Canon MP450, MP170 User Manual

PIXMA MP170 PIXMA MP450

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 by Authorized Service Facilities of Canon U.S.A. Its unauthorized use is prohibited.

PIXMA MP170

PIXMA MP450

SERVICE MANUAL

Revision 0

QY8-13AH-000

COPYRIGHT©2005 CANON INC. CANON PIXMA MP170/PIXMA MP450 082005 XX 0.00-0

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 © 2005 by Canon Inc. CANON INC.

Inkjet Device Quality Assurance Div. 2

451, Tsukagoshi 3-chome, Saiwai-ku, Kawasaki-shi, Kanagawa 212-8530, Japan

I. MANUAL OUTLINE

This manual consists of the following three parts to provide information necessary to service the PIXMA MP170 / MP450:

Part 1: Maintenance

Information on maintenance and troubleshooting of the PIXMA MP170 / MP450

Part 2: Technical Reference

New technology and technical information such as FAQ's (Frequently Asked Questions) of the PIXMA MP170 / MP450

Part 3: Appendix

Block diagrams and pin layouts of the PIXMA MP170 / MP450

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. MAINTENANCE

1-1. Adjustment, Periodic Maintenance, Periodic Replacement Parts, and Replacement Consumables by Service Engineer

1-2. Customer Maintenance

1-3. Product Life

1-4. Special Tools

1-5. Serial Number Location

2. LIST OF ERROR DISPLAY / INDICATIONS

2-1. Operator Call Errors

2-2. Service Call Errors

2-3. Warnings

2-4. Troubleshooting by Symptom

3. REPAIR

3-1. Notes on Service Part Replacement (and Disassembling / Reassembling) 3-2. Special Notes on Repair Servicing

3-3. Adjustment / Settings

(1)Paper feed motor adjustment

(2)Main chassis and carriage rail adjustment

(3)Document pressure sheet adjustment

(4)Grease application

(5)Waste ink counter setting

(6)User mode

(7)Service mode

Service test print

EEPROM initialization

Waste ink counter reset

Destination settings

Button and LCD test

3-4. Verification Items

(1)Service test print

(2)EEPROM information print

Part 2: TECHNICAL REFERENCE

1. NEW TECHNOLOGIES

2. CLEANING MODE AND AMOUNT OF INK PURGED

3. PRINT MODE

3-1. Resolution in Printing via Computer (Print on One or Both Sides of Paper, BK Cartridge, Monochrome Mode)

3-2. Resolution in Printing via Computer (Print on One or Both Sides of Paper, BK and CL Cartridges, Monochrome Mode)

3-3. Resolution in Printing via Computer (Print on One or Both Sides of Paper, BK and CL Cartridges, Color Mode)

3-4. Resolution in Printing via Computer (Print on One or Both Sides of Paper, CL Cartridge, Color or Monochrome Mode)

3-5. Resolution in Borderless Printing (Print on One or Both Sides of Paper, BK and CL Cartridges or CL Cartridge Only, Color or Monochrome Mode)

3-6. Resolution in Direct Printing

3-7. Resolution in Copying (Copy on One or Both Sides of Paper, Color or Monochrome Mode) 4. FAQ (Problems Specific to the MP170 / MP450 and Corrective Actions)

Part 3: APPENDIX

1. BLOCK DIAGRAM

2. CONNECTOR LOCATION AND PIN LAYOUT

2-1. Main Board

2-2. MP450 Operation Panel Board L

2-3. MP450 Operation Panel Board R

2-4. MP170 Operation Panel Board

2-5. Card Slot Board (Card Slot Unit)

2-6. Carriage Board (Print Head Connector)

3. SPECIFICATIONS

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
EEPROM	At logic board ass'y replacement	To initialize settings other than	None.
initialization		the following:
(EEPROM		- USB serial number
settings)		- Destination setting

- Waste ink counter

Approx.

time

1 min.

Destination	At logic board ass'y replacement	To set the destination.	None.	1 min.
settings
(EEPROM
settings)
LCD language	At logic board ass'y replacement	To set the language to be	None.	1 min.
settings		displayed on the LCD.
Waste ink	- At bottom case unit	To reset the waste ink counter.	None.	1 min.
counter	replacement
resetting	MP170: QM2-2800-000
(EEPROM	MP450: QM2-2814-000
settings)	- At ink absorber replacement
	MP170: QY5-0149, QC1-
	6014
	MP450: QY5-0151, QC1-
	6014
Document	- At document cover unit	To adjust the pressure sheet to fit	None.	1 min.
pressure sheet	replacement	in place to the four corners of the
position	- At scanning unit replacement	platen glass when the cover is
adjustment		closed
Print head	- At print head replacement	To ensure accurate dot placement.	- Machine buttons	2 min.
alignment	- At logic board ass'y		- Computer
	replacement		(settings via the
	- At carriage unit replacement		MP driver)
Paper feed	At paper feed motor unit	To adjust the belt tension.	None.	2 min.
motor position	replacement	(Position the paper feed motor so
adjustment*1		that the belt is stretched tight.)
Grease	- At carriage unit replacement	- To maintain sliding properties	- FLOIL KG-	1 min.
application	- At bottom case unit	of the carriage, cap blade unit,	107A (QY9-
	replacement	and eject rollers.	0057)
	- At platen replacement		- MOLYKOTE
	- At eject roller replacement		PG641 (CK-
	- At cap blade unit replacement		0562)
	-

*1: 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.

1-1

(2) Periodic maintenance

No periodic maintenance is necessary.

(3) Periodic replacement parts

There are no parts in this machine that require periodic replacement by a service engineer.

(4) Replacement consumables

There are no consumables that require replacement by a service engineer.

1-2. Customer Maintenance

	Adjustment	Timing	Purpose	Tool	Approx.
					time
	Print head	When print quality is not	To ensure accurate dot	- Machine buttons	3 min.
	alignment	satisfying.	placement.	(automatic
				alignment by
				scanning the head
				alignment sheet)
				- Computer (manual
				alignment via the
				MP driver)
	Print head	When print quality is not	To improve nozzle conditions.	- Machine button	1 min.
	cleaning	satisfying.		- Computer (settings
				via the MP driver)
	Print head deep	When print quality is not	To improve nozzle conditions.	- Machine button	2 min.
	cleaning	satisfying, and not improved by		- Computer (settings
		print head cleaning.		via the MP driver)
	Ink cartridge	When an ink cartridge becomes	-----	-----	2 min.
	replacement	empty. (No ink error)

Paper feed roller	When paper does not feed
cleaning	properly.
Bottom plate	When the back side of the paper
cleaning	is smeared

To clean the paper feed rollers.

To clean the platen ribs.

Machine button	2 min.
- Machine button	1 min.

-Computer (settings via the MP driver)

1-3. Product Life

(1) Machine

Specified print volume (I) or the years of use (II), whichever comes first.

(I) Print volume

		MP170 / MP450
		8,000 pages
Black	1,500 character pattern	4,000 pages
Color	A4, 7.5% duty per color pattern	3,200 pages
	A4, 30 % duty per color pattern	160 pages
	4 x 6, 30 % duty per color pattern	400 pages
	Postcard, 30 % duty per color pattern	240 pages

(II) Years of use

5 years of use

1-2

(2) Ink cartridge (ink tank with nozzles) (target value)

1,500 character pattern

plain paper, standard mode (BK)

ISO JIS-SCID No. 5

plain paper, standard mode (BK)

ISO JIS-SCID No. 5

plain paper, standard mode (CL)

Digital camera 24 images PP-101 4x6

	Standard		High capacity
	BK	CL	BK	CL
	PG-40	CL-41	PG-50	CL-
				51
	490 pages	-	750 pages	-
	760 pages	-	1,170 pages	-
	-	190 pages	-	320
				pages
	-	100 pages	-	180
				pages

1-4. Special Tools

Name	Tool No.	Application	Remarks
MOLYKOTE	QY9-0035-000	To be applied to the chassis.	In common with
PG-641			other models.
FLOIL	QY9-0057-000	To be applied to the sliding portion of	In common with
KG-107A		the carriage, and the platen link.	other models.

1-5. Serial Number Location

On the chassis (visible when the scanning unit is open).

To the table of contents

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<Part 1: 1.MAINTENANCE>

1-3

1-4

MP450: QM2-2814), or

- the ink absorber kit (MP170: QY5-0149

(MP170: QM2-2800

- the bottom case unit

[1700 for the main For main waste ink

waste ink absorber replacement, absorber, 1710 for replace

the platen waste ink absorber]

Warning: The Pressing the OK button The service call error, waste ink absorber will clear the error, and indicating the waste becomes almost enable printing. ink absorber is full, is full. At repair*1: likely to occur soon.

2. LIST OF ERROR DISPLAY / INDICATIONS

Errors and warnings are displayed by the following ways:

1)Operator call errors are indicated by the Alarm LED lit. (In the service mode, the Alarm LED blinks to indicate errors.)

Service call errors are indicated by the number of cycles the Alarm and Power LEDs blink.

2)Errors and warnings are displayed on the LCD on the operation panel.

3)Warnings are displayed on the MP driver Status Monitor.

2-1. Operator Call Errors (by Alarm LED Lit in Orange)

MP450 LCD	MP170 LCD
There is no	LOAD PAPER
paper.
The paper is	PAPER JAMMED
jammed.
Ink has run out.	CHECK INK
Replace the ink	U041
cartridge and
close the cover.
U041
The following	CHECK INK
ink cartridge	U051 / U059
cannot be
recognized.
U051 / U059
The following	CHECK INK
ink cartridge	U052
cannot be
recognized.
U052
The following	CHECK INK
ink cartridge	U053
cannot be
recognized.
U053
The waste ink	WASTE INK
absorber is	NEAR FULL
almost full.

Alarm LED
blinking in
orange (in	Error [Error code]	Solution	Remarks
the service
mode only)
2 times	No paper. (ASF)	Set the paper in the
	[1000]	ASF, and press the OK
		button.
3 times	Paper jam. [1300]	Remove the jammed
		paper, and press the OK
		button.
-	No ink. [1600]	Replace the empty ink	Pressing the OK
		cartridge(s), or press	button will exit the
		the OK button.	error without ink
			cartridge replacement,
			however, ink may run
			out during printing.
5 times	Ink cartridge not	Confirm that the ink
	installed. [1401]	cartridges are for this
	Ink cartridge not	model, install them
	for this model	properly, then close the
	installed. [1485]	scanning unit.
15 times	Ink cartridge not	Re-install the
	installed. [1682]	applicable ink cartridge
		(s) properly, and close
		the scanning unit.
		Or, with the ink
		cartridges installed,
		turn the machine off
		and on again.
4 times	Improper	Re-install the
	installation of an	applicable ink cartridge
	ink cartridge.	(s) properly, and close
	[1687]	the scanning unit.
-

Incompatible device detected.

The following ink may have

run out.

U161

An ink cartridge that was once empty is

installed.

U162

Failed to scan head alignment sheet.

Cover is open.

MP450: QY5-0151)

For platen ink absorber

			replacement,
			replace
			- the ink absorber
			(QC1-6014)
			, and
			- the ink absorber kit
			(MP170: QY5-0149
			MP450: QY5-0151).
INCOMPATIBLE	-	The connected	Remove the cable
CAMERA		digital camera or	between the camera and
		digital video	the machine, press the
		camera does not	Stop/Reset button, then
		support Camera	re-connect the cable.
		Direct Printing.
		[2001]

CHECK INK	-	Remaining ink
U161		amount unknown.
U162		[1685/1686]

A once-used ink cartridge (except the one which has been used until just before replacement) is

installed.

Replace the applicable ink cartridge with a new one, or press the OK button.

Pressing the OK button will exit the error without ink cartridge replacement, however, the function to detect the remaining ink amount is disabled.

HEAD	-	Failed in scanning	Press the OK button to
ALIGNMENT		the print head	exit the error, and do
ERROR		alignment sheet.	the print head
			alignment again (from
			printing of the print
			head alignment sheet),
			while confirming the
			following:
			- Set A4 or LTR size
			plain paper.
			- Confirm that the print
			head alignment sheet
			is printed properly
			(no smear or non-
			ejection of ink).
			- Fill in all the
			applicable boxes in
			the printed sheet.
			- Place the sheet on the
			platen glass in the
			correct position and
			orientation.
COVER IS OPEN	-	Scanning unit	Close the scanning unit.
		open. [1200]

*1: The main waste ink absorber is separate from the platen waste ink absorber. In servicing, replace the waste ink absorber which becomes full.

[See Section 3-3. Adjustment / Settings, (7) Service mode, for details.]

1-5

2-2. Service Call Errors (by Cyclic Blinking in Orange (Alarm LED) and Green (Power LED), or Alarm LED Lit in Orange)

Cycles of blinking in		Solution
orange (Alarm LED) and	Error [Error code]	(Replacement of listed parts, which are
green (Power LED)		likely to be faulty)
2 times	Carriage error [5100]	- Carriage unit (QM2-2136)
		- Timing slit strip film (QC1-6015)
		- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
		- Carriage motor (QM2-3165)
3 times	Paper feed error [6000]	- Timing sensor ass'y (QM2-3167)
		- Timing slit disk film (QC1-4962)
		- Feed roller ass'y (QL2-0905)
		- Platen (QC1-6013)
		- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
		- Paper feed motor (QM2-3166)
4 times	Purge unit error [5C00]	- Carriage unit (QM2-2136)
		- Timing slit strip film (QC1-6015)
		- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
		- Carriage motor (QM2-3165)- Carriage
		motor (QM2-3165)
5 times	ASF (cam) sensor error [5700]	- Drive ass'y (QM2-2130)
		- PE sensor ass'y (QM2-3168)
		- Pressure roller ass'y (QM2-3336)
6 times	Internal temperature error [5400]	- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
7 times	Waste ink absorber full [5B00]*2	Main waste ink absorber:
		- Bottom case unit (MP170 QM2-2800,
		MP450 QM2-2814)*3
		- Ink absorber kit (MP170 QY5-0149,
		MP450 QY5-0151)
		Platen waste ink absorber:
		- Ink absorber (QC1-6014)
		- Ink absorber kit (MP170 QY5-0149,
		MP450 QY5-0151)
8 times	Cartridge temperature rise error [5200]	- Print head
		- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
9 times	EEPROM error [6800]	- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
13 times	Paper feed position error [6B00]	- Paper feed motor (QM2-3166)
		- Paper feed belt (QC1-5194)
		- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
15 times	USB Host VBUS overcurrent [9000]	- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
17 times	Motor driver error [6D00]	- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
20 times	Other hardware error [6500]	- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1
22 times	Scanner error [5010]	- Scanner unit (MP170 QM2-2798, MP450
		QM2-2812)
		- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1

1-6

Continuous alternate	ROM error	- Logic board ass'y (MP170 QM2-3210,
blinking		MP450 QM2-3231)*1
Lights in orange	RAM error	- Logic board ass'y (MP170 QM2-3210,
		MP450 QM2-3231)*1

*1: Before replacement of the logic board ass'y, check the waste ink amount, and re-set the waste ink amount value in the replaced logic board.

[See Section 3-3. Adjustment / Settings, (7) Service mode, for details.]

*2: The main waste ink absorber is separate from the platen waste ink absorber. In servicing, replace the waste ink absorber which becomes full.

[See Section 3-3. Adjustment / Settings, (7) Service mode, for details.]

*3: Reset the waste ink counter when replacing the bottom case unit. The main and platen waste ink counters can be reset separately.

[See Section 3-3. Adjustment / Settings, (7) Service mode, for details.]

2-3. Warnings

Machine (displayed on the LCD):
Displayed warning	Remarks
Low ink
Print head temperature rise	If the print head temperature is high when the scanning unit is opened, the
	warning is displayed.*1
	When the print head temperature falls, the warning is released.
Protection of excess rise of the print head	If the print head temperature exceeds the specified limit, a Wait is inserted
temperature	during printing,

*1: If the warning is displayed, the carriage does not move to the ink cartridge replacement position when the scanning unit is opened.

1-7

2-4. Troubleshooting by Symptom

Symptom The power does not turn on.

The power turns off immediately after power-on.

Strange noise.

Printing stops mid-way.

Nothing is displayed on the LCD.

Faulty operation

Solution	Remarks
Replace the
- AC adapter, or
- logic board ass'y*1.
Remove foreign material, or attach a
removed part if any.
Replace the logic board ass'y*1.

-Confirm the connection of the operation panel, scanner unit, and the logic board ass'y.

-Replace the

-operation panel, or

-logic board ass'y.

A portion of the LCD is not displayed.

Multiple sheets feed.

Paper does not feed.

Paper feed problems

Paper feeds at an angle.

No printing, or no color ejected.

Printing is faint, or white lines appear on printouts even after print head cleaning.

Line(s) not included in the print data appears on printouts.

Paper gets smeared.

A part of a line is missing on printouts.

Unsatisfactory

-Perform the button and LCD test in the service mode, and confirm that the LCD is displayed without any segments missing.

-Confirm the connection of the operation panel, scanner unit, and the logic board ass'y.

-Replace the

-operation panel, or

-logic board ass'y.

Replace the

-drive unit, or

-pressing plate ass'y.

Remove foreign material, or replace the

-drive unit, or

-pressing plate ass'y.

Remove foreign material, or adjust the paper guide, or replace the

-drive unit, or

-pressing plate ass'y.

Replace the

-ink cartridge*2,

-logic board ass'y*1,

-drive unit, or

-cap blade unit.

Remove and re-install the ink cartridges, or replace the

-ink cartridge*2,

-cap blade unit,

-purge unit, or

-logic board ass'y*1.

Feed several sheets of paper, perform bottom plate cleaning, or

clean the paper path with cotton swab or cloth.

Replace the ink cartridge(s)*2.

1-8

print quality

Color hue is incorrect.

Printing is incorrect.

No ejection of black ink.

Graphic or text is enlarged on printouts.

Replace the

- ink cartridge*2, or perform print head alignment.

Replace the logic board ass'y*1. Replace the ink cartridge(s)*2.

When enlarged in the carriage movement direction, clean grease or oil off the timing slit strip film, or replace the

		- timing slit strip film,
		- carriage unit, or
		- logic board ass'y*1.
		When enlarged in the paper feed
		direction, clean grease or oil off the
		timing slit disk film, or replace the
		- timing slit disk film,
		- timing sensor unit, or
		- logic board ass'y*1.
	No scanning.	- Confirm the connection between the
		scanner unit and the logic board ass'y.
		- Replace the
		- scanner unit, or
		- logic board ass'y.
Faulty scanning	Streaks or smear on the scanned	- Clean the platen glass.
	image.	- Confirm the connection between the
		scanner unit and the logic board ass'y.
		- Replace the
		- scanner unit,
		- logic board ass'y, or
		- document pressure sheet.

*1: Before replacement of the logic board ass'y, check the waste ink amount, and re-set the waste ink amount value on the replaced logic board.

[See Section 3-3. Adjustment / Settings, (7) Service mode, for details.]

*2: Replace the print head only after the print head deep cleaning is performed 2 times, and when the problem persists.

To the table of contents

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<Part 1: 2. LIST OF ERROR DISPLAY / INDICATION>

1-9

3. REPAIR

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

Service part

Logic board ass'y MP170: QM2-3210 MP450: QM2-3231

Ink absorber

QC1-6014

Bottom case unit MP170: QM2-2800 MP450: QM2-2814

Ink absorber MP170: QY5-0149 MP450: QY5-0151

Carriage unit

QM2-2136

Paper feed motor unit QM2-3166

Notes on replacement*1

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

-Before replacement, check the waste ink amount, and re-set the waste ink amount data in the replaced logic board ass'y.

[See 3-3. Adjustment / Settings, (7) Service mode, for details.]

Platen waste ink absorber

Adjustment / settings

After replacement:

1.Initialize the EEPROM.

2.Set the waste ink data.

3.Set the destination in the EEPROM.

4.Set the LCD language.

[See 3-3. Adjustment / Settings, (7) Service mode, for details of 1 to 4.]

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

After replacement:

Operation check

-EEPROM information print

-Service test print

-Printing via parallel or USB connection

-Direct printing from a digital camera

-Direct printing from a memory card

-Print Beam printing

-Service test print

1. Reset the platen waste ink

	counter.
	[See 3-3. Adjustment /
	Settings, (7) Service
	mode, for details.]
Main waste ink absorber	After replacement:	- Service test print
	1. Reset the main waste ink	- Printing on thick paper
	counter.
	[See 3-3. Adjustment /
	Settings, (7) Service
	mode.]
	2. Adjust the head-to-paper
	distance.
	[See 3-3. Adjustment /
	Settings, (7) Service
	mode.]

The red screws on both sides of the main chassis securing the carriage shaft are allowed to be loosened only when replacing the carriage or removing the main chassis.

Before removing the screws, mark the original screw position, and re-fasten them

at the original position.

At replacement:

- Printing on thick paper

1.Apply grease to the sliding portions.

[See 3-3. Adjustment / Settings, (4) Grease application.]

2.Adjust the distance between the carriage shaft and the platen.

[See 3-3. Adjustment / Settings, (2) Main chassis and carriage rail adjustment.]

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

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

At replacement:

1. Adjust the paper feed motor.

[See 3-3. Adjustment /

1-10

Document pressure plate ass'y

QM2-2809

Document pressure sheet

QC1-7588

Scanner base unit MP170: QM2-2798 MP450: QM2-2812 Timing slit strip film QC1-4962

Timing slit disk film QC1-4833

*1: General notes:

Settings, (1) Paper feed motor adjustment.]

At sheet or unit replacement:

1. Adjust the document pressure sheet.

[See 3-3. Adjustment / Settings, (3) Document pressure sheet adjustment.]

- Upon contact with the film,	After replacement:	- Service test print
wipe the film with ethanol. 1. Perform the print head
- Confirm no grease is on the	alignment in the user
film. (Wipe off any grease	mode.
thoroughly with ethanol.)

- Do not bend the film

-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, (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 machine to sit for approx. 1 minute (for capacitor discharging 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 becoming 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.Except for carriage replacement, DO NOT loosen the red screws (which secures the carriage shaft positioning) on both sides of the main chassis.

After replacement of the carriage, print on thick paper to confirm that the distance between the carriage shaft and the platen is proper, and there is no contact of the ink cartridges to the paper.

If the ink cartridges contact the paper, adjust the carriage shaft, while referring to [3-3. Adjustment / Settings, (2) Main chassis and carriage rail adjustment.]

To the table of contents

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<Part 1: 3. REPAIR, 3-1>

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3-2. Special Notes on Repair Servicing

(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.

(I) Logic board ass'y, PictBridge connector, and IrDA board wiring

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(II) Card board wiring

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<Part 1: 3. REPAIR, 3-2>

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3-3. Adjustment / Settings

(1) Paper feed motor adjustment

Perform the following adjustments when the paper feed motor unit is replaced: 1) When removing the screws, mark the 6 screw holes.

2)When installing the motor, position each screw to the mark, and fasten them.

3)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.

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.

(2) Main chassis and carriage rail adjustment

[Carriage rail adjustment]

Perform the following adjustments when the carriage unit is replaced:

1) Before loosening the red screws, mark the boss position beside the screw.

2)In attaching the carriage rail, make sure that the boss fits into the hole and to the mark made in step 1), then fasten the screws.

3)Be sure to perform the confirmation test detailed below; confirm that the print quality is proper and the ink cartridges are not contacting the paper.

[Main chassis adjustment]

After installing the main chassis, be sure to perform the confirmation test detailed below; confirm that the print quality is proper and the ink cartridges are not contacting the paper.

<Confirmation test>

Using Photo Paper Pro, and with the paper thickness lever set to the left position (normal position), print an image and confirm that the print quality is proper, and the ink cartridges are free from contacting the paper.

If the print quality is not proper, or an ink cartridge contacts the paper, adjust the head-to-paper distance in the following procedures:

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