Canon IR2020 Series Service-Handbuch

Sep 14 2005

General Timing Chart / General

Circuit Diagram

iR2020/2016 Series

IMPORTANT

　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 the 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.

　Reproduction without permission not allowed.

Use of this manual should be strictly supervised to avoid disclosure of confidential information.

Printed in Japan

Caution

Use of this manual should be strictly supervised to avoid disclosure of confidential information.

Contents

1 General Timing Chart ............................................................................................................................. 1

At Time of Printing................................................................................................................................. 1

Reader Unit ........................................................................................................................................... 2

2 General Circuit Diagram......................................................................................................................... 5

General Circuit Diagram........................................................................................................................ 5

1 General Timing Chart

At Time of Printing

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i

2 Prints, Continuous, Cassette 1

F-1-1

STBYLSTRPRINTWAIT STBY INTR

Static eliminator bias

Main motor

(M204)

Fixing motor

(M201)

Scanner motor

Laser

TOP signal

Cassette 1 pickup solenoid

(SL202)

Cassette feed clutch

(CL202)

Registration paper sensor

(SR209)

Registration clutch

(CL203)

No. 1 delivery sensor

(SR203)

Primary AC bias

Fixing film bias

Primary DC bias

Developing AC bias

Developing DC bias

Transfer bias

Main power switch ON Print command received

*1: Horizontal synchronization control

*2: Automatic photocurrent control (APC)

*3: Cleaning bias

*4: Target temperature control

*5: Temperature control in accordance with the fixing mode

*1 *1 *1

*1 *2

*3 *3

Fixing heater

(H1/H2) *4 *4 *5

Reader Unit

iR2016J / iR2016 / iR2020 / / iR2016i / iR2020i

Basic Sequence of Operation (in response to a press on the start key; book mode; 1 original)

F-1-2

Basic Secure of Operation (in response to a press on the start key; ADF mode, 1 original )

F-1-3

SCRWSCFWSTBY STBY

: Backward movement

: Forward movement

Start key

Reader motor

(M401)

LED

CISHP sensor

(SR401)

Leading edge

of original

Shading

position Shading

position

Trailing edge

of original

Shading correction

SCFWSCRWSTBY STBY

: Backward movement

: Forward movement

Start key

Reader motor

(M401)

LED

CISHP sensor

(SR401)

Stream reading

position Trailing edge

of original

Shading

position Shading

position

Shading correction

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