Canon LBP-860 Manuel utilisateur

LBP-860

SERVICE

MANUAL

Canon

PREFACE

This Service Manual contains basic information required for after-sales service of the LBP-860

laser beam printer lhereinafter referred to as the “printer”). This information is vital to the

service trchnirian in maintaining the high print quality and performance of the printer.

The

rasselle

paper feeder and envelope feeder are prepared for the printer as an optional

equipment, which rontenis are also described in this manual.

This manual consists of the following chapters:

Chapter 1: General Desrriplion

Features. specifications. and operation

Chapter 2: Operation

ancl

Timing

A description of the operating principles and timing sequences of the electrical and

mechanical

systems.

Chapter 3: The Mechanical System

Explanation of mechanical operation, disassembly, reassembly, and adjustment

procedures

Chapter 4:

lnstallatlon

Kequirements

for a suitable location, installation procedures, plus the storage and

handling of EP-E cartridges

Chapter 5: Mainlmanre and Servicing

Parts replacement schedule, tools, lubricants. and solvents

Chapter 6: Troubleshooting

Heferenrr values and adjustments: troubleshooting procedures

Appendix:

General timing chart, general circuil diagram, PCB circuit diagrams, etc.

Information in this manual is subject to change as the product is improved or redesigned.

All relevant information in such cases will be supplied in Service Information Bulletins.

A thorough understanding of this printer. based on information in this Manual and Service

Information Bulletins, is required for maintaining its performance and for locating and

repairing the cause of malfunctions.

CONTENTS

CHAPTER 1 GENERAL DESCRIPTION

FEATURES

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

l-l

IV. PARTS OF THE PRINTER . . . . . . . .

l-8

II.

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . .

1-2

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-12

III.

SAFETY INFORMATION..... 1-7

CHAPTER 2 OPERATION AND TIMING

BASIC OPERATION

.................

Functions..

........................

2-l

B. Outline of the Electrical

System

.............................. 2-2

C. DC Controller Input

Signals

..............................

2-3

D. DC Controller Input/

Output Signals

.................. 2-4

E. Basic Sequence of

Operations..

.......................

2-6

II.

LASER/SCANNER SYSTEM..

...

2-7

Outline

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

Scanning Exposure

............

2-S

Laser Control Circuit..

.......

2-10

Scanner Drive..

..................

2-13

III. IMAGE FORMATION SYSTEM

2-15

.Outline..

............................

2-15

Printing Process..

..............

2-17

C. High-Voltage Power Supply 2-23

lV.

PICK-UP/FEED SYSTEM..

.......

2-27

Outline..

............................

2-27

Paper

Size

Detection

.........

2-28

Cassette Feed..

..................

2-29

D. Fixing and Delivery Unit..

2-30

Paper Jam Detection..

.......

2-33

OVERALL CONTROL SYSTEM. 2-35

.Outline..

............................ 2-35

Operation..

........................

2-36

Video Controller PCB..

.......

2-37

Control Panel..

..................

2-40

Self-test..

........................... 2-41

Status/Error Message..

......

2-42

VI.

POWER SUPPLIES

..................

2-55

.Outline..

............................

2-56

Protective System

.............

2-55

VII. ENVELOPE FEEDER

...............

2-56

A. Outline of the Electrical

System..

............................

2-56

B. Pick-up/Feed System

........

2-57

Paper Jam Detection..

.......

2-59

VIII. PAPER FEEDER......................

2-60

A. Outline of the Electrical

System

..............................

2-60

Pick-up/Feed System

........ 2-61

Paper Jam Detection..

....... 2-61

CHAPTER 3 THE MECHANICAL SYSTEM

EXTERNAL8

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

III. PAPER TRANSPORT SYSTEM

3-7

Covers and Panels

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

Paper Pick-up Unit..

...........

3-7

Exhaust Fan..

....................

3-4

Cassette Pick-up Roller..

....

3-Q

Control Panel Unit..

...........

3-5 C. MP Tray Pick-up Roller..

....

3-Q

II.

DRIVE

SYSTEM

......................

3-6 D. Separation Pad

..................

3-10

A. Drive Unit.. ........................

3-6

Paper Delivery Unit

...........

3-10

Main

Motor..

......................

3-6

IV.

EXPOSURE SYSTEM..

............. 3-l 1

Laser/Scanner Unit . . . . . . . . . . .

3-11

ELECTROSTATIC IMAGING/

DEVELOPING/CLEANING

SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-12

EP-E Cartridge . . . . . . . . . . . . . . . . . . .

3-12

B. Transfer Charging Roller.... 3-13

VI.

FIXING SYSTEM . . . . . . . . . . . . . . . . . . . . .

3-14

Fixing Unit

..,..

3-14

VII. ELECTRONIC COMPONENTS . . 3-18

Video Controller Unit . . . . . . . .

3-18

Video Controller PCB..

.......

3-19

DC Controller

PCB

.............

3-20

D. Pick-up Motor Driver PCB.. 3-21

SensorPCB..

...................... 3-21

Power Supply..

...................

3-22

G. High-voltage Power

Supply

PCB........................

3-23

VIII. ENVELOPE FEEDER...............

3-24

IX.

PAPER FEEDER..

....................

3-28

CHAPTER 4 INSTALLATION

CHOOSING A LOCATION..

.......

A. Storage of Sealed

II.

UNPACKING AND Cartridges

.........................

4-6

INSTALLATION

.......................

4-2 B. Storage of Unsealed

111. STORAGE AND HANDLING OF

Cartridges

.........................

4-6

CARTRIDGES

.........................

4-6

Handling Suggestions

........

4-7

CHAPTER 5 MAINTENANCE AND SERVICING

PARTS REPLACEMENT

Standard Tools

..................

5-2

SCHEDULE..

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

Special Tools..

...................

6-3

II.

EXPECTED SERVICE LIVES

LIST OF LUBRICANTS.

OF CONSUMABLES..

............... 5-1

CLEANERS

.............................

5-4

III. PERIODIC SERVICE

VI.

SERVICE CHECKPOINTS

........

5-5

SCHEDULE..

...........................

5-l

VII. MAINTENANCE BY

IV.

LISTS OF TOOL6..

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

CUSTOMER..

..........................

5-7

CHAPTER 6 TROUBLESHOOTING

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . .

6-l

Initial Check . . . . . . . . . . . . . . . . . . . . .

6-l

Basic Procedure . . . . . . . . . . . . . . . . .

6-2

C. How to Use the

Troubleshooting Tables...... 6-3

II.

EXPLANATION FOR SPECIAL

TOOL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-4

Printer Driver Tester . . . . . . . . .

6-4

III. MEASUREMENT AND

ADJUSTMENT

. . . . . . . . . . . . . . . . . . . . . . . .

6-7

Image Adjustment . . . . . . . . . . . . .

6-7

B.Mechanical Adjustment . . . . .

6-7

Electrical Adjustment . . . . . . . .

6-9

IV.

IMAGE DEFECTS . . . . . .

,...........a.

6-14

A. Examples of Image Defects 6-14

B. Troubleshooting Image

Defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-15

TROUBLESHOOTING

MALFUNCTIONS

..,.

. . . . . . . . . . . .

1.1..

6-28

VI. PAPER TRANSPORT

TROUBLESHOOTING

1..

. . . . . . . . . . .

6-42

Print Paper Jams . . . . . . . . . . . . . . .

6-42

B.Incomplete Paper Feed . . . . . .

6-45

VII. LOCATION OF ELECTRICAL VIILVARIABLE RESISTORS,

LEDS,

PARTS/FUNCTION.. . . . . . . . . . . . . . . . .

6-46 TEST PINS, JUMPERS, AND

Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6-46 SWITCHES ON PC BOARDS..... 6-56

B.Sensors and Solenoids . . . . . . .

6-48 A.

DC Controller PCB . . . . . . . . . . . . .

6-56

Motor and Others . . . . . . . . . . . . . .

6-50 B. High-voltage Power

PC Boards . . . . . . . . . . . . . . . . . . . . . . . . . .

6-52

Supply PCB . . . . . . . . . . . . . . . . . . . . . . . .

6-57

Connectors . . . . . . . . . . . . . . . . . . . . . . . .

6-54 C. Pick-up Motor Driver PCB.. 6-58

D. Paper Feeder Driver PCB.... 6-58

APPENDIX

GENERAL TIMING CHART . . . . . . A-l VI.

SENSOR CIRCUIT . . . . . . . . . . . . . . . . . . .

A-l 1

II.

LIST OF SIGNAL6 . . . . . . . . . . . . . . . . . . .

A-3

VII.

PAPER FEEDER DRIVER . . . . . . . . A-12

HI.

GENERAL CIRCUIT . . . . . . . . . . . . . . . . .

A-5

VIII. ENVELOPE FEEDER DFUVER . . A-13

Iv.

DC CONTROLLER . . . . . . . . . . . . . . . . . . .

A-7

IX.

VIDEO CONTROLLER . . . . . . . . . . . . .

A-14

V. PICK-UP MOTOR DRIVER . . . . . . .

A-9

EXPANSION ROM CURCUIT . . . . A-19

CHAPTER 1

GENERAL DESCRIPTION

FEATURE3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

l-l

II.

SF’ECIFICATIONS . . . .

a...

. . . . . . . . . . . .

l-2

III.

ASAFETY

INFORMATION..... 1-7

IV.

PARTS OF THE PRINTER..

...... 1-S

OPERATION.. .......................... 1-12

CHAPTER

1. Non-impact page printer

This non-impart (low-noise) printer

USPS

clectrophotographic, electronic, and laser technology

High print quality through use of

fine

toner and high resolution

I600

dpil

Toner having a particle size half that of conventional Canon loner and higher resolution (600

dpi) produce clearer images.

3. Easy maintenance

The photosensitive drum. toner. primary charging roller, and drum cleaning unit are combined

into

one

replaceable assembly called the “EP-E Cartridge”. By the use of the customer-

replaceable cartridge, high printing quality is maintained by replacing the cartridge and simple

cleaning in

printer.

4. Roller charging/transfer system

Instead of the conventional corona system, a charging roller/transfer system is used for the

charging and

transfer

processw.

The charging roller system considerably reduces the ozone

product-d by the charging system and the roller transfer system makes paper feeding more

slable.

5. Space-saving front loading for paper feed

Front loading is used to make it easier to load paper. This, along with the built-in, mulli-

purpose

tray, reduces the size of the printer and the space it takes

up.

6. Four paper feed methods with various options

Four-way paper

f’eed~ng

is made possible by installing the optional cassette paper feeder

(simply

wiled

the

paper

feeder below) and envelope feeder, in addition to the multi-purpose

tray and cassette.

combining the standard cassette with the paper feeder, up to about 750

sheets of paper

van

loaded in both the upper and lower cassettes for continuous printing.

7. Automatic interface change function

Thr prinlcr has a parallel interface (Cenlronirs) and a serial interface

(RS-232C).

recognizes

the

Lype

(parallel or serial) of data from the computer, and automatically l changes the

interface.

(Automatic interface function)

I-1

CHAPTER

A. Construction

l‘vw

~Desktop

pa@

printer

‘I-intinil.

method

Elcctropholoqaphy

,awr

scanning

syste”,

<ascr

Srmicondurtor

laser

icar,ninc

system

Rotaling

six-faced prism mirror (Scanning mirror)

jczmning

piclr

l<~i?Z”~t~l

600 dots/inch

JwUral

600 rastc-r lines/inch

‘hotosrns~llvr

mrdium

OPC

L’hargint(

Roller

rharging

Exposurr

Laser scanning

roner

Singlr-componrnt

dry

toner

l~rvclop”w”l

‘lbner

projection

dcvclopmrnt

I‘1mrr

supply Included in

replaceabk

EP-E cartridge [The

r&ridge

ran

used to

prin

about 6,000

purges

A4/Letler-sxe

paper. The average print coverage is

m~agc

dot

ralio

with the print density setting in the middle.)

I’apf,r

fwd

Multi-purpose tray feed

Cassrtk

feed [Two

cassetles

ran

be used

when

the paper feeder

insla1led.l

I‘I-~U~Sfil-

Roller

transfer

Srp~~r-;ltK,”

Curvature:

(small drum radius/paper stiffness)

Clrxring

Blade

Fixing

;

Heat

roller (500

[

115 VI

500 w (240

VI)

Print delivery Fare-down

l-2

CHAPTER 1

B. Performance

About 8

pages/min

(A4 or Letter)

24 sor

less

(The

amount of time from when the printer

rer~wes

/PRNT

signal from the video controller when it is ready al an

amhienl

temprralure

of 20°C until the deliver of an

A4/Letler-size

paper.)

less

(115- or 2.40-v power source)

or less

(loo-

220-v power source)

(The

~~l~ount

of time

aflrr

the printer is turned ON until the completion

the

w;un-t~p

tinw at an ambient

temperalure

of 20°C with a rated

voltag

input.)

Plain paper,

colurcd

paprr. lahels. OHP film,

rnvelopes

l’lain

pap”’

from 182 mm X 257 mm to 2

mm X 356 mm (Canon-

approvrd

paprr, 60

g/m’

to 128 g/m”), and

above

type

of paper

I’laitr

paper

of A4. B5, Legal. Letler, or Executive (Canon-approved paper

g/ml

g/m’)

Up lo

mm stack height

(about

100

shrels

of80 g/m’ paper)

A4. Letter.

liniwrsal

(Lc@l,

Letter. A4,

Execuliw,

B5)

IJp

to 25 mm stark height

(aboul

250 sheets of 80 g/m’ paper)

Up lo 25 mm stack height (about 250 sheets of 80

g/m2

paper)

Enwlopr

ferdrr

and paper

leeder

C. Others

Noise levrl (DECLARED

NOISE EMISSIONS in

awordanrr

with

IS0

9296)

L)imrnsions

Wright

32.5’C

(50 to

90.5-F]

20 to

RO”/u

570 to 760

mmHg

Max. about 660 W (at ambient temperature of 20°C and rated

power

source

Volta@)

SOUND POWER

LEVEL

(lB=lO

dB)

6.2 B or less (printin@

4.5 B or less (standby)

SOUND PRESSURE LEVEL 49 dB or less

(printi&

(Bystander positions) 33 dB or less (standby)

424 mm X 4 16 mm X 295 mm (width X depth X heIghtI

17.0 kg (printer). 1.5 kg (cartridge).

I kg (A4 or Letter

cassrttel

100-l I5 V

(50/60

Hz], 220-240 V (50 Hz)

(Voltage

tolerance

ilO%)

1-3

D. Video controller

E. Envelope feeder (Envelope Feeder EF-4)

Standard: Enhanced PCL

(PCL

5e)

Emulahon:

Optional PoslScript’M

2MB (Expandable to 66 Megabytes in total with optional RAM SIMM)

2MU (Expandable

Megabytes in total with optional ROM SIMM)

See table 1-I and 1-2.

See figure l-l.

SlOlS

KS-232C. asynchronous. 300, 600. 1200. 2400, 4800.9600. 19200. or

38400 baud

Data Icngth: 7 or

bits

Parity: 11

desired

Slop bits:

Handshaking: XON-XOFF. ETX-ACK,

DTR

s-bit

parallel

(Ccntronirs

standard) interface

[‘irk

spwd Aboul

env&prs/min

Envrlolx

typ’

COM-

10.

DL. Monarch. C5, B5 (recommended envelope)

~~~~v~~lol~~

size Envelopes from 90mm X 189mm to 178mm X 254mm

i:;lpx

ilv

55 mm stark height (about 75 envelopes)

I’0wer supply ~

DC24V

(SuppIled by the printer)

Dimensions

306.5 X 293 X 127.9 mm (width X depth X height)

Wright About 2.6

kri

Paper feeder (Paper Feeder Unit PF-4s

PF-4L)

Casseile

specifications

Power supply

Dimensions

Wciehl

EP-E Cassette 500 Universal S

[letter,

A4. Executive)

EI’-E

Cassette 500 Universal L (Legal, Letter, A4, Executive)

Up to 50 mm slack height (about 500 sheets of 80 g/m’ paper)

DC24V

(Supplied by the printer)

416 X 470 X 132 mm (width X depth X height) (including legal cover)

About 3.9 ke loauer feedert. about 2 kc (universal cassette1

Specifications are subject to change with product improvement.

l-4

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