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XEROX
Document FaxCentre 165 and Document WorkCentre 165c

SERVICE MANUAL

Part Number : 602E48370

PREFACE
This manual is intended for service engineers responsible for installing, servicing and repairing the facsimile machines described herein. The manual consists of thirteen chapters which describe: · Chapter 1: the General Features and Technical Specifications · Chapter 2: the facsimile machine's Internal and external structure · Chapter 3: the Installation and setup procedures · Chapter 4: how to set the Software Parameters · Chapter 5: the Diagnostic and testing procedures · Chapter 6: the Settings and adjustments · Chapter 7: the Maintenance and replacement procedures · Chapter 8: the Optional devices · Chapter 9: the Installation of the LinkFax 8 module in Windows 95 environment · Chapter 10: the User Guide of the LinkFax 8 module in Windows 95 environment · Chapter 11: the Installation of the LinkFax 8 module in Windows 3.1x environment · Chapter 12: the User Guide of the LinkFax 8 module in Windows 3.1x environment · Chapter 13: the Spares List

FIRSTEDITION: REFERENCES:

April 1998 User Manual

CONTENTS
1.
1.1 1.2 1.3

INTRODUCTION .................................................1-1
MAIN FEATURES ..................................................................... -1 1 TECHNICAL SPECIFICATIONS ...................................................1-2 QUICK REFERENCE GUIDE.........................................................1-5

1.3.1 Sending a Fax ......................................................................................1-5 1.3.2 Receiving a Fax ....................................................................................1-5 1.3.3 Using the Facsimile Machine as a Photocopier ........................................1-5

2.
2.1

GENERAL DESCRIPTION ....................................2-1
EXTERNAL PARTS................................................................... 2-1

2.1.1 Console ...............................................................................................2-2 2.1.2 Functions of the console keys ...............................................................2-3

2.2

ELECTROMECHANICAL PARTS.................................................2-6

2.2.1 Motors ................................................................................................2-6 2.2.2 Sensors ...............................................................................................2-7 2.2.3 Speaker ...............................................................................................2-8

2.3

2.3.1 2.3.2 2.3.3 2.3.4 2.3.6

ELECTRONIC PARTS ................................................................2-9
General Block Diagram .......................................................................2-10 Block Diagram of the Motherboard ......................................................2-11 Block Diagram of the Network Control Unit Board ................................ 2-14 Block Diagram of the Power Supply Board ........................................... 2-15 Printer Unit .......................................................................................2-17

3.
3.1
3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7

INSTALLATION AND INITIALIZATION PROCEDURES .....................................................3-1
PRELIMINARY OPERATIONS....................................................3-1
Unpacking the Facsimile Machine ..........................................................3-1 Connecting to the Telephone Line .........................................................3-2 Connecting the Power Cord ..................................................................3-4 Installing the Print Head .......................................................................3-4 Inserting the Output Trays ....................................................................3-9 Loading Paper ...................................................................................3-10 Feeding special papers manually on the LinkFax model ......................... 3-10
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XEROX DFC165 & DWC165c Service Manual

3.2.1 3.2.2 3.2.3 3.2.4 3.2.5 3.2.6

3.2

Organization of the Installation and Setup Parameters .......................... 3-12 Setting the Country Parameters ...........................................................3-15 Storing the User's Number and Name ..................................................3-16 Setting Up the Telephone Line ............................................................3-17 Completing Installation ......................................................................3-19 Resetting the Fax Machine ..................................................................3-19

INSTALLING AND SETTING UP THE MACHINE...........................3-12

4.
4.1

SERVICE SWITCHES...........................................4-1
SERVICE SWITCH TABLES .......................................................4-3

5.
5.1 5.2

DIAGNOSTICS ....................................................5-1
SELF-DIAGNOSTICS ................................................................5-1 ERROR CODES ........................................................................ -3 5
Meaning of Protocol Signal Codes .........................................................5-4 Meaning of Error Codes ........................................................................5-6 Printing the Communication Protocol ....................................................5-9 Printing the Counters .........................................................................5-11

5.1.1 Description of the Self-Diagnostic Program ............................................5-2

5.2.1 5.2.2 5.2.3 5.2.4

5.3

5.3.1 5.3.2 5.3.3 5.3.4

REPORTS ............................................................................. -12 5
Transmission Report (LAST TX REPORT) ..............................................5-12 Broadcast Transmission Report (LAST BROAD. REP.) ............................. 5-14 Activity Report (ACTIVITY REPORT) ....................................................5-14 Power Failure Report ..........................................................................5-15

5.4

5.4.1 Enabling the Facsimile Machine as a "Slave Station" ............................. 5-16

REMOTE DIAGNOSTICS..........................................................5-16

6.
6.1
6.1.1 6.1.2 6.1.3 6.1.4 6.1.5 6.1.6 6.1.7
vi

SYSTEM TEST AND ADJUSTMENTS..................... 6-1
SYSTEM TEST ......................................................................... -1 6
ALIGNMENT TEST ................................................................................6-2 NOZZLES TEST ...................................................................................6-4 CLEANING ...........................................................................................6-6 PRINT CHART ......................................................................................6-7 ASF TEST ............................................................................................6-9 ADF TEST ...........................................................................................6-9 LOAD DEFAULT .................................................................................6-10
XEROX DFC165 & DWC165c Service Manual

6.1.8 SCANNER SHADING ...........................................................................6-10 6.1.9 CARRIAGE TEST ................................................................................6-11

6.2 6.3

CHECKS AND ADJUSTMENTS..................................................6-12 ADJUSTING THE CCD .............................................................6-13
Preparing for the CCD Adjustment .......................................................6-13 Checking the Alignment of the CCD Board ........................................... 6-14 Checking the Lens Focus ....................................................................6-16 Checking that the Document and the CCD are centred .......................... 6-17

6.2.1 Checking the Direct Voltages ..............................................................6-12

6.3.1 6.3.2 6.3.3 6.3.4

7.
7.1

MAINTENANCE AND REPLACEMENT PROCEDURES .....................................................7-1
OUT OF INK Message ...........................................................................7-1 Replacing the rechargeable Ink Cartridge ...............................................7-2 Replacing the Print Head ......................................................................7-3 Cleaning the Print Head ........................................................................7-3 Cleaning the Electrical Contacts ............................................................7-4 Cleaning the Print Head Cleaning Pad ....................................................7-5 Cleaning the Optical Unit .....................................................................7-6

7.1.1 7.1.2 7.1.3 7.1.4 7.1.5 7.1.6 7.1.7

MAINTENANCE........................................................................ -1 7

7.2

7.2.1 Wirings .............................................................................................7-10 7.2.2 Removing the Casing .........................................................................7-12 7.2.3 Removing the Power Supply/NCU Assembly ........................................ 7-13 7.2.4 Removing the Power Supply and NCU Boards ...................................... 7-15 7.2.5 Removing the Motherboard ................................................................7-16 7.2.6 Removing the Console .......................................................................7-18 7.2.7 Removing the Console Board ..............................................................7-19 7.2.8 Removing the Display .........................................................................7-19 7.2.9 Removing the Scanner Unit ................................................................7-20 7.2.10 Removing the CCD Board ...................................................................7-21 7.2.11 Removing the LED Array ....................................................................7-21 7.2.12 Removing the Printer Unit ..................................................................7-22 7.2.13 Removing the Carriage, Paper and Ink Drain Motors ............................. 7-23 7.2.14 Removing the Scanner Motor ..............................................................7-24 7.2.15 Removing the Print Carriage ...............................................................7-24

DISASSEMBLY AND REPLACEMENT PROCEDURES................... 7-10

8.
8.1

OPTIONAL DEVICES ...........................................8-1
SETTING UP A BACK TO BACK CONNECTION ..............................8-2
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XEROX DFC165 & DWC165c Service Manual

8.2 8.3 8.4

CONNECTING A TELEPHONE ANSWERING DEVICE.......................8-2 CONNECTING A TELEPHONE EXTENSION.....................................8-3 HANDSET ............................................................................... -4 8

9.

INSTALLATION OF THE LINKFAX 8 MODULE IN WINDOWS 95 ENVIRONMENT....................... 9-1

10. USER GUIDE OF THE LINKFAX 8 MODULE IN WINDOWS 95 ENVIRONMENT..................... 10-1 11. INSTALLATION OF THE LINKFAX 8 MODULE IN WINDOWS 3.1X ENVIRONMENT.................. 11-1 12. USER GUIDE OF THE LINKFAX 8 MODULE IN WINDOWS 3.1X ENVIRONMENT.................. 12-1 13. SPARE PARTS LISTINGS....................................13-1

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XEROX DFC165 & DWC165c Service Manual

1. INTRODUCTION

The two models referred to in this manual are desktop facsimile machines with a bubble ink jet printing system which complies with the ITU-TS G3 standard for document transmission and reception. The most suitable factor to distinguish between the two models, similar in appearance, is the possibility of using a monochrome print head only or both monochrome and colour print heads. The colour model, once connected to a PC equipped with the LinkFax 8 software communication module, can be transformed into a multifunctional product able to perform both printer and scanner functions in addition to the facsimile traditional features. The colour print head must be used only for printing purposes. All standard facsimile functions require a monochrome print head. In this manual, the two models are referred to as follows:

standard model (monochrome)

LinkFax model (colour)

1.1 MAIN FEATURES
· Bubble ink jet printing The facsimile machine prints on plain paper (standard model) or special paper (LinkFax model) in various formats (A4, Letter, Legal). · Memory capacity The facsimile machine has a memory which enables operations such as Onetouch Dialling, Speed Code Dialling, Broadcasting Transmission, Delayed Transmission and Substitute Reception, as well as the storage of parameters, data and documents. This memory is powered by a backup battery in the event of a power failure. · Half tones In the scanning of documents, a scale of 64 half tones can be used for a higher
XEROX DFC165 & DWC165c Service Manual 1-1

quality reproduction of photographs and pictures. · Automatic document feeder (ADF) This device enables up to 10 sheets of A4, A5, Letter US or Legal paper, with a maximum thickness of 0.1 mm/sheet, to be fed in automatically. · Telephone answering device (TAD) The model without a built-an TAD can be connected to an external one.

1.2 TECHNICAL SPECIFICATIONS
Physical characteristics Type Dimensions (L, D, H) Weight Operator console Display Keypad 2 lines of 16 characters - 11 function keys of which 7 are dual function - 12 dual-function keys for normal dialling and user name setting - 10 one-touch dialling keys - 1 error LED Desktop transceiver 324 x 325 (+ 1701 + 1182) x 230 (+ 602)mm 6.3 kg

Power supply Operating range Average consumption Communication characteristics Type of connection Compatibility Type of modulation Transmission speed Public telephone network (PSTN) or private branch exchange (PBX) ITU-TS G3 standard CCITT V29 / V27ter 2400 / 4800 / 7200 / 9600 bps 220-240V, 50/60Hz 11W (in standby); less than 30W (copying)

(1) with the document output tray
1-2

(2) with extension

> >

XEROX DFC165 & DWC165c Service Manual

Type of communication Coding methods Transmission time Scanner Scanning system Resolution Document size (width x length) Actual scanning area Automatic document feeder (ADF)

Half duplex MH, MR About 15 s for ITU-TS test sheet n ° (Slerexe Letter) 1 at 9600 bps in standard resolution

CCD (Charge Coupled Device) Vertical: 3.85 (standard) / 7.7 (fine) lines/mm Horizontal: 8 dots/mm From 148 x 105 mm (minimum length) to 216 x 2000 mm (maximum length) Horizontal: 210 mm Vertical: within 4 mm of the edge of the document Capacity: 10 sheets of A4 / Letter US / Legal format (thickness max 0.1 mm/sheet) Thickness of sheets: min 0.06 mm, max 0.12 mm The facsimile machine can emphasize the contrast of text areas and reproduce pictures with 64 half tones. Three levels are handled: dark, normal and light

Half tones

Contrast Printer Printing method Printing speed Automatic sheet feeder Print resolution Actual printing area Memory Capacity

Bubble ink jet on plain paper (standard model) or special paper (LinkFax model) ITU-TS test sheet n ° (Slerexe Letter) / about 40 s 1 Capacity: 80 sheets of A4 / Letter US / Legal format (weight 70-90g/m2) 200 x 100 / 200 dpi 208 x 290 (A4) / 273 (Letter US) / 349 (Legal) mm

512 kbytes (about 360 kbytes as user memory) powered by a backup battery

> >
XEROX DFC165 & DWC165c Service Manual 1-3

Dialling Dialling mode Dialling on facsimile machine Redialling One-touch dialling Speed code dialling Delayed transmission Broadcasting transmission Other features Automatic reception Polling Reports Environmental conditions Temperature Operating: from 5° to 35° C C Storage:from 0° to +45° C C Transport:from -15 ° to +45° C C Operating: from 15% to 85 % (without condensation) Storage: from 15% to 85 % (without condensation) Transport: from 5% to 95 % (without condensation) The facsimile machine can be set to receive a document automatically Polling reception and free polling trasmission features are available Various kinds of reports may be printed (transmission, activity, etc.) Pulse and tone The number can be dialled directly on the facsimile machine's keypad A number can be redialled in automatic or manual mode There are 10 one-touch dialling keys There are 32 memory locations, each of which may be assigned a facsimile ID A document can be sent automatically at a preset time A document may be sent automatically to several correspondents (max 10).

Relative humidity

1-4

XEROX DFC165 & DWC165c Service Manual

1.3 QUICK REFERENCE GUIDE
1.3.1 Sending a Fax
1. Insert the document into the automatic document feeder.

ê

2. Press the HOOK key and dial the correspondent's number on the numeric keypad.
S. DIAL

RX MODE

RESOL.

CONTR.

LAST TX

- VOLUME + EXT. HOLD

3. Wait for the answering tone from the correspondent's machine and then press START.

î

REDIAL

HOOK

START

í

PAUSE

2.TONE

ERROR

STOP

1.3.2 Receiving a Fax
1. The facsimile machine is normally set for automatic reception: the message AUTOMATIC RX is displayed. 2. If you want to receive a fax in manual mode, press the RX MODE key: the message MANUAL RX will be displayed.

RX MODE

ê
REDIAL

RESOL.

CONTR.

S. DIAL

LAST TX

- VOLUME + EXT. HOLD

PAUSE

2.TONE

HOOK

START

STOP

ERROR

1.3.3 Using the Facsimile Machine as a Photocopier
1. Insert the document into the automatic document feeder.
S. DIAL

RX MODE

RESOL.

CONTR.

LAST TX

- VOLUME + EXT. HOLD

2. Type on the numeric keypad the number of copies to start (max. 50 copies) 3. Press the START key.

REDIAL

HOOK

START

ê

PAUSE

2.TONE

STOP

ERROR

n XEROX DFC165 & DWC165c Service Manual 1-5 .

2. GENERAL DESCRIPTION

2.1 EXTERNAL PARTS
The figure shows the main external parts, of the facsimile machine. Automatic sheet feeder (ASF) cover Automatic Document Feeder (ADF) guides

Console Document tray

Received and copied document tray

TAD socket TEL2

Telephone socket TEL1

Line socket LINE

Fig. 2-1 External parts of the facsimile machine
XEROX DFC165 & DWC 165c Service Manual 2-1

2.1.1 Console

PQRS

WXYZ

Fig. 2-2 Console layout The console comprises: · a display consisting of 2 lines of 16 characters each · a keypad consisting of: 11 function keys ( HOOK - START - STOP - S. DIAL - LAST TX - EXT. - HOLD FUNCTION - RX MODE - RESOL. - CONTR.) of which 7 are dual function keys (CLEAR - VOLUME+ - VOLUME- - A a - REDIAL - PAUSE - 2.TONE) 12 dual-function keys: for normal dialling (0 - 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 * - #) or user name setting (ABC - DEF - GHI - JKL - MNO - PQRS - TUV - WXYZ - P T - &...) 10 keys for one-touch dialling 1 LED for indicating an ERROR.

-

-

2-2

XEROX DFC165 & DWC165c Service Manual

2.1.2 Functions of the console keys
Some keys perform different functions according to the current operating mode of the facsimile machine:

· Stand-by mode with document on the ADF , Stand-by mode without document on the ADF Function mode (activated by pressing the FUNCTION key), irrespective of ,,
the presence of a document on the ADF Hook mode (activated by pressing the HOOK key). Mode Functions

Key

Number keys

·,, Used for dialling numbers. Select alphanumeric characters for inclusion in the mnemonic ID.

·,, In pulse dialling mode, changes the dialling mode to tone.
«



In tone dialling mode, emits a tone on line for special network servces. Scrolls forwards through the special characters and symbols available for the mnemonic ID or selects the + character for the user's telephone number.

·,, In tone dialling mode, emits a tone on line for special network
#



services. Scrolls backwards through the special characters and symbols available for the mnemonic ID.

FUNCTION

·, Provides access to operator selection menus and
submenus.

RX MODE CLEAR RESOL. < - VOLUME

·, Changes the reception mode: automatic, manual, FAX/
TEL, FAX/TAD. ·, Clears incorrect settings.

· ,,

Selects the type of resolution. Moves the cursor left during entry of the user's name and number. Reduces the volume of the speaker. > >

XEROX DFC165 & DWC 165c Service Manual

2-3

Key CONTR. > VOLUME + S. DIAL A a

Mode

Functions Selects the type of contrast. Moves the cursor right during entry of the user's name and number. Increases the volume of the speaker.

· ,,,

·, Enables the setting of a two-digit code for speed dialling. Changes from capitals to small letters (or vice versa)
during entry of the mnemonic ID.

LAST TX REDIAL EXT. PAUSE

·, Pressed once, displays the result of the last transmission. ·, Pressed twice, redials the last number.
When the facsimile machine is connected to a private branch exchange, enables access to the public line. ·, Inserts a pause in automatic dialling and in speed and onetouch dial settings.

·

HOLD 2. TONE

· Puts a telephone call on hold. ·, Sets the second tone in automatic dialling and in speed and
one-touch dial settings.

HOOK

·, Enables the user to dial the number without lifting the
receiver and to monitor the tones through the speaker.

·
Keys 01-10

, ·

Start one-touch dialling the fax number associated with the key. Enable the telephone number associated with the key to be dialled when the START key is pressed. Used for programming a one-touch dialling number. Switches off the ERROR LED. Stops copying, sending or receiving a document. Sets the facsimile machine in standby mode. > >

STOP



2-4

XEROX DFC165 & DWC165c Service Manual

Key

Mode

Functions Starts copying the document on the ADF. After the number has been dialled, starts sending the document on the ADF. After a one-touch dial key has been pressed, starts dialling the programmed telephone number. After the receiver has been lifted, sets the facsimile machine in manual reception mode. Confirms menus, submenus, parameters and values. Sets the facsimile in manual reception mode.

·
START

,

,,

XEROX DFC165 & DWC 165c Service Manual

2-5

2.2 ELECTROMECHANICAL PARTS
2.2.1 Motors
Rear right-hand side

paper motor carriage motor Rear left-hand side

ink drain motor

scanner motor

Fig. 2-3 Locating the motors
2-6 XEROX DFC165 & DWC165c Service Manual

2.2.2 Sensors

document end sensor

document sensor

console sensor

Fig. 2-4 Locating the console sensors Printer cover sensor

paper sensor (under paper guide cradle) Fig. 2-5 Locating the paper and printer sensors

paper edge sensor

Fig. 2-6 Locating the carriage sensor
XEROX DFC165 & DWC 165c Service Manual 2-7

2.2.3 Speaker

speaker

Fig. 2-7 Locating the speaker

2-8

XEROX DFC165 & DWC165c Service Manual

2.3 ELECTRONIC PARTS
Figure 2-8 shows the boards assembled on the facsimile machine.

3

4

2

5 6 7

1

8

Fig. 2-8 Locating the boards 1. 2. 3. 4. 5. 6. 7. 8. Console board CCD board Power supply board Print head driver board (in the print carriage) Network control unit (NCU) board Parallel port card (LinkFax model, only) Motherboard LED array for illuminating the documents.
2-9

XEROX DFC165 & DWC 165c Service Manual

2.3.1 General Block Diagram
Mains voltage

Display

Power supply board

Console board Optical unit Scanner unit CCD board

Print unit Print carriage Driver board

Motherboard

NCU board

Parallel port card

Telephone network

Telephone

Telephone PC orTAD (LinkFax model only)

Fig. 2-9 General block diagram The facsimile machine comprises the following main units: · Motherboard · Network control unit (NCU) board · Console board, with the display · Power supply board · Parallel port card, for connectiion to the PC (LinkFax model, only)
2-10 XEROX DFC165 & DWC165c Service Manual

· Optical unit, consisting of the scanner unit and CCD board · Printer unit, consisting of the print head driver board (in the carriage) and the carriage drive mechanism.

2.3.2 Block Diagram of the Motherboard
The motherboard controls the entire machine by means of a central processing unit (CPU) which uses special circuits to handle four main functional units: the image processor (for processing the scanned document), the motors (for activating all the mechanical parts), the print head (for printing both received and copied documents) and the modem (for controlling the signals to and from the telephone network).

256 kB EPROM

8 kB static memory

512 kB dynamic memory to print head

CPU to print head driver Step motor driver to carriage motor

I/O channel controller

Custom component ASIC

Modem

to paper motor

Image processor

Step motor driver

to scanner motor to ink drain motor

to CCD board

to NCU board

to console board

to the parallel port card

Telephone network

PC

Fig. 2-10 Block diagram of the motherboard

XEROX DFC165 & DWC 165c Service Manual

2-11

1

2

3

4

5

6

7

8

9

10 11 12

13

6

14

Fig. 2-11 Locating the motherboard components

1 2 3 4 5 6 7

CUSTOM COMPONENT ASIC MODEM CIRCUITS STATIC RAM (8 x 8 kbytes) QUARTZ CRYSTAL FOR MODEM CLOCK (20.736 MHz) QUARTZ CRYSTAL FOR SYSTEM CLOCK (16 MHz) PAPER, SCANNER AND INK DRAIN MOTOR DRIVERS BACK-UP RECHARGEABLE BATTERY FOR DYNAMIC RAM (Ni-Cd, 3 volts, 72-hour duration)

8 9

SYSTEM BATTERY (Lithium, 3 volts, 5-year duration) QUARTZ CRYSTAL FOR ASIC (16 MHz)

10 DYNAMIC RAM (512 kbytes) 11 SYSTEM FIRMWARE EPROM (256 kbytes) 12 QUARTZ CRYSTAL FOR RTC (32.768 kHz) 13 CPU (WITH BUILT-IN MODEM AND IMAGE PROCESSOR) 14 CARRIAGE MOTOR DRIVER

2-12

XEROX DFC165 & DWC165c Service Manual

The memory block, divided into the following three sections, is an integral part of the motherboard:

EPROM

Static RAM

Dynamic RAM

· EPROM (256 Kbytes), this memory contains the system firmware, the default settings of the software parameters and the messages in the various languages · STATIC RAM (8 kbytes), this memory contains: the current user and service software parameters the calibration settings (alignment settings, CCD settings) the telephone number list (one-touch dialling numbers, speed code dialling numbers, broadcasting lists) the power failure repor.

· DYNAMIC RAM (512 kbytes), this memory contains: the compression and decompression buffer the scanning buffer the print buffer the transaction memory (activity reports) the user memory (documents to send, documents received in the memory).

The data is retained in the dynamic memory even during a power failure by a backup battery capable of powering the system for 72 hours. The facsimile machine must be left powered for 24 hours to recharge this battery. The data is retained in the static memory by the 5-year duration system battery.

XEROX DFC165 & DWC 165c Service Manual

2-13

2.3.3 Block Diagram of the Network Control Unit Board
The NCU (Network Control Unit) board acts as the physical interface with the telephone line. The NCU board is available in several versions, to suit the specific needs of each country. The figure shows the block diagram of a generic NCU board.
external TAD interface

Call detector

Motherboard

Receiver detector relay Line transf. Selector relay Selector relay Telephone line XEROX DFC165 & DWC165c Service Manual

TX

Amplifier

RX

Fig. 2-12 Block diagram of a generic NCU board

2-14

Telephone

Current detector

2.3.4 Block Diagram of the Power Supply Board

2A Fuse Mains voltage Mains filter Primary rectifier Diode rectifier Switching controller MOS Voltage reg. +24 V 2-15 -12 V +12 V +5 V +28 V

Switching transformer

Fig. 2-13 Block diagram of the power supply board

The power supply board provides a maximum power of 35 Watts and supplies, via the switching circuit, the following direct voltages: - +28 VDC (±10%), for the motors, variable according to the load - +24 VDC (±2%), for the print head - +12 VDC (±10%), for CCD, NCU and logic circuits - -12 VDC (+10% -15%), for CCD and logic circuits - +5 VDC (±5%) for sensors and logic circuits.

XEROX DFC165 & DWC 165c Service Manual

1

2

3

4

5

6

7

8

9

PF +28 V GND GND GND +24 V +5 V +12 V -12 V

to motherboard

Fig. 2-12a Locating the power supply components 1 2 3
2-16

Mains filter Primary rectifier Switching controller MOS

4 5 6

Stabilizer +24 VDC regulator Mains connector

7 8 9

Fuse (2 A) Transformer Diode rectifier

XEROX DFC165 & DWC165c Service Manual

2.3.5 Printer Unit
The facsimile machine has a bubble ink jet system which uses a special head and prints on plain paper. The bubble ink jet print head consists of an interchangeable cartridge, which contains a sponge soaked with liquid ink, which is ejected from 50 nozzles made of a nickel and gold component, under the control of the signals that reach an electrical circuit consisting of 50 resistors (Fig. 2-13).

electrical circuit nozzles sponge cartridge

Fig. 2-13 Composition of the print head

nozzle

Each nozzle generates a drop of ink when the corresponding resistor is powered (+24 Volt) for a few microseconds.

resistor

+24V

The resistor is heated and the ink that is in direct contact with it evaporates, expanding like a bubble and pressing the rest of the ink against the nozzle.

bubble

ink

+24V XEROX DFC165 & DWC 165c Service Manual 2-17

drop

15 m/s

As a result, a drop of ink is ejected from the nozzle at a speed of 15 metres a second until it strikes the paper on which it makes a dot.
+24V

When the resistor is powered off, the bubble collapses quickly, drawing from the sponge a quantity of ink equal to the amount ejected. 800 microseconds after the ink has been ejected, the nozzle is ready to eject another drop.

dot

bubble

0V

n 2-18 XEROX DFC165 & DWC165c Service Manual

3. INSTALLATION AND INITIALIZATION PROCEDURES

Installation of the facsimile machine consists of three separate phases: 1. PRELIMINARY OPERATIONS, or fitting together the parts supplied in the packaging and subsequent connection of the facsimile machine and telephone, if present, to the telephone network 2. INSTALLATION, or setting the parameters indispensable for the facsimile machine's operation. 3. SETUP, or setting the customization parameters.

3.1 PRELIMINARY OPERATIONS
3.1.1 Unpacking the Facsimile Machine
Having removed the facsimile machine and the other parts from the packaging, check that the following elements are present: · the facsimile machine (complete with power cord) · a packet containing the print head · the telephone cable (with two international RJ11 connectors) · an adapter for the telephone cable (only required in some countries) · the document tray, with a pull-out extension · the received or copied document tray · the automatic sheet feeder (ASF), with a pull-out extension · the User Guide, complete with the Quick Reference Guide.

XEROX DFC165 & DWC165c Service Manual

3-1

3.1.2 Connecting to the Telephone Line
WARNING: check that the power cable is plugged into the power outlet, before connecting the facsimile machine to the telephone line.

To connect the facsimile machine to the telephone line, plug one end of the telephone cable to the line socket (LINE) on the facsimile machine and the other end into a wall socket (see Fig. 3-1, a) or using the adapter if necessary (see Fig. 3-1, b).

a)

line socket (LINE) b) Fig. 3-1 Connecting the facsimile machine to the telephone line To connect a telephone to the telephone network, proceed in either of the following two ways: a) if the telephone has a national plug (case a), insert the plug into the adapter (see Fig. 3-2, a) or specific wall telephone socket (see Fig. 3-2, b) b) if the telephone has an international connector (case b), remove the precut tab that covers the telephone socket (TEL1) of the facsimile machine, then insert the connector directly into the telephone socket (see Fig. 3-3). Important As the telephone connection depends on regulations that vary from one country to another, figures 3-2 and 3-3 show an intentionally generic connection: for a detailed description of the procedure, see the regulations in force in your own country.
3-2 XEROX DFC165 & DWC165c Service Manual

Fig. 3-2 Connecting the telephone (case a)

to telephone socket on facsimile machine

telephone socket (TEL1)

Fig. 3-3 Connecting the telephone (case b)
XEROX DFC165 & DWC165c Service Manual 3-3

3.1.3 Connecting the Power Cord
Plug the power cord into the wall socket.

3.1.4 Installing the Print Head
1) Power on the facsimile machine and wait for the following message to appear:

CHECK PRINT HEAD

WARNING:

if the message does not appear in your language, carry out the country setup procedure described in section 3.2.2 and continue with this procedure from step 2

2) Open the print head packet and remove the sealed box containing the print head. 3) Open the box and remove the print head, holding it by the grip, then remove the label covering the nozzles (see Fig. 3-4)

Fig. 3-4 Removing the protective label
WARNING: do not touch the electrical contacts or the print head nozzles

NO
3-4 XEROX DFC165 & DWC165c Service Manual

In addition, if the print head has an interchangeable cartridge, do

not separate the cartridge from the print head

NO
4) Tilt the printer cover, then insert the print head in position with the electrical contacts facing the front of the machine (Fig. 3-5)

Fig. 3-5 Inserting the print head 5) Taking care not to obstruct the hole on the top, insert your index finger in the recess on the print head and pull it until you hear it clearly click into position (Fig. 3-6)

Fig. 3-6 Fixing the print head in position

XEROX DFC165 & DWC165c Service Manual

3-5

6) Having inserted the print head, close the printer cover
WARNING: if a disposable print head has been inserted, the following

message generally appears:

NEW PRINT HEAD? 1=YES 0=NO

Should this message not appear, press the FUNCTION key three times, then press the START key to make it appear. Now type 1 and press the START key. 7) The facsimile machine automatically loads a sheet of paper and starts the nozzle cleaning and checking procedure, which ends by: · printing out the following print chart on the automatically loaded sheet (*)

numbered scale black areas

which contains: - - a numbered scale, for checking the flow of ink and the electrical circuits controlling the print head nozzles a section of graphics and text, for evaluating print quality
CHECK PRINTOUT 1=EXIT 0=REPEAT

· the following message appears (*) only if bit 2 of SW09 is set to 1.
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XEROX DFC165 & DWC165c Service Manual

8) Analyse the print chart as follows: · Check that there are no gaps in the numbered scale and that there are no horizontal white lines in the black areas: under these conditions, which indicate that the print head has been inserted correctly and is in perfect working order, type 1: the facsimile machine returns to stand-by and is ready for use · If there are gaps or white lines, type 0 to repeat the nozzle cleaning procedure: if the new print chart is still unsatisfactory, repeat the procedure again · If the printing quality is still not up to the required standard after the procedure has been performed three times, proceed as follows until a satisfactory print chart is obtained: Make a copy of a document with the desired type of graphics and text and assess its quality. Change the type of paper (the paper you are using may be too porous) and repeat the procedure. Remove and reinsert the print head. Remove the print head and check that there is no foreign body on the printing nib; if there is, remove it with care, taking care not to touch the electrical contacts; slide the print carriage to the right, then clean the print head cleaning pad using a cotton swab soaked in water, taking care not to leave any fluff (Fig. 3-7);

print head cleaning pad

Fig. 3-7 Cleaning the print head cleaning pad reinsert the print head.

XEROX DFC165 & DWC165c Service Manual

3-7

-

Remove the print head and clean the contacts with a piece of felt, pressing firmly (see Fig. 3-8);

Fig. 3-8 Cleaning the print head contacts clean the contacts on the print carriage with a soft, dry cloth (see Fig. 3-9);

contacts on print carriage Fig. 3-9 Cleaning the contacts on the print carriage reinsert the print head. Replace the print head Replace the print carriage (see section 7.2.15).

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XEROX DFC165 & DWC165c Service Manual

3.1.5 Inserting the Output Trays
Place the received or copied document tray on the guide tabs, and the document output tray between the two slots on the sides (see Figs. 3-10 and 3-11)

guide tabs

received or copied document tray

Fig. 3-10 Inserting the received or copied document tray

slot

document tray slot Fig. 3-11 Inserting the document tray

XEROX DFC165 & DWC165c Service Manual

3-9

3.1.6 Loading Paper
When adding paper to print received and copied documents, the following three factors must be taken into consideration and must always match for the facsimile machine to work properly: paper size, i.e. the width of the paper used ASF tray width, i.e. the distance between the inner sides of the ASF tray printing format, i.e. the setting of the FORMAT parameter in the PRINTER PARAMETERS menu

1) Check that the ASF is set for the paper size you wish to use, i.e. that the distance between the inner sides coincides with the width of the paper used. If it does not, remove the cover of the ASF by gripping it at the centre of its lower edge, position the two inner sides (using a screwdriver to release them at the bottom) to fit the paper used (Fig. 3-12):
l l

on the inner guides (1), for A4 format on the outer guides (2), for LETTER and LEGAL formats

2 1

1 2

left inner side

right inner side

Fig. 3-12 Preparing the automatic sheet feeder 2) Reassemble the cover and insert the ASF in its housing, then tilt the cover forward and load the paper of the desired size (max 70 sheets)(Fig. 3-13)

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XEROX DFC165 & DWC165c Service Manual

cover automatic sheet feeder

Fig. 3-13 Inserting the ASF and the paper 3) Close the cover of the ASF and set the FORMAT parameter in the PRINTER PARAMETERS menu to the value that corresponds to the size of the paper and width of the tray (see section 3.2.1). 4) Make a copy to check that the job has been carried out correctly: if any of the factors do not coincide, the following message will appear:
PAPER ERROR PRESS STOP

5) To eliminate the error, proceed as follows:
l l

switch off the facsimile machine remove the ASF and check that the distance between the inner sides corresponds to the width of the paper used power on the facsimile machine and check that the FORMAT parameter corresponds to the previous setting made reinsert the ASF.

l

l

3.1.7 Feeding special papers manually on the LinkFax model
When you use the LinkFax model as a printer, the following special papers can be used: Transparency film (with backing), Transparency film with border, Glossy paper, Coated paper, and Thick paper. If the paper to be used is not easily fed into the facsimile machine (i.e. it is too thick, too heavy or too smooth, as when transparency films with border and thick paper are used), it is necessary to feed it manually (see chapter 10, Using the facsimile machine as a printer, Printing with LinkFax 8).
XEROX DFC165 & DWC165c Service Manual 3-11

3.2 INSTALLING AND SETTING UP THE MACHINE
The procedures used for installing and setting up the machine may be divided into indispensable procedures (marked by the background ) and procedures that depend on the characteristics of the telephone exchange or the user's requirements (marked by the background ).

3.2.1 Organization of the Installation and Setup Parameters
The installation and setup parameters are organized into menus and submenus, shown on the display as follows: top line DISPLAY bottom line - the top line is used for displaying: ·menu and submenu items, which represent the operating selections available on the facsimile machine ·parameters, to which a value is to be assigned to make an operating selection

- the bottom line is used for displaying the keys that handle the items indicated on the top line, that is: FUNCTION for selecting menu and submenu items, which can be scrolled cyclically forwards only, i.e. from the first to the last and then skipping straight back to the first again START for confirming menu and submenu items, parameters and values: ·by confirming a menu, you access the corresponding submenu ·by confirming a submenu, you access the corresponding parameters ·by confirming a parameter or its value, you access the next parameter

3-12

XEROX DFC165 & DWC165c Service Manual

< >

for selecting the values of a parameter, scrolling forwards and backwards through those available on the machine, or for moving along the characters that make up the parameter value. In the latter case, the value must then be set using the numeric keypad for exiting from installation or setup mode.

STOP

A schematic diagram of parameter management is provided below:

OPERATING SELECTION
FUNCTION

PARAMETER SETTING

MENU

)FUNC )FUNC )FUNC
START

PARAMETER SELECTION SUBMENU

SETTING OF VALUE

)FUNCPARAMETERS START )START )START
<>
STOP START

VALUES

)> )>

EXIT FROM MODE

The figure that follows provides a detailed illustration of the organization of the installation and setup parameters.

XEROX DFC165 & DWC165c Service Manual

3-13

MENU
TX FROM MEMORY

SUBMENU
INSTALLATION TEL. LINE SET-UP LANGUAGE STATION NAME PHONE NUMBER DIAGNOSTICS PRINT INSTALL. SERVICE PARAM.

PRINT OUT REPORT FAX SET-UP DELAYED TX POLLING RX POLLING TX INSTALLATION

(*) These parameters are not displayed in some national versions.

SUBMENU
FAX SET-UP VARIOUS SETTINGS PRINTER PARAMET.

PARAMETERS
TEL. LINE SET-UP PUBL. LINE (PSTN) (*) PRIV. LINE (PBX) (*) PBX DIAL PSTN DIAL. EXT. LINE REMOTE START RING COUNT (*) FAX/TEL TIMER SILENCE LAPSE (*) LANGUAGE ITALIAN ENGLISH etc. STATION NAME TYPE YOUR NAME PHONE NUMBER (*) TYPE YOUR NUMBER DIAGNOSTICS REMOTE DIAG. LINE MONITOR SERVICE PARAM. TYPE PASSWORD COUNTRY SET-UP SERVICE SWITCHES SYSTEM TEST PRINT SERV. SW PRINT PROT. DUMP PRINT COUNTERS DATE AND TIME

DATE AND TIME ONE TOUCH DIAL CODED SPEED DIAL PRINT OUT SET-UP HEAD MAINTENANCE

PARAMETERS
VARIOUS SETTINGS ECM FAILED TX REPORT BROADC. REP. DELAY LIST TX SPEED HEADER RETRANS.DOC. CONF. TEL. NUM. COPY/TX RES. BUZZER VOL. ONE TOUCH DIAL TYPE ONE TOUCH NUMBER SPEED OVERSEAS NAME EDIT ANOTHER

CODED SPEED DIAL TYPE SPEED NO. NUMBER SPEED OVERSEAS NAME EDIT ANOTHER PRINTOUT SET -UP

PRINTER PARAMET. SIZE REDUCTION SURPLUS

FORMAT: DD/MM/YY FORMAT: 24H

PRINT SETTINGS PRINT: ONE TOUCH PRINT: SPEED DIAL PRINT: EXIT HEAD MAINTENANCE CLEANING

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XEROX DFC165 & DWC165c Service Manual

3.2.2 Setting the Country Parameters
This procedure enables you to adapt some specific parameters automatically to the values preset for a particular country. Setting Display
AUTOMATIC RX 09-05-95 14:58 FAX SET-UP FUNC/START/STOP

a) The facsimile machine is in stand-by mode

b) Press FUNCTION to access the main menu

c) Select the SERVICE SWITCHES submenu of the INSTALLATION menu.

SERVICE SWITCHES FUNC/START/STOP

d) Press START

TYPE PASSWORD

z
COUNTRY SETUP START/STOP/ /

e) Enter the number 1 1 0 0 and press START to enter "service" mode

f) Press START to confirm the COUNTRY SETUP item

AMERICA START/STOP/ /

g) Select the desired country (for example, U.K.), and then press START: the values for the selected country are automatically loaded, then the facsimile machine returns to stand-by mode.

U.K. START/STOP/ / AUTOMATIC RX 09-05-95 14:58

WARNING:

After setting the country parameters it is possible, whenever necessary, to reload the default values for the current country, by means of the following simplified procedure; - press in rapid sequence STOP # #
COUNTRY SETUP START/STOP/ / AUTOMATIC RX 09-05-95 14:58

- press START.

XEROX DFC165 & DWC165c Service Manual

3-15

3.2.3 Storing the User's Number and Name
Setting Display
AUTOMATIC RX 09-05-95 14:58

a) The facsimile machine is in stand-by mode

b) Access the main menu and select the STATION NAME item on the INSTALLATION menu c) Press START d) Enter the user's mnemonic ID: - you can use a maximum of 16 alphanumeric characters - select one character at a time using the numeric keys, as shown below: key key key key key key key key key key key key 1, characters: 1 2, characters: 2 A B 3, characters: 3 D E 4, characters: 4 G H 5, characters: 5 J K 6, characters: 6 M N 7, characters: 7 P R 8, characters: 8 T U 9, characters: 9 W X 0, characters: 0 Q Z *, characters: symbols #, characters: symbols C F I L O S V Y (selected "forwards") (selected "backwards")

STATION NAME FUNC/START/STOP TYPE YOUR NAME

z

Example
TYPE YOUR NAME JOHN

- each key selects the characters cyclically, starting from the numeric character and displaying each of the other characters when pressed - to change a capital letter into a lower case letter, or vice versa, press the key A a after entering it: the new mode will remain set until the same key is pressed again. - confirm the character selected by pressing the > key: the cursor will move one place to the right - to correct an error, move the cursor to the character to be changed using the > and < keys, and select the desired character.
3-16 XEROX DFC165 & DWC165c Service Manual

Setting - to delete the entire entry, press CLEAR - having made the entry, press START to access the PHONE NUMBER item

Display

PHONE NUMBER FUNC/START/STOP

e) Press START f) Enter your number:

TYPE YOUR NUMBER

z
Example

- you can enter a maximum of 16 characters using the numeric keys (0 : 9), the * key (to enter the + character) and the > key (to enter a space) - to correct or delete, proceed as for the mnemonic ID - having made the entry, press START

TYPE YOUR NUMBER +39 125 524598

DIAGNOSTICS FUNC/START/STOP

g) Press STOP to return to stand-by mode.

AUTOMATIC RX 09-05-95 14:58

3.2.4 Setting Up the Telephone Line
According to the type of network to which the facsimile machine is connected (PUBLIC NETWORK or PRIVATE BRANCH EXCHANGE), the following specific parameters must be set: - type of dialling (established by the Telephone Service Manager): · tone (or multifrequency) (PBX/PSTN DIAL: TONE) · pulse (PBX/PSTN DIAL: PULSE)

- type of access from private line to public line: · numeric prefix (EXT. LINE: PREFIX) · earth pulse (EXT. LINE: EARTH) · flash pulse (EXT. LINE: FLASH).
XEROX DFC165 & DWC165c Service Manual 3-17

In addition to these indispensable parameters, the following parameters may also be set: - enabling of extension telephone for activating the facsimile machine ( REMOTE START), by means of a one-digit code (0-9) - number of rings after which the facsimile machine prepares for automatic reception (RING COUNT: 01 / 02 / 04 / 08) - time (in seconds) after which the facsimile machine with the fax/phone feature enabled switches to fax mode (FAX/TEL TIMER: 15 / 20 / 30 / 40) - time (in seconds) after which the facsimile machine connected to an external telephone answering machine switches to fax mode, when there is no incoming message (SILENCE LAPSE: 3 / 4 / 6 / 8 / 10 / NO).
Setting

Display
AUTOMATIC RX 09-05-95 14:58

a) The facsimile machine is in stand-by mode

b) Access the main menu and select the TEL.LINE SETUP submenu of the INSTALLATION menu. c) Press START d) Set the parameters to the desired values, following the explanatory flow chart shown below:
TEL.LINE SET UP

TEL.LINE SETUP FUNC/START/STOP PUBL.LINE (PSTN) START/STOP/ /

PRIV. LINE (PBX) PBX DIAL:PULSE EXT.LINE:PREFIX TYPE PREFIX PSTN DIAL:PULSE

PUBL. LINE (PSTN) PBX DIAL:TONE EXT.LINE: FLASH

EXT.LINE EARTH

PSTN DIAL:TONE

REMOTE START:ON REMOTE START:OFF TYPE CODE RING COUNT: 01 FAX/TEL/FAX: 15 E LAPSE: 3 SILENCE LAPSE: 4 RING COUNT 02 FAX/TEL TIMER: 20 SILENCE LAPSE: 6 RING COUNTY:04 FAX/TEL TIMER: 30 SILENCE LAPSE 8 RING COUNT:08 FAX/TEL TIMER: 40 SILENCE LAPSE: 10 SILENCE LAP

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XEROX DFC165 & DWC165c Service Manual

3.2.5 Completing Installation
Installation may be completed by setting the FAX SET-UP to suit the user's needs. See the User Manual for a description of the procedure to be followed.

3.2.6 Resetting the Fax Machine
Having installed the machine, if it does not work properly in reception and transmission, reset the parameters to restore the default values and repeat the installation procedure from the start. Setting Display
AUTOMATIC RX 09-05-95 14:58

a) The facsimile machine is in stand-by mode

b) Access the main menu and select the SERVICE SWITCHES submenu of the INSTALLATION menu.

SERVICE SWITCHES FUNC/START/STOP

c) Press START

TYPE PASSWORD

z
COUNTRY SETUP START/STOP/ /

d) Enter the number 1 1 0 0 and press START to enter "service" mode

e) Select the SYSTEM TEST item and press START

SYSTEM TEST START/STOP/ /

f) Select LOAD DEFAULT and press START twice: the default values for U.K./SOUTH AFRICA are loaded automatically in place of those set previously g) Press STOP to return to stand-by mode.

LOAD DEFAULT START/STOP/ / AUTOMATIC RX 09-05-95 14:58

WARNING:

having installed the machine successfully, never repeat the reset procedure or you will have to reset all personal data set by the user.
n

XEROX DFC165 & DWC165c Service Manual

3-19 .

4. SERVICE SWITCHES

The term service switches is intended to mean parameters that cannot be accessed by the user and that can only be accessed by service technicians with the facsimile machine in "service" mode (see section 3.2.2). These parameters are given default values which depend on the country specifications made by the telephone network manager. As a result, the technician should only change these values in order to correct the functioning of the machine or to adapt it to particular local features. Before changing any of the service switch settings, it is advisable to print them, as described below: Setting Display
AUTOMATIC RX 09-05-95 14:58

a) The facsimile machine is in standby mode

b) Access the main menu and select the SERVICE SWITCHES submenu of the INSTALLATION menu

SERVICE SWITCHES FUNC/START/STOP

c) Press START

TYPE PASSWORD

z
COUNTRY SETUP START/STOP/ /

d) Enter the number 1 1 0 0 and press START to enter "service mode"

e) Select the PRINT SERV. SW option

PRINT SERV. SW START/STOP/ /

f) Press the START key: the current default values will be printed (see fig. 4-1)

PRINTING... STOP

g) Press STOP to return to standby mode.

AUTOMATIC RX 09-05-95 14:58

XEROX DFC165 & DWC165c Service Manual

4-1

Fig. 4-1 Example of a printout of the service switch settings Two types of service switches are available in the SERVICE SWITCHES menu: SW01 - SW11: these switches consist of 8 bits and can be programmed either individually or in group
SERVICE SWITCHES SW01 01010101

bit no. 76543210 SWA - SWR: these switches consist of a value ranging from 1 to 3 digits
SERVICE SWITCHES SWR 120

Warning:

1) Whenever no value is printed in correspondence with a service switch SWA-SWR, this means that the value is 0 (zero). 2) Some of the service switches can be set by the user; in these cases, the user setting takes priority over the service setting. The parameters concerned are: User parameter RING COUNT FAX/TEL TIMER SILENCE LAPSE Software parameter SWB SWM SWO
XEROX DFC165 & DWC165c Service Manual

4-2

4.1 SERVICE SWITCH TABLES
The tables that follow describe the functions carried out by the bits and combinations of bits for each service switch. In order to correctly interpret some of the functions required, a knowledge of the communication protocol is required. The default values may undergo some modifications due to both homologation and user's peculiarities. For this reason, you are recommended to print out the service switches of the facsimile machine to be serviced, always before modifying them. Switch SW01

bit 7

Function Error code generated on failed reception

set to 1 YES

set to 0 NO

6

Next page sent from the ADF or resent from memory despite bad reception signal (RTN) from the receiver

YES

NO

5 4

Multifrequency output level (dBm)

bit 5 4 = bit 5 4 = bit 5 4 = bit 5 4 =

0 0 1 1

0, 1, 0, 1,

-11 / -9 -8 / -6 -12 / -10 -10 / -8

3 2

Cable equalizer in reception (radius of cable = 0.4 mm)

bit 3 2 = 0 bit 3 2 = 0 bit 3 2 = 1 bit 3 2 = 1

0, 0 km (0 dB) 1, 1.8 km (4 dB) 0, 3.6 km (8 dB) 1, 5.6 km (12 dB)

1 0

Cable equalizer in transmission (radius of cable = 0.4 mm)

bit 1 0 = bit 1 0 = bit 1 0 = bit 1 0 =

0 0 1 1

0, 0 km (0 dB) 1, 1.8 km (4 dB) 0, 3.6 km (8 dB) 1, 5.6 km (12 dB)

XEROX DFC165 & DWC165c Service Manual

4-3

Switch SW02

bit 7

Function Answer to second signal from the receiver (anti-echo device)

set to 1

set to 0

YES

NO

6 5 4

Tone duration / pause in tone dialling (ms / ms)

bit 6 5 4 = bit 6 5 4 = bit 6 5 4 = bit 6 5 4 = bit 6 5 4 =

0 0 0 0 1

0 0 1 1 0

0, 70 / 70 1, 70 / 140 0, 87 / 87 1, 120 / 120 0, 200 / 200

3

Disable non standard features (NSF)

YES

NO

2

Reception start speed

9600-2400 4800-2400 (V.29,V.27ter) (V.27ter only)

1 0

Transmission start speed

bit 1 0 = bit 1 0 = bit 1 0 = bit 1 0 =

0 0 1 1

0, 1, 0, 1,

9600 7200 4800 2400

bps bps bps bps

4-4

XEROX DFC165 & DWC165c Service Manual

Switch SW03

bit 7

Function Page loss when SURPLUS = AUTO

set to 1 12 mm

set to 0 8 mm

6

Automatic transmission in HOOK mode without pressing START at the end of dialling

YES

NO

5

Transmission of the tone emitted by the receiver during reception (CED)

NO

YES

4

Anti-echo protect tone in transmission

YES

NO

3

Reception sensitivity

-47 dBm

-43 dBm

2 1

Wait time for signal from receiver during transmission

bit 2 1 = bit 2 1 = bit 2 1 = bit 2 1 =

0 0 1 1

0, 1, 0, 1,

35 s (*) 60 s (*) 90 s (*) 130 s (*)

0

Frequency of the tone emitted by the receiver during reception (CED)

1100 Hz

2100 Hz

(*) In some countries these bits are set to a single specific value.

XEROX DFC165 & DWC165c Service Manual

4-5

Switch SW04

bit

Function

set to 1 bit 7 6 = bit 7 6 = bit 7 6 = bit 7 6 =

set to 0 0 0, strict 0 1, average 1 0, moderate 1 1, loose

7 6

Reception channel evaluation criteria

5

Pause between digits in pulse dialling

800 ms

900 ms

4 3

Dial pulses (N = digits dialled)

bit 4 3 = 0 0, N bit 4 3 = 0 1, N + 1 bit 4 3 = 1 0, 10 - N

2

Pulse dialling frequency

20 p/s (*)

10 p/s

1

Report printing inhibited

always

(**)

0

PBX dialling tone detection

YES

NO

(*)

only valid if the value of switch SWP is halved.

(**) as programmed via TX REPORT user parameter.

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XEROX DFC165 & DWC165c Service Manual

Switch SW05

bit 7

Function Earth pulse duration

set to 1 100 ms

set to 0 300 ms

6

Flash pulse duration

110 ms

270 ms

5 4

Pause time

bit 5 4 = bit 5 4 = bit 5 4 = bit 5 4 =

0 0 1 1

0, 2 s 1, 3 s 0, 4 s 1, 5 s

3

PAUSE key enabling

NO

YES

2

Limit to the number of pauses that may be inserted

unlimited number

for 11 s max

1 0

Predialling pause (*)

bit 1 0 = bit 1 0 = bit 1 0 = bit 1 0 =

0 0 1 1

0, 1 s 1, 2 s 0, 3 s 1, 4 s

(*) only valid if dial tone detection is not enabled (SW06, bit 2 = 0).

XEROX DFC165 & DWC165c Service Manual

4-7

Switch SW06

bit

Function

set to 1 bit 7 6 = bit 7 6 = bit 7 6 = bit 7 6 = 0 0 1 1 0, 1, 0, 1,

set to 0 320 360 300 300 / / / / 570 520 640 640 Hz Hz Hz Hz

7 6

Dialling tone frequency range

5 4 3

Dialling tone detection time

bit 5 4 3 = bit 5 4 3 = bit 5 4 3 = bit 5 4 3 = bit 5 4 3 = bit 5 4 3 =

0 0 0 0 1 1

0 0 1 1 0 0

0, 400 ms 1, 800 ms 0, 900 ms 1, 1200 ms 0, 1800 ms 1, 2000 ms

2

PSTN dialling tone detection

YES

NO

1

Shortcircuit between digits in pulse dialling

YES

NO

0

Shortcircuit time on relay, before and after dialling pulse

260 / 70 ms

86 / 48 ms

4-8

XEROX DFC165 & DWC165c Service Manual

Switch SW07

bit

Function Busy tone detected after dialling

set to 1

set to 0

7

YES

NO

6

Exchange tones detected during preliminary phase of reception

YES

NO

5

Rapid preamble recognition during the handshake phase

YES

NO

4

Minimum memory space reserved to receiving

128 kbytes

17 kbytes

3

Report always printed on failed transmission

YES

NO

2

Busy tone seek time after dialling

20 s

standard (*)

1

Frequency range of second dialling tone

1120:1160 Hz as for the 1st Belgian type dialling tone

0

Dialling tone wait time

40 s

10 s

(*) i.e., as established by the couple of bits 1 and 2 of switch SW03.

XEROX DFC165 & DWC165c Service Manual

4-9

Switch SW08

bit 7

Function Full line monitoring

set to 1 YES

set to 0 NO

6

Transmission retries limited within a fixed time range (*)

YES

NO

4 5

Dialling tone detection threshold

bit 5 4 = bit 5 4 = bit 5 4 = bit 5 4 =

0 0 1 1

0, 1, 0, 1,

-40 -30 -26 -35

dBm dBm dBm dBm

3

Line feed (*)

1/300"

1/150"

2

Exit from HOOK mode

after 1 h

after 1 min

1

Busy tone detected before dialling

YES

NO

0

Busy tone sequence

4 sequences 2 sequences

(*) LinkFax model, only

4-10

XEROX DFC165 & DWC165c Service Manual

Switch SW09

bit 7

Function Switching off ERROR LED

set to 1 manual

set to 0 automatic after 1 min

5 6

Maximum reception/transmission time for one page

bit 6 5 = bit 6 5 = bit 6 5 = bit 6 5 =

0 0, 8 min 0 1, 16 min 1 0, 32 min 1 1, unlimited

4

Size of data block packets in ECM

64 bytes (*)

256 bytes

3

Compression method

MR & MH

MH

2

Print chart enabled

YES

NO

1

Frequency and sequence of answer tone in FAX/TEL mode

Type B (**)

Type A (***)

0

Extended error codes

YES

NO

(*) only to be used on lines with interference (**) Frequency: 425 Hz Sequence:
1s 4s

(***) Frequency: 700 Hz Sequence:
0.1 s 0.1 s 0.1 s 0.1 s 0.1 s 2s

XEROX DFC165 & DWC165c Service Manual

4-11

Switch SW10 (to enable / disable user-level functions)

bit

Function Change in dialling mode by pressing the ¬ key disabled

set to 1

set to 0

7

YES

NO

6

MMR compression method (*)

YES

NO

5

Enable remote diagnostics

YES

NO

4

Set number of rings

YES

NO

3

Enable pulse mode during dialling

YES

NO

2

Set silence time detection

YES

NO

1

FAX/TEL switch

YES

NO

0

Set call time in FAX/TEL mode

YES

NO

(*) LinkFax model, only

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XEROX DFC165 & DWC165c Service Manual

Switch SW11 (to enable / disable user-level functions)

bit 7

Function Enable FAX/TAD

set to 1 NO

set to 0 YES

6

Not used

5

Reserved

4

Protection for telephone credit card (*)

YES

NO

3

How the console key names are displayed

always in the selected in English language

2

Linking between letters and numeric keys

fixed to 1 (never set to 0)

1

Disable "second tone" function of HOLD - 2.TONE key

NO

YES

0

Enable entry of sender's number

YES

NO

(*)

In order to prevent the secret card code from being either displayed or printed, only the last 10 digits of the telephone number are displayed or printed.

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Switch SWA Format 1 digit (0 : 9) Function Time before answering (in seconds)

Switch SWB Format 2 digits (01 : 10) Function Number of rings before answering

Switch SWC Format max 3 digits (001 : 255) Function First ring detection time (in tens of ms)

Switch SWD Format max 3 digits (001 : 255) Function Second ring detection time (in tens of ms)

Switch SWE Format max 3 digits (001 : 255) Function Ring reset time (in hundreds of ms)

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XEROX DFC165 & DWC165c Service Manual

Switch SWF Format max 2 digits (00 : 15) Function Maximum percentage of incorrect lines on a page without an error message (00 = function disabled)

Switch SWG Format max 2 digits (00 : 15) Function Maximum number of incorrect lines on a page without an error message (00 = function disabled)

Switch SWH Format max 2 digits (00 : 15) (*) (*) 03 : 15 for Italy. Switch SWI Format max 3 digits (010 : 100) Function Minimum ring duration (in ms) Function Transmission level code (in dBm)

Switch SWJ Format max 3 digits (010 : 100) Function Maximum ring duration (in ms)

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Switch SWK Format max 2 digits (00 : 99) Function Number rings before answering in manual reception mode (00 = no answer in manual RX)

Switch SWL Format max 2 digits (01 : 99) Function Wait time of the tone emitted by the sender before alarm to the operator in FAX/TEL mode (in seconds)

Switch SWM

Format max 2 digits (01 : 99)

Function Alarm duration in FAX/TEL mode (in seconds)

Switch SWN

Format max 2 digits (01 : 99)

Function Time between two calls while broadcasting (in seconds)

Switch SWO Format max 2 digits (01 : 59) Function Silence recognition time in FAX/TAD mode (in seconds)

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XEROX DFC165 & DWC165c Service Manual

Switch SWP Format max 2 digits (50 : 80) Function Break time in pulse dialling (in ms) (*)

(*) with a pulse dialling frequency of 20 p/s, halve the value used with the 10 p/s frequency.

Switch SWQ Format max 2 digits (00 : 99) Function Number of redials

Switch SWR Format max 3 digits (000 : 999) Function Time between redials (in seconds) (000 = no redials)

n
XEROX DFC165 & DWC165c Service Manual 4-17.

5. DIAGNOSTICS

5.1 SELF-DIAGNOSTICS
The facsimile machine automatically runs a diagnostic program (SELF-DIAGNOSTIC TEST) the first time it is powered on and on reactivation after a power failure or disconnection from the mains: if the self-diagnostic test is passed, the facsimile machine enters standby mode if the self-diagnostic test is failed as a result of a correctable error, the facsimile machine displays an error code on the display. If this occurs, you must always replace the motherboard, unless a keyboard error occurs (in this case you must replace the console board or the flat cable that connects it to the motherboard).

The self-diagnostic routine tests the following components: · EPROM · keyboard · printer. The self-diagnostic test stops at the first test in which a fault is detected.

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5.1.1 Description of the Self-Diagnostic Program
Diagnostic step Error message

1) The facsimile machine is powered on: the error LED lights up. 2) The EPROM is tested.
SYSTEM ERROR 93

3) The keyboard RAM is tested.

SYSTEM ERROR 06

4) The keyboard EPROM is tested.

SYSTEM ERROR 07

5) The display is tested.

SYSTEM ERROR 08

6) Communication between the keyboard and motherboard is tested. 7) Printer startup: check that the print carriage is reset. 8) The paper edge sensor is tested. 9) The position of the print carriage is tested. 10) The facsimile machine enters stand-by mode: the error LED gets off.

SYSTEM ERROR 09

SYSTEM ERROR 03

(*)

SYSTEM ERROR 04

SYSTEM ERROR 05

AUTOMATIC RX 09-05-95 14:58

(*) This error also occurs if the print head is mounted the wrong way round, that is, with the contacts facing the rear; consequently, start by checking that the print head is positioned correctly.
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5.2 ERROR CODES
The error codes are printed on the journals (see section 5.3). The format of these error codes, excluding those referring to the self-diagnostic test (described in section 5.1.1), may be: - one group of two digits ( xx) - two groups of two digits separated by a dot ( xx.xx); this extended format: · indicates the category to which the error belongs, by means of the first group,: 01 02 03 04 05 07 08 10 11 13 16 Document incorrectly positioned Unable to connect No answer from correspondent Failed transmission Incomplete transmission Document too long Document jam Failed or incomplete reception No reception due to memory full Failed polling reception Power failure

·provides more detailed information about the error, by means of the second group, and may be requested by the technician with the machine in "service" mode (see section 3.2.2), by setting bit 0 of switch SW09 to 1 (see section 4.1). In the tables that follow, the error codes are indicated in their extended format and in ascending numeric order. For an explanation of the meaning of the protocol signal codes that appear in the description of the causes of errors, see the next section (5.2.1).

Important:

to ensure correct identification of the cause of the error, we recommend you always print the communication protocol (PROTOCOL DUMP, see section 5.2.3).

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5.2.1 Meaning of Protocol Signal Codes
Code CRP CED CIG CSI DIS NSC NSF NSS TCF TSI DTC Name Command Repeat Called (Station Identification) Calling (Subscriber Identification) Called asubscriber Identification Digital Identification Signal Non-Standard Command Non-Standard Facilities Non-Standard Set-up Training Check Frame Transmitting Subscriber Identification Digital Transmit Command POLLING COMMANDS TRANSMISSION COMMANDS PRE-MESSAGE ANSWERS INITIAL IDENTIFICATION Type of signal GENERIC

DCS

Digital Command Signal

CFR FTT CTC EOM EOP EOR MPS PPS

Confirmation To Receive Failure To Train Continue To Correct End-of-Message End-of-Procedure End-of-Retransmission Multipage Signal Partial Page signal

POST-MESSAGE COMMANDS

>>
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PRI RR CTR ERR MCF PIN PIP PPR RNR RTN RTP DCN

Procedure Interrupt Receive Ready Response to CTC Response to EOR Message Confirmation Procedure Interrupt Negative Procedure Interrupt Positive Partial Page Request Receive Not ready Retrain Negative Retrain Positive Disconnect DISCONNECTION POST-MESSAGE ANSWERS

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5.2.2 Meaning of Error Codes
Code 02.00 03.00 04.00 Cause of Error Unable to connect No answer from correspondent No connection due to disconnected correspondent (DCN received) No connection due to incompatible correspondent (during handshake phase)