Chapter 1: General Descriptions - Canon CANOSCAN N1220U Service Manual

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