Canon PC880, PC860 Service Manual

REVISION 0

PC860

F13-8491 TYA00001-

PC880

F13-8291 TZA00001-

PC890

F13-8242 UAA00001-

PC920

F13-8431 TVB00001F13-8441 PUD00001-

PUE00001-

F13-8461 PUH00001-

PC921

F13-8432 TVC00001-

PC940

F13-8436 TVD00001-

PC941

F13-8437 TVE00001-

PC950

F13-8231 TVF00001F13-8241 PUF00001-

PUG00001-

PC960

F13-8434 TVG00001-

PC980

F13-8232 TVH00001-

PC981

F13-8233 TVJ00001-

AUG. 1999

FY8-13GA-000

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 INFORMA TION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY. THIS DOCUMENT ATION IS INTENDED FOR ALL SALES AREAS, AND MA Y CONTAIN INFORMATION NO T APPLICABLE TO CERTAIN AREAS.

Printed in Japan

Imprimé au Japon

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

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION

CANON INC.

5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302-8501 Japan

INTRODUCTION

This service manual has been prepared for the PC800/900 Series machines, providing basic information used for servicing the machines in the field so as to ensure their quality and performance.

This service manual consists of the following chapters: Chapter 1

Chapter 2 Chapter 3

Chapter 4

Chapter 5

Chapter 6

General Description

names of parts, and how originals are reproduced.

Basic Operation Exposure System

machine's exposure system. It also explains the timing at which exposurerelated mechanisms are operated, and shows how they may be disassembled/assembled and adjusted.

Image Formation System

machine's image formation system. It also explains the timing at which image formation-related mechanisms are operated, and shows how they may be disassembled/assembled and adjusted.

Pick-Up/Feeding System

machine's pickup/feeding system. It also explains the timing at which pickup/ feeding-related mechanisms are operated, and shows how they may be disassembled/assembled and adjusted.

Fixing System

fixing system. It also explains the timing at which fixing-related mechanisms are operated, and shows how they may be disassembled/assembled and adjusted.

discusses the principles of operation used for the machine's

introduces the machine's features, specifications,

explains how copies are made on a step-by-step basis.

discusses the principles of operation used for the

Chapter 7

Chapter 8

Chapter 9

Chapter 10

Chapter 11

Appendix contains a general timing chart and general circuit diagrams.

Externals/Auxiliary Mechanisms

for the machine's externals/auxiliary mechanisms. It also explains the timing at which auxiliary mechanism-related mechanisms are operated, and shows how they may be disassembled/assembled and adjusted.

ADF

explains the principles of operation of the ADF in view of electrical and mechanical functions and in relation to their timing of operation. It also shows how the unit may be disassembled/assembled and adjusted.

Installation

how the machine may be installed using step-by-step instructions.

introduces requirements for the site of installation, and shows

Maintenance and Servicing

consumables/durables and scheduled servicing charts.

Troubleshooting

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

provides tables of maintenance/inspection, standards/

discusses the principles of operation used

provides tables of periodically replaced parts and

i

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, accompanies the symbol

represents the path of mechanical drive—where a signal name

, 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.

The descriptions in this Service Manual are subject to change without notice for product improvement or other reasons, 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.

ii

• This service manual covers the models shown in the following table. Be sure to have a good understanding of the difference from model to model before referring to this manual.

Model

PC860 PC880 PC890 PC920 PC920 PC920 PC920 PC921 PC940 PC941 PC950 PC950 PC950 PC960 PC980 PC981

Type code

TYA

TZA

UAA

PUD

PUE PUH TVB TVC TVD TVE

PUF PUG

TVF TVG TVH

TVJ

Multi-

feeder

√ √

√ √ √ √ √ √

Single feeder

√

√ √ √ √ √ √ √

Zoom

√ √ √ √ √ √ √

√ √

√ √ √ √

Default

ratio

2R2E 2R2E 2R2E 2R2E 2R2E 2R2E 3R1E 3R1E 3R1E 3R1E 2R2E 2R2E 3R1E 3R1E 3R1E 3R1E

Density

correction

switch

(SW101)

√ √ √ √ √ √

√ √

The notation “√” indicates that the item in question is available.

ADF

as

standard

√

√ √ √

Cassette

250 sheets 250 sheets 250 sheets

Universal Universal Universal Universal Universal Universal Universal Universal Universal

500 sheets

Universal 500 sheets 500 sheets

Copying

speed

(cpm) at

Direct

12 12 12 10 10 10 10 10 13 13 12 12 13 10 13 13

iii

iv

CHAPTER 1

GENERAL DESCRIPTION

This chapter provides specifications of the machine, instructions on how to operate

the machine, and an outline of copying process.

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

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

A. Copier....................................1-2

B. ADF .......................................1-8

III. NAMES OF PARTS................... 1-10

A . External View ..................... 1-10

B. Cross Section..................... 1-13

IV. USING THE MACHINE ............. 1-15

A. Control Panel...................... 1-15

V. ROUTINE MAINTENANCE

BY THE USER .......................... 1-17

VI. IMAGE FORMATION ................ 1-20

A. Outline ................................ 1-20

CHAPTER 1 GENERAL DESCRIPTION

I. FEATURES

1. Personal Copier with a Zoom Function and a Fixed Copyboard

• You can choose either a default enlargement/reduction ratio or any ratio between 70% and 141% in 1% increments.

2. Ecology-Conscious

• The use of a roller charging method has resulted in a considerable reduction of ozone: 0.01 ppm or less on the average, 0.02 ppm or less at maximum (1/100 to 1/1000 compared with existing Canon machines).

3. SURF Fixing Assembly

• The wait time is 0 sec (at 20°C room temperature), enabling speedy copying work immediately after power-on.

4. Various Paper Sizes

• The paper may be between A4 (LGL) and A5 (STMT) (*Using the universal cassette).

• In manual feed mode, paper may be as large as A4 (LGL) or as small as a business card.

5. All-in-One Cartridge for Simple Maintenance

• The photosensitive drum, toner case, charging roller, developing assembly, and cleaning assembly are constructed as a single entity (cartridge). The user may expect quality copy images at all times as long as he/she performs simple replacement/cleaning work.

6. Large Paper Source

• The source of paper may contain as many as 550 sheets of paper (500-sheet cassette + multifeeder; multifeeder type).

7. Separate top unit

• The machine’s top unit may be opened to make jam removal easy.

8. ADF Type

• Continuous copying is possible with the use of the ADF.

1-1

CHAPTER 1 GENERAL DESCRIPTION

II. SPECIFICATIONS

A. Copier

1. Type

Item

Body

Copyboard

Source of light

Lens

Photosensitive medium

2. Mechanisms

Item

Reproduction

Charging

Exposure

Descriptions

Desk top

Fixed

Halogen lamp (80 V/110 W for 120V-model; 150 V/160 W for 220/240 V-model)

Fixed focal point lens

OPC drum (24-mm dia.)

Table 1-201

Descriptions

Indirect static reproduction

Roller (direct charging)

Slit (moving light source)

Copy density adjustment

Development

Pickup

Separation

Fixing

Cleaning

Original orientation

Auto or manual

Dry (toner projection)

Cassette (1 pc.) Single-feeder (single-feeder type) Multifeeder (multifeeder type)

Curvature separation + static eliminator

Flat heater

Blade

Center reference (copyboard)

Table 1-202

1-2

3. Performance

CHAPTER 1 GENERAL DESCRIPTION

Item

Original type

Maximum original size

Reproduction ratio

Zoom

Wait time

First copy time

Continuous copying

Copy size

Copy paper type

Descriptions

Sheet, book, 3-D object (2kg max.) A4 (297 × 210 mm)/LGL (216 × 356 mm)

Inch/AB-configuration: 2R2E Inch-configuration: 3R1E

70% to 141% (in 1% increments*1)

0 sec (at 20°C room temperature)

10 sec or less (at 20°C room temperature; Direct, non-AE, from the cassette)

100 (max.) A4/LGL (297 × 210 mm/216 × 356 mm max.)

Business card (90 × 55 mm, min.)

Cassette:

2

Plain paper (64 to 80 g/m B5R), colored paper, recycled paper (64 to 80 g/m B5R), eco paper (80 g/m

), tracing paper (SM-1, A4R/

2

; A4R)

2

; A4R/

Manual Feeder:

2

Plain paper (52 to 128 g/m

*2

; A4R/B5R), transparency

80 paper, business card (200 g/m LTRR), recycled paper (64 to 80 g/m

2

per (80 g/m

; A4R), postcard

), tracing paper (SM-1, GNT-

*2,*4

(A4R/LTRR*3), colored

2

or less), label sheet*2 (A4R/

2

*3

; A4R/B5R), eco pa-

Double-Sided/Overlay Copying*5:

2

Plain paper (64 to 128 g/m (200 g/m

2

or less), recycled paper (64 to 80 g/m2; A4R/

B5R), eco paper (80 g/m

), colored paper, business card

2

; A4R), postcard

*3

Cassette

With claws Universal cassette (250 sheets of 80 g/m

2

paper; A4/LGL to

A5/STMT)

2

)

2

)

2

)

Multifeeder tray

Copy tray

Non-image width

250-sheet cassette (250 sheets of 80 g/m 500-sheet cassette (500 sheets of 80 g/m

5 mm deep (approx.; 50 sheets of 80 g/m

100 sheets (A4; 80 g/m

2

)

Leading edge: 2.0 ±1.5 mm (Direct; 4.0 mm or less otherwise) Left/right: 0.0 +2.0, -0.0 mm (0 +4.0, -0.0 mm for LTR)

Auto power-off

Provided (5 min, approx.; fixed)

*6

Table 1-203

1-3

CHAPTER 1 GENERAL DESCRIPTION

*1. Applies only to models with a zoom function. *2. Applies only to single pickup if the multifeeder is used. *3. Applies only to vertical feeding. *4. Upon delivery, be sure to remove each from the copy tray. *5. Be sure to remove any curling before feeding for a second time. *6. If stopped because paper ran out during copying operation, 1 hr.

1-4

4. Others

CHAPTER 1 GENERAL DESCRIPTION

Item

Operating condition

Temperature Humidity Atmospheric pressure

Power source

Serial number

Maximum power consumption

Noise

Descriptions

7.5°C to 32.5°C/44.5°F to 90.5°F 5% to 85% RH

607.95 to 1013.25 hPa (0.6 to 1 atm)

120 V 60 Hz 220/240 V 50 Hz, 60 Hz

TVBxxxxx PUDxxxxx PUHxxxxx TVCxxxxx PUExxxxx TVDxxxxx PUFxxxxx TVExxxxx PUGxxxxx TVFxxxxx TYAxxxxx TVGxxxxx TZAxxxxx TVHxxxxx UAAxxxxx TVJxxxxx

0.9 kW or less Standby: 1.2W (approx.; about 5min; reference only) Copying: 0.4kWh (approx.; reference only)

Standby: -(sound power level by ISO) Copying: (sound power level by ISO)

• Single-feeder type: 68 dB or less

• Multifeeder type: 66 dB or less

Ozone

Dimensions (WxDxH)

Weight (including the cassette)

Consumables

*1. 250-sheet cassette type *2. 500-sheet cassette type

0.01 ppm or less (average; 0.02 ppm or less, max.)

Copyboard Type

484.9 × 448.2 × 297.5 mm

*1

/ 329.0 mm

19.1 in. × 17.6 in × 11.7 in*1/ 13.0 in

*2

ADF Type

*1

484.9 × 448.2 × 358.3 mm

/ 389.8 mm

19.1 in × 17.6 in × 14.1 in*1/ 15.3 in

*2

Copyboard Type

Single-feeder type: 19.3 kg

*1

/ 42.5 lb*1, 20.9 kg*2/ 46.0 lb

Multifeeder type: 19.5 kg*1/ 42.9 lb*1, 21.1 kg*2/ 46.4 lb

ADF Type

Single-feeder type: 23.8 kg

*1

/ 52.4 lb*1, 25.2 kg*2/ 55.4 lb

Multifeeder type: 24.0 kg*1/ 52.8 lb*1, 25.4 kg*2/ 55.9 lb

Copy paper: Keep wrapped, and protect against humidity. Toner: Avoid direct sunlight, and store at 40°C/104°F, 85%

or less.

Table 1-204

*2 *2

1-5

CHAPTER 1 GENERAL DESCRIPTION

5. Default Ratios

Direct

Reduce I

Reduce II

Reduce III

Reduce IV

Enlarge I

Enlarge II

Item

2R2E (Inch/AB-configuration)

1:1.000

1:0.707

1:0816

1:1.154

1:1.414

Table 1-205

3R1E (Inch-configuration)

1:1.000

1:0.707

1:0.786

1:0.860

1:1.414

1-6

6. Copying Speed

CHAPTER 1 GENERAL DESCRIPTION

Copying speed

at Direct

13

12

10

Reproduction ratio

Direct

Reduce I (70.7%)

Reduce II (78.6%)

Reduce IV (86.0%)

Enlarge II (141.4%)

Direct

Reduce I (70.7%)

Reduce III (81.6%)

Enlarge I (115.4%)

Enlarge II (141.4%)

Direct

Reduce I (70.7%)

Reduce III (81.6%)

Enlarge I (115.4%)

Enlarge II (141.4%)

Direct

Reduce I (70.7%)

Reduce II (78.6%)

Reduce III (86.0%)

Enlarge II (141.4%)

Copy size

LTRR

LGL

STMTR

MIN

LGL → LTRR

MARJIN

MAX

A4R

B5R

A5R

A4R → A5R B5R → A5R B5R → A4R

A5R→ A4R

A4R

B5R

A5R

A4R → A5R B5R → A5R B5R → A4R A5R → A4R

LTRR

LGL

STMTR

MIN

LGL → LTRR

MARJIN

MAX

Number of copies

*1

( Multifeeder

)

(Copies / min)

13 (9) 11 (8) 13 (9) 13 (9) 13 (9) 13 (9) 10 (9) 12 (9) 12 (9) 12 (9) 12 (9) 12 (9) 12 (9) 10 (9) 10 (9) 10 (9) 10 (9) 10 (9) 10 (9) 10 (9)

10 m(9)

10 (9)

9 10 (9) 10 (9) 10 (9) 10 (9)

9

Table 1-206

*1. The number of copies starting with the pickup operation that follows the delivery of the

19th copy in a continuous copying job. (See p.5-8)

The specifications are subject to change for product improvement.

1-7

CHAPTER 1 GENERAL DESCRIPTION

B. ADF

Item

Original pickup

Original orientation

Original position

Original separation

Original type

Stack

Original processing mode

Original size detection

Mixed original sizes

Descriptions

Auto pickup/delivery

Face-down

Center reference

Top separation

Single-sided (50 to 128 g/m

2

) A5 (STMT) to A4R (LTRR), LGL Length: 139.7 to 355.6 mm (feeding direction) Width: 139.7 to 215.9 mm

30 sheets (80 g/m

2

or less; about 3 mm in height)

Single-sided original to single-sided copy

Yes (in feeding direction)

No

Original detection

Original feeding speed

Communication with host

Dimensions

Weight

Power source

Maximum power consumption

Operating environment

Yes

446 mm/sec

IPC

Width: 474 mm/ 18.7 in.

(659 mm/ 25.9 in. with the tray open) Depth: 394 mm/ 15.5 in. Height: 74 mm/ 2.9 in. (216 mm/ 8.5 in. with the tray open)

5 kg/ 11 lb (approx.)

24 VDC and 5 VDC (from the host)

40 W or less

Temperature: same as the host Humidity: same as the host

Table 1-207

1-8

*1. The following may not be used as an original:

• Sheet with a staple, clip, or glue.

• Sheet with a cut, hole, or tear.

• Sheet with holes for binding.

• Sheet with a carbon back.

• Sheet with a cut-and-paste piece.

• Sheet with curling, bending, or wrinkling.

The specifications are subject to change for product improvement.

CHAPTER 1 GENERAL DESCRIPTION

1-9

CHAPTER 1 GENERAL DESCRIPTION

III. NAMES OF PARTS

A. External View

1. Copyboard Type

[1] Copyboard cover [2] Static eliminator cleaner [3] Manual feed tray

[6]

[5]

[1]

[2]

[3]

[4]

[4] Right door [5] Cassette [6] Copyboard glass

Figure 1-301

[3]

[2]

[1]

[6]

[1] Copy tray [2] Power cord connector [3] Open/close lever

[4]

[5]

[4] Static eliminator [5] Copy density correction switch [6] Delivery guide plate

Figure 1-302

1-10

2. ADF Type

CHAPTER 1 GENERAL DESCRIPTION

[1]

[5]

[2]

[4]

[1] ADF [2] Manual feed tray [3] Right door

[5]

[4]

[3]

[4] Cassette [5] Copyboard glass

Figure 1-303

[6]

[7]

[2]

[1]

[1] Static eliminator cleaner [2] Delivery guide plate [3] Copy tray

[5] Open/close lever [6] Static eliminator [7] Copy density correction switch

[4] Power cord connector

Figure 1-304

1-11

CHAPTER 1 GENERAL DESCRIPTION

3. ADF

[2]

[3]

[4]

[1]

[1] Original tray [2] Original delivery tray

[3] Slide guide [4] Auxiliary tray

Figure 1-305

1-12

B. Cross Section

1. Body

[1]

[2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14]

CHAPTER 1 GENERAL DESCRIPTION

[28] [27] [26] [25] [24] [23] [22] [21] [20] [19] [18] [17] [29][16] [15]

[1] No. 3 mirror [2] No. 2 mirror [3] No. 1 mirror [4] Scanning lamp [5] Heat exhaust fan [6] Copyboard glass [7] Side blanking lamp [8] Lens [9] Primary charging roller [10] No. 6 mirror

[11] Cartridge [12] No. 4 mirror [13] No. 5 mirror [14] Multifeeder tray [15] Vertical path roller [16] Multifeeder pickup roller [17] Cassette pickup roller [18] Registration roller [19] Developing cylinder [20] Photosensitive drum

Figure 1-306

[21] Transfer roller [22] Feed belt [23] Cassette [24] Fixing upper unit [25] Fixing lower roller [26] Cleaning roller [27] Delivery roller [28] Copy tray [29] Single-feeder pickup roller

1-13

CHAPTER 1 GENERAL DESCRIPTION

2. ADF

[6][5][4][3][2][1]

[13] [12]

[1] Delivery roller [2] Copy tray [3] Pickup roller 2 [4] Pickup roller 1 [5] Copyboard tray [6] Auxiliary tray [7] Guide plate

[11] [9] [8] [7][10]

[8] Separation pad [9] Registration roller [10] Feed belt drive roller [11] Feed belt [12] Feed belt roller [13] Feed belt link slave roller

Figure 1-307

1-14

IV. USING THE MACHINE

A. Control Panel

CHAPTER 1 GENERAL DESCRIPTION

No.

1

2

3

4

[15] [14] [12] [10][11][13]

Name

Copy density adjusting lever

Copy density mode indicator

Default ratio indicator

Paper selection indicator

*1

[5][4][3][2]

Figure 1-401

Description

Adjusts the density of copies manually.

Indicates the selected copy density mode.

Indicates the selected default ratio.

Indicates the selected cassette/ manual feed tray.If there is no paper loaded, it flashes.

[8] [9][7][6][1]

Remarks

5

Jam indicator

6

Count/ratio indicator

Flashes in response to a jam.

• Indicates the number of copies or reproduction ratio.

100 (max.; continuous copying)

• The symbol “%” turns on when indicating a ratio.

7

Clear/stop key

Stops copying or returns copying mode to standard mode.

Standard Mode Ratio: 100% Count: 1 Paper source: cassette Copy density: auto

8

Copy start key

9

Power switch

Starts copying.

Turns on and off the power.

mode

1-15

CHAPTER 1 GENERAL DESCRIPTION

No.

10

Name

Count/zoom set key

Sets the number of copies or a

Description

zoom ratio.

11

Zoom indicator

*2

Turns on when zoom mode is selected.

12

13

Zoom key

*2

Paper selection key

*1

Selects/deselects zoom mode.

Selects the cassette/ manual feed tray.

14

Default ratio key

Selects a default reproduction ratio.

15

Copy density mode selection

Selects copying density mode.

key

Table 1-401

*1. Applies only to a multifeeder model. *2. Applies only to a model equipped with a zoom function.

Remarks

May be between 70% and 141% in 1% increments.

1-16

CHAPTER 1 GENERAL DESCRIPTION

V. ROUTINE MAINTENANCE BY THE USER

Instruct the user to clean the following if images tend to be soiled or copy paper tends to jam

often.

1. Soiled Images

a. Copyboard Glass/Copyboard Cover

Clean the cover with a moist cloth (with water or mild detergent solution); then, dry wipe it.

b. Feeding Belt (ADF type) b.1 Cleaning in Feeder Cleaning Mode

1) Turn on the machine, and hold down the Copy Density Mode Selection key for 4 sec or more.

• The count/ratio indicator will indicate ‘U6’.

Zoom

Figure 1-501

2) Place about 10 sheets of blank copy paper (A4/LTR) on the original tray of the ADF.

3) Press the Copy Start key.

• Copy paper will be fed from the original tray.

• The indicator flashes ‘U6’ while the feeder is being cleaned.

4) Press the Copy Density Mode Selection key to end the mode.

Caution:

• You cannot start feeder cleaning mode while the machine is making copies or if an error

exists.

• The auto power-off mechanism does not operate while feeder cleaning mode is being

executed.

1-17

CHAPTER 1 GENERAL DESCRIPTION

b.2 Cleaning by Hand

1) Wipe the feed belt with a moist cloth (water or mild detergent solution) in the direction of the arrow in the figure; then, dry wipe it.

Figure 1-502

2. If Jams Occur Frequently

a. Static Eliminator

1) Remove the static eliminator cleaner from the machine.

Figure 1-503 (Copyboard type)

1-18

Canon PC880, PC860 Service Manual

CONTENTS

CHAPTER 1

I. FEATURES

II. SPECIFICATIONS

III. NAMES OF PARTS

IV. USING THE MACHINE

V. ROUTINE MAINTENANCE BY THE USER