Ricoh FAX2500L SPECIFICATIONS 3000

FAX3000L

SERVICE MANUAL

WARNING

DANGER

INVISIBLE LASER RADIATION
WHEN OPEN AVOID DIRECT

EXPOSURE TO BEAM

DANGER

RAYON LASER INVISIBLE

LORS DE L’OUVERTURE

EVITER L’EXPOSITION DIRECTE

VORSICHT

Unsichtbare Laserstrahlung

unter dieser Abdeckung. Nicht

in den laserstrahl blicken.

PELIGRO

RADIACION LASER INVISIBLE

AL ABRIR. EVITAR LA

EXPOSICION DIRECTA AL HAZ

THIS MACHINE CONTAINS A LASER BEAM GENERATOR. LASER

BEAMS CAN CAUSE PERMANENT EYE DAMAGE. DO NOT OPEN

THE LASER UNIT OR LOOK ALONG THE LASER BEAM PATH

WHILE THE MAIN POWER IS ON.

Lithium Batteries (Memory Back-up)
CAUTION:

The danger of explosion exists if a battery of this type is incorrectly replace d.
Replace only with the same or an eq uiva lent type recommended by the
manufacturer. Discard used batteries in accordance with the manu fa ctu rer’s
instructions.

OVERALL MACHINE INFORMATION November 30th, 1991
SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1. SPECIFICATIONS

Type

Desktop transceiver

Circuit

PSTN, PABX

Connection

Direct couple

Document Size
Length: 105 - 1200 mm

[4.1 - 47.2 ins]
Up to 100 m [328 ft] after adjustment
Width: 148 - 304 mm

[5.8 - 12.0 ins]
Thickness: 0.05 to 0.2 mm

[2 to 8 mils]

Document Feed

Automatic feed, face down

ADF Capacity

50 sheets (using 80 g/m

Scanning Method

Flat bed, with CCD

Maximum Scan Width

256 mm [10.1 ins] ± 1%

Scan Resolution
Main scan: 8 dots/mm [203 dpi]
Sub scan:

Standard - 3.85 lines/mm [98 lpi]
Detail - 7.7 lines/mm [196 lpi]
Fine - 15.4 lines/mm [392 lpi]

Memory Capacity
ECM: 128 kbytes (double buffer)
SAF: 256 kbytes (14 pages), with

optional extra 1 Mbyte or 2 Mbytes
(max 71 or 128 pages respectively)

Compression

MH, MR, EFC, MMR, SSC
Storage to SAF memory for tx: MH
MMR only with ECM

Modulation

V.29 (QAM), V.27ter (PHM), V.21 (FM)

Protocol

Group 3 with ECM

2

paper)

1

Data Rate

9600/7200/4800/2400 bps; automatic fall­back

I/O Rate

With ECM: 0 ms/line
Without ECM: 5, 10, 20, or 40 ms/line

Transmission Time

10 s at 9600 bps (G3 ECM using memory)
for a CCITT #1 test document (Slerexe let­ter) using standard resolution

Printing System

Laser printing, using the Ricoh CS (Compact
Seamless) Engine, plain paper, dry toner

Paper Size
Standard Cassette

Europe: A4, A5
Asia: A4, A5, F, F4

Lower Cassette

Europe: A4, A5
Asia: A4, A5, F, F4, B4

Maximum Printout Width

210 mm [8.3 ins]

Maximum Printer Resolution
Main scan: 16 dots per mm [406 dpi]
Sub scan: 15.4 lines/mm [392 lpi]

Power Supply

220 - 240 Vac, 50 Hz

Power Consumption (Base Machine Only)
Standby: 35 W
Transmit: 50 W
Receive: 200 W
Copying: 270 W

Operating Environment
Temperature: 17 - 28 °C [63 - 82 °F]
Humidity: 40 - 70 %Rh

Dimensions (W x D x H)

496 x 459 x 293 mm [19.5 x 18.1 x 11.5 ins]
Excluding handset, trays, and optional units

Weight

19 kg [41.8 lbs]
Excluding handset, trays, and optional units

1-1

November 30th, 1991 OVERALL MACHINE INFORMATION

FEATURES

1.2. FEATURES

KEY: O = Used, X = Not Used,

A = With optional memory only,
B = With lower cassette only,
G = Not used in Germany,
S = Service mode in some countries

Equipment

ADF O
Bar code reader X
Built-in handset X
Cabinet X
Connection for ans. machine X
Connection for handset O
Cutter X
Handset (option only in Europe) O
Hard disk X
Magnetic card reader X
Manual feed mechanism O
Marker O
Microphone X
Monitor speaker O
Remaining memory indicator O
Speakerphone X

Video Processing Features

Contrast O
Halftone (Basic & Error Diffusion) O
MTF O
Reduction O
Resolution O
Smoothing to 16 x 15.4 l/mm O

Communication Features - Auto

Automatic fallback O
Automatic redialling O
Confidential reception A
Dual Access O
Substitute reception O
Transmission Reserve X

Communication Features -

User Selectable

Action as a transfer broadcaster X
AI Redial O
Alternative Destination O
Answering machine X
Authorized Reception O
Auto-answer delay time X
Auto dialling (pulse or DTMF) O
Auto Document O
Automatic Voice Message X
Auto-note X
Batch Transmission (max 5 files) A
Broadcasting O
Chain Dialling O
Confidential ID Override O
Confidential Transmission O
Forwarding (4 stations) A
Free Polling O
Groups (7 groups) O
Hold X
Immediate Redialling O
Immediate transmission O
Keystroke Programs O
Mailbox X
Memory transmission (this is the

default mode)
Notify X
On Hook Dial O (G)
Page Count O
Personal Codes O
Personal Codes with Conf ID O
Polling Reception O
Polling Transmission O
Quick Dial (32 stations) O
Reception modes (Fax, Tel,
Reduction O
Remote control features X
Remote Transfer X
Restricted Access (10 codes,

without cards)
Secured Polling O
Secured Polling with Stored ID

Override
Send Later O

Auto) O

O

O

O

1-2

OVERALL MACHINE INFORMATION November 30th, 1991
FEATURES

Communication Features -

User Selectable

Silent ringing detection X
Speed Dial (100 stations) O
Telephone Directory O
Tonal Signal Transmission O
Transfer Request O
Transmission Deadline X
Turnaround Polling X
Voice Request (immed. tx only) O

Communication Features -

Service Selectable

AI Short Protocol X
Auto-reduction override option O
Busy tone detection O
Closed Network (tx and rx) O
Continuous Polling Reception O
Dedicated tx parameters O
ECM O
EFC O
MV1200 compatibility X
Page retransmission O
Page separation mark O
Polling tx file lifetime in the SAF O
Protection against wrong conn. O
Resol’n stepdown override option X
Short Preamble O
Well log O

Other User Features

Auto Service Call O
Center mark O
Chequered mark X
Clearing a memory file O
Clearing a polling file O
Clock O
Confidential ID O
Copy mode O
Counters O
Dialled number check X
Direct entry of names O
Function Programs O
ID Code O
Label Insertion O
Language Selection O
LCD contrast control Service

Memory Lock A
Memory Lock ID A
Modifying a memory file X
Multi Sort Document Reception A
Multicopy mode A
Night Timer O
Own telephone number O
Printing a memory file O
RDS on/off O
Reception Mode Switching Timer X
Reception Time (non-memory rx

only)
Remote ID X
Reverse Order Printing A
RTI, TTI, CSI O (S)
Speaker volume control O
Specified Cassette Selection B
Substitute reception on/off O
Telephone line type O (S)
TTI on/off O
User Function Keys X
User Parameters O
Wild Cards O

Reports - Automat ic

Charge Control Report X
Communication Failure Report O
Confidential File Report O
Error Report O
Memory Storage Report O
Mode Change Report X
Polling Clear Report O
Polling Reserve Report O
Polling Result Report O
Power Failure Report O
Journal O
Transfer Result Report X
Transmission Result Report O

Reports - User-initiated

Authorized Reception List O
Charge Control Report X
File List O
Forwarding List A
Group List O
Personal Code List O
Program List O

O

1

1-3

November 30th, 1991 OVERALL MACHINE INFORMATION

FEATURES

Reports - User-initiated

Quick Dial List O
Specified Cassette Selection List B
Speed Dial List O
Journal O
Transmission Status Report X
User Function List X
User Parameter List O

Service Mode Features

Back-to-back test O
Bit switch programming O
Buzzer test O
Cable equalizer (rx only) O
Comm. parameter display O
DTMF tone test O
Echo countermeasure O
Error code display O
LCD contrast adjustment O
Memory file forwarding O
Memory file printout (all files) O
Modem test O
NCU parameters O
Operation panel test O
Printer mechanism test X
Printer test patterns O
Programmable attenuation X
Protocol dump list O
RAM display/rewrite O
RAM dump O
Ringer test X
Scanner lamp test O
Scanner mechanism test O
Sensor initialization X
Serial number O
Service monitor report O
Service station number O
System parameter list O
Technical data on the Journal O
Thermal head parameters X
Transmission Status Report X

Memory Files

Max. number of files: 100
Max. number of stations/ file : 14 2
Max. number of stations ove rall: 299
Max. number of pages overall: 200
(including pages stored as A uto
Documents)

1-4

OVERALL MACHINE INFORMATION November 30th, 1991
COMPONENT LAYOUT

1.3. COMPONENT LAY OUT

1.3.1. Mechanical Components

45

14

15

16
17

18

19

20
21
22
23

13

12

11

10

6789

1

2

3

1

32

31

24

25

26

27

1. R2 Rollers Feed the document through the scanner.

2. Exposure Glass Exposes the original to light from the xenon lamp.

3. R1 Rollers Feed the document through the scanner.

4. Separation Roller Allows one page into the scanner.

5. Document Feed Roller Feeds the document into the scanner.

6. Pick-up Roller Picks up pages of the document from the document
table.

7. Toner Cartridge This supplies toner to the development unit. It is part of
the CTM (Cleaning/Toner Magazine).

8. Charge Corona Unit This applies a charge to the master at the start of the
print cycle.

9. Quenching Lamp This removes excess charge from the master at the end
of the print cycle.

10. Thermistor This measures the temperature in the fusing unit.

11. Hot Roller Heat from this roller fuses the toner to the copy paper.

28

29

30

1-5

November 30th, 1991 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

12. Hot Roller Strippers These take the paper off the hot roller after fusing.

13. Copy Feed-out Rollers These feed the paper out of the printer.

14. Pressure Roller (Fusing) This applies pressure to the paper during the fusing
process.

15. Cleaning Unit/Used Toner

Tank

16. Transfer Corona Unit This applies a charge to the paper to pull the toner off

17. Master Belt Also known as the CS (Compact Seamless) Engine.

18. Registration Roller This carries out the registration process.

19. Registration Sensor This detects when paper is approaching the registration

20. Development Roller This roller applies toner to the latent image on the

21. Toner Supply Bar This feeds toner to the development roller.

22. Toner Mixing Bar This stirs up the toner in the development unit, so that it

23. Upper Relay Rollers These feed paper from the upper cassette into the

24. Lower Relay Rollers These feed paper from the lower cassette into the

25. Lower Paper Feed Roller This feeds paper out of the lower cassette.

26. Lower Paper Separation

Roller

27. Lower Paper Pick-up

Roller

28. Upper Paper Feed Rollers These pick up the top sheet of paper from the stack in

29. Focusing Lens This focuses the laser beam onto the master belt.

30.

Fθ Lenses

31. Hexagonal Mirror This passes the laser beam across the master belt.

32. CCD (Charge Coupled

Device)

This removes excess toner from the master after image
transfer and stores it. It is part of the CTM
(Cleaning/Toner Magazine).

the master and onto the copy paper.

The latent image is written to this organic
photoconductor belt.

roller.

master belt.

does not collect into lumps.

printer.

printer.

This ensures that only one sheet of paper at a time
leaves the lower cassette.

This picks up the top sheet of paper from the stack in
the lower cassette and passes it to the feed roller.

the upper cassette and feed it into the printer.

These ensure that the thickness of the laser beam is
uniform across the main scan.

This converts the light reflected from the document into
an analog video signal.

1-6

567

13

14

15

OVERALL MACHINE INFORMATION November 30th, 1991
COMPONENT LAYOUT

1.3.2. Drive Components

18

2

1

3

4

8

1

9

17

16

19

12

20

10

11

1-7

November 30th, 1991 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

1. Tx Motor This stepper motor drives the scanner.

2. R2 Roller This feeds the original through the scanner.

3. Toner Supply Motor This dc motor drives the toner supply mechanism.

4. R1 Roller This feeds the original through the scanner.

5. Shutter Drive Gear This ensures that the shutter moves out of the
document feed path at the correct time.

6. Toner Supply Gear (CTM) This ensures the supply of toner from the CTM into the
development unit. It is part of the CTM.

7. Cleaning Brush Drive Gear This drives the cleaning brush in the CTM.

8. Hot Roller This fuses the toner to the copy paper.

9. Copy Feed-out Roller This feeds printouts out of the machine.

10. Pressure Roller This applies pressure to the copy paper in the fusing
unit.

11. Registration Roller Drive

Gear

12. Upper Paper Feed Motor This drives the paper feed mechanism in the upper

13. Development Roller Drive

Gear

14. Upper Paper Feed Roller

Drive Gear

15. Master Belt Drive Gear This drives the master belt.

16. Paper Feed Clutch This transfers drive from the upper paper feed motor to

17. Toner Supply Gear

(Development)

18. Main Motor This brushless dc motor drives the master belt, fusing

19. Lower Paper Feed Motor This drives the paper feed mechanism in the lower

20. Lower Paper Feed Clutch This transfers drive from the lower paper feed motor to

This drives the registration roller.

cassette.
This drives the development roller.

This drives the upper paper feed roller.

the upper paper feed mechanism.
This ensures the collection of toner from the CTM, and

its distribution across the full length of the development
unit.

unit, development unit, and cleaning unit.

cassette.

the lower paper feed mechanism.

1-8

16

24

9

12

OVERALL MACHINE INFORMATION November 30th, 1991
COMPONENT LAYOUT

1.3.3. Electrical Components

11

10

13

8

1

2

3

4

5

6

7

1

34

33

32

37

35

36

31

30

29

28

27

26

14

14

15

15

25

17

18

19

20

21

22

23

1-9

November 30th, 1991 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

Lower Cassette

44

43

42

Name Description No.

PCBs

FCU This board controls the machine. 11
MBU This board contains the system ROM and RAM for storing

system parameters such as bit switch settings and programmed

telephone numbers.
SBU This board contains the CCD. 1
OP-PORT This board controls the operation panel. 37
NCU This board contains relays and switches for interfacing the

machine to the network and the handset.
PSU This board supplies power to the machine. 3
LD Unit This board drives the laser diode. 10
PFU This board controls the lower paper feed unit. 44

MOTORS

Tx Motor This stepper motor drives the scanner. 34
Main Motor This dc motor drives the fusing unit, master belt, development

roller, and cleaning unit.
Upper Paper

Feed Motor
Lower Paper

Feed Motor
Toner Supply Mo-

tor
Hexagonal Mirror

Motor
Ozone Fan This removes ozone-laden air from the vicinity of the master

This stepper motor drives the upper paper feed mechanism and

the registration roller.

This stepper motor drives the lower paper feed mechanism. 43

This dc motor drives the toner supply mechanism. 33

This high-speed dc motor drives the hexagonal mirror in the

laser printer optics.

unit, and filters out the ozone.

38

39

40

41

12

32

30

26

13

5

1-10

OVERALL MACHINE INFORMATION November 30th, 1991
COMPONENT LAYOUT

Name Description No.

CLUTCHES

Upper Paper
Feed Clutch

Lower Paper
Feed Clutch

SENSORS

Document Sensor This detects the presence of a document in the feeder. 36
Scan Line Sensor This detects when a page is approaching the auto shading

Document Width
Sensor

Toner Near-end
Sensor

Upper Paper
Size Detector

Upper Paper End
Sensor

Registration Sen­sor

Paper Feed-out
Sensor

Front Cover
Switch

CTM Sensor This detects when a CTM has been installed in the machine. 27
Lower Paper

Size Detector
Lower Paper End

Sensor
Lower Paper

Feed Sensor

INTERLOCK SWITCHES

Front Cover Inter­lock Switches

OTHERS

Speaker This allows the user to listen to the condition of the telephone

Xenon Lamp This lamp illuminates the document. 35
Xenon Lamp

Driver
Charge Corona

and Quenching
Lamp Unit

Transfer Corona
Unit

Varistor This ensures that the charge given to the master by the charge

Marker This stamps a red circle on each page that is successfully fed

This transfers drive from the upper paper feed motor to the

paper feed roller in the upper cassette.

This transfers drive from the lower paper feed motor to the

paper feed roller in the lower cassette.

position.

This detects when a B4-width [10.1"] document has been

placed in the feeder.

This detects when the toner has almost run out. 17

This detects the paper size installed in the upper cassette. The

user must install the correct actuator.

This detects when the paper in the upper cassette has run out. 29

This detects when paper has arrived at the registration rollers. 21

This detects when the paper has been fed out of the printer. 24

This detects whether the front cover is open or closed. 23

This detects the paper size installed in the lower cassette. The

user must install the correct actuator.

This detects when the paper in the lower cassette has run out. 38

This sensor detects the presence of paper at the lower paper

feed roller.

If the front cover is open, these interlock switches interrupt the

+5VLD power supply for the laser diode and the +24VD power

supply for the power pack, motors, and other components.

line.

This drives the xenon lamp. 2

The charge corona unit charges the master belt at the start of

the print cycle. The quenching lamp removes excess charge

from the master belt at the end of the print cycle.

This pulls the toner off the master and onto the copy paper. 7

corona wire does not exceed -750 Volts.

through the scanner.

28

42

14

16

25

41

39

19,
20

31

18

9

15

1

1-11

November 30th, 1991 OVERALL MACHINE INFORMATION

COMPONENT LAYOUT

Name Description No.

Power Pack This supplies high voltages to the corona wires and the

development bias terminal.
Fusing Lamp This fuses the toner to the paper. 6
Thermistor This monitors the temperature inside the fusing unit. 8
Thermostat This interrupts the ac power supply to the fusing lamp if the

temperature exceeds 400 °C.
Lower Cassette

Indicator Panel

This contains indicators to show the status of the lower cassette. 40

22

4

1-12

OVERALL MACHINE INFORMATION November 30th, 1991
OVERALL MACHINE CONTROL

1.4. OVERALL MACHINE CONTROL

SBU

(CCD)

Scanner
Sensors

Operation

Panel

NCU

CONTROL SIGNALS

Video Processing

Memory

Video

Processor

HandsetLine

Speaker

Modem AFE

CPU

PSU

Port

1

Scanner and Printer Drive

Components and Sensors

FCU

I/O

RS-232C

Interface

DATA AND ADDRESS BUS

ECM

Memory

MBU

Laser

Interface

RAMROM

Laser Diode Driver
Main Scan Start Detector
Interlock Switch

Page

Memory

SAF

Memory

The cpu on the FCU board controls the machine, as shown in the above
drawing.

There is no modem board in the machine. The cpu performs the digital func­tions of a modem and carries out digital to analog conversion of facsimile
data. There is a separa te an alog modem chip, called the Modem AFE, wh ich
does the rest of the modem operations.

1-13

November 30th, 1991 OVERALL MACHINE INFORMATION

VIDEO DATA PATH

1.5. VIDEO DATA PATH

1.5.1. Transmission

Original

Reference:
Group 3
Facsimile
Manual,
section
1-3-1

Xenon

Lamp

ECM

Memory

Line

Buffer

SAF

Memory

RAM

MBU

FIFO

Video

Processor

The following diagrams show
the data path for this mod el.

CCD

Analog Signal

CPU

Modem
(Digital)

MODEM

AFE

FCU

Modem

(Analog)

To the

Network

(via the NCU)

1.5.2. Reception

From the

Network

(via the NCU)

Reference:
Group 3
Facsimile
Manual,
section
1-3-2

Line

Buffer

RAM

MBU

FCU

Memory

SAF

FIFO

Filter

HYBRID IC

Memory

ECM

Page

Memory

Laser Diode

Modem

(Analog)

Modem
(Digital)

CPU

MODEM

AFE

Laser

Interface

Laser Diode

Driver

1-14

Copy Paper

OVERALL MACHINE INFORMATION November 30th, 1991
POWER DISTRIBUTION

1.6. POWER DISTRI BUTI O N

1.6.1. Distribution Diagram

AC Main

PSU

Power

AC Switching

Circuit

Fusing

Lamp

+24V

-12V

+24VS

+24VD

Scanner
Sensors

+5V

Operation

Panel

+5V

+24VD

Lower Paper Feed Motor
Lower Paper Feed Clutch

+24VD

PFU

+5V

+24VD

+5V

NCU

+5V
+24VS

FCU

Regulator

- 5V

- 12V
+12V

Regulator

+24VS

1

Sensors and

Indicators

FUSING UNIT

Thermistor

+5V

+5V

MBU

SAF Memory

+5V

SBU

+12V

+5V

+5V

Front Cover

Interlock Switch

Front Cover

Microswitch

+5V

+5V

+5VLD

+5VLD

LDDR

Laser Diode

+24VD

Motors, Clutches, Lamps,
Marker, Power Pack

The laser diode is powered by a special +5V supply, called +5VLD.
There are two +24V power supplies:

• +24VS: This is always on when the main switch is o n.

• +24VD: This is interrupte d if th e fro nt cover interlock switch opens.

There is no +24VD activation signa l from th e cpu to the PS U.

Printer

Sensors

RS-232C

Interface

1-15

November 30th, 1991 OVERALL MACHINE INFORMATION

POWER DISTRIBUTION

1.6.2. Memory Back-up Circuit

Reference:

Group 3
Facsimile
Manual, section
1-4-3, Circuit
type 1

+5V

Voltage

Detector

+24V

[A]

+5V

Switching

Circuit

Regulator

MBU

RAM

1-11

1-9

Battery

Switch

Battery

Switching

Circuit

FCU

17-11

17-9

Real Time

Clock

CPU

Memory
Monitor

SAF

Memory

Battery

Switch

[B]

Battery

The battery [A] on the MBU backs up the RA M on the MBU, which con ta ins
system parameters. It also backs up the rea l time clock in t he cpu . This bat­tery is not rechargeable. CN1-9 te lls the cpu whe th er back-up power (CN1-

11) comes from the battery or the +5V power supply.
A rechargeable battery [B ] on the FCU board backs up the SAF memo ry and

the real time clock for 1 hour. While the main power is on, the +24V supply re­charges the battery.

If there is data in the SAF memory, the rechargeable ba tt ery [B ] also backs
up the real time clock, to preserve the MBU battery.

1-16

[A]

DETAILED SECTION DESCRIPTIONS November 30th, 1991 SCANNER

2. DETAILED SECTION DESCRIPTIONS

2.1. SCANNER

2.1.1. Mechanisms

1. Document Detection

Document Table

Reference:

Group 3
Facsimile
Manual,
section 2-1-1.

2

• The scanner is B4-width [1 0. 1" ], with a B4 document width de te ctor [A].

The scanner can feed paper up to 304 mm [1 2"] wide. However, only

10.1" of this width will be scanned. The ext ra width allows users to feed
wide originals with wide margins, such as computer form printouts.

• The scanner contains a xenon lamp.

• There is a fold-down extension [B] to support long documents.

[B]

2-1

[A]

Reference:

Group 3
Facsimile
Manual,
section 2-1-1.

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

SCANNER

Shutter

[C]

[B]

In standby mode, tab [A] rests on cam [B] . Whe n the tx mot or starts, the mo­tor rotates forwards (white arrows), the cam lifts the tab, and the shut ter [C]
rises. After the last pa ge ha s be en fed through the scanner, the tx motor re­verses (black arrows), the cam drops back to the standb y posit ion, and the
shutter blocks the scan ne r p at h again.

2. Pick-up and Feed

Drive Mechanism

Reference:

Group 3
Facsimile
Manual,
section 2-2-1.

[A]

[B]

[C]

This machine has a Mechanical Clu tch Mecha nism. The tx motor [A] drives
the feed roller [B] and pick-up roller [C].

Resolution

Standard - The tx motor feeds the document at 7.7 lines/mm. The video processor executes

OR processing to convert the data into 3.85 lines/mm.
Detail - The tx motor feeds the document at 7.7 lines/mm. There is no OR processing, and
the data is transmitted at 7.7 lines/mm.
Fine - The tx motor feeds the document and transmits data at 15.4 lines/mm. If the other ter­minal cannot receive at this resolution, alternate lines of data are deleted, so the effective
resolution of the transmitted data is 7.7 lines/mm.

2-2

DETAILED SECTION DESCRIPTIONS November 30th, 1991
SCANNER

Jam Conditions

The cpu detects a document jam if one of the following cond itions occurs.

• The scan line sensor does no t switch on with in 9 s of the Start key be-

ing pressed.

• The scan line sensor does no t tu rn off after the maximum document

length has been fe d since it turned on.

• The scan line sensor switch es on wh ile th e do cument sensor is off.

• The document width sensor switches on while the document sen sor is

off.

• The scan line sensor does no t tu rn on wit hin 5 s of the end of sta mpin g,

if the document senso r is on.

Separation

Reference: Group 3 Facsimile Manual, section 2-2-2.

2

3. Manual Feed

The manual feed butt on [A] lif ts th e separation roller [B] out of the document
feed path. There is no manual fe ed switch.

Reference: Group 3 Facsimile Manual, section 2-2-3.

[B]

[A]

2-3

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

SCANNER

2.1.2. Video Data Proces si ng

Output from the CCD

A

Auto Shading

Memory

WHITE

WAVEFORM

FEEDBACK

Reference:

Group 3
Facsimile
Manual,
section 2-3

DC

Filter

VIDEO

PROCESSOR

Corrected Data from the Auto Shading Circuit

Amplifier

Gamma

Correction,

MTF

A/D

Converter

Data Processing

Circuits

Halftone

Process

Edge

Detection

To the CPU

and Modem

Basic

EDGE

ELEMENTS

Peak
Hold

CORRECTED

DATA

Error
Diffusion
Halftone

Process

Comparator

Background

Detection

OR

Processing

Reduction

A

NON-EDGE

ELEMENTS

Reduction

Halftone

B

Process Selector

To CPU and Modem

2-4

Image/Text

Detection

B’

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

2.2. PRINTER

2.2.1. Mechanisms

1. Master Unit

This printer uses a "write to black" syste m, usin g ne ga tive ton er.
The master unit contains a durable OPC master belt. The expe cte d lif et ime o f

each master unit is about 60 ,000 copies (this is the target value). Because of
this long lifetime, the user is not exp ect ed to cha nge th e mast er; the re is no
Replace Master indicator.

The master belt does not have a bond seam, so no mast er ho me position de­tection is needed. There is also no ma ste r unit in terlock switch; there is an in­terlock switch on the front cover.

[A]

2

[B]

The main motor [A] drives the master belt [B].

• At the start of printing , it turns on briefly and the master belt moves un -

der the quenching lamp to ensure that it is fully discharged.

• Then, when the fu sing la mp is at th e correct temperature and the page

memory contains a complete page of da ta, and the hexagonal mirror
motor is running at the correct speed , the main mo tor swit che s on again.

• When the main motor is runn ing at th e correct speed, the laser diode

turns on for automatic power control.

Reference: Group 3 Facsimile Manual, section 4-1

2-5

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

2. Charge Corona Unit

[A]

[C]

[B]

[D]

[E]

The charge corona un it [A ] gives a -750 V charge to the ma ster belt. The
varistor [B] ensures th at the charge does not exceed this valu e.

The connection between the powe r p ack [C] and the coron a unit is n ot bro­ken when the front cover is o pene d. Ho weve r, the front cover interlock swit ch
cuts the +24V power line to the power pack if the cover is o pene d.

The charge corona un it con tains a wire cleaner [D].
The charge corona switch es on at th e same time as the laser diode starts its

power control procedure.
There is one ozone fan on the right hand side of the machine. It sucks air out

of the machine thro ugh the ozone filter, which is part of the ozone fan assem­bly. The ozone fan switches on when a ringing signal is detecte d, an d st ays
on until the fusing lamp te mperature falls back below 130 °C at the end of the
printing run.

The inset shows how the grid plate [E] connects to the varistor.

Reference: Group 3 Facsimile Manual, section 4-2

2-6

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

3. Laser Optics

[E]

[F]

[B]

[D]

[A]

[C]

2

The optics are the same as those illu stra ted in section 4-3-3 of the Group 3
Facsimile Manual, except that th ere are two mirrors [A] at the "Second Mirro r"
position.

Other points to note are as follows:

• The focusing lens [B] is a barrel toroidal lens.

• The shield glass [C] preven ts toner from entering the laser optics are a,

and may need cleaning occasionally.

• An optical fibre [D] passes the ref lected laser beam to the main scan

start detector [E]. This detector is situat ed on the laser d iod e drive b oa rd
[F], unlike shown in the diagram.

• The strength of th e beam is 0 .4 36 mW at a wavelength of 780 nm.

• The dimensions of the dot on th e mast er be lt are 65 µm (main scan di-

rection) by 75 µm (sub-scan direction).

The charge on the exposed parts of the belt drop s to abou t -15 0 V, while non­exposed areas remain at abou t -750 V.

The laser engine characte ristics are as follows (refer to page 4-3-21 of the
Group 3 Facsimile manual for backg rou nd ).

• Motor speed: 9,240 rpm

• Motor type: Hexagonal

• LD clock frequency: 5.3311 MHz

• Time betwee n main scan synchronization signa ls: 1. 08 2 ms

• Number of dots pe r ma in scan: 5769

2-7

[A]

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

4. Development

Overview

This machine uses a ’write-to-b lack’ development system using negative
toner.

The toner cassette is part of a dispo sable unit known as the CTM (Clean­ing/Toner Magazine). The CTM contains a toner cassette, toner supply
mechanism, cleaning unit , an d used to ner t ank. When the toner is all used
up, the CTM is replaced.

Reference: Group 3 facsimile Manual, section 4-4

Toner Supply

[B]

[C]

[D]

[E]

When a new CTM is installed in the machine and the front cover is closed,
the main motor and to ne r su pp ly mo to r t urn on. When the front cover is
closed, a tab [A] o n the fusing unit cover forces the hopper [B] t o ope n. Also,
tab [C] on the CTM pushes bracket [D], which mo ves th e CTM sensor actua­tor into the sensor.

Continued on the next page

2-8

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

[F]

[H]

[I] [J]

The toner supply motor [F] drive s the ton er sup ply sha ft ([E] in the diagram
on the previous page). This spiral shaft feeds toner to the ho pper.

Inside the development unit is another spiral shaft [G]. This shaft, d riven by
the main motor, distributes toner across the length of trough [H]. The toner
supply motor drives gear [I], and once every rot at ion , it tips the trough upside
down, dropping t he toner into the develo pment unit. A sprin g immediately
pulls the trough back upright so that it can cont inu e to receive ton er.

[G]

[K]

2

The toner mixing bar [J], driven by the main motor, keeps the toner agitated
as it builds up at the botto m of th e de velopment unit. The toner supply bar [K]
supplies toner to the de velo pment roller.

While toner is being supplied, th e main motor is also operating the toner near­end detection mecha nism. When a fresh toner cassett e is installed, the sen­sor detects toner near-end, because there is not much ton e r in th e
development unit. Wh en some to ne r has be en transferred, the signal from
the toner near-end senso r ret urns to normal. About 22 s aft er t ha t, th e ton er
supply motor stops and no more toner is transferred into the development
unit.

During printing, if toner near-en d is detect ed , the tone r supply mechanism will
start up again. Toner will be supplied until t he sensor signal returns to normal.
If the toner cassette in the CTM is empty, no toner will be transferred, and th e
sensor signal will not return to normal. If the sen sor ou tp ut s the nea r-en d sig­nal for more than 5 minu te s, t he cpu blinks the Add Ton er indicator. See
"Toner Near-end Detection" for more details.

2-9

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Development Unit Drive

[A]

[B]

During printing, drive from th e main moto r at gear [A] drives the development
roller [B]. The main moto r a lso drive s the master belt, so the developme nt
roller and the master belt always move at the same time; there fo re, no devel­opment clutch is needed.

Toner Near-end Detection

The toner near-end de te ction mechanism is exactly the same as described in
section 4-4-4 of the Grou p 3 Facsimile Manu al. The sensor signal is as
shown in the following diagram.

Reference:

Group 3
Facsimile
Manual,
section 4-4-4.

1.9 s

0.1 ms

The cpu starts to blink the Add Toner indicator under the follo wing conditions:

• At power up: If the sensor ou tp ut indicates toner near-e nd for 6 s

• During printing: If the senso r o ut pu t ind icates toner near-end fo r more

than 5 minutes, totalled over consecutive print runs (when the motor
stops, the sensor mechanism is deactivated, so time between printing
runs does not count towards the 5 minute time limit)

After 100 more pages ha ve b een p rint ed , t he Ad d Toner indicator remains lit,
and printing is disabled until a new CTM has bee n added.

2-10

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

Development Bias

[B]

[A]

2

The development bias and switch ing bias are supp lied from th e po wer pa ck
[A] at the same terminal [B].

• Development bias: - 530 ± 20 Vdc (BIASL)

• Switching bias: +70 ± 20 Vdc (BIASH)

The switching bias is used at the following times:

• Between pages of a prin t run , while the development bia s is off

• While toner is being transfe rred from the CTM to the development unit

2-11

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

5. Paper Feed

There are two cassette s, a 25 0-sh ee t cassette, and an optional 500-sheet
cassette.

The sizes of paper that the cassettes can take are listed in the specifications
(section 1-1).

[A]

Paper feeds from the rear towards the front . The lower paper feed path
bends upward through the front part of the upper cassette. The two paper
feed paths merge just before the registratio n rolle r [A] .

2-12

[B]

[B]

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

Paper Lift

Standard Cassette

[C]

[A]

A mechanical paper lift mecha nism is used. When the user places the cas­sette into the machine, a pin [A] in the base of the cassette act ivates a spring
loaded lever mechanism [B], which force s up th e pa per lif t arm [C] until t he
top of the stack touches the paper height positioner.

Lower Cassette

[A]

[C]

[E]

2

[D]

A mechanical paper lift mecha nism is used. When the user places the cas­sette into the machine, a tab [A] on the rear of the cassette push es a plate [B]
towards the rear of th e machine as the user slides in the ca ssette. This plate,
driven by a spring [C], forces up the pa per lif t arm [D] . Th e p ap er h eig ht posi­tioner [E] ensures tha t the paper is not pushed up too far.

Reference: Group 3 Facsimile Manual, section 4-5-2.

2-13

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Pick-up and Feed Mechanism

Standard Cassette (Clutch Driven Single Roller Mechanism)

Reference:

Group 3
Facsimile
Manual,
section 4-5-3.

[B]

[D]

[G]

[C]

[A]

[E] [F]

The upper paper feed moto r [ A] drives th e pick-up and feed mechanism. The
paper feed clutch [B] transfers drive fro m this motor to the feed rollers [C].

When the paper feed clutch turns on, a metal plate [D] moves away from
gear [E]. A pin [F] on this plate releases the gear, and the paper feed roller
turns. However, the clutch switches off after only 0.3 s, and a spring forces
the plate back to th e starting position. After one revolutio n, the rib [G] on the
inside of the gear comes aga inst the pin, and the paper feed roller stops.

When the page memory is full, the upper paper f ee d moto r tu rns on. At th e
beginning, it rotates at a slower speed (202.5 pps) to avoid excessive start -up
noise and start-up current peak.

At 0.1 s after the main moto r re ach es the correct speed, the motor turns at a
higher speed (405 pps). This higher speed, used for pick-up and feed, en­sures that time is not wast ed getting paper into the printer. At the same time,
the upper paper feed clutch turns on and paper is fed into the printer.

Shortly after the registrat ion sensor turns on, the main motor has the lead ing
edge of the paper, so the upper paper feed motor rotates at 202.5 pps again
to match the feed speed of the main motor.

When the trailing edge of the paper has left the registratio n sen sor, the paper
is no longer affected by the upper paper fe ed mo tor. The upper p aper feed
motor goes back to 405 pps ready for feeding the next page.

2-14

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

Lower Cassette (Clutch Driven Two Roller Mechanism)

Reference:

Group 3
Facsimile
Manual,
section 4-5-3.

[A]

[C]

[D]

[E]

2

[B]

The lower paper feed motor [A] drives the lower paper feed mecha nism, and
the lower paper feed clutch [B] tra nsfers drive from the motor to the lower
pick-up [C] and feed [D] rollers at the correct time.

When the page memory is full, the lower paper feed mot or t urn s on. A t t he be ­ginning, it rotates at a slower spe ed (266 pps) to avoid excessive st art -up
noise and start-up cu rrent peak. After 0.1 s, the motor rotates at a higher
speed (800 pps). This higher speed of rota tion, used during pick-up and fe ed,
ensures that little time is wa ste d in ge tt ing paper out of the cassette and into
the printer.

When main motor lock is achieved, the lower paper feed clutch turn s on an d
paper is fed into the printer. Shortly after the paper feed sensor [E] is acti­vated, the clutch turns off.

After registration, the upper paper f eed and main moto rs turn on to drive the
registration rollers and feed the paper int o the printe r. However , rollers drive n
by the lower paper feed motor still hold the trailing edge of the paper. So the
lower paper feed motor rotates at 266 pps to match the feed spe ed of the up­per feed and main motors.

When the trailing edge of the paper has lef t the pa per f eed sen sor, the paper
is no longer affe cted by the lower paper feed motor. The lower paper fe ed mo­tor goes back to 800 pps ready for feeding the next page.

2-15

[B]

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Separation Mechanism

Standard Cassette
The standard cassette uses a semicircu lar rolle r a nd corner separator

method of separation.
Lower Cassette
This cassette uses a feed and reverse ro ller mech an ism.

Reference: Group 3 Facsimile Manual, section 4-5-4.

Registration

[C]

[D]

Reference:

Group 3
Facsimile
Manual,
section 4-5-5.

[A]

[E]

Standard Cassette
There is no registration. This is because the upper paper feed motor [A]

drives the registration roller [B] and the upper paper feed rollers [C], and
there is no registration clutch. This means tha t the re gist rat ion roller and the
paper feed rollers stop at exact ly the same time .

Just after the paper’s leading edge reach es th e reg istra tion sensor [D], the
upper paper feed motor stops brie fly.

Lower Cassette
The upper paper feed motor is off when the leading edge of the paper acti-

vates the registration senso r. The lower paper feed roller [E] con tinues to
feed the paper for a short while after this, so registra tio n is done in the normal
manner (see section 4-5-5 of the Grou p 3 Facsimile Manu al).

2-16

[A]

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

Jam Detection

The machine detects a jam if one of th e following conditions exists.

• The registration sensor or cop y fee d-o ut sensor is activated while the

machine is in standby mode.

• The registration sensor still detects pape r 9.0 s after t he paper fe ed

clutch turned on.

• The copy feed-out senso r still doe s not detect paper 9.0 s after the pa-

per feed clutch turned on.

• The copy feed-out sensor still detects the presence of paper 9.0 s after

it first detected the latest sheet of pape r.

• Standard Cassette Only: The reg istration sensor does not turn on within

2.0 s after the upper paper feed clu tch turned on.

• Lower Cassette Only: The lower paper feed senso r do es n ot turn on

within 1.2 s after the lowe r pap er feed clutch turned on.

There is no error detection during paper lift.

2

Paper Size Detection

Reference:

Group 3
Facsimile
Manual,
section 4-5-9.

[B]

For both cassettes, the pap er size actuator [A] is on the front of the cassette.
The paper size sensor [B] is a row of microswitches. The above diag ram
shows the upper paper size sen sor.

The cpu disables paper feed from a casset te if the paper size cannot be de­tected. If the paper size actua to r is missing or broke n, or if the re is no cas­sette in the cavity, the Add Paper ind icator will light.

2-17

Lower Cassette

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Paper End Detection

Upper Cassette

[A]

[B]

Reference: Group 3 Facsimile Manual, section 4-5-8.

[A]

[B]

In both cassettes, th e pa pe r e nd se nso r actuator [A] falls through a slot [B] in
the bottom of the tray.

There are no paper height sensors or pa per n ear-end sensors.

Page Separation and Data Reducti on

Incoming pages that are similar in lengt h to the copy pa per ma y be red uce d
in the sub-scan direction to fit on the paper. Whether or not this happens de­pends on the settings of bits 1 and 2 of bit switch 02 .

Reduction Enabled
If bit 2 of bit switch 02 is at 0, the data will be reduced in the page memory to

fit on the copy paper. However, data will only be redu ced if the leng th of th e
incoming page is between 5 mm shorter and a certain maximum length. This
maximum incoming page lengt h that can be reduced depends on the copy pa­per size and on the reduction ratio sto red in RAM addresses 2404F and

24050.
Each paper size can be progra mmed wit h a sep arate reduction ratio. In each

of the two RAM addresses, th ere is one bit for each p ossible paper size. The
combination of the bit sett ing s det ermines the ratio for that paper size.

Bit 7: Not used Bit 5: Legal Bit 3: A4 Bit 1: B5
Bit 6: B4 Bit 4: F4 Bit 2: Letter Bit 0: A5

The ratio is determined in accordan ce with the follo wing tab le.

Bit in 2404F 0: 3/2 1: 4/3 0: 8/7 1: 12/11
Bit in 24050 0 0 1 1

2-18

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

The following table shows the maximum incoming page length s that can be
reduced for each copy p aper size. All lengths are in millimetres. The facto ry
setting of the reduction ratio is 4/3.

Copy

Paper Type

A5 148 214.5 190.7 163.4 156
B5 182 265.5 236 202.3 193.1
Letter 279.4 341
A4 297 341
F4, F 330.2 341
Legal 355.6 341
B4 364 341

1

: The page memory cannot reduce incoming pages longer than 341 mm.

Copy Paper

Length

Maximum reducable incoming page lengths

Ratio = 3/2 Ratio = 4/3 Ratio = 8/7 Ratio = 12/11

1
1
1
1
1

341
341
341
341
341

1
1
1
1
1

313.6 299.3

1

341

341 1 341

341 1 341

341 1 341

318.5

1

1

1

The values are calculate d as follows.
Maximum incoming page lengt h that can be reduced =

(Copy Paper Length - 5) x Reduction Ratio

For example, for A 5 wit h a reduction ratio of 4/3

Max incoming data length = (148 - 5) x 4/3 = 1 90.7

Incoming pages that are longer than the maximum le ngth will not be reduced ,
but will be printed on two pages and treated in accord an ce with the sett ing of
bit 1 of bit switch 02. If this bit is 1, the bottom few lines of the page will be re­peated at the top of the next page. If this bit is 0, the next page will continue
from where the first page left off.

2

Reduction Disabled
If bit 2 of bit switch 02 is at 1, the data will not be reduced . Howe ver, if the in-

coming page is up to x mm longer than the copy pa pe r, the excess portion
will not be printed. The value of x can be from 0 to 15 mm. It is determined
by the setting of RAM addre ss 240 51 (copy mode: bits 3 to 0, receive mode:
bits 7 to 4; bits 3 and 7 are the most signif icant bits).

Hex value Value of x

0 0
1 1

and so on until

15 15

Messages more than x mm longer than the copy paper will be printed out on
two pages in accordance with the sett ing of bit 1 of bit switch 02 , as ex­plained above.

2-19

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Paper Size Sele ction

If there are two casset te s in the ma chin e, the paper size to use is decided in
accordance with a few simple rules.

• If both cassette s cont ain the same paper size, the lower ca sset te will be

used.

• If the received pag e has to be split up and printed on two pages, both

pages will be the same size.

• If the cassettes con tain differen t sizes, the paper size chosen for print-

ing the received fax message is selected in accordance with the follow­ing table of priorities. The table assume s that re du ctio n is e nabled and
that the reduction ratio is 4/3.

Paper Size
A5 Letter A4 F, F4 Legal B4

Recv’d
Fax
Mes­sage
Size

A5123456
Letter6(SR)12345
A4 6(SR) 2(R) 1 3 4 5
F, F4 6(SR) 5(R) 4(R) 1 2 3
Legal 6(SR) 5(R) 4(R) 3(R) 1 2
B4 6(SR) 5(R) 4(R) 3(R) 2(R) 1

• 1 is top priority.

• S: The data has to be separated and printed on more than one page.

• R: The data is reduced to fit o n t he printer paper.

• If Specified Cassette Sele ction has been switched on, messages from

specified senders will always go to the upper cassette, regardless of the
paper size or message size.

• Some of the reports can be print ed on A5 pa per without page separa-

tion. However, if only A5 paper is in the cassette s, reports that need
larger paper sizes will require page separation.

2-20

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

6. Tra nsfe r Corona Unit

[B]

[A]

2

The voltage of the transfer corona unit [A ] is between 3.8 and 5.5 kV. It gives
a 200 V charge to the paper to pull th e ne ga tive ton er off the master belt. The
bend [B] in the master belt also helps the paper to leave the belt. There is no
antistatic brush to aid sep aration.

Reference: Group 3 Facsimile Manual, section 4-6

2-21

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

7. Fusing Unit

Fusing Unit Drive

[A]

The main motor [A] drives th e fusing unit through a tra in of gea rs.

Fusing Unit Control

• Standby temperat ure: 65 °C

• Printing start temperature: 130 °C

• Maximum printing tempe rat ure: 170 °C (monitored by a comparato r )

• Thermistor maximum: 220 °C

• Thermostat maximum: 400 °C

When the main power is switched on , th e fusing lamp heats up to 65 °C in
about 10 s.

When a ringing signal is detect ed (o r when the user pre sses Start or Copy for
taking a copy), the fu sing la mp heats up to 130 °C in about 15 s.

At the end of printing , the ozone fan stays on until the fusing unit temperature
has fallen below 130 °C.

Reference: Group 3 Facsimile Manual, section 4-7

2-22

[A]

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

8. Cleaning

[C]

[B]

[C]

[A]

2

The CTM contains the cleaning unit and the used toner tank.
When the CTM is out of the machine , the cleaning blade [A] is forced against

a mylar plate, which prevents used toner from falling out.
When the CTM is placed inside th e mach ine, a tab on the copy exit cover

pushes plate [B], which moves the cleaning blade away fro m the myla r and
against the master belt.

The cleaning blade wipes toner off the master belt as it passes the cleaning
unit. The toner goes to the used toner tank. The cleaning roller [C], driven by
the main motor removes any ton er that may remain attached to the cleaning
blade.

There is no toner overflow detection mechanism. This is becau se t he use d
toner tank is removed with the old CTM when the ton er casse tte is empty; the
toner near-end sensor detects this.

Reference: Group 3 Facsimile Manual, section 4-9

2-23

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

9. Quenching

[A]

[B]

The quenching lamp [ A] is an LED array. After quenching, the charge on the
master [B] is about -20 V .

Reference: Group 3 Facsimile Manual, section 4-10

2-24

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

2.2.2. Circuits

1. Laser Diode

Laser Diode Drive

Front Cover

Interlock Switch

AC/DC

Converter

+24V

1-1

Front Cover

Microswitch

PSU

1-2

3-8

2-1

+5V

1-1

20-5

8-1

8-2

FCU

+5V

2

+24VD

+5VLD

9-1

1-8

LDDR

Laser
Diode

Controller

Laser
Diode

The laser diode is powered by a special +5V supply, called +5VLD.
There are two switches activated by the front cover; the front cover interlock

switch, and the front cover microswitch . If either of these switches is open,
the power supply to the laser diode is interrupted.

The laser diode is not started unt il the follo wing cond itio ns ha ve been met:

• The main and hexagonal mirror motors are rotating at the correct speeds

• The page memory contains a complete page

• The fusing lamp is at th e prin ting temperature

2-25

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Laser Diode Power Control

Laser

Power

Controller

1-2 1-4 1-5

DATA

Laser

Interface

Laser

Diode

LDDR

1-6

CONTROL FEEDBACKDISABLE

9-49-59-7

9-3

FCU

I/O

Port

CPU

The Laser Interface sends a constant signal to the laser diode on CN9-7, forc­ing the diode to stay on. The feedback signal returns to the FCU on CN9-3 . I f
necessary, the cpu adjusts the laser diode power to the correct value by alte r­ing the control signal (CN9-4).

If the cpu determines that laser dio de powe r cont rol ha s faile d, it send s CN9­5 to low, which disables the laser diode.

Service Note

If one of the following occurs, the printer will be disabled, and an Auto S ervice
Call will be sent to the service station (the messag e will b e LD PO WER CON­TROL FAILURE).

• If there is no response to lase r powe r control (the cpu sends CN9-5 low).

• If the laser diode power sup ply (+5VLD) is cut.

2-26

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PRINTER

2. Fusing Unit

FUSING UNIT

Fusing

Lamp

Thermistor

36-2

+5V

36-1

LIVE

NEUTRAL

170 C [A]

4-1,4

4-3,6

36-3

I/O

Port

AC Switching

Circuit

3-1

36-4

[B]

[C]

PSU

3-2

1-8

Main

Power

Supply

2

1-7

FCU

The circuit shown in the above dia gram controls the fusing unit .

• The I/O Port monito rs t he fusing unit temperature at CN36 -1.

• The signal at CN36-4 (from the comparator [A]) remains low if the fusing

unit temperature is below 170 °C.

• The I/O Port switches th e fusing unit on/off using signal [B].

• If the thermistor is accidentally disconnect ed , the link betwe en CN36-3

and CN36-4 will also be bro ken. When the cpu detects this, an Auto
Service Call will be sent.

Standby mode

• If the fusing lamp is below 65 °C, the I/O Port sends sign al [B ] low,

which makes CN1-8 go high. This switches on th e f using lamp.

• If the fusing lamp go es ab ove 65 °C, [B ] go es hig h, and CN1-8 goes

low , which switches off the fusing lamp.

Continued on the next page

2-27

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PRINTER

Printing

• When a ringing signal is detect ed , CN1-8 goes high, to switch on the

fusing lamp. Also, t he o zone fan switches on.

• During printing, the temperature is kept at 170 °C. If the temperature

rises above 170 °C, the output from the compa rator changes state.
CN36-4 goes high, while [B] rema ins low. This causes CN1-8 to go low,
which switches off the fusing lamp.

• If the comparato r f ails, the re are additional safety cutoffs at 220 °C (ther-

mistor) and at 400 °C (thermostat).

After printing

• When the fusing lamp temperature falls back below 130 °C, the ozone

fan switches off.

Service Note

When one of the following erro r cond itio ns occu rs, the I/O Port switches off
the fusing lamp by raising CN1-7 to high . The print er will be disa bled, and an
Auto Service Call will be sent to the service station (the message will be HOT
ROLLER DOWN).

Standby mode

• If the fusing lamp ta kes more than 30 s to reach 65 °C

During printing

• If the fusing lamp takes more than 40 s to rise to 130 °C from 65 °C

• If the fusing lamp sta ys a bo ve 170 °C f or more tha n 5 s

After printing

• If the fusing lamp ta kes more than 10 minutes to fall back to 13 0 °C

At any time

• If the fusing lamp temperature reaches 220 °C

• If the thermistor is accidentally disconnected (see the previous page for

details)

2-28

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3. PCBs AND THEIR FUNCTIONS

2.3.1. FCU

HandsetLine

SBU

(CCD)

Scanner
Sensors

Operation

Panel

Speaker

Modem AFE

CONTROL SIGNALS

Video Processing

Memory

Video

Processor

NCU

CPU

HIC

PSU

Port

Scanner and Printer Drive
Components and Sensors

2

FCU

I/O

RS-232C

Interface

MBU

DATA AND ADDRESS BUS

Laser

Interface

Page

Memory

SAF

Memory

ECM

Memory

RAMROM

Laser Diode Driver
Main Scan Start Detector
Interlock Switch

2-29

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PCBs AND THEIR FUNCTIONS

1. CPU (AFSP)

• 65C02 compatible micro pro cesso r

• Interrupt control

• DMA control

• Data compression and reconstruction (high speed MH cod ing for 4.5-

second scanning)

• Modem (digital operations)

• Real time clock (battery backed-up)

• Memory control

• Control of all mechanisms (dire ctly or th rough other chips)

• NCU control (through the I/O Po rt)

2. I/O Port (LIOP)

• Clock control

• Sensor monitoring (includ ing A/D con version whe re necessa ry)

• Tone detection

• Motor drive

• Operation panel con trol

• Laser Interface control

3. Laser Interface (LIF)

• Page memory control

• Laser diode contro l

• Smoothing

4. Modem Analog Front End (Modem AFE)

• Modem (analog operations)

• Attenuation

5. Video Process or (VP P )

• Analog/digital vide o signal processing

6. Hybrid IC (HIC)

• Filters

7. RAM

• 128k for ECM (no back-up)

• 256k SAF memory (with battery back-up)

• 576k page memory

2-30

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3.2. MBU

System

ROM

DATA AND ADDRESS BUS

Memory Back-up

Control

+

To/From

FCU

1. System ROM

• Contains the software to run the machine

MBU

2

System

RAM

To/From

FCU

2. System RAM

• 32k SRAM and 32k PSRAM for parameter storage, line buffer , FIFO,

SAF memory administration

The SRAM is backed up by the batt ery on the MBU.

2-31

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PCBs AND THEIR FUNCTIONS

2.3.3. SBU

Analog Video

To the FCU

Drive Clocks

From the FCU

Drivers

CCD

+12V

+12V

+

Emitter

Follower

Inverter

Amplifier

SBU

2.3.4. OPU

LCD Panel

LCD Panel

Controllers

Operation Panel

Keys

Operation Panel

Operation Panel

Controller

Serial Interface

To/From FCU

LEDs

Output

from the
Scanner
Sensors

2-32

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2.3.5. LDDR

2.3.6. PFU

Lower Cassette

Sensors

DATA

Laser

Power

Controller

CONTROL

To/From FCU

Indicator

PFU

POWER

Panel

Lower Cassette

Controller

Driver

Laser

Diode

LDDR

2

Lower Cassette

Mechanical

Components

Serial Interface

To/From FCU

2-33

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PCBs AND THEIR FUNCTIONS

2.3.7. NCU

1. PCB Block Diagram

L1

L2

GS

T2

T1

Protection

Circuit

FG

To

Handset

To

Network

Filter

Filter

Line

Current

Detector

Gs Relay

Di Relay

Oh

Relay

Ds Relay

Ringing

Signal

Detector

Relay
Driver

Tx/Rx Data

To/From FCU

To

FCU

From FCU

NCU

• For simplification, relay drive signals and detector outputs to/from the

FCU are not shown on this diagram.

• In the above diagram, the relays are shown in the standby position for

Auto Receive (Fax) Mode.

2-34

DETAILED SECTION DESCRIPTIONS November 30th, 1991
PCBs AND THEIR FUNCTIONS

2. Signal and Jumper Settings

The following table shows the jumper po sitio ns fo r each country, and the
status of the relay control signals (CN3-A7, B 7, and A8). The country is se­lected by the Country Code for NCU Para meters (NCU Parameter 00; use
Function 96).

Standby Mode After Ringing Detection Jumpers

A8

TB1

TB3TB8TB4TB5TB6JP

&

2

1

CN3-A7CN3-B7CN3-A8CN3-A7CN3-B7CN3-

Germany X X X O O X O X X X X X X
UK X O X O O X OXXXXXX
Italy O O X O O X O X X X X X X
Austria O O XXXXOXXOXXX
Belgium O O XXXXOXXXXXX
Denmark O O XXXXOXXXXOX
Finland O OOOOXOXXXXXX
Ireland O O X X X O O X X X X X X
Norway X O X X X O O X X X X X O
Sweden X XXXXXOXXXXXX
Switz. X O XXXXOOOXXXX
Portugal O O XXXXOXXXXOX
Holland O O X X X O O X X X O X X
Hg Kong X O X O O X OXXXXXX
S. Africa O OOOOXOXXXXXX
Australia X O X O O X O X X X X X X
N. Z’land X O X O O X O X X X X X X
Israel O O X O O X OXXXXXX
Spain O O XXXXOXXXXOX
Singapore O O X O O X O X X X X X X
Malaysia X O X O O X O X X X X X X

2

Key

Signal Status: O = High, X = L ow
Jumper Settings: O = Closed, X = Open

2-35

November 30th, 1991 DETAILED SECTION DESCRIPTIONS

PCBs AND THEIR FUNCTIONS

2.3.8. PSU

LIVE

NEUTRAL

GROUND

AC Power

to the

Fusing Lamp

Prevention

Fusing Lamp

Enable

From FCU

Surge

+24VD

AC Switching

Circuit

To

FCU

Main

Switch

+24VD

From

Front Cover

Interlock

Switch

Noise

Filter

Surge

Prevention

+24V

To

Front Cover

Interlock

Switch

Surge Current

Prevention

+24V

To

FCU

Power Supply

Generation

Circuits

+5V

To

FCU

PSU

-12V
To

FCU

Overheat Protection in the PSU

If the PSU thermistor temp erature exceeds about 100 °C, the powe r supp ly
outputs from the PSU are disab led .

If this happens:

1. Switch off the machine.

2. Take out the PSU and examine it for dama ge . Take care because it may
be hot.

3. Put back the PSU and switch the machine on. If the machine does not op­erate, chang e th e PSU.

2-36

INSTALLATION November 30th, 1991
CONNECTING UP THE MACHINE

3. INSTALLATION

3.1. CONNECTING UP THE MACHINE

POWER
SWITCH

220-240V
50Hz
Grounded

LINE

TEL

3

Phone
Company’s
Jack

HANDSET

3-1

Installation Procedure

1. Install the master unit. (refer to the Installation Manual)

2. Install the toner cartrige. (refer to the Installation pro cedure on the carton box)

3. Install the handset and connect the line. (refer to next page)

4. Install the paper cassette. ( r efer to the Operator’s Manual)

5. Attach the trays and document table.

[B]
[A]: 1 screw

November 30th, 1991 INSTALLATION

INSTALLING OPTIONAL UNITS

3.2. INSTALLING OPTIONAL UNITS

3.2.1. Lower Cassette

Check whether there are any messages in the memory. If there are, you
must install the lower cassette and turn the power back on within an hour.

[A]

[B]

[D]

[C]

[C]

Fit pegs [B] into holes [C].

[D]: 5 screws

3-2

[F]

[G]

[H]

INSTALLATION November 30th, 1991
INSTALLING OPTIONAL UNITS

[F]

[E]

[E]: 2 connectors

3

Remove two screws [F].

[G]

Install brackets [G] (2 screws each).
Screws [H]: Use previously removed
screws [F].
Screws [I]: In the accessories bag.

[I]

3-3

November 30th, 1991 INSTALLATION

INSTALLING OPTIONAL UNITS

[J]

Adjust the cassette in accordance
with customer requirements.

3-4

INSTALLATION November 30th, 1991
INSTALLING OPTIONAL UNITS

3.2.2. Memory Card

• Turn off the power before installing or removing a memory card.

• Make sure that 100% is displaye d on the operat ion panel before install-

ing or removing a memory card, or data may be lost.

3

3-5

November 30th, 1991 INSTALLATION

INSTALLING OPTIONAL UNITS

3.2.3. Cassette (250 Sheets)

3-6

INSTALLATION November 30th, 1991
INSTALLING OPTIONAL UNITS

3.2.4. Cassette (500 Sheets)

3

3-7

November 30th, 1991 INSTALLATION

INSTALLING OPTIONAL UNITS

3.2.5. Handset

[A]

[A]: 2 screws

[B]

3-8

INSTALLATION November 30th, 1991
INSTALLING OPTIONAL UNITS

3.2.6. Language ROM Selection

The standard ROM contains the following languages: English, German, Ital­ian, Swedish, Spanish. The user can select one of the se la ng ua ge s with a
user programming function.

If the user wishes to use French, install the French language ROM. This
ROM contains the following lang ua ges: En glish , German, Italian, Swedish,
French. In the same way as for the standa rd ROM, the user can select one of
these languages with a user progra mming function.

Note: • Switch the machine off before chan gin g the ROM.

• Make sure that there are no messa ges in the memory be fo re you

change the ROM, or data will be lost.

3

3-9

November 30th, 1991 INSTALLATION

INITIAL PROGRAMMING

3.3. INITIAL PROGRAMMING

Check the following:

• Are the country codes for NCU parameters (Fun ctio n 96, parameter 00)

and bit switch settings (bit switch 0F) correct fo r the coun try of insta lla­tion?

• Are the NCU jumper setting s correct for the country of installa tio n (see

section 2-3-7)?

• Do any bit switch or other setting s have to be changed to match line

conditions or user requirements?

• Have the correct operatio n panel decals and Quick Dial sheets been in-

stalled from the language kit?

• Have you programmed th e serial number (Function 98, sect ion 4-1-18)?

In some countries, the use r ca nn ot prog ram the following items, so program
them before you lea ve th e machine.

• Telephone Line Type (Function 71, section 4-1-23)

• CSI (Function 53, section 4-1-22)

The user should program the follo wing items after installation:

• Telephone Line Type (in some countries, this is not a user adjust ment)

• RTI, TTI, and CSI (in some coun trie s, CSI is not a user adjustment)

• ID Codes (ID Code, Remote ID, Confidential ID, Memory Lock ID)

• The fax machine’s own telephone number

• Date and T ime

• Language Selection

3-10

SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4. SERVICE TABLES AND PROCEDURES

4.1. SERV ICE LEVEL FUNCTIONS

4.1.1. Bit Switch Programming (Function 91)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 1 Yes

Bit 7 is displayed at the lef t, and bit 0 at
the right.

3. Increment bit switch: #
Decrement bit switch:
Example: Display bit switch 3: # x 3

4. Adjust the bit swit ch.
Example: To change the value of bit
7, press 7

5. Either:

• Adjust more bit switches - go to step 3.

*

FUNCTION Y/∇
9 SERVICE FUNCTIONS

DEFAULT: 0000 0000
BITSW 00: 0000 0000

DEFAULT: 0000 0000
BITSW03: 0000 0000

DEFAULT: 0000 0000
BITSW03: 1000 0000

4

• Finish - Function

4-1

November 30th, 1991 SERVICE TABLES AND PROCEDURES

SERVICE LEVEL FUNCTIONS

4.1.2. System Parameter List (Function 92)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 2 Yes Start
After printing, press Function

4.1.3. Error Code Display (Function 93)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 3 Yes

3. Either:
Scroll through the error code s - #

Finish - Function

4.1.4. Service Monitor (Function 93)

FUNCTION Y/∇
9 SERVICE FUNCTIONS

FUNCTION Y/∇
9 SERVICE FUNCTIONS

ERROR CODE #/∇
1-01 JAN 01 17:30

1. Function 5 1 9 9 1

then immediately Yes

2. 9 3 Yes

3.

No/∇ Start

FUNCTION Y/∇
9 SERVICE FUNCTIONS

ERROR CODE #/∇
1-01 JAN 01 17:30

4.1.5. Protocol Dump (Function 94)

1. Function 5 1 9 9 1

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 4 Yes START

PROTOCOL DUMP LIST

3. Start

4-2

SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.6. RAM Display/Rewrite (Function 95)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 5 Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

Y/∇
DISPLAY MEMORY

3. Yes ADDRESS = 2044C

DATA = 03

4. Input the address that you wish to see. Example: Address 20202

2 0 2 0 2

ADDRESS = 20202
DATA = 00

Note: The first digit must always be 2.

5. If you wish to change the data, type in the new data.

Example: 80, press 8 0 ADDRESS = 20202

DATA = 80

Note: If you wish to move the curso r, press

→

6. Either:

• View more addresses - g o to st ep 4.

• Finish - Yes Function

4.1.7. RAM Dump (Function 95)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 5 Yes

3.

∇ Yes

4. Input the bank number (B) and the start and
end addresses. Max. range : 25 6 byt es

Example: Start at 1200, end at 12FF.

1 2 0 0 1 2 F F Start MEMORY DUMP START

4

FUNCTION Y/∇
9 SERVICE FUNCTIONS

Y/∇
DISPLAY MEMORY

MEMORY DUMP START/N
B=2, ST-0000,END-00FF

The value of B is always 2.

B=2, ST-1200,END-12FF

4-3

November 30th, 1991 SERVICE TABLES AND PROCEDURES

SERVICE LEVEL FUNCTIONS

4.1.8. NCU Parameters (Function 96)

1. Function 5 1 9 9 1

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 6 Yes NCU PARAMETER KPAD/Y

NO.00 001

3. Scroll through the parameters - Yes
Enter new values at the keypad.

Example: Set NCU parameter 04 to 005 .

Yes Yes Yes Yes 0 0 5 NCU PARAMETER KPAD/Y

NO.04 005

4. To finish: Function

Note: Parameter 00 is the Country Code, and Parameter 01 is the Tx Level

(if the Tx level should be -9 dB, input 9 ).
Refer to section 4-3 for full details on NCU parameters.

4.1.9. ADF Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 7 Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

SCN-1 DT-2 PL-3 LD-4
MDM-5 RI-6 CK-7 SN-8

3. 1 SCANNER TEST KPAD

ADF-1 LAMP-2

4. 1

5. Function Function

6. Place a document in the feeder,
then press Copy Start

4-4

SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.10. Xenon Lamp Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 1

SCANNER TEST KPAD
ADF-1 LAMP-2

4. 2 SCANNER LAMP TEST

The xenon lamp lights up for 5 minutes.

4.1.11. DTMF T one Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 2

DTMF TEST
DUAL-1 SINGLE-2

4. Either:

• Test dual tones - 1 . Go to step 5.

• Test single tones - 2 . Go to step 8.

5. The display is as shown opposite. DUAL TONE

PRESS KEYPAD

Press a key on the ten key pad.
Example: 1 Start

6. To stop the test: Stop

7. Either:
Test another tone: Go to step 5.

Finish: Function

4

4-5

November 30th, 1991 SERVICE TABLES AND PROCEDURES

SERVICE LEVEL FUNCTIONS

8. The display is as shown opposite.

Press the required key.

697 Hz 1 852 Hz 3 1209 Hz 5 1477 Hz 7
770 Hz 2 941 Hz 4 1336 Hz 6 1633 Hz 8

Example: To test 1633 Hz, press 8 Start

9. To stop the test: Stop

10. Either:
Test another tone: Go to step 8.
Finish: Function

4.1.12. Printer Test Patterns (Function 97)

1. Function 5 1 9 9 1

SINGLE TONE
PRESS KEYPAD

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 3

PATTERN PRINT KPAD
1-7

4. Press a key from 1 to 7, excluding 5 and 6. (Patterns 5 and 6 are not
used in this model. ) A test pattern is printed.

4.1.13. Operation Panel Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 4

4-6

SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.14. Modem Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

FUNCTION Y/∇
9 SERVICE FUNCTIONS

2. 9 7 Yes SCN-1 DT-2 PL-3 LD-4

MDM-5 RI-6 CK-7 SN-8

3. 5

MODEM TEST
G3-1 TONE-2

4. Either:
Test G3 carrier signals - 1 . Go to step 5.

Test frequencies - 2 . Go to step 8.

5. The display is as shown opposite. 9600-1 7200-2

4800-3 2400-4 300-5

Press the required key.
Example: Test the 9600 bps carrier 1 Start

6. To stop the test: Stop

7. Either:
Test another tone: Go to step 5.

Finish: Function

8. The display is as shown opposite. 2100-1 1100-2 800-3

PRESS KEYPAD

Press the required key.
Example: To test 1100 Hz, press 2 Start

9. To stop the test: Stop

10. Either:

• Test another tone: Go to step 8.

• Finish: Function

4

4-7

November 30th, 1991 SERVICE TABLES AND PROCEDURES

SERVICE LEVEL FUNCTIONS

4.1.15. Ringer Test (Function 97)

Not used; do not try to use this functio n.

4.1.16. Buzzer Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 7 Yes

3. 7
Press the Stop key to stop the buzzer.

4.1.17. Ozone Fan Test (Function 97)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 7 Yes

3. 8
Press the Function key to stop the fan .

FUNCTION Y/∇
9 SERVICE FUNCTIONS

SCN-1 DT-2 PL-3 LD-4
MDM-5 RI-6 CK-7 SN-8

FUNCTION Y/∇
9 SERVICE FUNCTIONS

SCN-1 DT-2 PL-3 LD-4
MDM-5 RI-6 CK-7 SN-8

4.1.18. Serial Number (Function 98)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 8 Yes

3. Enter the machine’s serial no at the keyp ad .

To correct a mistake: No

4. If the display is correct: Yes

4-8

FUNCTION Y/∇
9 SERVICE FUNCTIONS

SERIAL # KPAD

SERIAL # KPAD/Y/N
7940479186

SERVICE TABLES AND PROCEDURES November 30th, 1991
SERVICE LEVEL FUNCTIONS

4.1.19. Service Station Telephone Number (Function 99)

1. Function 5 1 9 9 1

then immediately Yes

2. 9 9 Yes TEL NUMBER KEYPAD

3. Input the telephone numbe r of the service station that will receive Auto
Service calls from this machine.

4. Yes Function

4.1.20. Bypassing Restr icted Acces s

Use this procedure if the use r has switched on Restricted Access. Th is e n­ables you to use the mach ine wit hout having to input a Person al Code. It is
also useful if the user canno t op era te the machine because th ey can no t re­member any of the Personal Codes.

1. 2 2 2 2

FUNCTION Y/∇
9 SERVICE FUNCTIONS

TEL NUMBER KPAD/Y/N
2125555242

2. Immediately press Quick Dial key 11

Then operate the mach ine as you wish. When the machine is returned to
standby mode, Restricted Acce ss is reimpose d immediat ely.

4.1.21. Printing all Memory Files (Function 24)

First, set bit 5 of bit switch 01 to 1.

1. Function 2 4 Yes FILE NO

2. Press

All files in the memory, including confident ial messa ge s, will be prin ted one
by one. The files will not be erased.

After you have finished, set bit 5 of bit switch 01 back to 0.

Note: To erase memory files, set bit 2 o f bit switch 00 to 1. All files will be

No/∇ Yes Start .

erased, and some RAM addresse s will also be cleared.

4

4-9

November 30th, 1991 SERVICE TABLES AND PROCEDURES

SERVICE LEVEL FUNCTIONS

4.1.22. CSI Programming

This procedure is for use in countrie s where CSI programming is a service
function.

First, set bit 5 of bit switch 01 to 1.

1. Function 5 2 2 2 2

5 3 Yes

2. Press No twice.

Y/∇
SET RTI

Y/∇
SET CSI

3. Press Yes . CSI KPAD

4. Input the CSI.

CSI KPAD/Y/N

Note: Not more than 20 digits.

2015559456

5. Press Yes Function .

After you have finished, set bit 5 of bit switch 01 back to 0.

4.1.23. Telephone Line Type Selection

This procedure is for use in countries where telephone line type selection is a
service function.

First, set bit 5 of bit switch 01 to 1.

1. Function 5 2 2 2 2

7 1 Yes

2. Press Yes .

Y/∇
SELECT TT/DP

LINE = TT Y
TT=1 DP=2

3. Either:
Select tone dialling - 1 .

Select pulse dialling - 2 .
Finish: Function

After you have finished, set bit 5 of bit switch 01 back to 0.

4-10

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

4.2. BIT SWITCHES

WARNING

Do not adjust a bit switch that is described as "Not used", as this

may cause the machine to malfunction or to operate in a manner

that is not accepted by local regulations. Such bits are for use only

in other areas, such as Japan.

Bit Switch 00

FUNCTION COMMENTS

0 MTF process

0: Enabled 1: Disabled

1 RAM reset level 2

1: Reset

2 RAM reset level 3

1: Reset
Note: RAM reset level

1 is a RAM
adjustment. It is not
described in this
manual.

3 Memory file forwarding

1: Forward the files

4 Inclusion of technical

data on the Journal

0: No 1: Yes

5 Monitor speaker

during video data
communication (tx
and rx)

0: Disabled
1: Enabled

6 Not used Do not change the factory setting.

Continued on the next page

0: The MTF process is used when required by the software.
1: The MTF process is never used.

When this bit is set to 1, all items stored in the RAM are
reset except the clock, and then this bit changes back to 0
automatically. Also, all image files in the SAF memory are
erased.

When this bit is set to 1, some items stored in the RAM are
reset, then this bit changes back to 0. All items are reset
except the bit switch and NCU parameter settings, clock,
own tel. no., CSI, RTI, TTI, Quick Dials, Speed Dials,
Groups, and the Journal memory. Also, all image files in the
SAF memory are erased.
This bit switch is recommended for use when it is necessary
to clear the SAF, as fewer RAMs will need reprogramming.

Use this if the printer does not work, but the user wishes to
print the files. First, change the fax machine’s telephone
number (Function 51) to the number to which you wish to
forward the files, then set this bit to 1. All files in the memory
will be forwarded. This bit resets to 0 automatically.
However, you must return the fax machine’s telephone
number to the original setting. The files stay in memory.

1: Instead of the personal code, the following data are listed
on the Journal as a six-figure number.
First two numbers: Final modem rate (for example, 96
means 9,600 bps)
Second two numbers (Rx mode only): Rx signal level (Level
= 0 - 0.375x, where x is the value on the report; accurate to
3 dB)
Third two numbers (Rx mode only): Rx cable equalizer; 00 =
Equalizer is Off, 01 = Equalizer is On

Used for testing. Set this bit to 1 to hear the fax data signal
(phase C of CCITT T.30 protocol).
Make sure that you reset this bit after testing.

4

4-11

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

Bit Switch 00

FUNCTION COMMENTS

7 Communication

parameter display

0: Disabled
1: Enabled

Communication parameter display

This is a fault-finding aid. The LCD shows the key
parameters (see below). This is normally disabled because
it cancels the CSI display for the user.
Make sure that you reset this bit after testing.

Modem rate

(bps)

96: 9600
72: 7200

48: 4800
24: 2400

Bit Switch 01

0

LCD contrast

Bit 2 1 0 Contrast

1

0 0 0 Brightest
0 0 1 ↓

2

↓ ↓
1 1 0 ↓
1 1 1 Darkest

Memory read/write by RDS

Bit 4 3 Setting

3

0 0 Always enabled
0 1 User selectable

4

1 0 User selectable
1 1 Always disabled

5 Dedicated transmission parameter

programming/printing all SAF files

0: Disabled 1: Enabled

6 Not used Do not change the factory setting.

Continued on the next page

Sub-scan

Resolution

S: 3.85
l/mm
D: 7.7 l/mm

F: 15.4 l/mm 1E: MH+EFC

FUNCTION COMMENTS

Coding Width and

reduction

1D: MH
2D: MR

2E: MR+EFC
1C: MH+ECM

2C: MR+ECM
MC: MMR+ECM

A: A4 [8.3"]
B: B4 [10.1’]

C: A3 [1 1.7"]
N: No reduction
R: Reduction

Use these bit switches to adjust the brightness
of the LCD on the operation panel.

(0,0): At any time, an RDS system can read or
write RAM data such as TTI and bit switches.
(0,1), (1,0): Normally, RDS systems are locked
out, but the user can temporarily switch RDS
on to allow an RDS operation to take place.
RDS will automatically switch off again after a
certain time, which is stored in a RAM address
(see section 4-5). Note that, if an RDS
operation takes place, RDS will not switch off
until this time limit has expired.
(1,1): All RDS systems are always locked out.

This bit must be set to 1 before attempting to
program dedicated transmission parameters or
printing all files stored in the SAF memory. If
CSI and /or telephone line type is a service
mode in your area, this bit must also be at 1
before programming.

DCS:
CCITT G3

NSS:
Non­standard G3

Mode I/O Rate

(ms/line)

0M: 0
5M: 5

10M: 10
20M: 20
40M: 40

4-12

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 01

FUNCTION COMMENTS

7 Auto Service Call for PM

0: Enabled 1: Disabled

Bit Switch 02

FUNCTION COMMENTS

0 Page separation mark

0: Enabled 1: Disabled

1 Repetition of data when the

received page is longer than the
printer paper

0: Disabled 1: Enabled

2 Reduction of the length of

received data

0: Enabled 1: Disabled

3 Not used Do not change the factory settings.
4
5

Maximum transmittable document
length

6

Bit 7 6 Setting

0 0 600 mm

7

0 1 1200 mm
1 0 14 m
1 1 100 m

0: The machine will send an Auto Service Call
when the PM interval has expired. This interval
is adjustable by RAM address. The default
setting is every 30,000 copies (based on the
Print counter).
1: The user will do maintenance as explained
in the Operator’s Manual whenever problems
occur.

0: If a received page has to be printed out on two
sheets, an "x" inside a small box is printed at the
bottom right hand corner of the first sheet, and a
"2" inside a small box is printed at the top right
hand corner of the second sheet. This helps the
user to identify pages that have been split up.

1: No marks are printed.
0: The next page continues from where the

previous page left off
1: The final few mm of the previous page are
printed at the top of the next page.
See section 2-2-1, subsection 5, for details.

This bit determines whether incoming pages are
reduced to fit on the copy paper if they are
almost the same length as the copy paper in the
cassette. See section 2-2-1, subsection 5, for
details.

If the user wants to send very long documents
such as well logs, use the 14 m or 100 m setting.

4

4-13

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

Bit Switch 03

FUNCTION COMMENTS

0 Dialling with the handset off-hook

0: Enabled
1: Disabled

1 Lifetime of polling standby files in

the memory

0: Erased after being polled
1: Kept until user erases

2 Inclusion of communications on

the Journal when no image data
was exchanged.

0: No 1: Yes

3 Printing of the error code on the

error report

0: No 1: Yes
4 Not used Do not change the factory setting.
5 Printing the TTI in copy mode

0: No 1: Yes
6 Printing the received RTI/CSI

0: No 1: Yes

7 Reconstruction time for the first

line in receive mode

0: 6 s 1: 10 s

If this bit is 1, the user will not be able to dial if
the handset is off hook.

0: Messages stored for polling transmission will
be erased immediately after polling.
1: This setting allows the user to keep messages
in the memory to be polled by more than one
station.

If communication did not reach phase 3 of
CCITT T.30 protocol (such as for a telephone
call), this communication can be listed on the
Journal if this bit is at 1.

If this bit is 1, error codes are printed on the error
reports for the user.

If this bit is 1, the TTI stored in the machine is
printed at the top of the copy.

In addition to the TTI, the other end’s RTI or CSI
will be printed on top of the pages that the
machine receives.

When the sending terminal is controlled by a
computer, there may be a delay in receiving
page data after the local machine accepts set-up
data and sends CFR. If this occurs, set this bit to
1 to give the sending machine more time to send
data.

4-14

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 04

FUNCTION COMMENTS

Compression modes available in

receive mode

0

Bit 1 0 Modes

0 0 MH only

1

0 1 MR or MH

1 0 MR or MH, with

EFC

1 1 MMR, MR, or

MH, with EFC

2 Error counting method

0: 10 (20) [40]

1: In accordance with the settings

of bits 3 to 7

Burst error threshold

3

Bit 4 3 Threshold

0 0 3 (6) [12]

4

0 1 4 (8) [16]

1 0 5 (10) [20]

1 1 6 (12) [24]

Error line ratio

5

Bit 7 6 5 Value

0 0 0 5%

6

0 0 1 6%

0 1 0 7%

7

0 1 1 8%

1 0 0 9%

1 0 1 10%

These bits determine what capabilities are
informed to the transmitting side in the protocol
exchange.

The machine counts data errors caused by a
noisy line or defective machine.
0: If the count reaches 10 (Standard mode), 20
(Detail mode), or 40 (Fine mode), the machine
sends RTN to the other end in reply to the post­message command. As 10 (or 20 or 40) good
lines cause the count to decrement, RTN will
only occur in bad conditions.

If there are more consecutive error lines in the
received page than the threshold specified by
these bits, the page is rejected. Values in
parenthesis are for Detail resolution, and those
in square brackets are for Fine resolution.

If the number of error lines divided by the total
number of lines reaches the value determined
by the settings of these bits, RTN will be sent to
the other end.

4

4-15

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

Bit Switch 05

FUNCTION COMMENTS

Compression modes available in
transmit mode

0

Bit 1 0 Modes

0 0 MH only

1

0 1 MR or MH
1 0 MR or MH, with
EFC
1 1 MMR, MR, or
MH, with EFC

2 PABX dial tone detection

0: Enabled
1: Disabled

3 PSTN dial tone detection

0: Enabled
1: Disabled

4 Busy tone detection

0: Enabled
1: Disabled

5 Not used Do not change the factory setting.

PSTN access method through

6

PABX

Bit 7 6 Method

7

0 0 No PABX
0 1 Loop Start
1 0 Ground Start
1 1 Flash Start

These bits determine what capabilities are
informed to the receiving side in the protocol
exchange.

0: PABX dial tone is detected in accordance
with the parameters programmed in RAM. The
machine will wait for the dial tone before trying
to gain access to the PSTN.

0: PSTN dial tone is detected in accordance
with the parameters programmed in RAM. The
machine will wait for the dial tone before dialling
out.

0: Busy tone is detected in accordance with the
parameters programmed in RAM. The machine
will not have to wait out the CCITT T1 time
before hanging up if the line is busy.

Set these bits to match the type of signal
accepted by the PABX. If there is no PABX
between the machine and the network, set both
bits to 0.

Bit Switch 06

FUNCTION COMMENTS

0

PSTN access number

1

Access No. Hex value of bit switch
0 F0

2

↓ ↓
9 F9

3

00 00

4

↓ ↓
99 99

5

6

7

Program this bit switch if the machine is
behind a PABX. The access number is
the number the user must dial to get an
outside line. If the machine detects the
access number at the start of a
telephone number, it will connect with
the PABX, pause for a few seconds,
then dial the number.
Example: If the access number for the
PABX is 9, the bit switch must be F9. To
do this, set all bits to 1 except bits 1 and

2.
If there is no PABX, set all bits to 1.

4-16

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 07

FUNCTION COMMENTS

0 Back to back test

0: Disabled
1: Enabled

1 Short preamble

0: Enabled 1: Disabled
2 Not used Do not change the factory setting.
3 Echo countermeasure

0: Enabled

1: Disabled

4 DIS detection number

0: 1

1: 2

5 ECM

0: On 1: Off
6 Post-message response timing (rx)

0: After feed-out

1: When the leading edge reaches the

copy feed-out sensor

7 FTZ protocol

0: Disabled 1: Enabled

Set this bit to 1 when you wish to do a back
to back test.

If this bit is 0, the Short Preamble feature is
switched on.

If the setting is 1, the machine will hang up if
it receives the same signal twice. If the
setting is 0, the machine will ignore echoes
from the line.

The machine will send DCS (G3 set-up
signal) if it receives DIS. If echoes are
frequent, setting this bit to 1 will allow the
machine to wait for the second DIS before
sending DCS.

If this bit is 0, ECM is switched on.

0: Data cannot be stored in the SAF during
reception if the memory is full, so, if this bit is
0, the machine will wait until the page has
been fed out. However, communication will
take longer to complete.
1: The post message response is sent
earlier, but the paper has not been fed out
yet, so if there is a jam after this, data may
be lost.
This bit is ignored during memory reception.

This bit must be set to 1 in Germany.

4

Bit Switch 08 (Transmission)

FUNCTION COMMENTS

0

Initial Tx modem rate

Bit 2 Bit 1 Bit 0 Setting

1

0 1 1 9,600 bps
0 1 0 7,200 bps

2

0 0 1 4,800 bps
0 0 0 2,400 bps
Other settings: Not used

3 Not used Do not change the factory settings.
4
5
6
7

These bits set the initial starting modem
rate for transmission. This rate may fall
back to a slower rate depending on line
conditions and the remote terminal’s
capabilities.

4-17

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

Bit Switch 09 (Transmission)

FUNCTION COMMENTS

0 CNG signal transmission in

manual transmission mode

0: Disabled
1: Enabled

12Wrong connection prevention

method

Bit 2 Bit 1 Setting

0 0 None
0 1 8 digit CSI
1 0 4 digit CSI
1 1 CSI/RTI

3 Closed network (transmission)

0: Disabled
1: Enabled

4 Monitor speaker status during

memory transmission

0: Off 1: On

5 Not used Do not change the factory settings.
6
7

CNG (calling tone) is normally used by auto-dial fax
machines to alert a manual machine operator that
an auto-transmitting machine is on the line waiting
to transmit. This tone is not needed for manual
operation (full number dialling).

(0,1) - The machine will not transmit if the last 8
digits of the received CSI do not match the last 8
digits of the dialled telephone number. This does not
work for manual dialling.
(1,0) - The same as above, except that only the last
4 digits are compared.
(1,1) - The machine will not transmit if the other end
does not identify itself with an RTI or CSI.
(0,0) - Nothing is checked; transmission will always
go ahead.

1: Transmission will not go ahead if the ID code of
the other terminal does not match the ID code of
this terminal. This feature may not be reliable when
communicating with another maker’s product.

If this bit is 1, the speaker will operate during
memory transmission. Keep this bit at 0 if the user
complains about the noise from the speaker.

4-18

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 0A (Reception)

FUNCTION COMMENTS

0

Initial Rx modem rate

Bit 2 Bit 1 Bit 0 Setting

1

0 1 1 9,600 bps
0 1 0 7,200 bps

2

0 0 1 4,800 bps
0 0 0 2,400 bps
Other settings: Not used

3 Not used Do not change the factory settings.
4
5
6 Cable equalizer (rx mode)

0: Off 1: On

7 Not used Do not change the factory setting.

The setting of these bits is used to inform
the sending machine of the initial starting
modem rate for the machine in receive
mode. If 9,600 bps presents a problem
during reception, use a lower setting.

Set this bit to 1 if there is signal loss at
higher frequencies because of the length
of wire between the modem and the
telephone exchange.

Also, try using the cable equalizer if one or
more of the following symptoms occurs.

•Communication error with error codes
such as 0-20, 0-23, etc.

•Modem rate fallback occurs frequently.

4

4-19

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

Bit Switch 0B (Reception)

FUNCTION COMMENTS

0 Closed network (reception)

0: Disabled

1: Enabled

1 Training error tolerance

0: Type 1

1: Type 2

23Training error tolerance

Bit 3 2 Type 1 Type 2

0 0 15 14

0 1 10 9

1 0 2 4

1 1 0 1

4 Not used Do not change the factory settings.
5
6
7

1: Reception will not go ahead if the ID code

of the other terminal does not match the ID
code of this terminal. This feature may not be
reliable when communicating with another
maker’s product.

This bit determines the values available with
bits 2 and 3.

Type 1 can be used anywhere. Type 2 is
normally used only in Europe.

If the machine detects more errors during
training than the number set by these bits,
training fails and the machine will send FTT.
The data will be resent at a lower rate.

Bit Switch 0C

FUNCTION COMMENTS

0 European protocol requirements

0: Disabled 1: Enabled

1 German dialling requirements

0: Disabled 1: Enabled

2 Austrian dialling requirements

0: Disabled 1: Enabled

3 Norwegian dialling and protocol

requirements

0: Disabled 1: Enabled

4 Danish dialling requirements

0: Disabled 1: Enabled

5 French requirements

0: Disabled 1: Enabled

6 Swiss requirements

0: Disabled 1: Enabled

7 Not used Do not change the factory setting.

Adjust these bits in accordance with the
country of installation.

4-20

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Bit Switch 0D

FUNCTION COMMENTS

0 Not used Do not change the factory settings.
1
2
3
4
5
6 Contents of the top line of the LCD

when handset mode is in use

0: Telephone number dialled

1: HANDSET MODE

7 Not used Do not change the factory setting.

Bit Switch 0E

FUNCTION COMMENTS

0 Not used Do not change the factory settings.
1
2
3
4
5 Conditions for reception

0: Normal

1: RTI or CSI needed

6 Not used Do not change the factory settings.
7

0: The telephone number being dialled is

displayed.

1: Only HANDSET MODE is displayed.

1: If the sending machine does not transmit

an RTI or CSI, the call will be rejected, and
the machine will send DCN.

4

4-21

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

Bit Switch 0F

FUNCTION COMMENTS

0

Country Code

to

7

00: France 10: Not used

01: Germany 11: USA

02: UK 12: Asia

03: Italy 13: Japan

04: Austria 14: Hong Kong

05: Belgium 15: South Africa

06: Denmark 16: Australia

07: Finland 17: New Zealand

08: Ireland 18: Singapore

09: Norway 19: Malaysia

0A: Sweden

0B: Switzerland

0C: Portugal

0D: Holland

0E: Spain

0F: Israel

This country code determines the factory
settings of a wide range of bit switches and
RAM addresses. However, it has no effect
on the NCU parameter settings and
communication parameter RAM addresses;
these are determined by the setting of NCU
parameter 00 (function 96).

Bit Switch 10

FUNCTION COMMENTS

0 Pulse dialling method

Bit 1 Bit 0 Setting

1

0 0 Normal (P=N)

0 1 Oslo (P=10 - N)

1 0 Sweden (N+1)

1 1 Sweden (N+1)

2 Not used Do not change the factory settings.
3
4
5
6
7

P=Number of pulses sent out, N=Number
dialled.

Do not change the factory settings.

Bit switches 11 to 1F are not used.

4-22

SERVICE TABLES AND PROCEDURES November 30th, 1991
BIT SWITCHES

Factory Settings

The factory settings of all the bit swit che s are sho wn be low in he xad ecima l
code. The first digit represents bits 7 to 4, and the second digit represen ts
bits 3 to 0.

Universal version

Switch Setting Switch Setting Switch Setting Switch Setting

00 00 08 03 10 00 18 00
01 01 09 01 11 00 19 00
02 42 0A 03 12 28 1A 00
03 40 0B 02 13 00 1B 00
04 03 0C 01 14 00 1C 00
05 23 0D 00 15 00 1D 00
06 FF 0E 00 16 00 1E 01
07 06 0F 02 17 00 1F 85

Asia version

Switch Setting Switch Setting Switch Setting Switch Setting

00 00 08 03 10 00 18 00
01 01 09 01 11 00 19 00
02 42 0A 03 12 28 1A 00
03 08 0B 00 13 00 1B 00
04 03 0C 00 14 00 1C 00
05 23 0D 00 15 00 1D 00
06 FF 0E 00 16 00 1E 01
07 06 0F 12 17 00 1F 85

4

4-23

November 30th, 1991 SERVICE TABLES AND PROCEDURES

BIT SWITCHES

The following tables show the chang es in th e factory settings for each coun­try. The settings depend on the country code (bit swit ch 0F).

Note: Changes to the country code (bit switch 0F) are not included in the

following tables.

Table 1: Based on the Universal version

Country Code Differences (switch settings given in Hex code)

France 00 Switch 0C: 21
Germany

UK

Italy 03 None
Austria 04 Switch 0C: 05
Belgium 05 None
Denmark 06 Switch 0C: 11
Finland 07 None
Ireland 08 None
Norway 09 Switch 0C: 09
Sweden 0A Switch 10: 02
Switzerland 0B Switch 0C: 41
Portugal 0C None
Holland 0D None
Spain 0E None

01

02

Switch 02: 46, Switch 03: 41, Switch 05: 27, Switch 07:
86, Switch 0C: 03, switch 12: 28, Switch 1D: 08

None (the settings for the Universal version are based
on those required for the UK)

Table 2: Based on the Asia version (Cou ntry code 12)

Country Code Differences (switch settings given in Hex code)

Israel 0F None
Hong Kong 14
South Africa 15
Australia 16
New Zealand 17
Singapore 18
Malaysia 19

4-24

SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

4.3. NCU PARAME TERS

The following tables give the RAM addresses and units of calcula tio n of the
parameters that the ma chin e use s for ringing signal detection and automatic
dialling. The facto ry se tt ings for each country are also given. Most of these
must be changed by RAM read/write (Function 95), but some can be
changed using NCU Paramet er pro gra mming (Function 96); if Function 96
can be used, this will be indicated in the Remarks column. The RAM is pro­grammed in hex code unless (BCD) is included in the Unit column.

When using RAM read/write, you must add the bank number before the fo ur­digit RAM address number. See section 4-1-6 for details.

Address Function Unit Remarks

413B Country code [NCU parameters

only]
413C Line current detection time 20 ms Line current is not detected
413D Line current wait time
413E Line current drop detect time
413F PSTN dial tone upper frequency

limit (HIGH)
4140 PSTN dial tone upper frequency

limit (LOW)
4141 PSTN dial tone lower frequency

limit (HIGH)
4142 PSTN dial tone lower frequency

limit (LOW)
4143 PSTN dial tone detection time 20 ms If 4143 contains FF, the
4144 PSTN dial tone reset time 160 ms
4145 PSTN dial tone continuous tone

time
4146 PSTN dial tone permissible drop

time
4147 PSTN wait interval 160 ms
4148 Ringback tone detection time 20 ms Detection is disabled if this

4149 PSTN busy tone upper frequency

limit (HIGH)
414A PSTN busy tone upper frequency

limit (LOW)
414B PSTN busy tone lower frequency

limit (HIGH)
414C PSTN busy tone lower frequency

limit (LOW)

Hex Function 96 (parameter 00).

if 413C contains FF.

Hz (BCD) See Note 2.

machine pauses for the

20 ms

Hz (BCD) If 4149 is FF, detection is

pause time (4147).

contains FF.

disabled. See Note 2.

4

4-25

November 30th, 1991 SERVICE TABLES AND PROCEDURES

NCU PARAMETERS

Address Function Unit Remarks

414D PABX dial tone upper frequency

limit (HIGH)
414E PABX dial tone upper frequency

limit (LOW)
414F PABX dial tone lower frequency

limit (HIGH)
4150 PABX dial tone lower frequency

limit (LOW)
4151 PABX dial tone detection time 20 ms If 4151 contains FF, the
4152 PABX dial tone reset time 160 ms
4153 PABX dial tone continuous tone

time
4154 PABX dial tone permissible drop

time
4155 PABX wait interval 160 ms
4156 PABX ring back tone detection

time
4157 PABX busy tone upper frequency

limit (HIGH)
4158 PABX busy tone upper frequency

limit (LOW)
4159 PABX busy tone lower frequency

limit (HIGH)
415A PABX busy tone lower frequency

limit (LOW)
415B Busy tone ON time: range 1 20 ms
415C Busy tone OFF time: range 1
415D Busy tone ON time: range 2
415E Busy tone OFF time: range 2
415F Busy tone ON time: range 3
4160 Busy tone OFF time: range 3
4161 Busy tone ON time: range 4
4162 Busy tone OFF time: range 4
4163 Busy tone continuous tone

detection time
4164 Busy tone signal state time tolerance for all ranges, and number of cycles

required for detection (a setting of 4 cycles means that ON-OFF-ON or OFF-

ON-OFF must be detected twice).

Hz (BCD) See Note 2.

machine pauses for the

20 ms

20 ms Detection is disabled if this

Hz (BCD) If this is FF, detection is

pause time (4155).

contains FF.

disabled. See Note 2.
See Note 2.

Tolerance (±)

Bit 1 0
0 0 75%
0 1 50%
1 0 25%
1 1 12.5%

Bits 7, 6, 5, 4 - number of cycles required for detection

4-26

SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Address Function Unit Remarks

4165 International dial tone upper

frequency limit (HIGH)

4166 International dial tone upper

frequency limit (LOW)

4167 International dial tone lower

frequency limit (HIGH)

4168 International dial tone lower

frequency limit (LOW)

4169 International dial tone detection

time

416A International dial tone reset time 160 ms
416B International dial tone continuous

tone time

416C International dial tone permissible

drop time

416D International dial wait interval 160 ms
416E Country dial tone upper frequency

limit (HIGH)

416F Country dial tone upper frequency

limit (LOW)

4170 Country dial tone lower frequency

limit (HIGH)

4171 Country dial tone lower frequency

limit (LOW)

4172 Country dial tone detection time 20 ms If 4172 contains FF, the
4173 Country dial tone reset time 160 ms

4174 Country dial tone continuous tone

time

4175 Country dial tone permissible drop

time

4176 Country dial wait interval 160 ms
4177 Grounding time (ground start

mode)

4178 Break time (flash start mode) 1 ms The Di relay is open for this

4179 International dial access code BCD For a code of 100:
417A

417B PABX pause time 20 ms
417C Progress tone detection level, and

cadence detection enable flags

Hz (BCD) See Note 2.

20 ms If 4169 contains FF, the

machine pauses for the
pause time (416D).

20 ms

Hz (BCD) See Note 2.

machine pauses for the
pause time (4176).

20 ms

20 ms The Gs relay is closed for

this interval.

interval.

4179 - F1
417A - 00

Bit 7 Bit 6 dBm
1 1 -53
1 0 -32.5
0 1 -40.5
0 0 -29

4

Bits 3, 2, 1, 0 - See Note 3.

417D CCITT T1 time 2.56 s

4-27

November 30th, 1991 SERVICE TABLES AND PROCEDURES

NCU PARAMETERS

Address Function Unit Remarks

417E Max. number of dials per station

(not using memory)

417F Redial interval (not using memory) 1 min
4180 Interval between dialling to

different stations

4181 Tx level from modem - dBm Function 96 (parameter 01).
4182 Acceptable ringing signal

frequency: range 1, upper limit

4183 Acceptable ringing signal

frequency: range 1, lower limit

4184 Acceptable ringing signal

frequency: range 2, upper limit

4185 Acceptable ringing signal

frequency: range 2, lower limit

4186 Number or rings until a call is

detected

4187 Minimum required length of the

first ring

4188 Minimum required length of the

second and subsequent rings

4189 Ringing signal detection reset time 40 ms Function 96 (parameter 09).
418A Time between opening or closing

the Ds relay and opening the Di
relay

418B Break time for pulse dialling See Note 5. Function 96

418C Make time for pulse dialling See Note 5. Function 96

418D Time between final Di relay

closure and Ds relay opening or
closing

418E Pause between dialled digits

(pulse dial mode)

418F Time waited when a pause is

entered at the operation panel

4190 DTMF tone on time 1 ms Function 96 (parameter 16).
4191 DTMF tone off time Function 96 (parameter 17).
4192 DTMF tone attenuation value - dBm Function 96 (parameter 18).

41B3 Max. time limit to dial a number 2.56 s All countries: 15[H] (53.76 s)
41B4 Max. no of consecutive pauses in

a telephone number

1

2.56 s

1000/
.672N
(Hz). N is
the value
stored
using
Function

96.
1 Function 96 (parameter 06).

20 ms See Note 6. Function 98

1 ms See Notes 5 and 8.

20 ms See Note 5. Function 96

Hex Germany: 1, Others: 250

Function 96 (parameter 02).

Function 96 (parameter 03).

Function 96 (parameter 04).

Function 96 (parameter 05).

(parameter 07).
Function 96 (parameter 08).

Function 96 (parameter 10).

(parameter 11).

(parameter 12).
See Notes 5 and 8.

Function 96 (parameter 13).

(parameter 14).
Function 96 (parameter 15).

See Note 7.

4-28

SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Notes

1. If a setting is not required, store FF in the address.

2. Tone frequencies are stored in BCD in the following format.
Examples:
a) 380 Hz HIGH 0 3 LOW 8 0
b) 1210 Hz HIGH 1 2 LOW 1 0

3. Italy and Belgium only
RAM address 417C: the lower four bits have the following meanin g.

Bit 3 1: Country dial tone cadence detectio n enab led
Bit 2 1: International dial tone cadence detectio n en ab led
Bit 1 1: PABX dial tone cadence detection enabled
Bit 0 1: PSTN dial tone cadence detection enabled

If bit 3 is 1, the functions of the following RAM ad dre sses are chan ge d.
4172: tolerance for on or off state duration (%), coded as in 4164.
4174: on time, hex code (unit = 10 ms)
4175: off time, hex code (unit = 10 ms)

If bits 2, 1, or 0 are 1, the functions of the followin g ad dre sses are
changed in a similar way to that described for bit 3 = 1.
Bit 2 = 1: 4169, 416B, 416C
Bit 1 = 1: 4151, 4153, 4154
Bit 0 = 1: 4143, 4145, 4146

4. Belgium only
Address 4144 for DTMF dialling is 3.04 s. This can be adjusted by RAM

read/write. However, if pulse dial mode is selected, a value of 20 ms from
the ROM is used, and this cannot be adjusted.

5. Pulse dial parameters (addresses 418A to 418F) are the values for 10
pps. If 20 pps is used, the machine auto mat ically compensates.

6. The first ring may not be detected until 1 to 2.5 wavele ng ths after the time
specified by this parameter.

7. N must be between 0 and 15. The attenuation levels are as follows.
High frequency tone: - N dBm
Low frequency tone: - N - 3 dBm

8. 418A: Europe - Between Ds opening and Di opening, France - Betwee n
Ds closing and Di opening
418D: Europe - Between Ds closing and Di closing, France - Between Ds
opening and Di closing

4

4-29

November 30th, 1991 SERVICE TABLES AND PROCEDURES

NCU PARAMETERS

On the following pages, there are tables of factory settings for each cou nt ry.
To enable the factory settings for a particu lar natio n, prog ram the Cou ntry
Code (RAM address 413B [use hex cod es] or use Function 96 [input the deci­mal value]) to the appropriate setting. The country code also affe cts the NCU
signal status (see section 2-3 -7).

• For each RAM address, there are two columns. The left han d co lumn

shows the actual value of the parameter. The right hand column shows
the value of the fact ory set ting that is stored in the RAM. The factory set ­tings are quoted either in hexade cimal cod e (th e act ua l cont ents of the
RAM address) if there is a H after the value in the table, or in decimal
(converted from the actua l h ex con tents of the RAM address) if the re is
no H after the value.

• Some RAMs must be stored using BCD; see the NCU Parameter defini-

tion table for details.

• If the table ent ry is blank, this means that the value is not used.

Country Code for NCU Parameters [or RAM Address 413B, in hex code]:

France: 00, Germany: 01, UK: 02, Italy: 03, Austria: 04, Belgium: 05, Denmark: 06, Finland:
07, Ireland: 08, Norway: 09, Sweden: 10 [0A], Switzerland: 11 [0B], Portugal: 12 [0C],
Holland: 13 [0D], Spain: 14 [0E], Israel: 15 [0F], USA: 17 [11], Asia: 18 [12], Japan: 19 [13],
Australia: 22 [16]

Tx Level (RAM Address 4181): All countries 6 (- 6dB), except the UK (10 [-10dB]), USA (9[­9dB]), and Australia (12[-12dB]).

Country

France
Germany 1.1 s 55 4.1 s 205 1.06 s 53

413C 413D 413E 413F/4140

474 Hz

498 Hz

04(H) 74(H)

04(H) 98(H)
UK/Univ
Italy
Austria
Belgium
Denmark
Finland
Ireland 1.1 s 55 4.1 s 205 1.06 s 53
Norway
Sweden
Switz. 1.1 s 55 4.1 s 205
Portugal
Holland
Spain
Israel 1.1 s 55 4.1 s 205 1.06 s 53

471 Hz
512 Hz
471 Hz
512 Hz
536 Hz
450 Hz
512 Hz
512 Hz
608 Hz
450 Hz
563 Hz
480 Hz
498 Hz

04(H) 71(H)

05(H) 12(H)

04(H) 71(H)

05(H) 12(H)

05(H) 36(H)

04(H) 50(H)

05(H) 12(H)

05(H) 12(H)

06(H) 08(H)

04(H) 50(H)

05(H) 63(H)

04(H) 80(H)

04(H) 98(H)
USA
Asia
Australia

450 Hz

04(H) 50(H)

4-30

SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 4141/4142 4143 4144 4145

France
Germany

406 Hz
370 Hz

04(H) 06(H) 2 s 100 12 s 75 1 s 50

03(H) 70(H) 2.1 s 105 20 s 125 2.1 s 105
UK
Italy
Austria
Belgium
Denmark
Finland
Ireland
Norway
Sweden
Switz.
Portugal
Holland
Spain
Israel

391 Hz
380 Hz
405 Hz
340 Hz
315 Hz
200 Hz
340 Hz
340 Hz
338 Hz
300 Hz

76 Hz
320 Hz
340 Hz

03(H) 91(H)
03(H) 80(H) 2.1 s 105 10.1 s 63 0.8 s 40
04(H) 05(H) 0.6 s 30 3.04 s 19 0.6 s 30
03(H) 40(H) 1.3 s 65 10.1 s 63 1.3 s 65
03(H) 15(H) 4.1 s 205 10.1 s 63 4.1 s 205
02(H) 00(H) 2.1 s 105 10.2 s 64 2.1 s 105
03(H) 40(H) 1.1 s 55 20 s 125 1.1 s 55
03(H) 40(H) 1.92 s 96 5.12 s 32 1.92 s 96
03(H) 38(H) 1.92 s 96 10.9 s 68 1.92 s 96
03(H) 00(H) 2.1 s 105 9.9 s 62 2.1 s 105
00(H) 76(H) 1.1 s 55 20 s 125 1.1 s 55
03(H) 20(H) 1.5 s 75 12.8 s 80 0.72 s 36
03(H) 40(H) 2.1 s 105 20 s 125 2.1 s 105

2, 50%

21(H) 10.9 s 68 0.6 s 60

USA
Asia
Australia

390 Hz

03(H) 90(H) 3.0 s 150 6 s 38 2 s 100

Country 4146 4147 4148 4149/414A
France 0.04 s 2 0 s 0
Germany 0.08 s 4 4 s 25
UK/Univ 4 s 25
Italy 1 s 100 4 s 25
Austria 0.08 s 4 4 s 25 0.1 s 5
Belgium 0.08 s 4 4 s 25

474 Hz
510 Hz
430 Hz
529 Hz
512 Hz
471 Hz

04 (H) 74 (H)
05 (H) 10 (H)
04 (H) 30 (H)
05 (H) 29 (H)
05 (H) 12 (H)

04 (H) 71 (H)
Denmark 0 .08 s 4 4 s 25
Finland 0.08 s 4 4 s 25
Ireland 0.08 s 4 4 s 25
Norway 0.08 s 4 4 s 25
Sweden 0.04 s 2 4 s 25
Switz. 0.04 s 2 4 s 25 0.1 s 5

430 Hz
512 Hz
512 Hz
608 Hz

04 (H) 30 (H)

05 (H) 12 (H)

05 (H) 12 (H)

06 (H) 08 (H)
Portugal 0.08 s 4 4 s 25
Holland 0.08 s 4 4 s 25
Spain 0.1 s 5 3.04 s 19
Israel 0.08 s 4 4 s 25

563 Hz
460 Hz
498 Hz

05 (H) 63 (H)

04 (H) 60 (H)

04 (H) 98 (H)
USA 2.08 s 13
Asia 2.08 s 13
Australia 0.02 s 1 3.04 s 19

450 Hz

04 (H) 50 (H)

4

4-31

November 30th, 1991 SERVICE TABLES AND PROCEDURES

NCU PARAMETERS

Country 414B/414C 414D/414E 414F/4150

France
Germany
UK/Univ
Italy
Austria
Belgium

406 Hz
350 Hz
360 Hz
329 Hz
380 Hz
405 Hz

04(H) 06(H)
03(H) 50(H)
03(H) 60(H)
03(H) 29(H)
03(H) 80(H)
04(H) 05(H)

900 Hz

512 Hz

09(H) 00(H)

05(H) 12(H)

300 Hz

391 Hz

03(H) 00(H)

03(H) 91(H)

Denmark
Finland
Ireland
Norway
Sweden
Switz.

370 Hz
340 Hz
340 Hz
338 Hz

03(H) 70(H)
03(H) 40(H)
03(H) 40(H)
03(H) 38(H)

608 Hz

06(H) 08(H)

338 Hz

03(H) 38(H)
Portugal
Holland
Spain
Israel

320 Hz
380 Hz
370 Hz

03(H) 20(H)
03(H) 80(H)
03(H) 70(H)

563 Hz

563 Hz

05(H) 63(H)

05(H) 63(H)

76 Hz

370 Hz

00(H) 76(H)

03(H) 70(H)
USA
Asia
Australia

390 Hz

03(H) 90(H)

450 Hz

04(H) 50(H)

390 Hz

03(H) 90(H)

Country 4151 4152 4153 4154 4155
France 2 s 100 12 s 75 1 s 50

40 ms

20 s0
Germany 4 s 25
UK/Univ 4 s 25
Italy 2 s 100

10.1 s

63

0.18 s

80 ms

9

44 s25
Austria 4 s 25
Belgium 4 s 25
Denmark 4 s 25
Finland 4 s 25
Ireland 4 s 25
Norway 4 s 25
Sweden 4 s 25
Switz. 0.8 s 40 9.9 s 62 0.8 s 40

80 ms

44 s25
Portugal 4 s 25
Holland 1.1 s 55 20 s 125 1.1 s 55
Spain
Israel 2.1 s 105 20 s 125 2.1 s 105

80 ms

80 ms

44 s25

3.04 s

19

44 s25
USA 4 s 25
Asia 4 s 25
Australia 3 s 150 6 s 38 2 s 100

20 ms

3.04 s

1

19

4-32

SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 4156 4157/4158 4159/415A

France
Germany
UK/Univ
Italy
Austria
Belgium
Denmark
Finland
Ireland
Norway
Sweden
Switz.

608 Hz

06(H) 08(H)

338 Hz

03(H) 38(H)
Portugal
Holland
Spain
Israel

563 Hz

05(H) 63(H)

370 Hz

03(H) 70(H)
USA
Asia
Australia

450 Hz

04(H) 50(H)

390 Hz

03(H) 90(H)

Country 415B 415C 415D 415E 415F
France
Germany
UK/Univ
Italy
Austria
Belgium

0.5 s

0.24 s

0.38 s

0.2 s

0.2 s

0.5 s

25
12
19
10
10
25

0.5 s

0.24 s

0.38 s

0.2 s

0.2 s

0.5 s

25
12
19
10
10
25

0.48 s

0.4 s

0.3 s

0.16 s

24
20

15

8

0.48 s

0.34 s

0.3 s

0.16 s

24
17

15

8

0.14 s

0.22 s

0.4 s

Denmark
Finland
Ireland
Norway
Sweden
Switz.

0.5 s

0.34 s

0.24 s

0.22 s

25
17
12
11

0.5 s
0 s

0.24 s

0.24 s

25

0
12
12

0.74 s

0.24 s

0.3 s

37

12
15

0.74 s

0.74 s

0.44 s

37

37
22

0.36 s

0.48 s

Portugal
Holland
Spain
Israel

0.24 s

0.16 s

0.24 s

12

8

12

0.24 s

0.16 s

0.24 s

12

8
12

0.5 s

0.16 s

0.48 s

25

8

24

0.5 s

0.16 s

0.48 s

25

8

24
USA
Asia
Australia

0.36 s

18

0.36 s

18

0.38 s

19

0.38 s

19

0.24 s

7

11

20

18

24

12

4

4-33

November 30th, 1991 SERVICE TABLES AND PROCEDURES

NCU PARAMETERS

Country 4160 4161 4162 4163 4164

France
Germany
UK/Univ
Italy
Austria
Belgium

0.48 s

0.52 s

0.4 s

24
26 2 s 100

20

4, 12.5

3, 50

4, 12.5

4, 50
4, 25

4, 12.5

43(H)
31(H)
43(H)
41(H)
42(H)

43(H)
Denmark
Finland
Ireland
Norway
Sweden
Switz.

0.36 s

0.6 s

18 0.7 s 35

30

0.16 s

0.6 s

8

30

4, 12.5

4, 75

4, 12.5

3, 50

43(H)

40(H)

43(H)

31(H)
Portugal
Holland
Spain
Israel

4, 50
4, 50
4, 50

41(H)

41(H)

41(H)
USA
Asia
Australia

0.24 s

12

0.5 s

25

0.5 s

25

4. 50

41(H)

Country 4165/4166 4167/4168 4169
France

474 Hz

04(H) 74(H)

406 Hz

04(H) 06(H) 2 s 100
Germany
UK/Univ
Italy
Austria
Belgium

1160Hz

11(H) 60(H)

1110Hz

11(H) 10(H) 4, 50% 41(H)
Denmark
Finland
Ireland
Norway
Sweden
Switz.
Portugal
Holland
Spain

563 Hz
620 Hz

05(H) 63(H)
06(H) 20(H)

76 Hz
580 Hz

00(H) 76(H) 1.1 s 55

05(H) 80(H) 1.5 s 75
Israel
USA
Asia
Australia

4-34

SERVICE TABLES AND PROCEDURES November 30th, 1991
NCU PARAMETERS

Country 416A 416B 416C 416D 416E/416F

France 12 s 75 1 s 50

0.04 s

200
Germany 0 0
UK/Univ 0 0
Italy 0 0
Austria 0 0
Belgium 20 s 125

0.33 s

Denmark 0 0
Finland 0 0
Ireland 0 0
Norway 0 0
Sweden 0 0

33

0.69 s

69 0 0

Only used

by

Sweden:

512 Hz
416E: 05( H )
416F: 12(H)

Switz. 0 0
Portugal 0 0

36

0.08 s

0.1 s

400

3.04 s

5

19

Holland 20 s 125 1.1 s 55
Spain

12.8 s

80

0.72 s

Israel 0 0
USA 0 0
Asia 0 0
Australia 0 0

Country 4170/4171 4172 4173 4174
France
Germany
UK/Univ
Italy
Austria
Belgium
Denmark
Finland
Ireland
Norway
Sweden

340 Hz

03(H) 40(H)

1.02 s

51 20 s 125

0.26 s

Switz.
Portugal
Holland
Spain
Israel
USA
Asia
Australia

4

13

4-35