Canon CANOSCAN D660U User manual

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
JULY 2000 JY8-1318-00Z
REVISION 0
SERVICE
MANUAL

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
COPYRIGHT © 2000 CANON INC.
Printed in Japan
Imprimè au Japon
Use of this manual should be strictly supervised
to avoid disclosure of confidential information.

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
F91-4811-100 JPN AZM000001-
F91-4821-100 MLC MZM000001-
F91-4831-100 CCSI CZM000001-
F91-4841-100 EUR DZM000001-
F91-4851-100 UK EZM000001-
F91-4861-100 CA FZM000001-
F91-4871-100 CAN/CLA LZM000001-
F91-4881-100 SPL/CLA JZM000001-
F91-4889-100 ARGENTINA RZM000001-
F91-4891-100 HK/KOR KZM000001-
LIST OF SERIAL NUMBER
Order No. Destination Serial No.

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
PREFACE
This service manual contains the basic information necessary for servicing CanoScan D660U
image scanner.
The service manual consists of the following chapters.
CHAPTER 1 : GENERAL DESCRIPTIONS
Features, Specifications, Exterior Features, Installation, Customer’s Daily
Maintenance
CHAPTER 2 : GENERAL OPERATIONS
Basic Operation, Optical System, Image Processing System, Control System,
Power Supply
CHAPTER 3 : MECHANICAL SYSTEM
Externals, Drive System, Optical System, PCB, FAU
CHAPTER 4 : MAINTENANCE AND SERVICING
Periodical Replacement Parts, Consumable Parts Durability, Periodical
Servicing, Special Tools, Solvents and Lubricants
CHAPTER 5 : TROUBLESHOOTING
Initial Check, Troubleshooting, Location of Electrical Parts, Canon Scanner
Test
CHAPTER 6 : PARTS CATALOG
Accessory, Main Body
APPENDIX : GENERAL CIRCUIT DIAGRAM, MAIN PCB CIRCUIT DIAGRAM, CCD DRIVE
PCB CIRCUIT DIAGRAM, BUTTON PCB CIRCUIT DIAGRAM, FAU BUTTON
PCB CIRCUIT DIAGRAM
The information in this service manual is subject to change as the product is improved. All
relevant information in such cases will be provided by the service information bulletins.
A thorough understanding of the CanoScan D660U, based on the service manual and service
information bulletins, is vital to the serviceman in maintaining the product quality and
performance, and in locating and repairing the cause of malfunctions.

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
CONTENTS
I. FEATURES ..................................... 1-1
II. SPECIFICATIONS........................... 1-2
III. EXTERIOR FEATURES .................. 1-3
A. Front View ............................... 1-3
B. Rear View ................................ 1-3
IV. INSTALLATION .............................. 1-4
A. Installation Conditions .......... 1-4
B. Unlocking the Scanning
Unit .......................................... 1-5
C. Connecting to the Host
Computer ................................ 1-6
D. Connecting to FAU .................. 1-7
E. Connecting to Power Source . 1-7
F. Scanning a Document ............ 1-8
V. CUSTOMER’S DAILY
MAINTENANCE .............................. 1-9
CHAPTER 2 : GENERAL OPERATIONS
CHAPTER 1 : GENERAL DESCRIPTIONS
I. BASIC OPERATION ........................ 2-1
A. Functions ................................ 2-1
B. Outline of Electrical System .. 2-2
C. Main PCB Input and Output ... 2-3
D. Basic Sequences ..................... 2-4
II. OPTICAL SYSTEM ....................... 2-10
A. Outline ..................................2-10
B. VAROS ...................................2-11
C. Scanning Lamp/FAU Lamp
Lighting Circuit .................... 2-14
D. Drive Motor Control
Circuit ...................................2-15
III. IMAGE PROCESSING SYSTEM ...2-16
A. Outline ..................................2-16
B. Image Processing
Functions ..............................2-16
IV. CONTROL SYSTEM ..................... 2-19
A. Outline ..................................2-19
B. USB Interface ........................ 2-19
V. POWER SUPPLY ..........................2-21
CHAPTER 3 : MECHANICAL SYSTEM
I. EXTERNALS .................................. 3-1
A. Covers...................................... 3-1
II. DRIVE SYSTEM.............................. 3-7
A. Motor Unit ............................... 3-7
III. OPTICAL SYSTEM ....................... 3-10
A. Lamp Unit .............................. 3-10
IV. PCB .............................................. 3-11
A. Main PCB ............................... 3-11
B. Button PCB ........................... 3-12
V. FAU............................................... 3-14

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
I. INITIAL CHECK.............................. 5-1
A. Operating Environment .......... 5-1
B. Others...................................... 5-1
II. TROUBLESHOOTING..................... 5-2
A. Faulty Image ............................ 5-2
B. Faulty Operation ..................... 5-3
III. LOCATION OF ELECTRICAL
PARTS ............................................ 5-4
IV. CANON SCANNER TEST ................ 5-5
A. Outline .................................... 5-5
B. Operating Environment .......... 5-5
C. Functions ................................ 5-5
D. Function Descriptions ............ 5-6
E. Error Message ....................... 5-12
CHAPTER 5 : TROUBLESHOOTING
CHAPTER 4 : MAINTENANCE AND SERVICING
I. PERIODICAL REPLACEMENT
PARTS ............................................ 4-1
II. CONSUMABLE PARTS
DURABILITY .................................. 4-1
III. PERIODICAL SERVICING .............. 4-1
IV. SPECIAL TOOLS ............................ 4-1
V. SOLVENTS AND LUBRICANTS ...... 4-1
CHAPTER 6 : PARTS CATALOG
FIGURE U01 ACCESSORY ............ 6-2 FIGURE U10 MAIN BODY .................... 6-4
APPENDIX
I. GENERAL CIRCUIT DIAGRAM ..... A-1
II. MAIN PCB CIRCUIT DIAGRAM ..... A-2
III. CCD DRIVE PCB CIRCUIT
DIAGRAM ...................................... A-4
IV. BUTTON PCB CIRCUIT
DIAGRAM ...................................... A-5
V. FAU BUTTON PCB CIRCUIT
DIAGRAM ...................................... A-6

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 1
GENERAL DESCRIPTIONS
I. FEATURES ..................................... 1-1
II. SPECIFICATIONS ........................... 1-2
III. EXTERIOR FEATURES .................. 1-3
A. Front View ............................... 1-3
B. Rear View................................. 1-3
IV. INSTALLATION .............................. 1-4
A. Installation Conditions ........... 1-4
B. Unlocking the Scanning
Unit .......................................... 1-5
C. Connecting to the Host
Computer ................................ 1-6
D. Connecting to FAU ................... 1-7
E. Connecting to Power
Source ..................................... 1-7
F. Scanning a Document............. 1-8
V. CUSTOMER’S DAILY
MAINTENANCE .............................. 1-9

CHAPTER 1
1 - 1
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
I. FEATURES
CanoScan D660U is a flatbed image scanner with 600 x 1200 dpi resolution incorporating the
following features.
1. Film Adapter Unit (FAU) is bult in the scanner for scanning negative and positive films.
2. Canon's proprietary VAROS (Variable Refraction Optical System) technology allows 1200
dpi resolution in the horizontal scanning direction when using FAU to scan films.
3. High-performance CCD and cold cathode fluorescent lamp used as light source achieve
high speed and high signal-to-noise ratio image quality. The lamp has high reliability.
4. The one-touch start button starts the accompanying software, and the FAU button allows
easy film scan.
5. Color gradation is naturally expressed by reading at 14 bits per RGB channel and
outputting at 8 bits.
6. The scanner is easily connected to the host computer through a USB interface.

CHAPTER 1
1 - 2
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
II. SPECIFICATIONS
Main Unit
Type : Flatbed image scanner
Reading Unit
Light source : Cold cathode fluorescent lamp
Max. scan area : 216 x 297 mm (Reflective document)
24 x 36 mm (Film)
Image output : RGB 8 bits per channel (Input 14 bits)
Resolution : 600 x 1200 dpi
(When scanning films) :1200 x 1200 dpi
Scan time : 120 sec. (Color document/A4/600 dpi)
80 sec. (Grayscale document/A4/600 dpi)
120 sec. (Negative film/35mm/1200 dpi)
60 sec. (Positive film/35mm/1200 dpi)
Resolution conversion : 1200/600/300/150/75 dpi (Horizontal)
1200/600/300/150 dpi (Vertical)
Interface
Interface : USB
Others
Operating environment : Temperature : 10 to 35 degrees
Relative humidity : 10 to 90%RH
Air pressure : 645 to 1013 hPa
Power consumption : 15 W (During operation)
5 W (During standby)
1.5 W (During suspend)
Dimensions : 260 (Width) x 440 (Depth) x 98 (Height) mm
Weight : 2.6 kg
Specifications are subject to change without prior notice.

CHAPTER 1
1 - 3
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
qDocument Cover
wAlignment Mark
eDocument Glass
rStart Button
qPower Connector
wFAU Port
eUSB Port
rFAU Button
III. EXTERIOR FEATURES
A. Front View
Figure 1-1
B. Rear View
Figure 1-2
1
2
3
4
32
1
4

CHAPTER 1
1 - 4
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
IV. INSTALLATION
A. Installation Conditions
The following installation conditions are required.
1. Ambient temperature should be between 10 and 35 degrees, and relative humidity between
10% and 90%RH. Avoid location near water faucets, boilers, humidifiers, or refrigerators.
2. Avoid location subject to open flame, dust, or direct sunlight. If it is installed near a
window, hang a curtain to block direct sunlight.
3. The room should be well ventilated.
4. Install on a sturdy and level desk, etc.
5. Moving a scanner from a cold place to a warm place may cause condensation on the metal
parts, resulting in a faulty operation. Give the scanner at least one hour to adjust to the
room temperature before unpacking.

CHAPTER 1
1 - 5
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
B. Unlocking the Scanning Unit
The scanner is shipped with the scanning unit locked by the carriage lock to prevent a
damage during transport. Unlock the scanning unit before using the scanner.
1) Turn the scanner over.
Note: Ensure to lock the scanning unit during transport.
Figure 1-3
2) Push the carriage lock to the "Unlock" position.
Figure 1-4
3) Return the scanner to its standard position.

CHAPTER 1
1 - 6
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
qUSB Port
wUSB Cable
C. Connecting to the Host Computer
CanoScan D660U is connected to the USB port on the host computer using a USB cable
supplied with the scanner. Refer to the "Getting Started" for details. For connecting the host
computer's cables, refer to the manuals for the host computer.
1) Connect the square end of the USB cable to the USB port on the scanner.
2) Connect the rectangular end of the USB cable to the USB port on the host computer.
Figure 1-5
1
2

CHAPTER 1
1 - 7
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
E. Connecting to Power Source
1) Connect the supplied AC adapter to the power connector on the scanner.
2) Plug the AC adapter into a power outlet.
D. Connecting to FAU
Connect the FAU cable (attached to the document cover) to the FAU port on the scanner.
qPower Connector
wAC Adapter
qFAU Port
wFAU Cable
Figure 1-6
Figure 1-7
1
2
12

CHAPTER 1
1 - 8
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
qAlignment Mark
F. Scanning a Document
1) Open the document cover.
2) Place a document on the document glass, facing the image side down and aligning the
upper
corner with the alignment mark.
Figure 1-8
3) Close the document cover, caring not to dislodge the document.
4) Send "SCAN" command from the host computer to scan.
1

CHAPTER 1
1 - 9
COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
V. CUSTOMER'S DAILY MAINTENANCE
Dirt on the document glass or document cover may cause an unclear image or lines on the
scanned image. Clean the document glass or document cover following the steps below.
1) Disconnect all cables from the scanner.
2) Wipe a dirt off with a soft clean cloth dampened with water and well wrung.
3) Thoroughly wipe water off with a dry cloth.

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 2
GENERAL OPERATIONS
I. BASIC OPERATION ........................ 2-1
A. Functions ................................ 2-1
B. Outline of Electrical System... 2-2
C. Main PCB Input and Output ... 2-3
D. Basic Sequences .................... 2-4
II. OPTICAL SYSTEM .......................2-10
A. Outline ..................................2-10
B. VAROS ...................................2-11
C. Scanning Lamp/FAU Lamp
Lighting Circuit ..................... 2-14
D. Drive Motor Control
Circuit ................................... 2-15
III. IMAGE PROCESSING SYSTEM ... 2-16
A. Outline ..................................2-16
B. Image Processing
Functions .............................. 2-16
IV. CONTROL SYSTEM ..................... 2-19
A. Outline ..................................2-19
B. USB Interface ........................ 2-19
V. POWER SUPPLY .......................... 2-21