All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical,
photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
The contents of this manual are subject to change without notice.
All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being
informed of them.
The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
General Notice:Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their
respective owners. EPSON disclaims any and all rights in those marks.
Precautionary notations throughout the text are categorized relative to 1) Personal injury and 2) damage to equipment.
DANGERSignals 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.
WARNINGSignals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER
1.ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR
PROCEDURES.
2.NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS
TECHNICIANS IN THEIR LINE OF WORK.
3.WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO
SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC
COMPONENTS.
4.WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.
WARNING
1.REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2.MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE
EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3.ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED
CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4.IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST
STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.
5.REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR
OTHER NON-APPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.
6.WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH
PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.
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About This Manual
A D J U S T M E N T
R E Q U I R E D
C A U T I O N
C H E C K
P O I N T
W A R N I N G
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 Epsonapproved lubricants and adhesives required for servicing the product.
APPENDIX Provides the following additional information for reference:
• Exploded Diagram
• Parts List
Symbols Used in this Manual
Various symbols are used throughout this manual either to provide additional
information on a specific topic or to warn of possible danger present during a
procedure or an action. Be aware of all symbols when they are used, and always read
NOTE, CAUTION, or WARNING messages.
Indicates an operating or maintenance procedure, practice or condition
that is necessary to keep the product’s quality.
Indicates an operating or maintenance procedure, practice, or condition
that, if not strictly observed, could result in damage to, or destruction of,
equipment.
May indicate an operating or maintenance procedure, practice or
condition that is necessary to accomplish a task efficiently. It may also
provide additional information that is related to a specific subject, or
comment on the results achieved through a previous action.
Indicates an operating or maintenance procedure, practice or condition
that, if not strictly observed, could result in injury or loss of life.
Indicates that a particular task must be carried out according to a certain
standard after disassembly and before re-assembly, otherwise the quality of the components in question may be adversely affected.
Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50Revision C
Paper Support & Stacker are Closed
Paper Support & Stacker are Opened
Epson Stylus Photo R280/R285/R290
Epson Artisan 50/
Epson Stylus Photo T50/T59/T60/P50
Epson Stylus Photo R280/R285/R290
Epson Artisan 50/
Epson Stylus Photo T50/T59/T60/P50
1.1 Features
Epson Stylus Photo R280/R285/R290 and Epson Artisan 50/Epson Stylus Photo T50/
T59/T60/P50 are single-function color ink-jet printers.
The main features are;
High speed & High quality
Maximum print resolution: 5760 (H) x 1440 (V) dpi
Newly developed F3 Mach Turbo II print head achieves higher print speed
than ever.
Six independent dye-ink cartridges enables high-resolution photo printing.
CD and DVD label printing are supported.
Borderless printing on specified EPSON brand paper is available.
Control panel
Simple design with three buttons and three indicators (LED).
Dimensions and weight
Table 1-1. Dimensions and weight
Model
Epson Stylus Photo R280/
Epson Artisan 50/Epson Stylus
Note *1: Paper support and stacker are closed. Rubber feet are included.
R285/R290
Photo T50/T59/T60/P50
*2: Without ink cartridges
Dimensions (W x D x H) mm
450 x 282 x 1875.4 kg
450 x 289 x 1875.5 kg
*1
Weight
*2
Figure 1-1. External View
Chapter 1 Product Description1.1 Features9
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Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50Revision C
1.2.4 Supported Paper
The table below lists the paper type and sizes supported by the printer. The supported paper type and sizes vary depending on destinations (between EAI, EUR, and Asia)
Table 1-7. Supported Paper
Paper NamePaper Size
Legal215.9 x 355.6 mm (8.5”x14”)
Letter215.9 x 279.4 mm (8.5”x11”)Y-Y-Y-
A4210 x 297 mm (8.3”x11.7”)Y-Y-Y-
B5182 x 257 mm (7.2”x10.1”)--Y-Y-
Plain paper
Premium Inkjet Plain PaperA4210 x 297 mm (8.3”x11.7”)0.118021--Y-Y-
Premium Bright White Paper (EAI)
Bright White Inkjet Paper (others)A4210 x 297 mm (8.3”x11.7”)0.1392.525--Y-Y-
Ultra Premium Photo Paper Glossy (EAI)
Ultra Glossy Photo Paper (others)
Premium Photo Paper Glossy (EAI)
Premium Glossy Photo Paper (others)
Photo Paper Glossy (EAI)
Glossy Photo Paper (others)
A5148 x 210 mm (5.8”x8.3”)--Y-Y-
Half Letter139.7 x 215.9 mm (5.5”x8.5”)Y-----
A6105 x 148 mm (4.1”x5.8”)Y-Y-Y-
User Defined
89 x 127- 329 x 1117.6 mm
(3.56”x 5.08” - 13.16”x44.7”)
Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50Revision C
C A U T I O N
Print Area
LMRM
TM
BM
BM
Cut Sheet (Standard)
Cut Sheet (Borderless)
Paper Size
LM
RM
TM
BM
Print Area
LMRM
Print Area
Envelope
Paper Size
TM
Paper Feed Direction
Make sure the paper is not wrinkled, fluffed, torn, or folded.
The curve of paper must be 5 mm or below.
When printing on an envelope, be sure the flap is folded neatly.
Do not use the adhesive envelopes.
Do not use double envelopes and cellophane window envelopes.
1.2.5 Printing Area
The printing area for this printer is shown below.
Table 1-8. Printing Area (Margins)
Print ModePaper Size
LeftRightTopBottom
Standard printAny size3 mm3 mm3 mm3 mm
Envelope5 mm5 mm3 mm20 mm
Borderless
print
A4/Letter to
5” x 7”
2.54 mm*2.54 mm*
4” x 6”1.34 mm*2.54 mm*
Card1.83mm*1.83mm*2.54mm*3.53mm*
Note * :The margins for Borderless print are margins that bleed off the edges of paper.
GB9254 Class B, GB17625.1
ArgentinaIEC60950-1
AustraliaAS/NZS CISPR22 Class B
Hong KongIEC60950-1
*
*
NOTE * :
Epson Stylus Photo R280/R285/R290 only
Chapter 1 Product Description1.4 General Specifications18
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Power ButtonPaper ButtonInk Button
Power LEDPaper LEDInk LED
Power ButtonPaper ButtonInk Button
Power LED
Paper LED
Ink LED
Epson Stylus Photo
R280/R285/R290
Epson Artisan 50/Epson Stylus
Photo T50/T59/T60/P50
1.5 Operation Buttons & Indicators (LEDs)
1.5.1 Operation Buttons
The printer has the following three operation buttons.
Table 1-13. Operation Buttons
ButtonFunction
PowerTurns the power ON/OFF.
InkRuns a sequence of ink cartridge replacement or cleaning.
PaperFeeds or ejects paper.
1.5.2 Indicators (LEDs)
Three indicators (LEDs) are provided to indicate settings or printer status.
Table 1-14. Indicators (LEDs)
LEDFunction
Lights at power-on.
Power LED(green)
Ink LED (orange)*
Paper LED (orange)*
Note *1:The Ink LED and Paper LED stay OFF when printing from PC.
*2:See Table 1-17 “Indicators (LEDs) Function” for the LED status at error occurrence.
1
Flashes during some sequence is in progress.
Flashes at high speed during power-OFF sequence.
Lights or flashes when an ink-related error occurs.*
1
Lights or flashes when an paper- or CD-R-related error occurs.*
1.5.3 Operation Buttons & LEDs Functions
Detailed information on the buttons and LEDs functions are listed below.
Table 1-15. Operation Button Functions (During Normal Operation)
ButtonFunction
Power• Turns the power ON/OFF
• Runs a sequence of ink cartridge replacement. The carriage
moves to set the ink cartridge to the position for
replacement.
• Moves the carriage to set the ink cartridge to the ink check
position when ink level low, ink out, or no ink cartridge
Ink
2
2
Paper
Ink
(when held for three seconds
or longer)
Power + Paper *
(combination)
Power + Ink *
(combination)
Note 1: First press the Paper button and then Power button. The printer will turn On and print
the nozzle check pattern.
2: First press the Power button and then Ink button. Hold them for seven seconds.
1
2
error has occurred.
• When an ink cartridge has been set in the ink check
position, moves the carriage to set the cartridge to the
position for replacement, or to set another cartridge to the
ink check position.
• When an ink cartridge has been set in the ink replacement
position, moves the carriage to the home position.
• Feeds or ejects paper.
• Recovers from a multi-feed error and feeds paper to restart
the print job.
• Feeds paper when paper is loaded after a no-paper error
occurs.
• Ejects a jammed paper when a paper jam error occurs.
• Cancels the print job during printing.
• Runs a head cleaning.
• Runs a sequence of ink cartridge replacement when ink
level low, ink out, or no ink cartridge error has occurred.
Flash at high speed: Repeats turning On and Off every 0.5 seconds.
Flashes alternately 1: same as the “Flash”
Flashes alternately 2: Repeats turning Off and On every 1.25 seconds.
Repeats On for 1.25 seconds, Off for 1.25 seconds,
On for 0.5 seconds, and Off for 1.0 second.
Note *1: When two or more errors occur at the same time, the one with higher priority will be
indicated.
*2: The all LEDs light for 0.2 seconds when a reset request is received.
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1.5.4 Errors & Remedies
Table 1-18. Errors & Remedies
ErrorErrorRemedies
Fatal errorA mechanical error has occurred.Turn the power Off and back it On.
Maintenance
request
CD-R guide error
Paper jam
No paper
Multi-feed
CD-R Tray error
Ink-outThe cartridge has run out of ink.Replace the ink cartridge.
No ink cartridge
Wrong ink
cartridge
Note :For more information on the remedies, see 3.2 Error Indications and Fault
Occurrence Causes.
Note *1: When the CD-R guide (stacker) is attached to the upper position (CD-R print
position), attach the guide to the lower position and press the Paper button.
*2: When the CD-R tray has been inserted, remove the CD-R tray and press the Ink
button.
Waste ink pads need to be
replaced.
• The CD-R guide (stacker)
position does not match with
Replace the waste ink pads and
reset the counter.
Attach the CD-R guide (stacker) to
the proper position.
the print job.
• The CD-R guide (stacker) is in
the CD-R printing position at
power-ON.
A paper jam has occurred.<When printing on paper>
Remove the jammed paper and
press the Paper button.*
1
<When printing on CD-R>
Remove the jammed CD-R tray
and press the Paper button.
Failed to feed paper.Load paper correctly and press the
1
1
Multiple sheets of paper were fed
at the same time.
Paper button.*
Press the Paper button to eject the
multiple sheets.*
A CD-R tray were not detected.Insert the CD-R tray and press the
Paper button.
*2
Ink cartridge(s) was not detected.Replace the ink cartridge.
Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50Revision C
PF Encoder SensorAPG Sensor
ASF Unit
CR Motor
PF Motor
LD Roller
CR Encoder
Sensor
PE Sensor
PF Roller Shaft
APG Unit
Ink System
CR Lock Lever
EJ Roller Shaft
PW Sensor
Cap ASSY
CR Shaft
CDR Guide
Sensor
Printhead
CR Unit
EJ Frame
CDR Tray
Sensor
2.1 Overview
This chapter describes the operating principles of the printer mechanism and electric
circuit boards of Stylus Photo R280/R285/R290 and Epson Artisan 50/Epson Stylus
Photo T50/T59/T60/P50.
2.1.1 Printer Mechanism
The main components of the printer mechanism are shown in the table below.
Table 2-1. Printer Mechanism Main Components
ComponentFunction
CR Unit
APG Unit
PF UnitRotates the PF roller shaft to feed paper being powered by the PF motor.
ASF Unit
EJ Unit
Ink System
The main control boards are shown in the table below.
Main Board
Power Supply Board
(P/S ASSY)
Panel BoardLocated inside the Panel Unit and controls the operation panel.
Chapter 2 Operating Principles2.1 Overview23
Moves along the CR shaft to print on paper being powered by the CR motor.
The unit includes Printhead, PW sensor, and CR encoder sensor.
Moves the carriage upward/downward to adjust the platen gap being powered by
the PF motor. There are 4 preset levels of platen gap and the unit moves the
carriage to one of the levels according to the current carriage position detected by
the APG sensor.
Being powered by the PF motor, feeds paper loaded on the ASF into the printer
mechanism.
Being powered by the PF motor, ejects paper or the CDR tray.
The EJ frame moves corresponding to the stacker position so that the frame
matches with the paper size.
Located on the right side of the printer mechanism. Covers the printhead with the
cap holder when the printhead is not used, and draws waste ink out of the
printhead. The waste ink is sent to the Waste Ink Tray through the waste ink tube.
Table 2-2. Main Control Boards
BoardFunction
Located on top of the printer mechanism and controls all over the
printer operations.
Located on the Lower Housing and generates required voltages for the
printer using the power supplied from the AC power line.
Cover Open
Cover Open
Sensor
Sensor
Figure 2-1. Printer Mechanism Diagram
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APG Sensor
CR Motor
PF Motor
PF Encoder Sensor
CDR Tray Sensor
CR Encoder Sensor
PE Sensor
PW Sensor
Cover Open Sensor
CDR Guide Sensor
CR Contact Module
2.1.2 Motors & Sensors
No.Motor/Sensor NameFunction
1PrintheadF3-MACH Turbo2 head (6 colors x 90 nozzles)
2CR motor
3PF motor
4PE sensor
5CR Contact moduleInk cartridge detection (CSIC)
6CR Encoder sensor
7PF Encoder sensor
8PW sensor
9APG sensor
10CDR Guide sensor
11CDR Tray sensor
12Cover Open sensor
Table 2-3. List of Motors & Sensors
Type: DC motor
Drive voltage: 42V DC
Ω± 10%
Ω ± 10%
Coil resistance: 22.7
Inductance: 17.5mH ± 25%
Drive method: PWM constant-current chopping
Type: DC motor
Drive voltage: 42V DC
Coil resistance: 21.2
Inductance: 17.2mH (1 kHz)
Drive method: PWM
Detecting items: paper end, leading edge of paper
Type: Transmissive photo interrupter
Type: Transmissive photo interrupter
Resolution: 180 pulse/inch
Type: Transmissive photo interrupter
Resolution: 180 pulse/inch
Detecting items:
• Left/right edges of paper (before/during printing)
• Top edge of paper (before printing)
• Bottom edge of paper (during printing)
• Left/right/top/bottom of CDR (before printing)
Type: Reflective photo interrupter
Detecting items: APG position
Type: Transmissive photo interrupter
Detecting items: Up/Down status of the CDR Guide
Type: Mechanical contact
Detecting items: Presence of CDR tray
Type: Mechanical contact
Detecting items: Open/Close status of the Printer Cover
Type: Mechanical contact
± 5% (voltage applied to the driver)
± 5% (voltage applied to the driver)
Figure 2-2. Motors & Sensors in the Printer Mechanism
Chapter 2 Operating Principles2.1 Overview24
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A D J U S T M E N T
R E Q U I R E D
2.2 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP)
Overview
In order to ensure high print quality and high print speed, this product incorporates the Banding Reduction System (BRS) and Paper Feed Profile (PFP) Correction system. The
overview of them is described in the table below.
Table 2-4. Overview of BRS and PFP
Target Print Mode
4 x 6 inch
(102 x 152 mm)
4 x 6 inch
(102 x 152 mm)
Remarks
720 x 720---
720 x 720With BRS, Borderless print
720 x 360
Without BRS,
Borderless print
BRS
PFP
Summary
Conventional models perform overlapping printing (2-path or 4path print) to reduce banding problem. Printers that incorporate the
Banding Reducing System do not perform the overlapping printing.
They carry out 1-path printing correcting ink drop amount for each
raster mode in order to avoid making a gap between each path
(printed line). This enables to achieve both high print quality (less
banding) and high print speed.
In the conventional method to improve paper feed accuracy, the
adjustment value is calculated based on a value obtained at a
certain point of paper. Therefore, correcting the total paper feed
amount (from when paper is fed and to when finishing printing)
was impossible. The Paper Feed Amount Profile Correction offers
more precise control over the paper feeding. Paper feed errors are
measured at various points and a correction value is calculated for
each of the points. This enables to ensure print quality in the target
print mode.
Paper TypePaper SizeResolutions (dpi)
Ultra Glossy Photo Paper
Premium Glossy Photo Paper
Glossy Photo Paper
Premium Semigloss Photo Paper
Ultra Glossy Photo Paper
Premium Glossy Photo Paper
Glossy Photo Paper
Premium Semigloss Photo Paper
Adjustment/Correction method
Correction values of the BRS and the PFP are automatically calculated when a pattern printed by the printer is scanned by a specified scanner. The created correction
values are stored into the serial flash ROM on the main board, and applied when printing in the target print mode.
For information on how to carry out the BRS and PFP,
See Chapter 5 Adjustment.
Chapter 2 Operating Principles2.2 Banding Reduction System (BRS) / Paper Feed Amount Profile Correction (PFP)25
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CR lockCR
CR lock
is released
2.3 Power-On Sequence
This section describes the power-on sequences.
Condition
Completing ink charge.
No CDR Tray and no paper on the paper path.
The stacker is not set on the CDR printing position.
The Printhead is capped with the Cap of the Ink System.
The Carriage is locked by the CR lock.
Table 2-5. Operation of the power-on sequence
Operation
1. Checking waste ink overflow
1-1.Reads out the protection counter value to check
waste ink overflow
2. Avoiding deadlock sequence
2-1.The carriage moves to the 0-digit side slowly and
confirms it touches the Right Frame.
2-2.The carriage slightly moves to the 80-digit side.
2-3.The PF Motor rotates clockwise and releases the
CR lock.
2-4.The carriage moves to the 0-digit side slowly and
confirms it touches the Right Frame.
2-5.The carriage returns to its home position.
3. CDR Tray sensor
3-1.Checks with the CDR Tray sensor if the CDR
Tray is not set.
3-2.The PF Motor rotates clockwise to eject the CDR
Tray.
*1
movement and position
*4
Carriage/PF roller
*2
*3
PG
Any
position
↓
↓
↓
↓
↓
↓
↓
Table 2-5. Operation of the power-on sequence
Operation
4. Releasing the CR lock
4-1.The PF Motor rotates clockwise and releases the
CR lock.
5. Seeking the home position
5-1.The carriage slowly moves to the 80-digit side.
5-2.The carriage moves to the 0-digit side slowly and
confirms it touches the Right Frame.
5-3.The carriage slowly moves to the CR lock set
position.
5-4.The PF motor rotates clockwise and releases the
CR lock.
5-5.The PF motor rotates counterclockwise and sets
the CR lock.
5-6.The carriage moves to the 80-digit side slowly and
confirms it touches the CR lock.
5-7.The carriage slowly moves to the 0-digit side to
the CR lock set position.
5-8.The PF motor rotates clockwise and releases the
CR lock.
5-9.The carriage moves to the 80-digit side slowly and
confirms it does not touch the CR lock.
5-10.The carriage slowly moves to its original
position, and home position is fixed.
Afterward, the carriage position is monitored
according to the signals from the CR Encoder.
6. Resetting APG
6-1.The carriage slowly moves to the Right Frame and
Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50Revision C
Table 2-5. Operation of the power-on sequence
Operation
13.Detecting ink cartridge and initializing ink system
13-1.The PF motor rotates clockwise and releases the
CR lock.
13-2.The PF Motor rotates clockwise for one second,
and resets the PF Roller.
13-3.The carriage slowly moves to the 0-digit side.
13-4.After the carriage moves to the 80-digit side and
checks the ink end sensor, detects the ink
remaining.
13-5.The carriage slowly returns to its home position.
14.CR lock setting
14-1.The carriage slowly moves to the CR lock set
position.
14-2.The PF Motor rotates counterclockwise, and sets
the CR lock.
14-3.The carriage slowly returns to its home position.
Note *1: The rotation direction of the PF Motor is as follows.
Clockwise:Paper is fed normally
Counterclockwise: Paper is fed backward
*2: The condition of the CR lock is as follows.
Red:CR lock is set
White: CR lock is released
*3: Indicates the PG position. “Any position” means that the PG position is not
recognized because APG is not reset yet.
*4:Checks if the carriage is not deadlock such as the CR lock is caught in the gap of the carriage.
*5: Eject the paper if any.
*6: When paper exists, the existing measurement value saved in EEPROM is read out;
therefore, the PF Motor does not rotate.
*7:Executes when the detected temperature is under 5 oC (41oF) by the thermistor on the Printhead.
*8: The empty sanction operation may occur depending on the situation.
*9:If paper remains in the printer, the PF Roller rotates by steps enough to eject the paper forcibly.
*1
*9
Carriage/PF roller
movement and position
*8
2.4 Printer Initialization
*3
PG
*2
↓
↓
PG--
↓
↓
↓
↓
↓
There are four kinds of initialization method, and the following explains each
initialization
1.Hardware initialization
This printer is initialized when turning the printer power on, or printer recognized
the cold-reset command (remote RS command).
When printer is initialized, the following actions are performed.
(a) Initializes printer mechanism
(b) Clears input data buffer
(c) Clears print buffer
(d) Sets default values
2.Operator initialization
Initialization when resetting the USB software, and the following are performed.
(a) Clears input data buffer
(b) Clears print buffer
(c) Sets default values
3.Software initialization
The ESC@ command also initialize the printer.
When printer is initialized, the following actions are performed.
(a) Clears print buffer
(b) Sets default values
4.IEEE 1284.4 “rs” command initialization
The printer recognized the IEEE 1284.4 “rs” command.
When printer is initialized, the following action is performed.
Epson Stylus Photo R280/R285/R290/Epson Artisan 50/Epson Stylus Photo T50/T59/T60/P50Revision C
Start
Identifying the error cause by the error
message or observed symptom.
Repair or replacement of
parts or components
Reassembly and adjustment
End
3.1 Overview
This chapter provides how to troubleshoot problems analyzing the cause based on the
messages shown by the printer driver, printer’s LED status and the observed symptom.
Identify and troubleshoot the problem referring to the tables on the following pages.
When some parts need to be replaced, make sure to follow the procedure given in
Chapter 4 and carry out required adjustments. If any abnormality is observed in motors
or sensors, check the electrical value referring to the 3.1.1 “Troubleshooting on Motors
and Sensors”(p.30).
3.1.1 Troubleshooting on Motors and Sensors
The following tables show the normal electric values of each motor and sensor. When
any abnormality is observed in motors and sensors, check their electric values and
compare them with the values given in the tables to see if the motors or sensors are
broken or not.
Table 3-1. Motor Resistance & Measuring Points
MotorMotor ConnectorMeasuring PointsResistance
CR Motor
PF Motor
SensorSensor ConnectorSignal LevelStatus
PE Sensor
APG Sensor
CDR Guide Sensor
CN14Between Pin 1 and 222.7Ω ±10%
CN13Between Pin 1 and 221.2Ω ±10%
Table 3-2. Sensor Checkpoints
CN6
Between Pin 1 and 2
CN7
Between Pin 1 and 2
CN4
Between Pin 1 and 2
2.4V or moreNo paper
0.4V or lessPaper exists
2.4V or moreWithin PG position
0.4V or lessOut of PG position
CDR mode
Open: 2.4V or more
Close: 0.4V or less
(Stacker is at the upper
position)
ASF mode
(Stacker is at the lower
position)
Figure 3-1. Troubleshooting Flowchart
CD-R Tray Sensor
Cover OPEN Sensor
Note : See 2.1.2 “ Motors & Sensors ”(p.24) for locations of the motors and sensors.
CN4
Between Pin 3 and 4
CN17
Between Pin 1 and 2
Open: 2.4V or moreCD-R Tray inserted
Close: 0.4V or lessNo CD-R Tray
Open: 2.4V or morePrinter Cover opened
Close: 0.4V or lessPrinter Cover closed
Chapter 3 Troubleshooting3.1 Overview30
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