Epson Stylus Photo RX640 series User manual

EPSON
StylusPHOTORX640/650
Scanner•Printer•Copier
SERVICE MANUAL
SEMF05003

Notice
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical,
photocopying, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
All efforts 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 contents of this manual are subject to change without notice.
The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION.
General Notice: Other product names used herein are for identification purpose only and may be trademarks or registered trademarks of their
respective owners. EPSON disclaims any and all rights in those marks.
Copyright © 2005 SEIKO EPSON CORPORATION.
I&I CS Quality Promotion Dept.
(Printer Technical Support Grp.)
Imaging & Information Products Div.

PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by
DANGER Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.
2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS
TECHNICIANS IN THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN
THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIES FROM METAL PARTS WITH SHARP EDGES.
5. 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.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON
PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT
BOARDS AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN
ACCESSING INTERNAL COMPONENTS.
5. DO NOT REPLACE IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC OR
OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE
WARRANTY OFFERED BY EPSON.

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:
• Connection with Connectors
• Circuit Boards Component Layout
• 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.
W ARNING
CHECK
P O I N T
C A U T I O N
A D J U S T M E N T
R E Q U I R E D

Revision Status
Revision Date of Issue Description
A December 19, 2005 First Release
B March 8,2006 Error correction
Checkpoint: "Scanner Home Position Adjustment" on page -75:
C April 17,2006 Addition of scanner lubrication point
"Lubrication of SCANNER" on page -81

EPSON Stylus PHOTO RX640/650 Revision A
6
CONTENTS
Chapter 1 Product Description
1.1 Overview .............................................................................................................. 9
1.2 Basic Specifications .......................................................................................... 10
1.2.1 Printer and PC Printing ............................................................................. 10
1.2.2 Scanner ..................................................................................................... 10
1.2.3 Interfaces ................................................................................................... 11
1.2.3.1 USB Interface .................................................................................... 11
1.2.3.2 Infrared Communication Printing Function ...................................... 12
1.2.3.3 Memory Card Slots ........................................................................... 12
1.3 Consumables and Options ............................................................................... 13
1.3.1 Ink Cartridges ........................................................................................... 13
1.4 Common Specifications .................................................................................... 13
1.4.1 Electrical Specifications ........................................................................... 13
1.4.2 Safety Standard/EMC ............................................................................... 14
1.4.3 Other Model-unique Specifications .......................................................... 14
1.4.4 Environment Resistance ........................................................................... 14
1.4.5 Lifetime ..................................................................................................... 14
1.4.6 Noise ......................................................................................................... 14
1.4.7 Weight / Physical Specifications .............................................................. 14
1.4.8 Special Operations .................................................................................... 14
Chapter 2 Operating Principles
2.1 Overview ............................................................................................................ 16
2.1.1 Mechanical Components .......................................................................... 16
2.1.2 Motors and Sensors ................................................................................... 17
2.2 Operating Principles of Electric Circuitry ..................................................... 18
2.2.1 Overview ................................................................................................... 18
2.2.2 Features ..................................................................................................... 18
2.2.3 Circuit Board Constitution ........................................................................ 18
Chapter 3 Troubleshooting
3.1 Overview ............................................................................................................ 20
3.1.1 Specified Tools ......................................................................................... 20
3.1.2 Preliminary Checks ................................................................................... 20
3.1.3 Procedure for Troubleshooting ................................................................. 20
3.2 Troubleshooting When There is Error Display ............................................. 21
3.2.1 Error List ................................................................................................... 21
3.2.2 Warning List ............................................................................................. 23
3.2.3 FATAL Error ............................................................................................ 28
3.3 Troubleshooting When There is No Error Display ....................................... 31
3.3.1 Troubleshooting for Printer ...................................................................... 31
3.3.2 Power Supply Related Troubleshooting ................................................... 35
3.3.3 Ink Supply Related Troubleshooting ........................................................ 35
3.3.4 I/F Related Troubleshooting ..................................................................... 37
3.3.5 Troubleshooting for Scanner .................................................................... 38
3.3.6 Troubleshooting for Motors and Sensors ....................................... 39
Chapter 4 Disassembly and Assembly
4.1 Overview ............................................................................................................ 41
4.1.1 Precautions ................................................................................................ 41
4.1.2 Tools ......................................................................................................... 41
4.1.3 Preparation before Disassembly ............................................................... 41
4.1.4 Disassembly and Reassembly Procedure ................................................. 42
4.2 Removal of Exterior Parts ............................................................................... 43
4.2.1 Panel Assy ................................................................................................ 43
4.2.2 Disassembly of Panel Assy ....................................................................... 44
4.2.3 Scanner Unit ............................................................................................. 45
4.2.4 Main Board ............................................................................................... 46
4.2.5 Middle Housing ........................................................................................ 48
4.2.6 Waste Ink Tray Assy ................................................................................ 50

EPSON Stylus PHOTO RX640/650 Revision A
7
4.2.7 Printhead ................................................................................................... 51
4.2.8 Linear Scale .............................................................................................. 52
4.2.9 Printer Mechanism .................................................................................... 53
4.3 Disassembly of Housing Lower Assy .............................................................. 54
4.3.1 Waste Ink Pads ......................................................................................... 54
4.3.2 Power Supply Board ................................................................................. 54
4.3.3 Stacker Assy ............................................................................................. 55
4.4 Disassembly of Scanner Unit ........................................................................... 57
4.4.1 Scanner Housing ....................................................................................... 57
4.4.2 CCD Unit (Scanner Unit) ......................................................................... 58
4.4.3 HP Sensor (Scanner Unit) ......................................................................... 58
4.4.4 CR Motor Unit .......................................................................................... 58
4.4.5 Disassembly of TPU Unit ......................................................................... 59
4.5 Disassembly and Assembly of Major Parts of Printer .................................. 61
4.5.1 PF Motor, PF Encoder and PF Scale ........................................................ 61
4.5.2 I/S Assy ..................................................................................................... 62
4.5.3 ASF Assy .................................................................................................. 63
4.5.4 APG Assy ................................................................................................. 64
4.5.5 CR Motor .................................................................................................. 65
4.5.6 Carriage Assy ............................................................................................ 66
4.5.7 Eject Frame Assy ...................................................................................... 68
4.5.8 Upper Paper Guides .................................................................................. 69
4.5.9 Paper Guide Front Assy ............................................................................ 70
Chapter 5 Adjustment
5.1 Overview ............................................................................................................ 72
5.1.1 Adjustment by Use of Adjustment Program (TBD) ................................. 72
5.1.2 PG Adjustment .......................................................................................... 73
5.1.3 Scanner Home Position Adjustment ......................................................... 75
5.1.4 Preparations for Use of the Adjustment Program ..................................... 75
5.1.5 Home Position Adjustment Procedure ...................................................... 76
Chapter 6 Maintenance
6.1 Overview ............................................................................................................ 78
6.1.1 Maintenance Error .................................................................................... 78
6.1.2 Cleaning .................................................................................................... 78
6.1.3 Lubrication ................................................................................................ 79
Chapter 7 Appendix
7.1 Connectors ........................................................................................................ 83
7.2 Component Layout ........................................................................................... 85
7.3 Electric Circuit Diagrams ................................................................................ 86
7.4 Exploded Diagrams .......................................................................................... 95
7.5 ASP Reference List ......................................................................................... 102

CHAPTER
1
PRODUCTDESCRIPTION

EPSON Stylus PHOTO RX640/650 Revision A
Product Description Overview 9
1.1 Overview
Realizing 4-in-1 functionality (computer-connected printer or scanner, stand-alone
copy machine, and stand-alone memory card printing), this unit is targeted for both
home/personal use and small office and home office (SOHO) use. Its main functions
are described below.
Printer Functions
As a printer, this unit realizes high-quality printing at high speed on plain paper, higher
light-, water-, and gas-resistance and rub fastness using new Dye-based inks, and
features the following:
Maximum print resolution: 5760 (H) x 1440 (V) dpi
Six color ink cartridges
Borderless printing available using EPSON special media paper.
Reduced noise level
CD-R Printing
ESC/P-R Level-1 commands compliant and printing from RGB data
transmitted by the host available
Scanner Functions
This unit adopts a 3,200 dpi CCD sensor to enable high-quality scanning. LiDTPU is
installed as standard, enabling film scanning in stand-alone mode or via a TWAIN
interface.
Furthermore, Scan to Memory Card function, a function that enables easy conversion
of original images into electronic data in standalone mode, is also installed.
Functions similar to those activated via the scanner’s scan navigation buttons are also
provided within Scan Mode so that the scanned data can be easily transferred to a
connected computer via EPSON SMART PANEL.
Additional features include the following.
Maximum optical resolution 3200 x 6400 dpi
Scan pixel depth 48 bit (input/output)
Stand-alone copy functions
A six-color-Dye-type printer engine is installed to enable photo-quality copying.
In addition to a “0.12-inch (3 mm) bottom margin” for standard use, this unit offers a
lineup of the following copying options.
“Border Free copying”
“Small Margins copying” to provide a minimum margin (0.06-inch or 1.5
mm) around the edges
Printing on CD/DVD labels and jackets
Repeat copying to provide a various types of copying from an original
“2-up and 4-up copying” helpful in minimizing paper waste
“Poster 16” enabling enlargement copying
“Mirror copying” installed to support printing on Iron-On Cool Peel Transfer
Paper
“Photo Stickers printing” to enable printing on photo stickers in photo quality
Memory card print functions
The printer, equipped with a memory card reader function, has a standalone memory
card printing functions. In addition, the following features are also available:
Index Sheet printing supported, whereby images can be selected simply by
marking an Index Sheet. This function makes image selection easier - just by
marking the desired images on the Index Sheet and scanning the sheet.
Together with custom printing functions that set the desired photos by session
such as “Select Print,” “All Photos” and “Range Print,” the editing function
like “Zoom Print” is also provided.
Scan functions
This unit is equipped with the “Scan to Memory Card” function that facilitates the
conversion of a reflective Document to Digital form. Furthermore, functions similar to
those activated via the scanner’s scan navigation buttons are also provided in this mode
to easily perform Scan to PC, Scan to PDF, Scan to E-mail and Scan to Web using
EPSON SMART PANEL.
Film print functions
This unit is capable of scanning and printing films.
Specialty print functions
Multiple special processing features are available in this unit.
Print Image Framer Ver.2 and Ver.3 compliant P.I.F Printing Mode available
“Combo Print”/“Photo Greeting Card” provided, which is helpful in printing
greeting cards or 4 ( 6-inch photos with handwritten text superimposed.
Expanded from the functions existing in Stylus Photo RX700 are “Watermark
printing” - a function to facilitate alignment by printing a faint photo image on
the handwritten area - and character decoration.
“Photo copying” provided, which helps to reprint three 4 x 6-inch photos or
one 5 x 7-inch photo.
“Text input via mobile phone” provided, which uses the incorporated infrared
communication function to combine an image in the memory card and the text
sent by a mobile phone through infrared communications on the template
available in this unit
Simultaneous use of functions
Printer functions and scanner functions are independent and therefore can be operated
simultaneously from a connected computer.
However, note that printing by ESC/P-R commands cannot be operated with scanner
functions simultaneously.

EPSON Stylus PHOTO RX640/650 Revision A
Product Description Basic Specifications 10
1.2 Basic Specifications
1.2.1 Printer and PC Printing
Basic Specifications
Paper Feed Specifications
1.2.2 Scanner
Basic Specifications
*: Gradations (pixel depth): Each pixel has 16-bit input and 1-, 8- or 16-bit output.
Table 1-1. Printer Basic Specifications
Items Specifications
Print method On-demand ink jet
Print heads Black ink: 90 nozzles
Color ink: 90 nozzles x 5 colors
(cyan, magenta, yellow, light cyan, and light magenta)
Print Direction Bi-Directional minimum distance printing (with logic seeking)
Print resolution 5760 x 1440 dpi (max)
Input buffer size 256 K Bytes
Table 1-2. Paper Feed Specifications
Items Specifications
Paper feed method Friction feed using an ASF (Auto Sheet Feeder)
Paper path Top feed, front out
Paper feed rates TBD mm/sec (TBD inches/sec) (when 25.4-mm paper feeds)
296.64 mm/sec (11.6 inches/sec) (when paper feeds in high-speed
continuous mode)
CR interval Programmable in 0.0176 mm (1/1440 inch) steps
Platen print prevention
Printing using a Borderless layout :
Top detection and PW detection implemented for platen print
prevention.
Printing using a layout with borders :
platen print prevention with the paper width of 1st page or 1st
job
Economy printing mode :
no platen print prevention.
Table 1-3. Basic Specifications
Items Specifications
Product type Flatbed color image scanner
Scanning method Fixed document and carriage movement
Sensor Automotive 6 line color CCD with On-Chip Microlens
Maximum scan area 8.5” x 11.7” (216 mm x 297 mm)
Document sizes A4, US Letter
Max. effective pixels 27,200 x 37,440 pixels (3200 dpi)
Resolution
Main scan: 3200 dpi
Sub scan: 6400 dpi with Micro Step drive
50 to 6400 dpi (selectable in 1-dpi steps)
(12800 dpi is achieved by enlarging 6400 dpi by 200 %)
Scanning speed*
3200dpi : Color : Approx. 23 msec
Monochrome : Approx. 23 msec
600dpi : Color : Approx. 4.5 msec
Monochrome : Approx. 4.5 msec
Light source White cold cathode fluorescent lamp
LiD-TPU Scan 35mm film strips with up to six per strip
Scan 35mm film slides with up to four per slide
Built-in 35mm film strip adapter

EPSON Stylus PHOTO RX640/650 Revision A
Product Description Basic Specifications 11
1.2.3 Interfaces
The interfaces this unit is equipped with are as follows:
USB I/F
Mounted on the printer (for connection to a PC)
For printing of data from a USB storage (printing of data from an external
storage device, such as a DSC or CD-R disk or wireless printing by use of the
optional Bluetooth adapter)
Memory card slot (multi-slot)
IrDA (infrared communication with a mobile phone or the like)
1.2.3.1 USB Interface
Main specifications
External Storage Device Connection Port
Recommended cable length: 2 m
Wireless printing is available by installing the optional Bluetooth adapter in the
External Storage Device Connection Port.
Note : Subject to conditions such as obstructions between communication devices, radio wave
condition, magnetic field, static electricity, locations where interferences occur,
software or OS used, receiver sensitivity of communication Devices, and antenna
performance.
CHECK
P O I N T
Detailed information on above-mentioned external storage
devices, Bluetooth adapter and devices compatible with IrDA
(infrared data association) is available on EPSON web site.
Table 1-4. Main specifications
Items Specifications
Standards
“Universal Serial Bus Specifications Revision 2.0”
Printer: “Universal Serial Bus Device Class Definition for
Printing Devices Version 1.1”
Storage: “Universal Serial Bus Mass Storage Class Bulk-Only
Transport Revision 1.0”
Transfer rate 480 Mbps (High Speed Device)
Data format NRZI
Compatible connector USB Series B
Maximum cable length Less than 2 m
Table 1-5. Bluetooth Communication Basic Specifications
Items Specifications
Communication method Bluetooth standard specification Ver. 2.0 + EDR
Output Bluetooth standard specification Power Class 2
Communication distance Approx. 10 m (line-of-sight)
Frequency band used 2.4 GHz band (2.4 GHz to 2.4835 GHz)
Supported profiles
Basic Printing Profile (BPP)
Basic Imaging Profile (BIP)
Object Push Profile (OPP)
Hardcopy Cable Replacement Profile (HCRP)

EPSON Stylus PHOTO RX640/650 Revision A
Product Description Basic Specifications 12
1.2.3.2 Infrared Communication Printing Function
Stylus PHOTO RX640/650 incorporates an infrared communication port on the Main Board.
1.2.3.3 Memory Card Slots
Note 1: For both PC connection and Directing printing, only one type of media is accessible at the same time.
Priority is assigned to each slot, so that if multiple media are inserted into multiple slots at the same time, an accessible slot is determined in the order of priority.
2: In order to select the medium inserted into an invalid slot, the medium in the valid slot needs to be removed.
3: For direct printing: Only the image files in a valid slot are determined to be valid and photo numbers are assigned to only them. The number of images does not change
even if media are inserted into unselected slots.
4: For PC connection (Windows): Only one “removable disk” drive is displayed; and only the medium in a valid slot can be accessed on the “removable disk.” Media inserted in
unselected slots are not accessible.
5: For PC connection (Macintosh): Only the medium in a valid slot is mounted onto the desktop. Media inserted in unselected slots can not be mounted onto the desktop.
6: Slot selection at power on: When power is turned on with media inserted in multiple slots, an accessible slot is determined in accordance with the above order of priority.
7: Slot selection with power turned on: When the medium is removed from the valid slot, the slot of the second highest priority becomes valid (if a medium is inserted there). It is not
necessary to reinsert the medium before it is accessed. If media are not inserted in any of the slots, the valid slot is changed to the slot of the highest
priority (Compact Flash). This is not affected by the order of media insertion in or removal from unselected slots.
Items Specifications
Standards Compliant with the infrared data communication standards (IrDA Ver.1.3 [Low
Power option], etc.)
Communication Speed 9.6 kbit/s-115.2 kbit/s, 0.576 Mbit/s, 1.152 Mbit/s, 4.0 Mbit/s
Communication Distance 0-20 cm (without obstruction), Infrared range is as shown below.
Object Data
JPEG file
vNote file (including support for NTT Docomo image transfer format)
vCard file
vCalendar file
vMessage file
CF Slot
SD/MMC/SM Slot
SM/xD Slot
Infrared receiver
Priority Slots Support Memory Card Standards 備考
1 CF Type II Compact Flash CF+ and CompactFlash Specification Revision 1.4 compliant Only memory cards
Microdrive
2Smart Media/
xD-Picture card Smart Media SmartMedia Standard 2003 compliant Max : 128MB
xD-Picture card xD-Picture Card Specification Version 1.20 compliant * Type M supported Supporting Type M
3Memory Stick
Memory Stick MemoryStick Standard Version 1.3 compliant Max : 128MB
Including the one with memory select function
MagicGate Memory Stick Not supporting any copyright protection function
Memory Stick PRO MemoryStick Standard Memory Stick PRO Format Specifications Version 1.0 compliant Not supporting any copyright protection function
Memory Stick Duo Requiring the adapter
Memory Stick Pro Duo Requiring the adapter
SD/MMC SD SD Memory Card Specifications / PART1. Physical Layer Specification Version 1.0 compliant
MMC MultiMediaCard Standard compliant

EPSON Stylus PHOTO RX640/650 Revision A
Product Description Consumables and Options 13
1.3 Consumables and Options
1.3.1 Ink Cartridges
Note : Ink cartridges cannot be refilled. They are provided as consumable items.
1.4 Common Specifications
1.4.1 Electrical Specifications
Primary power input
Note 1: This product conforms to “Energy Star”.
2: If inactive condition of the printer continues for more than 5 minutes, the status shifts to
the standby status to reduce holding current of the motors.
3: If inactive condition of the scanner continuesfor more than 15 minutes, power supply to
the scan lamp is stopped.
Insulation resistance
Min. 10 MΩ(between AC line and chassis, test voltage of DC 500V)
Dielectric strength
AC 1000 Vrms, 1 minute or AC 1200 Vrms, 1 second
Table 1-1. Ink Cartridges
Items Specifications
Type Each-color separate ink cartridge
Colors Black, Cyan, Magenta, Yellow, Light Cyan, Light Magenta
Storage temperature -20°C to 40°C (Installed) (Within 1 month at 40°C. An acceptable
change in temperature is 45°C or less within this range.)
-30°C to 40°C (Packing storage) (Within 1 month at 40°C)
Dimensions 12.7 mm (W) x 73.46 mm (D) x 55.25 mm (H)
Weight 39 g
CHECK
P O I N T
Ink cartridges whose validity has expired should not be used.
The ink in cartridges freezes if left in a temperature of -16°C or
below. To restore frozen ink to a usable condition, it takes
approximately 3 hours, for example, if it is moved from an
environment at -20°C to an environment at 25°C.
Table 1-2. Primary Power Input
100-120V model 220-240V model
Rated power supply voltage (V AC) 100-120 220-240
Input voltage range (V AC) 90-132 198-264
Rated current (A) 0.6 A (max. 1.0 A) 0.3A (max. 0.5 A)
Rated frequency (Hz) 50 ~ 60
Input frequency range (Hz) 47 ~ 63
Power
consumption (W)
Approx. 22 W
(Standalone copying, ISO10561 Letter Patter, Plain
Paper - A4 Text)
Low-power Mode Approx. 11 W Approx. 11 W
Sleep Mode Approx. 1.5W Approx. 1.5W
Power Off Mode Approx. 0.2 W Approx. 0.3 W

EPSON Stylus PHOTO RX640/650 Revision A
Product Description Common Specifications 14
1.4.2 Safety Standard/EMC
1.4.3 Other Model-unique Specifications
None.
1.4.4 Environment Resistance
*1: When packed for shipping.
*2: No condensation
*3: Under the conditions shown in the chart above
1.4.5 Lifetime
1.4.6 Noise
Noise level : Max 42 dB (During copy, ISO7779)
1.4.7 Weight / Physical Specifications
1.4.8 Special Operations
With Stylus PHOTO RX640/650, the special operation modes described below are
available by turning the power on with the specified buttons held down.
Table 1-3. Safety Standard/EMC
100-120 V version 220-240 V version
Safety standards UL60950
CSA C22.2 No.60950
EMI FCC part15 subpart B class B
CAN/CSA-CEI/IEC CISPR
22 Class B
Safety standards EN 60950
EMC EN 55022(CISPR Pub.22)
class B
EN61000-3-2
EN61000-3-3
EN55024
AS/NZS CISPR22 class B
Table 1-4. Environment Resistance
Temperature 10 ~ 35°C (operation mode *3)
-20 ~ 60°C (non-operation mode *1)
1 month when at 40°C, 120 hour when at 60°C
Humidity 20 ~ 80%, RH (operation mode *2, *3)
5 ~ 85%, RH (non-operation mode *1, *2)
Impact 1 G, 1 x 10-3 seconds (operating)
2 G, 2 x 10-3 seconds (not operating *1)
Vibration 0.15G 10-55Hz(operating)
0.50G 10-55Hz(not operating *1)
Table 1-5. Lifetime
Total print volume 16,000 pages (A4/Letter), or 5 years (the shortest one among these)
Print head lifetime 6 billion shots (per nozzle), or 5 years (the shortest one among these)
Scanner head MCBF 36,000 cycles
Table 1-6. Weight / Physical Specifications
Weight 9.3 kg
External Dimensions 450 mm x 414 mm x 210 mm (Width x Depth x Height, when closed)
450 mm x 492 mm x 288 mm (Width x Depth x Height, in operation)
C A U T I O N
The functions described below, intended for use by service
personnel, must not be opened to users.
Table 1-7. Special Operations
Switches Function
Operation for
Forced Power Off Power + Stop (Press Power SW first, and press
both switches for more than seven
seconds)
Turning the power off forcibly
(processing equivalent to power
down)

CHAPTER
2
OPERATINGPRINCIPLES

EPSON Stylus PHOTO RX640/650 Revision A
Operating Principles Overview 16
2.1 Overview
This Chapter describes the operating principles of the mechanism and electric circuits
of Stylus PHOTO RX640/650.
2.1.1 Mechanical Components
The printer of Stylus PHOTO RX640/650 consists of the following major mechanisms:
The units and circuit boards constituting Stylus PHOTO RX640/650 are as follows:
Figure 2-1. Schematic Printer Mechanism
Table 2-1. Mechanical Components 1
Mechanism Function/Description
CR Assy
Moves on the CR Guide Shaft right and left and performs printing on
paper.
The Carriage Assy incorporates the Printhead, PW Sensor, and CR
Encoder. The power source is the CR Motor.
APG Assy Controls the platen gap in four stages.
Detects the current height of the carriage with the APG Sensor, and
moves the carriage up and down, driven by the PF Motor.
PF Assy Driven by the PF Motor to turn the PF Roller Shaft for feeding paper.
ASF Assy Driven by the PF Motor to load paper into the Printer Mechanism.
Eject Assy
Driven by the PF Motor to eject the paper (CD-R Tray).
As the Stacker is moved up and down (by manual operation), the paper
eject frame moves up and down so that its height can be adjusted to the
media.
I/S Assy Located in the right end of the mechanism, performs capping the
Printhead, while it is not used, and sucking waste ink. The waste ink is
sent to the Waste Ink Tray via the Waste Ink Tube.
Table 2-2. Mechanical Components 2
Unit /Circuit
Board Function/Description
Main Board Located on the Middle Housing, incorporating the USB I/F (for PC),
card reader, and infrared communication function.
Power Supply
Board Located on the Lower Housing. The power cable can be plugged in and unplugged.
Panel Board Consists of two pieces located on the Middle Housing.
USB I/F Board Front USB I/F Board
Scanner Unit Incorporates the film scanner functions.
PF Encoder
CD-R Guide
Sensor
PW Sensor
APG Sensor
CD-R Tray
Sensor
Printhead
PF Motor
PF Roller Shaft
CR Encoder
LD Roller
PE Sensor
CR Assy
ASF Assy
CR Motor
APG Assy
CR Guide
Shaft
Eject Frame
Eject Roller Shaft
I/S Assy
Cap Assy
CR Lock Lever

EPSON Stylus PHOTO RX640/650 Revision A
Operating Principles Overview 17
2.1.2 Motors and Sensors
Figure 2-2. Motors and Sensors (Front Side of Mechanism)
Figure 2-3. Motors and Sensors (Scanner Unit)
Table 2-3. Motors and Sensors (Printer Mechanism)
Name Function
Printhead F3-MACH head (6 colors x 90 nozzles)
CR Motor
Type : DC motor
Voltage : 42V DC ± 5% (voltage applied to the driver)
Characteristics Armature resistance : 24.4Ω± 10%
Inductance : 17.5mH ± 25%
Drive system : PWM system, constant-current chopping system
PF Motor
Type : DC motor
Voltage : 42V DC ± 5% (voltage applied to the driver)
Characteristics Armature resistance : 27.5Ω± 10%
Inductance : 21.45mH (1kHz)
Drive system : PWM system
PE detector Function : Detection of the paper tail end, Paper leading edge positioning
control
Detection method: Transmissive-type photo-interrupter
Ink Cartridge detector CSIC
PTS detector (CR) Type : Linear encoder
Resolution : 1440 pulse/inch
PTS detector (PF) Type : Linear encoder
Resolution : 180 pulses/inch
PW detector
Function : Paper left and right edge (before and during printing)
Paper top edge (before printing)
Paper bottom edge (during printing)
CD-R top, bottom, right and left edges (before printing)
Detection method: Reflective photosensor
APG detector Function : APG position detection
Detection method: Transmissive-type photo-interrupter
CD-R Guide detector Function : CD-R Guide up/down detection
Detection method: Mechanical contact detector
CD-R Tray detector Function : CD-R Tray presence detection
Detection method: Mechanical contact detector
Table 2-4. Motors and Sensors (Scanner Unit)
Name Function
CR Motor Type : 2-phase-200-pole PM type stepping motor Voltage : 42V DC ± 5%
Drive system : Bipolar constant-current driving
HP detector Function : Carriage home position detection
Detection method: Transmissive-type photo-interrupter
APG Sensor
CR Motor
PF Motor
PF Encoder
CD-R Guide Sensor
CD-R Tray Sensor
CR Encoder
PW Sensor
CSIC
PE Sensor
CR Motor
CCD Unit (CR Unit)
CCD Sensor Board
HP Sensor

EPSON Stylus PHOTO RX640/650 Revision A
Operating Principles Operating Principles of Electric Circuitry 18
2.2 Operating Principles of Electric Circuitry
2.2.1 Overview
The major circuit boards of Stylus PHOTO RX640/650 are as follows:
Main Board: C608MAIN
Power Supply Board: C608PSB/C608PSE
Panel Board: C608PNL and C608PNL-B
CCD Unit Board (Scanner): C608ISN
USB I/F Board : I/F Board Assembly
2.2.2 Features
High-Speed SPC is realized without HUB, thanks to employment of USB 2.0
multi-end point.
An SOC incorporating the printer controller, scanner controller, PT controller
and CPU Super Macro is realized.
Only one CPU (SH2A by RENESAS) controls the printer, scanner and PT
section.
Equipped with one 64-Mbit Flash ROM (with 16-bit bus width) and one 32-
Mbit Flash ROM (with 16-bit bus width).
(Flash ROM or MASK ROM is mounted)
Equipped with one 256-Mbit SDRAM (16-bit bus width) for ASIC local
buses, and one 256-Mbit SDRAM (16-bit bus width) for CPU bus.
Low cost of logic power supply and motor drive is realized by employment of
motor drivers with built-in power supply.
The band width is ensured by setting the operating frequency of the local
SDRAM of SOC at 96 MHz.
High-speed processing is ensured because all the processing from scanning to
binarization, Microweave, and image buffer generation is carried out inside
the SOC, without via the CPU bus.
The size of the MW buffer is reduced to 1/3 of the conventional size by
employment of UBEC (Ultra Block Encode).
Equipped with a color LCD (2.5-inch low-temperature poly-silicon TFT
liquid crystal) as a standard feature.
Power consumption is suppressed by executing the following actions at
transition to the power save mode.
•Lowering the supply voltage for main power
•Cutting off the photo-electric current of the photo sensor
•Stopping the motor drive circuit
•Stopping the UDL clock inside the ASIC
•Entering the CPU core low consumption mode
•High efficiency power supply circuit
•Stopping excitation of the printer motor
•Stopping the head drive circuit
•Turning off the CCD scanner power supply and stopping the excitation of the
scanner motor
•Turning off the preview monitor
2.2.3 Circuit Board Constitution
Table 2-5. Circuit Board Constitution
Circuit Board Description
Main
Board
System section
Logic circuits (ASIC incorporated in the CPU core, Flash ROM
x 2, and SDRAM x 2)
Interface circuit (USB 2.0, USB 1.1 Host)
RTC circuit
Color LCD interface
Panel interface
IrDA circuit
Power Supply
section
Regulator circuit
Power switch circuit
Overvoltage protection circuit
Printer section
Motor control and drive circuits (PF, CR)
Head control and drive circuit
Sensor circuits (PE, PF, PW, APG, CDR 1 and 2)
Card ASIC section Logic circuit (ASIC)
Card power supply control circuit
Scanner section
Scanner interface circuit
Motor control and drive circuit (Scanner)
Scanner HP detection interface circuit
TPU interface circuit
Panel Board
Power switch circuit
Switching circuit
LED circuit
ISN Board CCD control and A/D conversion circuit
Optical sensor circuit
LCD Board
LCD control circuit
LCD module
SDRAM

CHAPTER
3
TROUBLESHOOTING

EPSON Stylus PHOTO RX640/650 Revision A
Troubleshooting Overview 20
3.1 Overview
With Stylus PHOTO RX640/650, almost all troubles can be coped with by following
the instructions given on “EPSON Status Monitor 3” (when connected to the PC) or on
the LCD.
Once an error occurs, the “EPSON Status Monitor 3” will appear as a pop-up window
on the screen of the host PC. It will show details of how to cope with the trouble. In
almost all cases, the user can recover the unit from the error, provided that the user
follows the instructions indicated on the pop-up window.
In addition, the User's Manual for EPSON Stylus PHOTO RX640/650 describes
detailed steps to be taken for recovery from typical errors.
3.1.1 Specified Tools
Stylus PHOTO RX640/650 does not require any specified tools for troubleshooting.
3.1.2 Preliminary Checks
Before starting troubleshooting, be sure to verify that the following conditions are all
met:
The power supply voltage must be within the specification limits. (Measure
the voltage at the wall outlet.)
The POWER CORD must be free from damage, short circuit or breakage, or
miswiring in the POWER CORD.
The Unit must be grounded properly.
The Unit should not be located in a place where it can be exposed to too high
or low temperature, too high or low humidity, or abrupt temperature change.
The Unit should not be located near waterworks, near humidifiers, near
heaters or near flames, in a dusty atmosphere or in a place where the Unit can
be exposed to blast from an air conditioner.
The Unit should not be located in a place where volatile or inflammable gases
are produced.
The Unit should not be located in a place where it can be exposed to direct
rays of the sun.
The Unit must be placed on a strong and steady level table (without an
inclination larger than 5 degrees).
There must be no vibration generating source placed in contact with this Unit.
The paper used must conform to the specification.
There must be no error in handling of the Unit.
Check the inside of the Unit, and remove foreign matters, if any, such as paper
clips, staples, bits of paper, paper dust or toner.
Clean the inside of the Unit and the rubber rolls.
3.1.3 Procedure for Troubleshooting
Perform troubleshooting according to the flowchart shown at below.
Flowchart 3-1. Procedure for Troubleshooting
Perform “3.1.2 Preliminary
Checks (p.20)”.
Does the error recur? No Problem solved
Yes
Is there any error
display? Yes
No
By referring to “3.2
Troubleshooting When There is
Error Display (p.21)”, identify
the error and repair it.
(Also refer to “Troubleshooting”
Troubleshooting for Printer (p.31)
Ink Supply Related Troubleshooting (p.35)
I/F Related Troubleshooting (p.37)
Troubleshooting for Scanner (p.38)
Power Supply Related Troubleshooting (p.35)
START
To Troubleshooting for
Individual Units