SERVICE MANUAL
Color Inkjet Printer
EPSON Stylus Photo R340/350
SEIJ05008
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. DO NOT REPLACE IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC OR
OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE
WARRANTY OFFERED BY EPSON.
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.
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. TROUBLESHOOTING
Describes the step-by-step procedures for the troubleshooting.
CHAPTER 2. DISASSEMBLY / ASSEMBLY
Describes the step-by-step procedures for disassembling and
assembling the product.
CHAPTER 3. ADJUSTMENT
Provides Epson-approved methods for adjustment.
CHAPTER 4. MAINTENANCE
Provides preventive maintenance procedures and the lists of
Epson-approved lubricants and adhesives required for
servicing the product.
APPENDIX Provides the following additional information for
reference:
• Block Diagram
• Electrical circuit boards schematics
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.
A D J U S T M E N T
R E Q U I R E D
C A U T I O N
C H E C K
P O I N T
W A R N I N G
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.
Revision Status
Revision Issued Date Description
A September 16, 2005 First Release
EPSON Stylus Photo R340/350 Revision A
CONTENTS
Chapter 1 Troubleshooting
1.1 Overview . ............................................................................................................. 8
1.2 Warning/Error Messages and Possible Causes . .................................................... 9
1.3 Troubleshooting . ................................................................................................. 13
1.3.1 Troubleshooting by Error Message . .......................................................... 13
1.3.2 Troubleshooting by Observed Symptom . .................................................. 30
Chapter 2 Disassembly and Assembly
2.1 Overview . ........................................................................................................... 37
2.1.1 Precautions .................................................................................................. 37
2.1.2 Tools ........................................................................................................... 38
2.1.3 Work Completion Checklist . ..................................................................... 38
2.2 Ensuring the Quality of Disassembled/Reassembled Printer Mechanism ......... 39
2.3 Disassembly . ....................................................................................................... 41
2.3.1 Removing the Paper Support Assy. . .......................................................... 42
2.3.2 Removing the Left Housing . ...................................................................... 43
2.3.3 Removing the Right Housing . ................................................................... 44
2.3.4 Removing the Panel Board/LCD Module . ................................................. 46
2.3.5 Removing the Upper Housing . .................................................................. 48
2.3.6 Removing the Rear Housing . ..................................................................... 50
2.3.7 Removing the Stacker Assy. . ..................................................................... 51
2.3.8 Removing the Front Paper Guide Porous Pads . ......................................... 52
2.3.9 Removing the Main Board Assy. . .............................................................. 54
2.3.10 Removing the ASF Assy. . ....................................................................... 58
2.3.11 Removing the Shaft Assy. Holder . .......................................................... 62
2.3.12 Removing the CR Motor . ........................................................................ 66
2.3.13 Removing the Print Head . ........................................................................ 67
2.3.14 Removing the Upper Paper Guide . .......................................................... 69
2.3.15 Removing the Printer Mechanism . .......................................................... 70
2.3.16 Removing the Power Supply Assy. . ........................................................ 74
2.3.17 Removing the Waste Ink Pads . ................................................................ 75
2.3.18 Removing the Lower Housing . ................................................................ 76
2.3.19 Removing the APG Assy. . ....................................................................... 77
2.3.20 Removing the Carriage Unit . ................................................................... 78
2.3.21 Removing the CD-R Guide Assy. ........................................................... 84
2.3.22 Removing the Ink System . ....................................................................... 88
2.3.23 Removing the Front Paper Guide and EJ Roller Assy. . .......................... 91
2.3.24 Removing the PF Motor . ......................................................................... 95
2.3.25 Removing the PF Roller Assy. . ............................................................... 96
Chapter 3 Adjustment
3.1 Adjustment Items and Overview . ....................................................................... 99
3.1.1 Replacement Part-Based Adjustment Priorities . ....................................... 99
3.2 Adjustment by using adjustment program . ....................................................... 101
3.2.1 How to judge print samples by using the adjustment program ............... 105
3.2.1.1 Head Angular Adjustment . .............................................................. 105
3.2.1.2 Bi-d Adjustment . ............................................................................. 105
3.2.1.3 PW Sensor Adjustment/First Dot Adjustment/
Top Margin Adjustment . ................................................................. 106
3.3 Adjustment Except Adjustment Program . ........................................................ 108
3.3.1 PG Adjustment . ....................................................................................... 108
Chapter 4 Maintenance
4.1 Overview ........................................................................................................... 112
4.1.1 Cleaning .................................................................................................... 112
4.1.2 Service Maintenance . ............................................................................... 112
4.1.3 Lubrication ................................................................................................ 113
Chapter 5 Appendix
5.1 Block Diagram . ................................................................................................ 122
5.2 Exploded Diagram . ........................................................................................... 124
5.3 Electrical Circuits .............................................................................................. 124
6
TROUBLESHOOTING
CHAPTER
1
EPSON Stylus Photo R340/350 Revision A
1.1 Overview
This chapter describes how to troubleshoot problems. Be sure to see the tables
provided in this chapter to identify the component that caused the problem you face.
And follow the instructions in the table to troubleshoot the component. Also refer to
the Motor Wire-Wound Resistor and Sensor Check Points.
Start
Identifying the unit (component) caused the problem
Repairing the unit (component)
Reassembly and adjustment
Finish
Table 1-1. Motor Wire-Wound Resistor
Motor Connected Pin No. Check Point Resistance
PF Motor
(ASF/Pump Motor)
NOTE:As the CR Motor and the APG Motor are DC motors, the resistance between the pins
fluctuates. So checking them if they work properly or not is made only by observing them
visually (if they rotate or not). It is, however, sometimes difficult to judge, so when in
doubt, replace the motor.
CN10 Pin 1 and 3
Pin 2 and 4
3.0Ω ±10%
(25°C/phase)
Table 1-2. Sensors Check Point
Sensor Pin No. Check point Signal level Sensor Statuses
Tray Sensor CN2 Pin 1 and 2 --- Open:
Nipped with Star Wheel
(ASF mode)
--- Close:
Star Wheel is released
(CDR mode)
CDR Sensor CN2 Pin 3 and 4 --- Close: CDR Tray not attached
--- Open: CDR Tray attached
PG Sensor CN3 Pin 1 and 2 2.4V or more Close: PG is set to a preset amount
0.4V or lower Open: Switching PG setting
PE Sensor CN4 Pin 1 and 2 2.4V or more Close: No paper loaded
0.4V or lower Open: Paper is loaded
Figure 1-1. Troubleshooting Workflow
Troubleshooting Overview 8
EPSON Stylus Photo R340/350 Revision A
1.2 Warning/Error Messages and Possible Causes
The following tables explain the warning/error messages displayed on the LCD and the possible causes of them. The messages are displayed during the printer is performing various
sequences (feeding paper, absorbing ink or etc.) or displayed responding to the operations the user made (turning the power on, loading paper or etc.).
Table 1-3. LCD Error Messages and Possible Causes
LCD Messages Printer Condition Possible Causes Recovery from Errors Reference
--- Communication error A communication error between the host computer and
the printer occurred.
(Background of the ink-low status ink
cartridge icon is displayed in gray)
No ink cartridge. Set ink cartridge.
[BK](T0481) [M](T0483)
[C](T0482) [LM](T0486)
[LC](T0485) [Y](T0484)
Ink out. Replace the following ink
cartridge.
[BK](T0481) [M](T0483)
[C](T0482) [LM](T0486)
[LC](T0485) [Y](T0484)
Replace the ink cartridge. For best results,
use genuine EPSON ink.
[BK](T0481) [M](T0483)
[C](T0482) [LM](T0486)
[LC](T0485) [Y](T0484)
NOTE "*" :The ink cartridge codes displayed on the LCD vary according to the model.
Stylus Photo R340 : [BK]T0481,[M]T0483,[C]T0482,[LM]T0486,[LC]T0485,[Y]T0484
Stylus Photo R350 : [BK]T0491,[M]T0493,[C]T0492,[LM]T0496,[LC]T0495,[Y]T0494
The remaining amount of
ink is low.
Ink related message 1*
(No ink cartridge)
Ink related message 5*
(Ink Out)
Ink related message 7*
(Ink cartridge failure)
This occurs when consumed amount of ink reached 90%.
[Caution]
The printer can continue printing operation even after the
warning message is displayed on the STM3 screen.
However, the printer cannot run a head cleaning.
Ink cartridges are not installed or not installed properly. Recovers from the error after replacement of ink
Occurs in the following conditions:
• The consumed ink amount reached 100%.
• Ink cartridge failure
[Caution]
The ink cartridge detected as “Ink out” is not totally
empty. It still has some amount of ink. This prevents
Print Head from damaging by printing without ink.
Reading and writing of the CSIC information of the ink
cartridges could not be performed properly.
Correctly connect the printer and the computer. p.13
Replace the ink cartridge(s) with new one(s). ---
p.15
cartridge(s) has completed.
[Supplement]
• The message appears within 60 seconds at
maximum after the occurrence if no operation
has been made during the period.
• The message appears immediately before
starting a print job or cleaning.
Replace the ink cartridge(s) with new one(s). ---
Replace the ink cartridge(s) with new one(s). p.15
Troubleshooting Warning/Error Messages and Possible Causes 9
EPSON Stylus Photo R340/350 Revision A
Table 1-3. LCD Error Messages and Possible Causes (continued)
LCD Messages Printer Condition Possible Causes Recovery from Errors Reference
External device is not connected or media
is not inserted. Backup canceled.
Insufficient space on the backup device.
Backup cannot be performed.
No memory card in slot. Backup canceled. Backup error (no card) No memory card is inserted into the slot of the printer. Automatically recovers from the error after a lapse
A printer error occurred. Please see your
manual.
Paper out. Load paper press the Start
button.
Paper or CD/DVD tray jam or feed error.
Press the Start button. If the error does not
clear, reinsert the paper or CD/DVD tray
and press the Start button.
Service required. Parts inside your printer
are at end of their service life. See your
manual for details.
Bluetooth print adapter cannot be
recognized. Please remove and reinstall
the adapter.
There is a problem with the IrDA
interface. See your manual.
The CD/DVD tray is not set correctly.
Reload the tray and press Start to
continue.
Backup error
(no external connection)
Backup error
(insufficient capacity)
Fatal error Occurs in the following conditions:
No paper error The PE Sensor could not detect the top edge of paper
Jam error Occurs in the following conditions:
Maintenance error This error is detected when the amount of the waste
BT communications error Had no response from the Bluetooth unit when the
IrDA communications error Had no response from the IrDA unit when the printer
CDR error (correct set) Occurs when the printer starts to print on a CD or DVD
CDR error (reset request) The CD/DVD tray could not be detected properly when
Occurs in the following conditions:
• An external device is not connected to the printer.
• No media is set into the connected external device.
• No image is stored on the memory card.
The capacity of the media specified to back up is
insufficient.
• The Carriage Unit cannot move properly because of
an external force exerted on the unit.
• The PF Motor cannot operate properly.
during the paper feeding sequence.
• The PE Sensor could not detect the bottom edge of
paper during the paper feeding operation.
• The Tray/CDR Sensor could not detect the bottom
edge of CD or DVD during the CD/DVD feeding
operation.
liquid absorbed by the Waste Ink Pads has reached its
upper limit (when the protection counter has reached its
upper limit).
printer started the Bluetooth communication.
started the infrared data communication.
without the CD/DVD tray attached.
the printer starts to print on a CD or DVD.
Automatically recovers from the error after a lapse
of three seconds.
Automatically recovers from the error after a lapse
of three seconds.
of three seconds.
Turn off the Power. p.16
Press the Start button. The printer recovers from
the error when paper is fed correctly.
Remove the jammed paper or the CD/DVD tray. p.21
Replace the Waste Ink Pads and reset the
Protector Counter.
Remove the Bluetooth unit and press the OK
button.
Remove the IrDA unit. ---
Automatically recovers from the error after a lapse
of three seconds.
Automatically recovers from the error after a lapse
of three seconds.
---
---
---
p.19
---
---
---
---
Troubleshooting Warning/Error Messages and Possible Causes 10
EPSON Stylus Photo R340/350 Revision A
Table 1-3. LCD Error Messages and Possible Causes (continued)
LCD Messages Printer Condition Possible Causes Recovery from Errors Reference
The CD/DVD guide is open. Close the
guide to print on paper.
Paper jam. Load paper and press the Start
button. If the error does not clear, repeat
the procedure.
The CD/DVD tray is not set correctly.
Reload the tray and press Start to
continue.
Error in the data. The document may not
be printed correctly.
Error in the data. The document cannot be
printed.
Cannot recognize the memory card or
disk.
The document is too large to print with
Bluetooth.
The document is too complex to print with
Bluetooth.
Error in the data. The document cannot be
printed.
CDR/DVD guide open Displayed in the following conditions:
• The CDR Guide Assy. is opened when the printer
started to print on a cut sheet.
• The CDR Guide Assy. is opened during the printer is
printing on a cut sheet.
Name card long edge first
insertion error
Paper mismatch error The center of the CD or DVD could not be detected
A part of the reference
object is broken (BTMIME).
A part of the reference
object cannot be buffered
(BT-MIME).
XHTML-Print document
cannot be decoded (BTMIME).
Insertion of unsupported
media
BT File size error The specified XHTML-Print data is larger than 100 K
BT designation error The specified XHTML-Print data is too complicated (tag
BT structure error XHTML-Print data could not be decoded. Press any one of the buttons on the printer. ---
A name card is loaded onto the printer in landscape
orientation.
during the CD/DVD print job.
Decoding XHTML print data was made successfully, but
failed to obtain all or some reference objects included in
the data due to their MIME encode errors.
The printout will result in as follows depending on what
type of the missed reference objects are:
• Image objects
Blank areas on where the missed objects are supposed
to be printed appear.
• CSS (style sheet) files
Background color and font size appear differently
from what you expected.
Decoding XHTML print data was made successfully, but
failed to obtain all or some reference objects included in
the data due to insufficient memory or the number of the
objects exceeded the upper limit.
Failed to decode XHTML data to print due to MIME
encode errors, or XHTML-Print is not contained.
Not formatted or not compatible media is inserted. Automatically recovers from the error after a lapse
bytes.
setting or etc.) to print.
Automatically recovers from the error after a lapse
of three seconds.
Remove the jammed card following the
instruction displayed on the LCD.
Load media that match the print setting. p.28
Press any one of the buttons on the printer. ---
Press any one of the buttons on the printer. ---
Press any one of the buttons on the printer. ---
of three seconds.
Press any one of the buttons on the printer. ---
Press any one of the buttons on the printer. ---
p.25
p.27
---
Troubleshooting Warning/Error Messages and Possible Causes 11
EPSON Stylus Photo R340/350 Revision A
Table 1-3. LCD Error Messages and Possible Causes (continued)
LCD Messages Printer Condition Possible Causes Recovery from Errors Reference
No memory card or disk inserted, or it
cannot be recognized.
Cannot recognize the memory card or
disk.
Cannot recognize the device. External device installment A not compatible memory device is connected to the port
All photos for the specified layout are
selected.
[BK](T0148) [M](T0483)
[C](T0482) [LM](T0486)
[LC](T0485) [Y](T0484)
The installed ink cartridges differ from the
genuine EPSON ink cartridges listed
below.
The use of other products may affect your
print quality and could result in printer
damage. Do you want to continue using
the currently installed ink cartridges?
Even if borderless printing has been
selected, a white border may still appear
on an edge.
NOTE "*" :The ink cartridge codes displayed on the LCD vary according to the model.
Stylus Photo R340 : [BK]T0481,[M]T0483,[C]T0482,[LM]T0486,[LC]T0485,[Y]T0484
Stylus Photo R350 : [BK]T0491,[M]T0493,[C]T0492,[LM]T0496,[LC]T0495,[Y]T0494
Memory card print A memory card in which has no image data is inserted. Automatically recovers from the error after a lapse
of three seconds.
Card insertion Cannot recognize the memory card inserted into the
printer.
for the external memory devices.
Memory card print onto CD/
DVD
Ink related message 3*
(wrong model number of
ink cartridge)
Borderless expansion Displayed when “Minimum” is selected for the
The number of images retrieved from the memory card to
print on a CD exceeded the upper limit.
Non-EPSON ink cartridges are installed. Press the OK button or the Back button. ---
“Borderless expansion” print setting menu.
Automatically recovers from the error after a lapse
of three seconds.
Automatically recovers from the error after a lapse
of three seconds.
Automatically recovers from the error after a lapse
of three seconds.
Automatically recovers from the error after a lapse
of three seconds.
---
---
---
---
---
Troubleshooting Warning/Error Messages and Possible Causes 12
EPSON Stylus Photo R340/350 Revision A
1.3 Troubleshooting
Be sure to first check the messages displayed on the LCD or the STM3 screen on a connected computer to identify the cause of the problem quickly. Then troubleshoot the problem
following the instructions given in the tables in this section. When any components to be repaired or replaced are found, see Chapter 2 “Disassembly/Reassembly” to correctly
reinstall or replace the components.
1.3.1 Troubleshooting by Error Message
Table 1-4. Troubleshooting of Communication Errors based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
Anywhere
The printer does not start up at all by
turning the power On.
Symptoms Failed Part Check Point Remedies
Panel Board/
Panel FFC
1. Check if the Panel FFC is correctly connected to CN1 on
the Panel Board and CN6 on the Main Board.
CN1
Panel Board
1. Correctly connect the Panel FFC to CN1 on
the Panel Board and CN6 on the Main Board.
Panel FFC
CN6
Main Board
2. Check if the Panel FFC is damaged. 2. Replace the Panel FFC with a new one.
3. Check if the Panel Board is damaged. 3. Replace the Panel Board with a new one.
Troubleshooting Troubleshooting 13
EPSON Stylus Photo R340/350 Revision A
Table 1-4. Troubleshooting of Communication Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
Anywhere
The printer does not start up at all by
turning the power On.
Symptoms Failed Part Check Point Remedies
Power Supply
Board Assy.
1. Check if the Power Supply Board cable is correctly
connected to CN1 on the Main Board.
CN1
1. Correctly connect the Power Supply Board
cable to CN1 on the Main Board.
• Occurrence
Timing:
During
operation
• CR Position:
---
The initialization sequence at power-on
is performed properly. However, a
communication error occurs (an error
message is displayed on STM3 screen)
when a print job is sent to the printer.
2. Check if the Power Supply Board cable or the Power
Supply itself is damaged.
Power Supply Board
Cable
Power Supply
Assy.
USB Cable 1. Check if the printer is correctly connected to the
computer with a USB cable.
Printer driver 1. Check if the Stylus Photo R340/350 driver is used for
the print job.
Main Board 1. Verify that the model name written in the EEPROM on
the Main Board is correct.
2. Replace the Power Supply Assy. with a new
one.
* If the problem still occurs after performing
the above remedies, replace the Main Board
Assy. with a new one.
1. Correctly connect the printer to the computer
with a USB cable.
1. Install the Stylus Photo R340/350 printer
driver on the computer.
1. Correct the model name stored on the
EEPROM using the Market Setting menu in
the Adjustment Program.
Troubleshooting Troubleshooting 14
EPSON Stylus Photo R340/350 Revision A
Table 1-5. Troubleshooting of Ink-related Errors (Message 1 and 7) based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
Home position
An ink-related error occurs when the
Carriage returns to the home position.
Symptoms Failed Part Check Point Remedies
Ink Cartridge 1. Check if the memory chip on the cartridge is chipped or
1. Replace the Ink Cartridge with a new one.
damaged.
Memory Chip
CSIC Connector 1. Check if the CSIC Connector is damaged. 1. Replace the Carriage Unit with a new one.
CSIC Connector
CSIC Board 1. Check if the Head cable is correctly connected to the
connector on the CSIC Board.
CSIC Board
Connector
Head Cable
1. Correctly connect the Head cable to the
connector on the CSIC Board.
2. Check if the CSIC Board is damaged. 2. Replace the CSIC Board with a new one.
Troubleshooting Troubleshooting 15
EPSON Stylus Photo R340/350 Revision A
Table 1-6. Troubleshooting of Fatal Errors based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
---
The CR Motor does not start to operate
at all by turning the power On.
The Carriage Unit hits against the
Change Lever which has inclined toward
the front of the printer at power-on.
Symptoms Failed Part Check Point Remedies
CR Motor 1. Check if the CR Motor cable is correctly connected to
CN11 on the Main Board.
CN11
1. Correctly connect the CR Motor cable to
CN11 on the Main Board.
2. Check the CR Motor if it works properly. 2. Replace the CR Motor with a new one.
PF Motor 1. Check if the PF Motor cable is correctly connected to
CN10 on the Main Board.
1. Correctly connect the PF Motor cable to
CN10 on the Main Board.
CN10
2. Check the PF Motor resistance with a tester if it is 3.0 Ω.
2. Replace the PF Motor with a new one.
See Table 1-1 on page 8.
Ink System 1. Check if the Compression Spring 2.36 in the Change
1. Replace the Ink System with a new one.
Lever has not come off.
Change Lever
Compression
Spring 2.36
Troubleshooting Troubleshooting 16
EPSON Stylus Photo R340/350 Revision A
Table 1-6. Troubleshooting of Fatal Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
---
The Carriage Unit hits against the Upper
Paper Guide which has come off the
Main Frame at power-on.
Symptoms Failed Part Check Point Remedies
Upper Paper Guide 1. Check if the Upper Paper Guide has not come off the
1. Install the Upper Paper Guide correctly.
Main Frame.
Upper Paper Guide
The Carriage Unit hits against the right
side of the Main Frame at power-on.
CR Scale 1. Check if the CR Scale gets dirt. 1. Wipe off the dirt completely or replace the
CR Scale with a new one if it is stained badly.
2. Check if the CR Scale is damaged. 2. Replace the CR Scale with a new one.
3. Check if the CR Scale has come off or it properly runs
through the slit of the CR Encoder Sensor.
3. Install the CR Scale correctly.
* If the above does not solve the problem, try
the following actions one by one in the
CR Scale
order given.
1. Replace the Main Board Assy. with a new
one.
2. Replace the CR Encoder Sensor with a
new one.
CR Encoder
Sensor
Carriage Unit
Troubleshooting Troubleshooting 17
EPSON Stylus Photo R340/350 Revision A
Table 1-6. Troubleshooting of Fatal Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
---
The Carriage Unit hits against the right
side of the Main Frame at power-on.
Symptoms Failed Part Check Point Remedies
Head Cable 1. Check if the Head cable is correctly connected to the
connector on the CR Encoder Sensor Board and CN9 on
the Main Board.
CN9
1. Correctly connect the Head cable to the
connector on the CR Encoder Sensor Board
and CN9 on the Main Board.
Connector
2. Check if the Head Cable is damaged. 2. Replace the Head Cable with a new one.
Head Cable
Troubleshooting Troubleshooting 18
EPSON Stylus Photo R340/350 Revision A
Table 1-7. Troubleshooting of Paper Out Error based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
The LD Roller shaft rotates to feed
paper, but the Hopper does not operate.
Symptoms Failed Part Check Point Remedies
ASF Assy. 1. Check the Hopper if it works properly during feeding
paper.
Compression
Spring 2.51
Hopper
1. Reattach the Compression Spring 2.51
between the ASF Frame and the Hopper
properly.
The LD Roller shaft rotates properly, but
the paper is not fed at all.
Shaft Assy. Holder 1. Check the LD Roller surface if it is free of paper dust. 1. Wipe the paper dust on the LD Roller with a
clean cloth moistened with alcohol.
* If the problem still occurs after performing
the above remedies, replace the LD Roller
with a new one.
LD Roller
Troubleshooting Troubleshooting 19
EPSON Stylus Photo R340/350 Revision A
Table 1-7. Troubleshooting of Paper Out Error based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
The PF Motor drive cannot be
transmitted to the LD Roller Shaft.
Symptoms Failed Part Check Point Remedies
Shaft Assy. Holder 1. Check if the Extension Spring 0.143 in the clutch
mechanism has not come off.
Extension Spring 0.143
Clutch Teeth
Guide Pin on the LD Roller Shaft
2. Check if the Clutch is properly engaged with the LD
Roller Shaft with the guide pin on the shaft.
1. Attach the Extension Spring 0.143 to the
clutch mechanism properly.
2. Properly set the hole of the Clutch onto the
guide pin of the LD Roller Shaft.
3. Check if the Clutch teeth are damaged. 3. Replace the Shaft Assy. Holder with a new
one.
4. Check if the Clutch is damaged. 4. Replace the Shaft Assy. Holder with a new
one.
Ink System 1. Check if the Compression Spring 2.36 in the Change
1. Replace the Ink System with a new one.
Lever has not come off.
Change Lever
Compression
Spring 2.36
The LD Roller Shaft cannot be set at the
Ink System 1. Check if the tip of the Change Lever is damaged. 1. Replace the Ink System with a new one.
ASF home position and paper is always
fed from the ASF Assy.
Troubleshooting Troubleshooting 20
EPSON Stylus Photo R340/350 Revision A
Table 1-8. Troubleshooting of Paper Jam Errors based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
Anywhere
other than
home position
Paper feeding operation is performed
properly, but the paper cannot be sent
into the printer.
Symptoms Failed Part Check Point Remedies
ASF Assy. 1. Check if the ASF Assy. is properly installed. 1. Reassemble the ASF Assy. correctly.
2. Check the Paper Back Lever if it works properly during
feeding paper.
Torsion Spring
6.45
Paper Back Lever
2. Reinstall the Paper Back Lever and the
Torsion Spring 6.45 correctly.
Shaft Assy. Holder 1. Check if the Torsion Spring 0.22 is properly attached. 1. Reinstall the PE Sensor Lever and the
Torsion Spring 0.22 correctly.
Torsion Spring 0.22
Multi-feed occurs frequently. ASF Assy. 1. Check the Retard Roller Assy. if it works properly during
feeding paper.
Retard
Roller Assy.
Extension
Spring 0.45
1. Attach the Extension Spring 0.45 properly to
the backside of the Retard Roller Assy.
Troubleshooting Troubleshooting 21
EPSON Stylus Photo R340/350 Revision A
Table 1-8. Troubleshooting of Paper Jam Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
Anywhere
other than
home position
Paper is fed into the printer, but it is
ejected immediately.
Symptoms Failed Part Check Point Remedies
PE Sensor 1. Check if the Torsion Spring 0.22 is properly attached. 1. Engage the PE Sensor Lever and the Torsion
Spring 0.22 properly.
PE Sensor
Torsion Spring 0.22
• Occurrence
Timing:
During
operation
• CR Position:
---
Paper edge cannot go through between
the EJ Roller and the Star Wheels.
Front Paper Guide
Porous Pad
2. Check if the PE Sensor cable is correctly connected to
CN4 on the Main Board.
CN4
3. Check if the PE Sensor is damaged. 3. Replace the PE Sensor with a new one.
1. Check if the Front Paper Guide Porous Pad is properly
installed.
Front Paper Guide Porous Pad
2. Correctly connect the PE Sensor cable to
CN4 on the Main Board.
1. Install the Front Paper Guide Porous Pad
properly.
Troubleshooting Troubleshooting 22
EPSON Stylus Photo R340/350 Revision A
Table 1-8. Troubleshooting of Paper Jam Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
Paper edge cannot go through between
the EJ Roller and the Star Wheels.
Symptoms Failed Part Check Point Remedies
EJ Frame Assy.* 1. Check if the Star Wheel Holder has not come off. 1. Install the Star Wheel Holder correctly.
EJ Frame Assy.
2. Check if the EJ Frame Assy. is properly installed. 2. Install the EJ Frame Assy. correctly.
3. Check the EJ Frame Assy. for deformation (if it warped
downward).
Spur Gear 41.38* 1. Check if the Spur Gear 41.38 is damaged. 1. Replace the Spur Gear 41.38 with a new one.
EJ Roller Assy.* 1. Check if the EJ Roller Assy. is properly installed. 1. Install the EJ Roller Assy. correctly.
EJ Roller Assy.
Star Wheel Holder
3. Replace the EJ Frame Assy. with a new one.
Spur Gear 41.38
* Jammed paper sometimes contacts with the Print Head and can damage the head.
Troubleshooting Troubleshooting 23
EPSON Stylus Photo R340/350 Revision A
Table 1-8. Troubleshooting of Paper Jam Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
* Jammed paper sometimes contacts with the Print Head and can damage the head.
Top edge of paper cannot be sent to the
PF Roller.
Symptoms Failed Part Check Point Remedies
Upper Paper
Guide*
1. Check if the Upper Paper Guide has not come off the
Main Frame.
Upper Paper Guide
1. Install the Upper Paper Guide correctly.
Troubleshooting Troubleshooting 24
EPSON Stylus Photo R340/350 Revision A
Table 1-9. Troubleshooting of Errors at Opening the CD/DVD Guide based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
Home position
The CD/DVD guide open error occurs at
power-on even though the CDR Guide
Assy. is held closed.
Symptoms Failed Part Check Point Remedies
Upper Housing 1. Check if the Tray/CDR Sensor flag on the Upper Housing
is broken.
Flag
1. Replace the Upper Housing with a new one.
Tray/CD-R Sensor 1. Check if the Tray/CDR Sensor cable is correctly
connected to CN2 on the Main Board.
CN2
2. Check if the Tray/CDR Sensor is damaged. 2. Replace the Tray/CDR Sensor with a new
Tray/CD-R Sensor
3. Check if the Tray/CDR Sensor cable is broken. 3. Replace the Tray/CDR Sensor with a new
1. Correctly connect the Tray/CDR Sensor cable
to CN2 on the Main Board.
one.
one.
Troubleshooting Troubleshooting 25
EPSON Stylus Photo R340/350 Revision A
Table 1-9. Troubleshooting of Errors at Opening the CD/DVD Guide based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
Home position
The CD/DVD guide open error occurs at
power-on even though the CDR Guide
Assy. is held closed.
Symptoms Failed Part Check Point Remedies
Stacker Lock 1. Check if the Stacker Lock and the Compression Spring
5.1 are properly engaged.
Compression
Spring 5.1
Stacker Lock
1. Engage the Stacker Lock and the
Compression Spring 5.1 properly.
CDR Sensor Lever 2. Check if the CDR Sensor Lever and the Torsion Spring
4.26 are properly engaged.
Torsion Spring
4.26
CDR Sensor Lever
Main Board 1. Check if any of the elements on the Main Board is
damaged.
2. Engage the CDR Sensor Lever and the
Torsion Spring 4.26 properly.
1. Replace the Main Board with a new one.
Troubleshooting Troubleshooting 26
EPSON Stylus Photo R340/350 Revision A
Table 1-10. Troubleshooting of Name Card Insertion Error based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
At power-on
• CR Position:
Anywhere other
than home
position
• Occurrence
Timing:
During
operation
• CR Position:
---
The name card insertion error occurs at
power-on.
Even though a name card is properly
loaded in landscape orientation, the card
edge cannot be sent to the PF Roller.
Symptoms Failed Part Check Point Remedies
PE Sensor 1. Check if the PE Sensor cable is correctly connected to
CN4 on the Main Board.
CN4
2. Check if the PE Sensor is damaged. 2. Replace the PE Sensor with a new one.
PW Sensor 1. Check if the PW Sensor FFC is correctly connected to the
connectors on the PW Sensor and the CR Encoder Board.
CR Encoder Board
1. Correctly connect the PE Sensor cable to
CN4 on the Main Board.
1. Correctly connect the PW Sensor FFC to the
connectors on the PW Sensor and the CR
Encoder Board.
Connector
2. Check the PW Sensor FFC for any damage. 2. Replace the PW Sensor FFC with a new one.
3. Check the PW Sensor for any damage. 3. Replace the PW Sensor with a new one.
Main Board 1. Check if any of the elements on the Main Board is
damaged.
PW Sensor FFC
1. Replace the Main Board with a new one.
Troubleshooting Troubleshooting 27
EPSON Stylus Photo R340/350 Revision A
Table 1-11. Troubleshooting of CD/DVD Tray Errors based on Observed Symptom
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
A CD/DVD Tray error occurs when
attempting to print on a CD or DVD
even though the CDR Tray is properly
attached.
Symptoms Failed Part Check Point Remedies
CD-R Tray 1. Check if the contact portion of the CDR Tray Sensor on
the CDR Tray is broken.
Contact Portion
Tray Sensor Lever 2. Check if the Tray Sensor Lever and the Torsion Spring
2.8 are properly engaged.
Tray Sensor Lever
1. Replace the CDR Tray Sensor with a new
one.
2. Engage the Tray Sensor Lever and the
Torsion Spring 2.8 properly.
Torsion
Spring 2.8
Troubleshooting Troubleshooting 28
EPSON Stylus Photo R340/350 Revision A
Table 1-11. Troubleshooting of CD/DVD Tray Errors based on Observed Symptom (continued)
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
The CDR Tray center detection
sequence is canceled and the CDR Tray
is ejected.
Symptoms Failed Part Check Point Remedies
CDR Tray 1. Check the white marking on the CDR Tray for any paper
dust or contamination.
White Marking
1. Clean the white marking area on the CDR
Tray.
PW Sensor 1. Check the PW Sensor for paper dust or ink stain. 1. Clean the surface of the PW Sensor.
PW Sensor
2. Check if the PW Sensor FFC is correctly connected to the
connectors on the PW Sensor and the CR Encoder Board.
2. Correctly connect the PW Sensor FFC to the
connectors on the PW Sensor and the CR
Encoder Board.
CR Encoder Board
Connector
PW Sensor FFC
3. Check the PW Sensor FFC for any damage. 3. Replace the PW Sensor FFC with a new one.
4. Check the PW Sensor for any damage. 4. Replace the PW Sensor with a new one.
Main Board 1. Check if any of the elements on the Main Board is
1. Replace the Main Board with a new one.
damaged.
Troubleshooting Troubleshooting 29
EPSON Stylus Photo R340/350 Revision A
1.3.2 Troubleshooting by Observed Symptom
Table 1-12. Multi-Feed Occurs with No Error Messages displayed on the LCD or STM3 screen
Occurrence
Timing
CR Position
• Occurrence
Timing:
During
operation
• CR Position:
---
Multiple sheets are always fed at a time
from the ASF Assy., but no error
messages are displayed on the LCD or
the STM3 screen.
Symptoms Failed Part Check Point Remedies
ASF Assy. 1. Check the Retard Roller Assy. if it works properly during
feeding paper.
Extension
Spring 0.45
1. Attach the Extension Spring 0.45 properly to
the backside of the Retard Roller Assy.
2. Check the Paper Back Lever if it works properly during
feeding paper.
Torsion Spring
6.45
Paper Back Lever
2. Reinstall the Paper Back Lever and the
Torsion Spring 6.45 correctly.
Troubleshooting Troubleshooting 30
EPSON Stylus Photo R340/350 Revision A
Table 1-13. Abnormal Noises are Produced during Operation
Occurrence
Timing
CR Position
• Occurrence
Timing:
Anytime
• CR Position:
Anywhere
Problems Description Failed Part Check Point Remedies
• Dot missing
Mixed colors,
Blank pages
Printing operations are performed
properly, but abnormal noises are
produced after turning the power On and
during operations.
The bottom of the Carriage Unit comes
into contact with the surface of the Front
Frame.
The Carriage Unit hits against the Upper
Paper Guide while the Carriage Unit is
moving.
Ink cannot be discharged from the Print
Head to the Cap.
Symptoms Failed Part Check Point Remedies
Carriage Unit 1. Check if the CR Guide Shaft is properly lubricated. 1. Wipe off the remaining oil on the CR Guide
Shaft and re-lubricate the shaft properly.
Ink System 1. Check if the Change Lever moves smoothly. 1. Replace the Ink System with a new one.
EJ Frame Assy. 1. Check if the EJ Frame Assy. has warped upward. 1. Replace the EJ Frame Assy. with a new one.
Upper Paper Guide 1. Check if the Upper Paper Guide has not come off the
Main Frame.
1. Install the Upper Paper Guide correctly.
Table 1-14. Print Quality Problems
Ink System
(Cap Unit)
1. Check the shielding rubber of the Cap Unit for any
damage or foreign material.
Shielding Rubber
1. Remove the foreign material from the
shielding rubber.
* If the Ink System is damaged, replace it
with a new one.
2. Check if the Compression Spring 2.53 is properly
attached.
Compression
Spring 2.53
2. Replace the Ink System with a new one.
Troubleshooting Troubleshooting 31
EPSON Stylus Photo R340/350 Revision A
Table 1-14. Print Quality Problems (continued)
Problems Description Failed Part Check Point Remedies
• Dot missing
Mixed colors
Blank Pages
• Too much ink is
discharged
Although ink is properly discharged
from the Print Head to the Cap, the
problem still occurs even after executing
a head cleaning or replacing ink
cartridges.
Ink is properly discharged from the Print
Head to the Cap, but nothing is printed
even after executing a head cleaning or
replacing ink cartridges. Or too much
ink is discharged.
Print Head 1. Check if the printer recovers from the error by the head
cleaning or ink cartridges replacement.
2. Check the Print Head for any damage. 2. Replace the Print Head with a new one.
Head Cleaner 1. Check the Head Cleaner for paper dust or deformation. 1. Replace the Ink System Unit with a new one.
Main Board 1. Check the Main Board for any damage. 1. Replace the Main Board Assy. with a new
Head Cable 1. Check if the Head Cable is correctly connected to the
connector on the Print Head and CN7/CN8 connectors on
the Main Board.
CN8
CN7
1. Execute the head cleaning and ink cartridges
replacement the specified number of times. If
the problem still occurs, replace the Print
Head with a new one.
one.
1. Correctly connect the Head Cable to the
connector on the Print Head and CN7/CN8
connectors on the Main Board.
Head Cable
Connector
Print Head 1. Check if the printer recovers from the error by the head
cleaning or ink cartridges replacement.
Main Board 1. Check the Main Board for any damage. 1. Replace the Main Board Assy. with a new
1. Execute the head cleaning and ink cartridges
replacement the specified number of times. If
the problem still occurs, replace the Print
Head with a new one.
one.
Troubleshooting Troubleshooting 32
EPSON Stylus Photo R340/350 Revision A
Table 1-14. Print Quality Problems (continued)
Problems Description Failed Part Check Point Remedies
• White bands/
Color
unevenness
Vertical bands (perpendicular to the CR
moving direction) appear on printouts
with inconsistencies in density.
CR Moving
Direction
(Note)
If the problem still occurs after the all
actions to remedy it have taken, replace
the CR Motor with a new one.
Horizontal bands (horizontal to the CR
moving direction) appear on printouts.
CR Moving
Direction
Print Head 1. Print a nozzle check pattern and examine the printout
patterns for any missing segments or broken lines.
1. Run a head cleaning and then print a nozzle
check pattern again. (See Chapter 3 for
details on the adjustments) If the problem still
occurs, replace the Print Head with a new
one.
Adjustment 1. If the problem occurs in the Bi-D mode, verify that the
Bi-D adjustment is made properly.
1. Perform the Bi-D adjustment to align the bidirectional print positions. (See Chapter 3 for
details on the adjustments)
Carriage Unit/
CR Guide Shaft
1. Check the CR Guide Shaft surface for any foreign
matters.
2. Check if the CR Guide Shaft is properly secured to the
1. Remove the foreign matters on the surface of
the CR Guide Shaft.
2. Install the CR Guide Shaft correctly.
Main Frame with the CR Shaft Fixing Spring.
3. Check if the CR Guide Shaft surface is properly
lubricated.
3. Wipe off the remaining oil on the CR Guide
Shaft with a dry soft cloth, and re-lubricate
the shaft with G-63 oil. (See Chapter 4 for
details on the lubrication)
4. Check the CR Guide Shaft surface for any damages. 4. Replace the CR Guide Shaft with a new one.
EJ Frame Assy. 1. Check if the EJ Frame Assy. surface stays in a horizontal
1. Replace the EJ Frame Assy. with a new one.
position.
Print Head 1. Print a nozzle check pattern and examine the printout
patterns for any missing segments or broken lines.
1. Run a head cleaning and then print a nozzle
check pattern again. (See Chapter 3 for
details on the adjustments) If the problem still
occurs, replace the Print Head with a new
one.
Printer driver and
Special paper
1. Check if appropriate type of paper is used in accordance
with the printer driver setting.
1. Use an appropriate type of paper in
accordance with the printer driver setting.
PF Roller Assy. 1. Check the PF Roller surface for any foreign matters. 1. Clean the surface of the PF Roller properly
with a soft cloth.
(Note)
If the problem still occurs after the all
actions to remedy it have taken, replace
the PF Motor with a new one.
PF Roller Assy.
2. Check if the PF Roller Assy. is damaged. 2. Replace the PF Roller Assy. with a new one.
Troubleshooting Troubleshooting 33
EPSON Stylus Photo R340/350 Revision A
Table 1-14. Print Quality Problems (continued)
Problems Description Failed Part Check Point Remedies
• White bands/
Color
unevenness
A vertical (perpendicular to the CR
moving direction) white line (trace of
Star Wheel) appears on printouts.
EJ Frame Assy. 1. Check if the Star Wheel Holder has not come off. 1. Install the Star Wheel Holder correctly.
• Displacement
of the print start
position
EJ Roller Assy. 1. Check if the EJ Roller Assy. has not come off the Printer
Printouts are faint Printer driver and
Special paper
Print Head 1. Check if the Head ID written in the EEPROM is correct
Printing operations are performed
properly, but the top margin is narrower
than usual.
Shaft Assy. Holder 1. Check the LD Roller surface if it is free of paper dust. 1. Wipe the paper dust on the LD Roller with a
EJ Frame Assy.
2. Check if the EJ Frame Assy. surface stays in a horizontal
position.
Mechanism.
1. Check if appropriate type of paper is used in accordance
with the printer driver setting.
using the Adjustment Program.
LD Roller
Star Wheel Holder
2. Replace the EJ Frame Assy. with a new one.
1. Install the EJ Roller Assy. correctly.
1. Use an appropriate type of paper in
accordance with the printer driver setting.
1. Write the correct 15-digit Head ID to the
EEPROM with the Adjustment Program.
clean cloth moistened with alcohol.
* If the problem still occurs after performing
the above remedies, replace the LD Roller
with a new one.
Troubleshooting Troubleshooting 34
EPSON Stylus Photo R340/350 Revision A
Table 1-14. Print Quality Problems (continued)
Problems Description Failed Part Check Point Remedies
• Ink smudges
• Wrinkles
Ink smudges appear on the top and
bottom edges and backside of printouts.
Ink smudges appear on non-printed area
of printouts.
Top side of printouts is wrinkled. ASF Assy. 1. Check if the Hopper Pad is properly attached to the
Front Paper Guide
Porous Pad
Front Paper Guide 1. Check the Front Paper Guide for any ink stains. 1. Clean the Front Paper Guide properly with a
EJ Roller
Assy.
PF Roller
Assy.
Print Head 1. Check the Print Head Cover for any ink drops. 1. Clean the Print Head Cover properly with a
Upper Paper Guide 1. Check the Upper Paper Guide for any ink stains. 1. Clean the Upper Paper Guide properly with a
EJ Frame
Assy.
1. Check if any part of the Front Paper Guide Porous Pad is
separated from the Front Paper Guide.
Front Paper Guide Porous Pad
Front Paper Guide
1. Check the EJ Roller Assy. for any ink stains. 1. Clean the EJ Roller Assy. properly with a soft
1. Check the PF Roller Assy. for any ink stains. 1. Clean the PF Roller Assy. properly with a
1. Check the EJ Frame Assy. for any ink stains. 1. Clean the EJ Frame Assy. properly with a soft
Hopper.
1. Bring the Front Paper Guide Porous Pad into
intimate contact with the Front Paper Guide.
* Replace the pad with a new one if it is
badly deformed.
soft cloth.
cloth.
soft cloth.
soft cloth.
soft cloth.
cloth.
1. Replace the ASF Assy. with a new one.
Hopper Pad
Troubleshooting Troubleshooting 35
DISASSEMBLY AND ASSEMBLY
CHAPTER
2
EPSON Stylus Photo R340/350 Revision A
2.1 Overview
This chapter describes procedures for disassembling the main components of the Stylus
Photo R340/350. Unless otherwise specified, disassembled units or components can be
reassembled by reversing the disassembly procedure.
Procedures which, if not strictly observed, could result in personal injury are described
under the heading “WARNING”.
"CAUTION" signals a precaution which, if ignored, could result in damage to
equipment.
Important tips for procedures are described under the heading “CHECK POINT”.
If the assembly procedure is different from the reversed disassembly procedure, the
correct procedure is described under the heading “REASSEMBLY”.
Any adjustments required after reassembly of components or parts are described under
the heading “ADJUSTMENT REQUIRED”.
When you have to remove any parts or components that are not described in this
chapter, refer to the exploded diagram supplied with a separate parts list.
Read the precautions described in the next section before starting.
2.1.1 Precautions
The precautions in the two lists below (WARNING and CAUTION) must always be
followed during disassembly and assembly.
W A R N I N G
C A U T I O N
Disconnect the power cable before disassembling or assembling
the printer.
If you need to work on the printer with power applied, strictly
follow the instructions in this manual.
Always wear goggles to protect your eyes from splattering of
ink. If ink gets in your eye, flush the eye with fresh water and see
a doctor immediately.
Always wear gloves for disassembly and reassembly to avoid
injury from sharp metal edges.
Use static discharge equipment such as anti-static wrist straps
when accessing internal components to protect sensitive
electronic components and circuitry.
Never touch the ink or wasted ink with bare hands. If ink comes
into contact with your skin, wash it off with soap and water
immediately. If irritation occurs, contact a physician.
Make sure the tip of the waste ink tube is located at correct
position when reassembling the waste ink tube, or it will cause
ink leakage.
When transporting the printer on which the ink cartridges have
been installed, secure the cartridges with pieces of tape to the
printer cover so that they do not move from the home position.
Use only recommended tools for disassembly, assembly or
adjustment of the printer. See Table 2-1 “Tools” on page 38.
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.
When tightening screws, be sure to observe the specified
tightening torque.
Apply lubricants and adhesives as specified. (See Chapter 4 for
details.)
Make the specified adjustments when you disassemble the
printer. (See Chapter 3 for details.)
Disassembly and Assembly Overview 37
EPSON Stylus Photo R340/350 Revision A
2.1.2 Tools
Use only specified tools to avoid damaging the printer.
Table 2-1. Tools
Tool Supplier Part Number
Phillips Screw Driver (No. 0) EPSON 1080531
Phillips Screw Driver (No. 1) EPSON 1080530
Phillips Screw Driver (No. 2) EPSON 1080532
Tweezers EPSON 1080561
Acetate Tape EPSON 1003963
2.1.3 Work Completion Checklist
Whenever the printer is serviced, use the checklist shown below to confirm all work is
complete properly and the printer is ready to be returned to the user.
Table 2-2. Work Completion Checklist
Classification Item Check Point Status
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Main Unit
Self-test Is the operation normal?
On-line Test
Print Head
Carriage
Mechanism
Is the printing attempt
successful?
Is ink discharged normally from
all the nozzles?
Does it move smoothly?
Is there any abnormal noise
during its operation?
Are there any foreign objects or
dirt on the CR Guide Shaft?
Table 2-2. Work Completion Checklist
Classification Item Check Point Status
Carriage
Mechanism
Main Unit
Paper Feeding
Mechanism
Adjustment
Lubrication
Function ROM Version
Packing
Others
Specified
Adjustment
Specified
Lubrication
Ink Cartridge
Protective
Materials
Attachments,
Accessories
Is the CR Motor at the correct
temperature? (Not too hot to
touch?)
• Is paper fed smoothly?
• No paper jamming?
• No paper skew?
• No multiple-sheet feeding?
• No abnormal noise?
Is the PF Motor at the correct
temperature? (Not too hot to
touch?)
Is the paper path free of any
obstructions?
Are all the adjustments correctly
completed?
Has lubrication been applied at
the specified points?
Is the amount of lubrication
correct?
Is it the latest version?
Version:
Are the ink cartridges installed
correctly?
Have all relevant protective/
packing materials been attached
to the printer?
Have all the relevant items been
included in/ returned to the
package?
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Checked
Not necessary
Disassembly and Assembly Overview 38
EPSON Stylus Photo R340/350 Revision A
2.2 Ensuring the Quality of Disassembled/ Reassembled Printer Mechanism
Removing the Lower Housing from the Printer Mechanism has been basically
prohibited for the conventional low-end printers. Because the Main Frame of those
printers is not so strong that it may be deformed due to the force exerted on it during
removing or reinstalling the Lower Housing. Whenever the Ink System or the PF
Motor of the low-end printers must be replaced, we have recommended to replace the
Printer Mechanism together with the Lower Housing.
However, on the other hand, the Stylus Photo R340/350 require to remove the Lower
Housing from the Printer Mechanism to replace the Waste Ink Pad or the Ink System.
Whenever the Printer Mechanism is separated from the Lower Housing, be sure to
perform the reassembly following the cautions and instructions described in this
section to ensure the quality of reassembled printers.
Cautions on Disassembly/Reassembly of Printer Mechanism
1. When the Printer Mechanism is removed together with the Lower Housing
• Do not hold the CR Guide Plate to lift or move the removed components,
or the CR Guide Plate and the Main Frame may be deformed and
adversely affect the print quality.
• Never touch the CR Guide Shaft and the nozzles on the head.
2. When the Printer Mechanism is separated from the Lower Housing
• Make sure to reinstall the Printer Mechanism to the Lower Housing
carefully observing the correct positions described in the next bulleted
paragraphs.
• Be sure to first remove the Main Frame Support Plate, and then remove
the PF Roller Assy., EJ Roller Assy., and the Front Paper Guide.
• Make sure the tip of the Waste Ink Tube is located at correct position.
• Make sure that the connector cable of the Tray/CD-R Sensor are properly
routed.
• Make sure that the APG gears are properly engaged.
Printer Mechanism Positioning Requirements
[Purpose]
Displacement of the Printer Mechanism can cause print quality or any other
troubles. The correct installation position must be ensured by carefully
checking the specified points in relation to the Lower Housing.
[When Servicing]
Make sure there is no gap between the Main Frame and the Lower Housing.
[Tip]
To ensure the correct position of the Printer Mechanism, it must be checked in
X, Y, and Z directions as described below.
[X direction]
• Make sure that the bottom edge of the Main Frame is properly inserted
into the groove on the Lower Housing.
• Make sure there is no gap between the Main Frame and the Lower
Housing.
[Y direction]
• Make sure that the notches of the Main Frame are properly engaged with
the protrusions on the Lower Housing.
[Z direction]
• Make sure there is no gap between the Main Frame and the Lower
Housing.
• Make sure that the Printer Mechanism is properly secured with the four
hooked tabs (two on the left side, one on the right side, and one on the
right front side).
CR Guide Plate Perpendicularity Requirements
[Purpose]
The L-shaped CR Guide Plate supports the Carriage Unit perpendicular to the
CR Shaft. Any deformation of the CR Guide Plate can cause an inclination of
the Carriage Unit resulting in print troubles or a malfunction of the printer, so
the perpendicularity of the CR Guide Plate must be ensured.
[When Servicing]
Make sure to hold the Main Frame by the specified points to prevent it from
deforming.
Disassembly and Assembly Ensuring the Quality of Disassembled/Reassembled Printer Mechanism 39
EPSON Stylus Photo R340/350 Revision A
Caution on Attaching the ASF Assy., Main Board Assy., and Upper Paper
Guide
[Purpose]
To prevent the Main Frame from deforming due to the force exerted on it
during attaching the above three parts.
[When Servicing]
When attaching any of the three parts, be sure to support the Main Frame or
components behind the part with your hand so that the force to attach the part
is not exerted on the frame from only one direction.
3. CD-R Guide Assy.
CD-R Guide Assy. Perpendicularity Requirements
[Purpose]
Any deformation of the CD-R Guide Assy. can cause print troubles, so the
perpendicularity of the CD-R Guide Assy. must be ensured.
[When Servicing]
Disassembling and reassembling the CD-R Guide Assy. should be performed
with extreme caution.
How to Finally Ensure Quality of Reassembled Printers
Make some test prints using the Adjustment Program. The quality of the
reassembled printer is ensured if the print results are satisfactory.
Disassembly and Assembly Ensuring the Quality of Disassembled/Reassembled Printer Mechanism 40
EPSON Stylus Photo R340/350 Revision A
2.3 Disassembly
The flowchart below lists the step-by-step disassembly procedures. When disassembling each unit, refer to the page number shown in the figure.
Start
Removing the Paper Support
Assy. (p.42)
Removing the Upper Housing
(p.48)
Removing the Main Board
Assy. (p.54)
Removing the ASF Assy.
(p.58)
Removing the Shaft Assy.
Holder (p.62)
Removing the Printer
Mechanism (p.70)
Removing the Power Supply
Assy. (p.74)
Removing the Waste Ink Pads
(p.75)
Removing the Left Housing
(p.43)
Removing the Rear Housing
(p.50)
Removing the CR Motor
(p.66)
Removing the Ink System
(p.88)
Removing the Right Housing
(p.44)
Removing the Stacker Assy.
(p.51)
Removing the PF Motor (p.95)
Removing the Panel Board/
LCD Module (p.46)
Removing the Front Paper
Guide Porous Pads (p.52)
Removing the APG Assy.
(p.77)
Removing the Carriage Unit
(p.78)
C H E C K
P O I N T
Since a prototype was used to illustrate these
disassembly and assembly procedures, the
appearance of some parts may differ from those
on an actual product. The procedures
themselves, however, are accurate for the retail
model.
Removing the Print Head
(p.67)
Removing the Upper Paper
Guide (p.69)
Removing the Print Head
(p.67)
Removing the Stacker Assy.
(p.51)
Removing the Lower Housing
(p.76)
NOTE 1: Parts or units indicated in do not mean that they can be omitted to disassemble. They also should
NOTE 2: To remove the part or component shown in a green box, the parts or components in yellow boxes located
be disassembled for disassembling the following parts or units in the flowchart.
just above the green box must be removed.
Removing the CD-R Guide
Assy. (p.84)
Removing the Front Paper
Guide and EJ Roller Assy. (p.91)
Removing the PF Roller Assy.
(p.96)
Removing the Upper Paper
Guide (p.69)
Figure 2-1. Removing Procedure Flowchart
Disassembly and Assembly Disassembly 41
EPSON Stylus Photo R340/350 Revision A
2.3.1 Removing the Paper Support Assy.
Illustration
Paper Support Assy.
Guide Pins
Figure 2-2. Removing the Paper Support Assy.
Parts/Components must be removed to remove the Paper Support Assy.
None
Disassembly Procedure
1. Release the two guide pins ( ) that secure the Paper Support Assy. and
remove it.
Disassembly and Assembly Disassembly 42
EPSON Stylus Photo R340/350 Revision A
2.3.2 Removing the Left Housing
Illustration
Upper Housing
C.B.P 3x8 (6-8kgf.cm)
Left Housing (inside)
Left Housing
Hooked Tab
Attaching Position
Lower Housing
Left Side of
the Printer
Parts/Components must be removed to remove the Left Housing.
None
Disassembly Procedure
1. Remove the screw ( ) that secures the Left Housing.
2. Open the Printer Cover.
3. Release the hooked tab of the Lower Housing from inside the housing, and
then push the Left Housing toward the rear of the printer to release the nine
tabs ( ), and remove the Left Housing.
Make sure there is no gap between the Left Housing and the Upper
Housing.
Should be no gap
Figure 2-4. Reinstalling the Left Housing
Hooked Tabs
Figure 2-3. Removing the Left Housing
Disassembly and Assembly Disassembly 43
EPSON Stylus Photo R340/350 Revision A
2.3.3 Removing the Right Housing
Illustration
of the Printer
Hooked Tab
Right Housing (inside)
Card Slot CoverLeft Front Side
Right Housing
Hooked Tab
Parts/Components must be removed to remove the Right Housing.
None
Disassembly Procedure
1. Remove the screw ( ) that secures the Right Housing.
2. Open the Card Slot Cover and release the hooked tab ( ) that secures the
Right Housing.
3. Push the Right Housing toward the rear of the printer to release the ten tabs
( ) and remove the Right Housing.
4. Release the longer leg of the Card Slot Cover Spring from the hooked tab ( )
on the Right Housing and remove the spring.
5. Pull out the lower guide pin ( ) and then the upper guide pin ( ) of the Card
Slot Cover to remove it.
C.B.P 3x8 (6-8kgf.cm)
Card Slot Cover
Hooked Tabs
Guide
Pins
Spring
Figure 2-5. Removing the Right Housing
Disassembly and Assembly Disassembly 44
EPSON Stylus Photo R340/350 Revision A
Reattaching the Card Slot Cover Spring
z Insert the shorter leg of the spring into the groove of the
upper guide pin ( ) of the Card Slot Cover, and secure the
longer leg of the spring by the hooked tab ( ) on the Right
Housing.
Right Housing (inside)
Hooked Tab
2
1
Groove on the Guide Pin
Longer Leg
Figure 2-6. Reattaching the Card Slot Cover Spring
Reinstalling the Right Housing
z Make sure there is no gap between the Right Housing and
the Upper Housing.
Upper Housing
Should be
No Gap
Figure 2-7. Reinstalling the Right Housing
Disassembly and Assembly Disassembly 45
EPSON Stylus Photo R340/350 Revision A
2.3.4 Removing the Panel Board/LCD Module
Illustration (1)
Hooked Tab
Attaching
Position on
the Panel
Board Assy.
Cosmetic Panel
Hooked Tabs
Connectors
Hooked Tabs
Hooked
Tab of the
Cosmetic
Panel
Panel Board Assy.
Parts/Components must be removed to remove the Panel Board/LCD
Module.
None
Disassembly Procedure
1. Open the Printer Cover and Stacker Assy.
C A U T I O N
2. Push the two hooked tab attaching positions on the Panel Board Assy. with a
3. Release the lower four tabs ( ) that secure the Cosmetic Panel and remove it.
C A U T I O N
When performing the next step to remove the Cosmetic Panel, be
careful not to damage the two hooked tabs ( ) of the Cosmetic
Panel.
flat-blade screwdriver to release the two tabs ( ) of the Cosmetic Panel and
then release the upper right tab ( ).
When performing the next step, be careful not to pull the Panel
Board Assy. too much as it is still connected to the printer with the
FFC and the FFC is secured with two-sided tape.
4. Release the two tabs ( ) located at both ends of the Panel Board Assy. with a
flat-blade screwdriver and then release the two tabs ( ) to remove the Panel
Board Assy.
Panel FFC
LCD FFC
5. Disconnect the Panel FFC and the LCD FFC from the connectors.
6. Remove the four screws ( ) that secure the Panel Shield Plate.
Panel Shield Plate Grooves
4
1
C.B.P 3x8 (4-6kgf.cm)
Cable
7. Release the Panel Shield Plate from the two grooves ( ) and remove the
panel pulling it out under the cable.
3
2
Figure 2-8. Removing the Panel Board/LCD Module (1)
Disassembly and Assembly Disassembly 46
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
Panel Board
Hooked Tabs
C.B.P 2x6 (4-6kgf.cm)
1 2
Buttons Buttons
LCD Module
8. Release the four tabs ( ) that secure the Panel Board and remove it.
9. Remove the all buttons from the Housing Panel Assy.
10. Remove the two screws ( ) that secure the LCD Module.
11. Release the LCD Module from the two tabs ( ) by pulling the module
toward the opposite direction of the tabs attached side, and remove the LCD
Module from the Housing Panel Assy.
Tighten the screws to secure the LCD Module in the order
shown in Figure 2-9.
Make sure the four positioning holes of the Panel Board are
aligned with the two screw holes and put onto the two guide
pins.
Positioning Holes
Figure 2-10. Reinstalling the Panel Board
Tighten the screws to secure the Panel Shield Plate in the order
shown in Figure 2-8.
Make sure that the Cosmetic Panel is properly fitted on the
Panel Board Assy.
Hooked Tabs
Figure 2-9. Removing the Panel Board/LCD Module (2)
Disassembly and Assembly Disassembly 47
EPSON Stylus Photo R340/350 Revision A
2.3.5 Removing the Upper Housing
Illustration (1)
Printer Cover
Guide Pins
LCD FFC
Ferrite Core
Two-sided Tapes
Panel FFC
Acetate Tapes
Two-sided Tapes
Hooked Tabs
Parts/Components must be removed to remove the Upper Housing.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module)
Disassembly Procedure
1. Move the Carriage Unit to its home position.
2. Release the two tabs ( ) that secure the Printer Cover and remove it.
3. Open the CD-R Guide Assy.
4. Remove the two pieces of acetate tape that secure the two ferrite cores.
5. Remove the three pieces of two-sided tape that secure the LCD FFC and the
ferrite core to release the LCD FFC.
6. Remove the three pieces of two-sided tape that secure the Panel FFC and the
ferrite core and release the Panel FFC from the three tabs ( ).
C A U T I O N
7. Remove the two screws ( ) that secure the Upper Housing.
Before removing the Upper Housing, make sure that the LCD FFC
and Panel FFC are completely released. If you remove the Upper
Housing with the FFCs secured, they may become deformed by
elongation.
Two-sided Tape
1 2
C.B.S 3x8 (4-6kgf.cm)
Ferrite Core
Figure 2-11. Removing the Upper Housing (1)
Disassembly and Assembly Disassembly 48
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
Rear Side of the Printer
Hooked Tabs
Hooked Tab
Upper Housing
Optical Tube
Sub Slot
Hooked Tab
Guide Pins
8. Lift the front right edge of the Upper Housing to release the Optical Tube Sub
Slot from the two guide pins ( ) on the Housing Slot.
9. Release the four tabs ( ) that secure the Upper Housing with a flat-blade
screwdriver and lift the Upper Housing to remove it, then disconnect the
Panel FFC and the LCD FFC.
10. Release the Panel Grounding Plate from the two guide pins ( ) of the Upper
Housing.
11. Pull out the protruded lower part of the Panel Grounding Plate from the Upper
Housing.
Tighten the screws to secure the Upper Housing in the order
shown in Figure 2-11.
The ferrite core of the Panel FFC should be located at the
position shown in the figure below.
2 ± 2mm
Figure 2-13. Reattaching the Ferrite Core
The ferrite core of the LCD FFC should be located at the
position shown in the figure below.
Align the FFC with the side
Guide Pins
Upper Housing (Left Bottom Side)
surface of the frame.
Figure 2-14. Reattaching the Ferrite Core
Make sure to route the Panel FFC and the LCD FFC as shown
Panel Grounding
Plate
Protrusion of Panel
Grounding Plate
Figure 2-12. Removing the Upper Housing (2)
in the Figure 2-11.
Disassembly and Assembly Disassembly 49
EPSON Stylus Photo R340/350 Revision A
2.3.6 Removing the Rear Housing
Illustration
C.B.P 3x8 (4-6kgf.cm)
Hooked
Tabs
1
C.B.S 3x8 (4-6kgf.cm)C.B.P 3x8 (4-6kgf.cm)
Figure 2-15. Removing the Rear Housing
Parts/Components must be removed to remove the Rear Housing.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing
Rear HousingRear Cover
Disassembly Procedure
1. Remove the screw ( ) that secures the Rear Cover and remove it.
2. Remove the two screws ( ) that secure the Rear Housing.
3. Slightly lift the Rear Housing to release it from the four tabs ( ), and remove
Hooked
Tabs
the Rear Housing.
Tighten the screws to secure the Rear Housing in the order
shown in Figure 2-15.
2
Put the two tabs of the Rear Cover into the notches of the frame.
Tabs
Notches
Figure 2-16. Reattaching the Rear Cover
Disassembly and Assembly Disassembly 50
EPSON Stylus Photo R340/350 Revision A
2.3.7 Removing the Stacker Assy.
Illustration
Stacker Shaft
Parts/Components must be removed to remove the Stacker Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing
Disassembly Procedure
1. Release the shaft of the Stacker Shaft with a flat-blade screwdriver and pull
the left side of the Stacker Assy. toward you to remove the assy.
The two Stacker Paper Stoppers must be securely affixed to the
ribs of the Stacker Assy.
Rib
Figure 2-18. Reattaching the Stacker Paper Stoppers
Make sure to put the guide pin of the Stacker Assy. into the
positioning hole on the frame.
Right Side of the Printer
Stacker Assy. (Center)
Stacker Assy.
Stacker Paper Stoppers
Positioning Hole
Guide Pin
Figure 2-19. Reinstalling the Stacker Assy.
Figure 2-17. Removing the Stacker Assy.
Disassembly and Assembly Disassembly 51
EPSON Stylus Photo R340/350 Revision A
2.3.8 Removing the Front Paper Guide Porous Pads
Illustration
Hole
Front Paper Guide Left Porous Pad
Front Paper Guide Support Porous Pad
Front Paper Guide Porous Pad
Parts/Components must be removed to remove the Front Paper Guide
Porous Pad.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing
Disassembly Procedure
1. Remove the following three pads from the Front Paper Guide Assy. with
tweezers.
z Front Paper Guide Porous Pad
z Front Paper Guide Left Porous Pad
z Front Paper Guide Support Porous Pad
C A U T I O N
The Front Paper Guide Porous Pads are glued on the Front Paper
Guide. Remove the pads carefully not to torn them.
: Bend line
Figure 2-20. Removing the Front Paper Guide Porous Pads
Disassembly and Assembly Disassembly 52
EPSON Stylus Photo R340/350 Revision A
Reattaching the Front Paper Guide Support Porous Pad
z Bend the support porous pad along the bend line at a right
angle, and attach it to the Front Paper Guide. Make sure to
put the bent portion of the pads under the ribs and tightly
fit the pads onto the Front Paper Guide.
Reattaching the Front Paper Guide Porous Pad
z Apply Three Bond 1401 to the six points on the Front Paper
Guide shown in the figure below. Immediately after
applying the bond, attach the Front Paper Guide Porous
Pad.
Left Side of the Printer
4 ± 1 mm Length
1 - 2 mm Width
4 ± 1 mm Length
2 - 3 mm Width
Right Side of the Printer
5 - 6 mm Width
3 - 4 mm Width
Figure 2-21. Bond Applying Positions and Areas for Front Paper
Guide Porous Pad
z After attaching the Front Paper Guide Porous Pad, draw a
mark on the left of the Front Paper Guide with a red pen.
Left Side of the Printer
C A U T I O N
z Put the Front Paper Guide Porous Pad under the ribs and
be sure that the pad is tightly fitted on the Front Paper
Guide. Adjust the position of the Front Paper Guide Porous
Pad so that the gap between the pad and the Front Paper
Guide is 0.5 to 1.0 mm.
0.5 to 1.0 mm
Figure 2-23. Reattaching the Front Paper Guide Porous Pad
Reattaching the Front Paper Guide Left Porous Pad
z Put the protrusion of the Front Paper Guide Left Porous
Pad into the hole shown in Figure 2-20, and make sure the
pad is tightly fitted on the Front Paper Guide.
Be careful not to damage the Front Paper Guide Support
Porous Pads.
Be careful not to apply too much bond. Do not contaminate the
Front Paper Guide Support Porous Pads with the bond.
The porous pad surface must be lower than the surface of the
Front Paper Guide by 0.5 to 1 mm.
Marking Point
Figure 2-22. Marking Point
Disassembly and Assembly Disassembly 53
EPSON Stylus Photo R340/350 Revision A
2.3.9 Removing the Main Board Assy.
Illustration (1)
Carriage Lock
Other Connector Cables
Carriage Unit
LCD FFC
Two-sided Tapes
M/B
Grounding
Plate
Positioning
Holes
Connectors
1
Panel FFC
C.B.S 3x6
(6-8kgf.cm)
2
C.B.S 3x6
(4-5kgf.cm)
Parts/Components must be removed to remove the Main Board Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing
Disassembly Procedure
1. Unlock the carriage lock with tweezers and move the Carriage Unit to the
center.
2. Remove the two pieces of two-sided tape that secure the Panel FFC and LCD
FFC and disconnect the FFCs from the Main Board Assy.
3. Disconnect the other connector cables from the Main Board Assy.
4. Remove the two screws ( ) that secure the M/B Grounding Plate and
remove it.
Figure 2-24. Removing the Main Board Assy. (1)
Disassembly and Assembly Disassembly 54
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
C.B.P 3x8
(6-8kgf.cm)
2
Lower Housing
3
C.B.S 3x6
(6-8kgf.cm)
Main Board Assy.
PG Detector Holder
Contact
Point
C.B.P 3x8
(6-8kgf.cm)
Illustration (3)
Housing Slot
C.B.S 3x6
(4-6kgf.cm)
2
1
Figure 2-26. Removing the Main Board Assy. (3)
1
5. Remove the three screws ( ) that secure the Main Board Assy.
6. Pull the right side of the Lower Housing ( ) toward you, and lift the front
side of the Main Board Assy. to release it from the hooked tab ( ) and the
other two tabs ( ). Then remove the Main Board Assy. rightward avoiding a
contact with the PG Detection Holder.
7. Remove the two screws ( ) that secure the Housing Slot and remove it.
8. Remove the Optical Tube Slot from the Housing Slot.
Optical Tube Slot
Positioning Grooves
Hooked Tabs
Figure 2-25. Removing the Main Board Assy. (2)
Disassembly and Assembly Disassembly 55
EPSON Stylus Photo R340/350 Revision A
Set the two positioning grooves ( ) of the Optical Tube Slot
onto the two guide pins. See Figure 2-26.
Set the two guide pins ( ) of the Housing Slot into the
positioning holes.
Guide Pins
Figure 2-27. Reinstalling the Housing Slot
Tighten the screws to secure the Housing Slot in the order
shown in Figure 2-26.
Make sure that the connector cable of the Tray/CD-R Sensor is
routed as shown in the figure below before placing the Main
Board Assy.
Tighten the screws to secure the Main Board Assy. in the order
shown in Figure 2-25.
Make sure there is no gap between the Housing Slot and the
Lower Housing.
Should be
No Gap
Lower Housing
Figure 2-29. Reinstalling the Main Board Assy.
Set the positioning hole ( ) of the M/B Grounding Plate onto
the guide pin. See Figure 2-24.
Tighten the screws to secure the M/B Grounding Plate in the
order shown in Figure 2-24.
Connect the connector cables to the Main Board Assy. in the
order given in the table below.
Tray/CD-R Sensor
Connector Cable
Figure 2-28. Routing the Connector Cable
Order
1 CN11 Black 4 CR Motor
2 CN4 White 3 PE Sensor
3 CN2 Red 4 Tray/CD-R Sensor
4 CN3 Black 3 PG Sensor
5 CN1 Gray 3 Power Supply Board
6 CN12 White 2 PG Motor
7 CN10 White 4 PF Motor
8 CN8 Black 15 Head Cable
9 CN7 Black 14 Head Cable
10 CN9 White 14 Head Cable
Connector
No.
Color
Number of
Pins
Destination
Disassembly and Assembly Disassembly 56
EPSON Stylus Photo R340/350 Revision A
Align the Panel FFC and the LCD FFC with the lines marked
on the side of the Main Board Assy., and secure them with twosided tape keeping the positions shown in the figure below.
Line Marked
Gap 1 - 2 mm
Figure 2-30. Routing the Panel FFC
Gap 1 - 2 mm
A D J U S T M E N T
R E Q U I R E D
Whenever the Main Board Assy. is replaced, be sure to perform the
required adjustments in the order given below. (See Chapter 3 for
details on the adjustments)
When retrieving the ID data from the previous main board is
possible
1. EEPROM data copy
When the ID data cannot be read out from the previous main
board
1. Replace the Waste Ink Pad with a new one
(Because the waste ink counter information cannot be
retrieved.)
2. Market setting
3. USB ID input
4. Protection counter
5. Head Rank ID Label input
6. First Dot adjustment
7. PW Sensor adjustment
8. Head Angle adjustment
9. Bi-D Adjustment
10. Offset Input for CR Motor Calorific Limitation
Disassembly and Assembly Disassembly 57
EPSON Stylus Photo R340/350 Revision A
2.3.10 Removing the ASF Assy.
Illustration
C.B.S 3x6 (5-7kgf.cm)
2
4
C.B.P 3x8 (5-7kgf.cm)
ASF Assy.
Connector Cable
Hooked
Tab
ASF Screw
(4-5 kgf.cm)
C.B.S(P4) 3x6 (8-10kgf.cm)
3
5
Acetate Tape
123
Parts/Components must be removed to remove the ASF Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy.
Disassembly Procedure
1. Remove the three Main Frame Screws ( ) that secure the connector cables
of the PF Motor and the PG Motor, and release the cables from the groove.
2. Remove the two pieces of acetate tape that secures the connector cables of the
PF Motor and the PG Motor and release the cables from the hooked tab ( )
of the ASF Assy.
3. Remove the five screws ( ) that secure the ASF Assy., and remove it toward
the rear of the printer.
Main Frame Screws (5-7 kgf.cm)
Acetate Tape
1
C.B.S 3x6 (5-7kgf.cm)
Figure 2-31. Removing the ASF Assy.
Disassembly and Assembly Disassembly 58
EPSON Stylus Photo R340/350 Revision A
Illustration
Extension Spring 0.45
2
Guide
Pin
ASF Frame
Support Plate
Compression Spring 2.51
Hooked
Tabs
C.B.P 3x6 (3-5kgf.cm)
Retard Roller Assy.
Hopper
Paper Back Lever
Compression Spring 0.31
1
Guide
Pin
ASF Frame
C A U T I O N
When performing the next step, be careful not to touch the Hopper
Pad with bare hands.
Hopper Pad
Figure 2-33. Handling the Hopper Pad
4. Open the Hopper and remove the Compression Spring 2.51.
C A U T I O N
When performing the next step, be careful not to lose the
Compression Spring 0.31.
5. Bow the Paper Back Lever to release the both ends of it from the two guide
pins ( ) in the order of and , and remove the Paper Back Lever
1 2
together with the Compression Spring 0.31.
6. Remove the two screws ( ) that secure the ASF Frame Support Plate and
remove it.
7. Release the Extension Spring 0.45 from the two tabs ( ) and remove the
Guide Pins
spring.
8. Open the Retard Roller Assy. and release it from the two guide pins ( ) and
Figure 2-32. Removing the ASF Assy. (2)
remove the Retard Roller Assy.
Disassembly and Assembly Disassembly 59
EPSON Stylus Photo R340/350 Revision A
Reassembling the ASF Assy.
z Hitch the L-shaped leg of the Torsion Spring 6.45 to the
shaft of the Paper Back Lever, and hitch the other shorter
leg of the spring to the groove of the ASF Assy.
L-shaped Leg
Torsion Spring 6.45
Shorter Leg
Figure 2-34. Reattaching the Torsion Spring 6.45
z Make sure that the Paper Back Lever and the Retard Roller
Assy. move smoothly.
z Tighten the screws to secure the ASF Frame Support Plate
in the order shown in the figure below.
Reinstalling the ASF Assy.
z Attach the Compression Spring 2.51 to the rib ( ) of the
Hopper and the two ribs ( ) of the ASF Frame, and make
sure that the Hopper moves smoothly.
Ribs
Figure 2-36. Reinstalling the Hopper
z Set the guide pin ( ) of the ASF Assy. and the rib ( ) in
the positioning holes.
Right Side of the Printer
Rib
1
Guide Pin
2
Figure 2-35. Reinstalling the ASF Frame Support Plate
Figure 2-37. Reinstalling the ASF Assy. (1)
Disassembly and Assembly Disassembly 60
EPSON Stylus Photo R340/350 Revision A
z Set the positioning groove of the ASF Assy. onto the guide
pin.
Left Rear Side of the Printer
Positioning Hole
Figure 2-38. Reinstalling the ASF Assy. (2)
z Hold down the left upper side of the ASF Assy. (when
viewed from the rear of the printer) while screwing the
assy. in the order shown in Figure 2-31. Do not hold down
the center of the ASF Assy.
z Make sure that there is no gap between the ASF Assy.,
Main Frame and Power Supply Assy.
Routing and Securing the Connector Cables of the PF Motor
and PG Motor
z Set the connector cables of the PF Motor and the PG Motor
into the groove of the ASF Assy. as shown in the figure
below.
z Tighten the screws in the order shown in Figure 2-31, so as
not to trap the PF Motor and PG Motor connector cables
under the ASF Assy.
z Tie the cables by wrapping acetate tape around them at the
position shown in the figure below.
Right Rear Side of the Printer
20m
20 mm
Acetate Tape
Figure 2-40. Tying the Connector Cables with Acetate Tape
z Be sure that the PF Motor and PG Motor connector cables
do not contact with the shaft edge of the Paper Back Lever.
Left Side of the Printer
Shaft Edge
PG Motor
Connector Cable
PF Motor
Connector Cable
Figure 2-41. Setting and Routing the PF Motor and PG Motor
Connector Cables
A D J U S T M E N T
R E Q U I R E D
Whenever the ASF Assy. is replaced, be sure to apply proper
amount of the G-74 oil to the specified points. (See Chapter 4 for
details on the lubrication)
Figure 2-39. Setting the PF Motor and PG Motor Connector Cables
(Section View of the Groove)
Whenever the ASF Assy. is replaced, be sure to perform the
required adjustments in the order given below. (See Chapter 3
for details on the adjustments)
z First Dot adjustment
Disassembly and Assembly Disassembly 61
EPSON Stylus Photo R340/350 Revision A
2.3.11 Removing the Shaft Assy. Holder
Illustration
Carriage Unit
Head Cable
Anti-home Side
1
Guide
Pin
Hooked Tabs
C.B.S 3x6
(6-8kgf.cm)
PE Lever Sensor
Shaft Assy. HolderHooked Tabs (x 4)
Upper Paper
Guide
Parts/Components must be removed to remove the Shaft Assy. Holder.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy.
Disassembly Procedure
1. Move the Carriage Unit to the anti-home side.
2. Remove the two screws ( ) that secure the Shaft Assy. Holder.
2
3. Release the two tabs ( ) that secure the Shaft Assy. Holder upward with
tweezers and pull out the guide pin ( ) from the Ink System Frame.
C A U T I O N
When performing the next step, be careful not to damage the PE
Sensor Lever as it comes into contact with the Upper Paper Guide.
4. Press down the left side of the Upper Paper Guide (when viewed from the rear
of the printer) to release the PE Sensor Lever from the notch, and then slide
the Shaft Assy. Holder rightward to remove the assy. toward you.
C A U T I O N
When performing the next step, be careful not to damage the Head
Cable.
5. Release the Head Cable from the eight tabs ( ) of the Shaft Assy. Holder.
Hooked Tabs
Ribs
Figure 2-42. Removing the Shaft Assy. Holder (1)
Disassembly and Assembly Disassembly 62
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
LD Roller Shaft Holder
Positioning Holes
Spur Gear 36.8
Hooked
Tabs
Clutch
Paper Block
Guide Pins
Extension Spring 0.143
Acetate Tape
L-shaped Leg
1
Shaft
Straight Leg
LD Roller ShaftLD Roller
Guide Pins
Torsion Spring 0.22
PE Lever Sensor
2
Shaft
Removing the LD Roller Shaft
6. Release the two tabs ( ) that secure the Paper Block and remove it.
7. Release the two tabs ( ) that secure the LD Roller Shaft and remove it
together with the Clutch.
C A U T I O N
When performing the next step, do not touch the LD Roller with
bare hands.
8. Remove the Spur Gear 36.8 from the LD Roller Shaft.
9. Release the Extension Spring 0.143 from the tabs ( ) of the Clutch and the
LD Roller Shaft and remove the spring together with the Clutch.
10. Remove the LD Roller from the LD Roller Shaft.
Removing the PE Sensor
11. Remove the shaft of the PE Sensor Lever from the LD Roller Shaft Holder in
the order shown in Figure 2-43, and remove the PE Sensor Lever and the
Torsion Spring 0.22.
12. Remove the acetate tape that secures the PE Sensor connector cable, and
release the cable from the three tabs ( ) of the LD Roller Shaft Holder.
13. Release the PE Sensor from the tab ( ) and remove the sensor.
PE Sensor
Connector Cable
Hooked Tabs
PE Sensor
Figure 2-43. Removing the Shaft Assy. Holder (2)
Disassembly and Assembly Disassembly 63
EPSON Stylus Photo R340/350 Revision A
Reinstalling the PE Sensor
z Route the PE Sensor connector cable as shown in Figure
2-43. Be sure to route the cable under the two ribs of the LD
Roller Shaft Holder.
Ribs
Figure 2-44. Routing the PE Sensor Connector Cable
z Hitch the L-shaped leg of the Torsion Spring 0.22 to the
groove of the PE Sensor Lever, and hitch the other straight
leg to the LD Roller Shaft Holder.
z Make sure that the PE Sensor Lever moves smoothly.
Reinstalling the LD Roller
z Make sure to match the directions of the triangular arrows
marked on the LD Roller Shaft and the backside of the LD
Roller.
Triangular Arrow on the LD Roller
Reinstalling the Clutch
z Attach the Extension Spring 0.143 to the Clutch in the
correct orientation as shown in the figure below.
OK NG
Figure 2-46. Reattaching the Extension Spring 0.143
z Set the positioning hole of the Clutch onto the guide pin.
Positioning Hole
Figure 2-47. Reinstalling the Clutch
z Make sure that the Clutch mechanism moves smoothly.
Reinstalling the Paper Block
z Set the two positioning holes of the Paper Block onto the
shaft. See Figure 2-43.
Triangular Arrow on the LD Roller Shaft
Figure 2-45. Reinstalling the LD Roller
Disassembly and Assembly Disassembly 64
EPSON Stylus Photo R340/350 Revision A
Reinstalling the LD Roller Shaft
z Put the leg of the Torsion Spring 137.7 onto the cam of the
LD Roller Shaft to hold down the cam by the spring.
Torsion Spring 137.7
Cam
Figure 2-48. Setting the Torsion Spring 137.7
Reinstalling the Shaft Assy. Holder
z Press down the left side of the Upper Paper Guide (when
viewed from the rear of the printer) to insert the PE Sensor
Lever into the notch. Be careful not to damage the PE
Sensor Lever. See Figure 2-42.
z Engage the Spur Gear 36.8 and the Combination Gear
27.2,19.2.
A D J U S T M E N T
R E Q U I R E D
Whenever the LD Roller Shaft is replaced, be sure to apply proper
amount of the G-74 oil to the specified points. (See Chapter 4 for
details on the lubrication)
Combination Gear 27.2,19.2
Spur Gear 36.8
Figure 2-49. Spur Gear 36.8 and Combination Gear 27.2,19.2
z Set the ribs ( ) and tabs ( ) of the Shaft Assy. Holder into
the positioning holes of the Main Frame. See Figure 2-42.
z Tighten the screws to secure the Shaft Assy. Holder in the
order shown in Figure 2-42.
Disassembly and Assembly Disassembly 65
EPSON Stylus Photo R340/350 Revision A
2.3.12 Removing the CR Motor
Illustration
Right Rear Side of the Printer
CR Motor
Connector Cable
Driven Pulley
Timing Belt
C.C 3x4 (3.5-4.5kgf.cm)
1 2
CR Motor
Figure 2-50. Removing the CR Motor
Parts/Components must be removed to remove the CR Motor.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Main Board Assy.
Disassembly Procedure
1. Press the Driven Pulley in the direction of the arrow to reduce the tension of
the Timing Belt, and remove the Timing Belt from the pinion gear of the CR
Motor.
Cable Tie
C A U T I O N
When performing the next step, be careful not to damage the pinion
gear of the CR Motor.
3. Remove the two screws that secure the CR Motor and remove it.
Reinstall the CR Motor so that the lot number printed side faces
upward.
Tighten the screws to secure the CR Motor in the order shown
in Figure 2-50.
Make sure that there is no gap between the CR Motor and the
Main Frame.
Tie the following connector cables with a cable tie.
z CR Motor (route the cable as shown in Figure 2-50.)
z PF Motor
z PG Motor
z Tray/CD-R Sensor
z Power Supply Board
After tying the cables, cut the cable tie leaving a 20 mm-length
margin.
A D J U S T M E N T
R E Q U I R E D
Whenever the CR Motor is reinstalled or replaced, be sure to
perform the required adjustments in the order given below.
(See Chapter 3 for details on the adjustments)
1. First Dot adjustment
2. PW Sensor adjustment
3. Head Angle adjustment
4. Bi-D Adjustment
5. Offset Input for CR Motor Calorific Limitation (only when
the motor is replaced)
2. Cut the cable tie and release the CR Motor Connector Cable.
Disassembly and Assembly Disassembly 66
EPSON Stylus Photo R340/350 Revision A
2.3.13 Removing the Print Head
Illustration
Carriage Lock Carriage Unit
Hooked Tabs
IC Holder
Connectors
Print
Head
FFC Holder
C.B.P 2.5x6 (3-5kgf.cm)
Head Cable
2
C.B.B(P2) 2.5x8 (3-5kgf.cm)
Hooked Tabs
1
Parts/Components must be removed to remove the Print Head.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing
Disassembly Procedure
1. Remove the all Ink Cartridges from the Carriage Unit.
2. Unlock the carriage lock with tweezers and move the Carriage Unit to the
center.
3. Remove the screw ( ) that secures the FFC Holder with a No.1 screwdriver.
4. Slightly bow the bottom of the FFC Holder and slide the holder downward to
release it from the three tabs ( ) and remove the FFC Holder.
5. Release the IC Holder from the two tabs ( ) and remove it upward.
6. Remove the two screws ( ) that secure the Print Head with a No.1
screwdriver.
7. Slightly lift the Print Head to disconnect the Head Cable from the Print Head
and remove the Print Head.
C A U T I O N
When handling the Print Head, be sure not to touch and damage
the nozzle surface of the Print Head.
Figure 2-51. Removing the Print Head
Disassembly and Assembly Disassembly 67
EPSON Stylus Photo R340/350 Revision A
Make sure that the Head Cable is correctly connected to the
Print Head.
Set the two positioning holes ( ) of the Print Head onto the two
guide pins.
Positioning Holes
Figure 2-52. Reinstalling the Print Head
Tighten the screws to secure the Print Head in the order shown
in Figure 2-51.
A D J U S T M E N T
R E Q U I R E D
Whenever the Print Head is reinstalled or replaced, be sure to
perform the required adjustments in the order given below.
(See Chapter 3 for details on the adjustments)
1. Initial Ink Charge (only when the Print Head is replaced)
2. Head ID input (only when the Print Head is replaced)
3. First Dot adjustment
4. PW Sensor adjustment
5. Head Angle adjustment
6. Bi-D Adjustment
Disassembly and Assembly Disassembly 68
EPSON Stylus Photo R340/350 Revision A
2.3.14 Removing the Upper Paper Guide
Illustration
Upper Paper Guides
PF Roller Assy.
Transparent sheet
Lower Paper Guide
Hooked Tabs
Guide Pins
Torsion Springs 122.2
Parts/Components must be removed to remove the Upper Paper Guide.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder
Disassembly Procedure
1. Move the Carriage Unit to the home position.
123
2. Put a transparent sheet on the Upper Paper Guide and the PF Roller Assy.
3. Release the three Torsion Springs 122.2 from the tabs ( ) of the Main Frame
and remove the springs toward you.
4. Release the six tabs ( ) that secure the three Upper Paper Guides (two tabs
for each), and slightly lift the guides to pull out the guide pins ( ).
5. While pressing down the Lower Paper Guide, pull out the six tabs ( )
released at Step 4 toward you, and pull out the three Upper Paper Guides.
Put the leg of the Torsion Springs 122.2 into the groove of the
Upper Paper Guide.
Figure 2-53. Removing the Upper Paper Guide
Figure 2-54. Reattaching the Torsion Springs 122.2
Attach the Upper Paper Guide in the order shown in Figure
2-53.
Disassembly and Assembly Disassembly 69
EPSON Stylus Photo R340/350 Revision A
2.3.15 Removing the Printer Mechanism
Illustration (1)
C.B 3x6 (4-5kgf.cm)
C.B.P 3x8 (6-8kgf.cm)
4
2
C.B.P 3x8 (4-5kgf.cm)
Left Side of the Printer
2
Main Frame Screw (6-8kgf.cm)
Right Rear Side of the Printer
1
CD-R Paper Guide
3
C.B.P 3x8 (6-8kgf.cm)
1
Right Front Side
of the Printer
C.B.S 3x6 (6-8kgf.cm)
5
3
Align the Edge of the Acetate
Tape with the Bend Line.
Parts/Components must be removed to remove the Printer Mechanism.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder
Disassembly Procedure
1. Move the Carriage Unit to the center.
2. Remove the three screws ( ) that secure the CD-R Paper Guide and remove
it.
3. Remove the five screws ( ) that secure the Printer Mechanism.
4. Cut the cable tie and release the connector cables.
5. Remove the Upper Ink Eject Porous Pad Support from the Lower Housing.
6. Remove the two pieces of acetate tape and release the connector cable of the
Tray/CD-R Sensor.
Cable Tie
Upper Ink Eject
Porous Pad Support
Tray/CD-R Sensor
Connector Cable
Acetate Tape
Figure 2-55. Removing the Printer Mechanism (1)
Disassembly and Assembly Disassembly 70
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
Combination Gear 27.2,19.2
Right Side of
the Printer
Hooked Tab
Handling Positions
Change Lever
Hooked Tab (under the Tube)
APG Assy.
Hooked Tab
C-shaped Leg
U-shaped Leg
Left Side of
the Printer
7. Release the U-shaped leg of the APG Grounding Spring from the notch of the
APG Assy. and release the C-shaped leg of the spring from the notch of the
Main Frame, then remove the APG Grounding Spring.
C A U T I O N
Beware of the following items when performing the next step.
The Change Lever and the Combination Gear 27.2,19.2 may
come off. Be careful not to drop and damage them.
As remaining ink may leak or spatter from the tip of the Waste
Ink Tube, have a waste cloth beforehand to wipe out it.
When lifting the Printer Mechanism, be sure to hold it by the
specified handling positions to prevent the Main Frame from
deforming.
The two tabs ( ) on each of the home and the ant-home sides
differs in orientation (releasing direction), so first release the
two tabs ( ) on both sides of the same orientation, and then
release the other two tabs.
8. Release the four tabs ( ) that secure the Printer Mechanism and lift the
Printer Mechanism holding the left and right upper edges of the Main Frame
to remove it.
W A R N I N G
When reinstalling the Printer Mechanism to the Lower Housing, be
sure to set the Waste Ink Tube into the groove and the tab as shown
in the figure below. And make sure that the Upper Ink Eject Porous
Pad Support is securely attached on the tube. Improper installation
of the tube and the pad may cause ink leakage.
APG Grounding Spring
Hooked Tab
Waste Ink Tube
Upper Ink Eject
Porous Pad Support
Figure 2-56. Removing the Printer Mechanism (2)
Groove
Figure 2-57. Reinstalling the Waste Ink Tube
Disassembly and Assembly Disassembly 71
EPSON Stylus Photo R340/350 Revision A
The correct installation position of the Printer Mechanism is
ensured by carefully checking the specified points in relation to
the Lower Housing.
To ensure the installation accuracy, the position of the Main
Frame must be checked in X, Y, and Z directions as described
below. The Main Frame can be secured with the four hooked
tabs and the two Main Frame Insulators only when the Main
Frame is located at the correct position.
z [X direction]
• Make sure that the bottom edge of the Main Frame is
properly inserted into the groove on the Lower Housing.
• Make sure there is no gap between the Main Frame and
the Lower Housing.
z [Y direction]
Make sure that the notches of the Main Frame are properly
engaged with the protrusions on the Lower Housing.
z [Z direction]
• Make sure there is no gap between the Main Frame and
the Lower Housing.
• Make sure that the left side of the Printer Mechanism is
correctly secured by the two tabs.
• Make sure that the left side of the Printer Mechanism is
correctly secured with the two Main Frame Insulators.
If not, follow the procedure below to properly insert the
insulators;
While holding down the left frame of the CDR Guide
Assy., lift the left side of the printer and from the bottom
of the printer, rotate the insulator in both directions until
it clicks.
Left Side of the Printer
Hooked
Tabs
Figure 2-58. Reinstalling the Main Frame
Main Frame
Insulator
X Direction
Main Frame
Insulator
X Direction: (Four Places)
Y Direction: (One Place)
Z Direction: (Four Places)
Z Direction
(Vertical Direction)
Y Direction
Right Side of the Printer
Hooked
Tabs
CD-R Guide Assy.
Figure 2-59. Inserting the Main Frame Insulators
Disassembly and Assembly Disassembly 72
EPSON Stylus Photo R340/350 Revision A
After making sure that the Waste Ink Tube is routed under the
Lower Waste In Pad, attach the Upper Ink Eject Porous Pad
Support to/in the position/orientation as shown in the figure
below making it contact with the Waste Ink Tube.
Right Rear Side of the Printer
Upper Ink Eject Porous Pad Support
Align the Edge of
the Pad with here
Lower Waste Ink Pad
Upside
Downside
OK NG
Figure 2-60. Reattaching the Upper Ink Eject Porous Pad Support
Tie the following connector cables with a cable tie.
z CR Motor (route the cable as shown in Figure 2-50.)
z PF Motor
z PG Motor
z Tray/CD-R Sensor
z Power Supply Board
After tying the cables, cut the cable tie leaving a 20 mm-length
margin.
Tighten the screws to secure the Printer Mechanism and the
CD-R Paper Guide in the order shown in Figure 2-55.
Make sure that the Waste Ink Tube is free of flattening or
compression.
Make sure that the Cap Assy. moves smoothly.
Disassembly and Assembly Disassembly 73
EPSON Stylus Photo R340/350 Revision A
2.3.16 Removing the Power Supply Assy.
Illustration
Grooves
Power Supply Board
Connector Cable
Parts/Components must be removed to remove the Power Supply Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism
Disassembly Procedure
1. Release the Power Supply Board connector cable from the two grooves ( )
on the Lower Housing.
2. Remove the screw ( ) that secures the Power Supply Assy., and remove it.
Route the cable twisting it as shown in the figure below.
Figure 2-62. Routing the Power Supply Board Connector Cable
A D J U S T M E N T
R E Q U I R E D
Whenever the Power Supply Assy. is replaced, be sure to perform
the required adjustment shown below. (See Chapter 3 for details on
the adjustments)
Power Supply Assy.
C.B.P 3x8
(6-8kgf.cm)
Offset Input for CR Motor Calorific Limitation
Figure 2-61. Removing the Power Supply Assy.
Disassembly and Assembly Disassembly 74
EPSON Stylus Photo R340/350 Revision A
2.3.17 Removing the Waste Ink Pads
Illustration
Small Waste Ink Pads
(on both the upper and
lower sides)
Upper Waste Ink Pad
Lower Waste Ink Pad
Parts/Components must be removed to remove the Waste Ink Pads.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism, Power Supply Assy.
Disassembly Procedure
1. Remove the six Waste Ink Pads from the Lower Housing.
Reattach the six Waste Ink Pads so that their holes are properly set
onto the ribs ( ), guide pins ( ) and tabs ( ) on the Lower
Housing.
Bottom Side
Top Side
Bottom Side
Top Side
Figure 2-64. Reinstalling the Waste Ink Pads
Lower Small Cap Ink Pad
(on the Upper Side)
A D J U S T M E N T
R E Q U I R E D
Lower Large Cap Ink Pad
(on the Lower Side)
Whenever the Waste Ink Pads are replaced, be sure to perform the
required adjustment shown below. (See Chapter 3 for details on the
adjustments)
Protection counter
Figure 2-63. Removing the Waste Ink Pads
Disassembly and Assembly Disassembly 75
EPSON Stylus Photo R340/350 Revision A
2.3.18 Removing the Lower Housing
Illustration
Lower Housing
Hooked Tabs
Shaft
Stacker Shaft
Parts/Components must be removed to remove the Lower Housing.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism, Power Supply Assy., Waste Ink Pads, Stacker Assy.
Disassembly Procedure
1. Release the two tabs ( ) that secure the Stacker Lock and remove the Stacker
Lock and the Compression Spring 5.1.
2. Release the shaft of the Stacker Shaft with a flat-blade screwdriver and
remove the Stacker Shaft.
3. Remove the three feet affixed on the bottom of the Lower Housing.
4. Remove the two Main Frame Insulators from the Lower Housing.
Compression Spring 5.1
Stacker Lock
Main Frame Insulator Feet
Figure 2-65. Removing the Lower Housing
Disassembly and Assembly Disassembly 76
EPSON Stylus Photo R340/350 Revision A
2.3.19 Removing the APG Assy.
Illustration
Left Rear Side of the Printer
Figure 2-66. Removing the APG Assy.
APG Assy.
C.B.S 3x6 (6-8kgf.cm)
Parts/Components must be removed to remove the APG Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism
Disassembly Procedure
1. Remove the screw ( ) that secures the APG Assy., and remove it.
Reinstall the APG Assy. in the order given below.
1. Set the two tabs ( ) into the corresponding holes on the Main
Frame.
2. Insert the arm into the slit of the Main Frame.
3. Set the two guide pins ( ) into the positioning holes.
Arm
Guide Pins
Hooked Tabs
Figure 2-67. Reinstalling the APG Assy.
Disassembly and Assembly Disassembly 77
EPSON Stylus Photo R340/350 Revision A
2.3.20 Removing the Carriage Unit
Illustration (1)
C.B.S 3x6
(7-9kgf.cm)
Hooked tab
CR Shaft
Left Fixed
Spring
2
Rib
3
6
CR Guide Plate
Carriage Unit
Parts/Components must be removed to remove the Carriage Unit.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
C.B.S 3x6
1
(7-9kgf.cm)
Printer Mechanism, APG Assy., Print Head
Disassembly Procedure
4
Rib
5
1. Release the tab ( ) of the Main Frame that secures the CR Shaft Left Fixed
Spring and remove the spring.
2. Remove the six screws ( ) that secure the CR Guide Plate.
3. Release the CR Guide Plate from the two ribs ( ), and remove it avoiding a
contact with the tab ( ) that was securing the CR Shaft Left Fixed Spring.
4. Release the right edge of the CR Scale from the tab ( ) of the Right Scale
Holder.
5. Pull out the CR Scale leftward from behind the printer, and remove the CR
Scale and the Extension Spring 3.289 from the tabs ( ) of the Left Scale
Holder in that order.
6. Remove the Extension Spring 3.289 from the CR Scale.
7. Press the Driven Pulley rightward to reduce the tension of the Timing Belt,
and remove the Timing Belt from the pinion gear of the CR Motor and the
Driven Pulley in that order.
Extension
Spring 3.289
Hooked Tab
Left Scale
Holder
Hooked Tab
Driven Pulley
CR Scale
Timing Belt
Right Scale Holder
Hooked
Tab
Pinion Gear
Figure 2-68. Removing the Carriage Unit (1)
Disassembly and Assembly Disassembly 78
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
Right Parallel
Adjust Bushing
Right Side of
the Printer
Left Scale Holder
E Ring
Flat Washer
E Ring
Flat Washer
Spring Washer
Right Scale
Holder
C.B.S(P4) 3x6
(6-8kgf.cm)
E Ring
Right CR
Cam
Left Side of
the Printer
CR Guide Shaft
Hooked
Tab
CR Shaft Right Fixed Spring
Left CR Cam
Right Side of the Printer
C A U T I O N
When performing the next step, be careful not to lose the Scale
Holder Sliders.
Left Side of the Printer Right Side of the Printer
Scale Holder Sliders
Figure 2-70. Scale Holder Sliders
8. Remove the E ring from the right edge of the CR Guide Shaft, and remove the
Right Scale Holder, Right CR Cam and the Scale Holder Slider.
9. Remove the screw ( ) that secures the Right Parallel Adjust Bushing and
remove it.
10. Release the CR Shaft Right Fixed Spring from the tab ( ) of the Main Frame,
and remove the spring from the CR Guide Shaft.
11. Remove the upper E ring and flat washer that secure the Left Scale Holder.
12. Remove the lower E ring, flat washer and spring washer that secure the Left
Scale Holder and remove the Left Scale Holder.
13. Slide the CR Guide Shaft rightward to pull it out of the Left CR Cam and
Main Frame, and remove the Carriage Unit together with the CR Guide Shaft.
14. Pull out the CR Guide Shaft from the Carriage Unit.
Figure 2-69. Removing the Carriage Unit (2)
Disassembly and Assembly Disassembly 79
EPSON Stylus Photo R340/350 Revision A
Illustration (3)
Left Parallel
Adjust Bushing
Guide Pin
Left Side of the Printer
Two-sided
Tape
CR Encoder Sensor Board PW Sensor FFC
C.B.S(P4) 3x6
(6-8kgf.cm)
Two-sided
Tape
FFC Holder; B
1
Timing Belt
CR Encoder Sensor
Board Connector
2
C.P.B(P1) 1.7x5
(1.5-2.5kgf.cm)
CSIC Board Connector
15. Remove the screw ( ) that secures the Left Parallel Adjust Bushing.
16. Pull out the guide pin ( ) of the Left Parallel Adjust Bushing and remove it.
17. Remove the Timing Belt from the groove ( ) of the Carriage Unit.
18. Remove the two screws ( ) that secure the FFC Holder; B with a No.1
screwdriver and remove it.
19. Disconnect the Head Cable from the CSIC Board.
20. Remove the two-sided tape that secures the Head Cable and disconnect it
from the CR Encoder Sensor Board.
21. Pull out the Head Cable through the two notches ( ) of the Carriage Unit.
Removing the CR Encoder Sensor
1. Remove the screw ( ) that secures the CR Encoder Sensor Board with a
No.1 screwdriver.
2. Remove the two-sided tape that secures the PW Sensor FFC.
3. Disconnect the PW Sensor FFC from the CR Encoder Sensor Board, and
remove the board.
Notch
C.P.B(P1) 1.7x5
(1.5-2.5kgf.cm)
Connector Notch
Figure 2-71. Removing the Carriage Unit (3)
Disassembly and Assembly Disassembly 80
EPSON Stylus Photo R340/350 Revision A
Illustration (4)
PW Sensor Cap
C.B.P 2.5x8 (3-5kgf.cm)
1
Hooked Tabs
Cartridge Lever
Torsion Spring
Guide Pin
Hooked Tab
2
Connector
Cartridge Lever
Electric Pole
PW Sensor Board
Notch and Guide Pin
Removing the PW Sensor Board
1. While pressing the PW Sensor Cap in the direction of the arrow shown in
Figure 2-72, insert a flat-blade screwdriver between the tab ( ) of the PW
Sensor Cap and the Carriage to release the three tabs ( ), and remove the
PW Sensor Cap.
C A U T I O N
Prevent the PW Sensor Board from falling down when removing
the PW Sensor Cap as the board is secured by the cap and becomes
unstable after the cap is removed.
2. Pull out the PW Sensor FFC through the notch ( See Figure 2-71.) of the
Carriage Unit, and disconnect the FFC from the PW Sensor Board, then
remove it together with the PW Sensor Board.
Removing the CSIC Board
1. Remove the Cartridge Lever Torsion Spring from the guide pin ( ) of the
Cartridge Lever and the tab ( ) of the IC Guide.
2. Pull out the guide pin ( ) of the Cartridge Lever from the right notch of the
IC Guide with tweezers, and remove the Cartridge Lever
3. Remove the two screws ( ) that secure the IC Guide, and release the tab ( )
with tweezers, then remove the IC Guide.
4. Release the two tabs ( ) that secure the CSIC Board, and push up the board
with a flat-blade screwdriver inserting it from the bottom notch of the
Carriage Unit to remove the CSIC Board.
C A U T I O N
Be careful not to damage the electric pole with the flat-blade
screwdriver while removing the CSIC Board.
IC Guide
Hooked Tab
CSIC Board
Hooked Tabs
Notches
Figure 2-72. Removing the Carriage Unit (4)
Disassembly and Assembly Disassembly 81
EPSON Stylus Photo R340/350 Revision A
Reinstalling the CSIC Board
z Make sure that the CSIC Board is securely fitted onto the
correct position.
z Tighten the screws to secure the IC Guide in the order
shown in Figure 2-72.
Reinstalling the PW Sensor Board
z Make sure that the PW Sensor FFC is correctly connected.
z Make sure that the PW Sensor Board is properly secured
with the PW Sensor Cap.
Reinstalling the CR Encoder Sensor Board
z Make sure that the CR Encoder Sensor FFC is correctly
connected.
Reinstalling the FFC Holder; B
z Tighten the screws in the order shown in Figure 2-71.
Reinstalling the Carriage Unit
z Set a portion of the Timing Belt that has serrated surfaces
on both sides into the groove of the Carriage Unit.
z Make sure that the Head Grounding Plate is installed at the
correct position on the Carriage Unit.
Timing Belt
Head Grounding Plate
Reinstalling the Right/Left Scale Holders
z Be sure to attach the Scale Holder Sliders to the both left
and right Scale Holders before reinstalling the holders.
Right Scale Holder
Scale Holder Sliders
Figure 2-74. Reattaching the Scale Holder Sliders
Left Scale Holder
Reinstalling the E Ring
z Be sure to attach the E ring with its smoother surface facing
outward.
Smoother Side Rough Side
Figure 2-75. Attaching the E Ring
Groove
Figure 2-73. Head Grounding Plate Installation Position
Disassembly and Assembly Disassembly 82
EPSON Stylus Photo R340/350 Revision A
Reinstalling the CR Scale
z Make sure that the Extension Spring 3.289 is not twisted.
z The cut corner of the left edge of the CR Scale should face
upward.
Cut Corner
Figure 2-76. Reinstalling the CR Scale (1)
z Make sure to reinstall the CR Scale so that it runs through
the slit of the CR Encoder Sensor.
CR Scale
CR Encoder
Sensor
Figure 2-77. Reinstalling the CR Scale (2)
Reinstalling the CR Guide Plate
z Tighten the screws in the order shown in Figure 2-68.
Reinstalling the CR Shaft Left Fixed Spring
z Put the CR Shaft Left Fixed Spring on the CR Guide Shaft
and secure the spring with the two tabs ( ) of the Main
Frame.
A D J U S T M E N T
R E Q U I R E D
Whenever any of the following parts are replaced, be sure to
lubricate them with the specified oil. (See Chapter 4 for details
on the lubrication)
z Left or Right CR Cam
z CR Guide Shaft
z Left or Right Scale Holder
z Driven Pulley Assy.
z CR Guide Plate
z Head Grounding Plate
Whenever the Carriage Unit or the CR Guide Shaft is
reinstalled or replaced, be sure to perform the required
adjustments in the order given below.
(See Chapter 3 for details on the adjustments)
1. PG adjustment
2. First Dot adjustment
3. PW Sensor adjustment
4. Head Angle adjustment (only when the Carriage Unit is
reinstalled or replaced)
5. Bi-D Adjustment
6. Offset Input for CR Motor Calorific Limitation
(only when the Carriage Unit is replaced)
Whenever the PW Sensor is reinstalled or replaced, be sure to
perform the required adjustment shown below.
(See Chapter 3 for details on the adjustments)
z PW Sensor adjustment
Left Side of the Printer
Hook Tabs
CR Shaft Left Fixed
Spring
Figure 2-78. Reinstalling the CR Shaft Left Fixed Spring
Disassembly and Assembly Disassembly 83
EPSON Stylus Photo R340/350 Revision A
2.3.21 Removing the CD-R Guide Assy.
Illustration (1)
Acetate Tape
2
Right EJ Grounding Spring
CD-R Guide Assy.
C.B.S 3x6 (6-8kgf.cm)
1
3
Ribs
Flat Washers
Flat Washer
Left CD-R Link
(7-9kgf.cm)
Right CD-R Link
C.B.S 3x6
Main Frame
Support Plate
1
Right Front Side
of the Printer
C.B.S 3x6 (6-8kgf.cm)
2
Parts/Components must be removed to remove the CD-R Guide Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism, APG Assy., Print Head, Carriage Unit
Disassembly Procedure
1. Remove the acetate tape and release the connector cable of the Tray/CD-R
Sensor.
2. Remove the Right EJ Grounding Spring from the Main Frame and the EJ
Roller Assy.
3. Remove the two screws ( ) that secure the Main Frame Support Plate, and
remove it.
4. Remove the three screws ( ) that secure the CD-R Guide Assy.
5. Remove the flat washers that secure the Left and Right CD-R Links (two
washers for each) with tweezers, then remove the Left/Right CD-R Links
from the CD-R Guide Assy.
6. Release the seven ribs ( ) that secure the CD-R Guide Assy. and remove it
first from its right side.
Ribs
Ribs
Flat Washer
Figure 2-79. Removing the CD-R Guide Assy. (1)
Disassembly and Assembly Disassembly 84
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
C.B.P 3x6 (5-7kgf.cm)
1
2
Hooked Tabs
Groove
Lower CD-R Guide
Hooked Tabs
Tray/CD-R Sensor
Hooked Tabs
7. Remove the two screws ( ) that secure the Lower CD-R Guide.
C A U T I O N
When performing the following steps, be careful not to lose the
parts listed below.
Tray Sensor Lever
CD-R Sensor Lever
Torsion Spring 2.8
Torsion Spring 4.26
8. Slide the Lower CD-R Guide to release it from the seven tabs ( ) and
remove it.
9. Remove the Compression Spring 5.1 and the Stacker Lock from the Upper
CD-R Guide.
10. Release the connector cable of the Tray/CD-R Sensor from the groove of the
Upper CD-R Guide, and remove the Tray/CD-R Sensor.
Reinstalling the Tray/CD-R Sensor
z Set the two positioning holes of the Tray/CD-R Sensor onto
the two guide pins.
Compression
Spring 5.1
Stacker Lock
Positioning Holes and Guide Pins
Figure 2-80. Removing the CD-R Guide Assy. (2)
Figure 2-81. Reinstalling the Tray/CD-R Sensor
z Route the connector cable of the Tray/CD-R Sensor as
shown in Figure 2-80.
Disassembly and Assembly Disassembly 85
EPSON Stylus Photo R340/350 Revision A
Reinstalling the Tray Sensor Lever
z Insert the Torsion Spring 2.8 onto the shaft of the Upper
CD-R Guide.
z Pull the L-shaped leg of the Torsion Spring 2.8 with
tweezers in the direction shown in the figure below.
z Set the positioning hole ( ) of the Tray Sensor Lever onto
the shaft of the Upper CD-R Guide, and hitch the L-shaped
leg of the Torsion Spring 2.8 to the position shown below.
Torsion Spring 2.8
Hitch the
Spring
Leg here
Figure 2-82. Reinstalling the Tray Sensor Lever
Tray Sensor Lever
Reinstalling the CD-R Sensor Lever
z Insert the Torsion Spring 4.26 onto the shaft of the Upper
CD-R Guide.
z Set the positioning hole ( ) of the CD-R Sensor Lever onto
the shaft of the Upper CD-R Guide, and hitch the L-shaped
leg of the Torsion Spring 4.26 to the position shown below.
Torsion Spring 4.26
Hitch the Spring
Leg here
CD-R Sensor
Lever
Figure 2-83. Reinstalling the CD-R Sensor Lever
Reinstalling the Lower CD-R Guide
z Tighten the screws in the order shown in Figure 2-80.
Reinstalling the Upper CD-R Guide
z Make sure that the two tabs of the Stacker Lock are
properly secured with a tension of the Compression Spring
5.1. See Figure 2-80.
z After reinstalling the Lower CD-R Guide, make sure there
is no gap between the Lower and Upper CDR Guides.
Disassembly and Assembly Disassembly 86
EPSON Stylus Photo R340/350 Revision A
Reinstalling the CD-R Guide Assy.
z Install the CD-R Guide Assy. first from its left side, and
right side, and then the center portion.
z Move the coiled part of the Right EJ Grounding Spring in
the direction of the arrow, and hitch the shorter leg of the
spring to the tab of the CD-R Guide Assy. while holding the
other longer leg with your fingers. Bring the longer leg to
contact with the surface of the EJ Roller Assy.
Before reassembling
the Printer Mechanism
Longer Leg
Shorter Leg
After reassembling the
Printer Mechanism
EJ Roller
Assy.
Right EJ Grounding Spring
Figure 2-84. Reattaching the Right EJ Grounding Spring
z Make sure that the Left and Right CD-R Links are
correctly installed.
z Make sure that the connector cable of the Tray/CD-R
Sensor does not interfere with the Right CD-R Link.
z Make sure that the EJ Frame Assy. moves smoothly
together with the CD-R Guide Assy.
Reinstalling the Main Frame Support Plate
z Tighten the screws in the order shown in Figure 2-79.
Disassembly and Assembly Disassembly 87
EPSON Stylus Photo R340/350 Revision A
2.3.22 Removing the Ink System
Illustration (1)
Right EJ Grounding Spring
Right Bottom Side
of the Printer
Guide Pin
Ribs
Right Front Side
of the Printer
Hooked
Tab
Head Cleaner
Pump Assy.
Acetate Tape
Main Frame
Support Plate
C.B.S 3x6
(7-9kgf.cm)
Shielding Rubber
Guide Pins
C.B.P 3x8
(5-7kgf.cm)
Cap Assy.
Parts/Components must be removed to remove the Ink System.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism
Disassembly Procedure
1. Remove the acetate tape and release the connector cable of the Tray/CD-R
Sensor.
2. Remove the Right EJ Grounding Spring from the Main Frame and the EJ
Roller Assy.
3. Remove the two screws ( ) that secure the Main Frame Support Plate, and
remove it.
4. Remove the screw ( ) that secures the Cap Assy.
C A U T I O N
Beware of the following items when performing the next step.
Never touch and damage the Head Cleaner and the Shielding
Rubber.
Do not disconnect the Ink Tubes that connected to the Cap
Assy. and the Pump Assy.
The Ink Tubes are adjusted to its optimum length and anchored
to the Pump Assy. with silicon material to prevent ink leakage.
Never attempt to disconnect the tubes from the Pump Assy.
5. Slide the Cap Assy. toward the inside of the Printer Mechanism to release the
Cap Assy. from the two guide pins ( ), and remove the Cap Assy. from the
two ribs ( ) of the Main Frame.
6. Release the three tabs ( ) and three guide pins ( ) that secure the Pump
Assy., and remove it together with the Cap Assy. while holding the Change
Lever Assy. and the all gears with your hand to prevent them falling.
Change Lever
Assy.
Hooked Tabs
Guide Pins
Figure 2-85. Removing the Ink System (1)
Disassembly and Assembly Disassembly 88
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
Combination Gear 27.2,19.2
Spur Gear 27.2
Retainers
Slider Lock Lever
Slider Cap Porous Pad
Combination Gear
20.82,24
Silicon Material
Ink Tube
Spur Gear 25.6
Guide Pins
Compression Spring 2.36
Cap Frame
Cap Slider
Extension
Spring 0.441
Change Lever
Hooked
Tabs
7. Remove the Combination Gear 20.82,24, Spur Gear 27.2, Change Lever
Assy., Combination Gear 27.2,19.2 from the Pump Assy.
8. Remove the Spur Gear 25.6 from the Change Lever.
9. Remove the Compression Spring 2.36 from the two guide pins ( ) of the
Change Lever.
10. Release the Ink Tube from the two retainers ( ) on the bottom of the Cap
Frame.
11. Remove the Extension Spring 0.441 from the tabs ( ) of the Cap Slider
and the Cap Frame with tweezers.
12. Push the Cap Slider up to remove the shaft from the notch of the Cap Frame,
and remove the Slider Lock Lever.
13. Remove the Cap Slider Porous Pad from the tab ( ) of the Cap Slider with
tweezers.
Reinstalling the Cap Slider Porous Pad
z Bend the Cap Slider Porous Pad along with the red line.
z Insert the tab of the Cap Slider Porous Pad into the hole,
and set the two positioning holes of the pad onto the tab.
Slider Cap Porous Pad
Bend Line
Tab
Hooked Tab
Hooked
Tab
Push it up
Positioning Holes
Hole
Figure 2-87. Reattaching the Cap Slider Porous Pad
Shaft
Figure 2-86. Removing the Ink System (2)
Disassembly and Assembly Disassembly 89
EPSON Stylus Photo R340/350 Revision A
Reinstalling the Slider Lock Lever
z Make sure that the Slider Lock Lever moves correctly
together with the Cap Slider.
Reinstalling the Ink System
z Make sure that the Ink Tube is connected at the position
shown in the figure below. Improper connection of the tube
may cause ink leakage.
Figure 2-88. Ink Tube Connection Position
z Check the green line printed on the Ink Tube to make sure
that the tube is not twisted.
z Make sure that the Cap Assy. moves smoothly.
z Make sure that the all gears are correctly set to the shaft of
the Pump Frame and move smoothly.
z Make sure the Pump Assy. is correctly secured.
z Make sure the Ink Tube is free of flattening or compression.
z Face the green line on the Ink Tube in the direction of the
arrow, and attach the tube to the two retainers ( ) on the
bottom of the Cap Frame in the order shown below.
The Green Line should
Face This Way
2
1
Figure 2-89. Reinstalling the Ink Tube
Reinstalling the Main Frame Support Plate
z Set the four positioning holes ( ) of the Main Frame
Support Plate onto the guide pins.
z Tighten the screws in the order shown below.
1
2
Positioning Holes
and Guide Pins
C.B.S 3x6
(7-9kgf.cm)
Figure 2-90. Reinstalling the Main Frame Support Plate
Disassembly and Assembly Disassembly 90
EPSON Stylus Photo R340/350 Revision A
2.3.23 Removing the Front Paper Guide and EJ Roller Assy.
Illustration (1)
PF Timing
Belt
Spur Gear
37.242
Compression
Spring 1.27
Spur Gear
41.38
Idle Roller Holder
EJ Frame Assy.
Left Side of
the Printer
Flat
Washer
12
Right Side of
the Printer
Flat Washer
Hooked Tab
Left Side of the Printer
Left EJ Link
Flat Washer
Right EJ Frame Shaft Guide
Right EJ Link
Parts/Components must be removed to remove the Front Paper Guide and
EJ Roller Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism, APG Assy., Print Head, Carriage Unit, CD-R Guide Assy.
Disassembly Procedure
1. Release the tab ( ) of the Right EJ Link from the groove of the Right EJ
Frame Shaft Guide, and remove the Right EJ Link.
2. Remove the flat washer that secures the right side of the EJ Frame Assy.
C A U T I O N
3. Release the PF Timing Belt from the Spur Gear 37.242 and the Spur Gear
4. Remove the flat washer that secures the Spur Gear 41.38 and pull out the Spur
C A U T I O N
When performing the next step, be careful not to lose the
Compression Spring 1.27 as it comes off when the tension of the Idle
Roller Holder is reduced.
41.38.
Gear 41.38.
When performing the next step, be careful not to damage or deform
the Star Wheels incorporated in the EJ Frame Assy.
Figure 2-91. Removing the Front Paper Guide and EJ Roller Assy. (1)
5. Remove the EJ Frame Assy. in the order and orientation shown in Figure
2-91.
6. Remove the flat washer that secures the Left EJ Link and slide the Left EJ
Link rightward.
Disassembly and Assembly Disassembly 91
EPSON Stylus Photo R340/350 Revision A
Illustration (2)
Left Side of
the Printer
Left EJ Frame
Shaft Guide
Hooked Tabs
PF Roller Assy.
Left Push Up Plate
Extension Spring
Right Side of
the Printer
Hooked
Tabs
Hooked Tabs
Right EJ Frame Shaft Guide
Right Push Up Plate Extension Spring
Left Side of
the Printer
Hooked Tabs
7. Remove the Left Push Up Plate Extension Spring from the tabs ( ) of the
Left EJ Frame Shaft Guide and the Main Frame.
8. Release the five tabs (three on the left ( ), two on the right ( )) that secure
the Left/Right EJ Frame Shaft Guides, and remove them.
9. Remove the Right Push Up Plate Extension Spring from the two tabs ( ) of
the Right EJ Frame Shaft Guide.
C A U T I O N
Beware of the following items when performing the next step.
Do not touch the Front Paper Guide Porous Pad and the Front
Paper Guide Left Porous Pad.
Be careful not to damage the ribs on the Front Paper Guide.
Exercise care not to scratch the surface of the PF Roller Assy.
10. Release the left tab ( ) that secures the Front Paper Guide, and release the
front tab ( ) to remove the Front Paper Guide.
11. Remove the Front Paper Guide Porous Pad, Front Paper Guide Left Porous
Pad, and the three Front Paper Guide Support Porous Pads from the Front
Paper Guide. See Section on page 52.
Hooked Tab
Front Paper Guide
Hooked Tab
EJ Roller Assy.
Figure 2-92. Removing the Front Paper Guide and EJ Roller Assy. (2)
Disassembly and Assembly Disassembly 92
EPSON Stylus Photo R340/350 Revision A
Illustration (3)
Left Side of
the Printer
Guide Pin
Bushing 5
Rubbers
Figure 2-93. Removing the Front Paper Guide and EJ Roller Assy. (3)
EJ Roller Assy.
Guide Pin
Right Side of
the Printer
Bushing 5
12. Pull out the two guide pins ( ) of the left and right Bushing 5s that secure the
EJ Roller Assy., and rotate the bushings in the direction of the arrow.
C A U T I O N
When performing the next step, be careful not to damage the
rubbers of the EJ Roller Assy.
13. Pull out the right Bushing 5 rightward from the shaft, and pull out the left and
right edges of the EJ Roller Assy. from the Main Frame (first from the left and
then right edge).
Disassembly and Assembly Disassembly 93
EPSON Stylus Photo R340/350 Revision A
Reinstalling the EJ Roller Assy.
z Make sure the left and right Bushing 5s are correctly
secured.
z When attaching the PF Timing Belt, be careful not to
damage the teeth of the Spur Gear 41.38.
z Make sure the EJ Roller Assy. moves smoothly.
Reinstalling the Front Paper Guide
z Make sure the two guide pins ( ) and the tab ( ) of the
Front Paper Guide are correctly set into the holes of the
Main Frame.
Left Side of
the Printer
Hooked Tab
Right Side of
the Printer
Figure 2-94. Reinstalling the Front Paper Guide
z Make sure the tabs of the Front Paper Guide Left Porous
Pad and the Front Paper Guide Support Porous Pads are
pulled out straight down through the notch of the Front
Paper Guide.
z Make sure there is no gap between the Front Paper Guide
and the Main Frame.
z If ribs on the Front Paper Guide are contaminated with
leaked ink, wipe it off with a cotton bud. Be careful not to
touch the Front Paper Guide Porous Pad with the cotton
bud.
Guide Pins
A D J U S T M E N T
R E Q U I R E D
Reinstalling the EJ Frame Assy.
z Put the left rear shaft of the EJ Frame Assy. through the
hole of the left EJ Link.
Hole of the Left EJ Link
EJ Frame Assy.
Left Rear Shaft
Figure 2-95. Reinstalling the EJ Frame Assy.
Whenever any one of the following parts are replaced, be sure to
apply proper amount of the specified oil to them. (See Chapter 4
for details on the lubrication.)
z Idle Roller Holder
z Front Paper Guide
z Left/Right EJ Frame Shaft Guides
z EJ Roller Assy.
z Bushing 5
Whenever the Front Paper Guide is reinstalled or replaced, be
sure to perform the required adjustments in the order given
below. (See Chapter 3 for details on the adjustments)
1. First Dot adjustment
2. PW Sensor adjustment
3. Head Angle adjustment
4. Bi-D Adjustment
Disassembly and Assembly Disassembly 94
EPSON Stylus Photo R340/350 Revision A
2.3.24 Removing the PF Motor
Illustration
PF Timing
Belt
Spur Gear
37.242
Compression
Spring 1.27
Spur Gear
41.38
Idle Roller Holder
Insulator Spacer
Figure 2-96. Removing the PF Motor
Left Side of
the Printer
Flat
Washer
Pinion Gear
4
2
Hexagon Nut, M3 (5 - 7 kgf.cm)
Compression Spring 1.53
(used only here)
PF Motor Insulator
PF Motor
1
Parts/Components must be removed to remove the PF Motor.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism
Disassembly Procedure
C A U T I O N
3
1. Release the PF Timing Belt from the Spur Gear 37.242 and the Spur Gear
2. Remove the flat washer that secures the Spur Gear 41.38 and pull out the Spur
3. Remove the Compression Spring 1.27 and the Idle Roller Holder together
C A U T I O N
When performing the next step, be careful not to lose the
Compression Spring 1.27 as it comes off when the tension of the Idle
Roller Holder is reduced.
41.38.
Gear 41.38.
with the Timing Belt.
Beware of the following items when performing the next step.
Be careful not to damage the pinion gear of the PF Motor.
Be careful not to lose the Compression Spring 1.53 as it may
come off when the PF Motor is removed.
4. Remove the four nuts that secure the PF Motor and remove it.
Tighten the nuts to secure the PF Motor in the order shown in
Figure 2-96.
Make sure that there is no gap between the Insulator Spacer
and the Main Frame.
Disassembly and Assembly Disassembly 95
EPSON Stylus Photo R340/350 Revision A
2.3.25 Removing the PF Roller Assy.
Illustration
Rear Paper Guide
PF Roller Assy.
Left PF Roller Bushing
NotchC Ring
PF Grounding
Spring
Right PF Roller Bushing
Flat Washer
Parts/Components must be removed to remove the PF Roller Assy.
Paper Support Assy., Left Housing, Right Housing,
Panel Board Assy. (Panel Board and LCD Module), Upper Housing,
Rear Housing, Main Board Assy., ASF Assy., Shaft Assy. Holder,
Printer Mechanism, APG Assy., Print Head, Carriage Unit, CD-R Guide Assy.,
Front Paper Guide, Upper Paper Guide
Disassembly Procedure
1. Remove the PF Grounding Spring from the notch ( ) of the Main Frame
with tweezers and then remove the spring from the PF Roller Assy.
C A U T I O N
2. Pull out the C ring from the PF Roller Assy. leftward, and move the Left PF
3. Remove the flat washer from the right edge of the PF Roller Assy. and move
4. Lift the PF Roller Assy. along with the notch of the Main Frame, then release
When performing the next step, be careful not to touch or damage
the coated part of the PF Roller Assy.
Roller Bushing inward.
the Right PF Roller Bushing inward.
the assy. from the two tabs ( ) of the Rear Paper Guide, and remove the assy.
Hooked tab
Hooked tab
Figure 2-97. Removing the PF Roller Assy.
Disassembly and Assembly Disassembly 96
EPSON Stylus Photo R340/350 Revision A
Reattaching the Rear Paper Guide which has become detached
z Insert the both ends of the Torsion Spring 21.2 of the Rear
Paper Guide into the holes ( ) of the Main Frame.
Rear Side of the Printer
Holes
Torsion Spring 21.2
Figure 2-98. Reattaching the Rear Paper Guide
Reinstalling the PF Roller Assy.
z Set the guide pins of the Left/Right PF Roller Bushings into
the positioning holes.
Guide PinGuide Pin
Figure 2-99. Reinstalling the Left/Right PF Roller Bushings
A D J U S T M E N T
R E Q U I R E D
Whenever any one of the following parts are replaced, be sure to
apply proper amount of the specified oil to them. (See Chapter 4
for details on the lubrication.)
z PF Roller Assy.
z PF Grounding Spring
Disassembly and Assembly Disassembly 97
ADJUSTMENT
CHAPTER
3
EPSON Stylus Photo R340/350 Revision A
3.1 Adjustment Items and Overview
This chapter describes adjustments to be made after the disassembly/reassembly of this product.
3.1.1 Replacement Part-Based Adjustment Priorities
The following table shows the adjustment items and their order for the replacement
parts.
Note: “Required” in this table indicates the adjustment items that must be implemented when the
corresponding parts/units have been removed or replaced. “Recommended”, on the other
hand, indicates those which are recommended the adjustment after removing or replacing
them. “-” means the adjustment is not needed.
When having removed or replaced more than one part/unit, refer to the items that correspond
to the parts/units.
Table 3-1. Adjustment Item
Performance Priority 1 2 3 4 5 6 7 8 9 10 11 12
Head
Angular
Adjustment
Bi-d
Adjustment
ASF Assy. Removal
ASF Assy. Replacement
CR Motor Removal
CR Motor Replacement
Upper Paper Guide Removal
Upper Paper Guide
Replacement
EJ Frame Assy. Removal
EJ Frame Assy. Replacement
Carriage Unit Removal
Carriage Unit Replacement
Print Head Removal
Print Head Replacement
Main Board Assy. Removal
Main Board Assy. Replacement
(Read OK)
Main Board Assy. Replacement
(Read NG)
EEPROM
Data Copy
- - - - - - - Required - - - -
- - - - - - - Required - - - -
- - - - - - - Required Required Recommended Required -
- - - - - - - Required Required Recommended Required Required
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - Required Required Required Recommended Required -
- - - - - - Required Required Required Recommended Required -
- - - - - - Required Required Required Required Required -
- - - - Required Required Required Required Required Required Required -
- - - - - - - - - - - -
Required - - - - - -
- Required Required
Market
Setting
USB ID
Input
Waste Ink
Pad Counter
Required
(Replacing
Waste Ink
Pads)
Ink Charge
- Required - Required Required Required Required Required
Head ID
Input
PG
Adjustment
First dot
Adjustment
- - - - -
PW Sensor
Adjustment
Offset Input
for CR Motor
Calorific
Limitation
Adjustment Adjustment Items and Overview 99
EPSON Stylus Photo R340/350 Revision A
Performance Priority 1 2 3 4 5 6 7 8 9 10 11 12
Shaft Assy. Holder Removal
Shaft Assy. Holder
Replacement
CR Guide Shaft Removal
CR Guide Shaft Replacement
EJ Roller Assy. Removal
EJ Roller Assy. Replacement
Power Supply Assy. Removal
Power Supply Assy.
Replacement
Front Paper Guide Removal
Front Paper Guide Replacement
PF Motor Removal
PF Motor Replacement
Waste Ink Pads Removal
Waste Ink Pads Replacement
PW Sensor Removal
PW Sensor Replacement
Printer Mechanism Removal *1)
EEPROM
Data Copy
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - Required Required Required - Required -
- - - - - - Required Required Required - Required Required
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - Required
- - - - - - - Recommended Recommended Recommended Required -
- - - - - - - Recommended Recommended Recommended Required -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
- - - Required - - - - - - - -
- - - - - - - - Required - - -
- - - - - - - - Required - - -
- - - - - - Recommended - - - - -
Market
Setting
USB ID
Input
Waste Ink
Pad Counter
Ink Charge
Head ID
Input
PG
Adjustment
First dot
Adjustment
PW Sensor
Adjustment
Head
Angular
Adjustment
Bi-d
Adjustment
Offset Input
for CR Motor
Calorific
Limitation
Printer Mechanism
Replacement *1)
Ink System Removal
Ink System Replacement
- - - - - - Recommended - - - - -
- - - - - - - - - - - -
- - - - - - - - - - - -
*1) The adjustment has been completed at the unit level of ASP supply. However, since “Main Board”, “Print Head” and “ASF” are supplied separately, refer to the each item that corresponds to the
part/unit.
Adjustment Adjustment Items and Overview 100
EPSON Stylus Photo R340/350 Revision A
3.2 Adjustment by using adjustment program
The procedures of the adjustment items will be explained here. Servicing Adjustment Item List
The adjustment items of this product are as follows. For details of the adjustment items, refer to the detailed procedures and sketches of the adjustment items.
Table 3-2. Adjustment Items
Function Item Purpose Method Outline Used Media
Market Setting After replacing the Main Board, write the market setting
information onto the new board.
USB ID Input This adjustment is made to allow the PC to recognize the
connected printers individually when multiple printers of the
same model are connected and used with the PC via a USB
hub.
Head ID Input At the time of Print Head replacement, this adjustment is
made to correct head manufacturing variations and eliminate
the individual differences of print quality.
Head Angular
Adjustment
Adjustment items
Bi-D Adjustment This adjustment is made to correct the print timing in the go
PW Sensor
Adjustment
This adjustment is made to correct the error in the Print Head
mounting position (angle of the Print Head to the paper
surface) to keep the nozzle intervals uniform in the CR main
scanning direction.
and return paths in bi-directional printing.
(This printer carries out printing with PG (typ.) and PG (-))
This adjustment is made to correct the mounting position of
the PW Sensor on a software basis to minimize the paper
detection error caused by the variations of the mounting
position.
After replacing the Main Board, write the market setting information onto the new
board.
Market ID, CSIC
Enter the serial numbers of the printers. The correction value is saved to the
specific EEPROM address on the Main Board.
Enter the ID of the Head QR code label applied to the Print Head to save it to the
EEPROM on the Main Board. (Supplement: Read the QR code label from left to
right on the top row and from top to bottom in due order.)
Print the adjustment pattern. Check the displacement amount of the pattern. Print
the exclusive pattern again and adjust the displacement amount.
Print the adjustment patterns to check the displacement amounts of the patterns.
Select/enter the pattern number that has the smallest displacement amount in the
program. Print the exclusive patterns again and adjust the displacement amount.
The correction value is saved into the EEPROM.
Print the adjustment patterns. Select the pattern number 5mm away from each
edge, and enter that number in the program. The correction value is saved to the
specific EEPROM address on the Main Board.
Non-target
Non-target
Non-target
Plain paper (A4)
Photo Quality Ink
Jet Paper (A4)
Plain paper (A4)
Adjustment Adjustment by using adjustment program 101
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