Canon Pixma MP760 Service Manual

PIXMA MP760

SER VICE MANUAL

Canon

Copyright 2005, Canon U.S.A. This technical publication is the proprietary and confidential information of Canon U.S.A. which shall be retained for reference purposes by Authorized Service Facilities of Canon U.S.A. Its unauthorized use is prohibited.

PIXMA MP760

SERVICE MANUAL

REVISION 0

PIXMA MP760 H12-4602 120V USA PIXMA MP760 H12-4603 230V EMB PIXMA MP760 H12-4604 230V GB PIXMA MP760 H12-4605 230V EUM PIXMA MP760 H12-4606 120V CND PIXMA MP760 H12-4608 230V AUS PIXMA MP760 H12-4609 230V AE

Scope

This manual has been issued by Canon Inc., to provide the service technicians of this product with the information necessary for qualified persons to learn technical theory, installation, maintenance, and repair of products. The manual covers information applicable in all regions where the product is sold. For this reason, it may contain information that is not applicable to your region.

Revision

This manual could include technical inaccuracies or typographical errors due to improvements or changes made to the product. When changes are made to the contents of the manual, Canon will release technical information when necessary. When substantial changes are made to the contents of the manual, Canon will issue a revised edition.

The following do not apply if they do not conform to the laws and regulations of the region where the manual or product is used:

Trademarks

Product and brand names appearing in this manual are registered trademarks or trademarks of the respective holders.

All rights reserved. No parts of this manual may be reproduced in any form or by any means or translated into another language without the written permission of Canon Inc., except in the case of internal business use.

I. MANUAL OUTLINE

This manual consists of the following three parts to provide information necessary to service the PIXMA MP760:

Part 1: Maintenance

Information on maintenance and troubleshooting of the PIXMA MP760

Part 2: Technical Reference

New technology and technical information such as FAQ's (Frequently Ask ed Questions) of th e PIXMA MP760

Part 3: Appendix

Block diagrams and pin layouts of the PIXMA MP760

Reference:

This manual does not provide sufficient information for disassembly and reassembly procedures. Refer to the graphics in the separate Parts Catalog.

II. TABLE OF CONTENTS

Part 1 : MAINTENANCE

1 - 1 1. MAINTENANCE 1 – 1 1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement

Consumables by Service Engineer 1 - 3 1-2. Customer Maintenance 1 - 3 1-3. Product Life 1 - 4 1-4. Special Tools 1 - 5 1-5. Serial Number Location 1 - 6 2. LIST OF ERROR DISPLAY / INDICATION 1 - 6 2-1. Users Error Messege 1 - 9 2-2. New Error Codes and Recovery Methods 1 - 11 2-3. Warnings 1 - 11 2-4. Troubleshooting by Symptom 1 - 16 3. REPAIR 1 - 16 3-1. Notes on Service Part Replacement (and Disassembling / Reassembling) 1 - 19 3-2. Special Notes on Repair Servicing 1 - 19

3-2-1 Flexible Cable and Harness Wiring, Connectio n

1 - 21 3-3. Adjustment / Settings 1 - 21 3-3-1 Paper Feed Motor Adjustment 1 - 22 3-3-2 Gear Phase Adjustment 1 - 24 3-3-3 Lift Cam Shaft Ass’y Adjustment 1 - 25 3-3-4 Solenoid Cam Spring Location 1 - 25 3-3-5 Carriage Shaft Clip Location 1 - 26 3-3-6 White Sheet Location 1 - 28 3-3-7 Grease Application 1 - 30 3-3-8 Waste Ink Counter Setting 1 - 30 3-4. User Data Flow 1 - 33 3-5. Service Switches 1 - 33 3-5-1 Hardware Switches 1 - 33 3-5-2 Service Data Setting 1 - 34 3-5-3 Service Data Registration / Setting Method 1 - 35 3-5-4 Service Data Flowchart 1 - 39 3-5-5 Explanation of service data 1 - 40 3-5-6 New SSSWs / parameters added to this model 1 - 42 3-5-7 SSSW Default Setting 1 - 60 3-6. Test Mode / Factory Mode 1 - 60 3-6-1 Test Mode / Factory Mode Overview 1 - 61 3-6-2 Test Mode Menu 1 - 62 3-6-3 Factory Mode 1 - 63 3-6-4 Operation Panel Test 1 - 64 3-6-5 Print Test 1 - 66 3-6-6 CD-R Calibration (230V only) 1 - 66 3-6-7 IRDA test 1 - 66 3-7. Upgrading the version of SPCNT Flash ROM 1 - 67 3-8. Verification Items

1 - 67 3-8-1 EEPROM information print 1 - 69 4. Cleaning Your Machine 1 - 69 4-1 Caution 1 - 69 4-2 Cleaning the Exterior 1 - 69 4-3 Cleaning the Scan area 1 - 70 4-4 Cleaning the Interior 1 - 70 4-5 Cleaning the Paper Feed Rollor 1 - 71 4-6 Cleaning the Bottom Plate 1 - 72 5. Transportation

Part 2: TECHNICAL REFERENCE

2 - 1 1. New Technologies 2 - 3 2. Cleaning Mode and Amount of Ink Purged 2 - 5 3. Print Mode 2 - 9 4. FAQ (Problems Specific to the MP760 and Corrective Actions)

Part 3 : APPENDIX

3 - 1 1. Wiring Diagram 3 - 2 2. Specification

Part 1

Maintenance

1. MAINTENANCE

1-1 Adjustment, Periodic Maintenance, Periodic Replacement Parts, and

Replacement Consumables by Service Engineer

(1) Adjustment

Adjustment Timing Purpose Tool

ALL CLEAR (EEPROM initialization) *1

TYPE settings (EEPROM settings) *1

Waste ink counter resetting (EEPROM settings)

Waste ink counter setting (EEPROM initialization)

CD-R sensor / automatic print head alignment sensor correction (EEPROM settings) (230V only)

At SPCNT BOARD ASS’Y replacement

-At SPCNT BOARD ASS’Y replacement

- At excecuting All clear

At bottom case unit replacement At ink absorber INK ABSORBER (HY7-2885/2886/2887/28 88/2889/2890/2891/2953)

At SPCNT BOARD ASS’Y replacement

At SPCNT BOARD ASS’Y replacement At carriage unit replacement

To initialize settings other than the following

-Service/User soft SW

-Various counter

-TYPE Setting

-To set the type

-To set the destination

To reset the waste ink counter.

Waste ink counter setting None

To correct the CD-R and automatic print head alignment sensor.

None To initialize the settings, select #8 CLEAR –ALL in the service mode

None Select #5 TYPE in the service mode

Power SW OFF/ON*1

None Select #7 PRINTER in the service mode, and input “0” at #5 INK ABS CAPA.

Print out the EEPROM information, and select #7 PRINTER in the service mode. Then, register at #5 INK ABS CAPA.

None. (Correction performed through FACTORY MODE-[2]PRI NTER-SHUK KEN at the same time as printing.)

Approx time

1 min

1min

1 imn

1 min

1 - 1

Adjustment Timing Purpose Tool

Print head alignment

Paper feed motor position adjustment*

Grease application

Note: DO NOT loosen the red screws on both sides of the main chassis, securing the carriage shaft

positioning.

*1: When SPCNT BOARD ASS’Y is replaced, be sure to select the settings of [#8CLEAR]-[ALL]

and [#5TYPE] in Service Mode, and turn the power OFF/ON with the Power button (Software Power: OFF/ON). DO NOT turn the power OFF/ON by removing and inserting the power code (Hardware Power: OFF/ON). In this case, data may not be written correctly.

*2: Red screws of paper feed motor

The red screws securing the paper feed motor may be loosened only at replacement of the paper feed motor unit.

- At print head replacement

- At SPCNT BOARD ASS’Y replacement

At paper feed motor unit replacement

-At carriage unit replacement

-At chassis' upper gear replacement

-At LIFT CAM SHAFT replacement

To ensure accurate dot placement.

To adjust the belt tension. (Position the paper feed motor so that the belt is stretched tight.)

-To maintain sliding properties of the carriage, carriage shaft, and shaft lift.

-To protect the chassis' upper gear.

-To LIFT CAM SHAFT replacement

None.(Main body buttons) Computer (settings via the printer driver)

None For the adjustment, refer to [3-3 Adjustment/Se ttings (1) PAPER FEED MOTOR Installation Adjustment.

-FLOIL KG-107A

-MOLYKOTE HP300

Approx time

2 min

1 min

(2) Periodic maintenance

Adjustment Timing Purpose Tool Approx.

time

None

1 - 2

(3) Periodic replacement parts

Adjustment Timing Purpose Tool Approx.

None

(4) Replacement consumables

Adjustment Timing Purpose Tool Approx.

None

1-2 Customer Maintenance

time

Adjustment Timing Purpose Tool

Print head alignment

Print head cleaning When print quality is

Print head deep cleaning

Ink tank replacement

Paper feed roller cleaning

CD-R print position adjustment

Bottom plate cleaning

At print head replacement.

not satisfying.

When print quality is not satisfying, and not improved by print head cleaning.

When an ink tank becomes empty.(No ink error) When paper does not feed properly.

At CD-R printing, when necessary

When the back side of the paper is smeared

To ensure accurate dot placement.

To improve nozzle conditions.

- -

To clean the paper feed rollers.

To correct CD-R print position.

To clean the platen ribs. None

None Main body buttons Computer (automatic settings via the printer driver)

None Main body buttons Computer (settings via the printer driver)

None Computer (setting via the printer driver) .

None Main body buttons None Computer (application software)

Computer (application software)

Approx.

time

3min

1 min

2min

1min

1 - 3

1-3 Product Life

(1) Main body

Specified print volume (a), (b), or the years of use (c), whichever comes first. (a) Scanning Section: 15,000 pages (b) Printing Section: 18,000 pages Copy Print Bk

1,500 character pattern + Post card

3,420 pages 3,960 pages

Address printing

1,500 character pattern - -

Color

(2) Ink tank

BCI-3eBK: 900 pages (JEIDA ST D pat t e rnJ1 , pl ain paper standerd mode) 740 pages (Black 1,500 character pattern, plain paper / standard mode) 1,300 pages (ISO JIS-SCID No. 5 / plain paper / standard mode) BCI-6C: 550 pages (ISO JIS-SCID No. 5 / plain paper / standard mode)

A4, 7.5% duty per color pattern 2,520 pages 2,880 pages A4, photo, borderless printing 180 pages 360 pages L, photo, borderless printing 1,080 pages 1,980 pages Postcard, photo, borderless printing 360 pages 1,260 pages

5 years of use

BCI-6M: 430 pages (ISO JIS-SCID No. 5 / plain paper / standard mode) BCI-6Y: 360 pages (ISO JIS-SCID No. 5 / plain paper / standard mode) BCI-6BK: 2,000 pages (ISO JIS-SCID No. 5 / plain paper / standard mode)

1-4 Special Tools

Name Tool No. Application Remarks MOLYKOTE

HP300 FLOIL KG-107A QY9-0057-000 To be applied to the sliding portion of the

CK-8012-000 To be applied to the chassis' upper gear,

and to the sliding portion of the shaft lift.

carriage and the bearing portion of the carriage shaft.

New

In common wit other models.

1 - 4

1-5 Serial Number Label Location

On the right side of the backside in the bottom case (close to the rating plate)

Figure1-1 Serial Number Label Location

1 - 5

2. LIST OF ERROR DISPLAY / INDICATION

User error messages

Look for the applicable error message and execute the appropriat e countermeasures.

Error Codes

As for the causes and countermeasures, only the error codes that are newly incorporated in the unit remedies unique to the product are included in New Error Codes and Recovery Methods. For the causes and countermeasures of other error codes, refer to the separate G3/G4 Facsimile Error Code List (Rev. 2).

Service error code output

When service data #1 SSSW SW01 Bit0 is set to “1”, the following service error codes are displayed when an error occurs.

2-1 User’s error messege "Print head does not work. Clear foreign object from print head. Turn off and on"

Printing position correction failed

Cause: Carriage movement prevented by one of the following.

Damaged shaft. Parts deformed. (Carriage or guide frame) Insufficient grease.

Solution: Replace the shaft.

Replace the deformed parts. Apply more grease.

Cause: Bi-directional print displacement correction failed because the carriage motor is

out of step, or some similar reason.

Solution: Replace the carriage motor.

Home position error

Cause1: Tried to stop the carriage unit that has been moving or to move the carriage unit at a pouse by

force. Solution1: Do not touch the carriage unit other than cartridge replacement position. Cause2: Foreign body in carriage section. Solution2: Open flatbed ass’y and remove the foreign body . Cause3: Loose carriage belt. Solution3: Replace carriage unit Cause4: Carriage motor does not work. Solution4 (1) Switch power OFF/ON. (2) Replace carriage motor. Cause5: The position of the carriage cannot be detected (due to smears on the carriage

encoder film or SPCNT board failure). Solution5: (1) Switch power off/on. (2) Wipe the carriage encoder film with a cloth soaked with alcohol. (3) Replace the carriage encoder film.

(4) Replace the SPCNT board.

1 - 6

Note:

This error message means the same as service error codes ##338 and ##340. When this error occurs in this model, it is not treated as a service error, but as a user error, and the error message is displayed.

“Scanning Unit (Printer Cover) is open.”

Cause: You opened the scanning unit (printer cover) during an operation. Solution: Close the scanning unit (printer cover). Cause: Damaged scanner open arm ass’y, damaged scanner sensor arm, or SPCNT board ass’y failure. Solution: Replace the scanner open arm ass’y, replace the scanner sensor arm, or replace the SPCNT board

ass’y.

“The paper is jammed. Clear the paper and press [OK].”

Cause: The paper is jammed. Solution: Clear the paper and press [OK].

“Error Turn the machine off and on”

Cause: The printer’s internal unit has malfunctioned. Solution: Clear the paper.

Press [OK]

Reattachment the Print head. Switch power off/o n.

Check the service error code and refer to an appropriate solution.

“The machine's memory is full. Delete documents, or print from PC if the data is image.”

Cause: The machine’s memory is full because you tried to copy a very detailed document. Solution: Divide the document and copy each part separately.

“Cannot write to memory card. (displayed as [write-protect error]”

Cause: The memory card inserted in the card slot is write-protected. Solution: Release the write protection of the memory card. Cause: The setting [Memory Card Protect] is set to [ON]. Solution: Set [Memory Card Protect] to [OFF], and connect the USB cable again.

“?” Cannot read from memory card.

Cause: Th e question mark [?] indicates that the data may be a JPEG file containing an image with the

resolution size: 6400 dpi x 6400 dpi or greater. If the data is not in the JPEG format, it is not included in the number of images.

Solution: Print from the computer.

1 - 7

“Error during scanning memory card. Pull the card and turn the machine off and on.”

Cause: Data in the memory card cannot be accessed. Solution: Check the data in the memory card from a digital camera.

Check the connection between the multi-card board and the SPCNT board.

Replace the Multi Cards Board.

Replace the SPCNT board.

“There is no images in memory card”

Cause: The image data in the memory card are not in the file formats that are valid in this machine. Solution:

Print from the computer.

1 - 8

2-2 New Error Codes and Recovery Methods

Those error codes that have been added starting with the product and those error codes for which remedies unique to the product are offered are shown together with causes and remedies, where applicable.

##341 Maintenance jet waste ink capacity full

Solution: Replace the waste ink absorber as follows in the error occurs: (1) Select [7] PRINTER TEST in the service mode and select [5] INK ABS CAPA under the [7], then

input “0”.

(2) Check to make sure that no image exist in memory; then, turn off the power, remove the appropriate

parts, and replace the waste ink absorber.

##342 Cleaning absorption waste ink capacity full

Solution: Replace the waste ink absorber as follows in the error occurs:

(1) Select [7] PRINTER TEST in the service mode and select [5] INK ABS CAPA under the [7], then

input “0”.

(2) Check to make sure that no image exist in memory; then, turn off the power, remove the appropriate

parts, and replace the waste ink absorber.

##343 Ink detection waste ink capacity full

Solution: Replace the waste ink absorber as follows in the error occurs: (1) Select [7] PRINTER TEST in the service mode and select [5] INK ABS CAPA under the [7], then

input “0”.

(2) Check to make sure that no image exist in memory; then, turn off the power, remove the appropriate

parts, and replace the waste ink absorber.

##352 Printer control EEPROM head information error

Cause: The EEPROM for printer control is faulty. Solution: (1) Turn off and then on the power. (2) Turn off the power, and replace the printhead. (3) Replace the SPCNT board.

NOTE:

In the presence of ##352, the carriage unit will not move to printhead replacement position even when the inner cover is opened. Moreover the carriage will not be locked in position even when the power is turned off. When replacing the printhead, be sure to turn off the power, and draw out the carriage before replacement.

1 - 9

##355 Lit-up motor for CD-R print malfunctioned

Cause: In performing a CD-R print, the motor to lift up the carriage shaft is malfunctioned. Solution:(1) Turn off and then on the power.

(2) Check the connection from the SHEET FEED unit to the SPCNT board ass’y (JPM1). (3) Replace the SHEET FEED ASS’Y. (4) Replace the SPCNT board.

##356 ASF cam sensor error

Cause: An error occurs at the ASF cam sensor in the ASF (Auto Sheet Feeder) unit. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

(2) Replace the SHEET FEED ASS’Y.

##357 ASF paper feed (AP) position error

Cause: An error occurs at the AP positioning in the ASF (Auto Sheet Feeder) unit. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

(2) Replace the SHEET FEED ASS’Y. (3) Replace the SPCNT board.

##358 USB Host VBUS overcurrent error

Cause: Overcurrent is applied to the VBUS signal of USB. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

(2) Replace the SPCNT board.

##359 Paper feed position error

Cause: An error occurs at the paper feed positioning. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

(2) Replace the SHEET FEED ASS’Y. (3) Replace the SPCNT board.

##360 Paper feed cam sensor error

Cause: An error occurs at the paper feed cam sensor. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

(2) Replace the SHEET FEED ASS’Y (3)

Replace the SPCNT board.

##361 Valve sensor error

Cause: An error occurs at the valve sensor in the Purge unit. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

Replace the SPCNT board.

(2)

1 - 10

##362 Motor driver malfunctioned error

Cause: The motor driver is malfunctioned due to heating, etc. Solution: (1) To reboot, press [OK] button or turn off and then on the power.

Replace the SPCNT board.

(2)

2-3 Wa rnings

Main body (no LCD indications)

Displayed warning Remarks None None

2-4 Troubleshooting by symptom

Symptom Solution Remarks General

errors

The unit does not power on.

Nothing is displayed.

(1) Check the power cord connection. (2) Check the connection between the SPCNT board (JPSU1) and power supply unit. (3) Replace the power supply unit.

(1) Check the connection between the Operation panel unit and SPCNT board (JPANEL1). (2) Replace the SCANNER unit. (3) Replace the SPCNT board.

Part of the Viewer does not display anything.

(1)If the test mode can be used, check for faulty dot in Viewer (2) Check the connection between the Operation panel unit and SPCNT board (JPNL1). (3) Replace the SCANNER UNIT. (4) Replace the SPCNT board

ass’y

The keys do not work.

(1) Check the connection between the SCANNER UNIT and SPCNT board (JPNL1). (2) Replace the SCANNER UNIT. (3) Replace the SPCNT board.

1 - 11

Symptom Solution Remarks

Printing problems

The paper is not feed properly. (The Paper feed motor does not run.)

1) Check the connection from the sheet feed unit to the SPCNT board assy (JPM1). (2) Replace the sheet feed unit. (3) Replace the SPCNT board ass’y.

The paper is not picked up from the auto sheet feeder.

(1) Check the foreign matter in the paper feed section. (2) Check the connection SHEET FEED UNIT to the SPCNT board ass’y (JPM1). (3) Replace the SHEET FEED UNIT. (4) Replace SPCNT board ass’y.

The carriage motor does not run.

(1) Check the connection from the SHEET FEED unit to the SPCNT board ass’y (JPM1). (2) Replace the SHEET FEED unit. (3) Replace the SPCNT board ass’y.

Carriage error (The carriage comes into contact with the push-on plates at the left and right sides, resulting in noise.)

(1) Check if grease adheres to the carriage encoder film. (2) Using lint-free paper impregnated with alcohol, wipe the carriage encoder film with care so as not to scratch the film. (3) If a lot of grease adheres to the carriage, replace the carriage board because grease might be spread to the sensor on the carriage board. (4) Replace the carriage encoder film.

1 - 12

Symptom Solution Remarks

Printing Quality Error

• The printer does not at all.

• Printing stops midway.

• Certain colors are not printed.

Blotches appear Blank ink appear

(1) Remove the printhead and re-install it. (2) Carry out nozzle cleaning on the printhead five times with the cleaning operation, than visually cheek the test print for non-discharge of ink from nozzle. (Fig. 1-2) (3) Remove and reinstall the printhead. (4) Replace the appropriate ink tank. (5) Replace the printhead. (6) Replace the SPCNT board ass’y. (7) Replace the purge unit.

(1) Remove and reinstall the printhead. (2) Carry out nozzle cleaning on the printhead five times with the cleaning operation, than visually cheek the test print for non-discharge of ink from nozzle. (Fig. 1-2) (3) Perform print head refreshing, and print out Nozzle check pattern. Visually check the test print for non-discharge of ink from nozzle. (Fig. 1-2) (4) Replace the appropriate ink tank. (5) Replace the printhead. (6) Check the connection of the carriage ribbon cable and the SPCNT board. (JHD1, JHD2) (7) Replace the carriage unit. (8) Replace the SPCNT board. (9) Replace the purge unit.

1 - 13

Symptom Solution Remarks

The Scanning Image Is Abnormal

Faulty CD-R (230V only)

Other

Nothing is printed.

The image has vertical stripes.

The halftone image contains black dots.

The CD-R Tray is not recognized.

(As-received failure) The display appers in English.

(1) Check the connection between the contact sensor and SPCNT board (JCCD1). (2) Replace the SCANNER unit. (3) Replace the SPCNT board ass’y.

(1) Clean the Document glass. (2) Check the connection between the contact sensor and SPCNT board (JCCD1). (3) Replace the SCANNER unit. (4) Replace the SPCNT board ass’y. (1) Clean the Document glass. (2) Check the connection between the SCANNER unit and SPCNT board (JCCD1). (3) Replace the SCANNER unit. (4) Replace the SPCNT board ass’y.

(1) Remove the CD-R Tray, and place the CD-R Tray again. (2) Check the connection between the CARRIAGE UNIT and SPCNT board ASS’Y (JHD1, JHD2). (3) Replace the CARRIAGE UNIT. (4) Replace the SPCNT BOARD ASS’Y.

Select the settings of [#8CLEAR]-[ALL] and [#5TYPE] (Type setting) in Service Mode, and turn the power OFF/ON with the power button (Software Power: OFF/ON).

1 - 14

Missing dots

Unstable printing Splashed dots

Figure1-2 Defective Pattern (Sample)

1 - 15

3. REPAIR

3-1 Notes on Service Part Replacement (and Disassembling / Reassembling)

Service part Notes on replacement*1

SPCNT BOARD ASS’Y (HY7-3223)

INK ABSOBER (HY7-2885/2886/2887/ 2888/2889/2890/2891/

2953) CARRIAGE UNIT

(HY7-2862)

P APER FEED MOT OR (HY7-2912)

- Before removal of the SPCNT board ass'y, remove the power cord, and allow for approx. 1 minute (for discharge of capacitor's accumulated charges), to prevent damages to the SPCNT board ass'y.

- Before replacement, check the waste ink amount (by service test print or EEPROM information print).

Apply grease to the sliding portions.

[See 3-3. Adjustment /

Settings, 3-3-7 Grease application.]

-The red screws securing the paper feed motor are allowed to be loosened. (DO NOT loosen any other red screws.)

Adjustment / settings Operation check

After replacement:

1.Clear ALL *2 (Initialize the EEPROM.)

2.TYPE setting *2

Power SW OFF/ON

3. Reset the waste ink counter.

4. Service data setting

5. CD-R sensor calibration

[See 3-6 Test mode 3-6-5 CD-R Calibration]

[See 3-6. Service SW, for details of 1 to 4]

6. Perform the print head

alignment in the user mode.

- EEPROM information print

- Service test print

-Copy

- Printing via parallel or USB connection

- Direct printing from a digital camera

After replacement:

1. Reset the waste ink counter.

[See 3.3. Adjustment / Settings, 3-3-8 Waste ink counter setting]

- EEPROM information print

1. CD-R sensor calibration

[See 3-6-5. CD-R Calibration]

2. Perform the print head

alignment in the user mode.

-Service test print (Confirm CD-R and automatic print head alignment sensor correction.)

1. Adjust the paper feed motor.

[See 3-3. Adjustment / Settings, 3-3-1 Paper feed motor adjustment.]

1 - 16

Service part Notes on replacement*1 Adjustment / settings*2 Operation check

LIFT CAM SHAFT (HY7-2902)

TIMING SLIT STRIP FILM (HY7-2863)

TIMING SLIT DISK FILM (HY7-3083)

- Grease application to the sliding portions

[See 3-3. Adjustment /

Settings, 3-3-7 Grease application.]

Upon contact with the film,

wipe the film with ethanol.

- Confirm no grease is on the film. (Wipe off any grease thoroughly with ethanol.)

- Do not bend the film

After replacement:

1. LIFT CAM SHAFT phase adjustment

See 3-3. Adjustment / Settings, 3-3-3 LIFT CAM SHAFT.]

After replacement:

1. Perform the print head alignment in the user mode.

Service test print

-Service test print

PRINT HEAD (QY6-0049)

After replacement:

1. Perform the print head alignment in the user mode.

-Service test print

PAPER EXIT TRAY ASS’Y (HY7-3220)

LEFT COVER (HY7-3219)

RIGHT COVER (HY7-3221)

Align the left side of the tray with the T-part’ angle of Solenoid Cam Gear to insert (after removing the tray, the angle returns to almost vertical by the force exerted by the spring). Then pull the tray open a little (approx. 30 – 60 degrees) and move it toward the left side to insert the other side of the shaft (see the photo in Figure 1-7). Align the two claws of the bottom frame with the claws of the left cover (see the photo in Figure 1-8).

Align the three claws of the

bottom frame with the claws of the right cover (see the photo in Figure 1-9).

*1: General notes:

- Make sure that the flexible cables and wires in the harness are in the proper position and connected correctly. [See 3-2. Special Notes on Repair Servicing, 3-3-1 Flexible cable and harness wiring, connection, for details.]

- Do not drop the ferrite core, which may cause damage.

- Protect electrical parts from damage due to static electricity.

- Before removing a unit, after removing the power cord, allow the printer to sit for approx. 1 minute (for capacitor dischar ging to protect the logic board ass'y from damages).

- Do not touch the timing slit strip film and timing slit disk film. No grease or abrasion is allowed.

- Protect the units from soiled with ink.

- Protect the housing from scratches.

- Exercise caution with the red screws, as follows: i. The red screws of the paper feed motor may be loosened only at replacement of the paper feed motor unit (DO NOT loosen them in other cases). ii. DO NOT loosen the red screws on both sides of the main chassis, securing the carriage shaft positioning (they are not

*2: When SPCNT BOARD ASS’Y is replaced, be sure to select the settings of [#8CLEAR]-[ALL] and [#5TYPE] in Service Mode,

adjustable in servicing).

and turn the power OFF/ON with the Power button (Software Power: OFF/ON). DO NOT turn the power OFF/ON by removing and inserting the power code (Hardware Power: OFF/ON). In this case, data may not be written correctly.

1 - 17

Figure1-3 Solenoid Cam Gear

To attach the PAPER EXIT TRA UNIT, align the tray with the T-

art of the Solenoid Cam Gea to insert. Then pull the tray ope a little and move it toward the lef side to insert the other side of the shaft.

The following photos show the left and the right cover claws. Align them for assembling.

Figure1-4 LEFT COVER Figure1-5 RIGHT COVER

1 - 18

3-2 Special Notes on Repair Servicing

3-2-1 Flexible cable and harness wiring, connection

Be careful of wiring of the flexible cables and harness. Improper wiring or connection may cause breakage of a line, leading to ignition or emission of smoke.

(1) (2)

(3)

(4)

Figure 1-6 Flexible cable and harness wiring, connection

(1) IRDA board wiring

IRDA board

Figure 1-7 Cable Guide wiring

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(2) SPCNT BOARD ASS’Y wiring

SPCNT BOARD (JPSU1) POWER SUPPLY UNIT

SPCNT BOARD(JIRD1) IRDA BOARD ASS’Y

SPCNT BOARD (JSOL1) SOLENOID

SPCNT BOARD (JLCD1)SCANNER UNIT

SPCNT BOARD (JHD1/JHD2) CARRIAGE UNIT

SPCNT BOARD (JPNL1) SCANNER UNIT

SPCNT BOARD (JLMP1)SCANNER UNIT

SPCNT BOARD (JFBM1)-

SPCNT BOARD (JCDR1)Memory card BOARD

SPCNT BOARD (JDSC1) - Memory card BOARD

SPCNT BOARD (JVLV1) PURGE UNIT

SPCNT BOARD (JINK1) PLATEN UNIT

SPCNT BOARD (JMC1) PURGE UNIT

Figure 1-8 SPCNT BOARD ASS’Y wiring

SPCNT BOARD (JEXT1) RELEY BOARD ASS’Y

SCNT BOARD (JFAU1) FAU

SPCNT BOARD (JPM1) CARRIAGE/ LF/AP/PAPER FEED MOTOR

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(3) RELAY BOARD ASS’Y wiring

RELAY BOARD (JSNS2) LF Encoder / PE Sensor

SPCNT BOARD (JEXT1) RELAY BOARD (JREL)

RELAY BOARD (JSNS1) - PF Encoder / PF PE Encoder / AP Encoder

Figure1-9 RELAY BOARD ASS’Y wiring

(4) POWER SUPPLY UNIT wiring

POWER SUPPLY (CN4) SPCNT BOARD (JPSU1)

Figure1-10 POWER SUPPLY UNIT wiring

REGULATOR POWER SUPPLY (CN6)

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3-3 Adjustment / Settings

3-3-1 PAPER FEED MOTOR Adjustmen t

Perform the following adjustments when the paper feed motor unit is replaced:

1) When attaching the motor, fasten the screws so that the belt is properly stretched (in the direction indicated by the blue arrow in the figure below).

2) After replacement, be sure to perform the service test print, and confirm that no strange noise or faulty print operation (due to dislocation of the belt or gear, or out-of-phase motor, etc.) occurs.

Red screws securing the PAPER FEED MOTOR

Figure 1-11 PAPER FEED MOTOR Adjustment

Note:

The red screws securing the paper feed motor may be loosened only at replacement of the paper feed motor unit. DO NOT loosen them in other cases.

3-3-2 CARRIAGE SHAFT gear ad justment

In installing a carriage shaft, the gear phase should be adjusted.

Insert the metallic pin shown below to the hole in the PURGE UNIT (see the photo (a) below) (until

(1) it reaches the end).

[Metallic pin]

- Diameter: 2.0 mm or less, and Length: 20.0 mm or more (Use “CARRIAGE SHAFT L SPRING: HY7-2867”, or an unbended clip can be used in place of the

pin.)

(2) With the metallic pin inserted, turn the LIFT GEAR 2 clockwise (in the direction indicated by the

arrow in the photo (b) below) until it reaches the end. (Stop when it cannot turn farther any more.) Under the conditions above, confirm that the ASF ARM LOCK LEVER is located upward (see Photo (c)) and the capping section is located at the capping position (see Photo (d)).

2.0mm or less 20.0mm or more

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