Epson Stylus Photo R320 Service Manual

SERVICE MANUAL

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Color Inkjet Printer

EPSON Stylus Photo R320

SEIJ04005

PRECAUTIONS

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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.

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.

WARNING

About This Manual

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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:

• 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

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Revision Issued Date Description

A September 3, 2004 First Release

B September 27, 2004 Revised Contents

[Chapter 2]

• Checkpoint (page 37) : Newly added

• Page 47, 48, 52, 54, 55, 68, 69 : Corrected errors

• Adjustment item for PF Timing Belt (page 80) : Deleted

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CONTENTS

Chapter 1 TROUBLESHOOTING

1.1 Overview .............................................................................................................. 8

1.2 Troubleshooting with LED/LCD Indications and Status Monitor 3 Message ..... 9

1.3 Unit Level Troubleshooting ............................................................................... 14

Chapter 2 DISASSEMBLY AND ASSEMBLY

2.1 Overview ............................................................................................................ 32

2.1.1 Precautions ................................................................................................. 32

2.1.2 Tools .......................................................................................................... 33

2.1.3 Pre-Shipment Checks ................................................................................. 33

2.2 Caution regarding assembling/disassembling the printer mechanism,

and how to ensure the quality of reassembled product ....................................... 35

2.3 Disassembly ........................................................................................................ 37

2.3.1 Removing Paper Support Assy. ................................................................. 38

2.3.2 Removing Preview Monitor Unit .............................................................. 39

2.3.3 Removing Housing, Upper ........................................................................ 40

2.3.4 Removing Housing, Middle ....................................................................... 41

2.3.5 Removing Porous Pad, Paper Guide, Front, Left, Support ........................ 43

2.3.6 Removing Panel Board .............................................................................. 45

2.3.7 Removing Stacker Assy. ............................................................................ 46

2.3.8 Removing Main Board .............................................................................. 47

2.3.9 Removing ASF Assy. ................................................................................ 50

2.3.10 Removing Holder, Shaft Assy. ................................................................ 53

2.3.11 Removing CR Motor ............................................................................... 56

2.3.12 Removing APG Assy. .............................................................................. 57

2.3.13 Removing Print Head .............................................................................. 59

2.3.14 Removing Carriage Unit .......................................................................... 60

2.3.15 Removing Paper Guide, Upper ................................................................ 66

2.3.16 Removing Printer Mechanism/Housing, Lower ...................................... 67

2.3.17 Removing Power Supply Unit ................................................................. 71

2.3.18 Removing CDR Guide Assy. ................................................................... 72

2.3.19 Removing Ink System .............................................................................. 74

2.3.20 Removing Paper Guide, Front/Roller EJ Assy. ....................................... 77

2.3.21 Removing PF Motor ................................................................................ 81

Chapter 3 ADJUSTMENT

3.1 Adjustment Items and Overview ........................................................................ 83

3.1.1 Servicing Adjustment Item List ................................................................. 83

3.1.2 Replacement Part-Based Adjustment Priorities ........................................ 86

3.2 Adjustment by using adjustment program .......................................................... 88

3.2.1 Market Setting ........................................................................................... 88

3.2.2 USB ID Input ............................................................................................. 88

3.2.3 Head ID Input ............................................................................................ 88

3.2.4 Head Angular Adjustment ......................................................................... 89

3.2.5 Bi-d Adjustment ........................................................................................ 89

3.2.6 PW Sensor Adjustment .............................................................................. 90

3.2.7 First Dot Adjustment ................................................................................. 90

3.2.8 Offset Input for CR Motor Calorific Limitation ........................................ 91

3.2.9 A4 Normal Paper Print .............................................................................. 91

3.2.10 A4 Photo Quality Inkjet Paper Print ........................................................ 91

3.2.11 A4 Photo Paper/ Glossy Photo Paper print .............................................. 91

3.3 Adjustment Except Adjustment Program ........................................................... 92

3.3.1 PG Adjustment .......................................................................................... 92

3.4 Firmware Updating ............................................................................................. 95

3.4.1 Firmware Updating Procedure ................................................................... 95

3.4.2 Abnormal Updating Termination .............................................................. 96

Chapter 4 MAINTENANCE

4.1 Overview ............................................................................................................ 98

4.1.1 Cleaning ..................................................................................................... 98

4.1.2 Service Maintenance .................................................................................. 98

4.1.3 Lubrication ............................................................................................... 100

Chapter 5 APPENDIX

5.1 Exploded Diagram ............................................................................................ 108

5.2 Electrical Circuits ............................................................................................. 108

TROUBLESHOOTING

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CHAPTER

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1.1 Overview

This chapter describes how to identify troubles in two levels: unit level repair and component level repair. Refer to the flowchart in this chapter to identify the defective unit and perform component level repair if necessary. This chapter also explains motor coil resistance, Sensor specification and error indication.

START

UNIT-LEVEL TROUBLESHOOTING

UNIT REPAIR

ASSEMBLY AND ADJUSTMENT

END

Figure 1-1. Troubleshooting Flowchart

Table 1-1. Motor, Coil Resistance

Motor Location Check Point Resistance

PF Motor

(Same as ASF/

Pump Motor)

CN9

Pin 1 and 3

Pin 2 and 4

3.0Ω ±10%

(25°C/phase)

Since CR Motor and APG Motor are DC motors, the resistance value among the electric poles varies. Therefore, the values cannot be used to judge the abnormality. The only way to judge it is visible status like if the motor rotates or not. Naturally the accurate judgement is impossible, so replace the motor when it is suspected.

Table 1-2. Sensor check point

Sensor name Location Check point Signal level Switch mode

Off : No paper

On : Detect paper

Off : Anywhere of PG

On : In process of switching PG

On : ASF mode

Off : CDR mode

Off : No CDR Tray

On : Detect CDR Tray

PE Sensor CN4 Pin 1 and 2

PG Sensor CN5 Pin 1 and 2

Star Wheel

Sensor

CDR Sensor CN6 Pin 3 and 4

CN6 Pin 1 and 2

More than 2.4V

Less than 0.4V

More than 2.4V

Less than 0.4V

TROUBLESHOOTING Overview 8

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1.2 Troubleshooting with LED/LCD Indications and Status Monitor 3 Message

This section describes the LED/LCD indication, the STM3 message and the error condition when the printer detects an error in each operation such as the power on, the paper loading/feeding and the ink absorption operation.

Table 1-3. LED/LCD Indication and STM3

Printer status

Communication Error -- --

Ink Low Condition Blink (Ink icon blinks)

Maintenance

LED indication

LCD indication STM3 message Condition for error detection

This error is detected when the printer cannot communicate with the PC properly.

This error is detected when the ink consumption reaches about 90%.

(Note) When the Ink Low Condition is detected, the Maintenance LED will blink. The printer will continue to keep this LED status even if a new Ink Cartridge is installed in the Ink Cartridge replacement position. However, this LED status will be reset (LED off) when "Carriage Unit" returns to the home position.

TROUBLESHOOTING Troubleshooting with LED/LCD Indications and Status Monitor 3 Message 9

Note : Printing operation can be performed until it becomes ink end condition even after the error message is displayed on STM3. However, the Head Cleaning operation may not be performed due to the Ink Low condition.

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Table 1-3. LED/LCD Indication and STM3

Printer status

Ink Out Error On

Maintenance

LED indication

LCD indication STM3 message Condition for error detection

Ink out Black: T0481 For best results, use genuine EPSON ink.

Ink cartridges cannot be recognized Cyan: T0482 For best results, use genuine EPSON ink.

This error is detected in either of the following cases.

1. The ink consumption reached 100%.

2. The Ink Cartridge is faulty. (CSIC memory data error)

(Note) Even in the Ink Out Error status, a small amount of ink still remains in the Ink Cartridge to protect the Print Head from printing without ink.

This error is detected when the Ink Cartridge has not installed, or not installed properly.

No Ink Cartridge Blink

TROUBLESHOOTING Troubleshooting with LED/LCD Indications and Status Monitor 3 Message 10

Ink cartridges cannot be recognized Light Cyan: T0485 For best results, use genuine EPSON ink.

This error is detected when the printer cannot read and write the CSIC information of the installed Ink Cartridge.

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Table 1-3. LED/LCD Indication and STM3

Printer status

Paper Out Error On

Paper Jam Error

(Including CD/DVD)

Maintenance

LED indication

LCD indication STM3 message Condition for error detection

Paper load error. Load correctly and press Maintenance.

A paper jam has occurred. See your printer's documentation for information about clearing the jam.

This error is detected when the leading edge of paper cannot be detected with the PE Sensor in a paper loading.

This error is detected when ;

1. The posterior end of paper cannot be correctly detected with the PE Sensor in a paper loading.

2. The rear of CD/DVD cannot be correctly detected with the Star Wheel/CDR Sensor in a CD/DVD loading.

Maintenance Request On

TROUBLESHOOTING Troubleshooting with LED/LCD Indications and Status Monitor 3 Message 11

Service required. Printer parts are at end of service life. See printer manual for details.

This error is detected when the value of the Waste Ink Pad Counter A set in EEPROM reaches its limit (Variable between 20000 and 46750 points).

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Table 1-3. LED/LCD Indication and STM3

Printer status

CD/DVD Guide Error On

CD/DVD Tray Error On

Maintenance

LED indication

LCD indication STM3 message Condition for error detection

Close the CD/DVD guide.

The CD/DVD tray load error. Reload tray and press Maintenance.

This error is detected when ;

1. Paper is present in "ASF Assy.", and "CDR Guide Assy." is open while receiving print data.

2. "CDR Guide Assy." opens while printing.

3. "CDR Guide Assy." is open while receiving ASF paper feed data.

4. Attempting to replace the ink while "CDR Guide Assy." is open.

This error is detected when "CD/DVD Tray" cannot be detected when printing CD/DVD.

Memory Card Error

(Non supported

Memory Card)

Bluetooth Module Error On

Irregular external device Blink

TROUBLESHOOTING Troubleshooting with LED/LCD Indications and Status Monitor 3 Message 12

The inserted card cannot be used with this printer.

Bluetooth Photo Print Adapter error. Disconnect the Adapter from the printer, then reconnect it.

The connected device cannot be used. (The warning is displayed for one second every 3 seconds.)

No Display

This error is detected when nonstandardized Memory Card is inserted.

This error is detected when there is no response from Bluetooth Module.

This error is detected when some non supported device is connected to the port for the external memory device.

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Table 1-3. LED/LCD Indication and STM3

Printer status

Fatal error On

Maintenance

LED indication

LCD indication STM3 message Condition for error detection

System error. Press and hold both Power and Stop buttons for 7 seconds.

This error is detected when ;

1. "Carriage Unit" cannot move correctly by the external force in each operation.

2. "PF Motor" cannot rotate correctly while "PF Motor" operates.

TROUBLESHOOTING Troubleshooting with LED/LCD Indications and Status Monitor 3 Message 13

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1.3 Unit Level Troubleshooting

You can identify the troubles by using the checklist in this section after confirming the LED/LCD indication on the control panel or the error message displayed on STM3 of the PC connected to the printer. As a result, you can save the whole repair time. When finding any faulty parts, refer to Chapter 2 "ASSEMBLY/DISASSEMBLY" and replace them. Following tables describe the error conditions (LED/LCD and STM3) and their possible cause.

Table 1-4. Check Points for Communication Error to Each Phenomenon

Occurrence Timing

Position of CR

At power-on

Anywhere

At operation

Phenomenon Detail

When turning the power on, the printer does not operate at all.

When turning the power on, the initialization is performed correctly. However, a Communication Error is displayed on STM3 even transferring the printing job to the printer.

Faulty Part/

Part Name

Power Supply

Board

Main Board

USB Cable

Printer Driver

1. Check if "Power Supply Board Cable" is connected to the CN2 on "Main Board".

2. Check if "Power Supply Board Cable" is not damaged.

1. Check if the correct model name is written in EEPROM on "Main Board".

1. Check if "USB Cable" is connected properly between the printer and the PC.

1. Check if the Stylus Photo R320 Printer Driver is used for the printer job.

The following is the example of how to use the tables.

Example) When "Carriage Unit" is out of the home position at the power on timing,

the Fatal Error may be caused by the failure of "CR Motor". Moreover, there are 3 possible causes on "CR Motor" failure.

(Note) When individual part that makes up "Roller EJ Assy.", "PF Motor" and "Ink System Assy." is defective, replace the Printer Mechanism with a new one basically. However, if an individual part needs to be replaced urgently, execute the necessary operation by referring to Chapter 2 "ASSEMBLY/DISASSEMBLY".

Check Point Remedy

1. Connect "Power Supply Board cable" to the CN2 on "Main Board".

2. Replace "Power Supply Board" with a new one.

* If the problem still occurs, replace "Main

Board".

1. Write proper Market Setting to the EEPROM using the Adjustment Program.

1. Connect the printer and the PC with a "USB Cable".

1. Install the Stylus Photo R320 Printer Driver on the PC.

TROUBLESHOOTING Unit Level Troubleshooting 14

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Table 1-5. Check Points for Error Before the Initial Ink Charge, Error Before Ink Cartridge Replacement Cleaning and No Ink Cartridge Error

Occurrence Timing

Position of CR

At power-on

At HP

At power-on

Anywhere

Occurrence Timing

Position of CR

Phenomenon Detail

The printer does not perform the Initial Ink Charge and the error is displayed on LED and STM3.

The printer does not perform the Ink Replacement Cleaning and the error is displayed on LED and STM3.

The printer does not perform any print operation and the error is displayed on LED and STM3.

Table 1-6. Check Points for Paper Out Error to Each Phenomenon

Phenomenon Detail

Faulty Part/

Part Name

Ink Cartridge

Main Board

Ink Cartridge

Faulty Part/

Part Name

Check Point Remedy

1. Check if the Ink Cartridge is normal by installing it in another printer.

1. Check if the correct data has been written in the address 5B<H> of EEPROM on "Main Board". (You cannot check it only with the Adjustment Program of Stylus Photo R320.)

1. Check if the Ink Cartridge is normal by installing it in another printer.

1. Check if ink still remains in the Ink Cartridge.

2. Check if the Ink Cartridge is normal by installing it in another printer.

Check Point Remedy

1. Check if "Hopper" works properly while feeding paper. 1. Reassemble "ASF Frame" and "Compression

1. Replace the Ink Cartridge with a new one.

1. Write proper Market Setting to the EEPROM using the Adjustment Program.

1. Replace the Ink Cartridge with a new one.

2. Replace the Ink Cartridge with a new one.

Spring, 2.51" correctly.

At operation

"Holder, Shaft, LD Roller" rotates to feed paper, but "Hopper" does not operate.

TROUBLESHOOTING Unit Level Troubleshooting 15

Compression Spring, 2.51

ASF Assy.

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Table 1-6. Check Points for Paper Out Error to Each Phenomenon

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

When feeding paper, the leading edge of paper is detected properly, but the paper is ejected without being set at the print start position.

"PF Motor" and "Spur Gear, 37.242" rotate properly, but "Holder, Shaft, LD Roller" does not feed paper. (The driving of "PF Motor" is not transmitted to "Holder, Shaft, LD Roller".)

Faulty Part/

Part Name

ASF Assy.

Holder, Shaft,

LD Roller

Check Point Remedy

1. Check if "Roller, Retard Assy." operates properly while feeding paper.

1. Check if "Extension Spring,0.143" in "Clutch Mechanism" has not come off.

2. Check if "Clutch" has not come off from the dowel of "Shaft, LD Roller".

3. Check if "Clutch Tooth" is not damaged.

Extension Spring, 0.143

Clutch Tooth

1. Reassemble "Extension Spring, 0.45" located the rear side of "Roller, Retard Assy.".

Extension

Spring, 0.45

1. Reassemble "Extension Spring, 0.143" in "Clutch Mechanism".

2. Reassemble the round portion of "Clutch" on the dowel of "Shaft, LD Roller".

3. Replace "Holder, Shaft, LD Roller" with a new one.

TROUBLESHOOTING Unit Level Troubleshooting 16

Paper Guide,

Upper

(Only HP side)

Dowel of "Holder, Shaft, LD Roller"

4. Check if "Clutch" is not damaged.

1. Check if "Paper Guide, Upper" (only HP side) has not come off from "Main Frame".

4. Replace "Holder, Shaft, LD Roller" with a new one.

1. Reassemble "Paper Guide, Upper" to "Main Frame".

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Table 1-6. Check Points for Paper Out Error to Each Phenomenon

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

"PF Motor" and "Spur Gear, 37.242" rotate properly, but "Holder, Shaft, LD Roller" does not feed paper. (The drive of "PF Motor" is not transmitted to "Holder, Shaft, LD Roller".)

"Holder, Shaft, LD Roller" is not set in the ASF home position and paper is always fed from "ASF Assy.".

"Holder, Shaft, LD Roller" does not feed paper during the feeding operation. "PF Motor" and "Spur Gear, 37.242" also does not rotate at all.

Faulty Part/

Part Name

Ink System

PF Motor*

Check Point Remedy

1. Check if "Compression Spring, 2.36" of "Lever, Change"

1. Replace "Ink System" with a new one.

does not come off.

Lever, Change

Compression Spring, 2.36

1. Check if the tip of "Lever, Change" is damaged. 1. Replace "Ink System" with a new one.

1. Check if "PC Connector Cable" is connected to CN9 on "Main Board".

2. Check if the coil resistance of "PF Motor" is

1. Connect "PF Motor Connector Cable" to CN9 on "Main Board".

2. Replace "PF Motor" with a new one.

approximately 3.0Ω with a tester. Refer to Table 1-1.

3. Check if "PF Motor Connector Cable" is damaged.

1. Check if the surface of "LD Roller" is contaminated with paper dust.

3. Replace "PF Motor" with a new one.

1. Remove the dust by using a soft brush or soft cloth moistened with alcohol.

At operation

"Holder, Shaft, LD Roller" rotates properly, but paper is not fed.

TROUBLESHOOTING Unit Level Troubleshooting 17

Holder, Shaft

LD Roller

* If the problem is not solved, replace "LD

Roller" with a new one.

LD Roller

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Table 1-7. Check Points for Paper Jam Error to Each Phenomenon

Occurrence

Timing

Position of CR

At power-on

Anywhere

Phenomenon Detail

Faulty Part/

Part Name

"PF Motor" does not work at all. PF Motor

ASF Assy.

Paper feeding operation is performed normally, but paper is not sent into the printer.

Check Point Remedy

1. Check if "PF Motor Connector Cable" is connected to CN9 on "Main Board".

2. Check if the coil resistance of "PF Motor" is approximately 3.0Ω with a tester. Refer to Table 1-1.

3. Check if "PF Motor Connector Cable" is damaged.

1. Check if "Roller, Retard Assy." operates properly while feeding paper.

1. Check if "Torsion Spring, 0.22" is not unfastened from "PE Sensor Lever".

1. Connect "PF Motor Connector Cable" to CN9 on "Main Board".

2. Replace "PF Motor" with a new one.

3. Replace "PF Motor" with a new one.

1. Reassemble "Extension Spring, 0.45" located rear side of "Roller, Retard Assy.".

Extension

Spring, 0.45

1. Reassemble "Torsion Spring, 0.22"

TROUBLESHOOTING Unit Level Troubleshooting 18

PE Sensor

Torsion Spring, 0.22

2. Check if "PE Sensor Cable" is not unfastened.

3. Check if "PE Sensor Cable" is correctly mounted on "Holder, Shaft, LD Roller".

4. Check if "PE Sensor Cable" is not damaged.

2. Connect "PE Sensor" Connector to CN4 on "Main Board".

3. Remount "PE Sensor Cable" correctly.

4. Replace "PE Sensor" with a new one.

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Table 1-7. Check Points for Paper Jam Error to Each Phenomenon

Occurrence

Timing

Position of CR

At operation

Out of HP

At operation

Phenomenon Detail

"Carriage Unit" moves to the home position properly when turning on the power. Then paper feeding operation is performed normally, but paper is not sent into the printer.

When feeding paper, the leading edge of paper is detected properly, but the paper is ejected without being set at the print start position. At this time, the next paper is fed to "PE Sensor Lever".

Faulty Part/

Part Name

PE Sensor*

ASF Assy.

Frame EJ Assy.**

Paper Guide, Front

Check Point Remedy

1. Check if "Torsion Spring, 0.22" for "PE Sensor Lever" is not unfastened.

2. Check if "PE Sensor Cable" is correctly mounted on "Holder, Shaft, LD Roller".

1. Check if "Roller, Retard Assy." operates properly while feeding paper.

1. Check if "Star Wheels" have not come off.

2. Check if "Frame EJ Assy." is correctly assembled.

3. Check if "Frame EJ Assy." is not transformed downward.

1. Check if "Porous pad" of "Paper Guide, Front" has not come off.

1. Reassemble "Torsion Spring, 0.22".

2. Remount "PE Sensor Cable" correctly.

1. Reassemble "Extension Spring, 0.45" back of "Roller, Retard Assy."

Extension

Spring, 0.45

1. Reassemble "Star Wheels" correctly.

2. Reassemble "Frame EJ Assy." correctly.

3. Replace "Frame EJ Assy." with a new one.

1. Remount "Porous pad" correctly.

The leading edge of paper does not go through between "Roller EJ Assy." and "Star Wheels".

TROUBLESHOOTING Unit Level Troubleshooting 19

Roller EJ Assy.

1. Check if "Roller EJ Assy." is correctly assembled.

2. Check if "Spur Gear, 41.48" has not come off.

Spur Gear, 41.48

1. Reassemble "Roller EJ Assy." correctly onto "Printer Mechanism".

2. Reattach "Spur Gear, 41.48" to "Roller EJ Assy." correctly.

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Table 1-7. Check Points for Paper Jam Error to Each Phenomenon

Occurrence

Timing

Position of CR

At operation

* "Carriage Unit" can move to the home position even if "Extension Spring, 0.22" has come off or "PE Sensor" is not set in the correct position. However, in the next operation, a Paper Jam Error

will be detected since "PE Sensor Lever" will maintain the High signal status.

** There some cases where the jammed paper may damage "Print Head" by contacting the surface of "Print Head nozzle" when a Paper Jam Error occurs in each operation.

The leading edge of paper is not sent to "PF Roller".

Phenomenon Detail

Faulty Part/

Part Name

Paper Guide,

Upper

Check Point Remedy

1. Check if "Paper Guide, Upper" has not come off from "Main Frame".

Paper Guide, Upper

1. Reattach "Paper Guide, Upper" to "Main Frame".

TROUBLESHOOTING Unit Level Troubleshooting 20

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Table 1-8. Check Points for CD/DVD Guide Error to Each Phenomenon

Occurrence Timing

Position of CR

At power-on

At HP

Phenomenon Detail

An error occurs even if "CDR Guide Assy." is closed when turning on the power.

Faulty Part/

Part Name

Housing, Middle

Star Wheel/

CDR Sensor

Check Point Remedy

1. Check if the contact point of "Housing, Middle" with "Star Wheel/CDR Sensor" is cracked.

Contact

point

1. Check if "Star Wheel/CDR Sensor" is connected to CN6 on "Main Board".

Star Wheel/CDR Sensor

1. Replace "Housing, Middle" with a new one.

1. Connect "Star Wheel/CDR Sensor" to CN6 on "Main Board".

TROUBLESHOOTING Unit Level Troubleshooting 21

Main Board

2. Check if "Star Wheel/CDR Sensor" is damaged.

2. Replace "Star Wheel/CDR Sensor" with a new one.

3. Check if "Star Wheel/CDR Sensor" cable is cut off.

3. Replace "Star Wheel/CDR Sensor" with a new one.

1. Check if any device on "Main Board" is damaged. 1. Replace "Main Board" with a new one.

EPSON Stylus Photo R320 Revision B

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Table 1-9. Check Points for CD/DVD Tray Error to Each Phenomenon

Occurrence Timing

Position of CR

When printing

CDR/DVDR

Phenomenon Detail

An error occurs even though "CDR Tray" is set when printing CDR/DVDR.

Faulty Part/

Part Name

CDR Tray

CDR Tray Sensor

Check Point Remedy

1. Check if the contact point of "CDR Tray" with "CDR Tray Sensor" is cracked.

Contact point

1. Check if "CDR Tray Sensor" is connected to CN6 on "Main Board".

CDR Tray Sensor

2. Check if "CDR Tray Sensor" is damaged.

1. Replace "CDR Tray" with a new one.

1. Connect "CDR Tray Sensor" to CN6 on "Main Board".

2. Replace "CDR Tray Sensor" with a new one.

TROUBLESHOOTING Unit Level Troubleshooting 22

Main Board

3. Check if "CDR Tray Sensor Connector Cable" is cut off.

1. Check if any device on "Main Board" is damaged. 1. Replace "Main Board" with a new one.

3. Replace "CDR Tray Sensor" with a new one.

EPSON Stylus Photo R320 Revision B

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Table 1-10. Check points for Memory Card Error to Each Phenomenon

Occurrence Timing

Position of CR

When inserting

Memory Card

Phenomenon Detail

The Memory Card is not detected, and an error is displayed on LED and STM3.

Faulty Part/

Part Name

Memory Card

Main Board

Check Point Remedy

1. Check if the Memory Card is compliant.

2. Check if the Memory Card is damaged.

1. Check if there is any damage on the slot pin of the loading slot for Memory Cards.

2. Check if any elements on "Main Board" is damaged.

1. Replace the Memory Card with a compliant one.

2. Replace the Memory Card with a new one.

1. Replace "Main Board" with a new one.

2. Replace "Main Board" with a new one.

TROUBLESHOOTING Unit Level Troubleshooting 23

EPSON Stylus Photo R320 Revision B

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Table 1-11. Check Points for Fatal Error to Each Phenomenon

Occurrence Timing

Position of CR

At power-on

Out of HP

Phenomenon Detail

"CR Motor" does not work at all when turning on the power.

"Carriage Unit" strikes on "Lever, Change" because the lever is leaning forward when turning on the power.

Faulty Part/

Part Name

CR Motor

PF Motor

Ink System

Check Point Remedy

1. Check if "CR Motor Connector Cable" is connected to CN8 on "Main Board".

2. Check if "CR Motor Connector Cable" is damaged.

1. Check if "PF Motor Connector Cable" is connected to CN9 on "Main Board".

2. Check if the resistance of "PF Motor" is approximately

3.0Ω using a tester. Refer to Table 1-1.

3. Check if "PF Motor Connector Cable" is damaged.

1. Check if "Compression Spring, 2.36" of "Lever, Change" has not come off.

Lever, Change

Compression Spring, 2.36

1. Check if "Paper Guide, Upper" has come off from "Main Frame".

1. Connect "CR Motor Connector Cable" to CN8 on "Main Board".

2. Replace "CR Motor" with a new one.

1. Connect "PF Motor Connector Cable" to CN9 on "Main Board".

2. Replace "PF Motor" with a new one.

3. Replace "PF Motor" with a new one.

1. Replace "Ink System" with a new one.

1. Reassemble "Paper Guide, Upper" to "Main Frame".

"Carriage Unit" strikes on "Paper Guide, Upper" which has come off from "Main Frame" when turning on the power.

At power-on

Anywhere

"Carriage Unit" strikes on the right side of "Main Frame" when turning on the power.

TROUBLESHOOTING Unit Level Troubleshooting 24

Paper Guide,

Upper

CR Scale

Paper Guide, Upper

1. Check if "CR Scale" has come off, or it properly passes through the slit of "CR Encoder Sensor Board".

1. Reassemble "CR Scale" correctly.

* If the problem is not solved, replace

"Main Board" with a new one.

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Table 1-12. Check Points When More Than One Paper is Fed Constantly Without LED/STM3's Error Notifications

Occurrence Timing

Position of CR

At operation

Occurrence Timing

Position of CR

Phenomenon Detail

The printer always feeds more than one sheet of paper at a time without LED/ STM3's error notifications.

Phenomenon Detail

Makes abnormal sound in spite of the normal print operation at the first power on or some other time.

Faulty Part/

Part Name

1. Check if "Roller, Retard Assy." works correctly while feeding paper.

ASF Assy.

Check Point Remedy

Table 1-13. Check Points for Abnormal Sound

Faulty Part/

Part Name

Carriage Unit

Ink System

1. Check if there is enough grease on "CR Guide Shaft". 1. Wipe the remaining grease off on "CR Guide

1. Check if "Lever, Change" moves smoothly. 1. Replace "Ink System" with a new one.

Check Point Remedy

1. Reassemble "Extension Spring, 0.45" on the back of "Roller, Retard Assy."

Extension Spring,

0.45

Shaft" and then lubricate it.

Any time

Anywhere

The bottom of "Carriage Unit" touches the surface of "Front Frame".

"Carriage Unit" strikes on "Paper Guide, Upper" while "Carriage Unit" is working.

TROUBLESHOOTING Unit Level Troubleshooting 25

Frame EJ Assy.

Paper Guide,

Upper

1. Check if "Frame EJ Assy." is not warping upward. 1. Replace "Frame EJ Assy." with a new one.

1. Check if "Paper Guide, Upper" has come off from "Main Frame".

1. Reassemble "Paper Guide, Upper" to "Main Frame".

EPSON Stylus Photo R320 Revision B

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Table 1-14. Check Points for Defective Print Quality

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

[Phenomenon 1] When the printer is performing the Cleaning task, the ink is not drained into "Waste Ink Pad" in spite of the correct function of "Pump Unit". The ink from "Print Head" is not absorbed in the Cap at all.

[Phenomenon 2]

When the printer is performing the Cleaning task, the ink is drained into "Waste Ink Pad". (This indicates that both of "Pump Unit" and "Cap Unit" are working correctly.) However, missing dots is not solved at certain nozzles even performing the Cleaning several times.

[Phenomenon 3] When the printer is performing the Cleaning task, the ink is drained into "Waste Ink Pad". (This indicates that both of "Pump Unit" and "Cap Unit" work correctly.) However, the wiping function is not executed correctly and irregular colors appear on the printed sheet.

Faulty Part/

Part Name

Ink System

Check Point Remedy

1. Check if there is any foreign matter on the sealing rubber on "Cap Unit".

Sealing rubber

2. Check if the sealing rubber on "Cap Unit" is damaged.

3. Check if "Compression Spring, 2.53" is properly attached in "Cap Unit".

Compression

Spring, 2.53

4. Check if "Pump Tube" is properly connected to the bottom of "Cap Unit".

Contact point of

Pump Tube

1. Remove the foreign matter from the sealing rubber.

2. Replace "Ink System" with a new one.

3. Replace "Ink System" with a new one.

4. Replace "Ink System" with a new one.

[Phenomenon 4] When the printer is performing the Cleaning task, the ink is drained into "Waste Ink Pad". However, some missing dots occurs while printing.

[Phenomenon 5] When the printer is performing the Cleaning task, the ink is drained into "Waste Ink Pad". However, missing dot occurs and the place where it occurs varies in every movement of the Cleaning.

TROUBLESHOOTING Unit Level Troubleshooting 26

5. Check if "Extension Spring, 0.788" has come off from "Slider Cap".

6. Check if "Extension Spring, 0.441" has come off from "Slider Lock Lever".

Extension Spring, 0.441

Extension Spring, 0.788

5. Reassemble "Extension Spring, 0.788" correctly.

6. Reassemble "Extension Spring, 0.441" correctly.

EPSON Stylus Photo R320 Revision B

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Table 1-14. Check Points for Defective Print Quality

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

[Phenomenon 6] When the Cleaning is performed, the ink is drained into "Waste Ink Pad". However, missing dots and misalignment occur at all nozzles. They are not solved by executing the Cleaning several times.

* If the problem is not solved,

replace "Main Board" with a new one.

Striped pattern appears in a direction perpendicular to "Carriage Unit" movement.

Direction of

CR movement

Faulty Part/

Part Name

Ink System

Ink Cartridge

Print Head

Carriage Unit

Check Point Remedy

7. Check if "Slider Lock Lever" is damaged. 7. Replace "Ink System" with a new one.

1. Check if ink still remains in Ink Cartridge 1. Replace the Ink Cartridge with a new one.

1. Check if there is any foreign matter on the nozzle surface of "Print Head".

2. Check if "Head FFC" is connected to CN7 and CN8 on "Main Board", or to the board on "Print Head".

3. Check if "Head FFC" is damaged.

4. Check if each segment prints correctly with the Nozzle Check Pattern.

1. Check if there is foreign matter on the surface of "CR Guide Shaft".

2. Check if there is damage on the surface of "CR Guide Shaft".

3. Check if there is enough grease on the surface of "CR Guide Shaft".

4. Check if "CR Guide Shaft" is properly connected to "Main Frame" with the fixing spring of "CR Guide Shaft".

1. Perform the wiping operation. Replace "Wiper" when "Wiper" is deformed or contaminated awfully.

2. Securely connect "Head FFC" to "Main Board" or the board on "Print Head".

3. Replace "Head FFC" with a new one.

4. Perform Head Cleaning and check the Nozzle Check Pattern.

* If the problem is not solved, replace "Print

Head" with a new one.

1. Remove the foreign matter on "CR Guide Shaft".

2. Replace "CR Guide Shaft" with a new one.

3. Wipe the surface of "CR Guide Shaft" with a dry soft cloth, and then apply G-63 to it. Refer to Section 4.1.3.

4. Reassemble "CR Guide Shaft" correctly.

(Note) If the problem is not solved, replace "CR Motor" with a new one.

TROUBLESHOOTING Unit Level Troubleshooting 27

EPSON Stylus Photo R320 Revision B

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Table 1-14. Check Points for Defective Print Quality

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

Striped pattern appears in a direction perpendicular to "Carriage Unit" movement.

Striped pattern appears in a direction horizontally to "Carriage Unit" movement.

Direction of

CR movement

(Note) If the problem is not solved, replace "PF Motor" with a new one.

Irregular lines appear in a direction horizontally to "Carriage Unit" movement.

Faulty Part/

Part Name

Frame EJ Assy.

Print Head

PF Roller

Printer Driver and

Special Paper

Print Head

Check Point Remedy

1. Check if the surface of "Frame EJ Assy." is precisely horizontal.

1. Check if "Print Head" prints correctly with the Nozzle Check Pattern.

1. Check if there is any foreign matter on the surface of "PF Roller".

2. Check if "PF Roller" is damaged.

3. Check if "Spur Gear, 37.242" is damaged or broken.

1. Check if appropriate paper is used in accordance with the Printer Driver settings.

1. Check if "Print Head" prints correctly with the Nozzle Check Pattern.

1. Check if "Porous pad" in front of "Paper Guide, Front" has not come off.

1. Replace "Frame EJ Assy." with a new one.

1. Perform the Head Cleaning, then check the Nozzle Check Pattern.

* If the problem is not solved, replace "Print

Head" with a new one.

1. Clean the surface of "PF Roller".

2. Replace "Printer Mechanism" with a new one.

3. Replace "Printer Mechanism" with a new one.

1. Use the appropriate type of paper in accordance with the Printer Driver.

1. Perform the Head Cleaning, then check the Nozzle Check Pattern.

* If the problem is not solved, replace "Print

Head" with a new one.

1. Reattach "Porous pad".

These lines appear when the print paths overlap each other.

TROUBLESHOOTING Unit Level Troubleshooting 28

Paper Guide, Front

EPSON Stylus Photo R320 Revision B

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Table 1-14. Check Points for Defective Print Quality

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

Traces of "Star Wheels" appear in a direction perpendicular to "Carriage Unit" movement.

Normal printing task is performed; however, the top margin is less than usual.

The print is light and thin.

Faulty Part/

Part Name

Frame EJ Assy.

Roller EJ Assy.

Holder, Shaft,

LD Roller

Printer Driver and

Special Paper

Print Head

Check Point Remedy

1. Check if "Star Wheels" have come off.

2. Check if the surface of "Frame EJ Assy." is mounted horizontally.

1. Check if "Roller EJ Assy." has come off from "Printer Mechanism".

1. Check if any paper dust has adhered to the surface of "LD Roller".

LD Roller

1. Check if appropriate paper is used in accordance with the Printer Driver settings.

1. Check if the correct Head ID has been input in EEPROM by using the Adjustment Program.

1. Reassemble "Star Wheels" correctly.

2. Replace "Frame EJ Assy." with a new one.

1. Reassemble "Roller EJ Assy." correctly.

1. Remove the dust by using a soft brush or soft cloth moistened with alcohol.

* If the problem is not solved, replace

"Holder, Shaft, LD Roller" with a new one.

1. Use the appropriate type of paper in accordance with the Printer Driver settings.

1. Input 15-digit ID code of the Head ID in EEPROM by using the Adjustment Program

TROUBLESHOOTING Unit Level Troubleshooting 29

EPSON Stylus Photo R320 Revision B

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Table 1-14. Check Points for Defective Print Quality

Occurrence Timing

Position of CR

At operation

Phenomenon Detail

The paper is stained with the ink.

The upper edge of the paper gets creased.

Faulty Part/

Part Name

Frame EJ Assy.

Paper Guide, Front

Roller EJ Assy.

Paper Guide,

Upper

PF Roller

Ink System

Print Head

ASF Assy.

Check Point Remedy

1. Check if there is any ink adhesion on "Frame EJ Assy.". 1. Clean the ink adhesion on "Frame EJ Assy." with a soft cloth.

1. Check if "Frame EJ Assy." has warped upward. 1. Replace "Frame EJ Assy." with a new one.

1. Check if there is any ink adhesion on "Paper Guide,

Front".

2. Check if "Porous pad" of "Paper Guide, Front" has come

off.

1. Check if there is any ink adhesion on "Roller EJ Assy.". 1. Clean the ink adhesion on "Roller EJ Assy."

1. Check if there is any ink adhesion on "Paper Guide,

Upper".

1. Check if there is any ink adhesion on "PF Roller". 1. Clean the ink adhesion on "PF Roller" with a

1. Check if the wiping operation has been performed

correctly.

1. Check if there is any ink adhesion on "Print Head Cover". 1. Clean the ink adhesion on "Print Head Cover"

1. Check if "Hopper Pad" is stuck to "Hopper" correctly. 1. Replace "ASF Assy." with a new one.

1. Clean the ink adhesion on "Paper Guide, Front" with a soft cloth.

2. Reattach "Porous pad".

with a soft cloth.

1. Clean the ink adhesion on "Paper Guide, Upper" with a soft cloth.

soft cloth.

1. Replace "Ink System" with a new one.

with a soft cloth.

TROUBLESHOOTING Unit Level Troubleshooting 30

DISASSEMBLY AND ASSEMBLY

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CHAPTER

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