Canon PIXMA MP760 User manual

PIXMA MP760
SERVICE
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 byAuthorized 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
HY8-13A4-000
COPYRIGHT2004 CANON INC. CANON PIXMA MP760 NOV. 2004

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.
Copyright
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.
Copyright © 2004 by Canon Inc.
CANON INC.
Inkjet MFP/FAX Quality Assurance Div.
5-1 Hakusan 7-Chome, Toride-city, Ibaraki 302-8501, Japan

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 Asked Questions) of the 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, Connection
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 - 1
1. MAINTENANCE
1-1 Adjustment, Periodic Maintenance, Periodic Replacement Parts, and
Replacement Consumables by Service Engineer
(1) Adjustment
Adjustment Timing Purpose Tool Approx
time
ALL CLEAR
(EEPROM
initialization)
*1
AtSPCNTBOARDASS’Y
replacement To initialize settings other than the following
-Service/User soft SW
-Various counter
-TYPE Setting
None
To initialize
the settings,
select #8
CLEAR –ALL
in the service
mode
1 min
TYPE settings
(EEPROM
settings)
*1
-AtSPCNTBOARDASS’Y
replacement
-AtexcecutingAllclear
-To set the type
-To set the destination None Select #5
TYPE in the
service mode
Power SW
OFF/ON*1
1 min
Waste ink
counter resetting
(EEPROM
settings)
At bottom case unit
replacement
At ink absorber INK
ABSORBER
(HY7-2885/2886/2887/28
88/2889/2890/2891/2953)
To reset the waste ink
counter.
None
Select #7
PRINTER in
the service
mode,
and input “0”
at #5 INK ABS
CAPA.
1min
Waste ink
counter setting
(EEPROM
initialization)
At SPCNTBOARDASS’Y
replacement Waste ink counter setting None Print out the
EEPROM
information,
and select #7
PRINTER in
the service
mode.
Then, register
at #5 INK ABS
CAPA.
1 imn
CD-R sensor /
automatic print
head alignment
sensor correction
(EEPROM
settings)
(230V only)
At SPCNTBOARDASS’Y
replacement
At carriage unit
replacement
To correct the CD-R and
automatic print head
alignment sensor.
None.
(Correction
performed
through
FACTORY
MODE-[2]PRI
NTER-SHUK
KEN at the
same time as
printing.)
1 min

1 - 2
Adjustment Timing Purpose Tool Approx
time
Print head
alignment
- At print head
replacement
- At SPCNTBOARDASS’Y
replacement
To ensure accurate dot
placement.
None.(Main
body
buttons)
Computer
(settings via
the printer
driver)
2 min
Paper feed motor
position
adjustment*
*2
At paper feed motor unit
replacement
To adjust the belt tension.
(Position the paper
feed motor so that the belt
is stretched tight.)
None
For the
adjustment,
refer to [3-3
Adjustment/Se
ttings
(1) PAPER
FEED
MOTOR
Installation
Adjustment.
2 min
Grease
application
-At carriage unit
replacement
-At chassis' upper gear
replacement
-At LIFT CAM SHAFT
replacement
-To maintain sliding
properties of the carriage,
carriage shaft, and shaft
lift.
-To protect the chassis'
upper gear.
-To LIFT CAM SHAFT
replacement
-FLOIL
KG-107A
-MOLYKOTE
HP300
1 min
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 isreplaced, be sure to select the settings of [#8CLEAR]-[ALL]
and [#5TYPE] in Service Mode, and turn thepower 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.
(2) Periodic maintenance
Adjustment Timing Purpose Tool Approx.
time
None

1 - 3
(3) Periodic replacement parts
Adjustment Timing Purpose Tool Approx.
time
None
(4) Replacement consumables
Adjustment Timing Purpose Tool Approx.
time
None
1-2 Customer Maintenance
Adjustment Timing Purpose Tool
Approx.
time
Print head
alignment At print head replacement. To ensure accurate dot placement. None Main body
buttons
Computer
(automatic
settings
via the printer
driver)
3min
Print head cleaning
When print quality is not satisfying.
To improve nozzle
conditions.
None
Main body
buttons
Computer
(settings via the
printer driver)
1 min
Print head deep
cleaning
When print quality is
not satisfying, and not
improved by print head
cleaning.
To improve nozzle
conditions.
None
Computer
(setting via the
printer driver)
.
2min
Ink tank
replacement
When an ink tank
becomes empty.(No ink
error) - -
2min
Paper feed roller
cleaning
When paper does not
feed properly.
To clean the paper feed
rollers.
None
Main body
buttons
2min
CD-R print position
adjustment
At CD-R printing, when
necessary
To correct CD-R print
position.
None
Computer
(application
software)
2min
Bottom plate
cleaning
When the back side of
the paper is smeared
To clean the platen ribs.
None Computer
(application
software)
1min