Epson Perfection 1200U Series User manual

EPSONPerfection1200U(USB)
1200S(SCSI)
Perfection1200PHOTO(USB)
Color Image Scanner
SESC99-006
®


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, 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.
Copyright © 1999 SEIKO EPSON CORPORATION. Printed in Japan.

PRECAUTIONS
Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) 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. NOWORK 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 MANUFACTURE; INTRODUCTION OF
SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON
WARRANTY.
W ARNING
Signals a precaution which, if ignored, could result in
serious or fatal personal injury. Great caution should be
exercised in performing procedures preceded by a
WARNING heading.
CAUTION
Signals a precaution which, if ignored, could result
in damage to equipment.

PREFACE
This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of Perfection1200U/S and
Perfection 1200 PHOTO. 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. The chapters are organized as follows:
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
Provides the step-by-step procedures for troubleshooting.
CHAPTER 4. DISASSEMBLY AND ASSEMBLY
Describes the step-by-step procedures for disassembling and assembling the
product.
CHAPTER 5. FIRMWARE UPDATE
Provides methods for updating the firmware.
CHAPTER 6. MAINTENANCE
Provides preventive maintenance procedures.
APPENDIX
Provides the following addition information for reference:
- Connector Pin Assignments
- Parts lists
- Exploded Diagrams

Revision Status
Revision Issued Date Description
A July 8, 1999 First Release
B September 2, 1999 Chapter 5 has been modified, and parts lists and exploded diagrams
added to Appendix.

EPSON Perfection1200 Revision B
6
Table of Contents
Product Description
Features ......................................................................................................... 9
Product Description...................................................................................... 10
Interface Specification.................................................................................. 12
SCSI Interface......................................................................................... 12
USB Interface.......................................................................................... 14
Control Code ................................................................................................ 15
Exterior Function .......................................................................................... 16
Switch Specification ................................................................................ 16
Indicators................................................................................................. 16
Process when an error happens................................................................... 17
Operating Principles
Engine Mechanism....................................................................................... 19
Carriage Unit ........................................................................................... 19
Carriage Move Mechanism ..................................................................... 20
Power Supply Circuit.................................................................................... 21
Control Circuit............................................................................................... 23
Control Circuit Overview.......................................................................... 23
Troubleshooting
Overview....................................................................................................... 27
Self-Diagnostic Function............................................................................... 27
Troubleshooting............................................................................................ 28
Disassembly and Assembly
Overview....................................................................................................... 32
Precaution............................................................................................... 32
Tools........................................................................................................ 32
Screws..................................................................................................... 32
Disassembly Procedures.............................................................................. 34
Carriage Lock Release............................................................................ 34
Document Cover Removal...................................................................... 35
Upper Cover Removal............................................................................. 36
Inverter Lamp/Inverter Board Removal................................................... 37
Carriage Unit Removal............................................................................ 39
Carriage Motor/Timing Belt Removal...................................................... 44
Main Board Removal............................................................................... 46
Panel Board Removal ............................................................................. 50
Power Supply Board Removal ................................................................ 52
Firmware Update
Firmware Update.......................................................................................... 55
Operating Environment for the
Update Program............................................................................ 55
Installation of the Update Program.......................................................... 55
Updating Method..................................................................................... 55
Maintenance
Overview ...................................................................................................... 59
Cleaning.................................................................................................. 59
Lubrication............................................................................................... 59
Appendix
Overview ...................................................................................................... 61
Interconnection........................................................................................ 61
Connector Assignment............................................................................ 62
Connector................................................................................................ 63
Parts List & Exploded Diagram .................................................................... 65
SCSI Model............................................................................................. 65
USB Model.............................................................................................. 69
TPU; Parts List ............................................................................................. 73
Exploded Diagram for TPU .......................................................................... 74
Optional Part; ADF ....................................................................................... 75

EPSON Perfection1200 Revision B
7
General Description................................................................................. 75
Specification............................................................................................ 75
Interface .................................................................................................. 77
ADF: Disassembly........................................................................................ 78
B81314 Main Board Removal ................................................................. 78
ASF Part.................................................................................................. 79
Disassembling the ASF and Frame......................................................... 84
Disassembly of ASF................................................................................ 86
Parts List of ADF .......................................................................................... 87
ADF Exploded Diagram................................................................................ 90



PRODUCT DESCRIPTION

EPSON Perfection1200 Revision B
Product Description Features 9
1.1 Features
EPSON Perfection 1200 consists of three models: 1200S (SCSI), 1200U
(USB), and 1200PHOTO (USB). Major features are as follows. Perfection
1200PHOTO has the TPU (transparency unit) as standard unit.
MAJOR FEATURES

High quality:

Resolution: 1200 dpi

Gray Scale Levels: 12 bit (12 bit-in, 8 bit-out)

High speed:

Monochrome: 6.5 msec/line

Color: 7.0 msec/line
*High speed mode at 1200 dpi

Command Level: ESC/I (B7)
FS

Option: ADF (same as GT-7000)
Film Adapter (GT-7000 Film Adapter and an
additional 35mm film holder for Instant Photo Print
utility)

Instant Photo Print utility:
(Utility for printing copies of 35mm films and Photo-prints)
Attach the Instant Photo Print utility software.

Start Button: Ease of use with Page Manager
Figure 1-1. Exterior View of Perfection 1200

EPSON Perfection1200 Revision B
Product Description Product Description 10
1.2 Product Description
GENERAL SPECIFICATION

Product Type: Flatbed color image scanner

Sub-scanning method: Movement of the Scanner-Head

Photoelectric device: 6 line alternate color CCD

Maximum Read Area: 8.5 x 11.7 (216 x 297mm)

Maximum effective picture element:
10200 x 14040 pixels (1200 dpi)

Scanning Resolution:

Main 1200 dpi

Sub 2400 dpi with Micro Step

Output resolution: 50 ∼4800 dpi (1 dpi step)

Gray scale levels: 12 bits/pixel (Input 12 bits/pixel, Output 1-8/bits/
pixel)

Color Separation: By the color filter of CCD

Zoom: 50 ∼200% (1% step)

Scanning Speed:

Color: 7.0 msec/line

Monochrome (bi-level): 6.5 msec/line

Command level: ESC/I (B7), FS

Gamma Correction: CRT 2 level (A, B)
PRINTER 3 level (A, B, C)
User defined 1 level

Color Correction: Impact-Dot Printer
Thermal Printer
Ink-Jet Printer
CRT Display
User defined

Brightness: 7 levels

Line Art: Fixed threshold
TET (Text Enhancement Technology)

Digital halftoning: AAS
Error Diffusion 3 modes (A, B, C)
(Bi-level, Quad-level)Dither (Resident) 4 modes (A, B, C)
Dither (User defined) 2 modes (A, B)

Interface (Resident):SCSI (50-pin Half pitch Connectors) x 2pcs
USB (Type-B Receptacle Connector) x 1pc

USB Hosts: All of USB ports work correctly. (The functionality of
the USB port (s) must be ensured by the vendor of the
Host)

Number of Hub: This device must be in the Tier 1 or 2 with
recommended USB cable. (Tier1:Host-this device
Tier2: Host-Hub-this device)

Light Source: White Cold cathode Fluorescent Lamp

Option (same as GT-7000):ADF, Film Adapter

Start button: Ease of use with Page Manager

Operating System: Microsoft Windows 95/98, Window NT4.0/
(SCSI model) Windows2000 will be supported. Macintosh System
7.5 or later
NOTE: It may not be supported Windows 2000 at first release.
(USB model) Microsoft WIndows 98
Micorsoft Windows 2000 will be supported.
NOTE: It may not be supported Windows 2000 at first release.
iMac (Apple System 8.5 or later, AppleSystem8.1
w/Mac Update 1.0)
Power Macintosh G3 (AppleSystem8.5 or later)

EPSON Perfection1200 Revision B
Product Description Product Description 11
ELECTRICAL SPECIFICATIONS

Rated voltage: AC100-120V
AC220-240V

Input voltage: AC 100 -120V ±10%
AC 220 - 240V ±10%

Rated Current : 0.5A (Input AC100V)
0.3A (Input AC200V)

Rated Frequency Range:50-60 Hz

Input Frequency Range:49.5-60.5 Hz

Power consumption: Approx. 25W (Operating)
Approx. 12W (Stand-by)

Insulation resistance: 10 MΩat 500VDC (between AC line and chassis)

Dielectric strength: AC.1.2kV, 1 min (between AC line and chassis)
SAFETY, EMC, EPA

Safety: UL 1950 (UL)
CSA C22.2 NO.950 (CSA)
EN60950 (VDE)
IEC950 (ROSTEST, PSB)

EMC: FCC Part15 Subpart B Class B
CSA C108.8 Class B
AS/NZS3548 Class B
CISPR Pub22 Class B
CNS 1348 Class B

CE Marking:
Low Voltage Directive 73/23/EEC EN60950
EMC Directive 89/336/EEC EN55022 Class B
EN6100-3-2
EN6100-3-3
EN50082-1
IEC801-2/801-3/801-4

EPA: Energy Star Program
RESISTANCE TO ELECTRIC NOISE

Static electricity: panel - 10 kV
metal - 7kV/150 pF, 150Ω
ENVIRONMENTAL CONDITIONS

Temperature:

Operating: 5 °C to 35 °C

Storage: -25 °C to 60 °C

Humidity:

Operating: 10 to 80%, no condensation

Storage: 10 to 85%, no condensation
RELIABILITY

MCBF: 30, 000 cycle
OPERATING CONDITIONS

Dust: Ordinary office or home conditions. Extreme dust
should be avoided.

Illumination: Operation under direct sunlight or near strong light
source is not guaranteed and should be avoided.
DOCUMENT

Reflective type: Documents which has a smooth surface such as a
printing and photograph.

Transparency type (with transparency unit)
Reversal film
Negative film

EPSON Perfection1200 Revision B
Product Description Interface Specification 12
PHYSICAL DIMENSIONS AND WEIGHT

Dimensions: 287(W) x 427(D) x 90(H) mm

Weight: Approx. 4.5 Kg
Figure 1-2. Size
1.3 Interface Specification
1.3.1 SCSI Interface

Basic specifications
Any items not included in this specification shall be in compliance with
ANSI X 3T9.2/375R Revision 10L (SCSI 2)

Function
The following functions are available, which are included in ANSI X3T9.2/
375R Revision 10L (SCSI 2)
Table 1-1. SCSI Interface Function

SCAM (SCSI Configured Auto Magically specification) [X3T9.2/93-
109r5]

Electric specification
Compliant to ANSI X3T9.2/375R Revision 10L (SCSI 2)
Single ended
427m m
90m m
287m m
Function Note
Bus Free Phase
Arbitration phase
Selection /Re-selection phase
Command phase
The LUN (Logical Unit Number) is
fixed at “0” in this device. The
Command Link Function is not
supported.
Data in phase
Data out phase
Status phase
Message in phase
Message out phase
Attention condition
Reset condition

EPSON Perfection1200 Revision B
Product Description Interface Specification 13

Connector: Two 50-pin connectors

Terminator: Internal terminator
Enable to control “active” or “inactive” by a switch.
(SW=ON ----terminator available)

SCSI ID: The SCSI ID is set with a rotary switch on the rear panel.
The switch numbers are corresponded to the available
address and can be set from 0 to 7.
Others are reserved
Factory setting ID=2
Figure 1-3. SCSI Connector Pin Assignment
Table 1-2. SCSI Connector Pin Assignment
50pin connector
Signal I/O Pin No. Specification
GND
1 ∼12
14 ∼ 25
35 ∼37
39, 40, 42
NC 13
DB0 I/O 26 Data Bus 0
DB1 I/O 27 Data Bus 1
DB2 I/O 28 Data Bus 2
DB3 I/O 29 Data Bus 3
DB4 I/O 30 Data Bus 4
DB5 I/O 31 Data Bus 5
DB6 I/O 32 Data Bus 6
DB7 I/O 33 Data Bus 7
DBP I/O 34 Data Bus Parity
TEMPWR 38 Terminator Power
ATN I 41 Attention
BSY I/O 43 Busy
ACK I 44 Acknowledge
RST I 45 Reset
MSG O 46 Message
SEL I/O 47 Select
C/D O 48 Command/Data
REQ O 49 Request
I/O O 50 Input/Output

EPSON Perfection1200 Revision B
Product Description Interface Specification 14
1.3.2 USB Interface

Component: This device supports the following configurations.
Table 1-3. Configurations

Electric specification: Compliant to the high speed (12M bps) mode of
Universal Serial Bus Specification Rev.1.0.

Connector: Receptacle (Series B) (Figure 1-4 and Table1-4)
Figure 1-4. Receptacle (Series B)
Table 1-4. Connector Pin Assignment
Device
Class: Vender-specific
Subclass: Vender-specific
Protocol: Vender-specific
Max. packet size of endpoint 0: 8 byte
Vender ID: 0x04B8
Product ID: 0x0103
No.of component: 1
Component
Supported Interface: 1
Characteristic
• Self power
• Remote wake up function support
Power consumption:2mA
Interface
Endpoint: 2
Class: Vender-specific
Sunglass: Vender-specific
Protocol: Vender-specific
End point 1 Bulk IN transfer
Max. packet size: 64 byte
End point 2 Bulk out transfer
Max. packet size: 64 byte
String descriptor Producer: “EPSON”
Product Name: Scanner Perfection 1200
Pin No. Signal
1VCC
2- Data
3+Data
4GND

EPSON Perfection1200 Revision B
Product Description Control Code 15
1.4 Control Code
The command level is ESC/I-B7 and supported commands are shown below.
Table 1-5. Control Codes
Table 1-6. Control Codes
Category Command Name Code
ExecuteCommand
ID request ESC I
Status request ESC F
Extension status request ESC f
Status setting request ESC S
Read start command ESC G
Push Button Status request ESC !
Expansion ID request FS I
Scanner Status request FS F
Read parameter request FS S
New read start FS G
Data format
setting
Sets Data format ESC D i
Sets resolution rate ESC R n1 n2
Sets zoom rate ESC H i1 i2
Sets the reading range ESC A n1 n2 n3 n4
Sets the color ESC C i
Mirroring ESC K i
Sets reading parameter FS W
Correction process
Set brightness ESC L i
Set Gamma correction ESC Z i
Set Gamma correction table ESC z i d0 d1...d255
Set sharpness ESC Q i
Category Command Name Code
Image process
Set Digital Halftoning ESC B i
Set Auto Area Segmentation ESC s i
Download Dither Pattern ESC b ijd (j2)
Color correction ESC M i
Download Color Correction ESC m df d2...d9
Set Threshold ESC t i
Auxiliary
Set scanning mode ESC g i
Initialize ESC @
Set line counter ESC d i
Control option ESC e i
Eject paper FF
Film type ESC N i
Control
Normal response ACK
Abnormal response NACK
Abort scanning CAN
Header STX

EPSON Perfection1200 Revision B
Product Description Exterior Function 16
1.5 Exterior Function
1.5.1 Switch Specification

OPERATE Switch

Turns the scanner ON/OFF

Pressing this switch at power ON initializes the scanner

PUSH Button
The status of this button can be checked by [ESC !].

SCSI ID switch (rotary type) (only for S[SCSI] model)
0 - 7: SCSI ID (Factory setting ID=2)
Other: Reserved

Terminator Switch (SCSI terminator setting) (only for S[SCSI] model)
ON: Terminator ON, Connects the terminating resistor to the wiring of
SCSI device.
OFF: Terminator OFF, Not connect the terminating resistor to the wiring
of SCSI device.
1.5.2 Indicators

Indicator display

OPERATE (Green LED)
OPERATE switch is ON and power is ON.

READY (Green LED)
*This lamp becomes ON when the command or receiving/sending the
data is available. (During scanning, READY lamp repeats blinking,
according to the data transfer)
*READY lamp blinks with with ERROR LED when an error occurs.

ERROR (Red LED)
This lamp blinks when an error (s) is detected.
Table 1-7. Error Indication
READY LED
(green) ERROR LED (red) Error type
ON ON Command error
OFF Blink Communication
error
OFF Blink Fatal error
Blink Blink Option error

EPSON Perfection1200 Revision B
Product Description Process when an error happens 17
1.6 Process when an error happens

Command error

Cause: Unidentified command or unidentified command
parameter is detected.

Disposition: The scanner ignores the wrong command or parameter.
(Therefore, the current setting or the default value remain
effective.)
Scanner sends NACK, and waits for the next command or
parameter.

Indicator: Red LED ON

Remedy: The error condition is cleared when the scanner receives
a correct command.

Interface error (Communication error)

Cause: Wrong procedure is detected in the interface
communication. In the case of SCSI, a transmission is
frozen more than 30 seconds except BUS FREE phase.

Disposition:The lamp goes off and the scanner stops operation.

Indicator: READY LED Off
ERROR LED (red) blinking (short interval)

Remedy: Turn the scanner off and then back on. RST signal in SCSI
turns active.

Acceptable command : Nothing

Fatal error

Cause: The lamp is broken. Power is turned on before removing
the transportation screw.

Disposition: The lamp goes off and the scanner stops operation.
The bit 7 of the status byte is set.

Indicator: READY LED Off
ERROR LED Blinks

Remedy: Turn the scanner off and then back on. Send ESC@
code to the scanner. RESET signal in SCSI turns active.
Complete BUS DEVICE RESET message in SCSI.

Acceptable command: ESC F, ESC f, ESC @

Option error:
This error occurs by the following causes, when an optional unit is installed
and its operation is available by the optional control command (ESC e).

Cause: Unit cover open
Paper Empty

Disposition:The bit 7 of the status byte is set to “1”

Indicator: READY LED Blink
ERROR LED Blink

Remedy: Remove the error condition

Acceptable command: ESC F, ESC f, ESC @



OPERATINGPRINCIPLES

EPSON Perfection 1200 Revision B
Operating Principles Engine Mechanism 19
2.1 Engine Mechanism
This section explains the engine function and operating principles. Engine can
be divided into Carriage Unit and Carriage Move Mechanism.
2.1.1 Carriage Unit
Carriage unit is mainly composed of CCD sensor board, Inverter board, Lamp
(light source), Mirror and Lens mechanism.
Figure 2-1. Carriage Unit Component

CCD Sensor Board: This board has Color CCD line sensor
(independent R,G,B), and controls it and drives
circuit.

Inverter Board: This board generates voltage to drive the lamp
by pressuring up to the +24VDC and converting it
from direct current to alternating current.

Lamp: White cold fluorescent Lamp is used as light
source. When the light quantity is not stable,
the scanner blinks the Operate light until the
light becomes stable and goes to stand-by mode.

Mirror and Lens Mechanism:The light emitted to the document
reaches the CCD sensor after being
reflected on some mirrors one after
another. Not by changing the light
source to create R/G/B light component
which can be found in the previous
models, Color CCD itself creates each
R/G/B light component.
Figure 2-2. Mirror, Lens Mechanism
Rear
Front
Inverter Board
Lamp
CCD Sensor
Board
CCD Sensor
Front Rear
Scanned image
Mirror2
Mirror4
Document
Lamp
Mirror1 Lens
Mirror3
CCD Sensor
CCD Sensor
Board
B(main)
B(sub)
G(main)
G(sub)
R(main)
R(sub)

EPSON Perfection 1200 Revision B
Operating Principles Engine Mechanism 20
2.1.2 Carriage Move Mechanism
Scanning image is performed in the main scan direction (=1 line) by the CCD
sensor and in the sub-scan direction (=several lines) combined with carriage
unit movement. (See the figure below)
Line type, color CCD sensor can scan 1 line in main scan direction (parallel to
the carriage unit) by one time. When scanning next lines after the second line
in sub-scan direction, CR driving moves the carriage unit, which has CCD
sensor inside, and scan the other lines. The scanned data is sent to the control
board. The scanned data for “n” lines and “n-1” line are processed
consecutively.
Figure 2-3. Carriage Movement
Carriage Unit slides into sub-scan direction along with the guide rail. For this
sliding operation, the carriage motor drives the timing belt attached to the
carriage unit by conveying the driving force through the drive pulley and
reduction gear. Scanning start position is determined by CR HP sensor, which
is located on the control board. Since the stepping motor is used for CR motor,
carriage home position is controlled under the open loop system. (See the
figure below)
Figure 2-4. Carriage Operation
1 pixel Document
MainScan
Direction
Sub-scan Direction by
CR Movement
Second
Line First Line
Scanner Head
(Carriage)
Rear
Front Carriage Unit
Drive Pulley
Timing Belt
CR Motor
Drive Pulley
CR HP
Sensor
Reduction
Gear