Canon Super G3 Fax Board-J1 Service Manual

SUPER G3 FAX BOARD-J1

REVISION 0

JUNE 2001

FY8-13HD-000

Application

This manual has been issued by Canon Inc. for qualified persons to learn technical theory, installation, maintenance, and repair of products. This manual covers all localities where the products are sold. For this reason, there may be information in this manual that does not apply to your locality.

Corrections

This manual may contain technical inaccuracies or typographical errors due to improvements or changes in products. When changes occur in applicable products or in the contents of this manual, Canon will release technical information as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition of this manual.

The following paragraph does not apply to any countries where such provisions are inconsistent with local law.

Trademarks

The product names and company names used in this manual are the registered trademarks of the individual companies.

This manual is copyrighted with all rights reserved. Under the copyright laws, this manual may not be copied, reproduced or translated into another language, in whole or in part, without the written consent of Canon Inc.

Printed in U.S.A.

Imprimé au U.S.A.

Caution

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

INTRODUCTION

1 Symbols Used

This documentation uses the following symbols to indicate special information:

Symbol Description

Indicates an item of a non-specific nature, possibly classified as Note, Caution, or W arning.

Indicates an item requiring care to avoid electric shocks.

Indicates an item requiring care to avoid combustion (fire).

Indicates an item prohibiting disassembly to avoid electric shocks or problems.

Indicates an item requiring disconnection of the power plug from the electric outlet.

Indicates an item intended to provide notes assisting the understanding of the

Memo

topic in question.

REF.

Indicates an item of reference assisting the understanding of the topic in question.

Provides a description of a service mode.

Provides a description of the nature of an error indication.

Refers to the Copier Basics Series for a better understanding of the contents.

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

INTRODUCTION

2 Outline of the Manual

This Service Manual contains basic information needed to service the G3 FAX Board designed for installation to the iR2200/iR2800/iR3300 in the field, conducted for the purpose of maintaining its product quality and a specific level of performance. For descriptions on how to use the iR2200/iR2800/iR3300, see the separately prepared Service Manual.

This Service Manual consists of the following chapters:

Chapter 1 Outline: features, specifications, system configura-

tion, list of user modes

Chapter 2 Basic Operation: functional construction, outline of electrical

circuitry, power supply

Chapter 3 Troubleshooting: points to Note for Troubleshooting, upgrad-

ing

Chapter 4 Installation: installation

Chapter 5 Service Mode: using service mode, list of service modes

Chapter 6 Error Code: list of error codes, main causes, list of mea-

sures

Appendix: curcuit diagram

The descriptions are updated from time to time to reflect product improvements, and major changes are communicated in the form of Service Information bulletins.

All service persons are expected to familiarize themselves with the contents of this Service Manual and Service Information bulletins and acquire a level of knowledge and skill required to promptly respond to the needs of the field.

This Service Manual does not provide detailed descriptions on how to use

REF.

the Board or detailed information on user reports. See the separately prepared booklet. The detailed explanations on SSSW/parameters are limited to those used in association with the Board; for others, see the separately prepared "G3 Facsimile Service Data Handbook" (Rev.0; HY8-23A1-000). As for error codes, full explanations are on those newly added to the Board or those for which measures specific to the Board are offered; for others, see the separately prepared "G3 Facsimile Error Code List" (Rev.1; HY823A0-010).

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

INTRODUCTION

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 addition, the asterisk (*) as in “DRMD*” indicates that the DRMD signal goes on when ‘0’. 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 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.

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

iii

CONTENTS

Contents

CHAPTER 1 OUTLINE

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

2 Specifications ................................... 1-2

3 List of USER Modes ........................ 1-4

3.1 User Mode>Custom Fax Settings

................................................... 1-4

CHAPTER 2 BASIC OPERATION

1 G3 Fax Control PCB ........................ 2-1

1.1 G3 Fax Control PCB Block

Diagram ..................................... 2-1

1.2 Components of the G3 Fax

Control PCB............................... 2- 1

2 NCU PCB ......................................... 2-3

2.1 Block Diagram of the NCU

PCB ............................................ 2-3

CHAPTER 3 TROUBLESHOOTING

1 Points to Note for Troubleshooting.. 3-1

1.1 When Turning Off the Main Power

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

1.2 Points to Note When Changing

Service Mode Settings ............... 3-1

1.3 Points to Note When Accessing the

DC Controller PCB .................... 3-1

3.2 User Mode>Report Settings ...... 1-5

3.3 User Mode>System Settings>

Communication Settings............1-6

2.2 Functions of the NCU PCB ....... 2- 3

3 Off-hook detection PCB................... 2-4

3.1 Block Diagram of the Off-hook

detection PCB ............................ 2-4

3.2 Functions of the Off-hook detection

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

4 Wiring Diagram................................ 2 - 5

5 Signals .............................................. 2-6

1.4 Backing Up the Address Book... 3-2

2 Problems at Time of Installation ...... 3-3

3 Common Problems ........................... 3 -4

4 Upgrading......................................... 3-5

CHAPTER 4 INSTALLATION

1 Installation ........................................ 4-1

1.1 Checking the Contents ............... 4- 1

1.2 Before Starting the Work ........... 4-2

1.3 Installation to the Host Machine 4- 2

1.4 Connecting to the Telephone Line

................................................... 4-7

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1.5 Selecting the Type ...................... 4-8

1.6 Setting Telephone Number and the

Type of Line ............................... 4-8

1.7 Checking the Operation of FAX

Functions.................................... 4-9

CHAPTER 5 SERVICE MODE

1 Service Mode ................................... 5-1

1.1 Outline ....................................... 5-1

1.2 Using Service Mode .................. 5-2

1.3 Guide to the Keys....................... 5-3

2 List of Service Mode Items .............. 5-4

3 Using the Bit Switches(#1SSSW) .... 5-7

4 Menu Switch Setting (#2 MENU) . 5-20 5 Setting V arious Parameters

(#3 NUMERIC Param.) ................. 5-22

6 Selecting the Country (#5 TYPE) .. 5-26 7 Setting Printer Functions

(#7 PRINTER) .............................. 5-26

7.1 Service Software Switches....... 5-26

7.2 NUMERIC Param.

(numeric parameter setting) .... 5-28

8 Initializing the Settings

(#8 CLEAR) ................................... 5-29

9 Test Mode (#9 TEST) ..................... 5-30

10 Service Report ................................ 5-37

CHAPTER 6 ERROR CODES

1 Generating Service Error Codes ......6-1

2 Outline of Error Codes ..................... 6-2

3 List of Error Codes........................... 6-3

4 Causes of and Remedies for Newly

CONTENTS

9.1 MODEM T est........................... 5-31

9.1.1 Relay Test .......................... 5-31

9.1.2 Frequency Test (FREQ) ..... 5-32

9.1.3 G3 Signal Transmission Test

(G3 Tx) .............................. 5-33

9.1.4 DTMF Transmission Test .. 5-34

9.1.5 V.34 G3 signal Transmission

Test (V34G3Tx)................. 5-35

9.2 Function Test............................ 5-36

9.2.1 4800bps Signal Transmission

Test..................................... 5-36

10.1 System Data List ...................... 5-37

10.2 System Dump List ................... 5-38

10.3 Error Transmission Report.......5-41

Added Error Codes........................... 6-8

APPENDIX

1.1 G3 FAX CONTROL PCB

(100V/120V)(1/8) ..................... A-1

1.2 OFF-HOOK DETECTION PCB

.................................................. A-9

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

1.3 NCU PCB (120V) (1/2) .......... A-10

1.4 G3 MODULAR PCB (120V) . A-13

CHAPTER 1

OUTLINE

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

CHAPTER 1 OUTLINE

1 Outline

The Board combines image processing functions and telephone-based communication

functions to enable a digital copier to operate as a highly functional fax-in-one machine.

It transmits images at a speed of 33.6 kbps max., taking advantage of a V.34-standard mo-

dem recommended under ITU-T.

[1]

[2]

[1] Super G3 FAX Board-J1 [2] Off-hook detection Unit [3] Speaker Unit

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3FAX BOARD-J1 REV.0 JUNE 2001

[3]

F01-101-01

1-1

CHAPTER 1 OUTLINE

2 Specifications

Lines Used

• subscriber line (PSTN)

Method of Modulation

G3 image signal ITU-T V.27ter (2.4Kbps, 4.8Kbps)

ITU-T V.29 (7.2Kbps, 9.6Kbps) ITU-T V.17 (TC 7.2Kbps, TC9.6Kbps, 12Kbps, 14.4Kbps) ITU-T V.34 (2.4Kbps, 4.8Kbps, 7.2Kbps, 9.6Kbps, 12Kbps, 14.4Kbps, 16.8Kbps, 19.2Kbps,

21.6Kbps, 24Kbps, 26.4Kbps, 28.8Kbps,

31.2Kbps, 33.6Kbps)

G3 procedure signal

Speed of Transmission

33.6Kbps, 31.2Kbps, 28.8Kbps, 26.4Kbps, 24Kbps, 21.6Kbps, 19.2Kbps

16.8Kbps, 14.4Kbps, 12Kbps, TC9.6Kbps, TC7.2Kbps, 9.6Kbps,

7.2Kbps, 4.8Kbps, 2.4Kbps equipped with auto fall-back function

Method of Coding

JBIG, MMR, MR, MH

ITU-T V.21 No.2 (300bps) ITU-T V.8, V34 (300bps, 600bps, 1200bps)

G3-Unique Abbreviation

None

Modem IC

Conexant FM336

Error Correction

ITU-T ECM method

Specifications for the Reader Unit Size of Originals for Transmission

A3, A4, A4R, A5R, B4, B5, B5R LTR, LTRR, LGL, 11×17, STMT, STMTR DADF-H1 in use: transmission of double-sided originals possible

1-2

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CHAPTER 1 OUTLINE

Density of Scanning Lines

Standard 8dot/mm×3.85 lines/mm Fine 8dot/mm×7.7 lines/mm Super Fine 8dot/mm×15.4 lines/mm Ultra Fine 16dot/mm×15.4 lines/mm

Reproduction of Halftone

PD method (same as when making copier; 256 gradations)

DONE Stamp

if DADF-H1 is in use ink color: Pink may be at end of transmission or of reading (by selection)

Specifications for the Recording Unit

Maximum reception size A3(297×420mm) Density of scanning lines 600×600dpi Trial shot yes

Memory Specifications

Image memory 3,700 pages (approx; using Canon FAX standard Char t No. 1) memory type hard disk (about 4 GB of image area) Method of Storage JBIG

Other Specifications ECM Function

yes

Polling Function

yes

Memory Box Function

yes

Password Reception

yes

Transfer Function

yes

Telephone Number Notice Function (as source)

yes

User Abbreviation Notice Function

yes

Display Language Switch Function

yes (among installed language modules)

Remote UI (RUI) function

yes

check on communications history, check on received fails, registration of various user mode settings import/export of electrical telephone directory

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3FAX BOARD-J1 REV.0 JUNE 2001

1-3

CHAPTER 1 OUTLINE

3 List of USER Modes

3.1 User Mode>Custom Fax Settings

level 1 level 2

1. User Settings Standard key settings: no setting*, Delayed TX, memory box, sender’s name, RX mode, Document size, Test Print, Zoom TX.

Unit Telephone # Unit Name : input mode (Alphabet, other) Sender’s Names(TTI): input mode (Alphabet, other);

99 items max.

TX Terminal ID: on*, off

on>option setting image (inside, outside*) telephone # mark (FAX*, TEL)

Density Control: lighter < > darker; 9 settings Tel Line Type: Pulse, tone* Volume Control: alarm Volume: (0 to 8, 4*)

monitor volume: 0 to 8, 4*

standard settings: Store and Initialize possible

2. Store Destinations A many as 200 items 15 addresses each are indicated

(from *001 to *200) per screen, and indexes may be stored may be stored; for each.

3. TX Settings ECM TX: on*, off

pause time: 1 to 15 sec, 2 sec* auto redial: on*, off

on>option setting Redial Times: 1 to 15 times, 2 times* Redial Interval: 2 to 99 min, 2 min* TX Error Resend: Error and 1st page*,All pages, Off

Stamp Document (if DADF-H1 in use)

4. RX Settings ECM RX: on*, off

Received Page Footer: on, off*

*Factory Setting

1-4

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

CHAPTER 1 OUTLINE

5. Printer Settings Select Cassette switch A: on*, off switch B: on*, off switch C: on*, off switch D: on*, off

Receive reduction: on*, off

on>option setting RX Reduction: auto*, Fix, Red. reduce %: 75, 90*, 95, 97% reduce direction: ve rti cal/horizontal,

vertical only* Two-sided Print: on, off* 2-on-1 Log: on, off*

3.2 User Mode>Report Settings

level 1 level 2

1. Custom settings>Fax TX report: on, for error only*, off yes>Report with TX Image on*, off

Activity report auto Print every 40 communications:

on*, off Send/Receive separate: on, off* Daily Activity Report Time: on, off* on>time input

RX report: on, for error only, off* memory box RX report: on*, off

2. Print List>Fax address book list 1, address book list 2, group Destination list, user’s data

list

*Factory Setting

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1-5

CHAPTER 1 OUTLINE

3.3 User Mode>System Settings>Communication Settings

level 1 level 2

1. Send start speed: 33600*/14400/9600/7200/4800/2400bps

2. Receive start speed: 33600*/14400/9600/7200/4800/2400bps

3. Transfer setting: on, off* on>option setting Password (optional) transfer destination

Select Original Unit: on*, off

on>Select address Print RX Document: on*, off Transfer Start Time: everyday (5 times), Select Days

(5 times by day of week), off* Transfer Ending Time: everyday (5 times), Select Days

(5 times by day of week), off*

4. memory Lock setting: on, off* on>option setting Password (optional) report print: on*, off memory Lock start time:

every day (5 time), select Days (5 times by day of week), off*

memory Lock End Time:

every day (5 time), select Days (5 times by day of week), off*

5. PIN Code Access: on, off* on>PIN Code Position Option*, Prefix, Suffix

6. Receive password: 20 characters

*Factory setting.

1-6

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

CHAPTER 2

BASIC OPERATION

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

1 G3 Fax Control PCB

1.1 G3 Fax Control PCB Block Diagram

CHAPTER 2 BASIC OPERATION

G3 Fax control PCB

ASIC PORT IC (IC16)

MODEM IC FM336 (IC11)

ASIC Chip-C (IC46)

OGMIC (IC44)

32bit

Analog level adjustment circuit

SDRAM 64Mbit (IC6)

NCU (CONTROL)

Speaker

Main Controller PCB

IEEE 1284

ASIC Chip-D (IC43)

FLASH ROM-DIMM

Reset IC (IC3)

MPU CHIP-C CHIP-D PORT IC

MPU (IC34)

b i t

F02-101-01

1.2 Components of the G3 Fax Control PCB

MPU (IC34)

µPD703107GJ-025-UEN (V850E-MA1) from NEC is an MPU used to control the com-

munications exchanged on the line.

It is equipped with a 256K-byte internal ROM and a 10K-byte internal RAM, and is

driven by 3.3 V.

ASIC (IC46)

MB87J1762PFVS from Fujitsu is an ASIC (chip-D) used for JBIG coding/decoding and

SDRAM control. A 64M-bit SDRAM is connected to it.

NCU (LINE)

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2-1

CHAPTER 2 BASIC OPERATION

ASIC (IC43)

µPD82870GD-001-LML from NEC used for ASIC (chip D) serves to control the bi-directional, parallel communications of the IEEE1284 cable (interface with the main controller PCB), to control the chips around the MPU, to process detection of off-hook state, and to process CI counter operations.

G3 FAX Control DIMM Slot (J11)

The 16M-bit flash ROM DIMM installed to this slot contains a program used to control communications on an analog telephone line. The DIMM may be upgraded by downloading using a Service Support Tool or by replacement.

ASIC (IC16)

µPD65882GC-015-8EU from NEC is an ASIC (port IC), and is used to control the NCU and various ports such as for speakers.

SDRAM (IC6)

The 64M-bit SDRAM serves as memory for coding/decoding of image data for transmission/reception or as a work area for the MPU.

RESET IC (IC3)

The reset IC is used when resetting the MPU of the Board, as when the power is tuned on or when the voltage of the power drops.

MODEM IC (IC11)

FM336 from CONEXANT is a modem used for G3 modulation as prescribed by ITU-T V.17, V.21, V.27ter, V.29, and V.34. At time of reception, the received data from the line is subjected to G3 demodulation as prescribed by ITU-T V.17, V.21, V.27ter, V.29, and V.34.

OGMIC (IC44)

OGMIC is used to reproduce voice messages.

2-2

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CHAPTER 2 BASIC OPERATION

2 NCU PCB

2.1 Block Diagram of the NCU PCB

NCU PCB

2-line to 4-line conversion circuit

Line voltage conversion circuit

Dial pulse generation circuit

Off-hook detection circuit

F02 -201-01

2.2 Functions of the NCU PCB

2-Line to 4-Line Conversion Circuit

It converts signals from a 2-line telephone line into transmission signals and reception signals for a 4-line signal line. In addition, it prevents transmission signals from the modem from invading the reception circuit.

Dial Pulse Generation Circuit

The dial pulse generation circuit generates dial pulses by turning on and off the relay in the circuit using control signals from the G3 fax control PCB, thereby enabling the fax board to transmit dial signals using the dial line.

Off-Hook Detection Circuit

It identifies the condition of the telephone or the handset (option) connected to the telephone terminal as being off- or on-hook in relation to the DC current flowing into it.

Circuit Voltage Conversion Circuit

The primary side of the NC board circuit is controlled by means of a line voltage of +48 VDC; the DC component is cut out using a capacitor, thereby converting only the audio signals in voltages of a model level.

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3FAX BOARD-J1 REV.0 JUNE 2001

2-3

CHAPTER 2 BASIC OPERATION

3 Off-hook detection PCB

3.1 Block Diagram of the Off-hook detection PCB

From composite power supply PCB

+24V

From main controller PCB

5V all-day voltage

J713

J712

3.2 Functions of the Off-hook detection PCB

Power Supply Circuit Used to Detect an Extension

To detect the connection of an extension, the Off-hook detection PCB generates a DC

voltage of +48 V to supply to the extension terminal. A transformer is used to separate the

primary side and the secondary side by an electrical means.

All-Day Power Supply Circuit

The main controller circuit generates all-day 5 VB from all-night +3.3 VB. To operate the

FC detection circuit of the G3 fax control PCB at all times, the +5 VB voltage is sent to

the G3 fax control PCB by way of the Off-hook detection PCB.

Off-hook detection PCB

Power supply circuit for detection of extension telephone

All-day power supply relay circuit

F02-301-01

J714

J715

supplies voltage for detection of off-hook state

5V all-day power supply

2-4

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3 FAX BOARD-J1 REV.0 JUNE 2001

4 Wiring Diagram

Main Controller PCB

J31

1--40

DIMMROM

1--72

J11

G3 fax control PCB

J106

Modular PCB

1--50

J912

CHAPTER 2 BASIC OPERATION

J911 1--7

J10

1--5

1--2

J1005

1--40

J714

Off-hook detection.

1--2

1--14 1--2

J104

J105

1--14

J103

J718 J713

1--3

J715

J712

1--2

J102

1--2

1--4

Main

Controller

PCB

J1059

1--6

J101

1--23

Supply PCB

Main

power

J204

1--6

NCU PCB

1--23

1--10 1--2 1--2

J900 J9020

Composite

Supply PCB

Power

J124

Speaker Arrester

F02-401-01

2001 CANON INC. 2000 2000 2000 2000 CANON SUPER G3FAX BOARD-J1 REV.0 JUNE 2001

J2002

GND

2-5

CHAPTER 2 BASIC OPERATION

5 Signals

G3 fax control PCB (J31)¬ ®Main controller PCB (J1005)

J31 J105 signal Description A1 A20 FSTROBE host clock A2 A19 FD0 data signal 0 A3 A18 FD1 data signal 1 A4 A17 FD2 data signal 2 A5 A16 FD3 data signal 3 A6 A15 FD4 data signal 4 A7 A14 FD5 data sing 5 A8 A13 FD6 data signal 6 A9 A12 FD7 data signal 7 A10 A11 FNACK peripheral clock A11 A10 FBUSY forward ACK signal A12 A9 FPERROR rev erse ACK signal A13 A8 FSELECT transfer mode switch signal (H=ECP mode) A14 A7 FRESET forced reset signal A15 A6 FOPTIONO board detection signal (H=present) A16 A5 NC not used A17 A4 NC not used A18 A3 GND 3.3V ground A19 A2 FSPKON speaker ON (L=being generated) A20 A1 HPDIR not used B1 B2 0 PWCTL ESS release command signal to fax board (L=ESS release) B2 B1 9 CICNT pseudo CI control signal B3 B1 8 NC not used B4 B1 7 ESSACT ESS release request signal (L=ESS release) for G4 B5 B1 6 FSPOUT line monitor analog output B6 B1 5 GND 3.3V ground B7 B1 4 FCID CI/FC/CNG detection signal B8 B1 3 FOFFHK OFFHOOK signal A9 B12 BUSDIR bus direction control signal to HOST B10 B11 NC not used B11 B10 NC not used B12 B9 NC not used B13 B8 GND 3.3V ground B14 B7 GND 3.3V ground B15 B6 GND 3.3V ground B16 B5 GND 3.3V ground B17 B4 FNSELECT IN 1284 active (H=ECP mode) B18 B3 FNINT nReverse request B19 B2 FNFAULT nPeripheral request (L= data from peripheral present) B20 B1 FNAUTOFD reverse mode control signal

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CHAPTER 2 BASIC OPERATION

G3 fax control PCB (J101) ¬ ®NCU PCB (J2)

J101 J2 signal Description 1 6 AGND analog ground 2 5 NC not used 3 4 +12V relay power supply 4 3 ANLGIN line monitor signal 5 2 TX 4-line transmission signal 6 1 RX 4-line reception signal

G3 fax control PCB (J102)¬ ®NCU PCB (J1)

J102 J1 Signal Description 1 1 DGND digital ground 2 2 BIT2 for future use 3 3 BIT1 for future use 4 4 BIT0 for future use 5 5 LPL2 line polarity signal 2 (H=L2 positive) 6 6 LPL1 line polarity signal 1 (H=L1 positive) 7 7 HOOK2 external telephone off-hook detection signal (H=off-hook) 8 8 HOOK1 extension telephone off-hook detection signal (H=off-hook) 9 9 CI0R CI1 and CI2 OR signal (H=C1 present) 10 10 CI2 CI detection signal 1 (H=CI present) 11 11 CI1 CI detection signal 2 H=C1 present) 12 12 LPRD polarity reversal detection relay drive signal (H=ON) 13 13 DCD DC relay drive signal (H=ON) 14 14 CMLD CML relay drive signal (H=ON) 15 15 HRD H relay drive signal (H=ON) 16 16 PRD P relay drive signal (H=ON) 17 17 SRD S relay drive signal (H=ON) 18 18 VHGND VH ground 19 19 VHGND VH ground 20 20 VH off-hook detection power supply 21 21 VCC ESS 3.3 V all-time drive power supply 22 22 +3.3V logic drive voltage 23 23 DGND digital ground

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CHAPTER 2 BASIC OPERATION

G3 fax control PCB (J104) ¬ ®Composite power supply PCB (J124), Off-hook de-

tection PCB (J715)

J104

J124/J715

signal Description 1 - GND4 not used 2 - +12V not used 3 1(J124) GND0 3.3V digital ground 4 2(J124) GND0 3.3V digital ground 5 3(J124) +3.3V 3.3V power supply (at time of ESS, OFF) 6 4(J124) +3.3V 3.3V power supply (at time of ESS, OFF) 7 5(J124) GND3 3.3VS digital ground 8 6(J124) +3.3VS ESS 3.3V all-time drive pow er supply 9 7(J124) GND2 5V digital ground 10 8(J124) GND2 5V digital ground 11 9(J124) +5V 5V power supply (at time of ESS, OFF) 12 10(J124) +5 V 5V p ow e r supply (at time of ESS, OFF) 13 1(J715) +5VS ESS 5V all-time drive power supply 14 1(J715) GND1 5VS analog ground

G3 fax control PCB (J105)¬ ®Relay connector to speaker

J105 SPK signal Description 1 1 SPKR1 Speaker output 2 2 SPKR2 Speaker output

NCU PCB (J3)¬ ®Modular PCB (J911)

J3 J911 signal Description 7 1 T1 not used 6 2 T2 not used 5 3 NC not used 4 4 L1 telephone line connection 3 5 L2 telephone line connection 2 - - not used 1 - - not used

NCU PCB (J4)¬ ®Off-hook detection PCB (J714)

J4 J714 signal Description 1 1 VH off-hook detection power supply 2 2 OVH ground

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CHAPTER 2 BASIC OPERATION

Off-hook detection PCB (J712)¬ ®Main controller PCB (J1059)

J712 J1059 signal Description 1 1 OVA +5V all-day power ground 2 2 5VB +5V all-day power supply 3 3 OVD not used 4 4 CICNT not used

Off-hook detection PCB (J713)¬ ®Main power supply PCB (J204)

J713 J204 signal Description 1 9 24VU3 +24V power supply 2 10 OVU3 +24V ground

Off-hook detection PCB (J715)¬ ®G3 fax control PCB (J104)

J715 J104 signal Description 1 13 5VB +5V all-day power supply 2 14 OVA +5V all-day ground

Off-hook detection PCB (J718)

not used

Modular PCB (J912)¬ ®Modular Cable

J912 Cable signal Description 1 - L22 not used 2 - L21 not used 3 - L12 telephone line 1 connection 4 - L11 telephone line 1 connection 5 - T2 not used 6 - T1 not used

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TROUBLESHOOTING

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CHAPTER 3 TROUBLESHOOTING

If an error code is indicated in the presence of an error, see the descriptions on error code in Chapter 6; to find out how to generate a service error code,

REF.

see 1.1.1 “Generating Service Error Code” in Chapter 6.

1 Points to Note for Troubleshooting

Take note of the following when troubleshooting the Board:

1.1 When Turning Off the Main Power

The Board stores image control data and image data on the hard disk. If reception is complete, the received images will be retained after the main power is turned off. On the other hand, transmission images will be lost when the main power is tuned off. (In response, a memory clear list will be generated.)

1.2 Points to Note When Changing Service Mode Settings

If you ever change service mode settings, be sure to turn off and then on the main power. The settings made in service mode are stored on the host’s hard disk. The settings related to the Board are loaded from the hard disk to the G3 fax control PCB, requiring that that main power be turned off and then on again whenever a change has been made.

1.3 Points to Note When Accessing the DC Controller PCB

If you have to access the DC controller PCB, as for replacing the DIMM, you will have to remove the G3 FAX Board [1]. To facilitate the wor k, detach the connector cover [2] shown in the figure, and disconnect the connector found on the G3 fax control PCB before detaching the G3 FAX Boar d. (This way, you will have to remove fewer screws as compared with disconnecting the connector on the controller side.)

[2]

F03-103-01

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[1]

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CHAPTER 3 TROUBLESHOOTING

1.4 Backing Up the Address Book

The data for an address book is stored on the host’s hard disk, and may be backed up using the remote user interface. If the user’s environment allows the use of a remote user interface, advise the user to back up the data as often as possible. The presence of a backup will make restoration as in response to a fault on the hard disk easy.

Remote UI Additional Functions>Custom Settings>Fax Settings>Import/Export

3-2

F03-104-01

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CHAPTER 3 TROUBLESHOOTING

2 Problems at Time of Installation

The G3 FAX board is not recognized.

Cause: The main controller will automatically identify the presence of a G3 fax

control PCB by communication with it at time of power-on. The cable used for the communication may not be connected.

Remedy: Check to see if the cable between the main controller PCB and the G3

fax control PCB is correctly connected. (J1005 on the main controller PCB, J31 on the G3 fax control PCB)

E674-0001 Error

Cause: E674-0001 is indicated when the MPU of the G3 FAX control PCB

does not respond although the main controller PCB and the G3 fax con troller PCB are electrically connected. It also occurs when the G3 FAX control PCB is not supplied with power and, as a result, the MPU of the G3 fax board is not operating.

Remedy: Check to see if the cable between the main controller PCB and the G3

fax control PCB is correctly connected. (J1005 on the main controller PCB, J31 on the G3 fax control PCB)

Remedy: Check to see if the G3 FAX Board DIMM is correctly installed. Or, the

program in the DIMM may be out of order. Replace the DIMM with a normal one.

Remedy: Check to find out if the power line to the G3 FAX Board is correctly

connected. (J104 on the G3 fax control PCB and J124 on the low-voltage power supply PCB)

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3 Common Problems

Communications fail.

Cause: The telephone line is not connected to the line modular jack.

Remedy: Connect the telephone line to the line modular jack (middle terminal).

Calling fails.

Cause: The wrong type of line (tone dial) is selected.

Remedy: Select the correct line type.

No sound is generated by the speaker.

Cause: The speaker is not correctly connected.

Remedy: Check the wiring from the G3 fax control PCB to the speaker. (J105 of

the G3 fax control PCB to the host relay cable; relay cable between speaker behind the support cover and the copier)

The DONE stamp fails to operate.

Cause: the stamp has run out of ink.

Remedy: Replace the stamp cartridge.

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4 Upgrading

The firmware of the Board may be upgraded by either of the following two ways:

1. By replacing the DIMM ROM.

2. By upgrading the firmware contained by the DIMM ROM using a Service Support Tool.

For method 1 above, upgrading is done by mere replacement of the DIMM ROM shown

in the following diagram:

[1]

[2]

[1] DIMM ROM [2] G3 fax control PCB

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F03-400-01

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+ 79 hidden pages

Canon Super G3 Fax Board-J1 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

INTRODUCTION

G3 Fax control PCB

NCU PCB

Off-hook detection PCB