canoscan-d660u--v1545

COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

JULY 2000 JY8-1318-00Z

REVISION 0

SERVICEMANUAL


COPYRIGHT © 2000 CANON INC.

Printed in JapanImprimè au Japon

Use of this manual should be strictly supervised

to avoid disclosure of confidential information.


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.


PREFACE

This service manual contains the basic information necessary for servicing CanoScan D660Uimage 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. Allrelevant 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 serviceinformation bulletins, is vital to the serviceman in maintaining the product quality andperformance, and in locating and repairing the cause of malfunctions.


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


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


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 - 1COPYRIGHT © 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 thefollowing 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 1200dpi 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 achievehigh 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 allowseasy film scan.

5. Color gradation is naturally expressed by reading at 14 bits per RGB channel andoutputting 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


q Document Coverw Alignment Marke Document Glassr Start Button

q Power Connectorw FAU Porte USB Portr FAU Button

III. EXTERIOR FEATURES

A. Front View

Figure 1-1

B. Rear View

Figure 1-2

1

2

3

4

3 2

1

4

CHAPTER 1


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


B. Unlocking the Scanning Unit

The scanner is shipped with the scanning unit locked by the carriage lock to prevent adamage 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


q USB Portw USB Cable

C. Connecting to the Host Computer

CanoScan D660U is connected to the USB port on the host computer using a USB cablesupplied with the scanner. Refer to the "Getting Started" for details. For connecting the hostcomputer'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


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.

q Power Connectorw AC Adapter

q FAU Portw FAU Cable

Figure 1-6

Figure 1-7

1

2

1 2

CHAPTER 1


q Alignment 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 theupper 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


V. CUSTOMER'S DAILY MAINTENANCE

Dirt on the document glass or document cover may cause an unclear image or lines on thescanned 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.


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

CHAPTER 2


I. BASIC OPERATION

A. Functions

The scanner functions are divided into the following three main systems.

1. Optical system

The optical system exposes a document by the scanning lamp and focuses the reflected lightfrom the document on the CCD by mirrors, a lens and a VAROS unit. When scanning a film using FAU, turns OFF the scanning lamp to turn ON the FAU lamp,and exposes the film by the FAU lamp and focuses the transparent light from the film on theCCD by mirrors, a lens and a VAROS unit.

2. Image processing system

The image processing system converts the analog image signal focused on the CCD intodigital data and performs image processing.

3. Control system

The control system controls the interface with the host computer and the whole operation ofthe scanner.

Figure 2-1

Host

computer

FAU

Scanninglamp

Lens

Scanningunit

Optical system

Image processing systemControl

system

CCD

BGR

BGR

Drive motor

VAROSunit

FAU inverter PCB FAU lamp

CHAPTER 2


B. Outline of Electrical System

CanoScan D660U is not equipped with CPU. The device driver installed in the host computerincludes a control program, which functions as CPU. Analog Image signal read by the CCD are converted into digital data by ASIC. The converteddigital data are image-processed by the ASIC, and the ASIC temporarily stores the data in thebuffer RAM, and outputs to the host computer via USB port.

Figure 2-2

ASIC

Buffer

RAM

Host computer

Control

programM1

USB

port

Button PCB

Start button

Drive motor

Homepositionsensor

CCD drive PCB

FAU buttonFAU inverter PCB

FAU lamp

AC adapter

Inverter PCB

Scanning lamp

Main PCB

CHAPTER 2


C. Main PCB Input and Output

Figure 2-3

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

MB

+M

B-

MA

+M

A-

+12

VM

+12

VM

SE

NA

SE

NB

GN

DG

ND

TR

VA

RO

SR

SC

LPP

H1

PH

2D

GN

D+

12V

VO

RA

GN

DV

OG

AG

ND

VO

BA

GN

DH

MS

EN

VC

CG

ND

GN

D+

12V

I+

12V

I

Fla

tBut

ton

DG

ND

DG

ND

DG

ND

1 2 3 4

1+

12V

IG

ND

FAU

Dec

tFA

UB

utto

nD

GN

D

1

CN

2

J1

J2J3

1 2 3 4 5 6

J4

M1

1 2+

12V

IG

ND

J1

1 2V

CC

VA

RO

S_O

NA-

A+ B-

B+

+12

VM

+12

VM

J2

J5

J1

J3 J4

CN

1 J1

+12

VG

ND

AC

adap

ter

US

B

FAU

butto

nP

CB

Mai

nP

CB

But

ton

PC

B

FAU

inve

rter

PC

B

1 2 3

CN

1

Inve

rter

PC

B

Sol

enoi

d

Driv

em

otor

CC

D

Hom

epo

sitio

nse

nsor

FAU

lam

p

Sca

nnin

gla

mp

D-

D+

GN

D

1 2 3 4

43

21

12

34

2 3 1 2

1 22 3 4 5

CC

Ddr

ive

PC

B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

CHAPTER 2


D. Basic Sequences

The basic sequences of the scanner is divided into the power ON sequence, calibrationsequence, and document scanning sequence.

1. Power ON sequence

Figure 2-4-1

Returns FALSEUSB cable is connectedproperly?

NO

YES

Power ON

2 Scanner was initialized?

NO

Returns FALSERegister test passed?NO

YES

Buffer RAM test passed?NO

YES

Returns scanningunit to the home

position

Scanning unit isin home position?

NO

Home position sensorworks normally?

NO

YES

Light intensity test passed?YES

1

NO

<Light intensity test error>Initializes the scanner again up to 30 sec.

Returns FALSE

Returns FALSE

Returns FALSE

YES

CHAPTER 2


Figure 2-4-2

Returns FALSEHome position sensorworks normally?

NO

YES

Returns FALSEScan start positionwas detected?

NO

YES

Writes in register that"scanner was initialized"

1

2

Returns TRUE

Standby

CHAPTER 2


2. Calibration sequence

Figure 2-5

White shadingdata is required?

NO

YES

Standby

9 lines of datawas obtained?

NO

Initializes buffer RAM control

Obtains 1 line of datato buffer RAM Moves scanning unit

forward 9 lines

YES

Returns scanning unitto the home position

White shading datais transmitted to host

computer?

NO

YES

Standby

CHAPTER 2


1) Home position test

Checks if the scanning unit operates normally. When the scanner is powered ON, thescanning unit automatically moves to the home position. This is also a scan start position.

Figure 2-6

2) Light intensity test

Checks if the light intensity of the scanning lamp reaches the standard value. When thescanning lamp lights, the control program reads the light reflected from the white calibrationplate with the CCD, and checks if the light intensity into each CCD of red, green, and bluereaches the standard value. If the light intensity is below the standard value, the controlprogram continues the test for up to 30 seconds. If it still does not reach the standard value,the control program returns "FALSE".

q Home Positionw White Calibration Plate

1 2

CHAPTER 2


3. Document scanning sequence

Figure 2-7-1

Document scanis required?

NO

YES

Standby

Calculates the amount ofhorizontal scan data and

the number of vertical scanmotor pulse

Sets scan parameter to ASIC,and initializes buffer RAM

Moves scanning unitto scan start position

Scanning unit moved?NO

YES

Starts document scan

3

CHAPTER 2


Figure 2-7-2

Scan cancellationis required?

NO

NO

Returns scanning unit

Scanning unit returnedto the home position?

NO

YES

3

Document was scanned?

YES

YES

Stops drive motor

Image data wastransmitted?

NO

YES

Standby

CHAPTER 2


II. OPTICAL SYSTEM

A. Outline

When scanning are flective document, the scanning lamp in the scanning unit exposes thedocument and focuses the reflected light from the document on the CCD. When scanning afilm at 601 dpi or higher using FAU, FAU lamp built in the document cover exposes the film,and optical axis is shifted by a half pixel in the horizontal scanning direction by means ofVAROS unit, and the images before and after the optical axis is shifted are composed by thehost computer.

Figure 2-8-2

Figure 2-8-1

q VAROS Unitw CCDe Beltr Drive Motort Scanning Lamp

1

2

3

4

5

CHAPTER 2


B. VAROS

1. VAROS operation

VAROS is short for Variable Refraction Optical System. Refraction glass is placed between theCCD and lens, and the direction of the refraction glass is moved to change the optical axisthus changing the scanning position. When the host computer commands 601 dpi or higherresolution to scan a film using FAU, two image data before and after the direction of therefraction glass is moved are composed to make double image data. The resolution when usingVAROS is always 1200 dpi regardless of the command from the host computer. The drive motor runs by the drive signal sent from the ASIC and drives the scanning unit viathe belt.

Figure 2-9

q Lensw VAROS Unite Refraction Glass

1

3

2

CHAPTER 2


2. Scanning by means of VAROS

There placed in order of the CCD, refraction glass, lens, and mirrors in the scanning unit.The refraction glass is equipped with a solenoid to control the direction of the refraction glass.When the host computer commands 601 dpi or higher resolution to scan a film using FAU, theASIC selects to use VAROS for scanning.Firstly scans before moving the direction of the refraction glass at 600 dpi in the horizontalscanning direction and 1200 dpi in the vertical scanning direction. The scanned image data isstored in the host computer as a temporary data.

Figure 2-10

Refraction glassCCD

Horizontal scanFilm

Vertical scan

CHAPTER 2


After the 1st scan, the ASIC turns signal ON to drive the solenoid to change the direction ofthe refraction glass. Changing the direction of the refraction glass shifts the optical axis fromthe CCD to a film by a half pixel. Therefore, the 2nd scan is performed between the pixels ofthe 1st scan.

Figure 2-11

These image data are composed in the host computer to output 1200 x 1200 dpi image data.When the ASIC commands between 601 dpi and 1199 dpi, scan is performed at 1200 dpi, thenthe host computer performs resolution conversion to output the image data conforming to thecommand by the ASIC.

Refraction glassCCD

Horizontal scan Film

Vertical scan

CHAPTER 2


C. Scanning lamp/FAU lamp lighting circuit

When the scanner is powered ON, the "LAMP ON" signal is set to "H" and turns ON the lampcontrol circuit to provide +12VI to the inverter PCB to light the scanning lamp.

The scanning lamp exposure control is performed by scanning white calibration plate whichis placed outside the image area to feedback on the output. ASIC inputs the pulse signal(LAMP ON) according to the feedbacked signal to the lamp control circuit to generate +12VI.

FAU lamp exposure control is performed by directly feedbacking the output from the FAUlamp. When the host computer commands to use the FAU, ASIC sets "FAU INV" signal to "H".The lamp control circuit provides +12VI to FAU inverter PCB to light the FAU lamp.

Figure 2-12

ASIC

LampcontrolcircuitHost

computer

Main PCB

CCDdrivePCB

InverterPCB

GND

Scanninglamp

LAMPON

FAUINV12VI

GND

FAU InverterPCB

FAU lamp

Cold cathodefluorescent

lamp

Cold cathodefluorescent

lamp

CHAPTER 2


D. Drive Motor Control Circuit

When the host computer sends a command to change scaling/resolution, the ASIC generatesthe control signal (A+, A-, B+, B-) and sends the signal to the drive motor via the motor driver.When the host computer changes its command to the ASIC, the ASIC changes its controlsignal to control the motor driver.

Figure 2-13

M1Motor

driver

A+

A-

B+

B-ASIC

CCD drive PCB Main PCB

Host computerDrive motor

CHAPTER 2


B. Image Processing Functions

1. CCD

The ASIC outputs clock signals based on the command from the host computer to the CCD.The scanner uses a 3 line CCD to read the color signals. The 3 line CCD is a single chipphotoelectric conversion device which consists of 3 lines of several thousand photosensitivedevices, each several microns square, reading for red, green, and blue analog image signals,and of a scanning circuit.

Figure 2-15

III. IMAGE PROCESSING SYSTEM

A. Outline

The image processing system converts analog image signals read by the CCD into digitaldata, performs various image processing, then outputs the data to the host computer via USBport. Shading correction and gamma correction are performed by the driver software instead ofthe scanner function.

Figure 2-14

2. A/D conversion

Analog image signals output from the CCD are converted into the digital data of 14 bits eachby A/D converter in the ASIC in order of red, green, and blue image signals.

1. CCD2. A/D

conversion5. Resolution

conversionTo host computer

3. Shading

correction4. Gamma

correction

Blue photosensitive sectionGreen photosensitive sectionRed photosensitive section

CHAPTER 2


3. Shading correction

When the CCD reads a document of even density, the image signal corresponding to eachpixel is not uniform for the following reasons.

1) Light intensity of the scanning lamp is not uniform.2) There is variation in the sensitivity of the light phototransistors.3) There is a slight output from the light phototransistors even when there is no input.

These variations are corrected by the shading correction. Calibration data is used asstandard density data when scanning a document. Scanned image data is compared to thestandard density data for the image data correction.

4. Gamma correction

Shading-corrected red, green and blue image data are divided uniformly into 16384gradations according to the document density. The contrast and density of this image data areadjusted by the gamma correction. The ASIC writes gamma curve specified by the hostcomputer into the buffer RAM before scanning a document. Image scan starts and the imagedata input to the buffer RAM is converted by the gamma curve data and is output.

5. Resolution conversion

1) Resolution conversion in the horizontal scanning direction Basic resolution is 600 dpi, and selective at 600 dpi, 300 dpi, 150 dpi, and 75 dpi.Resolution conversion in the horizontal scanning direction is performed by averaging theimage data of the basic resolution as shown in Figure 2-16.

Figure 2-16

A B C D E F G H

A' C' E' G'

A'=(A+B)/2 C'=(C+D)/2 E'=(E+F)/2

CHAPTER 2


When decreasing the resolution, the scanning unit moves at a faster speed to read less lines.

2) Resolution conversion in the vertical scanning direction The ASIC changes the scanning unit moving speed to change the resolution in the verticalscanning direction. When increasing the resolution, the scanning unit moves at a low speed toread more lines as shown in Figure 2-18.

Figure 2-19

Figure 2-17

Figure 2-18

Sampling point

Moving direction

Scanning unit

Sampling point

Moving direction

Scanning unit

Sampling point

Moving direction

Scanning unit

CHAPTER 2


IV. CONTROL SYSTEM

A. Outline

CanoScan D660U is not equipped with the CPU and the scanner is controlled by the devicedriver installed in the host computer. The device driver includes the scanner control program,which sets a command directly to the ASIC to control the scanner.

B. USB Interface

The scanner is connected to the host computer via USB interface. USB (Universal SerialBus) is the next generation general-purpose input-output interface to connect the computerperipheral devices.

1. Features of USB includes;

* Connects peripheral devices by a tree structure.* Connects up to 127 devices by a tree structure.* Connects by 12 Mbps of "full speed mode" or 1.5 Mbps of "low speed mode". The scanner is conforming to "full speed mode".* Supports hot plug (able to connect/disconnect with the power ON)

2. Connection to USB devices

USB devices are connected to a host computer by a tree structure consisting of device called"node" and "hub" which is a group of "node" as shown in Figure 2-20. The tree structure hasthe following conditions.* Able to connect up to 127 "node" and "hub" in total.* Limited up to 6 layers.* USB cable must be 5 meters or shorter.

Figure 2-20

Host computer

Hub 1

Hub 2

Hub 3

Hub 4

Hub 5

Node

Node

Hub 6

Node

Node

Node

Node

Node

Node

Node

CHAPTER 2


USB cable has A plug for connecting to upper layer and B plug for connecting to lower layer.

Figure 2-21

3. USB data transfer

USB data is transferred in the following four data structures called "packet".* Token packet : Used to start a data transfer* Handshake packet : Used to report the status of a data transfer* Data packet : Used to send and receive data* Special packet : Used for other transfer

USB device may support multiple data transfer endpoints, so there are four types of datatransfer protocols.

* Isochronous transfer : Allocates a data transfer time to a device. Highest priority is given but no error is corrected.

* Interrupt transfer : Periodically transfers data within a specified waiting time. Second priority is given.

* Control transfer : Used to configure the host computer when USB device is attached/ removed.

* Bulk transfer : Lowest priority is given but larger amounts of data is sequentially transferred to a free bus.

A Plug B Plug

CHAPTER 2


Figure 2-22

V. POWER SUPPLY

AC adapter is supplied for the scanner power source. The AC adapter converts the AC powerinto +12VDC. The output DC power is converted into +5VDC in the main PCB. +5VDC is usedfor the IC in the main PCB. +12VDC is supplied to the CCD and drive motor.

Protection circuit is built-in the main PCB to prevent overvoltage or reverse polarity. Theprotection circuit is composed of a fuse and zener diode. If overvoltage or reverse polarity isinput, the fuse burns to protect a further circuit.

AC power

Main PCBAC adapter

AC/DCconversion

circuit

Drive motor

CCD

+12 VDC +5 VDCconversion

circuit

+12 VDC

+12 VDCProtectioncircuit


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

CHAPTER 3


q Document Coverw Document Glass Unite Base Frame

I. EXTERNALS

When cleaning, checking or repairing inside the scanner, remove the necessary covers usingthe following procedures.

A. Covers

Figure 3-1

1

2

3

CHAPTER 3


q Document Coverw Hingee FAU Cable

1. Removing the document cover

1) Disconnect the FAU cable.2) Pull up the hinges to remove the document cover.

Figure 3-2

1

2

3

2

CHAPTER 3


2. Removing the document glass unit

1) Remove the document cover.2) Unhook the hook on the front of the document glass unit, then lift the hook part.

q Hookw Hook Parte Document Glass Unit

Figure 3-3

Note: Take care not to lift the hook part excessively since it is attached to the document glass with a double-sided tape.

1

23

CHAPTER 3


Figure 3-4

q Hookw Document Glass Unit

3) Unhook the hook on the rear of the document glass unit, then slide the document glassunit forward.

1

21

CHAPTER 3


Figure 3-5

Figure 3-6

Note: Take care not to touch the rear side of the document glass with hand to prevent dirt.

4) Lift the rear of the document glass unit.

CHAPTER 3


Figure 3-7

3. Precaution when attaching the document glass unit

1) Attach the document glass unit pressing toward the front of the scanner as a standardposition.

2) Take care not to touch the rear of the document glass unit with hand to prevent dirt.

CHAPTER 3


Figure 3-9

q Screww Sliding Rod Covere Sliding Rod

Figure 3-8

II. DRIVE SYSTEM

A. Motor Unit

1. Removing the sliding rod

1) Remove the document cover.2) Remove the document glass unit.3) Remove one screw to remove the sliding rod cover.4) Remove the sliding rod.

2

1

3

CHAPTER 3


2. Removing the scanning unit

1) Remove the document cover.2) Remove the document glass unit.3) Remove the sliding rod.4) Remove the flat cable.5) Lift the scanning unit to loose the belt, then remove the scanning unit.

q Scanning Unitw Belte Flat Cable

Figure 3-10

Note: Take care not to touch the scanning lamp and the CCD drive PCB.

3. Precaution when attaching the scanning unit

1) Take care not to touch the scanning lamp and the CCD drive PCB.2) Attach the belt as shown in Figure 3-10.3) When attaching the flat cable, take care not to put a hold in the flat cable.

1

32

CHAPTER 3


q Scanning Unitw Lamp Unite Screwr Drive Motor Cablet Drive Motory Lamp Cableu Screw

4. Removing the drive motor

1) Remove the document cover.2) Remove the document glass unit.3) Remove the sliding rod.4) Remove the scanning unit.5) Remove two screws and lamp cable to remove the lamp unit.6) Remove two screws and drive motor cable, then remove the drive motor.

Figure 3-11

Note: Do not remove the CCD drive PCB from the scanning unit since it must be adjustedat the factory.

1

3

3

2

5 4

7

6

CHAPTER 3


Figure 3-13

q Screww Lamp Cable

q Lamp Unit

Figure 3-12

III. OPTICAL SYSTEM

A. Lamp Unit

1. Removing the lamp unit

1) Remove the document cover.2) Remove the document glass unit.3) Remove the sliding rod.4) Remove the scanning unit.5) Remove two screws and lamp cable to remove the lamp unit.

1

1

1

2

CHAPTER 3


q Button Cablew Screwe Main PCBr Flat Cablet Ferrite Core Holder

Figure 3-14

2. Precaution when attaching the main PCB

1) Remove two screws to remove the ferrite core holder temporarily.2) Connect the flat cable to the main PCB.3) Bend the button cable at 90 degrees when connecting to the main PCB as shown in Figure

3-14.

IV. PCB

A. Main PCB

1. Removing the main PCB

1) Remove the document cover.2) Remove the document glass unit.3) Remove the flat cable, button cable, and two screws, then remove the main PCB.

1

4

3

2

23 45

1

5190

CHAPTER 3


Figure 3-15

B. Button PCB

1. Removing the button PCB

1) Remove the document cover.2) Remove the document glass unit.3) Move the scanning unit to the center.4) Remove the button cable.5) Remove two screws.6) Remove the start button from the button PCB, caring not to lose the button spring.

q Start Buttonw Button Cablee Screwr Button PCB

Figure 3-16

1

3 2

4

CHAPTER 3


q Button PCBw Start Buttone Button Spring

Figure 3-17

1

23

3

CHAPTER 3


Figure 3-18

q Document Coverw FAU Covere FAU Buttonr FAU lamp

V. FAU

The FAU is located between the document cover and FAU cover. It is installed only at thefactory. Therefore, if the FAU is faulty, replace the whole document cover.

12

3

4


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 4


I. PERIODICAL REPLACEMENT PARTS

None

II. CONSUMABLE PARTS DURABILITY

None

III. PERIODICAL SERVICING

None

IV. SPECIAL TOOLS

None

V. SOLVENTS AND LUBRICANTS

Lubricants used for disassembly and reassembly of the scanner.

Name : Grease

Tool No. : TKC-0955

Usage : To be applied to the sliding part between the scanning unit and sliding rod.

Remarks : MOLYKOTE EM-50L


CHAPTER 5

TROUBLESHOOTING

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


I. INITIAL CHECK

A. Operating Environment

Check if the operating environment conforms to the following conditions.

1. Line voltage is within ±10% of the rated value.

2. Ambient temperature and humidity conform to the operating environment. (Refer toCHAPTER 1, II. SPECIFICATIONS)

3. The scanner is not installed near a water faucet, boiler, humidifier, open flame, or in dustyplace.

4. The scanner is not exposed to direct sunlight. If it must be installed by a window, hang acurtain to block direct sunlight.

5. The scanner is installed in a well-ventilated place.

B. Others

Moving a scanner from a cold place to a warm place can cause condensation on the metalparts, resulting in a faulty operation.

CHAPTER 5


II. TROUBLESHOOTING

Causes and corrective actions against possible faulty image and faulty operation are listedbelow.

A. Faulty Image

1. Image not output

Cause 1 : Faulty connection of the USB cableCorrective action : Securely connect the USB cable.

Cause 2 : Faulty scanning lamp when scanning in flatbed modeCorrective action : Replace the lamp unit.

Cause 3 : Faulty FAU when scanning a filmCorrective action : Replace the document cover.

Cause 4 : Faulty CCDCorrective action : Replace the scanning unit.

Cause 5 : Faulty main PCBCorrective action : Replace the main PCB.

2. Uneven image density or lines

Cause 1 : Dirt on the document cover or document glassCorrective action : Clean the document cover or document glass.

Cause 2 : Faulty calibration dataCorrective action : Scan again.

Cause 3 : External light is entering into the scanner. External light entering intothe CCD can cause uneven image density.

Corrective action : Fully close the document cover. If it is impossible, cover with a sheet etc.to prevent external light.



CHAPTER 5


B. Faulty Operation

1. Host computer not detecting the scanner

Cause 1 : Faulty installation of the device driverCorrective action : Uninstall the device driver and reinstall it.

Cause 2 : Faulty connection of the USB cableCorrective action : Securely connect the USB cable to the scanner and host computer.


2. Scanner not operating

Cause 1 : Carriage lock is locked.Corrective action : Unlock the carriage lock.

Cause 2 : Faulty connection of the flat cableCorrective action : Securely connect the flat cable to the scanning unit and main PCB.

Cause 3 : Faulty scanning lampCorrective action : Replace the lamp unit.

Cause 4 : Faulty FAUCorrective action : Replace the document cover.



3. Drive motor not running

Cause 1 : Faulty connection of the flat cableCorrective action : Securely connect the flat cable.

Cause 2 : Faulty drive motorCorrective action : Replace the drive motor.

Cause 3 : Faulty motor driverCorrective action : Replace the scanning unit.


CHAPTER 5


III. LOCATION OF ELECTRICAL PARTS

q Main PCBw Home Position Sensore CCD Drive PCBr Drive Motort Start Buttony Inverter PCBu FAU Buttoni FAU Inverter PCB

Figure 5-1

1

23

4

7

6

8

5

CHAPTER 5


IV. CANON SCANNER TEST

A. Outline

Canon Scanner Test is utility software to check if faulty scanner operation is due tohardware or communication with a host computer.

* For WindowsScanTest.exe (Japanese/English is switched according to the language used in Windows.)

* For MacintoshScantestD660Uj (Japanese)/ScantestD660Ue (English)

B. Operating Environment

Windows platform1) CanoScan D660U2) PC/AT Compatibles (Pentium or faster is recommended.)3) Windows 98 or Windows 2000 Operating System4) Scanner Device Driver

Macintosh platform1) CanoScan D660U2) Power Macintosh3) Macintosh OS (Version 8.5 or later)4) Scanner Device Driver

Note: Install the scanner device driver before using the Canon Scanner Test.

C. Functions

1. USB information (Windows only)

Scanner information recognized by Windows.

2. Scanner information

Product ID, ROM version, etc. are shown when the scanner is properly communicated withthe host computer.

3. Scanner self test

Scanner self test is performed.

4. Scan

Any image is scanned and saved as an image file in the same folder with the Canon ScannerTest.

CHAPTER 5


D. Function Descriptions

1. USB information (Windows only)

Select "USB Information" from the "Function" menu to display as shown in Figure 5-2(Windows).

Figure 5-2

· Vendor Description : Manufacturer name (Canon) of the scanner connected.· Device Description : Product name of the scanner connected.· Port Name : Port name of the scanner recognized by Windows.· Local Name : Product name of the scanner connected.

CHAPTER 5


2. Scanner information

Select "Scanner Information" from the "Function" menu to display as shown in Figure 5-3(Windows) or Figure 5-4 (Macintosh).

Figure 5-3

Figure 5-4

· Vendor ID : Manufacturer name (Canon) of the scanner connected.· Product ID : Product name of the scanner connected.· ROM Version : ASIC version.

CHAPTER 5


3. Scanner self test

Select "Scanner self test" from the "Function" menu to display a dialog as shown in Figure5-5 (Windows) or Figure 5-6 (Macintosh).

Figure 5-5

Figure 5-6

CHAPTER 5


Click "OK" to perform Scanner self test. When it has completed normally, a dialog as shownin Figure 5-7 (Window) or Figure 5-8 (Macintosh) is displayed.

Figure 5-7

Figure 5-8

CHAPTER 5


4. Scan

Select "Scan" from the "Function" menu to display a dialog as shown in Figure 5-9(Windows) or Figure 5-10 (Macintosh).

Figure 5-9

CHAPTER 5


Figure 5-10

* Scan count : Specify the number of scan.* Resolution : Select a resolution for the image to be scanned.* Image : Select a handling method of the scanned image. When "Read in memory (no

file)" is selected, scanned image is read into the memory, then abandonedafter readout. When "Save to TIFF file" is selected, the file of "img0.tif" is setup in the same folder with the Canon Scanner Test.

File volume is as follows. 75 dpi : Approx. 1.6 MByte150 dpi : Approx. 6.5 MByte300 dpi : Approx. 26.2 MByte600 dpi : Approx. 104.9 MByte

Note: Confirm before scanning that the available disk space on the HDD in which theCanon Scanner Test is installed exceeds above file volume.

CHAPTER 5


E. Error Message

Causes and corrective actions for error messages which may occur during Canon ScannerTest are described below.

1. When Canon scanner test is started, "Unable to find USB scanner" is displayed.

Cause 1 : Device driver for the scanner is not installed in the host computer.Corrective action : Install the device driver.

Cause 2 : Scanner is not detected by the host computer.Corrective action : Properly detect the scanner by the host computer.

2. Scanner information is not displayed or scanner self test terminates without scanoperation.

Cause 1 : Carriage lock is locked.Corrective action : Unlock the carriage lock.

Cause 2 : Scanner is not detected by the host computer.Corrective action : Properly detect the scanner by the host computer.

Cause 3 : Faulty flat cableCorrective Action : Check the flat cable connector. If it is normal, replace the flat cable.

Cause 4 : Faulty CCDCorrective Action : Replace the scanning unit.

Cause 5 : Faulty main PCBCorrective Action : Replace the main PCB.

3. "Carriage lock is locked" is displayed.

Cause 1 : Carriage lock is locked.Corrective Action : Unlock the carriage lock.

Cause 2 : Faulty drive motorCorrective Action : Replace the drive motor.

Cause 3 : Faulty home position sensorCorrective Action : Replace the scanning unit.

4. "Unable to open file" is displayed.

Cause : Canon scanner test is started from a CD-ROM or write-protect HDD.Corrective Action : Copy the Canon scanner test on a writable HDD to use.


CHAPTER 6

PARTS CATALOG

FIGURE U01 ACCESSORY ............. 6 -2 FIGURE U10 MAIN BODY .................... 6 -4


ACCESSORYFIGURE U01

1

2

7

3

4

5

6

8


FIGURE&

KEY NO.DESCRIPTION SERIAL NUMBER/REMARKS

Q'TY

PART NUMBERRANK

U01-01

02

03

04

05

06

07

08

104-0138-0SP

003-0269-0SP

003-2164-0SP

003-2191-0SP

003-2163-0SP

003-2162-0SP

003-2190-0SP

NPN

NPN

CABLE, USB

ADAPTER, AC

ADAPTER, AC

ADAPTER, AC

ADAPTER, AC

ADAPTER, AC

ADAPTER, AC

FILM GUIDE

COVER, FAU

1

1

1

1

1

1

1

1

1

JPN/CCSI/CANADA/CLA

CSPL/CLA/EUR

HK/LOTTE

UK

ARGENTINA/CA

CHINA


MAIN BODYFIGURE U10

2

6

14 12

13

11

16

17

15

8

4

5

1

18

3

10

7

2019

21

22

23

24

21

9


FIGURE&

KEY NO.DESCRIPTION SERIAL NUMBER/REMARKS

Q'TY

PART NUMBERRANK

U10-01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

003-5244-0SP

002-0841-0SP

051-0544-0SP

004-0399-0SP

104-0153-0SP

NPN

051-0541-0SP

051-0540-0SP

077-0626-0SP

065-0054-0SP

002-0963-0SP

104-0162-0SP

003-5256-0SP

003-5255-0SP

051-0568-0SP

NPN

003-2157-0SP

051-0546-0SP

NPN

NPN

077-0601-0SP

077-0627-0SP

077-0302-0SP

077-0618-0SP

DOCUMENT COVER ASSEMBLY

PLATEN GLASS ASSEMBLY

BUTTON

BUTTON PCB ASSEMBLY

CABLE, BUTTON

BASE FRAME

HINGE(R)

HINGE(L)

SCREW, M3X6, TAPPING

MOTOR ASSEMBLY

LAMP ASSEMBLY

FLEXIBLE FLAT CABLE

OPTICAL ASSEMBLY

MAIN PCB ASSEMBLY

COVER, SLIDING ROD

SLIDING ROD

BELT ASSEMBLY

LOCK, CARRIAGE

CORE, FERRITE

HOLDER, FERRITE CORE


SCREW, M3X6, WITH SW


SCREW, M3X6, WITH TW

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

4

2

2

2


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

A - 1COPYRIGHT © 2000 CANON INC. CANOSCAN D660U REV.0 JULY 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

I. GENERAL CIRCUIT DIAGRAM

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

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VC

CW

PS

CL

SD

A

8 7 6 5

A0

A1

A2

VS

S

1 2 3 4

R33

R38

R37

SE

NB

SE

NA

D-

D+

C54

C12

C26

C41

C38

C35

C1


III. CCD DRIVE PCB CIRCUIT DIAGRAM+

+

+

C4

C5

C11 C6

C9

C3

C2C

16

C14

C15

R9

R14

R6

VO

B

VO

G

VO

R

VA

RO

S

BM

SE

N

2 4 6 8 10 12 14 16 18 20 22 24 26 28 30

1 3 5 7 9 11 13 15 17 19 21 23 25 27 29

MB

-M

A-

12V

MS

EN

B

PB

2

VC

C

MB

+M

A+

SE

NA

TR

RS

PB

1V

OR

VO

GV

OB

12V

I

12V

C12

VC

C1

I1 I2 I3 I4 I5 I6 I7

GN

D

6 5 4 3 2 1

O1

O2

O3

O4

O5

O6

O7

CO

M

1 2 3 4 5 6 7 8 1 2

J1

1 2J2V

CC

12V

C

J4

U3

I1 I2 I3 I4 I5 I6 I7

GN

D

O1

O2

O3

O4

O5

O6

O7

CO

M

1 2 3 4 5 6 7 8

U4

OS

1O

S2

OS

3

OD

SS

SS

NC

NC

NC

NC

NC

NC

IÍ1A

1IÍ1

A2

IÍ2A

1IÍ2

A2

SH

1S

H2

SH

3

RS

CP

SP

14 9 15 8 13 12 10 3 4 19

21 22 1 20 2 11 5 6 7 16 17 18

GD S

U1

J3

SE

NA

Q4

C E

BC

10

R4

R5

R7

Q1

C E

B

12

C8

R3

R13

VA

RO

SC

12

R16

PB

1

PB

2

TR

U2A

1110

R11

RS

U2E

98

VC

C

VC

C

U2D

1213

U2F

34

R15

U2B

56

R17

R20

R2

Q3

VC

C

HM

SE

N

MB

+M

B-

SE

N6

R21

R18

MA

-

MA

+

R19

U2C

R12

R10

R8

Q2

C E

BC

7

C13 M12

G

R1

ISO

1

VC

C

D1

M12

G

M12

G

16 15 14 13 12 11 10 9

16 15 14 13 12 11 10 9


IV. BUTTON PCB CIRCUIT DIAGRAM

SW1 BOT21

43

1234

J1


V. FAU BUTTON PCB CIRCUIT DIAGRAM

SW1 BOT21

43

12

J1


REVISION 0 (JULY 2000)

Prepared by

TECHNICAL SUPPORT DEPT.

QUALITY ASSURANCE ENGINEERING DIV.

QUALITY ENGINEERING CENTER

CANON INC.

30-2, Shimomaruko 3-Chome, Ohta-ku, Tokyo 146-8501, Japan

canoscan-d660u--v1545

Documents

general circuit diagram

service manual

main pcb circuit diagram

japan imprime au japonpreface

japan imprime au japonf91

japan imprime au japonjuly

drive system

optical system