Epson L1800 Service Manual

SERVICE MANUAL

Color Inkjet Printer

L1800

Confidential

SEIJ13-007

Notice:

All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

The contents of this manual are subject to change without notice.

All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.

The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.

EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice:	Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their
	respective owners. EPSON disclaims any and all rights in those marks.

Copyright © 2014 SEIKO EPSON CORPORATION.

Printer CS Quality Assurance Department

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PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.

DANGER	Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by
	DANGER Headings.
WARNING	Signals a precaution which, if ignored, could result in damage to equipment.

The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.

DANGER

1.ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.

2.NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3.WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

4.WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.

WARNING

1.REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.

2.MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3.ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4.IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5.REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

6.WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.

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About This Manual

This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.

Manual Configuration

This manual consists of six chapters and Appendix.

CHAPTER 1.PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2.TROUBLESHOOTING

Describes the step-by-step procedures for the troubleshooting.

CHAPTER 3.DISASSEMBLY / ASSEMBLY

Describes the step-by-step procedures for disassembling and assembling the product.

CHAPTER 4.ADJUSTMENT

Provides Epson-approved methods for adjustment.

CHAPTER 5.MAINTENANCE

Provides preventive maintenance procedures and the lists of Epsonapproved lubricants and adhesives required for servicing the product.

APPENDIX Provides the following additional information for reference:

• Connector Summary

Symbols Used in this Manual

Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages.

Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality.

Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment.

May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action.

Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.

Indicates that a particular task must be carried out according to a certain standard after disassembly and before re-assembly, otherwise the quality of the components in question may be adversely affected.

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		Revision Status
Revision	Date of Issue	Description
A	February 10, 2014	First Release

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L1800

Revision A

CONTENTS

Chapter 1 Product Description
1.1 Operation Buttons & Indicators (LEDs)................................................................	4
1.1.1 Operation Buttons ........................................................................................	4
1.1.2 Indicators (LEDs) ........................................................................................	4
1.1.3 Operation Buttons & LEDs Functions ........................................................	4
1.1.4 Errors & Remedies ......................................................................................	6
Chapter 2 Troubleshooting
2.1 Overview ...............................................................................................................	8
2.1.1 Troubleshooting according to Error Messages ............................................	8
2.1.2 Troubleshooting based on Observed Faults ..............................................	24
Chapter 3 Disassembly And Assembly
3.1 Overview .............................................................................................................	35
3.1.1 Precautions ................................................................................................	35
3.1.2 Tools ..........................................................................................................	36
3.1.3 Screws ........................................................................................................	36
3.1.4 Checks and Precautions before Disassembling .........................................	37
3.1.4.1 Factors which Affect the Print Quality ..............................................	37
3.1.4.2 Factors which Affect the Safety of Service Personnel such as
Ink Leakage during Operation ...........................................................	37
3.1.5 Protection for Transportation ....................................................................	40
3.1.6 Locking/Releasing the Carriage ................................................................	41
3.1.7 Method for making Adapter Guide Holder removal tool ..........................	42
3.1.8 Disassembly ...............................................................................................	43
3.2 Removing the Housings ......................................................................................	45
3.2.1 Paper Support Assy ...................................................................................	45
3.2.2 Stacker Assy ..............................................................................................	45
3.2.3 Front Decoration Plate Left/Right .............................................................	46
3.2.4 Rear Housing .............................................................................................	46
3.2.5 Panel Unit ..................................................................................................	47
3.2.6 Decoration Plate Left/Right .......................................................................	49

3.2.7 Upper Housing / Printer Cover ..................................................................	50
3.2.8 Upper Housing Support Assy ....................................................................	52
3.3 Removing the Boards ..........................................................................................	53
3.3.1 Board Assy (Main Board/Power Supply Board) .......................................	53
3.4 Disassembling the Printer Mechanism ................................................................	55
3.4.1 APG Assy ..................................................................................................	55
3.4.2 CR Scale ....................................................................................................	56
3.4.3 Printhead / Adapter Guide Holder .............................................................	58
3.4.4 Lower Housing / Printer Mechanism ........................................................	61
3.4.5 Carriage Shaft / Carriage Unit ...................................................................	63
3.4.6 ASF Assy ...................................................................................................	71
3.4.7 LD Roller ...................................................................................................	74
3.4.8 Retard Roller Assy ....................................................................................	76
3.4.9 Front Paper Guide Pad ..............................................................................	78
3.4.10 Waste Ink Pad ..........................................................................................	79
3.4.11 Foot ..........................................................................................................	80
3.4.12 Paper EJ Frame Assy ...............................................................................	80
3.4.13 Ink System Unit .......................................................................................	82
3.4.14 Front Paper Guide / Paper EJ Roller .......................................................	85
3.4.15 PF Roller Shaft ........................................................................................	88
3.4.16 Release Holder Assy ...............................................................................	90
3.4.17 Upper Paper Guide Assys ........................................................................	91
3.5 Removing the Motors..........................................................................................	93
3.5.1 CR Motor ...................................................................................................	93
3.5.2 PF Motor ....................................................................................................	95
3.5.3 ASF Motor .................................................................................................	96
3.6 Removing the Sensors .........................................................................................	97
3.6.1 CR Encoder ...............................................................................................	97
3.6.2 PF Encoder ................................................................................................	97
3.6.3 PW Sensor .................................................................................................	98
3.6.4 PE Sensor Holder ......................................................................................	99
3.7 Disassembling the CISS section........................................................................	101
3.7.1 Adapter section ........................................................................................	101
3.7.1.1 Adapter Cover .................................................................................	101

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L1800

Revision A

3.7.1.2 Adapter ............................................................................................	101
3.7.2 Ink Supply Tube Assy section .................................................................	102
3.7.2.1 Tube Guide Sheet/Tube Guide Sheet Sub .......................................	102
3.7.2.2 Tube Guide Sheet (w/Tube Guide Sheet sub) .................................	102
3.7.2.3 Ink Supply Tube Assy .....................................................................	103
3.7.3 Ink Supply Tank Tube Assy section ........................................................	104
3.7.3.1 Ink Supply Tank Tube Assy ............................................................	104
3.7.3.2 Joint .................................................................................................	105
3.7.4 Ink Supply Tank Assy section .................................................................	105
3.7.4.1 Valve Position Label .......................................................................	105
3.7.4.2 Top Cover ........................................................................................	106
3.7.4.3 Tube Valve Holder Front/Rear ........................................................	106
3.7.4.4 Valve Lever .....................................................................................	107
3.7.4.5 Ink Supply Tank Assy .....................................................................	107
3.7.4.6 Bottom Cover/Left Cover/Right Cover/Cover Joint .......................	108
Chapter 4 Adjustment
4.1 Adjustment Items and Overview .......................................................................	110
4.1.1 Servicing Adjustment Item List ...............................................................	110
4.1.2 Required Adjustments .............................................................................	114
4.1.3 Required Adjustment Tools .....................................................................	116
4.2 Adjustment Using Adjustment Program ...........................................................	117
4.2.1 Head angular adjustment .........................................................................	117
4.2.2 PW Adjustment/First Dot Position Adjustment ......................................	118
4.2.3 Bi-D adjustment .......................................................................................	119
4.2.4 BAND printing adjustment ......................................................................	120
4.2.5 PF adjustment ..........................................................................................	121
4.2.6 PF band adjustment .................................................................................	122
4.3 Adjustment without Using Adjustment Program ..............................................	122
4.3.1 PF Belt Tension Adjustment ...................................................................	122
4.3.1.1 PF Belt Tension Adjustment Method ..............................................	123
4.3.2 PG Adjustment ........................................................................................	124
4.3.2.1 PG Adjustment Method ...................................................................	124
4.3.3 PF Roller Shaft Center Support Position Adjustment .............................	127
4.3.4 How to Adjust the PF Roller Shaft Center
Support Position ...............................................................................................	128
4.3.5 ASF Guide Roller LDs Position Adjustment ..........................................	131
4.3.5.1 Adjusting the Position of the ASF Guide Roller LDs .....................	131

Chapter 5 Maintenance
5.1 Overview ...........................................................................................................	134
5.1.1 Cleaning ...................................................................................................	134
5.1.2 Service Maintenance ...............................................................................	134
5.1.2.1 Head Cleaning .................................................................................	134
5.1.2.2 Maintenance Request ......................................................................	135
5.1.3 Lubrication ..............................................................................................	136
5.1.3.1 Lubrication of Carriage Shaft ..........................................................	141
Chapter 6 Appendix
6.1 Connector Summary..........................................................................................	144

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C H A P T E R

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PRODUCT DESCRIPTION

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L1800

Revision A

1.1 Operation Buttons & Indicators (LEDs)

1.1.1 Operation Buttons

The printer has the following four operation buttons.

		Table 1-1. Operation Buttons
	Button	Function
	Power	Turn the power of this unit on/off.
	Paper	In motion:Release error
		In Idle: Load and Eject paper
	Ink	Start Initial Ink Charge or Head cleaning.
	Cancel	In motion:Cancels the job execution / Release error

1.1.2 Indicators (LEDs)

Three indicators (LEDs) are provided to indicate settings or printer status.

Table 1-2. Indicators (LEDs)

LED		Function
Power LED (green)	Indicates power on/off.
Paper LED (red)	Indicates paper error.
Ink LED (red)	Light when the maintenance error occurring.
Power LED	Paper LED	Ink LED

Power Button

Paper

Button

Ink

Button Cancel

Button

Figure 1-1. Buttons & LEDs

1.1.3 Operation Buttons & LEDs Functions

Detailed information on the buttons and LEDs functions are listed below.

Table 1-3. Operation Button Functions

	Button	Printer		Function
		Status
	Power	Off	 Turns the power on.
		On	 Turns the power off.
			 When the condition is Idle, Loads and Ejects the
			paper.
			 When the following condition, loads the paper by
			pressing this key. Release the error display and
			continue the procedure if the paper loading is
			success.
	Paper	On	•	Paper Out Error
			•	Multiple Feed Error
			• Ink waste pad near end error
			 When the following condition, ejects the paper by
			pressing this key. Release the error display and
			continue the procedure if the paper ejecting is
			success.
			•	Paper jam error
	Ink		 Runs a head cleaning.
	(Press 3 seconds or	On
			 Runs a Initial Ink Charge.
	more)
	Cancel	On	 Stop printing, and cancel the job of print.
			 When the error occurs, it cancels error release &
			stops printing and ejects the paper if it exists.
			 Print nozzle check pattern after normal Initializing
	Paper + Power	On	procedure is done.
			 If initial ink fill is not done, execute only initial ink
			fill. Printer does not print nozzle check pattern.

Product Description

Operation Buttons & Indicators (LEDs)

4

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L1800						Revision A
Table 1-4. Indicators (LEDs) Function					Note :	--:No change
						Flash: Repeats turning On and Off every 1.25 seconds.
	Indicators (LEDs)
Printer Status				Priority*1		Flash at high speed: Repeats turning On and Off every 0.5 seconds.
	Power	Paper	Ink
						Flashes alternately 1:Same as the “Flash”
						Flashes alternately 2:Repeats turning Off and On every 1.25 seconds.
Power off (shutting down)	Flashes at	--	--	1
	high speed
Firmware update (While preparing)	--	--	--	2
Firmware update (Starting)	Flashes	OFF	OFF
Fatal error	OFF	Flashes at	Flashes at	3
		high speed	high speed
Ink waste pad overflow error	--	Flashes	Flashes	4
		alternately 1	alternately 2
Ink waste pad near end error	--	Flashes	Flashes	5
		alternately 1	alternately 2
Paper jam error	--	Flashes	--	6
Initial Ink Charge Preparing	Flashes	--	OFF	7
Initial Ink Charge Waiting	ON	--	ON	8
Initial Ink Charging	Flashes	--	Flashes	9
	alternately 1		alternately 2
Multi-feed error	--	ON	--	11
Paper out error	--	ON	--	12
Ink Sequence	Flashes	--	--	13
PC Printing	Flashes	--	--	14
Stop printing & job canceling	Flashes	--	--	15
Loading / Ejecting	Flashes	--	--	16
Power On Sequence	Flashes	--	--	17
Idle	ON	--	--	18
Reset Requirement*2	ON	ON	ON	--

Note *1: When two or more errors occur at the same time, the one with higher priority will be indicated.

*2: The all LEDs light for 0.2 seconds when a reset requirement is received.

Product Description	Operation Buttons & Indicators (LEDs)	5
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L1800 Revision A

1.1.4 Errors & Remedies

Table 1-5. Errors & Remedies

	Error	Occurrence terms	How to release
Fatal error		When the unit detects an error which is impossible to work correctly.	Turn off and restart the unit. (If occurs repeatedly, it must be repaired.)
Ink waste pad overflow error		When the ink waste fluid comes full.	Turn off the unit.
			Change the absorber in the printer enclosure by a service person. and write
			EEPROM’s data.
Ink waste pad near end error		When the ink waste fluid nears full capacity.	 Press the Release error key.
			 By pressing the Stop key, it cancels print data.
Paper jam error		When the paper loading or paper ejecting is not success.	 Remove paper and push the Release error key to continue.
			 By pressing the Release error key, ejects the paper and continue the procedure if
			the paper ejecting is success.
			 By pressing the Cancel key, it cancels error display and cancels print data and
			returns from error status.
Paper out error		Failure to load paper to print.	 Set paper and push the Release error key to continue.
			 By pressing the Release error key, feeds the paper and continue the procedure if
			the paper feeding is success.
			 By pressing the Stop key, it cancels error display and cancels print data and
			returns from error status.
Multiple feed error		When the paper is ejected without printing.	 Reset the incorrectly ejected paper and push the Release error key to continue.
		When the fed paper size is longer than the specified value during	 By pressing the Release error key, feeds the paper and continue the procedure if
		duplex printing.	the paper feeding is success.
			 By pressing the Stop key, it cancels error display and cancels print data and
			returns from error status.
Note :	For more information on the remedies, see “2.1.1 Troubleshooting according to Error Messages” (p.8).

Product Description

Operation Buttons & Indicators (LEDs)

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C H A P T E R

2

TROUBLESHOOTING

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L1800

Revision A

2.1 Overview

This chapter describes unit-level troubleshooting.

2.1.1 Troubleshooting according to Error Messages

After checking the printer LED and STM3 error indications, you can grasp the fault location using the check list in this section. When you find the fault location, refer to Chapter 3 “Disassembly and Reassembly” and change the corresponding part and/or unit. The following table indicates the check point reference tables corresponding to the error states (LED and STM3).

Table 2-1. List of Error Messages

	Error Status		LED Indications				See the table for Troubleshooting
		Power	Paper		Ink
Paper out error		-	Light		-	Refer to Table 2-3 “Troubleshooting of Paper Out Error” (P.11)
Paper jam error		-	Flash		-	Refer to Table 2-4	“Troubleshooting of Paper Jam Error” (P.13)
Multi-feed error		-	Light		-	Refer to Table 2-5	“Troubleshooting of Multi-feed error” (P.14)
Maintenance request		Off	Flashes alternately 1		Flashes alternately 2	Refer to Table 2-6	“Troubleshooting of Maintenance Request” (P.14)
Fatal error		Off	Flashes at high speed		Flashes at high speed	Refer to Table 2-7	“Troubleshooting of Fatal Error” (P.15)
Note :	--:	No change
	Flash:	Repeats turning On and Off every 1.25 seconds.
	Flash at high speed: Repeats turning On and Off every 0.5 seconds.
	Flashes alternately 1: Same as the “Flash”
	Flashes alternately 2: Repeats turning Off and On every 1.25 seconds.

Troubleshooting

Overview

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L1800									Revision A
		Table 2-2. Troubleshooting of Communication Error
Occurrence	Phenomenon Detail	Faulty Part/		Check Point					Remedy
Timing		Part Name
At power-on	The printer does not operate at all. Panel FFC		1. Check that the Panel FFC is connected to the Panel Board						1. Connect the Panel FFC to the Panel Board and
			connector and Main Board connector CN4.						Main Board connectors.
				Panel Board			Panel FFC
				connector

			Panel FFC			CN4
	2.		Check the Panel FFC for damages.					2.	Replace the Panel FFC with a new one.
Panel Board	1.		Check the Panel Board for damages.					1.	Replace the Panel Board with a new one.
Power Supply	1.		Check that the connector cable of the Power Supply Board is					1.	Connect the connector cable of the Power
Board			connected to the Main Board connector CN60.						Supply Board to the Main Board connector
									CN60.
			Connector cable of the
			Power Supply Board

CN60

Troubleshooting

Overview

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L1800							Revision A
		Table 2-2. Troubleshooting of Communication Error
Occurrence	Phenomenon Detail	Faulty Part/			Check Point		Remedy
Timing		Part Name
At power-on	The printer does not operate at all. Power Supply		2. Check that the Fuse F1 on the Power Supply Board has not				2. Replace the Power Supply Board with a new
		Board	blown.				one.
						Power Supply Board
				Fuse F1

			3.	Check the components on the Power Supply Board for damage.	3.	Replace the Power Supply Board with a new
						one.
At operation	Operation at power-on is normal, Interface cable		1.	Check that the Interface cable is connected between the PC and	1.	Connect the Interface cable to the PC and
	but the error appears when the			printer.		printer.
	print job is sent to the printer.
			2.	Check the Interface cable for breaking.	2.	Replace the Interface cable with a new one.
		USB	1.	Check that the PC and printer are connected via the USB hub.	1.	Configure the USB ID setting.
						Refer to Chapter 4 “Adjustment”.
		Printer Driver	1.	Check that the printer driver for L1800 has already been	1.	Install the printer driver for L1800.
				installed.
			2.	Check that the connected printer is L1800.	2.	Connect the L1800 printer.
		Main Board	1.	Check that a wrong model name has not been input to the	1.	Make the initial setting using the Adjustment
				EEPROM on the Main Board.		Program.
						Refer to Chapter 4 “Adjustment”.

Troubleshooting

Overview

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L1800					Revision A
		Table 2-3. Troubleshooting of Paper Out Error
Occurrence	Phenomenon Detail	Faulty Part/	Check Point		Remedy
Timing		Part Name
At operation	When the Paper Switch is	ASF Assy.	1. Check the LD Roller or Retard Roller of the ASF Assy for paper 1.	Using a cleaning sheet, clean the LD Roller
	pressed, the LD Roller attempt to		dust and foreign matter.	and Retard Roller. The procedure is as follows.
	feed paper but the paper is not			(1) Place the cleaning sheet upside down and
	fed.				put it into the ASF Assy.
				(2)	Press the Paper Switch to start paper feed.
				(3)	Repeat the above steps several times.
				* To remove persistent contamination, staple
					an alcohol-dampened cloth to a postcard
					and clean the rollers in the following
					method.

Cleaning sheet	Postcard used
	as mount
Non-adhesive part
Adhesive part
This side down	Stapling
	Cloth damped
	with alcohol

(1) Place the alcohol-dampened cloth toward the LD Roller surface of the ASF Assy.

(2) Hold the mount top end securely and press the Paper Switch.

(3) Repeat the paper feed sequence several times to clean the LD Roller surface of the ASF Assy.

Troubleshooting

Overview

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L1800									Revision A
		Table 2-3. Troubleshooting of Paper Out Error
Occurrence	Phenomenon Detail	Faulty Part/			Check Point				Remedy
Timing		Part Name
At operation	Paper Mismatch Error is	PE Sensor	1. Check that the connector cable of the PE Sensor is securely						1. Connect the connector cable of the PE Sensor
	indicated.			connected to the PE Sensor and Relay Board connector CN2.					to the PE Sensor and connector CN2 on the
									Relay Board correctly.
				PE Sensor connector			CN2

2.	Check that the Sensor Holder is mounted to the Mechanical							2.	Install the Sensor Holder correctly.
	frame correctly.
			Sensor Holder
			Detection Lever
			Torsion Spring
3.	Move the Detection Lever manually as when the paper passes,							3.	Replace the PE Sensor Holder Unit with a new
	and check that the Detection Lever returns to the original								one.
	position automatically by the Torsion Spring when released.
	Refer to the above photo.
4.	Using a tester, check that the PE Sensor is normal.							4.	Replace the PE Sensor Holder Unit with a new
	Paper absent			: 2.4V or more					one.
	Paper present			: 0.4V or less

Troubleshooting

Overview

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L1800									Revision A
		Table 2-4. Troubleshooting of Paper Jam Error
Occurrence	Phenomenon Detail	Faulty Part/				Check Point			Remedy
Timing		Part Name
At operation	At the time of paper ejection, the	–	1.	Check that the size of the fed paper is not larger than that of the				1.	Tell the user that the paper size specified by the
	PF Roller advances the paper but			paper specified by the driver.					driver is not available for the printer.
	cannot eject it completely.
	Paper is not ejected completely	ASF Assy.	1.	Check that the paper is fed along the Right Edge Guide.				1.	Feed the paper along the Right Edge Guide.
	and causes a jam near the Paper
		Paper EJ Frame	1.	Check that the Star Wheel Units have not come off the Paper EJ				1.	Securely install the Star Wheel Units to the
	Eject Frame.
		Assy.		Frame Assy.					Paper EJ Frame Assy.
					Paper EJ Frame Assy.

				Star Wheel Units
	2.	Check the Paper EJ Frame Assy for deformation or damages.							2.	Replace the Paper EJ Frame Assy with a new
										one.
Spur Gear 68	1.	Check the Spur Gear 68 or Spur Gear 16; B for damages.							1.	Replace the Front (or Rear) Paper EJ Roller
Spur Gear 16; B										Assy with a new one.
Paper EJ Roller
				Spur Gear 16; B
Assy.(front/rear)

Spur Gear 68

Troubleshooting

Overview

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L1800					Revision A
			Table 2-5. Troubleshooting of Multi-feed error
Occurrence	Phenomenon Detail	Faulty Part/Part		Check Point	Remedy
Timing		Name

Any time	During manual double-sided	ASF Assy
	printing, multiple sheets are fed
	at a time.

1. Check that the Retard Roller Assy is moving properly during the 1.					Attach the Extension Spring on the back side
feeding operation.					of the Retard Roller Assy correctly.
					Refer to Chapter 3 Retard Roller Assy (P.76).
	Bottom of
	the ASF Assy
			Extension Spring
	Retard Roller
	Assy

	ASF Assy
2. Check that the position of the ASF Guide Roller LDs has been			2. Adjust the position of the ASF Guide Roller
adjusted correctly.			LDs.
			Refer to Chapter 3 ASF Assy (P.71).

Table 2-6. Troubleshooting of Maintenance Request

	Occurrence	Phenomenon Detail	Faulty Part/	Check Point	Remedy
	Timing		Part Name
	At power-on	At power-on, the printer does not	Waste Ink Pads	1. Using the Adjustment Program, check if the values of the	1. Replace the Waste Ink Pads and reset the
		operate at all.		Protection Counter A and B have exceeded the threshold value.	Protection Counter A and B value with the
					Adjustment Program.

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L1800

Revision A

Table 2-7. Troubleshooting of Fatal Error

Occurrence

Phenomenon Detail

Faulty Part/

Check Point

Remedy

Timing

Part Name

At power-on

At power-on, the CR Motor does

CR Motor

1.

Check the CR Motor connector cable for damages.

1.

Replace the CR Motor with a new one.

not operate at all.

2.

Check if the CR Motor operates normally.

2.

Replace the CR Motor with a new one.

3.

Check that the CR Motor connector cable is connected to the

3.

Connect the CR Motor connector cable to the

Main Board connector CN115.

Main Board connector CN115.

CN115

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L1800						Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/			Check Point	Remedy
Timing		Part Name
At power-on	The power-on sequence is	CR drive	1. Check that the Carriage Shaft is lubricated with grease.			1. Wipe the surface of the Carriage Shaft with a
	executed but Fatal error is	mechanism				dry, soft cloth, and lubricate the Carriage
	displayed.					Shaft with grease G-71.
				Carriage Shaft		Refer to Chapter 5 “Maintenance”.

At power-on, the PF Motor does PF Motor	1. Check that the connector cable of the PF Motor is connected to	1. Connect the PF Motor connector cable to the
not operate at all.	the Main Board connector CN116.	Main Board connector CN116.

		CN116
2.	Check the PF Motor connector cable for damages.			2.	Replace the PF Motor with a new one.
3.	Check if the PF Motor operates normally.			3.	Replace the PF Motor with a new one.

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L1800										Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/							Check Point	Remedy
Timing		Part Name
At power-on	At power-on, the APG Motor	APG Motor	1. Check that the connector cable of the APG Motor is connected							1. Connect the APG Motor connector cable to
	does not operate at all.			to the Main Board connector CN118.						the Main Board connector CN118.

CN118

2.

Check the APG Motor connector cable for damage.

2.

Replace the APG Assy with a new one.

3.

Check if the APG Motor operates normally.

3.

Replace the APG Assy with a new one.

At power-on, the Pump Motor

Pump Motor

1.

Using a tester, check the resistance value of the Pump Motor.

1.

If the resistance value is abnormal, replace the

does not operate at all.

Value of resistance: 10.3 ± 10%

Ink System with a new one.

2.

Check the Pump Motor connector cable for damages.

2.

Replace the Ink System with a new one.

3.

Check that the Pump Motor connector cable is connected to the

3.

Connect the Pump Motor connector cable to

Main Board connector CN117.

the Main Board connector CN117.

CN117

4. Check the Pump Motor connector cable for damages.

4. Replace the Ink System with a new one.

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L1800							Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/		Check Point			Remedy
Timing		Part Name
At power-on	While the power-on sequence is	APG Sensor	1. Check the APG Sensor connector cables is connected to the				1. Connect the APG Sensor connector cables to
	being executed, Fatal error is		APG Sensor connectors.				the APG Sensor connectors.
	displayed.		2. Check if the connector cables of the APG Sensor is broken.				2. Replace the ASF Assy with a new ones.
				APG Sensor connector cables
					APG Sensors

3. Check the APG Sensors for damages.

3. Replace the APG Assy with a new one.

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L1800						Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/		Check Point		Remedy
Timing		Part Name
At power-on	While the power-on sequence is	ASF Motor	1. Check that the connector cable of the ASF Motor is connected			1. Connect the connector cable of the ASF
	being executed, Fatal error is		to the Relay connector.			Motor to the Relay connector.
	displayed.
				ASF Motor

								Relay connector
	2.	Using a tester, check the resistance value of the ASF Motor.								2.	If the resistance value is abnormal, replace the
		Value of resistance: 7.0 ± 10%									ASF Motor with a new one.
	3.	Check the ASF Motor connector cable for damages.								3.	Replace the ASF Motor with a new one.
Relay connector 1.		Check that the Relay connector cable is connected to the Main								1.	Connect the Relay connector cable to the
cable		Board connector CN119.									Main Board connector CN119.

	CN119
2. Check the Relay connector cable for damages.			2. Replace the Relay connector cable with a new
			one.

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L1800								Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/			Check Point			Remedy
Timing		Part Name
At power-on	While the power-on sequence is	Relay FFC	1. Check that the Relay FFC is connected to the Relay Board					1. Connect the Relay FFC to the Relay Board
	being executed, Fatal error is		connector CN1 and Main Board connector CN5.					connector CN1 and Main Board connector
	displayed.							CN5.
				CN1
						Relay FFC

CN5

2. Check the Relay FFC for damages.

2. Replace the Relay FFC cable with a new one.

At power-on, the Carriage Unit	CR Scale	1. Check that the CR Scale is inserted in the slit of the CR	1. Insert the CR Scale into the slit of the CR
moves away from the home		Encoder Sensor.	Encoder Sensor.
position and bumps against the
right of the Frame, then hits the		CR Scale
left of the Frame.
		CR Encoder
		Sensor Board

	2.	Check the CR Scale for damages and dirt.	2.	Wipe off the dirt completely or replace the CR
				Scale with a new one.
CR Encoder	1.	Check the CR Encoder Sensor for paper dust, etc.	1.	Remove the paper dust, etc. from the CR
Sensor Board				Encoder Sensor.
	2.	Check the CR Encoder Sensor Board for damages.	2.	Replace the CR Encoder Sensor Board with a
				new one.

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L1800

Revision A

Table 2-7. Troubleshooting of Fatal Error

Occurrence

Phenomenon Detail

Faulty Part/

Check Point

Remedy

Timing

Part Name

At power-on

At power-on, the Carriage Unit

Sensor FFC

1. Check that the Sensor FFC is connected to the CR Encoder

1. Connect the Sensor FFC to the CR Encoder

moves away from the home

Sensor Board connector and Main Board connector CN9.

Sensor Board connector and Main Board

position and bumps against the

connector CN9.

right of the Frame, then hits the

left of the Frame.

				CR Encoder Sensor
				Board connector				CN9
		2.	Check the Sensor FFC for damages.							2.	Replace the Sensor FFC with a new one.
At power-on, the PF Roller	PF Encoder	1.	Check that the PF Encoder Sensor Holder is mounted correctly.							1.	Install the PF Encoder Sensor Holder
rotates fast about a half turn.	Sensor Holder										correctly.
		2.	Check that the FFC of the PF Encoder Sensor is securely							2.	Connect the PF Encoder Sensor FFC to the PF
			connected to the PF Encoder Sensor Board connector and Relay								Encoder Sensor Board and Relay Board
			Board connector CN6.								connector CN6.
						CN6

	PF Encoder Sensor
	Board connector
3. Check the PF Encoder Sensor for paper dust, etc.			3.	Remove the paper dust, etc. from the PF
				Encoder Sensor.
4. Check if the PF Encoder or the FFC is damaged.			4.	Replace the PF Encoder with a new one.

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L1800				Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/	Check Point	Remedy
Timing		Part Name
At power-on	At power-on, the PF Roller	PF Scale	1. Check that the PF Scale is inserted in the slit of the PF Encoder	1. Install the PF Scale in the slit of the PF
	rotates fast about a half turn.		Sensor.	Encoder Sensor correctly.

PF Scale

Slit

2.

Check the PF Scale for damages and dirt.

2.

Replace the PF Scale with a new one.

During printing

After receiving a print data, an

Head FFC

1.

Check that the Head FFC and the Sensor FFC are securely

1.

Connect the Head FFC and the Sensor FFC to

error is displayed on the LED

Sensor FFC

connected to the Main Board connectors CN9, CN12, CN13,

the Main Board connectors CN9, CN12,

and STM3.

and CN14.

CN13, and CN14.

CN9, CN12, CN13, CN14

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L1800				Revision A
			Table 2-7. Troubleshooting of Fatal Error
Occurrence	Phenomenon Detail	Faulty Part/	Check Point	Remedy
Timing		Part Name
During printing	After starting to print, ink is not	Head FFC	1. Check that the Head FFC is securely connected to the Main	1. Connect the Head FFC to the Main Board
	ejected and paper stops midway.		Board connectors CN12, CN13, and CN14.	connectors CN12, CN13, and CN14.

CN12, CN13, CN14

2.

Check the Head FFC for damages.

2.

Replace the Head FFC with a new one.

Head FFC

1.

Check that the Head FFC is securely connected to the Print

1.

Connect the Head FFC to the CR Relay Board

Head connectors.

connectors CN1 and CN2.

2.

Connect the Head FFC to the Print Head

Head FFC

connectors.

				Print Head
				Connector
		2.	Check the Head FFC for damages.		3.	Replace the Head FFC with a new one.
Ink is not ejected from most	Print Head	1.	Check for occurrence of Head Hot.		1.	Replace the Print Head with a new one.
nozzles.

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L1800

Revision A

2.1.2 Troubleshooting based on Observed Faults

This section provides troubleshooting procedures based on observed faults such as print quality troubles and abnormal noise.

Table 2-8. Print Quality Troubles

Observed Faults	Details of the Fault	Faulty Part/		Check Point			Remedy
		Part Name
Dot missing and	Inks are not ejected from the	Ink System Unit	1. Check for foreign matter around the Seal Rubber on the Cap				1. Remove the foreign matter around the Seal
mixed colors	Print Head to the Cap.	(Cap)	Unit.				Rubber completely.
				Seal Rubbers

			Extension Spring, 1.19 IS
	2.	Check that the Extension Spring 1.19 IS is correctly installed to				2.	Replace the Ink System Unit with a new one.
		the Cap Unit.
Although inks are ejected from Print Head	1.	Run a Nozzle Check, and check the printed pattern if it has				1.	After running a Head Cleaning, check the
the Print Head to the Cap, the		broken lines or missing segments.					Nozzle Check Pattern again.
trouble still occurs after
executing a cleaning cycle.

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L1800

Revision A

Table 2-8. Print Quality Troubles

Observed Faults

Details of the Fault

Faulty Part/

Check Point

Remedy

Part Name

Dot missing and

Although inks are ejected from Head FFC

1. Check that the Head FFC is securely connected to the Main

1. Connect the Head FFC to the Main Board

mixed colors

the Print Head to the Cap, the

Board connectors CN12, CN13, and CN14.

connectors CN12, CN13, and CN14.

trouble still occurs after

executing a cleaning cycle.

			CN12, CN13, CN14
	2.	Check the Head FFC for damages.					2.	Replace the Head FFC with a new one. If the
								trouble still occurs after replacing it, replace the
								Print Head with a new one.
Head FFC	1.	Check that the Head FFC is securely connected to the Print Head					1.	Connect the Head FFC to the CR Relay Board
		connectors.						connectors CN1 and CN2.
							2.	Connect the Head FFC to the Print Head
					Head FFC
								connectors.

	Print Head
	Connector
2. Check the Head FFC for damages.		3. Replace the Head FFC with a new one. If the
		trouble still occurs after replacing it, replace the
		Print Head with a new one.

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