CANON PC400 - Service Manual Immediate Download

CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

SERVICE

MANUAL

REVISION 0

FY8-13F2-000

JAN.1998

CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

IMPORTANT

Use of this manual should be strictly

supervised to avoid disclosure of

confidential information.

THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A

SOURCE OF REFERENCE FOR WORK IN THE FIELD.

SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY

SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND

OTHER PRINTED MATTER.

ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE

DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.

THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN

INFORMATION NOT APPLICABLE TO CERTAIN AREAS.

Printed in Japan

Imprimé au Japon

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION

CANON INC.

5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302 Japan

CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

This Service Manual provides information needed to service the plain paper copiers

FC200/PC400(120V model), FC220/PC420(120V model), and PC430(LGL model) in

the field.

The FC200/PC400 differs from the FC220/PC420/PC430 for the following:

INTRODUCTION

This Service Manual consists of the following chapters:

CHAPTER 1, "General Description," introduces the copier's features and specifica-

tions, shows how to operate the copier, and explains how copies are made.

CHAPTER 2, "Basic Operation," provides outlines of the copier's various mechanical

workings.

CHAPTER 3, "Exposure System," discusses the principles of operation used for the

copier's lens drive unit and scanner drive unit. It also explains the timing at which these

drive units are operated, and shows how they may be disassembled/assembled and

adjusted.

CHAPTER 4, "Image Formation System," discusses the principles of how images

are formed. It also explains the timing at which the various units involved in image for-

mation are operated, and shows how they may be disassembled/assembled and adjust-

ed.

CHAPTER 5, "Pick-Up/Feeding System," explains the principles used from when

copy paper is picked up to when a copy is delivered in view of the functions of electrical

and mechanical units and in relation to their timing of operation. It also shows how these

units may be disassembled/assembled and adjusted.

CHAPTER 6, "Fixing System," explains the principles used to fuse toner images to

transfer media in view of the functions of electrical and mechanical units and in relation

to their timing of operation. It also shows how these units may be disassembled/assem-

bled and adjusted.

CHAPTER 7, "Externals/Auxiliary Mechanisms," shows the copier's external parts,

and explains the principles used for the copier's various control mechanisms in view of

the functions of electrical and mechanical units and in relation to their timing of opera-

tion. It also shows how these units may be disassembled/assembled and adjusted.

CHAPTER 8, "Installation," introduces requirements for the site of installation, and

shows how the copier may be installed using step-by-step instructions.

CHAPTER 9, "Maintenance and Servicing," provides tables of periodically replaced

parts and consumables/durables and scheduled servicing charts.

CHAPTER 10, "Troubleshooting," provides tables of maintenance/inspection, stan-

dards/adjustments, and problem identification (image fault/malfunction).

Appendix contains a general timing chart and general circuit diagrams.

Model

Manual pick-up

Multifeeder

FC220/PC420/PC430 Not available

Available

FC200/PC400

Available

Not available

CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

The following rules apply throughout this Service Manual:

1. Each chapter contains sections explaining the purpose of specific functions and

the relationship between electrical and mechanical systems with reference to the

timing of operation.

In the diagrams,

represents the path of mechanical drive

where a sig-

nal name accompanies the symbol

, the arrow indicates the direction of the

electric signal.

The expression "turn on the power" means flipping on the power switch, closing

the front door, and closing the delivery unit door, which results in supplying the

machine with power.

2. In the digital circuits, '1' is used to indicate that the voltage level of a given signal

is "High," while '0' is used to indicate "Low." (The voltage value, however, differs

from circuit to circuit.)

In practically all cases, the internal mechanisms of a microprocessor cannot be

checked in the field. Therefore, the operations of the microprocessors used in the

machines are not discussed: they are explained in terms of from sensors to the

input of the DC controller PCB and from the output of the DC controller PCB to

the loads.

Note:

The descriptions in this Service Manual are subject to change without notice for

product improvement or other purposes, and major changes will be communicated

in the form of Service Information bulletins.

All service persons are expected to have a good understanding of the contents of

this Service Manual and all relevant Service Information bulletins and be able to

identify and isolate faults in the machine.

CANON PC400/420/430,FC200/220 REV.0 JAN.1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

iii

CONTENTS

CHAPTER 1 GENERAL DESCRIPTION

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

II.

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

III. NAMES OF PARTS .....................1-4

External View ..........................1-4

Cross Section .........................1-5

IV. OPERATION ................................1-6

Control Panel ..........................1-6

PC420/430/FC220 .............1-6

PC400/FC200 ....................1-7

Making Copies ........................1-8

C. Jam Indicator.........................1-11

D. Add Paper Indicator ..............1-11

Replacing the Cartridge ........1-11

Time to Replace the Cartridge

.........................................1-11

Replacing the Cartridge ...1-12

Changing the Density ...........1-14

G. Cleaning................................1-14

Copyboard Glass/Copyboard

Cover ...............................1-14

Lens Array .......................1-15

Pick-Up Roller..................1-16

H. When Not Using the Copier for a

Long Time .............................1-16

IMAGE FORMATION .................1-17

A. Outline.....................................1-17

CHAPTER 2 BASIC OPERATION

BASIC OPERATION ....................2-1

Outline ....................................2-1

Outline of Electrical Circuit......2-2

C. Basic Sequence of Operations

(A4, 2 copies)..........................2-3

D. Main Motor Control Circuit ......2-5

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

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

Overcurrent Sensor ...........2-5

Inputs to DC Controller ...........2-6

Inputs to DC Controller (1/2)

...........................................2-6

Inputs to DC Controller (2/2)

...........................................2-7

Outputs from DC Controller ....2-8

Outputs from DC Controller

(1/2) ...................................2-8

Outputs from DC Controller

(2/2) ...................................2-9

CHAPTER 3 EXPOSURE SYSTEM

EXPOSURE/COPYBOARD DRIVE

SYSTEM ......................................3-1

Outline of Exposure System ...3-1

Copyboard Drive System ........3-1

Outline ...............................3-1

Controlling the Copyboard

Drive ..................................3-3

Mechanism of Copyboard

Drive Assembly..................3-4

II.

Controlling the Scanning Lamp....3-7

Outline ....................................3-7

Operations ..............................3-8

Turning the Scanning Lamp

ON and OFF ......................3-8

Controlling the Intensity of the

Scanning Lamp..................3-8

C. Controlling the Intensity of the

Scanning Lamp (VR604) ........3-8

III. MECHANICAL SYSTEM..............3-9

Scanning System ..................3-10

Detaching the Scanning Lamp

Unit ..................................3-10

Copyboard Drive Assembly...3-11

Detaching the Copyboard

Drive Assembly ................3-11