Canon CANOSCAN N1220U Manuale utente

JUNE 2000 JY8-1317-00Z

REVISION 0

SERVICE

MANUAL

Printed in Japan

Imprimè au Japon

Use of this manual should be strictly supervised

to avoid disclosure of confidential information.

CanoScan N650U F91-4611-200 AZJ000001-

F91-4631-200 CZJ000001-

F91-4641-200 DZJ000001-

F91-4661-200 FZJ000001-

F91-4671-200 LZJ000001-

F91-4681-200 JZJ000001-

F91-4691-200 KZJ000001-

CanoScan N656U F91-4612-200 AZK000001-

F91-4622-200 MZK000001-

F91-4632-200 CZK000001-

F91-4642-200 DZK000001-

F91-4662-200 FZK000001-

F91-4672-200 LZK000001-

F91-4682-200 JZK000001-

F91-4692-200 KZK000001-

CanoScan N1220U F91-4712-200 AZL000001-

F91-4722-200 MZL000001-

F91-4732-200 CZL000001-

F91-4742-200 DZL000001-

F91-4762-200 FZL000001-

F91-4772-200 LZL000001-

F91-4782-200 JZL000001-

F91-4792-200 KZL000001-

LIST OF SERIAL NUMBER

PREFACE

This service manual contains the basic information necessary for servicing the N650U/N656U/

N1220U image scanners.

The service manual consists of the following chapters.

Chapter 1: General Descriptions

Features, specifications, exterior features, installation, customer’s daily

maintenance

Chapter 2: Operation and Timing

Basic operation, optical system, image processing system, control system,

power supply

Chapter 3: Mechanical System

Externals, drive system, optical system, electrical system

Chapter 4: Maintenance and Servicing

Periodical replacement parts, consumable parts durability, periodical

servicing, special tools, solvents and lubricants

Chapter 5: Troubleshooting

Introduction, troubleshooting, location of electrical parts, canon scanner

test

Chapter 6: Parts Catalog

Appendix: General Circuit Diagram, Main PCB Circuit Diagram, USB Connector 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 N650U/N656U/N1220U, 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.

CONTENTS

I. FEATURES ..................................... 1-1

II. SPECIFICATIONS ........................... 1-2

III. EXTERIOR FEATURES .................. 1-4

A. Front View ............................... 1-4

B. Rear View................................. 1-4

IV. INSTALLATION .............................. 1-5

A. Preface..................................... 1-5

B. Installation .............................. 1-6

C. Connecting to the Host Computer

................................................. 1-7

D. Scanning a Document ............ 1-8

V. CUSTOMER’S DAILY

MAINTENANCE .............................. 1-9

CHAPTER 2 : OPERATION AND TIMING

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 ....................... 2-11

A. Outline .................................. 2-11

B. Document Scanning Sequence ...

............................................... 2-12

C. Contact Image Sensor........... 2-13

D. Drive Motor Control Circuit

............................................... 2-16

III. IMAGE PROCESSING SYSTEM ... 2-17

A. Outline .................................. 2-17

B. Image Processing Functions

............................................... 2-18

IV. CONTROL SYSTEM ..................... 2-20

A. Outline .................................. 2-20

B. Outline of USB ...................... 2-21

V. POWER SUPPLY .......................... 2-23

CHAPTER 3 : MECHANICAL SYSTEM

I. EXTERNALS .................................. 3-1

A. Covers...................................... 3-1

II. DRIVE SYSTEM.............................. 3-5

A. Drive Unit ................................ 3-5

B. Drive Wire ................................ 3-8

III. OPTICAL SYSTEM ......................... 3-9

A. Contact Image Sensor ............. 3-9

IV. ELECTRICAL SYSTEM ................ 3-11

A. USB Connector PCB .............. 3-11

B. Flat Cable .............................. 3-13

I. INTRODUCTION ............................. 5-1

A. Initial Check ............................ 5-1

B. Others...................................... 5-1

II. TROUBLESHOOTING ..................... 5-2

A. Troubleshooting Image Defects ...

................................................. 5-2

B. Troubleshooting Malfunctions

................................................. 5-3

III. LOCATION OF ELECTRICAL PARTS ..

................................................. 5-4

IV. CANON SCANNER TEST ................ 5-5

A. Outline .................................... 5-5

B. How To Use Canon Scanner Test .

................................................. 5-5

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 N650U ...................... 6-4

FIGURE U11 N656U ............................. 6-6

FIGURE U20 N1220U ........................... 6-8

APPENDIX

I. GENERAL CIRCUIT DIAGRAM

(CanoScan N650U/656U)............... A-1

II. GENERAL CIRCUIT DIAGRAM

(CanoScan N1220U) ...................... A-2

III. MAIN PCB CIRCUIT DIAGRAM

(CanoScan N650U/N656U) ............ A-3

IV. USB CONNECTOR PCB CIRCUIT

DIAGRAM

(CanoScan N650U/N656U) ............ A-6

V. MAIN PCB CIRCUIT DIAGRAM

(CanoScan N1220U) ...................... A-7

VI. USB CONNECTOR PCB CIRCUIT

DIAGRAM (CanoScan N1220U)... A-10

CHAPTER 1

GENERAL DESCRIPTIONS

I. FEATURES ..................................... 1-1

II. SPECIFICATIONS ........................... 1-2

III. EXTERIOR FEATURES .................. 1-4

A. Front View ............................... 1-4

B. Rear View ................................. 1-4

IV. INSTALLATION .............................. 1-5

A. Preface..................................... 1-5

B. Installation .............................. 1-6

C. Connecting to the Host Computer

................................................. 1-7

D. Scanning a Document............. 1-8

V. CUSTOMER’S DAILY MAINTENANCE

................................................. 1-9

CHAPTER 1

1 - 1



2000 CANON INC. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

I. FEATURES

CanoScan N650U/N656U with 600 x 1200 dpi resolution, CanoScan N1220U with 1200 x

2400 dpi resolution are flatbed image scanners incorporating the following features.

1. High gradation and high image quality are achieved by employing a highly sensitive

contact image sensor with LIDE (LED Indirect Exposure) technology for the scanning unit,

and by reading each RGB color by 14 bits and outputting by 8 bits.

2. The scanner is a small size of 256.0(W) x 372.5(D) x 34.0(H) mm, and a light weight of 1.5

kg by using a downsized scanning unit.

3. The scanner can easily be connected to the host computer through a USB interface.

4. Double hinge structure (Z-lid) enables the document cover to hold a thick document.

5. The scanner can be placed vertically to scan by using an optional stand.

6. The scanner draws its power from USB port on the host computer requiring no AC adapter.

CHAPTER 1

1 - 2



2000 CANON INC. CANOSCAN N650U/N656U/N1220U REV.0 JUNE 2000 PRINTED IN JAPAN (IMPRIME AU JAPON)

II. SPECIFICATIONS

CanoScan N650U/N656U

MAIN UNIT

· Type : Flat bed image scanner

READING UNIT

· Image sensor : 5104 pixels contact image sensor

· Light source : LED indirect exposure (RGB each)

· Max. document size : A4 or Letter (216 x 297 mm)

· Image output : RGB 8 bits per channel (input 14 bits)

· Resolution : 600 x 1200 dpi

· Scan time : 112 sec. (color, A4, 600 dpi)

37 sec. (grayscale, A4, 600 dpi)

16 sec. (preview)

INTERFACE

· Interface : USB 1.1 (B plug) x 1

OTHERS

· Operating environment : Temperature range, 5 to 35°C

Humidity range, 10 to 90%

Air pressure range, 613 to 1013 hPa

· Power consumption : 2.5W (during operation)

· Dimensions : 256.0(W) x 372.5(D) x 34.0(H) mm

· Weight : 1.4 kg

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