCardConnector........................... 5-2
PreventiveMaintenance ...............................6-1
Lubrication Specifications. . .......................... 6-1
PartsCatalog ........................................7-1
HowToUseThisPartsCatalog....................... 7-1
Assembly1:Covers................................ 7-2
Assembly2:Frames................................ 7-4
Assembly 3: Paper Feed . . .......................... 7-6
Assembly4:Electronics............................. 7-8
Assembly5:Carrier ............................... 7-12
Assembly6:CarrierTransport....................... 7-14
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Assembly 7: Sheet Feeder. . . ....................... 7-16
Assembly 8: Maintenance Station .................... 7-18
Index ...............................................X-1
vi
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Preface 2
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 failingfield 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. ConnectorLocations uses illustrations 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.
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 risk of electric shock and personal
injury during disassembly and servicing of this product.
Professional service personnel should understand this and take
necessary precautions.
Preface vii
4092
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.
Norme di sicurezza
Il prodotto 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.
viii
4092
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.
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.
Preface ix
4092
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.
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 elèctric 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.
x
4092
Preface xi
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1. General Information
The Lexmark Color JetprinterTMSeries 7000, 7200 & 7200V
(Machine Type 4092) printers are personal, near laser-quality inkjet
printers. The print cartridges contain single-unit customerreplaceable 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. These printers are
capable of pr inting in two directions from either cartridge.
Operator Panel
Buttons Lights
Left Button - Power On/Off Left Light
• Steady - Power On
• Blinking - Printer Error
Right Button - Paper Feed
Clears a paper jam or loads paper
when there is a paper out
condition.
Right Light
• Steady - Busy
• Blinking - Paper Out/Jam
Alternating Blinking Lights:
Printheads are in the load position or
printheads are installed incorrectly.
Resolution and Print Speed
Color Black
600 X 600 Letter Quality
1200 X1200 Ultra High Quality
1.4 page/minute Normal Quality
0.9 page/minute High Quality
600 X 600 Letter Quality
1200 X 1200 Ultra High Quality
3 page/minute Letter Quality
6.5 page/minute Draft
General Information 1-1
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Power Consumption
•
Less than 5 Watts - power off and power to the printer
• 10 Watts - Idle Mode (power on - not printing)
• 30 Watts - Printing (average)
• 40 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.
After you complete the repair, perform tests as needed to verify the
repair.
General Information 1-2
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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
1-3
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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 flashes of the Power
light. There is a pause between each series of flashes. If your printer
has an error indication, locate the series of flashes 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.
The printer also logs the last occurring error. If you think it may have
an intermittent error, or the error indicator lights have been cleared,
you can retrieve the error:
1. Run the “Print NVRAM Contents” on page 3-6. The last error
appears at the bottom of the page.
2. Run “Initialize Error Log” on page 3-3 to clear the error (the error
may not be the result of a current error).
3. Run the “Test Page” on page 3-7. If no error appears, go to
“Power-On Self Test (POST) Sequence” on page 2-2.
Diagnostic Information 2-1
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Error Indicator Table
Number
Error
Code
of
Power
Light
Flashes
Action
64
65
66 78
79
81
83
89
90
92
93
127
and
up
7
6
9
2
8
4
5
12
3
10
Replace the code module and/or system board and
printhead cable.
Replace the code module and/or system board and
printhead cable.
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.
Check the carrier and/or replace the system board.
Go to the “Power Service Check” on page 2-11.
Replace the code module and/or system board.
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.
2-2
4092
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 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 “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 2-11.
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
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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 2-11.
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.
Operator Panel Problems
Symptom Action
Paper feed button does not
operate
Busy light does not come on Replace the system board.
Replace the system board.
2-4
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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 2-10.
Power Problems
Symptom Action
No power in printer, no Power
light, no motors
Go to the “Power Service Check” on
page 2-11.
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
• Excessive ink flow (Flooding)
Go to the “Print Quality Service
Check” on page 2-12.
• Ink smearing
• Vertical streaks on paper
• Print lines crowded
Go to the
“Paper Feed Service
Check” on page 2-8
Diagnostic Information 2-5
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Service Checks
Envelope Feed Service Check
FRU Action
1 Envelope Guide Be sure the envelope guides have been tur ned
to the envelope load positions.
Be sure the envelope guides are against the
envelopes.
Perform the “PaperFeed 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 “End of Forms (EOF) Test” on
4 Feed Arm
Assembly
Check the flag for binds or damage.
Check the sensor for dirt.
page 3-4 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
4092
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
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Paper Feed Service Check
If your pr inter 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 ser vice 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 J5 disconnected and power on, check for
+30 V dc between J5-1 and ground, and between
J5-3 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
4092
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 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 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 feedmotor 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 “Paper Path Service Check” on page
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.
2-10, starting at Step 1.
Diagnostic Information 2-9
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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 posi-
tioned 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
3ExitRoller
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.
•PickRollers
• Envelope Bucklers
• All parts inside the left and right edge guides.
Check for binds or damage.
2-10
4092
Parallel Port Service Check
FRU Action
1 Parallel Port Run a test page to be sure the printer can print.
Run the “Parallel Port Test”on page 3-5.Ifthetest
fails, replace the system board.
Power Service Check
An Error Code 92 is caused by a shorted Print Cartridge, or a short
in the circuit to the Print Cartridges. If the problem is an Error Code
92, replace the Print Cartridges. Continue with this Service Check if
the symptom does not change.
FRU Action
1 Print Cartridges
Power Supply
3 Printhead Cable
Parallel Cable
Encoder Card
4 System Board If the symptom has not changed, replace the
If the problem is an Error Code 92, replace the
print cartridges.
Disconnect J9 from the system board and check
the following voltages on the power supply cable:
• J9-1toGND=+5Vdc
•J9-2toGND=+30Vdc
• J9-4toGND=+11.75Vdc
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.
Diagnostic Information 2-11
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Print Quality Service Check
FRU Action
1 Print Cartridge Be sure the printer contains good print cartridges.
2 Printhead Carrier
Assembly
Reseat the printhead cables in the system board
and check the following parts for wear or damage:
• Print Cartridge Latch
• Latch Spring
•Carrier
2-12
4092
FRU Action
3 System Board
Printhead Cable
Rubber Backer
Thermal Sensor
•Performthe“Test Page” on page 3-7. 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
mayneedtoremovethecablefromthecarrier
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.
• Refer to the test page. The temperature value in
Celsius, or the message “Thermal Sensor Not
Installed” is printed. If the thermal sensor is not
installed or malfunctioning, and the printer is
operating in a warm environment> 104F (40C),
excessive ink may flow f rom the cartridge. Be
sure the thermal sensor is connected to J7 on
the system board.
If the thermal sensor is connected and a
“Thermal Sensor Not Installed” message prints,
replace the thermal sensor.
Note: Printing slows to prevent overheating and
excessive ink flow, when the temperature is
above the normal operating range, or when
printing complex graphics.
The normal operating temperature range is
60Fto90F(16Cto32C).
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
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