Canon GP160, Gp-160F, Gp-160DF Service Manual faxboardG1

Super G3 FAX Board-G1

This service manual describes the following items:

• Product quality and functions of the fax function provided with this unit.

• Basic information required in performing field service of the fax function. For inf ormation on basic inf ormation required in maintaining product quality and func-

tions as well as performing field service, refer to the service manual supplied with the unit.

Each chapter consists of the following sections: Chapter 1, “Introduction,” : Product overview, Specifications, Precautions to be taken

in servicing.

Chapter 2, “Operation overview,” :Basic operation, Description of functions. Chapter 3, “Mechanical system,” : Modem board, NCU board, modular board. Appendix : General circuit diagram. Changes of the contents made for the sake of product improvements will be notified

in Service Information (Technical Information) whenever such changes are made.

Gaining a sound and thorough understanding of the unit through careful reading of

this service manual and the subsequently issued Service information (Technical information) bulletins is the only wa y to de v elop the technical skill necessary to maintain product quality and functionality and the practical ability to be able to determine the cause of breakdowns.

i

INTRODUCTION

ii

iii

CHAPTER 1

INTRODUCTION

I. PRODUCT OVERVIEW ...........................1-1

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

A. Standards and performance ..............1-2

III. NAMES OF PARTS..................................1-7

A. Fax function layout.............................1-7

IV. CONTROL SECTION...............................1-8

A. Control panel......................................1-8

B. Master password................................1-9

V. PRECAUTIONS TO BE TAKEN IN

SERVICING............................................1-10

A. Battery backup function ...................1-10

B. Backup data types ...........................1-12

C. Pr inting backup data information

lists...................................................1-14

D. Printing transmitted image data.......1-14

E. Transfer print of received image

data..................................................1-14

F. Data that can be deleted/initialized

in service mode................................1-15

This chapter provides an outline of product specifications, operation procedures and

precautions to be taking in servicing.

CHAPTER 1 INTRODUCTION

1-1

I. PRODUCT OVERVIEW

This unit is equipped with an image processing function and a telephone-line based communications function, to allow a black-and-white digital copier to operate also as a facsimile transmitter. Supporting the V.34 standard as recommended by ITU-T, the builtin modem provides a maximum image transfer rate of 33.6 kbps.

Figure 1-101

Modular board

NCU board

Image processor PCB

Modem board

Fax

Public switched telephone network

Main Unit

CHAPTER 1 INTRODUCTION

1-2

II. SPECIFICATIONS

A. Standards and performance

The standards and performance for this machine are listed below. Those for scanner

and printer conform to those for the copier.

1. Communication section

*:When standard Canon Fax chart no.1 is used.

Item Applicable line Number of access lines Communication method Transmission rate (bps)

Modulation system (image transmission)

Modulation rate (Baud rate) G3 protocol signal

Encoding system Transmission control

protocol Canon original

compression system Transmission output level Minimum reception

sensitivity level Modem IC Compatibility Error correction function Transmission time*

Description PSTN PSTN: 1 line Half-duplex, full duplex (V.34)

33.6 k, 31.2 k, 28.8 k, 26.4 k, 24.0 k, 21.6 k,19.2 k,16.8 k,14.4 k,12.0 k, 9.6 k, 7.2 k, 4.8 k, 2.4 k (bps)

ITU-T V.34 (33.6 kbps to 2.4 kbps), ITU-T V33 (14.4 k/12.0 kbps) ITU-T V.17 (14.4 k/12.0 kbps/TC 9.6 k/TC 7.2 kbps) ITU-T V.29 (9.6 k/7.2 kbps), ITU-T V.27 ter (4.8 k/2.4 kbps)

2.400, 3.000, 2.743, 2.800, 3.429 (only in V.34 mode) ITU-T V.21 (300 bps)

ITU-T V.34 (1200 bps) MMR, MR, MH ITU-T T.30 binary protocol/ECM method

ITU-T V.8 protocol /ECM method Hyper control 1

-8 to -15 dBm

-43 dBm

Rockwell R288F G3 (G2/G1/MF are not supported) ITU-T ECM method ECM-MMR/33.6 kbps: within the 2 sec range

ECM-MMR/14.4 kbps: approx. 6 sec ECM-MMR/9.6 kbps: approx. 9 sec G3 MH/14.4 kbps: approx. 9 sec G3 MH/9.6 kbps: approx. 13 sec G3 MR/9.6 kbps: approx. 12 sec G3 MR/14.4 kbps: 8 sec

CHAPTER 1 INTRODUCTION

1-3

2. Scanning system

3. Recording system

4. Memory

Item

Transmission document size

Scanning density

Scanning density adjustment

Half tone

Description

A3, A4, A4R, A5, A5R, B4, B5, B5R LTR, LTRR, LGL, 11

×

17 ADF: document width 297 mm/length 1 m book scanning: document width 297 mm/length ×420 mm

Standard 200

×

100 dpi (8 dot/mm ×3.85 lines/mm)

Fine 200

×

200 dpi (8 dot/mm ×7.7 lines/mm)

Super fine 200

×

400 dpi (8 dot/mm ×15.4 lines/mm)

Ultra fine 400 ×400 dpi (16 dot/mm ×15.4 lines/mm) 3-levels (user mode density adjustment:9 levels)

Photo mode (256 gradations) text/photo mode (Auto adjust)

Item

Transmission document size

Maximum reception size Scanning density

(recording)

Description

A3, A4, A4R, A5, A5R, B4, B5, B5R LTR, LTRR, LGL, 11 ×17

A3 (297 ×420 mm) during reception: 600 dpi

×

600 dpi

Item

Image memory

Power outage backup memory

Description

Standard 1 MB (approx.64 pages: when standard Canon Fax

chart no. 1 is used)

Expanded memory (accessory): 8 MB (max. 9 MB; approx.576

pages)

Method: Vanadium-lithium secondary battery Backup life: approx.3 hours (after 1 day continuous power) Data backed up: image data memory, work area

CHAPTER 1 INTRODUCTION

1-4

5. Transmission functions

6. Dialing

Item Memory transmission Direct (manual)

transmission Batch transmission

Memory polling transmission

Confidential mailbox function (specific address transmission)

Delayed transmission Batch transmission

by address Mail post transmission

Delayed transmission Completion stamp

Dual access Error re-transmission

Description Yes (approx.64 pages/with expanded memory: 576 pages Yes

Up to 210 addresses (one-touch: 84, speed dialing: 116, numeric key dialing:10)

Yes, memory box function

Confidential mailbox function with specific address transmission (ITU-T standard)

Yes Yes

Delayed batch transmission by address, up to 200 (one-touch and speed dialing)

Up to 210 addresses (maximum 70 transactions) Yes

Scanning completion stamp Yes Yes (memory reference)

Item

One-touch dialing

Speed dialing

Group dialing Numeric key dialing Automatic redialing

Description 84 addresses consisting of up to 120 digits (telephone numbers)

16 characters (other party ID) 116 addresses consisting of up to 120 digits (telephone numbers)

16 characters (other party ID) 119 group (one-touch, speed dialing possible) On hook/off hook 2 min (programmable within a range of 2 minutes to 99 minutes)

2 times (programmable within a range of 1 to 15 times)

CHAPTER 1 INTRODUCTION

1-5

7. Reception functions

Item Manual reception Confidential reception Memory reception

Forced memory reception Rotation reception Number of reception

copies Reception image

reduction

Cassette switches (A, B, C, D)

Reception sort print N on one reception?

Transfer Remote reception Memory box function

Linear reproduction output

Multi-polling reception Fixed time multi-polling

reception

Description Yes Yes, confidential mailbox function using memory mailbox Yes, approx.64 pages (with standard 1 MB memory)/approx.

576 pages (with 8 MB expanded memory) Yes Yes 1 (programmable between 1 to 99)

Yes, reduction ratio: 97%, 95%, 90%, 75%

utomatic/fixed selectable eduction orientation: both vertical and horizontal/vertical selectable

A: split recording (same series) B: margin recording (same series) C: reduction recording (different series) D: margin recording (printed on paper larger than reception doc-

ument) Yes A5+A5 →A4, B5+B5 →B4, A4+A4 →A3, LTR+LTR → 11×17

(N is up to 5 when short length documents are used)? Yes, time programmable, destination restriction available Yes Confidential mailbox, relay broadcast, fixed time polling, polling,

memory mailbox, ?transfer? Yes, reduces long length documents between the range of 75%

to 100%. Up to 210 addresses 5 time settings only

CHAPTER 1 INTRODUCTION

1-6

8. Activity management function

Specifications are subject to change for the sake of product improvements.

Item

Reports User data

Service data

Memory reference

Department management

Description

Activity report (40 transactions) Tx report Rx report Memory clear report Document memory list 1-touch list 1 Coded dial list 1

Group dial list User data

Confidential Rx report Memory box report

System data list System dump list Key input history report (used by Design dept.)

The following functions are available:

• List of documents in memory

• Re-transmission

• Reservation transmission list ( reservation transmissions deletable)

• Memory clear

Department code, subaddress (4 digit number)

CHAPTER 1 INTRODUCTION

1-7

III.NAMES OF PARTS

A. Fax function layout

Figure 1-301

Image processor circuit board

Modem board

NCU board

Modular board

CHAPTER 1 INTRODUCTION

1-8

IV. CONTROL SECTION

A. Control panel

1. Control panel

[1] Display contrast VR [2] Collate key [3] Copy special features key [4] COPY key [5] FAX key [6] Print/Scan key [7] Display selection key [8] Return key [9] Set key [10] FAX monitor/ transmission interrupt

key [11] Program key [12] Speed dial key

[13] On-hook key [14] R key [15] Redial key [16] Stamp key [17] Direct key [18] Reset key [19] Data registration key [20] Numeric keys [21] Clear key [22] Start key [23] Stop key [24] Energy saver key [25] 1-touch speed dialing keys

Figure 1-401

[12]

[5]

[6][10][11]

Error

Fax Monitor

Program

Reset

Data Registration

[1] [2] [3]

Copy Special Features

[4]

In Use/Memory

Return Set

[18]

[7]

[8]

[9]

[19]

[13][14]

Coded

Hook

Dial

ABC

JKL MNO

GHI

TUV WXY

PRS

OPER SYMBOLS

Tone

[20]

[15]

[17]

[16]

Direct

RedialR Stamp

TX

Clear

DEF

Start

[21]

Stop

[23]

1

2 3 4 5 6 7

9

8

10

11

16

15

17

18

23

22

24

25

[25]

14

13

12

21

20

19

28

27

26

57 ~ 84

[22]

Energy Saver

[24]

29 ~ 56

CHAPTER 1 INTRODUCTION

1-9

Figure 1-402

B. Master Password

Passwords include those required when changing or deleting confidential mailboxes, memory boxes and other mailbox settings as well as passwords used for department management.

The master password, which is used in servicing and when the user has forgotten the password, is shown below.

Slide switch (Normally off for user operation)

The master password is to be used by servicemen only and must not be disclosed to the user. Master password:4559769

Caution:

Delayed Transmission key Report key Polling key Confidential Mailbox Relay Broadcast key Clear key Pause key Set key Delete key TTI Selector key Memory Box key Subaddress key Memory Reception key Password key Transfer key Receive mode key Space key Tone/+ key Memory Reference key D.T. key

(▲) (▼) () () key

▲

Speaker volume switch

Delayed Transmission

Memory Box

Memory

Reference

TTI Selector

Confidential

Polling

Memory

Reception

Report Clear Set

Subaddress Password

Mailbox

Transfer Space

Relay

Broadcast

Receive

Mode

Pause

Tone/+

D.T.

Delate

CHAPTER 1 INTRODUCTION

1-10

V. PRECAUTIONS TO BE TAKEN IN SERVICING

A. Battery backup function

This unit is provided with a function for backing up data stored in the unit during a power outage and when the main power supply has been turned off. Consequently, no data are deleted when the power is turned off (temporary storage).

The backup battery is a vanadium-lithium secondary battery that can backup image data for up to 3 hours if the unit has been on continuously for one day or longer under normal room temperature and humidity conditions. When the data backup time is less than half, even though these conditions are met, the battery has reached the end of its service life or the ambient environmental conditions are not as required.The battery will be depleted when it has been fully charged and discharged more than 40 times (at 25°C). The image data are deleted when the batter y backup time is exceeded.The service life of the lithium battery is 5 years. Image data will also be deleted when the jumper plug (JP1) on the image processor PCB is moved from the ON position, even when the battery is backing up the data.

Note that the jumper plug (JP1) on the image processor PCB is set to OFF at the factory at time of shipment, to prevent battery depletion.The jumper plug (JP1) must be set to ON when the image processor circuit is replaced.

To prevent possible image data loss, be sure to print all image data stored in the unit when turning it off prior to service.

Caution:

Memory type Backup battery type

Control memory

Lithium battery

Image memory

Vanadium-lithium

secondary battery

Image Processor PCB

CHAPTER 1 INTRODUCTION

1-11

■ Memory clear list

When the memory clear list is automatically printed upon powering up, this indicates that the image data on the list could not be backed up and have been deleted. Information on image data stored in the unit is automatically deleted when the list has been printed.

The backup battery contains lithium, organic solvents and other flammable substances. Batteries may explode or burn violently if thrown into a fire. If disassembled, skin injuries can result due to contact with the organic solvent. Depleted batteries must therefore be discarded separate from ordinary garbage and according to local regulations.

Caution on jumper plug position The battery backup function of the control memory is activated when the jumper pin (JP3) on the image processor PCB is short-circuited with the jumper plug. Control data are thus deleted when the power switch is turned off with the jumper plug removed. Be sure to print data stored in memory before removing the jumper plug. The battery backup function for the image memory is turned on when the jumper plug (JP1) on the image processor is set to the ON position. When the power switch is turned off with the jumper plug is removed or set to the OFF position, the image data are deleted. Be sure to output all image data before removing the jumper plug on the

Caution:

CHAPTER 1 INTRODUCTION

1-12

B. Backup data types

1. User mode settings

Data that the user can with the Data registration key on the Control panel.

Item Description

1. Data registration 1.User settings (date/time display setting, user telephone number registration, etc.

2.Report settings (transmission result reports, reception result reports, etc.)

3.Tx function settings (ECM transmission, automatic redialing, etc.)

4.Rx function settings (ECM reception, remote reception, etc.)

5.Printer settings (cassette selection, image reduction, etc.)

6. File settings (confidential mailbox, transfer, etc.)

7.System settings (user restriction, etc.)

8.Copy settings (standard magnification, automatic sorting, etc.)

2.Telephone number registration 1. 1-touch dialing registration

2. Coded dialing registration

3. Group dialing registration

2. Service mode settings

Data that a serviceman can set in the service mode.

Item Description #1 SSSW Error management, echo countermeasures, etc. #2 MENU NL equalizer, output level, etc. #3 NUMERIC Param. T1 timer setting, etc. #4A SPECIAL Not normally used #4B NCU Not normally used #4C ISDN Not normally used #5 TYPE Not normally used #6 SCANNER Not normally used #7 PRINTER Reduction/cassette selection, etc. #8 CLEAR All crear, etc. #9 ROM Image processor PCB ROM version number display #10 CS SET Miror mount initialization setting TEST MODE Test mode [1] to [7] and [9]

CHAPTER 1 INTRODUCTION

1-13

3. Management data

Data that automatically record unit status.

Item Description Communication result Records the 40 most recent transactions System dump recording Recent communication status, error communication

history, etc.

■ When data 1, 2 and 3 have been deleted or initialized

When the above backup data are deleted or initialized, the registered data are delet-

ed and all settings return to the factory default values.

4. Image data backed up by the backup battery

Item Description Tx image Transmission (memory transmission, batch transmis-

sion) Delayed transmission Delayed batch transmission Polling transmission Relay broadcast transmission

Rx image Confidential reception

Memory reception

CHAPTER 1 INTRODUCTION

1-14

C. Printing backup data information lists

The data that are battery backed up in the control memories shown below can be

printed in the form of lists.

D. Printing transmitted image data

The procedure used for printing image data battery backed up in the image memory

is shown below.

→→ →

E. Transfer print of received image data

When image data cannot be printed on the unit due to a breakdown, the received

image data can be transferred for printing on another fax machine.

→→

→→ →

Item

1. User mode Telephone number registration

Data registration

2. Service mode settings Service mode settings

3. Management data Activity management record

System dump record

1-touch dialing telephone number list 1-touch dialing telephone number list (Detail) Coded dialing telephone number list Coded dialing telephone number list (Detail) Group dialing telephone number list User data list

System data list

Activity report System dump list

List name

Memory reference Print document

Select document

to be printed

Memory reference Resend document

Select document to be transmitted

Specify transfer

destination

Select transmitter ID Tansfer

Print

CHAPTER 1 INTRODUCTION

1-15

F. Data that can be deleted/initialized in service mode

The #8 CLEAR service mode can be used to delete/initialize data in the control

memory.

■ All user data, sercive mode setting items, management data and image data except service mode setting #5 and the print counter from management data system dump.

Be sure to print the backup data list before performing this operation. Image data are deleted when the DRAM test in the test mode is performed.

Caution:

CHAPTER 2

OPERATION OVERVIEW

This chapter gives a overview description of basic unit operations and communica-

tions protocols.

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

A. Function construction .........................2-1

B. Fax function section I/O.....................2-3

II. SCANNING SYSTEM ..............................2-4

A. Document scanning...........................2-4

B. Scanning operation............................2-5

C. Memor y..............................................2-6

D. Processing when memor y is full........2-8

III. RECORDING SYSTEM ...........................2-9

A. Output sequence................................2-9

B. Recording system..............................2-9

C. Image rotation function ....................2-19

IV. COMMUNICATIONS SYSTEM ..............2-20

A. Image transmission rate...................2-20

B. V.8/V.34 protocols ............................2-22

C. Direct transmission ..........................2-39

D. Delayed memory transmission.........2-40

E. Broadast transmission .....................2-40

F. Delayed transmission/

delayed broadcast transmission.......2-41

G. Polling reception/

multipolling reception.......................2-41

H. Fixed time polling reception/

fixed time multipolling reception.......2-42

I. Remote reception .............................2-42

J. Paper size declaration during

reception ..........................................2-43

V. LAYOUT AND ROLE OF ELECTRIC

COMPONENTS .....................................2-44

A. Fax PCB types.................................2-44

B. List of variable resistors (VR), check

pins by printed circuit board.............2-45

Canon GP160, Gp-160F, Gp-160DF Service Manual faxboardG1

INTRODUCTION

CONTENTS

CHAPTER 1

I. PRODUCT OVERVIEW

II. SPECIFICATIONS

III.NAMES OF PARTS

IV. CONTROL SECTION

V. PRECAUTIONS TO BE TAKEN IN SERVICING

CHAPTER 2