Lexmark 4094 schematic

5000 and 5700 Color Jetprinter™

5770 Photo Jetprinter

• Table of Contents

• Start Diagnostics

• Safety and Notices

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• Trademarks

•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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Edition: October 2000

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 PARTICULARPURPOSE. 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 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.

Color Jetprinter is a trademark of Lexmark International, Inc. Other trademarks are the property of their respective owners.

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 DFARS252.227-7013 and in applicable FAR provisions: Lexmark International, Inc., Lexington, KY 40550.

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Table of Contents

Preface................................................ix

SafetyInformation .......................................x

GeneralInformation....................................1-1

Models ...............................................1-1

Lights and Buttons (5770) ................................1-2

Operator Panel and Menu (5770) ...........................1-3

Resolution and Print Speed . . . ............................1-5

PowerConsumption.....................................1-5

Maintenance Approach ..................................1-5

Abbreviations ..........................................1-6

‘DiagnosticInformation.................................2-1

Start..................................................2-1

ErrorIndicatorTable ..................................2-2

Power-On Self Test (POST) Sequence ...................2-3

Power-On Self Test (POST) Sequence (5770) ..............2-3

POSTSymptomTable ................................2-4

SymptomTables.....................................2-5

ServiceChecks ........................................2-8

FirstPrintLineServiceCheck...........................2-8

Maintenance Station Service Check . . . ...................2-9

Operator Panel Service Check (5770) . . ..................2-10

Operator Panel Display Service Check . ..................2-11

Paper Feed Service Check . ...........................2-12

Paper Path Service Check. . ...........................2-14

ParallelPortServiceCheck ...........................2-14

PhotoControllerServiceCheck ........................2-15

PowerServiceCheck ................................2-16

PrintQualityServiceCheck............................2-17

TransportServiceCheck..............................2-19

DiagnosticAids........................................3-1

Paper Pick Assembly Operation ............................3-1

EndofForms(EOF)Test .................................3-5

TestPage.............................................3-6

RepairInformation.....................................4-1

Handling ESD-Sensitive Parts. . ............................4-1

Adjustments ...........................................4-2

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Removal Procedures . ....................................4-2

ReleasingPlasticLatches ..............................4-2

BaseAssemblyRemoval ...............................4-3

CarrierBeltRemoval ..................................4-3

CarrierFrameAssemblyRemoval....................... 4-4

CarrierTransportMotorRemoval.........................4-4

Covers(Complete)Removal.............................4-5

Cover(Center)Removal................................4-6

EncoderCardRemoval................................ 4-6

EncoderStripRemoval.................................4-7

EOFFlagAssemblyandHolderRemoval ..................4-7

ExitDriveBeltRemoval................................ 4-8

ExitRollerRemoval ...................................4-8

GearPlateRemoval...................................4-9

GutterPadRemoval...................................4-9

LargeFeedRollRemoval...............................4-9

Maintenance Station Assembly Removal . .................4-10

Maintenance Wipers and Caps Removal . .................4-10

Mid-FrameAssemblyRemoval .........................4-10

Paper Feed Motor Removal . . ..........................4-11

Paper Pick Assembly Removal .........................4-11

PhotoControllerAssemblyRemoval .....................4-11

Printhead Cable and Cradle Removal . . . .................4-12

Printhead Carrier Assembly Removal . . . .................4-13

Printhead Rubber Backer Removal ......................4-14

Sheet Feeder Removal ...............................4-15

SmallFeedRollerRemoval ............................4-15

StarRollerRemoval ..................................4-15

SystemBoardRemoval............................... 4-15

ConnectorLocations....................................5-1

System Board Connectors (5000, 5700) ......................5-1

System Board Connectors (5770) .......................... 5-2

Photo Controller Board Connectors (5770) . . ................. 5-3

Preventive Maintenance .................................6-1

LubricationSpecifications .................................6-1

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PartsCatalog .........................................7-1

HowToUseThePartsCatalog ............................7-1

Covers ...............................................7-2

Frames ...............................................7-4

Paper Feed ............................................7-6

Electronics.............................................7-8

Carrier ..............................................7-10

CarrierTransport ......................................7-12

Sheet Feeder .........................................7-14

Maintenance Station ....................................7-16

PhotoController .......................................7-18

Index.................................................X-1

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vi Service Manual

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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 an error indicator table, symptom tables, and service checks used to isolate failing field replaceable units (FRUs).

3. Diagnostic Aids contains tests a nd 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 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.

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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.

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.

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Norme di sicurezza

• Il prodotto è stato progettato,testato e approvatoin 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.

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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.

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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.

Safety Information xi

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1. General Information

The Lexmark 5000 Color JetprinterTMand Lexmark 5700 Color Jetprinter are personal, near laser-quality inkjet 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 208 nozzles and the photo cartridge has a total of 192 nozzles. Either the black or the photo cartridge is installed on the right. The color c artridge has a total of 192 nozzles and installs on the left. The printer is capable of pr inting in two directions.

The Lexmark Photo Jetprinter 5770 printer is a general purpose printer that provides high quality text and photos. The 5770 can be used without a computer to print photos or connected to a computer. When connected to a computer the printer performs the same as a

5700.

Models

4094 - (S01, S02) 4093 - (S01, S02) 4093 - (S04)

General Information 1-1

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Lights and Buttons (5770)

The printer has two sets of lights and buttons:

• One set is located at the bottom left-hand corner of the printer,

on the operator panel.

• The other set is located at the top of the printer and includes the

Paper Status light and Paper Feed button.

Paper Status Light

Paper Feed Button

Operator Panel

1-2 Service Manual

Busy Light

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Operator Panel and Menu (5770)

Using the Operator Panel

The operator panel, on the front left side of the printer, has a 2-line by 16-character liquid crystal display (LCD), five buttons and one indicator light.

Operator Panel Display

Busy Light

Index

Select

Cancel

Print All

Operator Panel Busy Light

On A camera card is installed and the printer is ready to print. Off A camera card is not installed. Blinking The printer is busy.

General Information 1-3

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Operator Panel Buttons

Menu Used to scroll through the Menus. Select Used to select menu item - An asterisk (*) indicates an

item is selected.

Print Used to print a photo - Press and hold this button to

cancel print when the light is blinking.

Index Used to print an index page containing small images of all

photos on the camera card.

Print All Used to print all photos on the camera card.

Paper Status Light

Paper Feed Button

Paper Status Light (All Models)

Off Ready to print. On Solid Printing or feeding media through the printer. Blinking Out of paper or printer error

Paper Feed Button (All Models)

Clears a paper jam or loads paper when there is a paper out condition.

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Resolution and Print Speed

600 X 300 Draft 600 X 600 Letter Quality 1200 X 1200 Ultra High Quality

3 page/minute Draft 8 page/minute Draft

600 X 300 Draft 600 X 600 Letter Quality 1200 X 1200 Ultra High Quality

Power Consumption

• Less than 10 Watts - power off and power to the printer

• Less than 10 Watts - Idle Mode (power on - not printing)

• Less than 15 Watts - Printing (average)

• Less than 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.

After you complete the repair, perform tests as needed to verify the repair.

General Information 1-5

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Abbreviations

CSU Customer Setup EOF End of Forms ESD Electrostatic Discharge FRU Field Replaceable Unit HV High Voltage LED Light-Emitting Diode LV Low Voltage NVRAM Nonvolatile Random Access Memory OEM Original Equipment Manufacturer POST Power-On Self Test V ac Volts alternating current V dc Volts direct current

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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 Paper Status 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. Run the “Test Page” on page 3-6. If no error appears,go to “Power-OnSelf Test (POST) Sequence” on

page 2-3.

Diagnostic Information 2-1

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Error Indicator Table

3 4 5

6, 7

9, 10

81 Go to the “Transport Service Check” on page 2-18. 93 Replace the system board.

89 Go to the “Transport Service Check” on page 2-18. 90 Check the carrier for obstruction or binds. If no

obstruction or bind, replace the system board.

64-78 Replace the system board.

83 Replace the system board. 79 Replace the system board. 92 Replace the printhead. If problem remains, replace

the printhead cable.

95 The printer has received an invalid resolution setting

from the user’s application. Change the resolution in the application and turn the printer off and on to reset the condition. Refer to “Resolution and Print Speed”

on page 1-5.

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Power-On Self Test (POST) Sequence

Plug the printer in and check for a correct POST operation by observing the following:

1. The Paper Status light comes on and goes off.

2. The carrier moves over the maintenance station and seals the printheads.

3. The paper feed gears turn.

4. All motors stop.

If your printer 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.

Power-On Self Test (POST) Sequence (5770)

Plug the printer in and check for a correct post operation by observing the following:

1. The Paper Status light comes on and goes off.

2. The operator panel Busy light comes on and then goes off.

3. The operator panel displays two rows of diamonds.

4. The carrier moves over the maintenance station and seals the printheads.

5. The paper feed gears turn.

6. All motors stop, and Ready appears in the display.

Diagnostic Information 2-3

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POST Symptom Table

No motors run Go to the “Power Service Check” on page 2-15. Paper feed

gears do not turn

Carrier does not move

Carrier slams side frame

No Paper Status light

Blank Display (5770)

All Diamonds displayed after POST (5770)

Display difficult to read (5770)

Display OK, Buttons do not function (5770)

One or more buttons do not function (5770)

Go to the “Paper Feed Service Check” on page 2-11.

Go to the “Transport Service Check” on page 2-18.

Replace the system board.

Go to the “Operator Panel Display Service Check (5770)”

on page 2-10.

Go to the “Operator Panel Display Service Check (5770)”

on page 2-10

Go to the “Operator Panel Display Service Check (5770)”

on page 2-10.

Go to the “Operator Panel Button Service Check (5770)”

on page 2-10.

Go to the “Operator Panel Button Service Check (5770)”

on page 2-10.

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Symptom Tables

Locate the symptom in the following tables and take the appropriate action.

Carrier Transport Problems

• No carrier movement

• Slow carrier movement

• Carrier stops

• Carr ier slams side frame

Go to the “Transport Service Check”

on page 2-18.

Communications Problems

Printer not communicating with host computer (All models except 5770

5770 Go to the “Parallel Port Service Check

Check the parallel port connection (connector J7). If the connection is good, replace the system board

(5770)” on page 2-13.

Maintenance Station Problems

• Fails to cap the printhead

• Fails to clean the printhead

Go to the “Maintenance Station

ServiceCheck”onpage2-9.

Paper Feed Button and Paper Status Light Problems

Paper Feed button does not operate

Paper Status light does not comeonReplace the system board.

Replace the system board.

Diagnostic Information 2-5

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Photo Controller Problems (5770)

Prints from a PC but does not print from a flash card. Prints from a Flash Card but does not print from a PC.

Go to the “Photo Controller Service

Check (5770)” on page 2-14.

Paper Feed Problems

Paper fails to stop at first print line Go to the “First Print Line Service

Check” on page 2-8.

• 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

Paper skews Go to the “Paper Path Service Check”

Go to the “PaperFeedService Check”

on page 2-11.

on page 2-13.

Power Problems

No power in printer Go to the “Power Service Check” on

page 2-15.

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Print Quality Problems

• 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)

• Horizontal banding

• Ink smearing

• Vertical streaks on paper

• Print lines crowded

Go to the “Print Quality Service

Check” on page 2-16.

Go to the “PaperFeedService Check”

on page 2-11.

Diagnostic Information 2-7

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Service Checks

First Print Line Service Check

1End-of-Forms

Flag

2End-of-Forms

Sensor

3 System Board Perform the “End of Forms (EOF) Test” on

4 Paper Pick

Assembly

Check the flag for binds or damage.

Check the sensor for dirt.

page 3-5 to check the end-of-forms sensor on

the system board. Check the paper pick assembly for binds,

wear, or damage.

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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.

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.Thereshouldbenowipingactionofthe 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 2-9

+ 63 hidden pages