M750 Service Manual

Xerox DocuPrint M750/M760 Printer

Service Manual

701PXXXXXMay, 2000

This Service Manual contains information that appliesto the DocuPrint M750/M760 Inkjet Printer.

NOTICEAll service documentation is supplied to Xeroxexternal customers for informational purposes onlyand is intended for use by certified, product trained,service personal only. Xerox does not warrant orrepresent that such documentation is complete, nordoes Xerox represent or warrant that it will notify orprovide to such Customer any future changes to thisdocumentation. Customer’s service of equipment, ormodules, components, or parts of such equipmentmay void any otherwise applicable Xerox warranties.If the Customer services such equipment, modules,components, or parts thereof, the Customer releasesXerox from any and all liability for the Customer’saction, and the Customer agrees to indemnify,defend, and hold Xerox harmless from an7 third-partyclaims which arise directly or indirectly from suchservice.

While every care has been taken in the preparation ofthis manual, no liability will be accepted by Xeroxarising out of any inaccuracies or omissions.

Prepared by:Xerox CorporationGlobal Knowledge & Language Services780 Salt RoadWebster, NY 14580

Prepared for:Network Products Business UnitXerox Corporation800 Phillips RoadWebster, New York 14580

© Copyright 2000 by Xerox Corporation. All rightsreserved.

Xerox ®, The Document Company, the stylized X logo,and all Xerox product names and number names aretrademarks of XEROX CORPORATION.

Other company trademarks also acknowledged.

Copyright protection claimed includes all forms ofmatters of copyrightable materials and informationnow allowed by statutory or judicial law or hereinaftergranted, including without limitation, materialgenerated from the software programs which aredisplayed on the screen such as styles, templates,icons, screen displays, looks, etc.

Front Matter 5/00 DocuPrint M750/M760iii

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This equipment has been tested and found to complywith the limits for a class B digital device, pursuant topart 15 of FCC rules. These limits are designed toprovide reasonable protection against harmfulinterference when the equipment is operated in acommercial environment. This equipment generates,uses, and can radiate radio frequency energy and, ifnot Installed and used in accordance with theinstruction documentation may cause harmfulinterference, in which case the user will he requiredto correct the Interference at his own expense. Ifnecessary, the user should consult the dealer or anexperienced radio/television technician for additionalsuggestions. The user may find the FederalCommunications Commission helpful:

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Stock number: 004-000-00345-4

This booklet is available from the U.S. GovernmentPrinting Office, Washington, D.C., 20402

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This caution indicates that there are components thatare sensitive to damage caused by electrostaticdischarge

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DocuPrint M750/M760 5/00 Front Matteriv

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TITLE PAGE

INTRODUCTION............................................ivABBREVIATIONS...........................................ivORGANIZATION .............................................vRevision Control Chart ...................................vi

� � ��Section Contents.................................. 1-1

� � ��Section Contents.................................. 2-1

� !"��#��$�%��Section Contents.................................. 3-1

& � %�'��(��)��"��Section Contents.................................. 4-1

* � ��Section Contents.................................. 5-1

+ � ,��Section Contents.................................. 6-1

- � .��/��Section Contents.................................. 7-1

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The DocuPrint M750/M760 Service Manual is theprimary document used for repairing and maintainingthe M750/M760 Inkjet Printer.

This manual contains Service Call Procedures,Diagnostic Procedures, General Information, RepairAnalysis Procedures, Image Quality AnalysisProcedures, Wiring Data and Parts Lists that willenable the Service Representative to repairM750/M760 failures.

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EOF End of Forms

ESD Electrostatic Discharge

ILS Ink Level Sensor

LED Light-Emitting Diode

POST Power-On Self Test

RAM Random Access Memory

ROM Read Only Memory

SIMM Single In-line Memory Module

VAC Volts alternating current

VDC Volts direct current

Front Matter 5/00 DocuPrint M750/M760v

��2��This manual is divided into seven sections. The titleand description of each section of the manual is asfollows:

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This section is used to identify a suspected problem.It contains Call Flow, Initial Actions, CorrectiveActions, and Final Actions. This part of the servicemanual should always be used to start the servicecall.

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This section contains the procedures necessary torepair failures in the printer. This section alsocontains the procedures necessary to troubleshootimage quality problems.

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This section contains Image Quality RAPs for theDocuPrint M750/M760 printer.

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This section contains the instructions for removal,replacement, and adjustment of the spared parts.

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This section contains illustrations of disassembledsubsystems and a listing of the spared parts.

Part names are listed in this section of the manualeven if the part itself is not spared. All the parts thatare spared will have the part number listed. Parts thatare not spared will not have a number listed.

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This section contains diagnostic routines,features/options availability, printer setup procedures,and a listing of tools, supplies, and accessories.

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This section contains illustrations of the plug/jacklocations and the routing of power and signal cables.

DocuPrint M750/M760 5/00 Front Mattervi

%��Product

DocuPrint M750/M760Manual Title

DocuPrint M750/M760 ServiceManual

Part Number701PXXXXX

Page Date Page Date Page Date Page Date

DocuPrint M750/M760 5/00 Service Call Procedures1-1

Section 1

Service Call Procedures

1.1 Call Flow Diagram .........................................................................1-2

1.2 Initial Actions ................................................................................1-4

1.3 Corrective Actions ........................................................................1-5

1.4 Final Actions .................................................................................1-5

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

Service Call Procedures 5/00 DocuPrint M750/M7601-2

1.1 Call Flow Diagram

The basic troubleshooting steps are outlined in the Call Flow Diagram. All service calls begin with Initial

Actions and end with Final Actions.

Initial Actions

Corrective Actions

Parts List Troubleshooting Repair Procedures

Wiring Data General Procedures

Final Actions

Image Quality

Correct AnySecondary Problems


Printer Maintenance

IntroductionWhen the printer is being serviced, the following maintenance procedure should be performed.

ProcedureClean the following parts every time the printer is serviced:

Description ProcedureCover Clean using a Lint

Free Tissue35P2163(USCO/ACO) or600S4372 (RXL)and water.

Paper Feed roller Clean using a LintFree Tissue35P2163(USCO/ACO) or600S4372 (RXL)and water.

Paper Feed Pinchrollers and PaperFeed Guide

Clean using a LintFree Tissue35P2163(USCO/ACO) or600S4372 (RXL)and water.

Maintenance Station Clean using a LintFree Tissue35P2163(USCO/ACO) or600S4372 (RXL)and water.


1.2 Initial Actions

1. Verify the problem.

2. Check that the printer paper path is clear of foreign matter such as staples, paper clips, andpaper scraps.

3. After you have identified the problem symptom, check the following items:

• The printer is connected to a wall power outlet, and the outlet is supplying the correctvoltage.

• The printer power cord is not frayed or broken.

• The printer is correctly grounded.

• The printer is in an appropriate operating environment, with no extremes of heat

or humidity.

• The printer is on a level and stable surface.

• LED indicator shows errorconditionGo to 2.1.2 Error IndicatorTable

• POST error indicationGo to 2.2.1 POST ErrorTable

STATUS INDICATOR

• IMAGE QUALITYPROBLEMSGo to IQ 1 Image DefectEntry RAP in Section 3

PRINT QUALITY

• DEAD MACHINEGo to 2.2.2 PowerProblems

• ALL OTHER PROBLEMSGo to 2.1 Getting Started

OTHER FAULTS

Initial Actions

1. VERIFY AND CLASSIFY THE PROBLEM.

2. REPAIR THE PROBLEM.


1.3 Corrective Actions

1. If the printer has an obvious failure or fault, you can go directly to the appropriate ”RepairProcedures” in Section 4 or ”Troubleshooting” in Section 2 and begin corrective action.

2. If the fault is related to Image Quality, go directly to Section 3 to correct the problem.

3. After all corrective actions have been made, perform Final Actions.

1.4 Final Actions

1. Run Test Prints to evaluate print quality.

2. Refer to 2.2.7 Print Quality Problems and correct any print quality defects.

3. Correct any secondary problems (return to Corrective Actions, if necessary).

4. Reinstall the machine covers.

5. Clean the machine.

6. Verify printer operation with the printer connected to a host computer.

1.5 Maintenance Approach

The diagnostic information in this manual leads you to the correct replaceable unit or part. Use the error

indicator charts, symptom index, service checks, and diagnostic aids to determine the symptom and

repair the failure.

The user is directed, in the Printer Control program, to perform the head to head and bi-directional

alignment adjustments after replacing a print cartridge.

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


(THIS PAGE INTENTIONALLY LEFT BLANK)

DocuPrint M750/M760 5/00 Troubleshooting2-1

SECTION 2

Troubleshooting

2.1 Getting Started ..............................................................................2-3

2.1.1 Control Panel LED Indications ...............................................2-32.1.2 Error Indicator Table...............................................................2-32.1.3 Power On Self Test ................................................................2-42.1.4 Printer Tests...........................................................................2-42.1.5 Printer Operation and Evaluation...........................................2-4

2.2 Symptom Tables ...........................................................................2-5

2.2.1 POST Symptoms....................................................................2-52.2.2 Power Problems.....................................................................2-52.2.3 Control Panel Problems..........................................................2-52.2.4 Carriage Problems .................................................................2-62.2.5 Paper Feed Problems ............................................................2-62.2.6 Ink Level Sensing Problems ...................................................2-62.2.7 Print Quality Problems............................................................2-72.2.8 Communications/Data Transfer Problems ..............................2-7

2.3 Service Checks .............................................................................2-8

2.3.1 Power Service Check .............................................................2-82.3.2 Control Panel Service Check................................................2-112.3.3 Carriage Service Check........................................................2-112.3.4 Encoder Service Check ........................................................2-122.3.5 Paper Feed Service Check...................................................2-122.3.6 Ink Level Sensing Check ......................................................2-122.3.7 Pump Assembly/Maintenance Station Service Check ..........2-132.3.8 Communications/Data Transmission Check .........................2-13

Troubleshooting 5/00 DocuPrint M750/M7602-2



2.1 Getting StartedTo check the basic printer functions, print a Test Print. Observe printer behavior during the tests toenable fault isolation. In most cases, the printer will not have a print head installed when the printer isreturned for service. In this case, Section 3 Image Quality May not apply.

2.1.1 Control Panel LED IndicationsError indications are displayed by the LED indicator on the control panel. If your printer displays an errorindication during operation, refer to 2.1.2 Error Indicator Table and take the necessary action.

2.1.2 Error Indicator TableObserving the 3 LED indicators will provide a visual indication of the printer status. Refer to the ErrorIndicator table below to determine the printer status as indicated by the LED operation.

Status Symptom ActionLED 1(Ink)

LED 2(Paper)

LED 3(Power)

Off Off On Printer is idle. Refer to 2.2.2 PowerProblems.

BlinkingFast

Wrong Print Head or noPrint Head.

Check/replace print head.

On Printer error condition - lowink.

Replace Print headCartridge (Refer to Section4).

BlinkingFast

One of following errors:

a. Out of paper a. Add paper. b. Paper jam b. Refer to 2.3.5 Paper

Feed Service Check.On One or more of the ink

cartridges is low.Replace ink cartridge(s).

BlinkingFast

a. Out of ink or wrongprint head cartridge.

a. Install new print headcartridge.

b. Wrong cartridge. b. Install proper cartridge. c. Scan error (visual

movement of carriageduring print.

c. Refer to 2.3.3 CarriageService Check.

d. System error. d. Refer to 2.1.3 PowerOn Self Test.

BlinkingFast

BlinkingFast

BlinkingFast

Scan Carriage out ofposition, Home Sensor flagnot found, ROM checksumerror, RAM read/writeerror, NvRam read/writeerror, or IOT Control PWBerror.

Replace IOT Control PWB.


2.1.3 Power On Self TestThe printer performs a software-controlled Power On Self Test (POST) when power is initially applied.Unplug and then reconnect the power cord. This will initiate the POST routine. If the printer resets andis operational, the problem was one that was temporary. If the problem still exists, the 3 LED indicatorswill provide a visual indication of the printer status. Refer to 2.2.1 POST Symptoms and take thenecessary action.

2.1.4 Printer TestsThe POST test cannot determine problems that may be encountered during printing or situations whereink cartridge maintenance is required. To check these functions, the printer should be tested by runningan internal and external print test.

a. Internal Print Test. Running a Print Test will demonstrate the operational status of the printer.Run a print test (refer to Section 6, Print Head Test) to verify printer operation, print cartridgealignment and printer setup information.

b. External File Print. To verify that the printer can print from an external source, a file should besent from a host computer. This will check that the associated cabling is functioning properly aswell as ensuring that the handshaking between the printer and the host computer is correct. Todo this, connect the computer to a host computer with the appropriate printer drivers installed.Then send a print job from the host computer to the printer.

2.1.5 Printer Operation and EvaluationEvaluate the results of these tests to determine whether the printer is operating properly and, if not,which printer functions are not operating correctly. Refer to 2.2 Symptom Tables based on theobserved problems.


2.2 Symptom TablesThe symptom tables provide guidance in troubleshooting the printer, based on the results of running atest print or on overall visual operating performance of the printer during a file print from an externalcomputer.

2.2.1 POST SymptomsTo reinitiate the POST routine, press and hold the Resume button. If the test print runs successfully,the error was temporary. If the error remains, unplug and reconnect the power cord to run the testagain.

If the POST test fails, the LED indicators blink or light to indicate the nature of the failure. Refer to2.1.2 Error Indicator Table for error indications. Take the action indicated.If the error condition still exists, Refer to Section 4, Replace the IOT Control PWB.

2.2.2 Power Problems

Symptom ActionPrinter not powered up.Printer does not respond. Go to 2.3.1 Power Service Check.

2.2.3 Control Panel Problems

Symptom ActionPrinter LEDs do not: Light Turn OFFButtons are inoperative.Both buttons and LED indicators areinoperative.

Go to 2.3.2 Control Panel Service Check.


2.2.4 Carriage Problems

Symptom ActionNo carriage movement.

Slow carriage movement. For all symptoms listed, go to 2.3.3 CarriageService Check.

Carriage stops.

Carriage strikes the side of machineand motor continues to run.

2.2.5 Paper Feed Problems

Symptom ActionPaper fails to stop at first print line. Fails to pick up the paper Picks up more than one sheet Picks up paper, but fails to feed Paper jams Paper fails to exit Noisy paper feed Paper skews

Go to 2.3.5 Paper Feed Service Check.

2.2.6 Ink Level Sensing ProblemsSymptom Action

Low ink is not sensed.Low ink is sensed all the time.Out of Ink is sensed all the time.

Go to 2.3.6 Ink Level Sensing Check.


2.2.7 Print Quality Problems

Symptom Action

Printout incomplete.

Irregular spots or unwanted lines

For all symptoms, Refer to Section 3, ImageQuality RAPs.

Unwanted or irregular dots.

Missing color in printout.

2.2.8 Communications/Data Transfer Problems

Symptom Action

Printer not communicating with hostcomputer.

Go to 2.3.8 Communications/DataTransmission Service Check.


2.3 Service Checks

2.3.1 Power Service CheckDisconnect the power cord. Remove paper from printer prior to performing the power service check.Observe all necessary ESD precautions when removing and handling the IOT Control PWB, InterfacePWB, Power Supply PS1 PWB, or any other electronic boards or assemblies. Refer to 7.1 ElectricalConnections for component locations.

Table 2.3.1 Power Service Check

Item Part Action

1 Power Line Cord Check the power line cord for damage. Check the continuity of theline cord and replace if necessary.

2 Power Supply 1. Remove the ac power plug from the printer.2. Disconnect the power supply cable from IOT Control PWB

connector CN1.3. Connect the ac power plug to the printer.4. Check for correct voltages at power supply connector as follows:

J1-5 and 6: +5 VDCJ1-1 and 2: +43 VDC

5. If any voltage is incorrect, replace the Power Supply PS1 PWB(PL 1.1).

3 IOT Control PWB 1. Remove the Interface PWB (PL 1.2).

2. Disconnect all cables (except the power cable at CN1) from theIOT Control PWB.

3. Connect the ac power plug to the printer.4. Check for correct voltages on the IOT Control PWB.

CN2-5: +5 VDCCN2-17: +43 VDC

5. If either voltage is incorrect, replace the IOT Control PWB (PL1.2).

4 Carriage Motor MOT1 1. Disconnect the ac power plug from the printer2. Connect the Carriage Motor MOT1 to IOT Control PWB

connector CN4.3. Connect the ac power plug to the printer.4. Check for correct voltages on the IOT Control PWB.

CN2-5: +5 VDCCN2-17: +43 VDC



5. If either voltage is incorrect, replace the Carriage Motor MOT1(PL 1.3).

5 Advance Motor 1. Disconnect the ac power plug from the printer2. Connect the Advance Motor to IOT IOT Control PWB connector

CN5.3. Connect the ac power plug to the printer.4. Check for correct voltages on the IOT IOT Control PWB.

CN2-5: +5 VDCCN2-17: +43 VDC

5. If either voltage is incorrect, replace the Advance Motor (PL 1.6).6 Maintenance Motor 1. Disconnect the ac power plug from the printer

2. Connect the Maintenance Motor to IOT IOT Control PWBconnector CN6.

3. Connect the ac power plug to the printer.4. Check for correct voltages on the IOT IOT Control PWB.

CN2-5: +5 VDCCN2-17: +43 VDC

5. If either voltage is incorrect, replace the Maintenance Station (PL1.4).

7 Maintenance HomeSensor

1. Disconnect the ac power plug from the printer2. Connect the Maintenance Motor to IOT IOT Control PWB

connector CN7.3. Connect the ac power plug to the printer.4. Check for correct voltages on the IOT IOT Control PWB.

CN2-5: +5 VDCCN2-17: +43 VDC

5. If either voltage is incorrect, replace the Maintenance HomeStation (PL 1.4).

8 Ink Level Sensor/Brand Sensor

1. Disconnect the ac power plug from the printer2. Connect the ILS PWB to IOT IOT Control PWB connector CN3.3. Connect the ac power plug to the printer.4. Check for correct voltages on the IOT IOT Control PWB.

CN2-5: +5 VDCCN2-17: +43 VDC

5. If either voltage is incorrect, replace the ILS PWB (PL 1.3).9 Interface PWB 1. Disconnect the ac power plug from the printer

2. Connect the Interface PWB to IOT IOT Control PWB connectorCN2 (board-to-board connector). Do not connect any other



connectors to the Interface PWB.

NOTE: The print head will move when the ac power plug isconnected in the next step.3. Connect the ac power plug to the printer.4. Check for +5 VDC on the Interface PWB connector CN5-13.

5. If the voltage is incorrect, replace the Interface PWB (PL 1.2).10 Black Ink Head 1. Disconnect the ac power plug from the printer

2. Connect the Black Ink Head to Interface PWB connector CN2.3. Connect the ac power plug to the printer.4. Check for +5 VDC on the Interface PWB Capacitor C8 (+).

5. If the voltage is incorrect, replace the Carriage (PL 1.4).11 Color Ink Head 1. Disconnect the ac power plug from the printer

2. Connect the Color Ink Head to Interface PWB connector CN3.3. Connect the ac power plug to the printer.4. Check for +5 VDC on the Interface PWB Capacitor C8 (+).

5. If the voltage is incorrect, replace the Carriage (PL 1.4).12 Front Panel 1. Disconnect the ac power plug from the printer

2. Connect the Front Panel to Interface PWB connector CN4.3. Connect the ac power plug to the printer.4. Check for +5 VDC on the Interface PWB Capacitor C8 (+).5. If the voltage is incorrect, replace the Printer.


2.3.2 Control Panel Service CheckDisconnect and then reconnect the power cord while observing the front panel LEDs.

Item Part Action

1 Button(s) inoperative Remove main cover and check action of button(s) in cover. Ifbutton(s) is OK, replace the Printer.

2 Panel inoperative If both the buttons and the LEDs are inoperative, replace thePrinter.

2.3.3 Carriage Service CheckDisconnect the power cord. While holding the Control button, reconnect the power cord. A test printpage will start printing. Continue to hold the button until the printing starts, then release the button.Observe the printer operation.

Item Part Action1 Carriage Motor MOT1 Check the motor for binds, or loose motor pulley.

Disconnect the Carriage Motor MOT1 connector CN4 from the IOTIOT Control PWB. Check resistance between pins 1-2 and 3-4 onthe motor cable. (Refer to Section 7.) If the resistance is greaterthan 20 Ohms, replace the Carriage Motor MOT1 (PL 1.3).

Check for motor pins shorted to the motor housing. If you find a pinshorted to the housing, replace the Carriage Motor MOT1 (PL 1.3).If the failure remains, replace the IOT IOT Control PWB (PL 1.2).

2 IOT IOT Control PWB Disconnect the Carriage Motor MOT1 connector CN4 from the IOTIOT Control PWB. Check for +43 VDC from pin 1 to ground.Check for +43 VDC from pin 3 to ground. If any voltages areincorrect, replace the IOT IOT Control PWB (PL 1.2).

3 Carriage Guide Rod Clean the carriage rod.

Note: Lubricate the rod and the carriage rod bearing surface.(Refer to Section 4).

4 Carriage Timing BeltIdler Pulley PartsCarriage Frame

Check for worn, loose or broken parts. Check for obstructionsblocking carriage movement.

5 Print Head Cable Be sure all connectors are fully seated. Check the cables fordamage.


2.3.4 Encoder Service CheckDisconnect and then reconnect the power cord while observing the Front Panel LEDs.

Item Part Action

1 Timing Fence Check the Timing Fence for wear, dirt and grease. Clean asnecessary. If worn, replace the Timing Fence (PL 1.3)

2 Encoder Sensor Check the encoder sensor. If defective, replace the Printer.

2.3.5 Paper Feed Service CheckClear any paper in the printer. Disconnect the power cord. While holding the Control button, reconnectthe power cord. Continue to hold the button until the test print starts printing, then release the button. Atest print page prints out.

Item Part Action

1 Advance Motor Disconnect the Paper Transport Motor connector from the IOT IOTControl PWB connector CN5. Check the motor windings 3-4 and 5-6 for continuity. If incorrect, replace the Advance Motor (PL 1.6).

2 IOT IOT Control PWBDrive

Check for +43 VDC at pins 1 and 2 of IOT Control PWB connectorCN5. If voltage is incorrect, replace the IOT Control PWB (PL 1.2).

2.3.6 Ink Level Sensing CheckItem Part Action

1 ILS PWB Check that the ILS PWB cable is firmly seated into IOT ControlPWB connector CN3.

Replace the ILS PWB (PL 1.3).


2.3.7 Pump Assembly/Maintenance Station Service CheckThe pump assembly operates when the Advance Motor operates to clean the ink from the ink cartridgenozzles. The maintenance station seals the ink cartridge nozzles when it is not being used to preventthe nozzles from drying

Item Part Action

1 Pump Assembly The pump assembly operates any time the Advance Motoroperates. Disconnect the tubing from the maintenance station.Check that the pump is creating a vacuum of 280 mm + 50 mm.Also, check that the pump is exhausting ink into the waste pad.Verify that the tubing is not clogged or pinched. Replace parts asnecessary.

3 Maintenance Station Check the maintenance station for worn or broken parts.A worn cap can cause the print cartridge nozzles to dry and clog.Check for loose or worn cap.Check cleaning operation as follows:1. Weigh the print head.2. Install print head in printer.

3. Clean the print head (refer to Quick Reference Guide forprocedure).

4. Remove the print head.5. Weigh the print head.6. The difference between the original weight in step 1 and the

weight in step 5 must be > 0.26 grams. If not, replacemaintenance station (PL 1.4).

2.3.8 Communications/Data Transmission Service CheckEnsure that you are using the correct IEEE 1284-B TYPE interface cable or the correct USB cable andthat it is not too long (up to 6 feet for a parallel interface cable).

Ensure that the printer and the personal computer are connected together correctly and the appropriateprint drivers are installed. Send a file to be printed from the host computer.


DocuPrint M750/M760 5/00 Image Quality3-1

Section 3

Image Quality

IQ1 Image Defect Entry RAP .............................................................3-2

Image Quality 5/00 DocuPrint M750/M7603-2

IQ1 Image Defect Entry RAP

1. Print the Test Print:a. Load paper into the Paper Tray.b. Press and hold the Paper button until the

test print starts, then release the button.c. The printer prints the test print shown in

Figure 1. When the test print iscomplete, the printer initializes andreturns to the Ready status.

d. If the test print fails to print, unplug thepower cord from the rear of the printerand plug it in again. Repeat steps athrough c.

2. Refer to the DEFECT Column in Table 1 thatbest describes the image quality problem.

3. If the problem is with external input only,refer to Section 2 for troubleshooting.

Figure 1. Test Print

DocuPrint M750/M760 5/00 Image Quality3-3

Defect Cause SolutionBlankPrint

Printhead Perform the following:

1. Remove and reinstall the Print Head.2. Connect the printer to a host computer and perform the

Printhead Clean procedure. Repeat up to 5 times asnecessary.

3. If the problem still exists, refer to 2.2.7 Print QualityProblems.

Whitehorizontallines andstreaks

The Printhead nozzles maybe blocked.

Perform the following:

1. Connect the printer to a host computer and perform thePrinthead Clean procedure. Repeat up to 5 times asnecessary

2. Make another Test Print. If the print still has lines andstreaks repeat the above process up to 5 times.

3. If the problem still exists, replace the Print Head.

Print isfaint ormissing

1. A non-recommendedpaper is being used orthe paper is damp.

2. Defective Cartridge orthe ink supply may benearly empty.

3. The Print Head nozzlesmay be blocked.

1. Replace the paper with Xerox recommended paper.

2. Replace the Cartridge.

3. Perform the following:

a. Connect the printer to a host computer and performthe Printhead Clean procedure. Repeat as necessary.

b. Run a Test Print. If the print is still faint, Repeat theprocess 5 more times.

c. If the problem is still not corrected replace the PrintHead.

Blurry orjaggedverticallines

1. Paper 1. Insert different paper.

Printimage isclipped oroff edge ofmedia

1. Print off edge of media 2. Document margins may

exceed printer margins.

1. Ensure that the Print Driver setup has the correctselection of media size and type.

2. Adjust margins in the application as necessary.

Table 1. Image Quality Defects

Image Quality 5/00 DocuPrint M750/M7603-4


Xerox DocuPrint M750/M760 5/004-1

Section 4

Repairs1.0 CoversREP 1.0 Top Cover ...........................................................................................4-3REP 1.1 U-turn Paper Guide/ Rear Cover ........................................................4-4REP 1.2 Main Cover .........................................................................................4-5REP 1.3 Bypass Tray........................................................................................4-62.0 Rear FrameREP 2.1 Power Supply (PS1) ...........................................................................4-7REP 2.2 Control PWB/ Interface PWB..............................................................4-83.0 Main ChassisREP 3.1 Carriage Belt.......................................................................................4-9REP 3.2 Carriage Motor (MOT1) ....................................................................4-10REP 3.3 Encoder Tape ...................................................................................4-12REP 3.4 ILS PWB ...........................................................................................4-134.0 Carriage UnitREP 4.1 Maintenance Station.........................................................................4-145.0 Feed Roller UnitREP 5.1 Feed Roller .......................................................................................4-156.0 Main Frame UnitREP 6.1 Waste Pad ........................................................................................4-17REP 6.2 Paper Transport/Pump Motor (MOT2)..............................................4-18

RepairsTable of Contents

5/00 Xerox DocuPrint M750/M7604-2


RepairsTable of Contents


REP 1.0 Top Cover

Parts List on PL 1.1

Removal1. (Figure 1): Open the top cover and remove it.

Replacement1. Position the Top Cover so that the pivot hinges align with the corresponding pivots on the Main Cover.2. Press behind the Top Cover to engage the pivot hinges with the Main Cover pivots.3. Close the Top Cover.

RepairsREP 1.0

100103A-XJ.0

2Push the top cover in aleft direction carefullywhile pushing the righthinge out of the pivothole

Figure 1. Removing the Top Cover

1Open the top cover


REP 1.1 U-turn Paper Guide/ Rear Cover

Parts List on PL 1.1, 1.2

Removal1. (Figure 1): Remove the Printer Cable and the Power Cord.2. Open the U-turn Paper Guide and remove it.

CAUTIONEnsure the ribbon cable, attached to the rear cover is not damaged.

3. (Figure 2): Remove the Rear Cover.

Figure 1. Removing the Printer Cable, Power Cord and the U-turn Paper Guide

100101A-XJ.0

2Open the U-turnPaper Guide andpull it off thehinges to removeit

U-turn Paper Guide

1Remove the Printer Cableand the Power Cord

Printer Cable

REAR VIEW

Power Cord

RepairsREP 1.1

Figure 2. Removing the Rear Cover

100102A-XJ.0

3Disconnect theribbon cable beforeremoving the Maincover (REP 1.2)

1Remove the two screwsand carefully remove theRear Cover as describedin Step 2Ribbon Cable

2Release the tabs oneach side of cover bymoving the cover in adownward direction

REAR VIEWNOTE: Removethe knob beforereassembly


REP 1.2 Main Cover


Removal1. (Figure 1): Remove the Main Cover.

Figure 1. Removing the Main Cover

100103A-XJ.0

Top Cover

Main Cover

1Open the Top Coverand remove thescrews (2) andremove the MainCover with the TopCover

Release the Tabson each side

RepairsREP 1.2


REP 1.3 Bypass Tray


Removal1. (Figure 1) Remove the Bypass Tray.

100101A-XJ.0

Figure 1. Removing the Bypass Tray

1Open the BypassTray and carefullypull it off the righthinge first, thendisconnect the lefthinge and bracketand remove it

Bypass Tray

RepairsREP 1.3


REP 2.1 Power Supply (PS1)


Removal1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. (Figure 1): Remove the Power Supply (PS1).

RepairsREP 2.1

100108A-XJ.0

Figure 1. Removing Power Supply (PS1)

Pawl

1Disconnect the connectors

NOTE: Make surethe pawl is outsidethe sensor duringreassembly

2Remove the screws(2) and remove thePower Supply

Sensor


REP 2.2 Control PWB/Interface PWB


Removal

CAUTIONBe careful not to touch any electrical connection or component on the PWB’s with a magnetic tipscrewdriver, which can erase setup programs on the E-proms.

1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. (Figure 1): Remove the Control PWB.

4. (Figure 2): Remove the Interface PWB.

RepairsREP 2.2

100106A-XJ.0

Figure 1. Removing the Control PWB

Shield Box R

1Remove the Screws(5) and remove theShield Box R

Screw

2Remove the Screws(3) and remove theControl PWB

Control PWB

1Remove the Screws (2)and remove the ShieldBox L

Figure 2. Removing the Interface PWB

Shield Box L Interface PWB

2Disconnect theconnectors, removethe Screw andremove theInterface PWB


REP 3.1 Carriage Belt


Removal

NOTE: Before removing the carriage belt observe the position of the belt attached to the rear side of the carriageassembly.

1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. (Figure 1): Remove the Carriage Belt.

Replacement4. Press the lower part of the carriage belt into the belt clamp on the rear side of the carriage assembly first. Then

mount the belt onto each belt pulley in the reverse order of removal.

NOTE: If you need access to the rear side of the carriage unit, go to REP 3.2: step 7.

RepairsREP 3.1

100114A-XJ.0

Figure 1. Removing the Carriage Belt

Right Pulley

Carriage Belt

1With the belt on thepulley, push the beltand pulley in thedirection shown torelieve the tensionand remove the beltoff the left pulley.

NOTE: Observe thebelt is attached to therear side of thecarriage assembly(jammed into a clamp)


REP 3.2 Carriage Motor (MOT1)


Removal1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. Remove the Power Supply (PS1) (REP 2.1).4. Remove the Control PWB and the Shield Box L in front of the Interface PWB. (REP 2.2).5. Remove the Carriage Belt (REP 3.1).6. Remove the Encoder Tape (REP 3.3).7. (Figure 1): Remove the Slide Shaft.

NOTE: The carriage engages the carriage belt, encoder tape and the top rear frame.

100113A-XJ.0

Adjust Lever

2Remove the AdjustLever and spring,and the right shaftspring and bearing

Figure 1. Removing the Slide Shaft

Left ShaftSpring

Scribe position

Shaft Bearing

1Remove theleft shaftspring andbearing. (Alignthe key on thebearing to thecut-out in theframe)

NOTE: If theadjust caminterferes withthe bearingremoval,scribe itsposition androtate the camout of the way.

Spring

Adjust Cam

Right ShaftSpring andBearing

3Move the slideshaft out of the wayto access thescrew.

(continued)


REP 3.2 Carriage Motor (MOT1) (continued)

8. (Figure 2): Disconnect the ribbon cable to the Carriage Motor (MOT1).

9. (Figure 3): Remove the Carriage Motor (MOT1).

RepairsREP 3.2

100118A-XJ.0

Figure 2. Disconnecting the Ribbon Cable

1Disconnect the CarriageMotor ribbon cablerelease it from theretainer clips

Interface PWB

Retainer clip

Carriage Motor

100119A-XJ.0

1Remove the hexnuts (4) and removethe Carriage Motor

Figure 3. Removing the Carriage Motor (MOT1)


REP 3.3 Encoder Tape


Removal1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).NOTE: Before removing the Encoder Tape observe the position of the tape passing through the sensor slot on therear side of the carriage assembly3. (Figure 1): Remove the Encoder Tape.

Replacement4. Ensure the encoder tape is positioned in the sensor slot on the rear side of the carriage unit.

NOTE: If you need access to the rear side of the carriage Unit, go to REP 3.2: step 7.

100111A-XJ.0

Figure 1. Removing the Encoder Tape

1Loosen the fence springscrew and remove theEncoder Tape byunhooking the tape ateach end

NOTE: The blackmarker on the tape ispositioned to the rightside

RepairsREP 3.3


REP 3.4 ILS PWB


Removal1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. Remove the Main Chassis (REP 4.1: Step 3 through 5).4. (Figure 1): Remove the ILS PWB.

RepairsREP 3.4

100109A-XJ.0

Figure 1. Removing the ILS PWB

1Release the taband remove theILS Cover

Tab

2Release the tabsand remove theILS PWB

Tabs

3Release the ILSPWB RibbonCable from themaintenancestation


REP 4.1 Maintenance Station


Removal1. Remove the Main Chassis (REP 5.1: Steps 1 through 7).2. (Figure 1): Remove the Maintenance Station.

RepairsREP 4.1

100121A-XJ.0

Pawl

NOTE:Be careful not todamage the Pawl onthe MaintenanceStation

Figure 1 Removing the Maintenance Station

1Remove the screws(3) and remove theMaintenance Station

Screw


REP 5.1 Feed Roller Assembly


Removal1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. Remove the Power Supply (PS1) (REP 2.1)4. Remove the Control PWB and the Interface PWB (REP 2.2)5. Remove the Ink Cartridges and remove the two cartridge holders (lay the holders on their sides).6. (Figure 1): Remove the Pad Tray.

100110A-XJ.0

Figure 1. Removing the Waste Pad Tray

1Push the pawl in thedirection shown torelease and removethe Waste Pad Trayfrom theMaintenance Station

Pawl

Waste Pad Tray

Waste Pads (2)

2Disconnect the tube

Tabs

Maintenance Station

(continued)

RepairsREP 5.1


REP 5.1 Feed Roller Assembly (continued)

7. (Figure 2): Remove the Main Chassis.

8. (Figure 3): Remove the Feed Roller.

100127A-XJ.0

Figure 3. Removing the Feed Roller

2Lift the feed rollerassembly up andremove the feedroller

Lubricateif dry

1Release thelatch to the upposition

100111A-XJ.0

2Remove seven (7) screwsand lift the Main Chassisup off the base frame

Figure 2. Removing the Main Chassis

MaintenanceStation Pawl

1Move the carriage to leftcenter position

MaintenanceStation

RepairsREP 5.1


REP 6.1 Waste Pad


Removal1. Remove the U-turn Paper Guide and Rear Cover (REP 1.1).2. Remove the Main Cover (REP 1.2).3. (Figure 1): Remove the Waste Pad.

RepairsREP 6.1

100110A-XJ.0

Figure 1. Removing the Waste Pads

1Push the pawl in thedirection shown torelease and removethe Waste Pad Tray

Pawl

Waste Pad Tray

Waste Pads (2)

2Disconnect the tube


REP 6.2 Paper Transport/Pump Motor (MOT2)


Removal1. Remove the Remove the Feed Roller (REP 5.1).2. (Figure 1): Remove the “Y” Gear.

RepairsREP 6.2

(continued)

100139A-XJ.0

1Release the tab andremove the gear

Figure 1. Removing the “Y” Gear

Tab


REP 6.2 Paper Transport/Pump Motor (MOT2) (continued)

3. (Figure 2): Remove the Eject Roller

4. (Figure 3): Remove the Eject Clutch Assembly.

(continued)

RepairsREP 6.2

100122A-XJ.0

Figure 2. Removing the Eject Roller

Lubricate

1Release the tab tothe up position

2Release the springand remove theEject Roller

2Remove the EjectClutch Assembly

Figure 3. Removing the Eject Clutch Assembly

Lubricate1Release the tab tothe position shown


REP 6.2 Paper Transport/Pump Motor (MOT2) (continued)

5. (Figure 4): Remove the Paper Transport/Pump Motor (MOT2)

100138A-XJ.0

1Disconnect the tubes

Figure 4. Removing the Paper Transport/Pump Motor (MOT2)

2Remove thescrews andremove themotor

Xerox Docuprint M750/M760 5/00 Parts List5-1

Section 5Parts ListsPL 1.1 Covers............................................................................................................. 5.2

PL 1.2 Rear Frame Assembly................................................................................... 5.4

PL 1.3 Main Chassis Assembly................................................................................ 5.6

PL 1.4 Carriage Assembly ........................................................................................ 5.8

PL 1.5 Feed Roller Assembly ................................................................................. 5.10

PL 1.6 Main Frame Assembly................................................................................. 5.12

PL 1.7 Tray Assembly ............................................................................................. 5.14

Part Number Index ....................................................................................................... 5.16

Parts List 5/00 Xerox Docuprint M750/M7605-2

PL 1.1 COVERS


PL 1.1 COVERS

ITEM PART DESCRIPTION1 050N00308 Bypass Tray (REP 1.3)

2 ----- Screw (3x10) (Not Spared)

3 ----- Rear Cover (Not Spared) (REP 1.1)

4 ----- Main Cover (Not Spared) (REP 1.2)

5 ----- Knob (Not Spared)

6 002N01660 Top Cover (M750) (REP 1.0)

6 002N01661 Top Cover (M760) (REP 1.0)

7 ----- Panel Frame (Not Spared)


9 ----- LED Lens (Not Spared)

10 ----- Panel FFC (Not Spared)

11 ----- Panel PWB Unit (Not Spared)

12 ----- PWB Cover (Not Spared)

13 ----- Attachment R (Not Spared)

14 ----- Attachment L (Not Spared)

15 ----- Panel Frame Assembly (Not Spared)


PL 1.2 REAR FRAME ASSEMBLY


PL 1.2 REAR FRAME ASSEMBLY

ITEM PART DESCRIPTION1 ----- PS Encloser (Not Spared)

2 105N01321 Power Supply (PS1) (REP 2.1)

3 ----- Shield Box (Not Spared)

4 140N05511 Interface PWB (REP 2.2)

5 ----- Screw (Not Spared)

6 ----- AC Inlet Cover (Not Spared)

7 ----- AC Inlet Harness (Not Spared)

8 ----- U Support Roller (Not Spared)

9 ----- U Support Roller Spring (Not Spared)

10 ----- U Turn Paper Guide (Not Spared) (REP 1.1)

11 ----- U Rock Arm L (Not Spared)

12 ----- U Rock Arm R (Not Spared)

13 ----- U Rock Reverse (Not Spared)

14 ----- U Rock Spring (Not Spared)

15 ----- U-PG Cover (Not Spared)


18 ----- Shield Box R (Not Spared)

19 140N05512 Control PWB (M750) (REP 2.2)

19 140N05513 Control PWB (M760) (REP 2.2)

20 ----- Shield Box L (Not Spared)

21 ----- U Paper Guide Assembly (Not Spared)


PL 1.3 MAIN CHASSIS ASSEMBLY


PL 1.3 MAIN CHASSIS ASSEMBLY

ITEM PART DESCRIPTION1 ----- Paper Guide (Not Spared)

2 ----- Actuator Lever (Not Spared)

3 ----- Actuator Lever Spring (Not Spared)

4 ----- Pinch Roller Spring (Not Spared)

5 ----- Pinch Holder (Not Spared)

6 ----- Pinch Roller (Not Spared)

7 ----- Star Spring (Not Spared)

8 ----- Star Roller (Not Spared)

9 ----- Star Holder (Not Spared)

10 ----- Belt Spring (Not Spared)

11 ----- Belt Reverse (Not Spared)

12 ----- Belt Pulley (Not Spared)

13 023N00757 Carriage Belt (REP 3.1)

14 ----- ILS Case (Not Spared)

15 140N05510 ILS PWB (REP 3.4)

16 ----- ILS Cover (Not Spared)

17 ----- Adjust Lever (Not Spared)

18 ----- Adjust Lever Spring (Not Spared)

19 ----- Shaft Spring (Not Spared)

20 ----- Shaft Bearing (Not Spared)


22 ----- Adjust Cam (Not Spared)

23 ----- Slide Shaft (Not Spared)

24 ----- Platen (Not Spared)

25 ----- Screw (Not Spared)

26 001N00314 Encoder Tape (REP 3.3)

27 ----- Fence Spring (Not Spared)

28 ----- FFC Holder (Not Spared)

29 ----- Main Chassis (Not Spared)

30 ----- Nut (M3) (Not Spared)

31 ----- Protection Rubber (Not Spared)

32 127N01118 Carriage Motor (MOT 1) (REP 3.2)


PL 1.4 CARRIAGE ASSEMBLY


PL 1.4 CARRIAGE ASSEMBLY

Item Part Description1 ----- Screw (3x8) (Not Spared)

2 ----- MS Guide (Not Spared)

3 094K04340 Maintenance Station (REP 4.1)

4 ----- Carriage Guide K (Not Spared)

5 ----- Carriage Guide C (Not Spared)

6 ----- FPC Holder (Not Spared)


8 ----- Carriage Sensor

9 ----- Ratch Reverse Cam K (Not Spared)

10 ----- Ratch Reverse (Not Spared)

11 ----- Reverse Release Spring (Not Spared)

12 ----- Ratch Reverse Cam C (Not Spared)

13 ----- Rock Lever Spring (Not Spared)

14 ----- Rock Lever (Not Spared)

15 ----- BC Guide (Not Spared)

16 ----- BC Spring (Not Spared)

17 ----- Adjust Spring (Not Spared)

18 ----- Slider Upper (Not Spared)

19 ----- Ground Wire (Not Spared)

20 ----- A Guide K (Not Spared)

21 ----- Carriage Base (Not Spared)

22 ----- A Guide C (Not Spared)

23 ----- A Spring (Not Spared)

24 ----- A Guide (Not Spared)

25 ----- A Guide Pin (Not Spared)

26 ----- Connector Spring (Not Spared)

27 ----- Connector Plate C (Not Spared)

28 ----- Connector Plate K (Not Spared)

29 ----- Adjust Plate (Not Spared)


PL 1.5 FEED ROLLER ASSEMBLY


PL 1.5 FEED ROLLER ASSEMBLY

ITEM PART DESCRIPTION1 ----- Eject Gear (Not Spared)

2 ----- E Roller Bearing (Not Spared)

3 ----- E Slider Spring (Not Spared)

4 ----- E Slider (Not Spared)

5 ----- Eject Roller (Not Spared)

6 ----- E Change Spring (Not Spared)

7 ----- E Guide Roller (Not Spared)

8 ----- E Guide R Belt (Not Spared)

9 ----- E Guide (Not Spared)

10 ----- E Clutch Gear (Not Spared)

11 ----- E Clutch Roller (Not Spared)

12 ----- E Clutch Spring (Not Spared)

13 ----- E Clutch Shaft (Not Spared)

14 ----- E Arm (Not Spared)

15 ----- E Roller Bearing R (Not Spared)

16 ----- F Roller Bearing R (Not Spared)

17 ----- U Roller (Not Spared)

18 022N01105 Feed Roller (REP 5.1)


PL 1.6 MAIN FRAME ASSEMBLY


PL 1.6 MAIN FRAME ASSEMBLY

Item Part Description1 ----- U Pick Up Guide (Not Spared)

2 ----- U Support Roller (Not Spared)

3 ----- U Support Roller Spring (Not Spared)

4 ----- U Pick Up Arm (Not Spared)

5 ----- U Pick Up Sheet (Not Spared)

6 ----- U Pick Up Spring (Not Spared)

7 ----- U Return Arm (Not Spared)

8 ----- Rubber Sheet (Not Spared)

9 ----- Paper Guide Spring (Not Spared)

10 ----- U Stopper (Not Spared)

11 ----- U Stopper Arm (Not Spared)

12 ----- U Stopper Spring (Not Spared)


14 ----- Tube Holder (Not Spared)

15 ----- Bracket (Not Spared)

16 019N00466 Waste Pad (REP 6.1)

17 ----- Pad Tray (Not Spared)

18 ----- Tube Cover (Not Spared)

19 ----- Tube (Not Spared)

20 ----- Tube B (Not Spared)

21 ----- Joint (Not Spared)

22 ----- Pump (Not Spared)

23 127N01119 Paper Transport/Pump Motor (MOT 2) (REP 6.2)

24 ----- U Drive Gear (Not Spared)

25 ----- Nut (M3) (Not Spared)

26 ----- Y Gear (Not Spared)

27 ----- Y Plate (Not Spared)


29 ----- U Cam Spring (Not Spared)

30 ----- U Left Plate (Not Spared)

31 ----- U Cam Gear (Not Spared)

32 ----- U-W Gear (Not Spared)

33 ----- U Frame (Not Spared)


PL 1.7 TRAY ASSEMBLY


PL 1.7 TRAY ASSEMBLY

Item Part Description1 ----- U Cam Crank (Not Spared)

2 ----- U Arm Lever (Not Spared)

3 ----- U Rotary Spring (Not Spared)

4 ----- U Rotary P Arm (Not Spared)

5 ----- U Rotary Plate (Not Spared)

6 ----- U Cushion Sheet (Not Spared)

7 ----- U Delivery Tray (P/O Item 16)

8 ----- U Extension Tray (P/O Item 16)

9 ----- U Delivery Stopper (P/O Item 16)

10 ----- U Paper Feed Tray (P/O Item 17)

11 ----- U Front Panel (P/O Item 17)

12 ----- U Card Guide (P/O Item 17)

13 ----- U Paper Range Lever (P/O Item 17)

14 ----- U Paper Range Spring (P/O Item 17)

15 ----- U Wide Lever (Not Spared)

16 050N00309 Paper Supply Assembly (M750)

16 050N00311 Paper Supply Assembly (M760)

17 050N00310 Eject Tray Assembly (M750)

17 050N00312 Eject Tray Assembly (M760)


Part Number Index

Part Number PL Loc. Item001N00314 1.3 26

002N01660 1.1 6

002N01661 1.1 6

019N00466 1.6 16

022N01105 1.5 18

023N00757 1.3 13

041N00204 1.4 8

050N00308 1.1 1

050N00309 1.7 16

050N00310 1.7 17

050N00311 1.7 16

050N00312 1.7 17

094K04340 1.4 3

105N01321 1.2 2

127N01118 1.3 32

127N01119 1.6 23

140N05510 1.3 15

140N05511 1.2 4

140N05512 1.2 19

140N05513 1.2 19

DocuPrint M750/M760 5/00 General Procedures6-1

Section 6General Procedures6.1 Diagnostics ....................................................................................6-2

GP 1 Printhead Test........................................................................6-2

6..2 Product Specifications....................................................................6-4

Supplemental Tools and Supplies ...................................................6-5

General Procedures 5/00 DocuPrint M750/M7606-2

Diagnostics

GP 1 Printhead Test

Procedure

1. Print the Test Print:a. Load paper into the Paper Tray.b. Press and holding the Resume buttonfor about two seconds.c. The printer prints the test print shown in Figure 1. When the test print is complete, the printer initializes and

returns to the Ready status.d. If the test print fails to print, repeat steps a through c.e. If the test print fails again, refer to Section 2 for troubleshooting.


Figure 1. Test Print Sample

Figure 1. Sample Test Pattern


Product SpecificationsTechnology Drop on Demand Thermal Inkjet

Engine Type 2-Pen (K and CMY)

Operating System Windows 95/98, NT 4.0, Windows 2000 Professional (available at afuture date)

Minimum Requirements 32MB recommended, 16MB minimum, 486, 66mhz

Printer Memory M750: 2 MB

M760: 4 MB

Interface IEEE 1284 (ECP Support), USB (without HUB Mode)

Networkable 750: No

760: Yes, via an external print server through IEEE-1284 with anoptional Network Adapter

Print Speed (See Note) 750: Mono: 10ppm Fast Mode

Color: 6ppm

760: Mono: 12ppm Fast Mode

Color: 8ppm

Print Resolution Draft: 300x600 dpi

Express: 600x600 dpi

Normal: 600x600 dpi

Best: 1200x1200 dpi

Print Language PCL3

Paper Size Maximum: 8.5 inches x 14 inches (216mm x 356mm)

Minimum: 3.0 inches x 5.0 inches (76.2mm x 127mm)

Paper Weight 16 to 110 lb. (60 to 200gsm)

Media Type Plain paper, Coated paper, Glossy, Photo Gloss, Film, Transparencies,Envelopes, Labels, Iron-on Transfers, Banners, Postcards, JapanesePostcards, Index Cards

Standard Sizes Letter, Legal, A4, A5, B5

Paper Feed Automatic: 150 Sheets of 20 lb. cut sheets

Manual Tray Single Sheet (Top/Rear)

Banner Paper Feed 5 sheets

Output Tray Capacity Maximum 50 sheets

Maximum Cable Length 18 ft of USB (Universal Serial Bus) cable

10 ft of standard IEEE 1284 (cables not included) (See note)

Warranty 1 year warranty; telephone help line for immediate assistance.

Note: Non-standard cable can cause malfunctions and erratic operation.


Supplemental Tools and Supplies

Tools USCO/ACO RXLCleaner 42E590 42E590Formula A 43P48 8R90175Lint FreeTissues 35P2163 600S4372Film Remover 43P45 8R90176Towel 35P3191 8R90019Lubricant 70P27 70P27

Supplies M750 M760Black Ink Printhead P100 P100Color/Photo Ink Printhead P105 P105Color Ink Cartridges

Black Y100 Y100Cyan Y101 Y101Magenta Y102 Y102Yellow Y103 Y103

Print Drivers and Tour Guides M750 M760Multinational CD-ROM

Print Driver 301K00860 301K00110

Related Information M750 M760Quick Reference Guide (US) 701P31954 701P31954Quick Reference Guide (ACO-Spanish) 701P31956 701P31956Quick Reference Guide (ACO-Portuguese) 701P31957 701P31957Quick Reference Guide (French/Canadian) N/A N/A



DocuPrint M750/M760 5/00 Wiring Data7-1

Section 7Wiring Data

7.1 Electrical Connections..................................................................7-2

7.2 Connector Signals ........................................................................7-3

Wiring Data 5/00 DocuPrint M750/M7607-2

7.1 Electrical Connections

FOR SIGNAL NAMES, REFER TO7.2 CONNECTOR SIGNALS.

IOT

CN2

INTERFACE PWB

CN1

CN8

CN7

CN2CN3

CN4

CN8

CN6

CN7

CONTROL PWB

CN4

CN5

(ONBOTTOM)

CN1

CN3

AC

POWERSUPPLY PS1

PWBPAPER

SENSOR

CN1(24-PINBOARD TOBOARD)

CN2

CARRIAGEMOTORMOT1

CN4(4-PINFLAT

CABLE)

ADVANCEMOTORMOT2

CN5(4-PINFLAT

CABLE)

1 12

CN1(12-PINWIRE

HARNESS)

MAINTENANCEMOTOR

CN6(4-PINWIRE

HARNESS)

MAINTENANCEHOME

SENSOR

CN7(3-PINWIRE

HARNESS)

ILSPWB

CN3(6-PIN

MINIATUREFLAT

CABLE)

BLACK INK HEAD COLOR INK HEAD

FRONT PANEL

INTERFACEPWB

CN4(8-PIN

MINIATUREFLAT

CABLE)

CN2(15-PIN

MINIATUREFLAT

CABLE)

CN3(15-PIN

MINIATUREFLAT

CABLE)

2ND CASSETTE(NOT USED)

CN8(10-PINWIRE

HARNESS)

11 1

27

2

28

1

11

C8

+ +

C25

1

4

1

EXTERNAL PC

CN8RS432

PARALLELCN7USB

EITHERCONNECTION(NOT BOTH)

CONTROLPWB


7.2 Connector SignalsTable 7-1 identifies the Control PWB connector signals and Table 7-2 identifies the Interface PWB connector signals.

TABLE 7.1 Control PWB Connector Signals

CN1 Power CN2 Board-to-Board CN3 ILS PWB

1 +42 vdc 1 Cover open 1 Tank detect

2 +42 vdc 2 n.c. 2 bs cath

3 Gnd 3 Uc dir 3 +5 vdc

4 Gnd 4 Uc ghome 4 Vss

5 +5 vdc 5 Uc ser ndsr 5 Ink remain

6 +5 vdc 6 Uc ser rx 6 Ils/tp cath

7 Vdd 7 Uc ser tx

8 Vdd 8 Uc ser ndtr

9 Vss 9 Nrest out

10 Vss 10 Uc_600dpi

11 Paper detect 11 +5 vdc

12 Cntl +5 vdc

13 Vdd

14 Cntl +5 vdc

15 Vss

16 Vss

17 Hv_cl_out

18 Hv_cl_out

19 Hv_bk_out

20 Hv_bk_out

21 Hvburnb

22 Hvburna

23 Pgnd

24 Pgnd

CN4 Carriage MotorMOT1

CN5 Advance Motor CN6 Maintenance Motor

1 Xm_a 1 Ym_a 1 Mm_a

2 Xm_na 2 Ym_na 2 Mm_na

3 Xm_b 3 Ym_b 3 Mm_b

4 Xm_nb 4 Ym_nb 4 Mm_nb


TABLE 7.1 Control PWB Connector Signals

CN7 Maintenance HomeSensor

CN8 2nd Cassette

1 Cap_an 1 Frame gnd

2 Cap_pos 2 2nd_sol

3 Vss 3 +40 vdc

4 Paper size 2

5 2nd_cassette

6 Vss

7 Vss

8 Vss

9 Jam_detect

TABLE 7.2 Interface PWB Connector Signals

CN1 Board-to-Board CN2 Black head CN3 Color head1 Cover_open 1 Hv_bk_out 1 Hv_cl_out

2 N.C. 2 Pgnd 2 Pgnd

3 Uc_dir 3 Vss 3 Vss

4 Uc_ghome 4 Ph_bs 4 Ph_tcoa

5 Uc_ser_ndsr 5 Ph_bdata 5 Ph_flcr

6 Uc_ser_rx 6 Ph_ben 6 Lg_cl_out

7 Uc_ser_tx 7 Lg_bk_out 7 Ph_aen

8 Uc_ser_ndtr 8 Ph_fclr 8 Ph_adata

9 Nresetout 9 Ph_tcob 9 Ph_bs

10 Uc_600dpi 10 Vss 10 Vss

11 +5 vdc 11 Pgnd 11 Pgnd

12 Cntl +5 vdc 12 Hv_bkk_out 12 Hv_cl_out

13 Vdd 13 Ph_enchb 13 Vss

14 Vdd 14 Vss 14 +5 vdc

15 Vss 15 Ph_enccha 15 Cntl_5v

16 Vss

17 Hv_cl_out

18 Hv_cl_out

19 Hv_bk_out

20 Hv_bk_out

21 Hvburnb

22 Hvburna

23 Pgnd

24 pgnd


TABLE 7.2 Interface PWB Connector Signals

CN4 Front Panel CN7 USB I/O CN8 Parallel I/O1 +5 vdc

2 Fp_ledf2

3 Fp_led1

4 Fp_led0

5 Fp_sw1

6 Fp_sw0

7 Vss

8 Cover_open



Documents

M750 Service Manual