Epson Stylus Photo r1800, Stylus Photo r2400 Service Manuals

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SERVICE MANUAL

Color Inkjet Printer

EPSON Stylus Photo R1800/R2400

SEIJ04015

Notice:

mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

 The contents of this manual are subject to change without notice.  All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly

appreciate being informed of them.

 The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof. EPSON is a registered trademark of SEIKO EPSON CORPORATION.

General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their

respective owners. EPSON disclaims any and all rights in those marks.

I&I CS/Quality Management & PL Department

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.

WARNING

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

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE

EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING

PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

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

STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFAC TURE; INTRODUCTION OF SECOND-SOURCE

ICs OR OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

About This Manual

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

Manual Configuration

This manual consists of six chapters and Appendix.

CHAPTER 1.PRODUCT DESCRIPTIONS

Provides a general overview and specifications of the product.

CHAPTER 2.OPERATING PRINCIPLES

Describes the theory of electrical and mechanical operations of the product.

CHAPTER 3.TROUBLESHOOTING

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

CHAPTER 4.DISASSEMBLY / ASSEMBLY

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

CHAPTER 5.ADJUSTMENT

Provides Epson-approved methods for adjustment.

CHAPTER 6.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:

• Connector pin assignments

• Exploded diagram & Parts List

• Electric circuit boards components layout

• 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.

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 th at is necess ary t o acco mplis h a t ask eff icie ntly . 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 Date of Issue Description

A January 21, 2005 First Release B March 31, 2005 Revised Contents

 8. Stylus Photo R2400 (p198)

• Stylus Photo specific information is added.

 5.2.5.1 Printing Calibration Chart by Users (p165)

• Descriptions of the procedure are added.

 5.2.5.2 Writing of Color ID by Users (p169)

• A caution is deleted.

 Color Correction Value Entry Procedure (p170)

• Supported OS and ports are added.

 Calibration Chart Print Procedure for Users (p166)

• Descriptions of the procedure are added.

EPSON Stylus Photo R1800/R2400 Revision B

CONTENTS

Chapter 1 Product Description

1.1 Overview.................................................................................................. 9

1.2 PG Setting ............................................................................................. 10

1.3 Functions .............................................................................................. 11

1.3.1 Control Panel ................................................................................ 11

1.3.2 Switches .................... ....... ...... ....... ...... ....... ...... ....... ...... ....... ......... 11

1.3.3 Indicators ................... ....... ...... ....... ...... ....... ...... ....... ...... ....... ...... ... 11

1.3.4 Switch Functions ........................................................... ....... ......... 11

1.3.5 Indicator Display in Normal Mode ................................................. 12

1.3.6 Error Status ................................................................................... 13

1.4 Casing Specifications .......................................................................... 14

1.5 Accessories .......................................................................................... 14

Chapter 2 Operating Principles

2.1 Overview................................................................................................ 16

2.2 Printer Mechanism ............................................................................... 16

2.2.1 Carriage Mechanism ..................................................... ....... ...... ... 17

2.2.2 Printhead Specificatio ns ... ...... ....... ...... ....... ...... ............................. 20

2.2.3 Paper Feeding Mechanism ................. ....... ...... ....... ...... ....... ...... ... 20

2.2.4 Paper Feeding Mechanism ................. ....... ...... ....... ...... ....... ...... ... 25

2.2.5 Ink System Mechanism ................................................................. 26

2.2.6 Ink Sequence ................................................................................ 28

2.2.7 Power-On Sequence ..................................................................... 30

2.3 Electrical Circuit Operating Principles............................................... 31

2.3.1 Power Supply Circuit Operating Principle ..................................... 32

2.3.2 C589 MAIN Circuit Operating Principle ......................................... 33

Chapter 4 Disassembly And Assembly

4.1 Overview ............................................................................................... 69

4.1.1 Precautions ................................................................................... 69

4.1.2 Tools ............................................................................................. 70

4.1.3 Screws .......................................................................................... 71

4.1.4 Work Completion Checklist ........................................................... 72

4.2 Disassembly ......................................................................................... 73

4.2.1 Removing the Housings ................................................................ 74

4.2.2 Waste Ink Pad ............................................................................... 80

4.2.3 Front Paper Guide Pad ................................................................. 82

4.2.4 ASF Assy ...................................................................................... 83

4.2.5 Removing the Boards ................................................................... 87

4.2.6 Disassembling the Printer Mechanism .......................................... 89

4.2.7 Removing the Motors .................................................................. 122

4.2.8 Removing the Sensors ................................................................ 124

Chapter 5 Adjustment

5.1 Adjustment Items and Overview....................................................... 129

5.1.1 Servicing Adjustment Item List .................................................... 129

5.1.2 Replacement Part-Based Adjustment Priorities .......................... 133

5.1.3 Required Adjustment Tools ......................................................... 136

5.2 Adjustment.......................................................................................... 137

5.2.1 PF Belt Tension Adjustment ....................................................... 137

5.2.2 PG Adjustment ............................................................................ 139

5.2.3 PF Roller Shaft Center Support Position Adjustment ................. 143

5.2.4 Colorimetric Calibration ............................................................... 147

5.2.5 Colorimetric Calibration by Users ............................................... 165

Chapter 3 Troubleshooting

3.1 Overview................................................................................................ 36

3.1.1 Troubleshooting according to Panel Messages ............................ 36

3.1.2 Troubleshooting based on Observed Faul ts ........................ ...... ... 59

Chapter 6 Maintenance

6.1 Overview ............................................................................................. 173

6.1.1 ROM Replacement ..................................................................... 173

6.1.2 Cleaning ...................................................................................... 173

6.1.3 Service Maintenance .................................................................. 174

EPSON Stylus Photo R1800/R2400 Revision B

6.1.4 Lubrication ................................................................................... 175

Chapter 7 Appendix

7.1 Connector Summary .......................................................................... 182

7.1.1 Connectors and Pin Layouts ....................................................... 182

7.2 Exploded Diagram.............................................................................. 183

7.3 Parts List for EPSON Stylus Photo R1800 ....................................... 190

7.4 Circuit Diagram................................................................................... 192

Chapter 8 Stylus Photo R2400

8.1 Overview.............................................................................................. 199

8.1.1 Overview ............. ....................................... ...... ....... ...... ....... ...... . 199

8.1.2 Indicator Display in Normal Mode ............................................... 200

8.1.3 Error Status ................................................................................. 201

8.2 Casing Specifications ........................................................................ 202

8.3 Accessories ........................................................................................ 202

8.3.1 Printhead Specificatio ns ... ...... ....... ...... ....... ...... ........................... 203

8.3.2 Ink Sequence .............................................................................. 203

8.4 Overview.............................................................................................. 204

8.4.1 Troubleshooting according to Panel Messages .......................... 204

8.5 Parts List for EPSON Stylus Photo R2400 ....................................... 227

PRODUCT DESCRIPTION

CHAPTER

EPSON Stylus Photo R1800/R2400 Revision B

1.1 Overview

The Stylus Photo R1800 is a photo printer designed for a wide range of users from individual users to commercial users. As a successor to the Stylus Photo 2100/2200, this consumer middle high model is capable of CD-R/DVD-R printing and roll paper cutter functions. This product has the following features.

FEATURES

 High color print quality

 5760 (H) x 1440 (V) dpi printing (Max resolution)  8 color printing

(PPI Black, Photo Black, Cyan, Magenta, Yellow, Red, Violet, Clear)

 Pigment Ink supported  Separate Ink Cartridge for each color  Built-in 2 I/F

 USB 2.0 (HS compatibility)

 IEEE 1394

Figure 1-1. Product Appearance

 Windows/Macintosh exclusive  Roll Paper Support  Printable area expand (Bottom margin reduce)  Card printing support  CD-R printing support

Product Description Overview 9

EPSON Stylus Photo R1800/R2400 Revision B

1.2 PG Setting

As this printer uses an Auto PG (APG), an appropriate PG position is set according to the used paper type. The following table indicates the PG positions, the main applications of each position, and the relationships between the two sensors used with the APG.

Table 1-1.

Application

Printing • PGPP

•A3

•A4

Non-printing

PG value 1.15mm 1.3mm 1.7mm 2.1mm 4.5mm –

Sensor PG (– –) PG (–) PG (Typ) PG (+) PG (++) Release

APG Sensor 1 OFF OFF OFF OFF OFF OFF APG Sensor 2 ON ON ON ON OFF OFF

PG (– –) PG (–) PG (Typ) PG (+) PG (++) Release

• Exclusive paper • Plain paper

• Photo Album paper

• Photo Matte paper A3 fine

• PG (-) rub avoidance

• Standby position after power-on (For bottom stacker)

– –

• At power-off

• The Ink Mark Sensor operates. (Auto Bi-D, Detection of dot missing)

PG Position

• Envelope

• PG (Typ) rub avoidance

• CD-R

• Photo stand paper –

• Initialization at power-

• Cleaning (wiping)

–

• Replace the Ink

Cartridge

• Waiting for CD-R/ Board paper to be fed

• Paper jam removal

Product Description PG Setting 10

EPSON Stylus Photo R1800/R2400 Revision B

1.3 Functions

1.3.1 Control Panel

The appearance of the control panel is shown below.

Paper LED

Ink LED

Power LED

Figure 1-2. Control Panel Appearance

1.3.2 Switches

 Power switch

Paper switch

Ink switch

Roll paper switch

Power switch

1.3.4 Switch Functions

FUNCTIONS IN NORMAL STATUS

Table 1-2. Normal-status Functions

Switch Function

Power switch

Paper switch

Ink switch

Roll paper switch

• Power On / Off.

• Panel reset (off and on within 10 seconds).

• Loads or Ejects the P aper.

• When carriage is on the Ink Cartridge change position, return carriage from Ink Cartridge change position.

• In the condition of printing, cancel the print job.

• Starts the Cleaning of head with 3 second pushing.

• Moves the carriage to cartridge change position.

• When carriage is on the ink c hange p ositio n, return c arriage from Ink Cartridge change position.

• Loads the Roll paper.

• Back out the roll paper with 3 second pushing.

• Move to tear off position / Return from tear off position.

• When cartridge is on the Ink Cartridge change position, return carriage from Ink Cartridge change position.

• When the photo album is used, ejects the paper forwards only. (At this mode, the printer can’t move backwards without Top of Form.)

 Paper switch  Ink switch  Roll paper switch

1.3.3 Indicators

 Power LED : Green

FUNCTION AT POWER-ON

Table 1-3. Power-on Function

Switch Function

Paper switch Starts stat us printings.

Note "*1": Status printings prints firmware version, ink counter and nozzle check

patterns.

 Paper LED : Red  Ink LED : Red

Product Description Functions 11

EPSON Stylus Photo R1800/R2400 Revision B

1.3.5 Indicator Display in Normal Mode

Table 1-4. Printer Condition and LED Status

Printer status Error status

Idle – On – – 20 Data processing – Blink – – 19

Pause Ink sequence processing – Blink – – 17 Ink cartridge change mode – Blink – – 16 Ink low (warning) – – – Blink 15 Tear off status 11h – – – 14 Paper mismatch Error 0Ch – Fast Blink – 12 Paper Out 06h – On – 11 Ink end 05h – – On 10 No Ink cartridge or

Ink cartridge error Paper Jam Error 04h – Blink – 8 Card loading error 2Ah – Blink 2 – 7 Cover Open Tray Error 2Bh – Fast Blink Blink 2 13 Reset input – On On On – Fatal error 00h Off Fast Blink Fast Blink 4

Maintenance request 10h Off Power off – Fast Blink Off Off 1

Note: • "–" : Don't care

• Blink : 0.5sec on + 0.5sec off repetition

• Blink 2 : 0.2sec on + 0.2sec + 0.2sec on + 0.4sec off repetition

• Fast Blink : 0.1sec on + 0.1sec off repetit ion

• Blink alternately 1 : 0.5sec on + 0.5sec off repetition

• Blink alternately 2 : 0.5sec off + 0.5sec on repetition

Status 05h – – – 18

05h

Power Paper Ink Priority

––On9

Indicators

Blink

alternately 1

Blink

alternately 2

Note"*1": When the Photo album paper is end, the printer goes to this status.

Product Description Functions 12

EPSON Stylus Photo R1800/R2400 Revision B

1.3.6 Error Status

If any of the following states is detected, this printer is put in an error status and turns the interface signal -ERROR "Low" and BUSY "High" to inhibit data input. At this time, the printer is automatically disabled from printing. However, when communication is being made using the IEEE1284.4 protocol, communication with the printer is enabled.

 General error

After the cause of this type of error is removed, the printer can resume its operation from where it stopped due to the error

Table 1-5. General error

Error Status Occurring Condition Resuming Condition

Cover open (tray) error

Paper mismatch error

Paper out When printer fails to load a sheet, it

Ink out When the printer runs out the most

No ink-cartridge When printer detects that ink-

When the front cover is opened at ASF, roll paper or photo album printing mode, the printer goes this error.

If the paper path specified by the print data is different from the printer’s real paper path, the printer goes to this error.

goes paper out error.

part of the ink of any one color, it warns ink-low and keeps printing. When the printer runs out the whole ink of any one color, it stops printing and indicates ink-out error.

cartridge comes off, it goes this error mode.

Close the front cover.

Change the printer’s paper path to the one specified by the data.

Set the paper to the ASF and push the Paper switch.

Install the new Ink Cartridge.

Table 1-5. General error

Error Status Occurring Condition Resuming Condition

Paper jam • Failure of ejecting a sheet

• Failure of loading a sheet to the loading position

Card loading error When the card was loaded to the

wrong position, the printer goes this error.

Remove the jammed paper.

Set an A4 paper to the ASF, and press the paper switch. If the card couldn’t eject at your first try, repeat again the same method.

 Fatal error

After the cause of this type of error is removed, the printer cannot return to normal unless it is powered off and then on again

Table 1-6. Fatal error

Error Status Occurring Condition Resuming Condition

Maintenance request

Fatal errors • CR motor control error

When the total quantity of ink wast ed through the cleanings and flushing is reaches to the limit, printer indicates this error and stops.

• PF motor control error

• ASF motor control error

• Auto Platen Gap control error

• Head temperature error

• PW sensor error

Replace the absorber in the printer enclosure by a service person.

Turn off and turn on.

Product Description Functions 13

EPSON Stylus Photo R1800/R2400 Revision B

1.4 Casing Specifications

EXTERNAL DIMENSIONS

When tucked : 615 (width) x 314 (depth) x 219 mm (height) When used : 615 (width) x 453 (depth) x 737 mm (height)

WEIGHT

11.7 kg (without the Ink Cartridges, Roll paper holder and CD-Tray)

EXTERNAL DIMENSION DIAGRAM

737

219

314

453

615

1.5 Accessories

STANDARD ACCESSORIES

 User’s guide  Ink Cartridge (one for each of 8 colors)  Setup Sheet  Power Cord  Software CD-ROM  CD-R Print Position Check sheet  Roll Paper Holder  8-cm CD/DVD adapter  CD/DVD tray

CONSUMABLES AND OPTIONS

 Ink Cartridges

 Gloss Optimizer : T0540  Black : T0541  Cyan : T0542  Magenta : T0543  Yellow : T0544  Red : T0547  Matte Black : T0548  Blue : T0549

 802.11g Radio printing adapter : PA-W11G

Figure 1-3. External Dimension Diagram

Product Description Casing Specifications 14

OPERATING PRINCIPLES

CHAPTER

EPSON Stylus Photo R1800/R2400 Revision B

2.1 Overview

This chapter explains the operating principles of the mechanical sections and electrical circuits in this product. The main components of this product are as follows.

 Control circuit board : C589 MAIN  Power supply circuit board : C589 PSB  Control panel board : C589 PNL  Control panel B board : C589 PNL-B

2.2 Printer Mechanism

Like the conventional model, this product uses DC motors and stepping motors as power sources. The following table describes the motor types and their applications.

Table 2-1. Motors

Motor Name Type Applications/Functions

Used for carriage driving. Makes little noise during driving. The CR linear scale and CR encoder sensor are used to control the motor.

Drives the Paper loading rollers at the time of fixed-value paper loading or paper feed/eject operation. To grasp the paper feed pitch, the precision gear surface is fitt ed with th e PF sc ale and the PF encoder sensor is used to control the motor.

Drives the Carriage Unit at the time of PG setting. The two APG Sensors and Carriage Shaft are driven vertically to control the motor.

Drives the paper feed operation of the ASF. Since this is a stepping motor, any scales or photo sensors to know the driv ing conditions are not required.

Drives the pump, wiper, etc. of the Ink System. Since this is a stepping motor, any scales or photo sensors to know the driv ing conditions are not required.

CR Motor

PF Motor

APG Motor

ASF Motor

Pump Motor

DC motor with

brushes

DC motor with

brushes

DC motor with

brushes

4-phase, 48-pole

PM type

stepping motor

4-phase, 48-pole

PM type

stepping motor

The basic mechanism is almost same as the Stylus Photo R800. The most major difference is that this Stylus Photo R1800 is equipped with a dedicated sensor to detect a open or close status of the Front Cover. This prevents the Print Head from damaging by mistake. The schematic diagram below sho ws the pri nte r mecha nis m.

PF Encoder

Sensor

Front Paper Eject Roller

Rear Paper

Eject Roller

PF Roller

CR Scale

PW Sensor

Ink Mark

Sensor

Carriage

Unit

Ink System

Unit

Pump Motor

CD-R Sensor

Carriage

Shaft

PF Scale

PF Motor

APG Sensors

APG Motor

APF Sensor

Timing Belt

CR Encoder

Sensor

LD Roller

Retard

Roller

PE Sensor

ASF Motor

CR Motor

Figure 2-1. Printer Mechanism Outline

Operating Principles Overview 16

EPSON Stylus Photo R1800/R2400 Revision B

2.2.1 Carriage Mechanism

The Carriage mechanism consists of the Carriage Motor (CR Motor), Carriage Shafts, Platen Gap Adjustment Mechanism, Carriage Lock Mechanism, and others.

2.2.1.1 Carriage Mechanism

The following indicates the specifications of the CR motor (DC motor) that drives the Carriage.

Table 2-2. CR Motor Specifications

Item Specifications

Type DC motor with brushes Drive voltage +42V ± 5% (voltage applied to driver) Armature resistance 29.2Ω ± 10% Inductance 30.0mH ± 25% Drive method PWM, constant-current chopping Drive IC A6628

Closed loop control based on the CR Motor (DC Motor) and CR Encoder Sensor has advantages in stabilized print quality and silent operation.

 Heat Generation Control

The printer has a machanism to reduce the variations in the torque constant and coil resistance of the DC motors, and variations in output voltage of the Power Supply Board to obtain a designated heating value.

 CR Variation Measurement Sequence

The variations mentioned above are measured in a CR variation measurement sequence when the CR mechanical load is in the initial status and saved into the EEPROM (A6<H>). According to the saved information, the printer controls the drive voltage to obtain a designated driving current. This minimizes the unit-to-unit variation.

 CR Measurement Sequence

To set the appropriate drive current value according to the CR mechanical load, the mechanical load is measured in a CR measurement sequence and saved into the EEPROM A4<H>, A5<H> at power-on or after replacement of the Ink Cartridge (s). However, if 6E is saved at the EEPROM A4<H> and 05 at A5<H>, Fatal error will occur since too large load is applied to the CR drive system.

The above control and sequences correct the drive current value of the CR Motor according to not only the mechanical load but also the variations of the motor and like. In addition, the resultant CR drive current value is used to calculate a heating value, and when the specified heating value is reached, wait time is provided per CR path for printing.

Operating Principles Printer Mechanism 17

EPSON Stylus Photo R1800/R2400 Revision B

2.2.1.2 Carriage Home Position Detection

As in the conventional model, the Carriage Home Position is detected using the drive current of the CR Motor and the speed/position signal of the CR Linear Encoder. The basic home position detection sequence is as described below.

1. The CR linear encoder pulse counter in the CPU is reset by the initialization operation performed at power-on.

2. When the CR Motor rotates counterclockwise, the Carriage Unit moves from left to right. When the following conditions are satisfied, the CPU assumes that the Carriage Unit made contact with the right frame.

 The ASIC detects 1158/1500 counts or more in the PWM output under

CR Motor load positioning control.

 P1 (number of output pulses from when power is switched on until the

Carriage Unit makes contact with the right frame) is 19 steps or less.

3. When the CR Motor rotates clockwise, the Carriage Unit moves from right to left. When the following conditions are satisfied, the CPU assumes that the Carriage Unit reached the CR lock confirmation position.

 The ASIC detects 575/1500 counts or more in the PWM output under

CR Motor load positioning control.

 A difference between P1 and P2 (number of output pulses from when

the Carriage Unit made contact with the right frame until it reaches the Carriage lo ck confirmation position) is 19 steps or less.

4. When the CR Motor rotates counterclockwise to move the Carriage from left to right and the CPU detects 1158/1500 counts or more in the PWM output under CR Motor load positioning control, the printer judges that the Carriage moved to the far right position (is in contact with the right frame ).

5. When a difference between P1 and P3 (number of output pulses from when the Carriage Unit reached the Carriage lock confirmation position until it makes contact with the right frame) is 4 steps or less, the printer judges that the Carriage Unit is in the home position.

The IC14 (ASIC) sets the drive current value adequate for the Carriage Unit motion and outputs it to the motor driver.

Based on the signal output from the IC14 (ASIC), the IC5 (Motor Driver) outputs the CR Motor drive current to the CR Motor.

2.2.1.3 Sequen ce Used for PW Detection

The PW (paper width detection) Sensor installed on the Carriage Unit bottom is used to control the printer according to various sequences.

The following briefly describes the PW Sensor operating principle. A dark voltage is measured by the PW Sensor in three places at the right flat

area (area without the absorber) on the Front Paper Guide every time the printer is turned on, and the measurement values are saved into the EEPROM as threshold values.

 Threshold value detection voltage: Paper present  Threshold value detection voltage: Paper absent

The following sequences are performed.

 Detection of Left and Right Edges of Paper and Control

 Before Printing

The printer detects that paper has been loaded. And it sets the print range according to the paper-size information from the Driver and the actual paper-size detected by the PW sensor.

 During Printing

When executing a borderless printing, the printer sets the off-range margins by detecting the paper edges with the PW Sensor. And when the resolution is 1440 x 1440 (VSD3) or 2880 x 1440 (VSD3) dpi, the printer performs the Off-Range Thinning Out Control to make a further correction to the off-range margins.

 Detection of Top Edge of Paper and Control

Before starting a print job, the printer detects the top edge of a loaded single sheet of paper, roll paper, or board paper to set the off-range top margin. (Only when not detecting the top edge of paper with the PW Sensor.)

 Detection of Bottom Edge of Paper and Control

After starting a borderless printing, the printer sets the off-range bottom margin.

 Detection of Edges of CD-R and Control

Before starting to print, the PW Sensor detects top, bottom, left and right edges of the CD-R. See Section 2.2.3.4 CD-R Printing Mechanism on

page 24.

Operating Principles Printer Mechanism 18

EPSON Stylus Photo R1800/R2400 Revision B

 PW sensor dark voltage (VH) measurement

PW sensor dark voltage (VH) measurement is performed at the following timings and locations and used to calculate the threshold value of whether paper is present or not.

 Cut sheets, Roll paper

The dark voltage is measured and updated at every power-on, and the threshold value (VS) is calculated and saved in the EPROM area as a PW detection level.

• Threshold value detection voltage: Paper present

• Threshold value detection voltage: Paper absent

 CD-R Tray

When printing on a CD-R, the dark voltage is measured on the CD-R tray, and the threshold value (VS) is then calculated and saved in the EPROM area as a PW detection level.

• Threshold value detection voltage: CD-R present

(tray home position detected)

The measurement voltage in the presence of the CD-R is saved into the EEPROM as a white level. The white level value is used to check the sensor deterioration condition during servicing or like.

• If the measurement value of the white level is close to that of the PW detection level, it means that the sensor is dirty or deteriorated.

2.2.1.4 APG (Auto PG) Mechanism

The following indicates the specification of the DC motor that drives the APG.

Table 2-3. APG Motor Specifications

Item Specifications

Type DC motor with brushes Drive voltage +42V ± 5% (voltage applied to driver) Armature resistance 64.7Ω ± 15% Inductance 37.6mH ± 25% Drive method PWM, constant-current chopping Drive IC A6628

The APG Motor (DC Motor) and two APG Sensors drive the PG Cam to automatically adjust the PG amount according to the paper.

APG

Sensor

Carriage Shaft Carriage Unit

PG CamAPG Sensor

APG Motor

Figure 2-2. APG Mechanism

Operating Principles Printer Mechanism 19

EPSON Stylus Photo R1800/R2400 Revision B

2.2.2 Printhead Specifications

The Printhead of this product is a F-Mach head. The following shows the arrangement of the nozzles and the color arrangement of each nozzle line when viewed the Print Head from behind.

0.071mm

(1/360inch)

7.620mm

(216/720inch)

2.258mm

(64/720inch)

Line A

(64/720inch)

Line C

Line B

Carriage moving direction

Figure 2-3. Nozzle Arrangement

7.620mm

(216/720inch)

2.258mm

Line D

31.89mm

41.66mm

2.258mm

(64/720inch)

Line E

7.620mm

(216/720inch)

Line F

2.258mm

(64/720inch)

LineG

Paper feeding

direction

Line H

0.141mm

(1/180inch)

2.2.3 Paper Feeding Mechanism

The paper feeding mechanism is a mechanism that feeds paper or CD-R Tray to the PF Roller Shaft.

CD-R Tray

Star Wheel Rollers

Board paper

Front Paper Eject Roller

Figure 2-4. Paper Feeding Mechanism

PE Sensor

Rear Paper Eject Roller

Cut sheet

PF Roller

Roll paper

Table 2-4. Nozzle Lines and the Corresponding Ink Color

Line Ink

AYellow B Magenta CCyan D Matte-black E Photo-black

F Red GBlue H Gloss Optimize r

Operating Principles Printer Mechanism 20

EPSON Stylus Photo R1800/R2400 Revision B

2.2.3.1 ASF Paper Feeding Mechanism

The following shows the specifications of the stepping motor that drives the ASF Assy.

Table 2-5. ASF Motor Specifications

Item Specifications

Type 4-phase, 48-pole PM type stepping motor Drive voltage +42V ± 5% (voltage applied to driver) Winding resistance 7.0Ω ± 10% (per phase at 25°C) Inductance 10.2mH ± 20% (1kH, 1Vrms, 25Åé) Drive method Bipolar drive/constant-current drive Drive IC A6628

Driven by the ASF Motor, the ASF Assy performs the following feeding operation.

1. When a paper feeding command is issued from the PC or the Paper Switch of the panel is pressed after power-on, the driving force of the ASF Motor begins to be transmitted to the LD Roller following the route shown below.

ASF Motor

Combination Gear 29, 11

4. When the next sheet of paper is fed by the LD Roller and the Retard Roller, the Hopper is pressed against the Frame again by the Hopper Cams. And the Paper Holder of the Paper Back Lever rises by the Cams at the left and right ends of the LD Roller to prevent the next sheet from being fed with the previous sheet.

5. The LD Roller stops to rotate when it makes one revolution and the Flag of the ASF Sensor Wheel returns to the ASF Sensor.

LD Shaft Spur Gear

LD Roller

2. When the LD Roller starts rotating, the Flag of the ASF Sensor Wheel comes free from the notch on the ASF Sensor. And at the same time, the Paper Back Lever becomes free from the Cams located at the left and right ends of the LD Roller, then the Paper Holder on the Paper Back Lever inclines downward by tensile force of the Paper Back Lever Torsion Spring.

3. By the LD Roller's rotation, the Hopper is released from the Hopper Cams located at the left and right ends of the LD Roller, and the Hopper pops up by tensile force of the Hopper Compression Spring.

Operating Principles Printer Mechanism 21

EPSON Stylus Photo R1800/R2400 Revision B

2.2.3.2 Roll Paper Feeding

Relay Board

Sensor

Roller

Cam

ASF

ASF Sensor

Wheel

Hopper

LD Roller

Paper

Hopper

Compression

Spring

ASF Motor

LD Shaft

Spur Gear

Combination

Gear 29.11

When selecting the Roll Paper Mode, the contol Panel switches function in different ways from when printing other than roll paper. This section describes the deifference.

1. The roll peper is fed into the printer after a lapse of three seconds from when the PE sensor detects the paper.

2. The roll paper is fed backward to be set at the print position.

While the printer is performing the above operation, the switches are disabled. After the roll peper is set to the print position, the switches operation becomes defferent from when printing other than roll paper.

The details of the difference are described below.  When Loading Roll Paper.

Pressing the Roll Paper Switch for more than 3 seconds feeds the leading edge of the roll paper backward to the PE Sensor (the Paper LED flashes). In this state, draw the roll paper and press the Paper Switch to return the panel operation to the normal mode that enables paper feeding from the ASF.

 When Received a Print Job for Roll Paper

1. After finished the print job, press the Roll Paper Switch.

2. A cutoff line is printed, and the roll paper is fed to the roll paper cut position.

3. After cutting the roll paper with a pair of scissors or like, press the Roll Paper Switch again. This returns the leading edge of the paper to the print starting position.

Retard

Roller

Standby State Feeding Paper

Paper Back Lever

Torsion Spring

Paper Back Lever

Figure 2-5. ASF Paper Feeding Mechanism

Operating Principles Printer Mechanism 22

EPSON Stylus Photo R1800/R2400 Revision B

2.2.3.3 CD-R Tray Base Lock Mechanism

To prevent the Print Head from being damaged by mistake, the printer is designed to lock the CD-R Tray Base when the Carriage Unit is out of its home position.

The following explains the lock mechanism of the CD-R Tray Base.  Lock Release Sequence

1. When the Carriage Unit returns to its home position, the Pump Motor drive is transmitted to the Paper EJ Lock Release Cam.

2. The salient of the Cam presses down the Paper EJ Transmission Lock Lever to release the tab of the Paper EJ Lock Lever from the Paper EJ Transmission Lock Lever.

3. The CD-R Release Lever comes free from the Paper EJ Lock Lever and comes down to enable the CD-R Tray Base to open.

When the Carriage Unit is out of its home position, the salient of the Paper EJ Lock Release Cam does not press down the Paper EJ Transmission Lock Lever, and the tab of the Paper EJ Lock Lever is not released. Therefore, the CD-R Tray Base cannot be opened.

CD-R Tray Base

Paper EJ Lock Lever

Paper EJ Transmission Lock Lever

Paper EJ Lock Release Cam

CD-R Release Lever

Jointed positionTab

Salient

Figure 2-6. CD-R Tray Base Lock Mechanism

Operating Principles Printer Mechanism 23

EPSON Stylus Photo R1800/R2400 Revision B

2.2.3.4 CD-R Printing Mechanism

 CD-R Tray Home Position Detection Sequence

The following sequence is performed after opening the Front Cover (CD-R Sensor closing), inserting the CD-R Tray to the specified position, and pressing the Paper SW.

When the close signal of the CD-R Sensor is detected, no paper is fed from the ASF if the Paper Switch is pressed. In this case, the Paper Switch executes a CD-R Tray home position detection sequence.

1. When the APG Assy is driven, the PG position is set to "++" and the Driven Roller of the Upper Paper Guide presses the CD-R Tray.

2. When the Carriage Unit moves leftward and the PW Sensor detects the CD-R, the Carriage Unit returns to its home position (HP).

3. After waiting for about 5 seconds at the HP, the Carriage Unit moves to the CD-R Tray HP detectable position (right end of the CD-R Tray).

4. The CD-R Tray is pulled in the ASF direction, the PW Sensor detects the CD-R Tray HP, and then the Carriage Unit moves to the center of the CD-R Tray.

5. When the PW Sensor detects the white marking in the center of the CD-R Tray, the CD-R Tray is fed in the paper ejection direction.

6. The Carriage Unit moves leftward, the PW Sensor detects the left side white marking, then the Carriage Unit moves rightward, and the PW Sensor detects the right side white marking.

7. The Carriage Unit moves to the center of the CD-R Tray, and the PW Sensor starts detection in the back-and-forth direction of the CD-R. After the leading edge of the CD-R is detected, the CD-R Tray is fed in the paper ejection direction, and the trailing edge of the CD-R is detected. After that, the CD-R Tray is fed to the center of the CD-R in the paper ejection direction.

8. The Carriage Unit moves leftward, and the PW Sensor starts detection in the horizontal direction of the CD-R. After the left end of the CD-R is detected, the Carriage Unit moves rightward, and the right end of the CD-R is detected.

9. The Carriage Unit moves to the CD-R Tray HP detectable position and stops there, and then the CD-R Tray is fed in the ASF direction.

10. When the CD-R Tray stops operating, the Carriage Unit moves to the carriage HP and stands by.

If the CD-R Tray HP, white marking or CD-R cannot be detected within the steps predetermined for the CD-R Tray HP detection sequence, the CD-R Tray is ejected and Paper Out Error is displayed.

PW Sensor

CD-R Tray

Carriage Unit

CD-R home position

Figure 2-7. CD-R Printing Mechanism

Operating Principles Printer Mechanism 24

EPSON Stylus Photo R1800/R2400 Revision B

2.2.4 Paper Feeding Mechanism

The Paper Feeding Mechanism is designed to transfer the paper fed from the ASF, Roll Paper Guide or Board Paper Guide or the CD-R fed from the CD-R Tray according to the print data.

2.2.4.1 Paper Feeding Mechanism

The following shows the specifications of the DC motor that drives the Paper Feeding Mechanism.

Table 2-6. PF Motor Specifications

Item Specifications

Type DC motor with brushes Drive voltage +42V ± 5% (voltage applied to driver) Armature resistance 21.2Ω ± 10% Inductance 17.2mH (1kHz) Drive method PWM Drive IC A6628

Like the CR Motor, a DC motor is used as the PF Motor in this product. Closed loop control based on the DC Motor and Rotary Encoder has the

following advantages.

 Improved paper feed accuracy  Paper feed amount control

PF Motor

PF Timing Belt

Combination Gear

36.294, 45.5

PF Roller

Spur Gear 31.5

Spur Gear 68

Front Paper Ejec t Roller

Spur Gear 16; B (front)

Spur Gear 15.5

Spur Gear 16; B (rear)

Rear Paper Eject Roller

The following shows the part names and outline of the drive transmission path.

Combination Gear

36.294, 45.5

PF Timing Belt

PF Motor

Spur Gear 16; B (rear)

Spur Gear 68 Front Paper

Eject Roller

Spur Gear 15.5

Spur Gear 31.5

The PF Motor drive is transmitted to the PF Roller and the Paper EJ Roller following the route shown below. The route is also followed by the paper.

PF Roller

Front Paper Eject Roller

Front Paper Guide

Rear Paper Eject Roller

Figure 2-8. Paper Feeding Mechanism

Operating Principles Printer Mechanism 25

EPSON Stylus Photo R1800/R2400 Revision B

The fed paper is detected by the PE Sensor, and its leading edge is then transferred to the front of the Front Paper Guide. To eliminate the deflection of the paper, the paper is then returned toward the ASF Assy by the specified number of steps according to the paper feed mode. The paper is transferred again to the specified paper locating position of the Front Paper Guide.

2.2.4.2 PF Measurement Sequence

 The mechanical load in the paper feeding path is measured in the following

cases to perform control so that an adequate current value is set according to the mechanical load.

 When power is switched on  When the Ink Cartridge is replaced

 When the mechanical load in the paper feeding path reaches the specified

value, a Fatal Error is displayed.

2.2.5 Ink System Mechanism

The Ink System Mechanism consists of the following units.

 Pump Unit (including the CR Lock Lever)  Cap Unit

2.2.5.1 Pump Unit

The Pump Unit is designed to suck ink from the Print Head or Cap Unit. The Cap Unit has a built-in Head Cleaning Wiper. The following shows the specifications of the stepping motor that drives Pump Unit.

Table 2-7. Pump Motor Specifications

Item Specifications

Type 4-phase, 48-pole PM type stepping motor Drive voltage +42V ± 5% (voltage applied to driver) Winding resistance 10.3Ω ± 10% (per phase at 25°C) Inductance 13.4mH ± 20% (1kH,1Vrms) Drive method Bipolar drive/constant-current drive Drive IC A6628

The following operations are performed when the drive of the Pump Motor is transmitted to the Pump Unit.

Table 2-8. Pump Motor Rotation Directions and Functions

Pump Motor Rotation Direction* Functions

•Cap closing

CW direction

CCW direction

Note "*": The direction (CW or CCW) was determined viewing the motor from the

output shaft of the motor mounting plate.

• Ink suction

• Wiper resetting

• CR Lock setting

• Cap opening

• Pump release

• Wiper setting

• CR Lock resetting

Operating Principles Printer Mechanism 26

EPSON Stylus Photo R1800/R2400 Revision B

2.2.5.2 Drive Transmission Path to Pump Unit

The drive of the Pump Motor is transmitted to the Pump Unit in the following path.

Pump Motor

Combination Gear 10.2, 21.2 IS

Spur Gear 20.4 IS

Pump Unit

The following shows the internal part names and operation outline of the Pump Unit.

Combination Gear 10.2, 21.2 IS

Spur Gear

20.4 IS

The following shows the Pump Unit operating principle.

Cap Unit Side

To Waste ink pad

Figure 2-10. Pump Unit Operating Principle

 Ink Suction

1. The Pinion Gear of the Pump Motor rotates in the CW direction.

2. The Roller turn s and si mult an eou sl y pres se s the tube.

3. Ink is fed from the Cap Unit toward the Waste Ink Pad.

 Pu mp Rel ease

1. The Pinion Gear of the Pump Motor rotates in the CCW direction.

2. The Roller moves away from the tube and releases the tube.

Pump Motor and Motor Pini on Ge ar

3. Ink is not sucked.

Figure 2-9. Outline of Pump Unit Inside

Operating Principles Printer Mechanism 27

EPSON Stylus Photo R1800/R2400 Revision B

2.2.5.3 Cap Unit

The Cap Unit is designed to make airtight in the Cap sticking fast to the Print Head surface so that ink suction can be performed by the driving force of the Pump Unit.

When the printer is in a standby status or its power is OFF, the Cap Unit prevents the ink from thickening.

The following figures shows the Cap Unit operation.

Carriage Unit

Cap

Print Head

Figure 2-11. Capping M echanism

Slider cap rises to perform capping.

2.2.6 Ink Sequence

The following ink sequence is executed according to various timer, counter, flag and other information saved on the EEPROM.

 CSIC-related sequence

The ink type code stored in the CSIC Memory Chip is saved in the Main Board EEPROM. At power-on, data is read from each color CSIC and the CSIC data status becomes valid. If the data read from each CSIC has any problem, No Ink Cartridge, CSIC Error or Ink Out will be displayed. After CSIC operation is checked, the ink consumption of the I/C currently installed per color is compared with the ink consumption saved in the printer EEPROM, and control is performed under the following conditions.

 When the current ink consumption data differs between the Ink

Cartridge and the EEPROM

1. The printer judges that the Ink Cartridge was replaced while the printer was turned off. Then it resets the 1st I/C flag in the EEPROM.

2. The printer updates the number of times the CSIC is installed.

3. After incrementing the counter of I/C replacement, the printer reads the ink consumption data from the CSIC to write it over the existing data in the EEPROM following the CSIC data replacement sequence.

4. The printer model name data on the CSIC is rewritten.

Note:The reason why the model name data is rewritten from the printer

to the CSIC is to know for which model was the I/C used at the time of collecting used I/Cs.

5. The replacement flag 2 (flag that indicates CL after Replacement) is set and the CL is executed.

Operating Principles Printer Mechanism 28

EPSON Stylus Photo R1800/R2400 Revision B

 When the current ink consumption data in the Ink Cartridge and that in

the EEPROM is same

1. When the initial filling flag is set and the CSIC ink consumption is 0, the printer judges that initial filling is not yet performed. (The printer before initial filling judges that the I/C is fitted in a power-off status.)

2. Installation count updating, CSIC information rewriting, and initial filling are executed in that order.

3. If the initial filling flag is not set, the printer judges that I/C(s) has not been replaced during power-off and regards the current CSIC data as valid.

Data is written to the CSIC at the following timings.

 At powe r-of f  When starting the power saving mode  When replaced an Ink Cartridge(s)  At the tim e of clean in g

1. Reads the data from the CSIC.

2. Compare the date with the ink consumption data in the EEPROM.

3. If the EEPROM data is same as the CSIC data, ends the sequence. If they differ, the difference is added to write the sum in the CSIC.

 Initial Ink Filling

When the printer is powered on for the first time after purchase, the printer executes the initial ink filling operation to fill the ink cavities of the Head with ink. When the initial ink filling operation is performed properly, the printer clears the flag in the EEPROM so that initial ink filling operation will not be performed when it is powered on the next time. The Stylus Photo R1800 requires about 160 seconds to perform the initial ink filling operation. If the sequence does not end normally during initial filling, the initial filling flag is not cleared and the CL operating flag is set. Because of these flags, when powered on the next time, the printer assumes that it was powered off for some reason during initial filling and executes CL3 instead of the initial filling sequence. (On the conventional mode, initial filling was executed again. However, when this operation was performed, ink was wasted and therefore CL3 is executed to cover the ink filling performance.) When the initial filling flag is set and the CL operating flag is not set, the printer judges that the initial filling was not executed at all (power was switched on but the cartridges were not installed), and when the printer is powered on the next time, it executes initial filling.

 Replacement Cleaning

Replacement CL1 is executed when replaced an Ink Cartridge(s).  Amount of Ink Suction

Replacement CL1: 3.09g (0.386g per color)

Operating Principles Printer Mechanism 29

EPSON Stylus Photo R1800/R2400 Revision B

 Manual Cleaning

This printer provides three different manual cleanings to remove ink coagulated by air bubbles, viscous material or foreign matter. Perform the following manual CL operations by operating the panel or using the utility included in the printer driver. Independently of the printing path after the previous CL, perform manual CL from CL1 to CL3 in order if the cumulative printing timer counter is less than 7min. Only when the cumulative printing timer counter is more than 7min, execute only CL1.

 Amount of Ink Suction

• CL1: 1.55g (0.194g per color)

• CL2: 4.08g (0.510g per color)

• CL3: 6.47g (0.809g per color)

 Wiping Operation

Clean the nozzle surface with the right-half rubber part of the wiper.

 Flushing Operation

Prevent color mixture. Stabilize the ink surface inside the nozzles.

In addition, the printer determines which CL to perform according to the remaining amount of ink in the Cartridge. When the printer detects the amount is low, it automatically choose the CL that uses ink less than the other CLs. If the remaining amount of ink is extremely low (Ink Low or Ink Out status), the printer disables the all manual Cleanings and indicates the status on the EPW3.

 Timer Cleaning

Ink is consumed depending on the combination of the cumulative printing timer, cumulative cleaning count and cleaning timer.

 Flushing

There are two types of flushing.  Flushing before printing

This is performed to reduce the viscosity of ink in the Print Head nozzles before starting to print.

 Scheduled Flushing

This is performed to prevent ink in the Print Head nozzles from increasing its viscosity during printing.

2.2.7 Power-On Sequence

The following describes the printer operation after it is powered on.

When the Carriage Unit is in the Home Position wit h the CR Locked

1. After power-on, the drive of the APG Motor is transmitted to the Carriage Shaft, and the PG position changes from PG Typ. to PG++.

2. The drive of the CR Motor is transmitted to the Carriage Unit, and the Carriage Unit performs HP detection operation in the following path.

 Home position ⇒ Right frame ⇒ CR Lock confirmation position

⇒ Right frame ⇒ Home position

3. The drive of the Pump Motor is transmitted to the Cap Unit, the Cap opens (lowers), and the CR Lock is released.

4. After the Carriage Unit has moved leftward by the specified number of steps, the Wiper, driven by the Pump Motor, performs the following.

 W ipe r set tin g ⇒ Wiper resetting

5. The Carriage Unit returns to the home position, and the PG position returns from PG++ to PG Typ.

6. The drive of the PF Motor is transmitted to the PF Roller and Paper Eject Rollers (front and rear), which then rotate for about 2 seconds.

7. After moving between the left and right frames twice, the Carriage Unit moves to the right end of the Front Paper Guide.

8. The PF Roller and Paper Eject Rollers (front and rear) rotate.  Rotation for about 4 seconds (slow speed) ⇒ Rotation for about 2

seconds

9. The Carriage Unit returns to the home position and is secured by the CR Lock.

Operating Principles Printer Mechanism 30

EPSON Stylus Photo R1800/R2400 Revision B

When the Carriage Unit is Out of the Home Position

1. When the PG position is other than PG++ after power-on, the drive of the APG Motor is transmitted to the Carriage Shaft, and the PG position changes to PG++.

2. The drive of the CR Motor is transmitted to the Carriage Unit, and the Carriage Unit returns to the home position at slow speed.

3. The drive of the PF Motor is transmitted to the PF Roller and Paper Eject Rollers (front and rear), which then rotate for about 2 seconds.

4. After the Carriage Unit has moved leftward by the specified number of steps, the Wiper is set, driven by the Pump.

5. After the Carriage Unit has returned to the home position, it moves leftward again by the specified number of steps. And, driven by the Pump Motor, ink is sucked for about 4 seconds and then the Wiper is set, and the CR Lock is placed.

6. The Carriage Unit performs HP detection operation in the following path.

 Home position ⇒ Right frame ⇒ CR Lock confirmation position

⇒ Right frame ⇒ Home position

7. The drive of the Pump Motor is transmitted to the Cap Unit, the Cap opens (lowers), and the CR Lock is released.

8. The Carriage Unit returns to the home position, and the PG position returns from PG++ to PG Type.

9. The PF Motor drive is transmitted to the PF Roller and the Paper EJ Rollers (front and rear) to rotate them for about 2 seconds.

10. The Step 7 to 9 of "When the Carriage Unit is in the Home Position with the

CR Locked (p30)" are performed, and the Carriage Unit is locked.

2.3 Electrical Circuit Operating Principles

The electrical circuit of Stylus Photo R1800 consists of the following circuits.

 Control circuit board : C589 MAIN  Power supply circuit board : C589 PSB  Control panel board : C589 PNL  Control panel B board : C589 PNL-B

The following shows how the four circuit boards are connected.

PNL Board

MAIN Board

Power OFF +3.3VDC +42VDC

PSB/PSE Power

Supply Board

Printer

Mechanism

CR Motor

PF Motor

APG Motor

ASF Motor

Pump Motor

Head drive circuit

Sensors

Figure 2-12. Electrical Circuit Block Diagram

Operating Principles Electrical Circuit Operating Principles 31

EPSON Stylus Photo R1800/R2400 Revision B

2.3.1 Power Supply Circuit Operating Principle

The power supply circuit board of this product is the C589 PSB.

 Ba si c ci rc ui t str uc tur e

 Flyback switching system  +42VDC and +3.3VDC are supplied to the Printer Mechanism and

Control Board

The following indicates the applications of the voltages generated in this power supply circuit.

Table 2-9. Supplied Power

Voltage Applications

+42VDC Rated output current:

0.45A

+3.3VDC Rated output current:

0.5A

• CR Motor

•PF Motor

•PG Motor

• ASF Motor

• Pump Motor

• Head drive voltage

• Logic sensor circuit

• Sensor circuit

• Nozzle selection circuit (on the Print Head)

• Interfa ce control cir cuit

The following is the block diagram of the power supply circuit.

Separate-excited Simulated Resonance Flyback Converter

Over Current Limitation

F51

Fuse for LPS

Over Voltage Limitation Secondary Power

Supply SW function Low Power mode

C51, C52

Smoothing Circuit

D51

IC51

+3.3V Chopper Circuit

TRANS: T1

+42VDC

+3.3VDC

+5VDC

PSC Signal

ESAVE

QF1

Main Switching Circuit

AC Input

Over Current Protection

Filter Circuit

C1, FL1F1, TH1

Full Wave Rectifier Circuit

D11, D12, D13, D14

Smoothing Circuit

C11

Figure 2-13. Power Supply Circuit Block Diagram

Operating Principles Electrical Circuit Operating Principles 32

EPSON Stylus Photo R1800/R2400 Revision B

2.3.2 C589 MAIN Circuit Operating Principle

The C589 MAIN Board consists of the following circuits and sensors.

 Logic Circuits (CPU-ASIC 2 in 1, PROM, SDRAM)  Circuits for controlling and driving Motors

(CR Motor, PF Motor, APG Motor, ASF Motor, Pump Motor)

 Circuits for controlling and driving the Head  Interface Circuits

USB 2.0, IEEE1394

 Sensor Circuits  RTC Circuit  DAC Converter Circuit  Low-power Circuit  Logic Circuit Element for 3.3V/1.5V

The +3.3VDC generated on the C589 PSB Board is transformed to +1.5V by the Regulator IC on the C589 Main Board to use it to drive multiple components. This transformation is performed to reduce power consumption of the Logic Circuit.

The following components operate with the 3.3V/1.5V.

 CR Encoder Sensor  PF Encoder Sensor  PW Sensor  Ink Mark Sensor  APG Sensor  PE Sensor  AS F Se ns or

 Com plex Circuit (IC18)

The Complex Circuit (IC18) that consists of EEPROM, RTC, and Reset circuit is installed on the printer. Employing a large-capacity condenser for the Timer allows to backup the time recorded at power-off for about a week after the power-off.

Operating Principles Electrical Circuit Operating Principles 33

EPSON Stylus Photo R1800/R2400 Revision B

The following is the block diagram of the C589 MAIN control board.

IEEE 1394

CN3

CR Encoder Sensor

PW Sensor

Ink Mark Sensor

IEEE 1394

(IC1)

PROM

(IC4)

SDRAM

(IC12)

USB2.0

CN2

RTC

(IC18)

CN9

Data

Address

CPU-ASIC

2 in 1

(IC14)

DAC (IC2)

CN5

Regulator

(IC8)

Motor

Driver

(IC5)

Motor

Driver

(IC6)

Relay Board

CN15

CN16

CN17

CN18

CN19

PF Encoder Sensor

PE Sensor

ASF Sensor

APG Sensor 1

APG Sensor 2

CR Motor

PF Motor

Pump Motor

APG Motor

ASF Motor

CD-R Sensor

C589 PSB Board

C589 Panel Board

CSIC Board

C589 LED Board

CN7

CN10

CN8

Head

Driver

(IC7)

Q13, Q14

CN11

CN12

CN13

CN14

Print Head

Figure 2-14. C589 MAIN Control Board Block Diagram

Operating Principles Electrical Circuit Operating Principles 34

TROUBLESHOOTING

CHAPTER

EPSON Stylus Photo R1800/R2400 Revision B

3.1 Overview

This chapter describes unit-level troubleshooting.

3.1.1 Troubleshooting according to Panel Messages

After checking the printer LED and EPW3 error indications, you can grasp the fault location using the check list in this section. When you find the fault location, refer to Chapter 4 "Disassembly and Reassembly" and change the corresponding part and/or unit. The following table indicates the check point reference tables corresponding to the error states (LED and EPW3).

Table 3-1. Reference Tables of Error States

Error State Reference Table

Communication Error Refer to Table 3-2 "Troubleshooting of Communication Error" on page 37

Model Difference Refer to Table 3-2 "Troubleshooting of Communication Error" on page 37

Cover Open (Tray) Error Refer to Table 3-3 "Troubleshooting of Cover Open Error" on page 40

Paper Out Error Refer to Table 3-4 "Troubleshooting of Paper Out Error" on page 40

Paper Jam Error Refer to Table 3-5 "Troubleshooting of Paper Jam Error" on page 44

Card Loading Error Refer to Table 3-6 "Troubleshooting of Card Loading Error" on page 45

Paper Mismatch Error Refer to Table 3-7 "Troubleshooting of Paper Mismatch Error" on page 46

Ink Low Refer to Table 3-8 "Troubleshooting of Ink Low" on page 46

Ink Out Error Refer to Table 3-9 "Troubleshooting of Ink Out Error" on page 46

No Ink Cartridge/CSIC Error Refer to Table 3-10 "Troubleshooting of No Ink Cartridge/Ink Cartridge Error" on page 47

Maintenance Request Error Refer to Table 3-11 "Troubleshooting of Maintenance Request" on page 49

Fatal Error Refer to Table 3-12 "Troubleshooting of Fatal Error" on page 50

Troubleshooting Overview 36

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-2. Troubleshooting of Communication Error

Occurrence

Timing

Phenomenon Detail

At power-on The printer does not operate at

all.

Faulty Part/

Part Name

Panel FFC 1. Check that the Panel FFC is connected to the Panel Board

Connector and LED Board Connector.

Panel FFC

Panel Board

connector

Check Point Remedy

1. Connect the Panel FFC to the Panel Board and LED Board connectors.

Panel FFC

LED Board

Connector

2. Check the Panel FFC for damages. 2. Replace the Panel FFC with a new one. Panel Board 1. Check the Panel Board for damages. 1. Replace the Panel Board with a new one. LED FFC 1. Check that the LED FFC is connected to the LED Board

Connector and Main Board Connector CN8.

1. Connect the LED FFC to the LED Board Connector and Main Board Connector CN8.

LED FFC

LED Board Connector

CN8

2. Check the LED FFC for damages. 2. Replace the LED FFC with a new one.

Troubleshooting Overview 37

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-2. Troubleshooting of Communication Error

Occurrence

Timing

Phenomenon Detail

At power-on The printer does not operate at

all.

Faulty Part/

Part Name

Power Supply Board

Check Point Remedy

1. Check that the Connector Cable of the Power Supply Board is connected to the Main Board Connector CN7.

Connector cable of the

Power Supply Board

CN7

Blue line

1Pin side

2. Check that the blue colored pin of th e Pow er Sup ply Board Connector cable is inserted into the 1 Pin of the Main Board Connector CN7 as shown in the above picture.

3. Check that the Fuse F1 on the Power Supply Board has not blown.

Fuse F1

1. Connect the Connector Cable of the Power Supply Board to the Main Boar d Connector CN7.

2. Reconnect the Power Supply Board Connector cable so that the blue colored pin is inserted into the 1 Pin.

3. Replace the Power Supply Board with a new one.

4. Check the components on the Power Supply Board for damage.

4. Replace the Power Supply Board with a new one.

Troubleshooting Overview 38

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-2. Troubleshooting of Communication Error

Occurrence

Timing

At power-on After the power-on sequence

At operation Operation at power-on is

Phenomenon Detail

has started, the LED turns off and the printer does not operate.

normal, but the error appears when the print job is sent to the printer.

Faulty Part/

Part Name

Main Board 1. Check that the Relay connector of the ASF Motor and the

Relay connector of the Pump Motor are not connected to the wrong connector causing a short circuit.

Relay Connector of

the Pump Motor

Interface cable 1. Check that the I nterface cable is conne c ted between the

PC and printer.

2. Check the Interface cable for breaking. 2. Replace the Interface cable with a new

EPSON USB driver

USB 1. Check that the PC and printer are connected via the USB

1. When using USB, check that the EPSON USB driver has been installed on the PC.

hub.

Check Point Remedy

Relay Connector of

the ASF Motor

1. Connect the Relay Connector of the ASF Motor and the Relay C onnector of the Pump Motor correctly, and replace the Main Board with a new one.

1. Connect the Interface cable to the PC and printer.

one.

1. Install the EPSON USB driver.

1. Enter the USB serial No. indicated on the product nameplate. Refer to Chapter 5 "Adjustment".

IEEE1394 1. Check that the same code as the IEEE1394 QR la bel code

is saved in the EEPROM address (from BA-H to BE-H).

Printer Driver 1. Check that the printer driver for Stylus Photo R1800 has

already been installed.

2. Check that the connected printer is Stylus Photo R1800. 2. Connect the Stylus Photo R1800 printer.

Main Board 1. Check that a wron g mo del nam e has not been input to the

EEPROM address (E0<H<) on the Main Board.

1. Input the code given as the IEEE1394 QR label code. Refer to Chapter 5 "Adjustment".

1. Install the printer driver for Stylus Photo R1800.

1. Using the Adj ustment Prog ram, enter the correct model name (save 01 into E0<H>). Refer to Chapter 5"Adjustment".

Troubleshooting Overview 39

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-3. Troubleshooting of Cover Open Error

Occurrence

Timing

Phenomenon Detail

During printing A Cover Open (Tray) Error is

indicated during printin g.

Occurrence

Timing

Phenomenon Detail

At operation When the Paper Switch is

pressed, the LD Roller attempt to feed paper but the paper is not fed.

Faulty Part/

Part Name

Check Point Remedy

Printer Cover 1. Check that the CD-R Unit is not open. 1. Close the CD-R Unit.

Table 3-4. Troubleshooting of Paper Out Error

Faulty Part/

Part Name

ASF Assy. 1. Check the LD Roller or Retard Roller of the ASF Assy for

paper dust and foreign matter.

Check Point Remedy

1. Using a cleaning sheet (part code:1262115), clean the LD Roller and Retard Roller. The procedure is as follows.

(1) Place the cleaning sheet upside down

and put it into the ASF Assy.

(2) Press the Paper Switch to start paper

feed. (3) R epeat the above steps several times. * To remove persistent contamination,

staple an alcohol-dampe ned cloth to a postcard and clean the rollers in the following method.

Cleaning sheet Postcard used

Non-adhesive part

as mount

Adhesive part

This side down

Stapling

Cloth damped

with alcohol

(1) Place the alcohol-dampened cloth

toward the LD Roller surface of the

ASF Assy. (2) Hold the mount top end securely and

press the Paper Switch. (3) Repeat the paper feed sequence

several times to clean the LD Roller

surface of the ASF Assy.

Troubleshooting Overview 40

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-4. Troubleshooting of Paper Out Error

Occurrence

Timing

Phenomenon Detail

At operation Though paper is fed from the

ASF Assy, it stops near the PE Sensor Lever.

Faulty Part/

Part Name

Check Point Remedy

PE Sensor 1. Check that the Connector cable of the PE Sensor is

securely connected to the PE Sensor and Relay Board Connector CN2.

PW Sensor Connector

CN2

2. Check that the Sensor Holder is mounted to the Mechanical frame correctly.

Sensor Holder

Detection Lever

Torsion Spring

1. Connect the Connector cable of the PE Sensor to the PE Sensor and Rel ay Boa rd Connector CN2.

2. Install the Sensor Holder correctly.

3. Move the Detection Lever manually as when the paper passes, and check that the Detection Lever returns to the

3. Replace the PE Sensor Holder Unit with a new one.

original position automatically by the Torsion Spring when released. Refer to the above photo.

4. Using a tester, check that the PE Sensor is normal. ⋅ Paper absent : 2.4V or more

4. Replace the PE Sensor Holder Unit with a new one.

⋅ Paper present : 0.4V or less

Troubleshooting Overview 41

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-4. Troubleshooting of Paper Out Error

Occurrence

Timing

The Paper Switch was pressed at the setting of the CD-R Tray.

The Paper Switch was pressed at the setting of the CD-R Tray or board paper

Phenomenon Detail

The CD-R Tray HP detection sequence stops and the Tray is ejected.

Though the CD-R Tray or the Board Paper is fed toward the ASF Assy, but is ejected immediately.

Faulty Part/

Part Name

CD-R Tray 1. Check the HP detection position or white markings of the

CD-R Tray for paper dust and foreign matter.

White Markings

2. Check the Driven Rolle r s urf ace for contaminati on s uc h as paper dust and CD-R coating material.

Check Point Remedy

1. Remove paper dust and/or foreign matter from the detection position.

HP detection

position

2. Feed A4-size sheets of plain paper from the ASF Assy several times to remove the contamination.

3. Check that the HP detection position or white markings of

3. Replace the CD-R Tray with a new one.

the CD-R Tray are not chipped.

PW sensor 1. Check the PW Sensor for paper dust, ink, etc. 1. Clean the PW Sensor surface.

PW sensor

Carriage Unit Bottom

2. Compare the EEPROM values in two places (50<H> and

2. Replace the PW Sensor with a new one.

51<H>) and check that they are not approximate to each other.

Troubleshooting Overview 42

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-4. Troubleshooting of Paper Out Error

Occurrence

Timing

The Paper Switch was pressed at the setting of the CD-R Tray or board paper

Phenomenon Detail

The CD-R Tray moves toward the ASF and the posterior edge of it reaches to the Driven Roller on the Upper Paper Guide.Then the CD-R Tray tries to go farth er, but i t is ejected.

Faulty Part/

Part Name

Check Point Remedy

PW sensor 1. Check that the PW Sensor FFC is placed in the specified

routing positions and does not make contact with any parts.

CR Encoder Board

Connector

FFC

PW Sensor

Connector

2. Check that the PW Sensor FFC is connected to the CR Encoder Board and PW Sensor Connectors. Refer to the above photo.

3. Check the PW Sensor or PW Sensor FFC for damages. 3. Replace the PW Sensor with a new one.

1. Place the PW Sensor FFC in the specified routing p ositions.

2. Connect the FFC to the CR Enco der Board and PW Sensor Connectors.

Troubleshooting Overview 43

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-5. Troubleshooting of Paper Jam Error

Occurrence

Timing

At operation At the time of paper ejection,

Phenomenon Detail

the PF Roller advances the paper but cannot eject it completely.

Paper is not ejected completely and causes a jam near the Paper Eject Frame.

Faulty Part/

Part Name

– 1. Check that the size of the fed paper is not larger than that

of the paper specified by the driver.

ASF Assy. 1. Check that the paper is fed along the Right Edge Guide. 1. Feed the paper along the Right Edge

Paper EJ Frame Assy.

Spur Gear 68 Spur Gear 16; B Paper EJ Roller Assy.(front/rear)

1. Check that the Star Wheel Units have not come off the Paper EJ Frame Assy.

Paper EJ Frame Assy.

2. Check the Paper EJ Frame Assy for deformation or damages.

1. Check the Spur Gear 68 or Spur Gear 16; B for damages. 1. Replace the Front (or Rear) Paper EJ

Spur Gear 16; B

Check Point Remedy

1. Tell the user that the paper size specified by the driver is not available for the printer.

Guide.

1. Securely install the Star Wheel Units to the Paper EJ Frame Assy.

Star Wheel Units

2. Replace the Paper EJ Frame Assy with a new one.

Roller Assy with a new one.

Spur Gear 68

Troubleshooting Overview 44

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-6. Troubleshooting of Card Loading Error

Occurrence

Timing

Phenomenon Detail

During printing Printing starts but paper is not

fed.

The card size paper is loaded correctly, but Card Loading Error is displayed.

Faulty Part/

Part Name

– 1. Check that the card size paper is loaded in the portrait

PW sensor

Check Point Remedy

1. Load the cards of the same size correctly,

orientation.

and press t he Paper Switch to eject the jammed paper.

1. Check that the PW Sensor FFC is connected to the CR Encoder Board and PW Sensor Connectors.

CR Encoder Board

Connector

FFC

PW Sensor

Connector

1. Connect the FFC to the CR Enco der Board or PW Sensor.

2. Check the PW Sensor or PW Sensor FFC for damages. 2. Replace the PW Sensor with a new one.

Troubleshooting Overview 45

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-7. Troubleshooting of Paper Mismatch Error

Occurrence

Timing

At operation When feeding a CD-R (Board

Occurrence

Timing

At operation or during printing

Phenomenon Detail

Paper), an error is displayed on the LED and EPW3.

Phenomenon Detail

A message is displayed on the LED and EPW3 during printing.

Faulty Part/Part

Name

Paper EJ Frame Assy (CD-R Tray Base)

CD-R Sensor 1. Check that the Connector cable of the CD-R Sensor is

1. Check if the CD-R Tray Base is closed or not. 1. Open the CD-R Tray Base.

securely connected to the connectors of the CD-R Sensor and Panel Board.

CD-R Sensor

Connector cable of

the CD-R Sensor

2. Check the CD-R Sensor or Connector cable for damages. 2. Replace the CD-R Sensor with a new one.

Check Point Remedy

Panel Boa r d c o nnector

Table 3-8. Troubleshooting of Ink Low

Faulty Part/Part

Name

Ink Cartridge 1. Look at the remaining ink indication of the EPW3 to check

the amount of the ink remaining in the Ink Cartridge.

Check Point Remedy

1. Connect the Connector cable of the CD-R Sensor to the CD-R Sensor and Panel Board Connectors.

1. Prepare a new Ink Cartri dge.

Table 3-9. Troubleshooting of Ink Out Error

Occurrence

Timing

During printing After the Carriage has

Phenomenon Detail

detected the HP, an error is displayed on the LED and EPW3.

Faulty Part/Part

Name

Ink Cartridge 1. Look at the remaining ink indication of the EPW3 to check

whether the ink remains in the Ink Cartridge.

Check Point Remedy

1. Replace the Ink Cartridge with a new one.

Troubleshooting Overview 46

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-10. Troubleshooting of No Ink Cartridge/Ink Cartridge Error

Occurrence

Timing

At power-on After the Carriage has

Phenomenon Detail

detected the HP, an error is displayed on the LED and EPW3.

Faulty Part/

Part Name

Ink Cartridge 1. Check that the Ink Cartridge is installed correctly. 1. Install the Ink Cartridge correctly.

2. Check that the tab of the Ink Cartridge is not broken. 2. Replace the Ink Cartridge with a new one.

3. Check that the Memory Chip is not disconnected or not damaged.

Check Point Remedy

Tab

3. Replace the Ink Cartridge with a new one.

Memory Chip

Troubleshooting Overview 47

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-10. Troubleshooting of No Ink Cartridge/Ink Cartridge Error

Occurrence

Timing

Phenomenon Detail

At power-on After the Carriage has

detected the HP, an error is displayed on the LED and EPW3.

Faulty Part/

Part Name

CSIC FFC 1. Check that the CSIC FFC is connected to the CSIC Board

Connector and Main Board Connector CN10.

Check Point Remedy

1. Connect the CSIC FFC to the CSIC Board Connector and Main Board Connector CN10.

CSIC Board

Connector

CSIC FFC

CN10

2. Check the CSIC FFC for damage. 2. Replace the CSIC FFC with a new one.

CSIC Board 1. Check the CSIC Board for damage. 1. Replace the CSIC Board with a new one.

CSIC Board

Carriage Unit 1. Check that the electrodes in the Carriage, which make

1. Replace the Carriage Unit with a new one.

contact with the CSIC Board, are not bent.

Electrode

Troubleshooting Overview 48

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-11. Troubleshooting of Maintenance Request

Occurrence

Timing

At power-on At power-on, the printer does

Phenomenon Detail

not operate at all.

Faulty Part/

Part Name

Waste Ink Pads 1. Using the Adjustment Program, check if the Protection

Counter A+B value has exceeded 17772.

Check Point Remedy

1. Replace the Waste Ink Pads an d re set the Protection Counter A and B value with the Adjustment Program.

• Home side: 24<H>, 25<H>

• Opposite-to-home side: 26<H>, 27<H>

Troubleshooting Overview 49

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

At power-on At power-on, the CR Motor

Phenomenon Detail

does not operate at all.

Faulty Part/

Part Name

CR Motor 1. Check that the CR Motor connector cable is connected to

the Relay Connector.

CR Motor

Relay Connector

2. Check the CR Motor connector cable for damages. 2. Replace the CR Motor with a new one.

3. Check if the CR Motor operates normally. 3. Replace the CR Motor with a new one.

Relay Connector Cables (for the CR Motor)

1. Check that the Relay Connec tor Ca ble is c onn ec ted to the Main Board Connector CN15.

Check Point Remedy

1. Connect the CR Motor connector to the Relay Connector.

1. Connect the Relay Connector Cabl e to t he Main Board Connector CN15.

CN15

2. Check the Relay Connector Cable for damages. 2. Replace the Relay Connector Cable with a new one.

Troubleshooting Overview 50

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

At power-on The power-on sequence is

Phenomenon Detail

executed but Fatal error is displayed.

At power-on, the PF Motor does not operate at all.

Faulty Part/

Part Name

CR drive mechanism

PF Motor 1. Check that the Connector Cable of the PF Motor is

1. Check that the Carriage Shaft is lubricated with grease. 1. Wipe the surface of the Carriage Shaft with

Carriage Shaft

connected to the Main Board Connector CN16.

Check Point Remedy

a dry, soft cloth, and lubricate the Carriage Shaft with grease G-71. Refer to Chapter 6 "Maintenance".

1. Connect the PF Motor connector cable to the Main Board Connector CN16.

CN16 PF Motor

2. Check the PF Motor connector cable for damages. 2. Replace the PF Motor with a new one.

3. Check if the PF Motor operates normally. 3. Replace the PF Motor with a new one.

Troubleshooting Overview 51

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

At power-on At power-on, the APG Motor

Phenomenon Detail

does not operate at all.

At power-on, the Pump Motor does not operate at all.

Faulty Part/

Part Name

APG Motor 1. Check that the Connector Cable of the APG Motor is

connected to the Main Board Connector CN18.

2. Check the APG Motor connector cable for damage. 2. Replace the APG Motor with a new one.

3. Check if the APG Motor operates normally. 3. Replace the APG Motor with a new one.

Pump Motor 1. Check that the Pump Motor connector cable is connected

to the Relay Connector.

Check Point Remedy

APG Motor

CN18

1. Connect the APG Motor connector cable to the Main Board Connector CN18.

1. Connect the Pump Motor connector cable to the Relay Connector.

Relay Connector

2. Using a tester, check the resistance value of the Pump Motor. Value of resistance : 10.3Ω ± 10%

3. Check the Pump Motor connector cable for damages. 3. Replace the Ink System Unit with a new

2. If the resistance value is abnormal, replace the Ink System Unit with a new one.

one.

Troubleshooting Overview 52

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

At power-on At power-on, the Pump Motor

Phenomenon Detail

does not operate at all.

While the power-on sequence is being executed, Fatal error is displayed.

Faulty Part/

Part Name

Relay Connector Cables (for Pump Motor)

APG Sensor 1. Check that the APG Sensor Connector cables are

1. Check that the Relay Connec tor Ca ble is c onn ec ted to the Main Board Connector CN17.

2. Check the Relay Connector Cable for damages. 2. Replace the Relay Connector Cable with a

connected to the APG Sensors and Relay Board Connector CN4 and CN5.

Check Point Remedy

CN17

APG Sensors

1. Connect the Relay Connector Cabl e to t he Main Board Connector CN17.

new one.

1. Connect the APG Sensor Connector cables to the APG Sensors and Relay Board Connector CN4 and CN5.

CN4

CN5

2. Check the APG Sensors for damages. 2. Replace the APG Sensors with new ones.

Troubleshooting Overview 53

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

At power-on While the power-on sequence

Phenomenon Detail

is being executed, Fatal error is displayed.

Faulty Part/

Part Name

ASF Motor 1. Check that the Connector cable of the ASF Motor is

connected to the Relay Connector.

2. Using a tester, check the resistance value of the ASF Motor. Value of resistance : 7.0Ω ± 10%

3. Check the ASF Motor connector cable for damages. 3. Replace the ASF Motor with a new one.

Relay Connector Cable (for the ASF Motor)

1. Check that the Relay Connec tor Ca ble is c onn ec ted to the Main Board Connector CN19.

Check Point Remedy

ASF Motor

Relay Connector

1. Connect the Connector cable of the ASF Motor to the Relay Connector.

2. If the resistance value is abnormal, replace the ASF Motor with a new one.

1. Connect the Relay Connector Cabl e to t he Main Board Connector CN19.

CN19

2. Check the Relay Connector Cable for damages. 2. Replace the Relay Connector Cable with a new one.

Troubleshooting Overview 54

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

Phenomenon Detail

At power-on While the power-on sequence

is being executed, Fatal error is displayed.

At power-on, the Carria ge U nit moves away from the home position and bumps against the right of the Frame, then hits the left of the Frame.

Faulty Part/

Part Name

Check Point Remedy

Relay FFC 1. Check that the Relay FFC is connected to the Rela y Board

Connector CN1 and Main Board Connector CN5.

CN1

CN5

2. Check the Relay FFC for damages. 2. Replace the Relay FFC Cable with a new

CR Scale 1 . Check that the CR Scale is inserted in the slit of the CR

Encoder Sensor.

CR Scale

1. Connect the Relay FFC to the Relay Board Connector CN1 and Main Board Connector CN5.

one.

1. Insert the CR Scale into the slit of the CR Encoder Sensor.

CR Encoder

Sensor Board

2. Check the CR Scale for damages and dirt. 2. Wipe off the dirt completely or replace the CR Scale with a new one.

CR Encoder Sensor Board

1. Check the CR Encoder Sensor for paper dust, etc. 1. Remove the paper dust, etc. from the CR Encoder Sensor.

2. Check the CR Encoder Sensor Board for damages. 2. Replace the CR Encoder Sensor Board with a new one.

Troubleshooting Overview 55

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

Phenomenon Detail

At power-on At power-on, the Carria ge U nit

moves away from the home position and bumps against the right of the Frame, then hits the left of the Frame.

At power-on, the PF Roller rotates fast about a half turn.

Faulty Part/

Part Name

Check Point Remedy

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

Encoder Sensor Board Connector and Main Board Connector CN9.

CR Encoder Sensor

Board Connector

CN9

2. Check the Sensor FFC for damages. 2. Replace the Sensor FFC with a new one.

PF Encoder Sensor Holder

1. Check that the PF Encoder Sensor Holder is mounted

correctly.

2. Check that the FFC of the PF Encoder Sensor is securely

connected to the PF Encoder Sensor Board Connector and Relay Board Connector CN6.

CN6

1. Connect the Sensor FFC to the CR Encoder Sensor Board Connector and Main Board Connector CN9.

1. Install the PF Encoder Sensor Holder correctly.

2. Connect the PF Encoder Sensor FFC to the PF Encoder Sensor Board and Relay Board Connector CN6.

PF Encoder Sensor

Board Connector

3. Check the PF Encoder Sensor for paper dust, etc. 3. Remove the paper dust, etc. from the PF Encoder Sensor.

4. Check if the PF Encoder or the FFC is damaged. 4. Replace the PF Encoder with a new one.

Troubleshooting Overview 56

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

At power-on At power-on, the PF Roller

During printing After receiving a print data, or

Phenomenon Detail

rotates fast about a half turn.

while performing the CD-R Tray home position detection sequence (Board Paper detection), an error is displayed on the LED and EPW3.

Faulty Part/

Part Name

PF Scale 1. Check that the PF Scale is inserted in the slit of the PF

Encoder Sensor.

2. Check the PF Scale for damages and dirt. 2. Replace the PF Scale with a new one.

Head FFC Sensor FFC

1. Check that the Head FFC and the Sensor FFC are

securely connected to the Main Board Connectors CN9 through CN14.

Check Point Remedy

PF Scale

Slit

1. Install the PF Scale in the slit of the PF Encoder Sensor correctly.

1. Connect the Head FFC and the Sensor FFC to the Main Board Connectors CN9 through CN14.

CN9 through CN14

Troubleshooting Overview 57

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-12. Troubleshooting of Fatal Error

Occurrence

Timing

During printing After starting to print, ink is not

Phenomenon Detail

ejected and paper stops midway.

Ink is not ejected from most nozzles.

Faulty Part/

Part Name

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

Print Head Connector a nd Main Board Connectors CN10, CN12, CN13, and CN14.

2. Check the Head FFC for damages. 2. Replace the Head FFC with a new one.

Print Head 1. Check for occurrence of Head Hot. 1. Replace the Print Head with a new one.

Check Point Remedy

1. Connect the Head FFC to the Print Head Connector and Main Board Connectors CN10, CN12, CN13, and CN14.

Head FFC

Print Head

Connector

Troubleshooting Overview 58

EPSON Stylus Photo R1800/R2400 Revision B

3.1.2 Troubleshooting based on Observed Faults

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

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

Dot missing and mixed colors

Inks are not ejected from the Print Head to the Cap.

Faulty Part/

Part Name

Ink System Unit(Cap)

Check Point Remedy

1. Check for foreign matter around the Seal Rubber on the Cap Unit.

Seal Rubbers

Extension Spring, 1.19 IS

2. Check that the Ink Tube is connected to the Pump Tube. 2. Connect the Ink Tube to the Pump Tube

Ink Tubes Pump Tube

1. Remove the foreign matter aroun d the Seal Rubber completely.

securely.

Connectio n point

3. Check that the Extension Spring 1.19 IS is correctly installed to the Cap Unit.

3. Replace the Ink System Unit with a new one.

Troubleshooting Overview 59

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

Dot missing and mixed colors

Although inks are ejected from the Print Head to the Cap, the trouble still occurs after executing a cleaning cycle or replacing the Ink Cartridges.

Faulty Part/

Part Name

Print Head 1. Run a Nozz le Check , and chec k the prin ted patt ern if it has

broken lines or missing segments.

2. Check that the Head FFC is securely connected to the Print Head Connector and Main Board Connectors CN11, CN12, CN13, and CN14.

3. Check if the Head FFC is not damaged. 3. Replace the Head FFC with a new o ne.

Check Point Remedy

Head FFC

Print Head Connector

1. After running a Head Cleaning, check the Nozzle Check Pattern again.

2. Connect the Head FFC to the Print Head Connector and Main Board Connectors CN11, CN12, CN13, and CN14.

If the trouble still occurs after replacing it, replace the Print Head with a new one.

Ink System Unit Cleaner Blade

Main Board 1. Check the Main Board for damages. 1. Replace the Mai n Board with a new one.

1. Check if the Cleaner Bla de is covered wit h pape r dust or is bent.

Cleaner Blade

1. Replace the Ink System Unit with a new one.

Troubleshooting Overview 60

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

Horizontal or vertical banding / Getting smeared

Although inks are ejected from the Print Head to the Cap, almost nothing is printed or the print gets sme ared with excessive ink after executing a cleaning cycle or replacing the Ink Cartridges.

Faulty Part/

Part Name

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

Print Head Connector and Main Board Connectors CN10, CN12, CN13, and CN14.

Print Head 1. Check if the print quality recovers after running a cleaning

or replacing the Ink Cartridges.

Main Board 2. Check the Main Board for damages. 2. Replace the Mai n Board with a new one.

Check Point Remedy

1. Connect the Head FFC to the Print Head Connector and Main Board Connectors CN10, CN12, CN13, and CN14.

Head FFC

Print Head Connector

1. Run the cleaning and replace the Ink Cartridges several times. If the trouble still occurs, replace the Print Head wi th a new one.

Troubleshooting Overview 61

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

Vertical or horizontal banding / Color shading

The printout has banding vertical to the CR moving direction and is not evenly colored.

Direction of

CR movement

* If the trouble still occurs

after doing all measures described in the right-hand columns, replace the CR Motor with a new one.

Narrow stripes of the same width appear horizontally to the CR moving direction.

Direction of

CR movement

Faulty Part/

Part Name

Adjustment 1. For printing in the Bi-D mode, check that the Bi-D

Adjustment has been performed properly.

Print Head 1. Run a Nozzle Check, and check t he printed pattern i f it has

broken lines or missing segments.

Carriage Shaft 1. Check the surfaces of the Carriage Shaft for foreign

matter.

2. Check that the Carriage Shaft is fully lubricated with grease.

3. Check that the Carriage Shaft is mounted horizontally. 3. Reassemble the Carriage Shaft correctly.

4. Check the Carriage Shaft for damages. 4. Replace the Carriage Shaft with a new one.

Printer Driver and the Paper

Print Head 1. Run a Nozzle Check, and check t he printed pattern i f it has

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

broken lines or missing segments.

Check Point Remedy

1. Perform Bi-D Adjustment to eliminate displacements between the upper and lower lines. Refer to Chapter 5 "Adjustment".

1. Perform the Head Cleaning, then check the Nozzle Check Pattern. Refer to Chapter 5 If the trouble still occurs, replace the Print Head with a new one.

1. Remove foreign matter from the Carriage Shaft.

2. Wipe the grease applied to the Carriage Shaft with a dry, soft cloth, and then apply G-71 grease. Refer to Chapter 6 "Maintenance".

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

1. Perform the Head Cleaning, then check the Nozzle Check Pattern. Refer to Chapter 5 If the trouble still occurs, replace the Print Head with a new one.

"Adjustment"

PF Roller Shaft 1. Check the surface of the PF Roller Shaft for foreign matter. 1. Clean the PF Roller surface carefully.

2. Check the PF Roller Shaft for damages. 2. Replace the PF Roller with a new one.

* If the trouble still occurs

after doing all measures described in the right-hand columns, replace the PF Motor with a new one.

Troubleshooting Overview 62

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

Vertical or horizontal banding / Color shading

When printing at 360 dpi, horizontal banding and color unevenness appears at a constant frequency.

Star Wheel Rollers traces appear in the CR moving direction.

Printout is faint or blurry. Printer Driver

Faulty Part/

Part Name

Adjustment 1. Check that PF Adjustment has executed properly. 1. Perform PF Adjustment properly.

2. Check for Dot missing. 2. Replace the Ink System Unit with a new

Paper EJ Frame Assy.

and the Paper Print Head 1. Using the Adjustment Program, check that the correct Head

1. Check that the Star Wheel Units have not come off or the Star Wheel Rollers turns normally.

Star Wheel Rollers

1. Check that adequate paper is used accord ing to the se tting of the Printer Driver.

ID has been written to the EEPROM.

Check Point Remedy

Refer to Chapter 5 "Adjustment".

one.

1. Install the Star Wheel U nits to t he Paper EJ Frame Assy correctly.

Star Wheel Units

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

1. Using the Adjustment Program, enter the 31- digit code of the Head ID to the EEPROM. Refer to Chapter 5 "Adjustment".

Paper EJ Roller traces appear on the printout.

The bottom of the printout is not evenly colored.

Traces of the Paper EJ Roller appear on the printed paper or CD-R.

Adjustment 1. Check if the Positioning Adjustment of PF Roller Shaft

Retainer has been performed properly .

Printer Driver and the Paper

Front and Rear Paper EJ Roller Assys.

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

1. Check if the Paper EJ Roller is clean or not. 1. Clean the Pape r EJ Roller using the Roller

1. Make adjustments according to the specified adjustment priority. Refer to Chapter 5 "Adjustment".

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

Cleaning Mode.

Troubleshooting Overview 63

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

The printout is stained with ink.

The non-printed side or the bottom of the printout is dirty with ink.

When the paper size in the sent print data is lar ger than the size of the fed paper, data are printed on the Front Paper Guide, extending off the paper.

Ink smudges appear on the blank area of the printout.

Faulty Part/

Part Name

Front Paper Guide Pad

PW sensor 1. Check that the PW Sensor FFC is connected. 1. Connect the PW Sensor FFC.

Paper EJ Frame Assy.

1. Check that heaps of ink are not formed on the Front Paper Guide Pad and tha t the Front Paper Gui de Pad is i ns tal led securely and evenly in the setting position.

Front Paper Guide Pad Front Paper Guide

2. Check that the PW Sensor is not faulty. 2. Replace the PW Sensor with a new one.

1. Check the Star Wheel Rollers for ink stain. 1. Clean the Star Wheel Rollers with a soft

Check Point Remedy

1. If heaps of ink are formed, replace the Front Paper Guide . If it has been co nfirmed that the Ink pads have risen, reinstall the Front Paper Guide Pad correctly.

cloth.

Front Paper Guide

Front Paper Guide Pad

1. Check the Front Paper Guide for ink stain. 1. Clean the Front Paper Guide with a soft cloth.

1. Check if ink heaps are formed on the Front Paper Guide

Pad.

1. Replace the Front Paper Guide with a new one.

Troubleshooting Overview 64

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

The printout is stained with ink.

Ink smudges appear on the blank area of the printout.

Faulty Part/

Part Name

Front and Rear Paper EJ Roller Assys

Driven Roller Shaft

Ink System Unit 1. Check that wiping operation was performed properly. 1. Install the Cleaner blade correctly or

1. Check the Front and Rear Paper EJ Roller Assys for ink stain.

1. Check the Driven Roller Shaft for ink stain. 1. Clean the Driven Roller Shaft with a soft

Check Point Remedy

1. Clean the Front and Rear Paper EJ Roller Assys with a soft cloth.

Driven Roller Shaft

Rear Paper EJ Roller AssyFront Paper EJ Roller Assy

cloth.

replace it with a new one.

Cleaner Blade

Troubleshooting Overview 65

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

The printout is stained with ink.

The printout is grainy.

Ink smudges appear on the blank area of the printout.

Images are printed grainy in all print modes. Or the image looks rough.

When printed at 5760 dpi, the printed images are poor or grainy.

Faulty Part/

Part Name

PF Roller Shaft 1. Check the PF Roller Shaft for ink stain. 1. Clean the PF Roller Shaft with a soft cloth.

PF Roller Shaft

Adjustment Main Board Print Head

1. Check that PG, Bi-D and Head Angular Adjustments have been made properly.

2. Print the adjustment check patterns and check if they are grainy.

1. After making sure that PG, Bi-D and Head Angular Adjustments have been made correctly, check whether PW Sensor has been adjusted properly.

2. Print the adjustment check patterns and check if the printed ima ges are still poor or gra iny.

Check Point Remedy

1. Make the adjustments according to the specified adjustment priority. Refer to Chapter 5 "Adjustment".

2. If the images look still grainy after adjustment, replace the Main Board with a new one.

1. Make the adjustment according to the specified adjustment priority. Refer to Chapter 5 "Adjustment".

2. If the image quality does not improve after the adjustment, repla ce the Pri nt Head a nd Main Board in this order, and check the image graininess.

Regarding hue of images

The whole image is reddish. Adjustment

Print Head

1. Check if the PG has been adjusted properly. 1. Make the adjustment according to the specified adjustment priority. Refer to Chapter 5 "Adjustment".

2. Check that Bi-D and Head Angula r Adjustments ha ve been

made properl y.

3. Print the adjustment check patterns and check the image

color.

2. Make the adjustments according to the specified adjustment priority. Refer to Chapter 5 "Adjustment".

3. If the image color does not change after adjustment, replace the Print Head with a new one.

Troubleshooting Overview 66

EPSON Stylus Photo R1800/R2400 Revision B

Table 3-13. Print Quality Troubles

Observed Faults Details of the Fault

Borderless Printing Cannot make a borderless

printing (The printer prints with margins despite the borderless setting).

Occurrence

Timing

– Printing operation is

Details of the Fault

performed normally but abnormal noise is produced at power-on or during operations.

Faulty Part/

Part Name

PW sensor 1. Check if the pape r dus t or s crap of the pape r is attach ed to

the Front Paper Guide.

2. Check that the PW Sensor is operating normally. Print the adjustment check patterns with the Adjustment Program, and check that the clip function is executed normally. (The clip function is executed normally if an about 5mm margin is provided on the left of the first gray band pattern in the patterns.)

Check Point Remedy

Table 3-14. Abnormal Noise

Faulty Part/

Part Name

Adjustment 1. Check that PF Belt Tension Adjustment has been

executed properly.

Carriage Shaft 1. Check that the Carriage Shaft is fully lubricated with

grease.

Check Point Remedy

1. Remove the paper dust or scrap of the paper.

2. If it is judged that the clip function is not executed normally, replace the PW sensor with a new one. Refer to Chapter 5 "Adjustment".

1. Make the adjustment according to the specified adjustment priority. Refer to Chapter 5 "Adjustment".

1. Wipe the grease applied to the Carriage Shaft with a dry, soft cloth, and then apply grease (G-71). Refer to Chapter 6 "Maintenance".

Troubleshooting Overview 67

DISASSEMBLY AND ASSEMBLY

CHAPTER

EPSON Stylus Photo R1800/R2400 Revision B

4.1 Overview

This chapter describes procedures for disassembling and assembling this product. Unless otherwise specified, the disassembled units or main components can be reassembled by reversing the disassembling procedure.

 WARNINGs must be followed to avoid personal injury or death.  CAUTIONs must be followed to avoid damaging the printer or test

equipment.

 ADJUSTMENT REQUIRED indicates that specific mandatory adjustments

must be carried out to complete the repair.

 CHECK POINTs emphasize a particularly important process or procedure.  REASSEMBLY notes provide helpful tips on reassembly procedures,

especially when correct reassembly differs from simple reverse-assembly.

When you need to disassemble any units or parts that are not described in this chapter, refer to the exploded diagrams in the Appendix.

Before starting your work, always read the precautions described in the next section.

4.1.1 Precautions

Before starting the disassembling/reassembling work of this product, always read the following "WARNING" and "CAUTION" carefully.

W A R N I N G

 Before starting the disassembling/reassembling work of

this product, always disconnect the power cable. When the power supply cable must be connected for voltage measurement or like, be extremely careful not to get an electric shock and follow the procedures in this manual to do your work.

 Wear protective goggles to protect your eyes from ink. If

ink gets in your eyes, wash your eyes with clean water and see a doctor.

 To prevent injury from sharp metal edges, always wear

gloves for disassembly and reassembly.

 If ink has adhered to your skin, wash it with soap and

water. If it has caused skin irritation, see a doctor.

 To protect the microprocessors and circuitry, use static

discharge equipment, such as anti-static wrist straps when accessing the internal components.

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EPSON Stylus Photo R1800/R2400 Revision B

C A U T I O N

 When transporting a printer that uses HAV Ink

Cartridges, remove all the cartridges beforehand. Especially for air transportation, make sure to remove cartridges because ink will flow into the Cap Unit via the Print Head due to the reduction of the atmospheric pressure, which may cause ink leakage.

 Use only the recommended tools for disassembly,

reassembly and adjustment. Refer to Table 4-1 Tool List on page 74.

 Tighten screws to the specified torques.  Use the specified lubricants and adhesives.

Refer to Capter 6 "Maintenance".

 Make the necessary adjustments under the instructions

given for disassembling. Refer to Capter 5 "Adjustment".

4.1.2 Tools

The following table indicates the tools recommended for use for disassembly, reassembly and adjustment.

Table 4-1. List of Tools

Tool Name Code

Phillips Screw Driver, No.1 1080530 Phillips Screw Driver, No.2 1080532 Flat-blade Screwdriver 1080527 Tweezers 1080561 Needle nose pliers 1080564 Acetate Tape 1003963 PF Tension Measuring Tool 1231678 Penlight –

The above tools are all available in the market

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EPSON Stylus Photo R1800/R2400 Revision B

4.1.3 Screws

The following table lists the screws used in this product. When disassembling and reassembling the printer, refer to the following table and use the specified screws in the specified positions.

Table 4-2. List of Screw Types

Image Description Image Description

1) C.B.P. 3x10 2) C.B.S. 3x6

3) C.B.S. (P2) 3x10 4) C.B.P. 3x8

5) C.B.S. 3x8 6) C.B.S. (P4) 3x8

Table 4-2. List of Screw Types

Image Description Image Description

11) C.C. 3x4 12) C.P.B. (P1) 1.7x5

13) C.B.P. 2.6x5

7) C.B.P. 2.6x8 8) C.B.S. (P4) 3x6

9) C.B.P. 3x6 10) C.B.S. 3x4

Disassembly And Assembly Overview 71

EPSON Stylus Photo R1800/R2400 Revision B

4.1.4 Work Completion Checklist

Whenever the printer is serviced, use the checklist shown below to confirm all work is completed properly and the printer is ready to be returned to the user.

Table 4-3. Work Completion Check

Classification Item Check Point Check Field

Main Unit Self-test Is the operation normal?

On-line Test Is the printing attempt successful? Checked / Not necessary Print Head Is ink discharged normally from all the nozzles? Carriage Mechanism Does it move smoothly? Checked / Not necessary

Are there any abnormal noises during its operation? Are there any dirt or foreign objects on the CR Shaft? Checked / Not necessary Is the CR Motor at the correct temperature? (Not too hot to

touch?)

Paper Feeding Mechanism

Adjustment Specified Adjustment Are all the adjustments correctly completed? Checked / Not necessary Lubrication Specified Lubrication Has lubrication been applied at the specified points?

Function ROM Version Version: Checked / Not necessary Packing Ink Cartridge Have the ink cartridges been removed?

Protective Materials Have all relevant protective materials been attached to the

Others CD-R Tray Is the operation normal? Checked / Not necessary

Cutter Unit Is the operation normal? Checked / Not necessary Accessories Have all the accessories sent by the user been included in the

Is paper advanced smoothly? Checked / Not necessary No paper jamming? No paper skew? Checked / Not necessary No multiple-sheet feeding? Is the PF Motor at correct temperature? (Not too hot to touch?) Checked / Not necessary No abnormal noises? Is the paper path free of obstructions? Checked / Not necessary

Is the amount of lubrication correct? Checked / Not necessary

printer?

package?

Checked / Not necessary

Checked / Not necessary Checked / Not necessary

Checked / Not necessary

Disassembly And Assembly Overview 72

EPSON Stylus Photo R1800/R2400 Revision B

4.2 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

"Rear Housing"

4.2.1.1 page 74.

"Side Housing"

4.2.1.2 page 74.

"Upper Housing"

4.2.1.4 page 76.

"Lower Housi ng and Printer Mechanism"

4.2.1.5 page 78.

"Paper EJ Frame

Assy."

4.2.6.6 page 105.

"CD-R Release

Lever Sub Assy"

4.2.6.7 page 106.

"Ink System Unit"

4.2.6.8 page 109.

"Board Assy "

4.2.5.1 page 87.

"LED Board"

4.2.5.2 page 89.

"Waste Ink Pad"

4.2.2 page 80.

"Front Paper Guide

and Paper eject roller"

4.2.6.12 page 116.

"PF Encoder

Sensor Holder"

4.2.8.4 page 126.

"Upper Paper

Guide Assys."

4.2.6.11 page 114.

"PF Roller Shaft"

4.2.6.13 page 119.

"CR Scale"

4.2.6.2 page 91.

"Front Paper

Guide Pad"

4.2.3 page 82.

"APG Assy"

4.2.6.3 page 93.

"PF Motor"

4.2.7.2 page 123.

"ASF Assy"

4.2.4 page 83.

"APG Assy"

4.2.6.3 page 93.

"Release Holder

Assy"

4.2.6.9 page 112.

"FLAG Release

Assy."

4.2.6.10 page 113.

"PE Sensor

Holder"

4.2.8.1 page 124.

"Upper Paper

Guide Assys."

4.2.6.11 page 114.

"CSIC Board"

4.2.6.5 page 103.

"PE Sensor

Holder"

4.2.8.1 page 124.

"Print Head"

4.2.6.1 page 89.

"CR Scale"

4.2.6.2 page 91.

"LED Board"

4.2.5.2 page 89.

"APG Assy"

4.2.6.3 page 93.

"Carriage Shaft

and Carriage Unit"

4.2.6.4 page 95.

"Ink Mark Sensor

and PW sensor"

4.2.8.2 page 125.

The step for the unit or discrete part within the broken line is not the shortest removal step but is the step necessary for removing the next unit or discrete part.

"Paper EJ Frame

Assy."

4.2.6.6 page 105.

"CR Encoder

Sensor Board"

4.2.8.3 page 126.

"CR Motor"

4.2.7.1 page 122.

"PF Encoder

Sensor Holder"

4.2.8.4 page 126.

Figure 4-1. Disassembly Flowchart

Disassembly And Assembly Disassembly 73

EPSON Stylus Photo R1800/R2400 Revision B

4.2.1 Removing the Housings

4.2.1.1 Rear Housing

1. Remove the four C.B.P. M3 x 10 screws and the C.B.S. M3 x 6 screw that secure the Rear Housing, and remove it from the printer.

1) C.B.P. 3x10 (6±1 kgf.cm)

2) C.B.S. 3x6

Rear Housing

Figure 4-2. Removing the Rear Housing

(6±1 kgf.cm)

4.2.1.2 Side Housing

1. Remove the Rear Housing. See Section 4.2.1.1 on page 74.

2. Insert a flat-blade screwdriver into the notch on the side of the Lower Housing, and lift it in the direction of the arrow to remove the Left Side Housing releasing the two tabs. Remove the Right Side Housing in the same way.

Side Housing

Figure 4-3. Removing the Side Housings

Disassembly And Assembly Disassembly 74

EPSON Stylus Photo R1800/R2400 Revision B

Match the positioning holes of the Upper Housing with the guide pins of the Side Housing.

Guide Pins

Tabs

Notches

Positioning

Holes

Figure 4-4. Reinsta lling the Side Housing

4.2.1.3 Locking/Releasing the Ca rriage and Opening/Closing

the CD-R Unit

Locking/releasing the Carriage and opening/closing the CD-R Unit are mutually related. The CD-R Unit cannot be opened when the Carriage Lock is released.

1. Remove the Right Side Housing. S ee Sec ti on 4.2.1 .2 on page 74.

2. Insert the flat-blade screwdriver into the hole on the right side of the frame, and rotate the white shaft of the Ink System Unit.

Table 4-4. Relationship between Carriage Lock and CD-R Unit

Direction of

Rotation

Clockwise (CW) Locked Can be

Counterclockwise (CCW)

Carriage CD-R Unit

opened/closed.

Released Locked

CCW

White Shaft

Figure 4-5. Locking/Releasing the Carriage and

Opening/Closing the CD-R Unit

Disassembly And Assembly Disassembly 75

EPSON Stylus Photo R1800/R2400 Revision B

C A U T I O N

When moving the Carriage Unit with the CD-R Unit opened, turn the PG CAM (Right) beforehand so that PG++ points downwards to release the PG in order to pre vent interference between the Paper EJ Frame and Carriage Unit.

Carriage

Unit

Point of

Interference

PG Cam (Right)

Paper EJ Frame

PG++ position

Figure 4-6. Interference between the Frame and Carriage Unit

4.2.1.4 Upper Housing

1. Remove the Side Housing. See Section 4.2.1.2 on page 74.

2. Open the Printer Cover and Paper Support.

3. Open the CD-R Unit. See Section 4.2.1.3 on page 75.

4. Remove the six C.B.P. M3 x 10 screws and three C.B.S. M3 x 6 screws that secure the Upper Housing.

Guide Pin

Printer Cover

Upper

Housing

Guide Pin

Paper

Support

1) C.B.P. 3x10 (6±1 kgf.cm)

2) C.B.S. 3x6 (6±1 kgf.cm)

CD-RUnit

Tab

Figure 4-7. Screws that Secure the Upper Housing

Disassembly And Assembly Disassembly 76

EPSON Stylus Photo R1800/R2400 Revision B

5. Disconnect the Panel FFC and CD-R Sensor Cable from connectors CN1 and CN2 on the Switch Board, and release the CD-R Sensor Cable from the tabs of the Upper Housing.

CN2

CN1

Guide Pin

CD-R Sensor Cable

Panel FFC

Tabs

Figure 4-8. Disconnecting the CD-R Sensor Cable and Panel FFC

6. Remove the Guide Pins from the two Tabs shown in Figure 4-7., and remove the Upper Housing upwards.

 Align the Guide Pins with the positioning holes on the

Upper Housing. See Figure 4-7.

 When inserting the CD-R Sensor Cable into the Switch

Board, press the Connector CN2 to make sure that it is firmly installed on the Switch Board.

 Referring to Figure 4-7., correctly route the Panel FFC

and CD-R Sensor Cable.

 Tighten the screws in the order shown in Figure 4-7.

PRINTER COVER

7. Remove the two C.B.P. M3 x 10 screws that secure the Left Printer Cover Holder, and draw it out in the direction of the arrows. Remove the Right Printer Cover Holder in the same way.

Right Printer Cover Holder

1) C.B.P. 3x10 (6±1 kgf.cm)

Left Printer Cover Holder

Figure 4-9. Disconnecting the Printer Cover Holder

Disassembly And Assembly Disassembly 77

EPSON Stylus Photo R1800/R2400 Revision B

8. Lift the Upper Housing in the direction of the arrows, pull the Guide Pin on the Upper Housing away from the notch on the printer cover, and remove the Printer Cover.

Upper Housing

Guide Pin on the Upper Housing

Printer Cover

Notch on the Printer Cover

4.2.1.5 Lowe r Housing and Pri nter Mechanism

1. Remove the Upper Housing. See Section 4.2.1.4 on page 76.

2. Grip both ends of the two Ink Tube Fasteners with your fingers, slide them in the direction of the arrows, and draw out the Waste Ink Tubes from the two Ink Tubes.

3. Remove the four C.B.P. M3 x 10 screws and two C.B.S. (P2) M3 x 10 screws that secure the Printer Mechan ism.

C A U T I O N

If you hold the Printer Mechanism at locations other than the handling positions when performing the following procedure, the frame might become deformed. Be sure to hold the Printer Mechanism by the positions.

Handling Positions

Figure 4-11. Handling the Printer Mechanism

4. Hold the Printer Mechanism by its handling positions with both hands, and

Figure 4-10. Removing the Printer Cover

remove it from the Lower Housing.

Disassembly And Assembly Disassembly 78

EPSON Stylus Photo R1800/R2400 Revision B

1) C.B.P. 3x10 (6±1 kgf.cm)

Printer Mechanism

 Insert the Waste Ink Tube with the red line into the lower

Ink Tube.

130 Digit Side Waste Ink Tube

0 Digit Side Waste Ink Tu be

130 Digit Side In k Tube

0 Digit Side Ink Tube

Figure 4-13. Installing the Ink Tubes

 Make sure that the Waste Ink Tubes are not nipped by

the Printer Mechanism.

 Tighten the screws in the order shown in Figure 4-12.

Ink Tubes

Fastener

1) C.B.P. 3x10 (6±1 kgf.cm)

Step 2

Waste Ink Tubes

Fastener

A D J U S T M E N T

R E Q U I R E D

After replacing the Printer M ech anism, b e sure to m ake the following adjustments.

1. Platen Gap (PG) Adjustment

2. Ink Mark Sensor Adjustment

3. Head Angular Adjustment

4. Auto Bi-D Adjustment

5. Ink Mark Sensor Adjustment

6. First dot position

3) C.B.S. (P2) 3x10

7. PW Sensor Adjustment

8. PF Deteriorat ion Compensa tio n Counter Reset

9. PF Adjustment

10. PF Adjustment (Bottom Margin)

11. CR Motor Drive Dispersion Measurement Sequence Refer to Chapter 5 "Adjustment" for details of the

adjustments.

Lower Housing

Figure 4-12. Screws that Secure the Printer Mechanism

Disassembly And Assembly Disassembly 79

EPSON Stylus Photo R1800/R2400 Revision B

4.2.2 Waste Ink Pad

1. Remove the Lower Housing. See Section 4.2.1.5 on page 78.

2. Remove the C.B.P. M3 x 8 screw that secures the Waste Ink Tube.

3. Remove the 15 Waste Ink Pads from the Lower Housing.

Waste Ink Pads

 Referring to Figure 4-15., correct ly inst all the Was te Ink

Pads.

Installation

Order

Installation

Order

Figure 4-15. Reinstalling the Waste Ink Pads

4) C.B.P. 3x8 (6±1 kgf.cm)

Figure 4-14. Removing the Waste Ink Pads

Disassembly And Assembly Disassembly 80

EPSON Stylus Photo R1800/R2400 Revision B

 Check the positions and the routing of the Upper and

Lower Waste Ink Tubes. 0 digit side : Lower side 130 digit side : Upper side

Waste Ink Tubes

0 Digit Side130 Digit Side

Figure 4-16. Positions of Waste Ink Tubes

A D J U S T M E N T

R E Q U I R E D

After replacing or removin g t he Wast e Ink Pads, a lways m ake the following adjustment.  Waste Ink Protection Counter Clear

Refer to Chapter 5 "Adjustment" for details of the adjustment.

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EPSON Stylus Photo R1800/R2400 Revision B

4.2.3 Front Paper Guide Pad

1. Remove the Printer Mechanism. See Section 4.2.1.5 on page 78.

2. Remove the Front Paper Guide Pads and Front Paper Guide Pad Protection from the Front Paper Guide with tweezers.

Front Paper GuideFront Paper Guide Pads

Front Paper Guide

Pad Protection

After installing the Front Paper Guide Pads and Front Paper Guide Pad Protection, lift the Printer Mechanism, and check the following points.

1. Make sure that the Tabs on the Pads are not cut midway.

2. Make sure that all Tabs are in place on the Front Paper Guide, and that they are facing down (towards the Waste Ink Pads) without any folds.

3. Make sure that the Tab foldbacks are protruding completely from the Front Paper Guide.

Tabs

Figure 4-18. Reinstalling the Front Paper Guide Pad (1)

4. Make sure that the Pad is placed under a tab of the Front Paper Guide.

Figure 4-17. Removing the Front Paper Guide Pads and

the Front Paper Guide Pad Protection

C A U T I O N

Take care to prevent the grease contained on the Front

Figure 4-19. Reinstalling the Front Paper Guide Pad (2)

Paper Guide Pads and Front Paper Guide Pad Protection from sticking to other parts.

5. Make sure that all the Tabs on the Pads are fitted into the securing section under the Front Paper Guide.

Disassembly And Assembly Disassembly 82

EPSON Stylus Photo R1800/R2400 Revision B

4.2.4 ASF Assy

1. Remove the Upper Housing. See Section 4.2.1.4 on page 76.

2. Remove the C.B.S. M3 x 8 screw that secures the Earth Cables on the right rear side of the printer, and remove the Earth Cables.

3. Disconnect the ASF Motor Connector from the Relay Connector.

4. Disconnect the Relay Connector Cable from the ASF Assy.

ASF Assy

ASF Motor

Relay

Connector

Relay

Connector

Cable

Ferrite Core

5) C.B.S. 3x8 (8±1 kgf.cm)

Earth Cables

5. Disconnect all Cables and the FFC from the connectors on the Relay Board.

 CN1 : Relay FFC  CN2 : PE Sensor Cable  CN4 : APG Sensor Cable (downside)  CN5 : APG Sensor Cable (the upper side)  CN6 : PF Encoder Sensor FFC

6. Disconnect the FFC bundled by the Acetate Tape from the CN8 to CN14 on the Main Board, and release it from the groove on the ASF Assy.

7. Disconnect the APG Motor Cable and PE Sensor Cable from the ASF Assy.

8. Peel off the PF Encoder FFC secured by two pieces of double-sided adhesive tape from the ASF Assy.

PF Encoder Sensor FFC

Two-sided

Tapes

APG Motor Cable

Groove

PE Sensor Cable

Figure 4-20. Releasing the Cables (1)

 Secure the two Earth Cables together with the screw.  Referring to Figure 4-20., correctly route the Relay

Acetate Tape

Relay Board

Connector Cable.

CN8 to CN14

Main Board

Figure 4-21. Releasing the Cables (2)

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EPSON Stylus Photo R1800/R2400 Revision B

Referring to Figure 4-21., correctly route each of the Cables and FFC.

9. Remove the two C.B.S. M3 x 6 screws that secure the two Guide Roller LDs.

10. Gently pull the LD Roller Shaft to the rear of the printer, and remove the Guide Roller LDs.

Tab

2) C.B.S. 3x6 (8±1 kgf.cm)

Guide Pin

Front

Face

Guide Roller LD

11. Remove the three C.B.S. (P4) M3 x 8 screws that secure the ASF Assy, and remove the ASF Assy from the Printer Mechanism.

ASF Assy

6) C.B.S. (P4) 3x8 (6±1 kgf.cm)

Figure 4-23. Removing the ASF Assy

LD Roller Shaft

Guide Roller LD

Figure 4-22. Removing the Guide Roller LD

Align the Guide Pins and Tabs on the Guide Roller LDs with the positioning holes on the Main Frame. Refer to Figure

4-22.

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EPSON Stylus Photo R1800/R2400 Revision B

 Align the Guide Pin and four Tabs on the ASF Assy with

the positioning holes on the Main Frame so that there is no gap between the ASF Assy and the Main Frame.

Tab

Guide Pin

Tab

 Adjusting the Position of the ASF Guide Roller LDs

When installing the Guide Roller LDs, the position of the Guide Roller LDs must be adjusted so that the positions of the LD Roller Shaft and Retard Roller are optimized in order to maintain the paper feed accuracy.

1. After installing the ASF Assy, loosen the two C.B.S. M3 x 6 screws that secure the Guide Roller LD. Refer

to Figure 4-22.

2. Turn Combination Gear 29.11 on the right side of the ASF Assy CCW to raise the Hopper to the upper limit position (until the Hopper Pad contacts the LD Roller).

Combination Gear 29.11

LD Roller

Hopper Pad

Figure 4-24. Reinstalling the ASF Assy.

Figure 4-25. Raising the Hopper

 Tighten the screws in the order shown in Figure 4-23.

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EPSON Stylus Photo R1800/R2400 Revision B

3. Look the printer's inside through a gap between the Roll Paper Frame and the ASF Assy with a penlight. You can see the Tab on the Retard Roller Holder at the back of the two Reference Tabs on the ASF Assy. After making sure that the two Reference Tabs are aligned when viewed edge-on, adjust the position of the Retard Roller Holder Tab by pressing the Guide Roller LD (0 digit side) so that it is placed within the range as shown in the simplified diagram below.

Roll Paper Frame

Reference

Tabs

4. Align the Guide Pin and Tab on the 0 Digit Side Guide Roller LD with the positioning holes on the Main Frame, and tighten the Guide Roller LD (0 Digit Side) with the screws. See Figure 4-27.

5. Check the position of the Retard Roller Holder Tab again through the gap. If it is not inside the range, remove the screws on the Guide Roller LD (0 Digit Side), and repeat steps 2 to 4 to set the Tab within the range.

6. Check the clearance in both ends of the positioning hole that the Guide Roller LD Tab is inserted. And align Guide Roller LD (130 Digit Side) to the same height, and tighten with the screws.

Gap

Guide Pin

Tab

Figure 4-27. Checking the Position of Tab on the Guide Roller LD

Table 4-5. Trouble Caused by Setting Mistakes

Retard Roller

Notch

Holder Tab

 The Range of the Retard Roller Holder Tab

Reference Tabs

Retard Roller Holder Tab

A D J U S T M E N T

R E Q U I R E D

Tab Position Trouble

Above upper limit

Below lower limit

• Paper fee d mistakes caused by no n-feed

• Skewing of business cards

• Multiple-sheet feeding

The following adjustment must be performed when the ASF Assy is replaced or remov ed:  First dot position

Lower Limit Upper Limit

Figure 4-26. Aligning the Position of the Guide Roller LD (0 Digit Side)

Refer to Chapter 5 "Adjustment" for details of the adjustments.

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EPSON Stylus Photo R1800/R2400 Revision B

4.2.5 Removing the Boards

4.2.5.1 Board Assy

1. Remove the Rear Housing. See Section 4.2.1.1 on page 74.

2. Remove the four C.B.S. M3 x 6 screws and two C.B.S. (P2) M3 x 10 screws that secure the Board Assy.

2) C.B.S. 3x6 (8±1 kgf.cm)

3) C.B.S. (P2) 3x10 (6±1 kgf.cm)

Board Assy

3. Disconnect all the FFCs and Connector Cables connected to the Board Assy in order from the front, and draw out the Board Assy from the Printer taking care to avoid interference between the Manual Paper Guide and the Ground Plates on the Board Assy.

 CN5 : Relay FFC  CN8 : LED FFC  CN9 : Sensor FFC  CN10 : Sensor FFC  CN11 : Head FFC  CN12 : Head FFC  CN13 : Head FFC  CN14 : Head FFC  CN16 : PF Motor Connector Cable  CN17 : Relay Connector Cable (for Pump Motor)  CN18 : APG Motor Connector Cable  CN19 : Relay Connector Cable (for CR Motor)

Manual Pap er

Guide

Board Assy

Point of

Grounding Plate

Interference

Figure 4-28. Screws that Secure the Board Assy

Tighten the screws in the order shown in Figure 4-28.

FFCs and Connectors

C A U T I O N

When performing the following procedure, prevent the FFC and Connector Cables from being scratched.

Figure 4-29. Removing the Board Assy

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EPSON Stylus Photo R1800/R2400 Revision B

 Make sure that the FFCs are not crossing each others,

and connect each of the FFCs and Connector Cables to the Main Board while paying attention to the edge of the Shield Plate.

 Take care not to put the Board Assy onto the three

Ground Plates.

Grounding Plates

Figure 4-30. Reinstalling the Board Assy

A D J U S T M E N T

R E Q U I R E D

The following adjustment must be performed after replacing the Main Board.  When possible to read data from the old board

1.Main Board Data Read/Write

2.Colorimetric Calibration

 When impossible to read data from the old board

1.Market & Initial Settings

2.USB ID Input

3.IEEE-1394 ID Input

4.Head ID Input

5.Ink Mark Sensor Adjustment

6.Head Angular Adjustment

7.Auto Bi-D Adjustment

8.Ink Mark Sensor Adjustment

9.First dot position

10.PW Sensor Adjustment

11.Reset PF Deterioration counter (write the maximum value)

12.PF Adjustment

13.PF Adjustment (Bottom Margin)

14.Colorimetric Calibration

15.CR Motor Drive Dispersion

Refer to Chapter 5 "Adjustment" for details of the adjustments.

A D J U S T M E N T

R E Q U I R E D

The following adjustment must be performed after replacing the Power Supply Board.  CR Motor Drive Dispersion Refer to Chapter 5 "Adjustment" for details of the adjustments.

Disassembly And Assembly Disassembly 88

EPSON Stylus Photo R1800/R2400 Revision B

4.2.5.2 LED Board

1. Remove the Upper Housing. See Section 4.2.1.4 on page 76.

2. Peel off a piece of acetate tape from the LED Sheet.

3. Release the three Tabs from the LED sheet, and open the LED sheet.

4. Peel off a piece of acetate tape from the Panel FFC, and remove the Panel FFC from the LED Board.

5. Remove the LED FFC from the LED Board.

6. Remove the C.B.S. (P4) M3 x 8 screw that secures the LED Board, and remove the LED Board.

LED Sheet

LED FFC

6) C.B.S. (P4) 3x8 (6±1 kgf.cm)

Acetate Tape (Step 2)

Panel FFC

Acetate Tape

Tab

(Step 4)

4.2.6 Disassembling the Printer Mechanism

4.2.6.1 Print Head

1. Remove the Upper Housing. See Section 4.2.1.4 on page 76.

2. Release the Carriage lock, and move the Carriage Unit to the center.

See Section 4.2.1.3 on page 75.

3. Open the Ink Cartridge Cover.

C A U T I O N

4. Release the FFC Guide from the three Tabs to remove the FFC Guide from the Carriage Unit.

When performing the following procedure, take care to prevent the Tab receptacle on the FFC Guide from being damaged.

FFC Guide

LED Board

Guide Pins

Figure 4-31. Removing the LED Board

Ink Cartridge Cover

Align the two Tabs on the Upper Housing with the positioning holes on the LED Board. See Figure 4-31.

Figure 4-32. Removing the FFC Guide

Tabs

Disassembly And Assembly Disassembly 89

EPSON Stylus Photo R1800/R2400 Revision B

5. Remove the three C.B.P. M2.6 x 8 screws that secure the Print Head using No.1 Phillips Screw Driver, and vertically lift the Print Head to remove.

Head

7) C.B.P. 2.6x8 (3±0.5 kgf.cm)

Figure 4-33. Removing the Print Head

6. Remove the two Head FFCs from the Print Head.

 Make sure that the Pad is attached at the position in

Figure 4-35..

Pad

Figure 4-35. Attaching the Pad

 The Print Head must be installed with the Guide Pins of

the Carriage Unit aligned with the positioning holes on the Print Head.

Guide Pins

Positioning Holes

Head FFC

Figure 4-34. Removing the Head FFC

Figure 4-36. Reinstalling the Print Head (1)

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EPSON Stylus Photo R1800/R2400 Revision B

A D J U S T M E N T

R E Q U I R E D

 The screws must be tightened in the order shown in

Figure 4-33. while the Print Head is held down in the

direction of the arrow.

Figure 4-37. Reinstalling the Print Head (2)

After replacing or removing the Print Head, always make the following adjustm ents.

1. PG Adjustment

2. Head ID Input (only after replacing)

3. Ink Mark Sensor Adjustment

4. Head Angular Adjustment

5. Auto Bi-D Adjustment

6. First dot position

7. PW Sensor Adjustment

8. Colorimetric Calibration (only after replacing) Refer to Chapter 5 "Adjustment" for details of the adjustments.

4.2.6.2 CR Scale

1. Remove the Upper Housing. See Section 4.2.1.4 on page 76.

2. Release the Carriage lock, and move the Carriage Unit to the center.

See Section 4.2.1.3 on page 75.

C A U T I O N

3. Pull the right end of the CR Scale in the direction of the arrow, and remove the CR Scale from the Tab on the Right CR Shaft Mounting Plate.

4. Draw out the right end of the CR Scale towards the left direction from the rear of the Carriage Unit.

Step 4

When performing the following procedure, take care to prevent both ends of the CR Scale from being broken.

Right CR Shaft

Mounting Plate

Step 3

CR Scale

Tab

Figure 4-38. Drawing Out the CR Scale

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EPSON Stylus Photo R1800/R2400 Revision B

5. Remove the coil section of Torsion Spring 24.7 from the Tab on the Left CR Shaft Mounting Plate with tweezers.

Left CR Shaft

Mounting Plate

Torsion Spring 24. 7

Tab

Figure 4-39. Removing the Torsion Spring 24.7 (1)

6. Remove Torsion Spring 24.7 from the CR Scale by the following procedure:

6-1. Stand the coil section. 6-2. Lower the coil section downwards to remove Foot 1 from the notch

on the Left CR Shaft Mounting Plate. 6-3. Turn the coil section counterclockw ise . 6-4. Remove Torsion Spring 24.7 from the hole on the CR Scale.

7. Turn the CR Scale 90º, and remove it from the Tab on the Left CR Shaft Mounting Plate.

Tab

Figure 4-41. Removing the CR Scale

Step 6-1

Step 6-3

Step 6-2

Foot 1

Notch

Figure 4-40. Removing the Torsion Spring 24.7 (2)

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EPSON Stylus Photo R1800/R2400 Revision B

 Pass the CR Scale through the slot on the CR Encoder.

CR Encoder

CR Scale

Figure 4-42. Re installing the CR Scale (1)

 Set the left end of the CR Scale with the chamfered edge

facing upwards.

Chamfered edge

CR Scale

Figure 4-43. Re installing the CR Scale (2)

4.2.6.3 APG Assy

1. Remove the Upper Housing. See Section 4.2.1.4 on page 76.

2. Disconnect the APG Motor Connector Cable from Connector CN18 (red) on the Main Board, and Remove the Cable from the ASF Assy.

3. Disconnect the Connector Cables from the two APG Sensor Connectors.

APG Motor

APG Assy

APG Sensor Connectors

CN18

Figure 4-45. Disconnecting the Connector Cables

Referring to Figure 4-45., correctly route the APG Connector Cable.

 Place the right end of the CR Scale correctly so that it is

not hooked onto the Right CR Shaft Mounting Plate.

CR Scale

Hooked Portion

Figure 4-44. Re installing the CR Scale (3)

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EPSON Stylus Photo R1800/R2400 Revision B

4. Remove the three C.B.S. M3 x 6 screws that secure the APG Assy, and remove the APG Assy from the Main Frame.

2) C.B.S. 3x6 (8±1 kgf.cm)

Figure 4-46. Removing the APG Assy

 When installing the APG Assy, make sure that the FLAG

Release Assy is not in a released state (Upper Paper Guide down).

 Match the phase of the APG Assy in the following

procedure.

1.Match the delta marks of Spur Gear 16 and Combination Gear 22, 28.8, 32.4.

Combination Gear,

22, 28.8, 32.4

Delta Marks

Spur Gear 16

2.At the position where the Tab can be identified through the notch of the PG Frame, match the delta marks of Spur Gear 16 and PG Cam (Left).

Spur Gear 16 PG Cam (L eft)

Tab

FLAG Release Assy.

Upper Paper Guide

Delta Marks

Figure 4-48. Phase Matching

 Tighten the screws in the order shown in Figure 4-46.

Released

Not Released

Figure 4-47. Reinstalling the APG Assy

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EPSON Stylus Photo R1800/R2400 Revision B

4.2.6.4 Carriage Shaft and Carriage Unit

1. Remove the LED Board. See Section 4.2.5.2 on page 89.

2. Remove the Print Head. See Section 4.2.6.1 on page 89.

3. Remove the CR Scale. See Section 4.2.6.2 on page 91.

4. Remove the APG Assy. See Section 4.2.6.3 on page 93.

5. Point any position other than PG++ on the PG Cam (Right) to face down.

PG Cam (Right)

Figure 4-49. Setting the PG Cam

6. Remove the two C.B.S. M3 x 6 screws that secure the Frame Support Plate (Left), and remove it.

Notch

Left Frame Support Plate

Tab

2) C.B.S. 3x6 (8±1 kgf.cm)

Paper EJ Frame Assy.

Tabs

Figure 4-50. Removing the Left Frame Support Plate

 Insert the Left Frame Support Plate into the notch on the

Main Frame. See Figure 4-50.

 Align the two Tabs on the Main Frame and the Tab on the

Paper EJ Frame Assy with the three position ing holes on the Frame Support Plate (Left). See Figur e 4 -5 0 .

 Align the Tab (rear side) of the Left Frame Support Plate

with the outside of the Left CR Shaft Mounting Plate. See

Figure 4-50.

 Tighten the screws in the order shown in Figure 4-50.

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EPSON Stylus Photo R1800/R2400 Revision B

7. Remove the foot of Left PG Torsion Spring from Tab A, and remove the coil section from Tab B to remove Left PG Torsion Spring from the Main Frame.

Tab A

Left PG Torsion Spring

Tab B

Figure 4-51. Removing Left PG Torsion Spring

8. Remove the foot of Right PG Torsion Spring from Tab A, and remove the coil section from Tab B to remove Right PG Torsion Spring from the Main Frame.

Place the feet of Left PG Torsion Spring and Right PG Torsion Spring on the Carriage Shaft.

Left Side

Foot

Right Side

Foot

Figure 4-53. Reinstalling PG Torsion Springs

9. Remove CR Shaft Mounting Plate Fixed Spring from the Tab and Notch on the Main Frame, and draw out the spring in the direction of the arrow.

CR Shaft Mounting P lat e Fi xed S pri ng

Tab

Tab A

Right PG Torsion Spring

Tab B

Notch (rear side)

Notch

Figure 4-54. Removing CR Shaft Mounting Plate Fixed Spring

Insert the foot of CR Shaft Mounting Plate Fixed Spring into

Figure 4-52. Removing Right PG Torsion Spring

the notch on the Main Frame (rear side). See Figure 4-54.

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EPSON Stylus Photo R1800/R2400 Revision B

10. Remove the Extension Spring for the Driven Pulley Holder from the Main Frame and the Tab on the Drive Pulley Holder with needle-nose pliers.

Driven Pulley Holder

Extension Spri ng for the

Driven Pulley Holder

Tabs

Figure 4-55. Removing the Extension Spring for the Driven Pulley Holder

11. Remove the Driven Pulley Holder toward you after sliding it to the right end of the notch on the Main Frame.

12. Remove the CR Drive Belt from the CR Motor Pinion Gear.

CR Drive Belt

CR Motor Pinion Gear

Figure 4-57. Removing the CR Drive Belt

13. Remove the four C.B.S. (P4) M3 x 6 screws that secure the CR Guide Plate, and remove it from the Main Frame.

8) C.B.S. (P4) 3x6 (8±1 kgf.cm)

CR Guide Plate

8) C.B.S. (P4) 3x6 (8±1 kgf.cm)

Driven Pulley

Driven Pulley Holder

Tabs

Figure 4-58. Removing the CR Guide Plate

Figure 4-56. Removing the Driven Pulley Holder

 Align the positioning holes on the CR Guide Plate with

the seven Tabs on the Main Frame. See Figure 4-58.

 Tighten the screws in the order shown in Figure 4-58.

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EPSON Stylus Photo R1800/R2400 Revision B

14. Loosen the C.B.S. (P4) M3 x 8 screw that secures the Left Parallelism Adjust Bushing, and rotate the Bushing toward the front of the Printer Mechanism to prevent interference between the Flag of the Parallelism Adjust Bushing and the Left PG Cam.

Flag of the Parallelism Adjust Bushing (Left)

Left PG Cam

6) C.B.S. (P4) 3x8 (5±1 kgf.cm)

Figure 4-59. Rotating the Left Parallelism Adjust Bushing

15. Slide the Left CR Shaft Mounting Plate upwards, and release the Tab on the Left CR Shaft Mounting Plate from the notch on the Main Frame to rotate the Mounting Plate toward you.

16. Lift the Carriage Shaft upwards, and remove the Carriage Shaft Spacer from the Carriage Shaft with tweezers.

Carriage Shaft Spacer

Carriage

Shaft

Figure 4-61. Removing the Carriage Shaft Spacer

17. Rotate the Left CR Shaft Mounting Plate toward you to remove the Bushing on the Left CR Shaft Mounting Plate from the Carriage Shaft.

Left CR Shaft

Mounting Pl a te

Tab

Left CR Shaft

Mounting Plate

Bushing

Figure 4-62. Removing the Left CR Shaft Mounting Plate

Figure 4-60. Rotating the Left CR Shaft Mounting Plate

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EPSON Stylus Photo R1800/R2400 Revision B

18. Lift the Carriage Shaft within the hole on the Main Frame, and remove the Spacer and Left PG Cam from the Carriage Shaft.

PG Cam (Left)

Hole on Main

Frame

Spacer

Figure 4-63. Removing Left PG Cam

19. Remove the Spacer and Right PG Cam from the Carriage Shaft.

Right PG Cam

Install the Right PG Cam so that one of these positions marked "0", "+" or "++" faces downward.

Figure 4-65. Right PG Cam Installation Direction

20. Pull the Right CR Shaft Mounting Plate away from the Tab on the Main Frame and rotate toward you.

Right CR Shaft Mounting Pl a te

Ribs

Spacer

Figure 4-66. Rotating the Right CR Shaft Mounting Plate

Figure 4-64. Removing Right PG Cam

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EPSON Stylus Photo R1800/R2400 Revision B

Point of

C A U T I O N

When performing the following procedure, take care not to scratch the Carriage Shaft.

21. Slide the Carriage Unit to the left side to prevent the CR Scale Cover from interfering with the rear of the Carriage Unit, slide the Carriage Shaft to the left side and draw out its right end from the Main Frame, and draw out the Carriage Shaft from the Main Frame and Carriage Unit.

Interference

Carriage

Unit

CR Scale Cover

Carria ge Shaft

 Set the longer end of the Carriage Shaft to the left side.  When the Carriage Shaft is removed, the Plain Spring

and Leaf Spring that are attached to the right end of the Carriage Shaft may drop off. In such case, be sure to attach them in the order as shown in the figure below.

Carriage Shaft

Left Side Right

Longer

Leaf Spring

Figure 4-68. Reinstalling the Carriage Shaft

22. Remove the CR Drive Belt from the Carriage Unit.

CR Drive Belt

Plain Spring

Side

Shorter

Carriage Unit

Figure 4-69. Removing the CR Drive Belt

Referring to the figure below, install the CR Drive Belt so that its top and rear sides face the correct way.

Figure 4-67. Removing the Carriage Shaft

With Tooth Surface

Without Tooth Surfac e

Both Surfaces have Tooth

Figure 4-70. Reinstalling the CR Drive Belt

Disassembly And Assembly Disassembly 100

Epson Stylus Photo r1800, Stylus Photo r2400 Service Manuals

Specifications and Main Features

Frequently Asked Questions

User Manual

PRODUCT DESCRIPTION

1.1 Overview

1.2 PG Setting

1.3 Functions

1.3.1 Control Panel

1.3.2 Switches

1.3.4 Switch Functions

1.3.3 Indicators

1.3.5 Indicator Display in Normal Mode

1.3.6 Error Status

1.4 Casing Specifications

1.5 Accessories

OPERATING PRINCIPLES

2.1 Overview

2.2 Printer Mechanism

2.2.1 Carriage Mechanism

2.2.1.1 Carriage Mechanism

2.2.1.2 Carriage Home Position Detection

2.2.1.3 Sequen ce Used for PW Detection

2.2.1.4 APG (Auto PG) Mechanism

2.2.2 Printhead Specifications

2.2.3 Paper Feeding Mechanism

2.2.3.1 ASF Paper Feeding Mechanism

2.2.3.2 Roll Paper Feeding

2.2.3.3 CD-R Tray Base Lock Mechanism

2.2.3.4 CD-R Printing Mechanism

2.2.4 Paper Feeding Mechanism

2.2.4.1 Paper Feeding Mechanism

2.2.4.2 PF Measurement Sequence

2.2.5 Ink System Mechanism

2.2.5.1 Pump Unit

2.2.5.2 Drive Transmission Path to Pump Unit

2.2.5.3 Cap Unit

2.2.6 Ink Sequence

2.2.7 Power-On Sequence

2.3 Electrical Circuit Operating Principles

2.3.1 Power Supply Circuit Operating Principle

2.3.2 C589 MAIN Circuit Operating Principle

TROUBLESHOOTING

3.1 Overview

3.1.1 Troubleshooting according to Panel Messages

3.1.2 Troubleshooting based on Observed Faults

DISASSEMBLY AND ASSEMBLY

4.1 Overview

4.1.1 Precautions

4.1.2 Tools

4.1.3 Screws

4.1.4 Work Completion Checklist

4.2 Disassembly

4.2.1 Removing the Housings

4.2.1.1 Rear Housing

4.2.1.2 Side Housing

4.2.1.4 Upper Housing

4.2.1.5 Lowe r Housing and Pri nter Mechanism

4.2.2 Waste Ink Pad

4.2.3 Front Paper Guide Pad

4.2.4 ASF Assy

4.2.5 Removing the Boards

4.2.5.1 Board Assy

4.2.5.2 LED Board

4.2.6 Disassembling the Printer Mechanism

4.2.6.1 Print Head

4.2.6.2 CR Scale

4.2.6.3 APG Assy

4.2.6.4 Carriage Shaft and Carriage Unit