Ricoh fax2000 SPECIFICATIONS f2000t

SCHMIDT 1 TAIWAN

RICOH FAX2000L

SERVICE MANUAL

30 November, 1999
Subject to change

Important Safety Notices

H545R500.WMF

Laser Safety

WARNING FOR LASER UNIT

ø

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

ø

The danger of explosion exists if a battery of this type is incorrectly
replaced.
Replace only with the same or an equivalent type recommended by the
manufacturer. Discard used batteries in accordance with the
manufacturer's instructions.

TABLE OF CONTENTS

1. OVERALL MACHINE INFORMATION........................................1-1

1.1 SPECIFICATIONS.................................................................................... 1-1

1.2 FEATURES............................................................................................... 1-3

1.3 COMPONENT LAYOUT........................................................................... 1-7

1.3.1 MECHANICAL COMPONENTS....................................................... 1-7

1.3.2 ELECTRICAL COMPONENTS........................................................ 1-9

1.4 OVERALL MACHINE CONTROL........................................................... 1-13

1.5 VIDEO DATA PATH ............................................................................... 1-14

1.5.1 TRANSMISSION............................................................................ 1-14

1.5.2 RECEPTION.................................................................................. 1-15

1.5.3 COPYING...................................................................................... 1-16

1.6 POWER DISTRIBUTION........................................................................ 1-17

1.6.1 DISTRIBUTION DIAGRAM............................................................ 1-17

1.6.2 MEMORY BACK-UP CIRCUIT ...................................................... 1-18

2. DETAILED SECTION DESCRIPTIONS.......................................2-1

2.1 SCANNER................................................................................................ 2-1

2.1.1 MECHANISMS................................................................................. 2-1

2.1.2 JAM CONDITIONS.......................................................................... 2-3

2.2 PRINTING................................................................................................. 2-4

2.2.1 PRINTING PROCESS - OVERVIEW............................................... 2-4

2.2.2 OPC DRUM ..................................................................................... 2-5

2.2.3 CHARGE ......................................................................................... 2-5

2.2.4 LASER EXPOSURE........................................................................ 2-6

2.2.5 TONER SUPPLY............................................................................. 2-8

2.2.6 DEVELOPMENT............................................................................ 2-10

2.2.7 PAPER FEED................................................................................ 2-14

2.2.8 REGISTRATION............................................................................ 2-19

2.2.9 TRANSFER AND SEPARATION................................................... 2-21

2.2.10 CLEANING................................................................................... 2-22

2.2.11 FUSING....................................................................................... 2-23

2.3 SYSTEM FEATURES............................................................................. 2-27

2.3.1 ENERGY SAVER MODES ............................................................ 2-27

2.3.2 AUTOMATIC SERVICE CALLS..................................................... 2-29

2.3.3 SEP/SUB CODING........................................................................ 2-30

2.3.4 PAGE SEPARATION AND DATA REDUCTION............................ 2-33

2.3.5 MEMORY RECEPTION CONDITIONS ......................................... 2-35

2.3.6 V.8/V.34 PROTOCOL.................................................................... 2-36

2.3.7 BLANK SHEET DETECTION......................................................... 2-38

2.4 PCBS...................................................................................................... 2-39

2.4.1 FCU ............................................................................................... 2-39

2.4.2 PSU ............................................................................................... 2-41

2.4.3 NCU (USA/TAIWAN) ..................................................................... 2-42

i

3. INSTALLA T ION...........................................................................3-1

3.1 INSTALLING THE MACHINE................................................................... 3-1

3.2 INITIAL PROGRAMMING......................................................................... 3-1

3.3 INSTALLING OPTIONAL UNITS.............................................................. 3-1

4. SERVICE TABLES AND PROCEDURES ...................................4-1

4.1 SERVICE LEVEL FUNCTIONS................................................................ 4-1

4.1.1 BIT SWITCH PROGRAMMING (FUNCTION 01)............................. 4-1

4.1.2 SYSTEM PARAMETER LIST (FUNCTION 02)................................ 4-2

4.1.3 ERROR CODE DISPLAY (FUNCTION 03)...................................... 4-2

4.1.4 SERVICE MONITOR REPORT (FUNCTION 04)............................. 4-2

4.1.5 GROUP 3 PROTOCOL DUMP (FUNCTION 05) ............................. 4-2

4.1.6 PC PROTOCOL DUMP (FUNCTION 05) ........................................ 4-3

4.1.7 RAM DISPLAY/REWRITE (FUNCTION 06)..................................... 4-3

4.1.8 RAM DUMP (FUNCTION 06)........................................................... 4-3

4.1.9 COUNTER DISPLAY/REWRITE (FUNCTION 07)........................... 4-4

4.1.10 NCU PARAMETERS (FUNCTION 08)........................................... 4-5

4.1.11 MODEM TEST (FUNCTION 08).................................................... 4-5

4.1.12 DTMF TONE TEST (FUNCTION 08)............................................. 4-5

4.1.13 V.8 MODEM TEST (FUNCTION 08).............................................. 4-6

4.1.14 V.34 MODEM TEST (FUNCTION 08)............................................ 4-6

4.1.15 RINGER TEST (FUNCTION 08).................................................... 4-7

4.1.16 OPERATION PANEL TEST (FUNCTION 09)................................ 4-7

4.1.17 LED ARRAY TEST (FUNCTION 10).............................................. 4-7

4.1.18 ADF TEST (FUNCTION 10)........................................................... 4-8

4.1.19 PRINTER TEST PATTERNS (FUNCTION 11).............................. 4-8

4.1.20 PRINTER MECHANISM TEST - FREE RUN (FUNCTION 11)...... 4-8

4.1.21 RAM TESTS (FUNCTION 12)........................................................ 4-9

4.1.22 SOFTWARE DOWNLOAD (FUNCTION 12).................................. 4-9

4.1.23 SOFTWARE UPLOAD (FUNCTION 12)...................................... 4-10

4.1.24 SRAM DATA DOWNLOAD (FUNCTION 12)............................... 4-11

4.1.25 SERVICE STATION FAX NUMBER (FUNCTION 13) ................. 4-12

4.1.26 SERIAL NUMBER (FUNCTION 14)............................................. 4-12

4.2 BIT SWITCHES...................................................................................... 4-13

4.2.1 SYSTEM SWITCHES.................................................................... 4-13

4.2.2 SCANNER SWITCHES ................................................................. 4-21

4.2.3 PRINTER SWITCHES................................................................... 4-22

4.2.4 COMMUNICATION SWITCHES.................................................... 4-25

4.2.5 G3 SWITCHES.............................................................................. 4-30

4.3 NCU PARAMETERS .............................................................................. 4-37

4.4 DEDICATED TRANSMISSION PARAMETERS..................................... 4-46

4.4.1 PROGRAMMING PROCEDURE................................................... 4-46

4.4.2 PARAMETERS.............................................................................. 4-47

4.5 SERVICE RAM ADDRESSES................................................................ 4-49

ii

5. PREVENTIVE MAINTENANCE...................................................5-1

5.1 SPECIAL TOOLS AND LUBRICANTS ..................................................... 5-1

5.2 PM TABLE................................................................................................ 5-1

6. REPLACEMENT AND ADJUSTMENT........................................6-1

6.1 EXTERIOR ............................................................................................... 6-1

6.1.1 TOP COVER.................................................................................... 6-1

6.1.2 OPERATION PANEL....................................................................... 6-2

6.2 ADF........................................................................................................... 6-2

6.2.1 FEED ROLLER ASSEMBLY............................................................ 6-2

6.2.2 SEPARATION ROLLER .................................................................. 6-3

6.3 SCANNER................................................................................................ 6-3

6.3.1 SCANNER UNIT DISASSEMBLY.................................................... 6-3

6.3.2 SCANNER MOTOR......................................................................... 6-4

6.3.3 R1/R2 ROLLERS............................................................................. 6-5

6.3.4 CONTACT IMAGE SENSOR ASSEMBLY....................................... 6-5

6.3.5 SCANNER UNIT.............................................................................. 6-6

6.4 LASER PRINTING COMPONENTS......................................................... 6-7

6.4.1 LASER UNIT.................................................................................... 6-7

6.5 DEVELOPMENT....................................................................................... 6-9

6.5.1 TRANSFER ROLLER...................................................................... 6-9

6.6 FUSING.................................................................................................. 6-10

6.6.1 FUSING UNIT................................................................................ 6-10

6.6.2 THERMISTOR............................................................................... 6-11

6.6.3 HOT ROLLER STRIPPERS........................................................... 6-11

6.6.4 FUSING LAMP AND HOT ROLLER.............................................. 6-12

6.6.5 PRESSURE ROLLER.................................................................... 6-13

6.6.6 THERMOSTAT AND THERMOFUSE............................................ 6-13

6.7 PCBS...................................................................................................... 6-14

6.7.1 NCU............................................................................................... 6-14

6.7.2 PSU ............................................................................................... 6-14

6.7.3 POWER PACK............................................................................... 6-15

6.7.4 FCU ............................................................................................... 6-15

6.8 PAPER FEED......................................................................................... 6-16

6.8.1 SEPARATION PAD ....................................................................... 6-16

6.8.2 PAPER FEED UNIT ASSEMBLY AND PAPER FEED MOTOR.... 6-17

6.8.3 PAPER END SENSOR AND REGISTRATION SENSOR.............. 6-18

6.8.4 PAPER FEED ROLLER/CLUTCH AND TRANSPORT ROLLER... 6-18

6.9 OTHERS................................................................................................. 6-19

6.9.1 INTERLOCK SWITCHES .............................................................. 6-19

6.9.2 MAIN MOTOR................................................................................ 6-20

6.9.3 REGISTRATION ROLLER............................................................. 6-21

6.9.4 TONER END SENSOR.................................................................. 6-22

6.10 PAPER FEED UNIT (OPTIONAL)........................................................ 6-23

6.10.1 TRANSPORT ROLLER ...............................................................6-23

6.10.2 PAPER FEED ROLLER AND PAPER FEED CLUTCH............... 6-23

6.10.3 CONNECTOR.............................................................................. 6-24

6.11 IMAGE ADJUSTMENT......................................................................... 6-25

iii

6.11.1 OVERVIEW ................................................................................. 6-25

6.11.2 SCANNER PARAMETERS.......................................................... 6-26

6.11.3 PRINTER PARAMETERS............................................................ 6-27

6.11.4 SCANNER VIDEO PROCESSING PARAMETERS..................... 6-29

7. TROUBLESHOOTING.................................................................7-1

7.1 COPY QUALITY TROUBLESHOOTING.................................................. 7-1

7.1.1 BLANK COPIES............................................................................... 7-2

7.1.2 BLACK COPIES............................................................................... 7-2

7.1.3 DIRTY BACKGROUND ................................................................... 7-3

7.1.4 UNEVEN IMAGE DENSITY............................................................. 7-4

7.1.5 VERTICAL BLACK LINES............................................................... 7-5

7.1.6 HORIZONTAL BLACK LINES.......................................................... 7-6

7.1.7 VERTICAL WHITE LINES ............................................................... 7-7

7.1.8 HORIZONTAL WHITE LINES.......................................................... 7-8

7.1.9 BLACK DOTS/SPOTS..................................................................... 7-9

7.1.10 WHITE SPOTS IN BLACK IMAGE AREAS ................................. 7-10

7.1.11 FAINT COPIES............................................................................ 7-11

7.1.12 VERTICAL BLACK BAND............................................................ 7-13

7.1.13 UNFUSED COPIES..................................................................... 7-14

7.1.14 GHOST IMAGE............................................................................ 7-14

7.1.15 TONER ON THE BACK OF THE PRINTER PAPER................... 7-15

7.1.16 INCORRECTLY ALIGNED OUTPUT (DATA SHIFTED TO

THE RIGHT OR LEFT)................................................................ 7-15

7.1.17 INCORRECTLY ALIGNED OUTPUT (IMAGE SHIFTED

VERTICALLY)/REDUCED IMAGE .............................................. 7-16

7.2 MECHANICAL PROBLEMS ................................................................... 7-17

7.2.1 ADF/SCANNER............................................................................. 7-17

7.2.2 PRINTER....................................................................................... 7-20

7.3 SERVICE CALL CONDITIONS............................................................... 7-24

7.4 ERROR CODES..................................................................................... 7-26

7.5 ELECTRICAL COMPONENT DEFECTS................................................ 7-34

7.5.1 DEFECTIVE SENSOR TABLE...................................................... 7-34

7.5.2 BLOWN FUSE TABLE................................................................... 7-34

iv

30 November, 1999 SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1 SPECIFICATIONS

Type

Desktop transceiver

Circuit

PSTN, PABX

Connection

Direct couple

Document Size
Length:

105 - 364 mm
Up to 1.2 m, manually assisted

Width:

148 - 257 mm

Thickness:

0.05 to 0.2 mm
(equivalent to 50 - 80 g/m

Document Feed

Automatic feed, face down

ADF Capacity

30 sheets (using A4 size 70 g/m2 paper)
15 sheets (using B4 size 70 g/m2 paper)

Scanning Method

Contact image sensor, with xenon lamp

Maximum Scan Width

256 mm ± 0.25%
(Effective scan width: 250 mm)

Scan Resolutions
Main scan:

8 dots/mm [203 dpi]

Sub scan:

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

Memory Capacity
ECM:

128 Kbytes

SAF:

Standard: 512 KB (40 pages/ITU-T #1)
With 1 MB option: 120 pages
With 2 MB option: 200 pages

2

)

Compression

MH, MR, MMR, and SSC
SAF storage for memory TX: MMR
and/or raw data

Protocol

Group 3 with ECM

Modulation

V.34, V.33 (Ricoh mode only),
V.17 (TCM), V.29 (QAM), V.27ter
(PHM), V.21 (FM)

Data Rate (BPS)

33,600/31,200/28,800/26,400/24,000/
21,600/19,200/16,800/14,400/12,000/
9600/7200/4800/2400

I/O Rate

With ECM: 0 ms/line
Without ECM: 2.5, 5, 10, 20, or 40
ms/line

Transmission Time

3 seconds at 28,800 bps: Measured
with G3 ECM using memory for an ITU­T #1 test document (Slerexe letter) at
standard resolution

Printing System

Laser printing, plain paper, dry toner

Printing Time

6 ppm for letter-size paper

Paper Size and Capacity
Standard Cassette:

250 sheets

Letter, Legal, A4, A5 sideways, F4

Paper Feed Unit (Optional):

500 sheets: Letter, Legal, A4,
A5 sideways, F4

Maximum Printing Width

208 mm [8.1 ins]

Print Resolutions

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

Overall

Information

1-1

SPECIFICATIONS 30 November, 1999

Power Supply

110 ± 20 Vac, 60 ± 1 Hz

Power Consumption (Max)
Standby:
Transmit:
Receive:
Copying

Minimum 2 W; Normal 10 W

31 W

889 W

: 898 W

Operating Environment
Temperature:
Humidity:

15 - 25 °C

30 - 70 %Rh

Dimensions (W x D x H)

399 x 730 x 323 mm
Including trays (Maximum dimensions)

Weight

Approx. 12.5 kg [27.6 lbs.]
Including cartridge and trays.

1-2

30 November, 1999 FEATURES

1.2 FEATURES

KEY: O = Used, X = Not Used,
A = With optional memory only
B = With optional paper feed unit only

Equipment

ADF O
Book scan X
Bypass feed: 1 sheet X
Optional cassette: 100

sheets
Optional cassette: Universal O
Optional paper feed unit B
Cabinet X
Mechanical counter X
Cutter X
Handset X
Hard disk X
Manual feed mechanism X
Marker (Stamp) X
Monitor speaker O
Optional memory O
Optional printer interface X

Video Processing Features

Automatic image density
selection

Contrast O
Halftone (Basic & Error

diffusion)
JBIG compression X
MTF O
Reduction before TX X
Scanning resolution O
Smoothing to 16 x 15.4 l/mm O

Communication Features - Auto

AI short protocol O
Automatic fallback O
Automatic redialing O
Confidential reception O
Dual access O

O

Communication Features - Auto

Resolutions available for
reception
Fine
Super fine

Substitute reception O
V.34 communication O

Communication Features -

X

Action as a transfer
broadcaster

AI Redial (last ten numbers) O
Answering machine interface O
Authorized Reception O
Auto dialing (pulse or DTMF) O
Auto document X
Automatic voice message X
Batch transmission (max 35

files)
Broadcasting O
Chain dialing O
Communication result

display
Confidential ID override X

X

Confidential transmission X
Direct fax number entry O
Economy transmission X
Fax on demand X
Forwarding O
Groups (5 groups) O
Hold X
ID transmission X
Immediate redialing O
Immediate transmission O
ISDN X
Keystroke programs O
Memory transmission O
Multi-step transfer X
OMR X
On hook dial O
Ordering toner X
Page count O
Page separation mark O

User Selectable

X
X

X

O

X

Overall

Information

1-3

FEATURES 30 November, 1999

Communication Features -

User Selectable

Parallel memory
transmission

Personal codes O
Personal codes with conf. ID O
Partial image area scanning X
Polling reception O
Polling transmission X
Polling tx file lifetime in the

SAF
PWD (tx only) O
Quick dial (30 stations) O
Reception modes (Fax, Tel,

O

Auto)
Remote control features X
Remote transfer X
Restricted access X
Secured polling reception X
Secured polling reception

with Stored ID override
Send later O
SEP (tx only) O
SID (tx only) O
Silent ringing detection X
Specified Image area X
Speed dial (50 stations) O
SUB (tx only) O
Telephone directory O
Tonal signal transmission O
Transfer request X
Transmission deadline

(TRD)
Turnaround polling X
Two-step transfer X
Two in one X
Voice request (immediate TX

only)

Communication Features -

Service Selectable

AI short protocol O
Auto-reduction override

O

option
Busy tone detection O
Cable equalizer O
Closed network (TX and RX) X

Communication Features -

Service Selectable

X

Continuous polling reception X
Dedicated TX parameters O
ECM O
EFC X
Inch-mm conversion X
Page retransmissi o n ti me s O
Protection against bad

X

connections

O

Short preamble X

Other User Features

Area code prefix X
Automatic service call

Service

Center mark O
Checkered mark X
Clearing a memory file O

X

Clearing a polling file O
Clock O
Confidential ID O
Copy mode O
Copy mode restriction X
Counters O
Daylight saving time O
Destination check X
Direct entry of names O
Energy saver (Night timer

O

and standby mode)
File retention time X

X

File retransmission X
Function programs O
ID code X
Label insertion ("From xxx") O
Language selection O

X

LCD contrast control

X

Memory lock X
Modifying a memory file X
Multi-sort document

X

reception
Multi-copy mode (up to 99) O
Own telephone number O
PC scanner X
PC fax X
PC print X
Print density control X

1-4

30 November, 1999 FEATURES

Other User Features

Printing a memory file O
Quick dial label printing O
RDS on/off O
Reception mode switching

X

timer
Reception time printing X
Remaining memory indicator O
Remote ID X
Reverse order printing O
RTI, TTI, CSI O
Service report transmission X
Speaker volume control O
Specified cassette selection B
Substitute reception on/off O
Telephone line type O
Toner saving mode X
User function keys O
User parameters O
Wild cards O

Reports - Auto ma tic

Charge control report X
Communication failure report O
Communication result report O
Confidential file report O
Error report O
File clear report X
File reserve report X
Journal O
Power failure report O
Toner cassette order form X
Transfer result report X
Transmission result report O

Reports – User-initiated

Charge control report X
File list O
Group list O
Journal O
Personal code list O
Program list O
Programmed special

O

numbers list
Quick dial / User function list O

Reports – User-initiated

Speed dial list O
Transmission status report X
User parameter list O

Service Mode Features

Back-to-back test O
Bit switch programming O
Book mode test X
Buzzer test O
Cable equalizer O
Comm. Parameter display O
Counter check O
Country code O
DTMF tone test O
Echo countermeasure O
Effective term of service calls O
Error code display O
Excessive jam alarm O
File transfer (all files) O
LCD contrast adjustment X
Line error mark O
Memory file printout (all files) O
Modem software download X
Modem test O
NCU parameters O
Operation panel test O
Periodic service call O
PM call O
Printer mechanism test O
Printer test patterns O
Programmable attenuation X
Protocol dump list O
RAM display/rewrite O
RAM dump O
RAM test O
RDS 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
Software upload/download O
SRAM data upload/download O

Overall

Information

1-5

FEATURES 30 November, 1999

Service Mode Features

System parameter list O
Technical data on the

Journal
Thermal head parameters X

O

Memory Files

Maximum number of files: 100
Maximum number of stations/file: 100
Maximum number of stations: 200

1-6

30 November, 1999 COMPONENT LAYOUT

1.3 COMPONENT LAYOUT

1.3.1 MECHANICAL COMPONENTS

1 52 3 4 6 8

18
17

7

Overall

Information

16

H545V501.WMF

12

No Name Description

1 R2 Roller Feeds the document through the scanner.
2 R1 Roller Feeds the document through the scanner.
3 Separation Roller Allows one page into the scanner.
4 Document Feed Belt Feeds the document into the scanner.
5 Pick-up Roller

6 Pressure Plate Applies pressure against the pick-up roller.
7 All-in-One Cartridge Consists of the toner cartridge, cleaning unit, used

8 Laser Unit

9 Paper Feed Roller

10 Separation Pad Allows one sheet of paper into the printer.
11 Registration Roller Car r ies out the registration process.
12 OPC Drum The latent image is written to this organic

Picks up document pages from the document table
one at a time.

toner tank, charge brush roller, application roller,
development roller and OPC drum.

Consists of the LDDR (Laser Diode Driver), focusing
lens, hexagonal mirror motor, and other laser optic
components.

Picks up the top sheet of paper from the stack in the
cassette, and feeds it into the printer.

photoconductor drum.

11131415

9

10

1-7

COMPONENT LAYOUT 30 November, 1999

No Name Description

13 Transfer Roller
14 Hot Roller Heat from this roller fuses the toner to the copy paper.

15 Fusing Pressure Roller Applies pressure to the paper during the fusing
16 Paper Feed-out Rollers Feed the paper out of the printer.

17 Hot Roller Strippers Take the paper off the hot roller after fusing.
18 Cleaning Pad Cleans up and spreads silicone oil on the surface of

Applies a charge to the paper to pull the toner off the
drum and onto the copy paper.

process.

the hot roller.

1-8

30 November, 1999 COMPONENT LAYOUT

1.3.2 ELECTRICAL COMPONENTS

22

21

20

19

1 2 3 4

H545V502.WMF

141618

17

15

23

5

6

Overall

Information

7

8
9
10
11

12

13

26

27

24

25

H545V509.WMF

1-9

COMPONENT LAYOUT 30 November, 1999

1. PCBs

No Name Description

CIS (Contact Image

2

Sensor)

5 LDDR (Laser Diode

Driver)

23 NCU (Network Control

Unit)

24 OPU (Operation Panel

Unit)

25 FCU (Facsimile Control

Unit)

26 Power Pack
27 PSU

(Power Supply Unit)

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

This board drives the laser diode.
This board contains relays and switches for interfacing

the machine with the network and the handset.
This board controls the operation panel.

This board controls the machine. It contains the main
CPU, flash ROM, system RAM, etc.

Supplies high voltage to the charge brush roller,
transfer roller and development rollers.

This board supplies power to the machine, and
switches the fusing lamp on/off.

2. Motors

No Name Description

4 Polygon Mirror Motor

7 Main Motor This stepper motor drives the All-in-One cartridge and
11 Paper Feed Motor This stepper motor drives the registration roller and
15 Scanner Motor This stepper motor drives the scanner.

21 Cooling Fan Motor Cools the interior of the machine.

This high-speed dc motor drives the hexagonal mirror
in the laser printer optics.

the fusing unit.
the paper feed mechanisms in the cassettes.

3. Sensors

No Name Description

1 Document Sensor Detects the presence of a document in the feeder.
3 Paper End Sensor Detects when the paper in the cassette has run out.
6 Paper Edge Sensor Detects when the paper has passed the paper feed

components.

8 Rear Upper Cover Switch Detects whether the rear upper cover is open or

closed.

9 Rear Lower Cover Switch Detects whether the rear lower cover is open or

closed.
16 Registration Sensor Detects when paper reaches the registration roller.
19 Fusing Exit Sensor Detects when the paper feeds out of the printer.
22 Toner End Sensor Detects when the toner has run out.

1-10

30 November, 1999 COMPONENT LAYOUT

4. Interlock Switches

No Name Description

Interlock Switches

12
13

If the fusing unit cover and/or top cover are open,
these switches interrupt the +5VLD power supply for
the laser diode and the +24VD power supply for the
power pack, motors, and other components.

5. Others

No Name Description

10 Paper Feed Clutch Transfers drive from the paper feed motor to the paper

feed roller.
14 Monitor Speaker Allows the user to hear the telephone line condition.
17 Fusing Lamp The heat from this lamp fuses the toner to the paper.
18 Thermistor Monitors the temperature on the hot roller surface.
20 Thermostat Interrupts the ac power supply for the fusing lamp if

the thermostat temperature exceeds 400°C.

Overall

Information

1-11

COMPONENT LAYOUT 30 November, 1999

6. Optional Paper Feed Unit

1

2

5

H545V504.WMF

4

No Name Description

1 Paper End Sensor

(Paper Feed Unit)
Paper Feed Roller

2

(Paper Feed Unit)

3 Paper Feed Clutch

(Paper Feed Unit)
Cassette Switch

4

(Paper Feed Unit)

5 Rear Cover Switch

(Paper Feed Unit)

This detects when the paper in the cassette has run

out.

Picks up the top sheet of paper from the stack in the

cassette, and feeds it into the printer.

Transfers drive from the paper feed motor in the

mainframe to the paper feed roller in the cassette.

This detects whether the cassette is installed or not.

This detects whether the rear cover is open or close.

3

1-12

30 November, 1999 OVERALL MACHINE CONTROL

1.4 OVERALL MACHINE CONTROL

IC Card

Interface

SYSTEM BUS

Printer

Scanner

H545V530.WMF

FCU

DRAM

SRAM

AFE

NCU

Flash
ROM

Modem

Energy

Saver

CPU

Control

FCIP2

Data &
Control

Operation

Panel

The FCU (Facsimile Control Unit) contains most of the logical components for
overall system control.

There are two CPUs in the machine: the main CPU (FCIP2) and the energy saver
CPU. Both of these are on the FCU. In energy saver mode, the main CPU switches
off and the energy saver CPU takes over.

Overall

Information

1-13

VIDEO DATA PATH 30 November, 1999

1.5 VIDEO DATA PATH

1.5.1 TRANSMISSION

Original

Contact Image Sensor Assembly

LED

Image Sensor

Amplifier

Video

Processing

Memory

DATA/ADDRESS BUS

Line Buffer

/FIFO

Memory

DIP

FCIP2

DCR

DRAM

ECM/SAF

Memory

MDM Amplifier

Attenuator

HIC

NCU

To the network

H545V506.WMF

Immediate Transmission:

Scanned data from the contact image sensor passes to the DIP block in the FCIP2.
After analog/digital video processing, the DCR block compresses the data for
transmission. The compressed data then passes either to the FIFO memory or to
the ECM memory before entering the telephone line through the modem.

FCU

Memory Transmission:

First, the scanned data is stored in the SAF memory after compression in the DCR
block. At the time of transmission, the DCR block decompresses the data from the
SAF memory, then compresses it again after handshaking with the other terminal is
complete. The compressed data then passes either to the FIFO memory or to the
ECM memory, before entering the telephone line through the modem.

1-14

30 November, 1999 VIDEO DATA PATH

1.5.2 RECEPTION

From the Network

NCU

HIC

Amplifier

MDM

FCIP2

DCR LIF

MDM: Modem
DCR: Data Compression and Reduction
LIF: Laser Interface

FCU

Overall

Information

Data/ Address Bus

LDDR

Line Buffer

/FIFO

Memory

ECM/SAF

Memory

DRAM

Page

Memory

Copy Paper

H545V507.WMF

Data from the line passes to the modem through the NCU and hybrid integra ted
circuit (HIC). After the modem demodulates the data, it passes through either the
FIFO or the ECM memory to the DCR block, which decompresses it into raster
image data. At the same time, the compressed data passes to the SAF memory as
a backup in case of mechanical problems during printing (this is known as
substitute reception).

The raster image data then passes to the page memory for printing. After a page of
data has been stored in the page memory, the data is sent to the LDDR through
the LIF block.

1-15

VIDEO DATA PATH 30 November, 1999

1.5.3 COPYING

Original

Contact Image Sensor Assembly

Video

Processing

Memory

Line Buffer

/FIFO

Memory

LED

Amplifier

FCIP2

DCR LIF

DATA/ADDRESS BUS

ECM/SAF

Memory

DRAM

Image Sensor

DIP

Memory

Page

FCU

LDDR

Copy Paper

H545V508.WMF

Single copy

The scanned data passes to the page memory after video processing in the DIP
block. After a page of data has been stored in the page memory, the data is sent to
the LDDR through the LIF block.

Multi-page copy

The scanned data passes to the SAF memory after video processing (DIP) and
compression (DCR). After a page of data has been stored in the SAF memory, the
data passes to the DCR block again for decomp ression, and then it passes to the
page memory for printing.

1-16

30 November, 1999 POWER DISTRIBUTION

1.6 POWER DISTRIBUTION

1.6.1 DISTRIBUTION DIAGRAM

Paper Feed

AC

Main

Power

AC Switching

Circuit

Fusing Lamp

ON/OFF

Switching

Circuit

AC115V or

Fusing Lamp

230V

Main Switch

PSU

24VIN

+24V

-9V

24VM

24VD

IC

Card

+5VD

+5V

+5VP

DC-DC

Converter

DC-DC

Converter

Interlock

Switch

Unit

+5V

Polygon

Motor

+24VM

+24VM

-9V

+12V

+5V

+5VE

+5VLD+5V

+5VLD

+24V

+5V

LDDR Image Sensor

Main

Motor

+24VMM

DC-DC

Converter

+5VEE

NCU

+5V

Paper Feed

Clutch

+24VMS

+24VM

-9VV

+5VV

FCU

+24VMM

+24VM

+24VPP

+5VT

+5V

+5VOPP

+5VE

+24VMM

+24V

Paper Feed

Motor

Fusing Fan

Power Pack

Thermistor

Sensors

Operation Panel

Scanner Motor

Toner End

Sensor

+5V

-9V

Overall

Information

H545V531.WMF

The PSU supplies +24V dc power to the FCU. The FCU converts the +24V into the
following supplies:

+5V Normally on when the main switch is.

+5VE Detects an activation signal from the NCU, document feeder, or operation panel

when the machine is in energy saving mode.

+5VT For the thermistor.

+5VLD

+5VV This is a more stable power supply than +5V. It is used for the contact image

+5VD Supplies back up power for the DRAM and the optional IC card on the FCU. It can

+5VBAT Supplies back up power to the system RAM on the FCU to back up the

+24V Normally on when the main switch is.

+24VD This is interrupted if the fusing unit cover interlock switch opens.

+24VIN Supplies +24V to the fusing unit on/off switching circuit. It is interrupted if the fusing

+24VMM For the scanner, paper feed, and main motors.

+24VPP For the power pack.

-9V For the image sensor.

+5VP For the optional IC card.

Supplies the laser diode. It is interrupted if the fusing unit cover interlock switch
opens.

sensor.

back up stored data for one hour after the power is switched off. A rechargeable
battery on the FCU generates +5VD.

programmed data. A lithium battery generates +5VBAT.

unit cover interlock switch opens.

1-17

POWER DISTRIBUTION 30 November, 1999

1.6.2 MEMORY BACK-UP CIRCUIT

FCU

+5V

POWERS

+5VD

5RTCCS

FCIP2

1VDET

1SAFFG

DRAM

[A]

IC Card

+

-

Switching

Circuit

+5VBAT

System

RAM

+5VBAT+5VD

H545V513.WMF

[B]

+5VE

DC/DC

Converter

+5V

Q29

The +5VBAT supply from the lithium battery [A] backs up the system RAM, which
contains system parameters, programmed telephone numbers, and the real time
clock in the main CPU. The 5RTCCS signal tells the main CPU whether the back­up power (+5VBAT) is coming from the battery or from the +5V power supply.

A rechargeable lithium battery [B] and the DC/DC converter on the FCU back up
the DRAM (SAF memory) for one hour, if there is data in the SAF memory and the
power is switched off. While the main power is on, the +5VE supply recharges the
battery. The battery recharges in 5 or 6 days.

The battery [B] generates about 3 volts (max. 3.2 volts). The DC/DC converter
raises this voltage to 5 volts so it can be used as the +5VD supply for the SAF
backup. The CPU monitors the voltage of the +5VD supply with the 1VDET signal.
When the ba ttery has run down, and the voltage is lower than 4.4 volts, the CPU
stops the DC/DC converter by dropping 1SAFFG to low and the machine stops
backing up the memory.

NOTE:

There is no battery switch for the battery [B].

1-18

30 November, 1999 SCANNER

2. DETAILED SECTION DESCRIPTIONS

2.1 SCANNER

2.1.1 MECHANISMS

1. Document Detection

[A]

[B]

H545D002.WMF

The document sensor [A] detects a document when it is placed in the ADF.
The document width sensor [B] detects if the document is A4 or B4 width.

2. Pick-up and Separation and Drive Mechanism

[A]

[B]

[D]

[C]

Detailed

Descriptions

[F]

[G]

[E]

H545D502.WMF

The pressure plate [A] aligns the leading edges of the pages of the document.
When the machine starts feeding the document, the mechanical clutch in the ADF
roller unit lifts up the pick-up rollers [B] to feed the bottom sheet of the document.
Then, the feed belt [C] feeds the sheet into the scanner.
The separation roller [D] prevents the feed belt from feeding more than one sheet
at a time.

The scanner motor [E] drives the pick-up rollers [B], feed belt [C], R1 roller [F], and
R2 roller [G].

Cross Reference

ADF mechanical clutch mechanism: Group 3 Facsimile Manual, page 2-2-8.
Maximum document length: Scanner Switch 00, bits 2 and 3.

2-1

SCANNER 30 November, 1999

4. Image Scanning

[A]

[B]

[C]

H545D503.WMF

The image sensor [B] consists of a row of photosensitive elements (B4 width x 8
dots/mm). The document reflects light from the LED array and the rod lens array
focuses it onto the image sensor. Because of the short optical path inside the CIS,
the focal depth is much shorter than for a CCD type scanner. Consequently, the
spring plates [C] push the white roller [A] so that the document surface always
touches the exposure glass at the scan line.

The image sensor assembly is factory adjusted, so it does not require adjustment
or replacement in the field.

The image sensor scans the original one line at a time, and outputs an analog
signal for each line. The voltage from each element depends on the intensity of the
light reflected from the original onto the element; the light intensity depends on the
darkness of the document area it was reflected from.

The white roller [A] must be kept clean, because the machine scans it every page
to calibrate the white level (auto shading).

2-2

30 November, 1999 SCANNER

2.1.2 JAM CONDITIONS

The main CPU detects a document jam if one of the following conditions occurs.

Jam Condition Description

Non-feed The feed mechanism attempts to feed the

paper once every second for a maximum of
6 seconds. If the scan line sensor does not
detect the document within 6 seconds, the
monitor displays an error message.

Incorrect sensor
conditions

Maximum document length
exceeded

Cover open While the ADF is working, the ADF cover is
Error during feed-out

The scan line sensor turns on while the
document sensor is off.

The scan line sensor does not turn off after
the maximum document length has fed
through it. This occurs after 11 seconds at
standard resolution for memory TX; 23
seconds at standard resolution for
immediate TX or detail resolution; or 46
seconds at fine resolution (all these times
are for a 1.2-m long document).

opened.
The scanner motor reverses when the final

page of the document feeds out of the
scanner and/or when removing a jammed
document. This error occurs when placing a
document into the feeder while the motor is
rotating.

Error
Code

1-00

Detailed

Descriptions

1-01

No error

code

No error

code

2-3

PRINTING 30 November, 1999

2.2 PRINTING

2.2.1 PRINTING PROCESS - OVERVIEW

-1.2kV

-200V

µµµµ

A

+4.3

-650V
(0V)

H545D521.WMF

This machine uses a “write-to-black” system, with negative toner.

•

The charge-brush roller gives the drum surface an approximate negative

charge of -750 V.

•

The exposed area on the drum drops to about -200 V.

•

The development roller carries toner to the latent image on the drum surface.

The bias voltages during printing:
Toner application roller : -650 V
Development roller: -400 V

•

The transfer roller pulls the toner from the drum onto the paper.

A constant current of +4.3 µA is applied. The anti-static brush helps to
separate the paper from the drum.

•

The cleaning blade removes any toner remaining on the drum after the image

transfers to the paper.

•

This machine does not use quenching lamp.

2-4

30 November, 1999 PRINTING

2.2.2 OPC DRUM

[C]
[D]

[B]

[A]

[E]

H545D504.WMF

The cartridge contains an organic photo-conductor drum [A]. The diameter of the
drum is 24 mm. The main motor [B] drives it through a gear train. The same gear
train also drives the toner application roller [C], development roller [D], and transfer
roller [E].

The drum, development roller, fresh and used toner tanks, and cleaning
mechanism are all included in the cartridge, which is known as the “All-in-One”
cartridge.

Detailed

Descriptions

2.2.3 CHARGE

[A]

H545D517.WMF

The cartridge contains a charge brush roller [A]. The diameter of the roller is 12
mm. The charge brush roller does not generate ozone. The power pack applies a
constant voltage of about –1.2 kV. The charge brush roller gives the drum surface
a negative charge (-750V).

2-5

PRINTING 30 November, 1999

2.2.4 LASER EXPOSURE

Overview

[C]

[E]

[A]

[B]

H545D505.WMF

•

The focusing lens [A] is a double toroidal lens that has a barrel toroidal

[D]

[F]

surface on both sides.

•

The shield glass [B] prevents toner and dust from entering the laser optics

area.

•

The speed of the hexagonal mirror motor [C] is 5793.88 rpm

(16 x 15.4 dots/mm).

•

The strength of the beam emitted from the LD unit [D] is 0.2 mW with a

wavelength of 780 nm. The photo transistor [E] inside the LD unit
synchronizes the laser main scan.

•

The mirror [F] reflects the laser beam onto the drum.

The charge on the exposed areas of the drum drops to about -200V while non­exposed areas remain at around -750V.

As a mechanical safety feature, a shutter slides to block the laser beam path
whenever the upper unit is opened.

Cross Reference

Group 3 Facsimile Manual: section 4-3-3

2-6

30 November, 1999 PRINTING

Block Diagram

LDDR

Laser

Synch

Detector

Circuit

Laser
Diode

Controller

Laser

Diode

Polygon

Mirror

Drive Unit

Laser Synch
Detector

26-4

LD Enable

DATA

Control

Mirror Motor Lock

Mirror Motor Enable

9-2
9-6
9-3

10-4

10-3

FCU

FCIP2

LIF

EXIO

H545D506.WMF

The LIF (Laser Interface) circuit inside the FCIP2 monitors and controls the laser
diode timing (FCU CN9-3), and transfers data for printing to the laser diode (FCU
CN9-6).

Detailed

Descriptions

Cross Reference

Group 3 Facsimile Manual: page 4-3-13

Error Conditions

LD Failure:

The machine detects LD failure when it does not detect the laser synchronization
signal within 10 ms of the LD ready signal. When this occurs, the machine warns
the customer with the Call Service indicator (error code 9-20).

Mirror Motor Failure:

The machine detects a mirror motor error when the FCU CN10-4 signal does not
go low within 10 seconds of the hexagonal mirror motor turning on.
The machine also detects a mirror motor error when the FCU CN10-4 signal goes
back to high for 3 seconds or more during mirror motor operation. When either of
these errors occurs, the machine warns the customer with the Call Service
indicator (error code 9-23).

2-7

PRINTING 30 November, 1999

2.2.5 TONER SUPPLY

[C]

[A]

[B]

H545D519.WMF

This machine uses mono-comp on ent ton er , comp osed of resin and ferrite. The
toner mixing bar [A] stirs and carries toner to the toner application roller [B]. The
toner application roller supplies toner to the development roller [C].

The main motor drives the toner supply mechanism through a gear train.
Since the toner tank and the development unit is composed in one unit, initial toner

supply mode is not required for this machine.

Cartridge Detection

This machine does not have toner cassette detection mechanism. It only detects
output from the toner end sensor.

At the following times, the toner end sensor detects whether a cartridge is installed
in the machine.

•

At power-up.

•

When the mach ine comes back to normal mode from the level 2 Energy

Saver Mode.

•

After opening and then closing the cover.

2-8

30 November, 1999 PRINTING



Toner End Detection

[A]

H545D516.WMF

The toner end sensor [A] below the toner tank detects toner near-end.
While the main motor rotates, the machine detects toner end by the voltage output

from the toner end sensor. The voltage from the sensor is close to 5V when the
toner tank is full and decreases when the toner is almost used up.

Detailed

Descriptions

+5V

FCU

FCIP2

H545D507.WMF



Toner Tank

Toner End

Sensor

Toner near-end condition:

+24V

13-1

13-2

When the cpu detects a low output (below a certain
threshold) from the toner end sensor for a few seconds, the cpu starts to blink the
Add Toner indicator (LED). This is the toner near-end condition.

Toner end condition:

After toner near-end is detected, the machine can print 100

more sheets, then the cpu disables printing (this is the toner end condition).
The machine clears the toner near-end or toner end condition when the power is

switched off and back on or when the cover is opened and closed, if the output
from the toner end sensor goes back high again.

NOTE:

If the toner end sensor is accidentally disconnected, the machine cannot
detect if the cartridge is installed. The machine assumes that there is still
toner, even if the toner tank is empty.

2-9

PRINTING 30 November, 1999

2.2.6 DEVELOPMENT

[C][D]

[A]

[B]

[E]

H545D519.WMF

Overview

The toner supply bar [A] stirs and carries toner to the toner application roller [B].
The toner application roller is a sponge-like structure which carries toner to the
development roller [D]. As the development roller [D] turns past the toner metering
blade [C], only a thin coating of negatively charged toner particles stays adhered.
(Refer to section 4-4-2 of the Group 3 Facsimile manual.)

During printing, the power pack applies a bias voltage of -650V to the toner
application roller and another bias voltage of -400V to the development roller. The
potential difference between these two rollers carries the toner from the toner
application roller to the development roller.

The exposed area on the drum [E] is at -200V. The development roller applies
toner to the latent image areas as they turn past the drum.

The development roller is made of soft rubber so it does not damage the surface of
the drum.

2-10

30 November, 1999 PRINTING

Development Bias

[C]

[B]

[D]

[A]

H545D518.WMF

The power pack [A] applies one voltage to the toner application roller [B] and toner
metering blade [C], and a different voltage to the development roller [D].

Bias Control (During Printing)

The power pack applies a charge of -650V to the toner application roller, and

-400V to the development roller. Toner transfers from the toner application roller to
the development roller and on to the laser-exposed areas on the drum as shown
below.

Print Data

White Black

Toner

Detailed

Descriptions

GND

- 200V

- 400V

- 650V

- 750V

Drum Exposed Area

Development Roller

Toner Application Roller

Drum Surface Voltage

H545D531.WMF

2-11

PRINTING 30 November, 1999

Bias Control (After Each Page)

At the start and the end of any print process (including the cleaning mode), the
power pack applies 0V to the toner application roller, and +250V to the
development roller. This is to prevent toner from transferring to the drum.

Toner

+ 250V

0V

- 750 V

Development Roller

Toner Application Roller

Drum Surface Voltage

H545D533.WMF

Note that the voltage difference between the toner application and development
rollers is kept the same as in printing, at 250 V. This keeps the same amount of
toner on the development roller at all times during the print run.

2-12

30 November, 1999 PRINTING

Bias Control Circuit

Toner Application
Roller

Development
Roller

Transfer Roller

Power

Pack

BIASPWM

BIASCTL

Transfer H

Transfer L

11-8
11-7

11-10

11-9

GEPC

FCIP2

FCU

H545D509.WMF

The CPU controls the voltages to the toner application and development rollers
through the power pack controller (GEPC), using the BIASCTL and BIASPWM
signals as shown in the following table.

In BIASCTL Low High Low High

BIASPWM On On Off Off

Out T oner Applicat ion Roller - 650 V 0 V Off Off

Development Roller - 400 V + 250 V Off Off

Detailed

Descriptions

2-13

PRINTING 30 November, 1999

2.2.7 PAPER FEED

Overview

[B]

[A]

H545D511.WMF

The standard cassette [A] holds 250 sheets.
An optional paper feed unit, which holds up to 500 sheets, is available (only one of
these can be installed).

NOTE:

An optional multi-purpose feeder [B] is not available in the Taiwan model.

2-14

30 November, 1999 PRINTING

Paper Lift Mechanism

Standard Cassette

[A]

[C]

[B]

H545D525.WMF

After loading the paper and closing the cassette, the projection [A] pushes the slide
lock [B] off the bottom hook [C].

Once the slide lock comes off, the pressure spring lifts the bottom plate.

Optional Paper Feed Unit

[A]

[B]

Detailed

Descriptions

H545D513.WMF

After loading the paper and closing the cassette, the projection [A] pushes the lever
[B], then the springs raise the bottom plate.

2-15

PRINTING 30 November, 1999

Paper End Detection

Standard Cassette/Optional Paper Feed Unit

[A]

H545D527.WMF

When the cassette runs out of paper, the paper end sensor actuator [A] drops
through a slot in the bottom plate.

Paper End Sensor
Standard Cassette

Paper End Detector

Paper Feed Unit

FCU

25-6

31-3

Paper End

EXIO

Paper End

FCIP2

H545D700.WMF

2-16

30 November, 1999 PRINTING

Pick-up and Separation

Standard Cassette and Optional Paper Feed Unit

The pick-up and separation mechanism is a separation pad type. The separation
pad and the paper feed roller allow only one sheet to feed.

Cross Reference

Group 3 Facsimile Manual: section 4-5-4

The paper feed motor in the mainframe starts to rotate when the printer is ready for
printing.

Drive Mechanism

Standard Cassette

[B]

[C]

[A]

Detailed

Descriptions

H545D522.WMF

The paper feed motor [A] drives the paper feed mechanism. When using the
standard cassette, the paper feed motor turns clockwise, driving the paper feed
roller [B], as shown in the diagram.

The clutch [C] only allows the paper feed roller to turn once for each sheet of
paper.

2-17

PRINTING 30 November, 1999

Optional Paper Feed Unit

[A]

[B]

[C]

H545D508.WMF

The paper feed motor in the mainframe drives the paper feed mechanism thr oug h
a gear train. When the optional paper feed unit is used, the paper feed motor turns
counter-clockwise, driving the paper feed roller [A] and the transport roller [B], as
shown.

The paper feed clutch [C] in the optional paper feed unit ensures that the paper
feed roller rotates only once for each sheet of paper.

Paper Feed Priority

If there is an optional paper feed unit installed in the machine, deciding paper feed
priority is in accordance with the following rules:

•

If both cassettes contain paper of the same size, the machine uses the

optional paper feed unit.

2-18

30 November, 1999 PRINTING

2.2.8 REGISTRATION

[A]

H545D523.WMF

When the paper edge sensor [A] turns on, the machine slows the paper feed
motor.

Detailed

Descriptions

Then, a certain time after the paper’s leading edge turns on the registration sensor,
the machine starts to write the latent image to the drum.

When the paper edge sensor turns off, the machine speeds up the paper feed
motor to feed the next page and stops the laser.

2-19

PRINTING 30 November, 1999

Jam Detection

Condition Error Code

Standard Cassette

Any Paper Feed
Station

Optional Paper Feed
Unit

When the paper edge sensor does not turn on
within 2.6 seconds of the paper jam timing signal.

When the registration sensor is not turned on
within 5.5 seconds after the paper edge sensor
turns on.
When the paper edge sensor does not turn off
within 9.47 seconds after the registration sensor
turns on.

When the fusing exit sensor does not turn on
within 5.0 seconds after the registration sensor
turns on

When the registration sensor does not turn off
within 4.84 seconds after the paper edge sensor
turned off.
When the fusing exit sensor does not turn off
within 5.0 seconds after the registration sensor
turns off.

When the paper edge sensor does not turn on
within 2.6 seconds after the paper feed clutch
turns on.

When the registration sensor does not turn on
within 5.5 seconds after the paper edge sensor
turns on.
When the paper edge sensor does not turn off
within 9.47 seconds after the registration sensor
turns on.

9-07
9-84

9-08

9-09

9-50

9-51

2-20

30 November, 1999 PRINTING

2.2.9 TRANSFER AND SEPARATI ON

[A]

[B]

H545D526.WMF

Instead of using a transfer corona wire, this machine uses a transfer roller, which
touches the drum surface.

The power pack [A] applies a constant current of +4.3 µA to the transfer roller [B].
The positively biased transfer roller pulls negatively charged toner off the drum.
The curvature of the drum and the anti-static brush help the paper to drop away
from the drum.

Detailed

Descriptions

+4.3

µµµµ

A

2-21

H545D536.WMF

PRINTING 30 November, 1999

Cleaning Mode

If the paper is smaller than the printed image, or if a paper jam occurs during
printing, toner may transfer to the roller surface. To prevent this from occurring, the
transfer roller is cleaned before the next printing run.

While the machine is cleaning the transfer roller, the power pack supplies -1200V
to the transfer roller, and charges the drum to -750V. The negatively charged toner
on the transfer roller transfers back to the drum.

The machine cleans the transfer roller under the following conditions:

•

At power on (when the fusing temperature reaches half of the standby

temperature).

•

When the cover is opened and then closed during the printing process.

•

After clearing a printer jam.

The CPU controls the transfer roller voltage through the power pack using the
following signals.

In

Out Transfer Roller

THTRG On Off On Off

TLPWM Off On On Off

2.2.10 CLEANING

[B]

+ 4.3 µA

[A]

- 1200 V - Off

H545D519.WMF

The cartridge contains the cleaning unit and the used toner tank.
The cleaning blade [A] removes any toner remaining on the drum after the image is

transferred to the paper, and then brings the toner into the used toner tank [B].
There is no used toner overflow detection mechanism because the used toner tank

is large enough for the lifetime of the cartridge.

2-22

30 November, 1999 PRINTING

2.2.11 FUSING

Fusing Lamp Control

During printing, the machine keeps the fusing temperature at 170°C. If the printing
operation continues for more than 3 minutes, the machine keeps the fusing
temperature at 160°C.

When the Energy Saver Key is pressed or the energy saver timer expires, the
machine goes into an energy saver mode. In Level 2 Energy Saver Mode (2-watt
Energy Saver Mode), the fusing lamp shuts off. For Energy Saver Mode Level 1,
the user can select whether to keep the fusing lamp off or at 80°C.

Cross Reference

Energy Saver Modes: Section 2-3

Points to Note:

•

Standby temperature: Room temperature (2 watt-Energy Saver Mode), 80 °C

if users select ‘Fusing Lamp On’

•

Printing temperature: 170 °C, falling back to 160 °C after 3 minutes

If the initial lamp temperature is over 120 °C before printing, the printing
temperature is 160 °C.

•

Thermistor maximum: 250 °C (monitored by a comparator)

•

Thermostat maximum: 150 °C (the temperature of the hot roller would be

about 400 °C)

•

Thermofuse maximum: 169 °C (the temperature of the hot roller would be

about 400 °C) - The thermofuse is not used in USA models.

Detailed

Descriptions

170 ºC
160 ºC

145 ºC

80ºC

Fusing

ON

OFF

Room Temp.

5 minutes (=Power saver timer)

3 minutes

Print Start

80 ºC or

Room Temp.

H545D538.WMF

2-23

PRINTING 30 November, 1999

Fusing Control

FCU

FCIP2

+5V

Comparator

Thermistor Max

Thermistor Temp

THR SEL

1-7 1-8

PSU

+5V

24-1

Thermistor

24-2

Fusing Lamp

Thermofuse Thermostat

*

H545D662.WMF

The thermofuse is installed only in the Europe model.

During normal operation, the CPU controls the fusing lamp based on input from the
thermistor using the above circuit.

When the machine is turned on, or when it comes back from the Level 2 Energy
Saver Mode, it checks whether the thermistor circuit is intact by using the THR SEL
signal on the FCU. If the thermistor is connected properly, the machine begins
normal operation. If it is not, it generates an Auto Service Call (error code 9-22,
sub-code 09 ).

As a backup safety measure, when the temperature of the hot roller reaches
approximately 400 °C, the thermostat and/or thermofuse open.

The machine turns on the cooling fan when the fusing temperature reaches 60°C
and shuts it off when the fusing temperature drops below 60°C.

2-24

30 November, 1999 PRINTING

Fusing Unit Drive

[A]

[B]

H545D524.WMF

The main motor [A] drives the fusing unit through a gear train. The fusing exit
sensor [B] detects when the paper is fed out of the unit.

Detailed

Descriptions

After opening the upper unit, the gear train frees up making it easy to remove
jammed paper.

Jam Detection - Paper Feed Out

The machine detects a paper jam when the fusing exit sensor does not turn off
within 5.0 seconds after the registration sensor turns off (Error Code 9-09).

This is the same for all cassettes.

2-25

PRINTING 30 November, 1999

Fusing Unit Service Call Conditions

Conditions Error Code (9-22)

Standby mode

During printing

After printing

At any time

If there is a problem with the thermistor.
(Also for when the machine returns to Normal
Mode from Energy Saver Mode Level 2.)

If the machine detects that both jumper 63 and
jumper 64 are s horted. *[The st atus of the
jumpers determines the model type. (USA,
Europe/Asia, Japan)]

If the fusing temperature stays below 70 °C for
more than 36 seconds after selecting fusing
lamp ON in Energy Saver Mode Level 1 or when
in Standby Mode.

If the fusing temperature takes more than 60
seconds to reach 145°C from the standby
temperature.
Either: If the fusing temperature stays above
110°C for more than 180 seconds after selecting
the power saver standby temperature of 80°C
for Energy Saver Mode Level 1.
Or: If the fusing temperature stays above 175°C
for more than 180 seconds after selecting the
power saver standby temperature of 145°C for
Energy Saver Mode Level 1.

If the fusing temperature is above 190°C for
more than 180 seconds.

If the fusing temperature is below 150 °C for
more than 180 seconds.

If the fusing temperature is below 140 °C for
more than 1 second.

If the fusing temperature takes more than 20
minutes to return to 100°C when the machine
goes into Energy Saver Mode Level 2. (After
selecting fusing lamp Off for Energy Saver Mode
Level 2.)
Either: If the fusing temperature takes more than
20 minutes to go down to below 100 °C when
the machine goes into the Energy Saver Mode
Level 2. (After selecting the standby temperature
of 80 °C for Energy Saver Mode Level 2.)
Or: If the fusing temperature takes more than 5
minutes to go down to 165 °C after selecting the
standby temperature for Energy Saver Mode
Level 1.

If the fusing temperature reaches 250°C.

Sub-code 09At power on

Sub-code 0B

Sub-code 05

Sub-code 02

Sub-code 0A

Sub-code 01

Sub-code 06

Sub-code 07

Sub-code 03

Sub-code 04

Sub-code 08

2-26

30 November, 1999 SYSTEM FEATURES

2.3 SYSTEM FEATURES

2.3.1 ENERGY SAVER MODES

In normal mode (during operation) or energy saver mode level 1, the main CPU
monitors and controls the machine. The fusing lamp is either turned off or
maintained at the standby temperature (80 °C), depending on the User Parameter
Switch 05 bit 6 setting.

In Energy Saver Mode, level 2 (also known as the 2-watt Energy Saver Mode), the
main CPU and DC power supplies are shut down. The Energy Saver CPU monitors
the Energy Saver key, incoming calls, the document sensor, and the PC interface.
When the Energy Saver CPU detects activity at one of these, it activates the +5V
supply to start up the main CPU a

Normal Level 1 Level 2

Main CPU ON ON OFF
Energy Saver CPU OFF OFF ON
LCD/LED ON OFF OFF
Energy Saver LED OFF ON ON
+5V Power Supply ON ON OFF
+24VM Power Supply ON ON OFF
Fusing Lamp ON

nd other

80 °C or OFF

power supplies.

OFF

The fusing lamp is turned off as the default setting for energy saver mode level 1.
When the energy saver timer expires, the machine automatically goes into Energy

Saver Mode level 1 to keep the cooling fan going. When the fusing temperature
has fallen down below a certain threshold, the machine enters Energy Saver Mode
level 2.

Detailed

Descriptions

Cross Reference

Energy saver timer initial setting: System Switch 0B, Bits 2 and 3
(1 minute, 3 minutes, 5 minutes, or Unlimited: Timer disabled)

Going to Level 2 Mode from Level 1 Mode

The machine will not go into Level 2 Energy Saver Mode if one of the following
conditions exists:

•

Either a TX/RX file is stored in the memory.

•

SAF memory not empty

•

Mechanical error(s)

•

The NCU is off-hook

2-27

SYSTEM FEATURES 30 November, 1999

Manual Wake Up Conditions

While the machine is in Energy Saver Mode, either the Energy Saver CPU (Level

2) or the main CPU (Level 1) monitors signals from the following:

•

Energy Saver key

•

Document sensor

•

Off-hook detector on the NCU

When the CPU detects a signal from one of thes e, it wakes up all the components
and the machine enters normal operating mode, even during the Night Timer
period.

After the operations are done, the machine returns to Energy Saver Mode, as
explained previously.

NOTE:

The machine does not detect cover open during the level 2 Energy Saver
Mode.

2-28

30 November, 1999 SYSTEM FEATURES

2.3.2 AUTOMATIC SERVICE CALLS

Service Call Conditions

The machine makes an automatic service call when one of the following conditions
occurs.

Service Call Conditions Error Code

Laser diode failure 9-20 21
Fusing lamp failure 9-22 01 to 0B
Hexagonal mirror motor failure 9-23 31 or 32
Power pack failure 9-29 51 to 59
Excessive jams in the scanner None None
Excessive jams in the printer None None
The PM counter has reached the threshold (60,000 prints) None None
The PM interval has expired None None

Sub-code

(8003B5H)

Cross Reference

Service station number: Service Function 13
Troubleshooting: Chapter 7

Detailed

Descriptions

2-29

SYSTEM FEATURES 30 November, 1999

2.3.3 SEP/SUB CODING

Overview

ITU-T introduced the following protocol signals in the T.30 recommendation in

1996. These signals enable confidential transmission and secured polling between
machines produced by differen t manufacturers.

SEP (Selective Polling): This signal informs the other terminal of the polling ID to
enable secured (ID) polling.
Up to 20 digits or characters can be sent in a SEP frame.

PWD (Password): This signal informs the other terminal of the password to enable
extra security.
Up to 20 digits or characters can be sent in a PWD frame.

SUB (Sub-address): This signal informs a sub-address of a destination. Some fax
servers use this information to route a received fax message to a specific address
in the local network.
Up to 20 digits or characters can be sent in a SUB frame.

SID (Sender ID): This signal informs the other terminal of the sender ID to identify
the transmitter.
Up to 20 digits or characters can be sent in a SID frame.

The ITU-T recommendation only clarifies the requirements for the transmitting
terminal, and does not specify the requirements for the receiving terminal. How the
receiving terminal treats these signals varies with receiver terminal and
manufacturer.

NOTE:

This machine is not capable of receiving above (SEP/PWD/SUB/SID)
signals.

2-30

30 November, 1999 SYSTEM FEATURES

Selective Polling (SEP/PWD)

Tx Rx

CED
NSF

DIS

SEP

NSC or DTC

NSS or DCS

TCF

CFR

H545D560.WMF

SEP Signal:

When the RX terminal receive s the SEP signal with the NSC or DTC signal, the RX
terminal switches over to secured polling transmission using the SEP ID. The SEP
(Selective polling) signal must contain four digits as an ID.

Detailed

Descriptions

The RX terminal automatically disconnects the line when any of the following
conditions occur (Error Code 0-15):

•

When the SEP ID is other than four di gits

•

When anything other than numbers is included in the ID

The communication is free polling when the programmed SEP ID is 0000.

PWD Signal:

When the PWD (password) and the SEP signals are transmitted together, the PWD
programmed becomes an ID code for the stored ID override.

NOTE:

SEP and PWD reception is disabled for this machine.
The machine automatically disconnects the line when it receives the SEP
or PWD signal.

2-31

SYSTEM FEATURES 30 November, 1999

Sub-address (SUB/SID)

Tx Rx

CED
NSF

DIS

SUB

NSS or DCS

TCF

CFR

H545D561.WMF

SUB Signal:

The SUB (sub-address) signal transmitted from the TX terminal contains a
confidential ID. A stored message can be printed using the SUB ID as a
confidential ID.

The SUB ID must contain four digits. The receiving terminal automatically
disconnects the line when any of the following conditions occur (error code 0-15):

•

When the SUB ID is other than four digits

•

When anything other than numbers is included in the ID

•

W hen a confidential ID is not programmed in the RX terminal and when the

transmitted SUB ID is 0000

A stored message can be printed using the (normal) confidential ID stored in the
machine when the SUB ID sent from the transmitter is 0000.

SID Signal:

When transmitted together with the SUB signal, the SID programmed is an ID code
for the confidential ID stored override.

NOTE:

SID reception is disabled for this machine.
This machine automatically disconnects the line when it receives a SID
signal.

Cross-reference:

Section 4.2 Bit Switches

Communication Bit Switch 17 Bit 1: SUB signal reception.

2-32

30 November, 1999 SYSTEM FEATURES

2.3.4 PAGE SEPARATION AND DATA REDUCTION

Incoming pages that are only slightly longer than the copy paper may be reduced
in the sub-scan direction. Whether or not this happens depends on the settings of
printer switches 04 and 05.

Reduction Enabled

If bit 0 of printer switch 03 is at 1 (Enabled), the data will be reduced in the page
memory to fit on the copy paper. However, data will only be reduced if the length of
the incoming page is ± 5 mm shorter than a certain maximum length. The
maximum reducible incoming page length depends on the copy paper size and the
reduction ratio stored for that paper size in printer switches 04 and 05.

Each paper size can be programmed with a separate reduction ratio. In each of the
two bit switches, there is one bit for each possible paper size. The combination of
the bit settings determines the ratio for that paper size.

Bit No. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Switch

No.

Sw 04 0: 4/3 1: 4/3 0: 8/7 1: 12/11
Sw 05 0: 0: 1: 1:

Not used Not used Legal F4 A4 Letter Not used

A5

sideways

Detailed

Descriptions

The following table shows the maximum reducible incoming page length for each
copy paper size. All lengths are in millimeters. The factory setting of the reduction
ratio is 4/3.

Asia/Taiwan Model

Paper Printable Page Maximum Reducible Incoming Page Length

Type Length Ratio = 4/3 Ratio = 8/7 Ratio = 12/11

A5 Sideways 147.8 mm 190.1 mm 162.9 mm 155.3 mm

A4 296.9 mm 388.8 mm 333.2 mm 318.2 mm
F4 330.1 mm 433.2 mm 371.2 mm 354.3 mm

Incoming pages that are longer than the maximum length will not be reduced, but
will print on two pages and be treated in accordance with the setting of bit 1 of
printer switch 00. If this bit is 1, the bottom few lines of the page will continue from
where the first page left off. If it is 0, the next page continues from where the
previous page left off.

2-33

SYSTEM FEATURES 30 November, 1999

Reduction Disabled

If bit 0 of printer switch 03 is at 0 (Disabled), the data will not be reduced. In
addition, if the incoming page is up to x mm longer than the copy paper, the excess
portion will not print. The setting of bits 4 to 7 of printer switch 03 determine the
value of x, somewhere between 0 to 15 mm.

Hex value Value of X

00
01

and so on until

F15

Messages more than x mm longer than the copy paper will print out o n two pages
in accordance with the setting of bit 1 of printer switch 00, as explained earlier.

2-34

30 November, 1999 SYSTEM FEATURES

2.3.5 MEMORY RECEPTION CONDITIONS

User parameter switch 05 bit 1 allows the user to select how to treat an incoming
message that is without RTI or CSI.

User parameter switch 05 Bit-1:

Memory reception if no RTI or CSI received 0: Possible, 1: Impossible
If 0 is selected, the machine receives all messages regardless of RTI and CSI.
If 1 is selected (this is the default setting), the user parameter setting works in

combination with the following bit switch.
System Bit Switch 11 Bit 6:

Conditions for memory reception if no RTI or CSI is received.

0: Impossible; memory reception is available only after receiving the RTI or CSI.

1: Memory reception is possible if there is no mechanical (printer) error.
The default setting is 1. The default setting means that if the printer is working, it

will receive all messages. However, when there is a mechanical error in the printer,
the machine rejects such a message becaus e no trace of the sender will be stored
in the machine.

Detailed

Descriptions

2-35

SYSTEM FEATURES 30 November, 1999

2.3.6 V.8/V.34 PROTOCOL

Please refer to the V.8/V.34 Training Manual for overall information about V.8/V.34
protocol.
This section explains only functions that are specific to this machine.

Data Rate Change Procedure

Shift-down Request from Receiving Terminal

6619NESV

4VW#EORFN

6619NESV

6619NESV

6415NESV

5QG#EORFN

6415NESV

5QG#SDJH

TX RX

Fax data

PPS-NULL

Fax data

PPS-NULL

Fax data

PPS-NULL

MPh

Fax data

PPS-MPS

Fax data

PPS-EOP

DCN

PPR

PPR

6KLIW0GRZQ
UHTXHVW

MPh
MCF

MCF

MCF

eor

N

9

(default)

8

7

9

9

9

H551D505.WMF

•

is the number of frame re-transmissions until the TX terminal sends DCN to

N

eor

terminate the communication. This number is fixed at “9”, and is not adjustable.

If this machine has sent two PPRs for one ECM block, it will request one step shift­down to the sender terminal in the next control channel.

2-36

30 November, 1999 SYSTEM FEATURES

Shift-down Request from Sending Terminal

TX RX

6619NESV

6619NESV

6619NESV

6619NESV

6619NESV

6KLIWGRZQ

5;1;NESV

Fax data

Fax data

Fax data

Fax data

Fax data

MPh

Fax data

PPR

PPR

PPR

PPR

MPh

MCF/

PPR

MCF

H545D563.WMF

1

2

3

4

If this machine has received four PPRs for one ECM block, it will request a two­step shift-down to the receiving terminal in the next control channel.

Shift-up Request from Receiving Terminal

Detailed

Descriptions

TX R X

5917NESV

5917NESV

5917NESV

Fax data

Fax data

Fax data

MPh

MCF

MCF

MPh

1

2

6KLIWXS

MCF

5;1;NESV

Fax data

H545D564.WMF

If this machine has sent two consecutive MCFs and detected a good line condition,
it will request a one step up-shift to the sender terminal in the next control channel.

2-37

SYSTEM FEATURES 30 November, 1999

2.3.7 BLANK SHEET DETECTION

When the machine scans the document for transmission, it counts the black pixels.
If the number of black pixels is below a certain threshold, the machine displays an
error message (BLANK DOCUMENT).

Immediate transmission

When the machine detects one or more blank pages, the LCD displays an error
message for 20 seconds after transmission.

Memory transmission

When the machine detects one or more blank pages, the LCD displays an error
message for 20 seconds after completing memory storage.

Cross-reference:

8002E8 Error display condition
The setting of this RAM address determines when the machine displays the “blank

paper detected” error message.
01H: If the first page is blank
02H: If all the pages are blank
03H: If at least one of the pages is blank

Section 4.5 Service RAM Address

2-38

30 November, 1999 PCBS

2.4 PCB

2.4.1 FCU

S

DRAM

FCU

IC Card

I/F

SRAM

AFE

NCU

SYSTEM BUS

Flash
ROM

Power

Pack

GEPC

Modem

Energy

Saver

CPU

FCIP2

VIDEO

RAM

Motor

Driver

EXIO

Operation

Panel

Main

Motor

H545D701.WMF

Detailed

Descriptions

The FCU (Facsimile Control Unit) board contains the FCIP2 (Facsimile Control and
Image Processor), DRAM, SRAM, Flash ROM, and video processing memory, and
it controls the entire system.FCIP2

•

CPU

•

Data compression and reconstruction (DCR)

•

Digital image processor

•

Laser interface

•

DMA controller

•

Clock generation

•

Stepper motor control

•

DRAM backup control

•

Fusing lamp control

ROM

•

1MB (8 Mbits) flash ROM for system software storage

DRAM

•

2 MB DRAM shared between the Line Buffer (124 KB), ECM Buffer (128 KB),

Page Memory (1156 KB), System RAM (128KB), and SAF memory (512 KB)

SRAM

•

32 KB SRAM for system and user parameter storage, backed up by the

battery on the FCU

Video SRAM

•

8 KB SRAM for video processing

2-39

PCBS 30 November, 1999

Modem (Rockwell R288F)

•

V.21, V.27ter, V.29, V.17, V.33 (Ricoh mode only), and V.34 modems

GEPC

•

Power pack and main motor control

Oscillators

•

29.952 MHz oscillator for system, scanner and printer clock generation

•

32.76 8 MHz oscillator for the real time clock. The battery on the FCU backs
this up

•

56.448 MHz oscillator for the R288F modem clock

•

4.19 MHz oscillato r for the DTMF receiver clock

•

8.00 MHz oscillator for the Energy Saver CPU clock

•

8.00 MHz oscillator for the GEPC clock

EXIO (External I/O)

•

Serial interface to the operation panel and optional paper feed units

•

Parallel interface to the motors, clutches, sensors, and other electrical

components

Switch

Item Description

SW1 Switches t he backup battery on/off

Energy Saver CPU

•

4-bit CPU for controlling the machine during energy saver mode.

Analog circuit with HIC (AFE – Analog Front End)

•

2-4 wire switching

•

Filters and amplifiers

•

Monitor speaker driver

DC/DC Converters

•

+5V, +12V, and -9V generation

DRAM Backup

•

+5VD generation for DRAM (SAF memory) backup

The FCU (Facsimile Control Unit) board contains the FCIP2 (Facsimile Control and
Image Processor), DRAM, SRAM, Flash ROM, and video processing memory, and
it controls the entire system.

2-40

30 November, 1999 PCBS

2.4.2 PSU

Fuse(F1) Fuse(F2)

HOT

Surge

Protection

COLD

AC Inlet

FG

•

+24Vdc generat i on

•

Fusing lamp AC power supply and control

Protection

Main Switch

Surge

FG

Phase

Control

Switching

Circuit

HTN HTL

+24 V
+24 V
COM1
COM1
COM1
+24 V

CH1

8 Pin

1HTORON

1HTON

CH2

AC Heater

H545D501.WMF

Detailed

Descriptions

2-41

PCBS 30 November, 1999

2.4.3 NCU (USA/TAIWAN)

TIP

RING

T1

R1

NCU

Current

Sensor

Relay

BR1

24V

JP6

OHDISW

24V

Ring Detect

JP5

Ext. Tel
DP/Off-

Hook

Detection

TRXD

OHDISW

Q6

Hook0
Hook1

Ex Ring

RITONE

Ex TDI

Q5

CMLSW

H545D550.WMF

Jumpers

Item Description

JP5
JP6

BR1 Also remove BR1 when the machine is connected to a dry line.

These jumpers should be shorted when the machine is connected to a
dry line for back-to-back tests.

2-42

30 November, 1999 INSTALLING THE MACHINE

3. INSTALLATION

3.1 INSTALLING THE MACHINE

Refer to the Operator's Manual for information about the installation environment
and instructions on how to install and set up the machine.

3.2 INITIAL PROGRAMMING

Items to Program (Service Level) Function No.

Country code (NCU parameter 00) Function 08
Country code (System switch 0F) Function 01
Protocol requirements (G3 switch 0B) Function 01
PABX access code (RAM address 8000BB) Function 06
PABX access method (RAM address 8000AD) Function 06
Machine's serial number Function 14
Service station's fax number Function 13
PM call (System switch 01- bit 0) Function 01
Periodic service call (RAM address 800266) Function 06

Installation

Items to Program (User Administrator Level) Function No.

Clock Function 91
Initial programming items Function 61
On/off switches Function 62
Display/report language Function 93
Fusing power control during energy saver mode

(User parameter switch 05 - bit 6)

Function 63

3.3 INSTALLING OPTIONAL UNITS

An optional paper feed unit is available for this machine. Refer to the Operator's
Manual for how to install and set up.

3-1

30 November, 1999 SERVICE LEVEL FUNCTIONS

4. SERVICE TABLES AND PROCEDURES

4.1 SERVICE LEVEL FUNCTIONS

In this section, the following symbols refer to frequently used keys:

4

- Start key

T

- Stop key

'6

:
/
?
@
á
ã

- Function key

- Yes key

- No key

- Up arrow key

- Down arrow key

- Right arrow key

- Left arrow key

4.1.1 BIT SWITCH PROGRAMMING (FUNCTION 01)

'6

1.
then immediately press

í ì

2.
B

ç ì ä ä å

:

:

it 7 is on the left, and bit 0 on the right.

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

SERVICE Y/NEXT>
01 BIT SW

Tables

Service

3. Scroll through the bit switch menu using ó or

Example:

Then scroll through the bit switches.
Increment bit switch:
Decrement bit switch:

Example:

4. Adjust the bit switch.

Example:

press

5. Either:

•

Adjust more bit switches - go to step 3.

•

Finish -

To see the communication switches:

ú

x 3

á

ã

á

Display bit switch 3:

To change the value of bit 7,

x 3

æ

'6

4-1

ú

COM DF : 0000 0000
BITSW 00: 0000 0000

COM DF : 0000 0000
BITSW 03: 0000 0000

SERVICE LEVEL FUNCTIONS 30 November, 1999

4.1.2 SYSTEM PARAMETER LIST (FUNCTION 02)

The format of the list is as follows:

'6

1.
then immediately press

í ë

2.

3. Finish:

ç ì ä ä å

4

:

'6

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

START
PARAMETER LIST

4.1.3 ERROR CODE DISPLAY (FUNCTION 03)

'6

1.
then immediately press

í ê

2.

3. Either:
Scroll through the error codes using á or

Finish -

ç ì ä ä å

:

'6

,

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

ERROR CODE <>

ã

1-01 JAN 01 17:30

4.1.4 SERVICE MONITOR REPORT (FUNCTION 04)

'6

1.
then immediately press

í é

2.

3. Finish:

ç ì ä ä å

4

:

'6

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

START
SERVICE REPORT

4.1.5 GROUP 3 PROTOCOL DUMP (FUNCTION 05)

'6

1.
then immediately press

í è

2.

í

3.

4

4.

5. Finish:

ç ì ä ä å

:

'6

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-G3 1-PC

START
PROTOCOL DUMP

4-2

30 November, 1999 SERVICE LEVEL FUNCTIONS

4.1.6 PC PROTOCOL DUMP (FUNCTION 05)

'6

1.
then immediately press

í è

2.

ì

3.

4

4.

5. Finish:

ç ì ä ä å

:

'6

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-G3 1-PC

START
PC PROTOCOL DUMP

4.1.7 RAM DISPLAY/REWRITE (FUNCTION 06)

'6

1.
then immediately press

í ç

2.

í

3.

ç ì ä ä

:

å

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-MEM.R/W 1-MEM.DUMP

ADDRESS = 000000
DATA = 00

Tables

Service

4. Input the address that you wish to see.

Example:

Address 800020

å í í í ë í

Note:

press

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

Example:
Note:

6. Either:

•

•

If you wish to move the cursor,

á

.

80, press

If you wish to move the cursor, press

View more addresses - go to step 4.
Finish -

'6

å í

á

4.1.8 RAM DUMP (FUNCTION 06)

'6

1.
then immediately press

2. í ç

ç ì ä ä å

:

:

ADDRESS = 800020
DATA = 20

ADDRESS = 800020
DATA = 80

.

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-MEM.R/W 1-MEM.DUMP

4-3

SERVICE LEVEL FUNCTIONS 30 November, 1999

ì

3.

MEMORY DUMP START/N
ADD.000000 - 0000FF

4. Enter the first four digits of the start and end
addresses. For example, enter “8000” for the
start address 800000(H), and enter 8001 for
the end address 8001FF(H). Then, press "Start" to print the dump list.

5. Finish:

'6

MEMORY DUMP START/N
ADD.800000 - 8001FF

4.1.9 COUNTER DISPLAY/REWRITE (FUNCTION 07)

'6

1.
then immediately press

í æ

2.

3. Either:
Check the transmitted, received, scanned and
printed page counters, and

the printer and scanner jam counters - press

ç ì ä ä å

:

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-COUNTER 1-PM
2-TONER

TX :012345
RX :012345

í

(To see the scanned and printed page
counters, press ú.

To see the printer and scanner jam counters,
press ú again.)

Check the PM counter - press

Check the TONER counter - press
This is the number of prints made with the
current cartridge.

4. To change the cont ents of a counter,
input the new value, then press : .

5. To finish:

'6

ì

ë

SCN :012345
PRT :012345

S.JAM :000000
P.JAM :000000

PM COUNTER:001234

TONER :001234

4-4

30 November, 1999 SERVICE LEVEL FUNCTIONS

4.1.10 NCU PARAMETERS (FUNCTION 08)

'6

1.
then immediately

í å

2.

í

3.

4.

Scroll through the parameters using

á

the new value at the keypad, then press : .

Example:

5. To finish: /

NOTE:

ç ì ä ä å

:

:

or ã . If you want to change a value, enter

Set NCU parameter 04 to 005.

á á á á

'6

Parameter CC is the Country Code, Parameter 01 is the TX level.
Refer to section 4.3 for full details on NCU parameters.

í í è

.

:

4.1.11 MODEM TEST (FUNCTION 08)

'6

1.
then immediately press

ç ì ä ä å

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-NCU 1-MODEM
2-DTMF 3-V8

NCU KPAD/<>
NO.04 = 005

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

Tables

Service

:

/

'6

T

í å

2.

ì

3.

4. Scroll through the available tests using á or ã.

4

5.

6. To stop the test:

7. To finish:

4.1.12 DTMF TONE TEST (FUNCTION 08)

'6

1.
then immediately press

í å

2.

ë

3.

ç ì ä ä å

:

:

0-NCU 1-MODEM
2-DTMF 3-V8

MODEM TEST START/<>
800 Hz

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-NCU 1-MODEM
2-DTMF 3-V8

4. Scroll through the available tests using á or ã.

4-5

SERVICE LEVEL FUNCTIONS 30 November, 1999

4

5.

6. To stop the test:

7. To finish: /

T

'6

4.1.13 V.8 MODEM TEST (FUNCTION 08)

'6

1.
then immediately press

í å

2.

ê

3.

4. Scroll through the available tests using á or

4

5.

6. To stop the test:

7. To finish: /

ç ì ä ä å

:

T

'6

:

DTMF TEST START/<>
TONE 0

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS
0-NCU 1-MODEM

2-DTMF 3-V8
V8 TEST START

ANSAM

ã

4.1.14 V.34 MODEM TEST (FUNCTION 08)

'6

1.
then immediately

í å

2.

á

3.

4. Scroll through the available tests using á or

4

5.

6. To stop the test:

7. To finish:

ç ì ä ä å

:

é

/

'6

:

ã

T

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS
0-NCU 1-MODEM

2-DTMF 3-V8
4-V34 5-RINGER

V34 SYMBOL RATE Y/<>
2400SYM/S

4-6

30 November, 1999 SERVICE LEVEL FUNCTIONS

4.1.15 RINGER TEST (FUNCTION 08)

'6

1.
then immediately press

í å

2.

á

3.

4

4.

5. To stop :

6. To finish:

ç ì ä ä å

:

è

T

/

'6

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS
0-NCU 1-MODEM

2-DTMF 3-DETECT
4-V34 5-RINGER

RINGER

4.1.16 OPERATION PANEL TEST (FUNCTION 09)

'6

1.
then immediately press

í ä

2.

í

3.

ç ì ä ä

:

å

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-LED/LCD

START

Tables

Service

4

4.

5. To stop the test, press

/

6. To finish:

'6

T

4.1.17 LED ARRAY TEST (FUNCTION 10)

'6

1.
then immediately press

ì í

2.

í

3.

4

4.

5. To stop the test, press

6. To finish:

ç ì ä ä

:

/

'6

å

:

T

START
LED/LCD

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-LAMP 1-ADF

START

LAMP 000

4-7

SERVICE LEVEL FUNCTIONS 30 November, 1999

4.1.18 ADF TEST (FUNCTION 10)

'6

1.
then immediately press

ì í

2.

ì

3.

4. Place a document in the feeder,
then press 4.

5. To stop the test, press

6. Finish: /

ì ä ä å

ç

:

:

T

'6

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-LAMP 1-ADF

START

ADF

4.1.19 PRINTER TEST PATTERNS (FUNCTION 11)

'6

1.
then immediately press

2. ì ì

ç ì ä ä

:

å

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-PATTERN 1-MECH

í

3.

4. Press a key from í to æ.

5. Press 4.
A test pattern is printed.

6. To finish: /

'6

PATTERN PRINT KPAD

0-7

4.1.20 PRINTER MECHANISM TEST - FREE RUN (FUNCTION 11)

'6

1.
then immediately press

2. ì ì

ì

3.

4

4.

5. To stop the test, press

6. To finish: /

ç ì ä ä

:

å

'6

:

T

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-PATTERN 1-MECH

START

MECH

NOTE:

Make sure that there is some paper in the cassette before starting the test.

4-8

30 November, 1999 SERVICE LEVEL FUNCTIONS

4.1.21 RAM TESTS (FUNCTION 12)

'6

1.
then immediately press

2. ì ë

3. Either:
Test the SRAM: Press í
Test the DRAM: Press ì
Test the SAF card: Press ë

If the test is successful, the display shows "OK".
If the test is unsuccessful, the display shows "ADDRESS=".

4. To finish: /

ç ì ä ä

:

'6

å

:

4
4

4

.

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-SRAM 1-DRAM
2-SAFCARD 3-MÆR

4.1.22 SOFTWARE DOWNLOAD (FUNCTION 12)

Instead of replacing an EPROM to update the machine’s software, use this
procedure to update the software in the Flash ROM.
This function copies software from an external medium to the Flash ROM on the
FCU inside the machine. The external medium for the new software can be another
FCU or an EPROM board.

Tables

Service

1. Turn off the machine.

Data Copy Board
P/N: A1939351

U6: High

U5: Low

H545M501.WMF

2. Insert the Flash/SRAM Copy Tool into the IC card slot, then connect the FCU
or EPROM board with the new software as shown in the above diagram (the
EPROM board is shown here).

NOTE:

The switch on the tool must be at the ON position.

Data Copy Tool
P/N: A1939353
or H5199100

4-9

SERVICE LEVEL FUNCTIONS 30 November, 1999

3. Turn on the machine.

'6

4.
then immediately press

5. ì ë

á

6.

4

7.
If the software downloads successfully, the

display shows "OK".
If the software download fails, the display

shows "

8. To finish, press

9. Turn off the machine and disconnect the tool. Then turn the machine back on.

10. Print out the system parameter list and check the ROM version on it.

ç ì ä ä

:

é

CANNOT PROGRAM

å

'6

:

".

.

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-SRAM 1-SAF
2-SAFCARD 3-M->R

OK!!
COPY MACH <- FLROM

COPYING
CANNOT PROGRAM

4.1.23 SOFTWARE UPLOAD (FUNCTION 12)

This function copies the software from the FCU inside the machine to an external
FCU.

1. Turn off the machine.

2. Connect the Flash/SRAM Copy Tool and an FCU as shown in the previous
section.

NOTE:

3. Turn on the machine.

'6

4.
then immediately press

5. ì ë

The switch [D] on the tool must be at the

ç ì ä ä

å

:

:

position.

OFF

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-SRAM 1-SAF
2-SAFCARD 3-M->R

4-10

30 November, 1999 SERVICE LEVEL FUNCTIONS

4

6. ê
If the software uploads successfully, the
display shows "OK".

If the software upload fails, the display shows
"NG".

7. Finish :

8. Turn off the machine and disconnect the tool. Then turn the machine back on
again.

'6

OK!!
COPY MACH -> FLROM

NG!!
COPY MACH -> FLROM

4.1.24 SRAM DATA DOWNLOAD (FUNCTION 12)

This function copies all the data stored in the SRAM on an external FCU to the
FCU inside the machine. Use this after replacing a damaged FCU to save any
previously programmed settings in the damaged FCU.

1. Turn off the machine.

2. Connect the Flash/SRAM Copy Tool and the damaged FCU.

NOTE:

The setting of the switch on the tool will not affect the result of this
procedure.

Tables

Service

3. Turn on the machine.

'6

4.
then immediately press

5. ì ë

á

6.

4

7.
If the SRAM data downloads successfully, the display shows "OK".

If the SRAM download fails, the display shows
"

CANNOT PROGRAM

8. Finish :

9. Turn off the machine and disconnect the tool. Then turn the machine back on.

ç ì ä ä

:

è

'6

å

:

".

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

0-SRAM 1-SAF
2-SAFCARD 3-M->R

OK!!
COPY MACH <- SRAM

COPYING
CANNOT PROGRAM

4-11

SERVICE LEVEL FUNCTIONS 30 November, 1999

4.1.25 SERVICE STATION FAX NUMBER (FUNCTION 13)

'6

1.
then immediately press

2. ì ê

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

To erase the telephone number: press

4. If the display is correct: :

ç ì ä ä

:

å

:

/

'6

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

S.S. NO. KPAD

„„„„„„„„„„„„„„„„„

S.S. NO. KPAD
212-5555„„„„„„„„„„„

4.1.26 SERIAL NUMBER (FUNCTION 14)

'6

1.
then immediately press

2. ì é

ç ì ä ä

:

å

:

FUNCTION KPAD/NEXT>

■■SERVICE FUNCTIONS

SERIAL # KPAD

„„„„„„„„„„„„„„„„„

3. Enter the serial number at the keypad.
To correct a mistake:

4. If the display is correct:

5. Finish:

'6

/

:

SERIAL # KPAD/Y/N
RICOH 1234567

4-12

30 November, 1999 BIT SWITCHES

4.2 BIT SWITCHES

ø

WARNING

Do not adjust bit switches described as "Not used", as this may cause the
machine to malfunction or to operate in a manner that is unacceptable under local
regulations. Such bits are only for use in other areas, such as Japan.

NOTE:

This manual does not list default settings for bit switches. Refer to the
System Parameter List.

4.2.1 SYSTEM SWITCHES

System Switch 00

No FUNCTION COMMENTS

RAM Reset
Bit 1 Bit 0 Reset Level

0 0 No reset

0 1 Reset Level 2
1 0 Reset Level 3
1 1 Not used

0
1

Reset Level 3: Erases all image data f iles

stored in the SAF memory and
communication files (e.g. substitute RX
files). This is the recommended setting
when the SAF requires clearing.
Reset Level 2: This level erases the
following items in addition to those erased
by Reset Level 3: own telephone number,
bit switches (excluding country code),
RTI/TTI/CSI, report data, programmed
telephone numbers (Quick/Speed/Groups,
service station, etc.), NCU parameters, and
personal codes.
After erasing, the machine automatically
changes these two bits back to 0.

Important:

When RAM reset level 2 is done, the
machine refers to the bit switch country
code (System bit switch 0F: functional
settings) and automatically changes the
NCU country code (NCU parameter: RAM
807F00) to the same code.

Tables

Service

No reset: Normal operation

Cross-reference
RAM Reset Level 1 (Factory reset):

Change the RAM address data from
800005(H) to FF(H), then turn the machine
off and on. In addition to those items erased
by Reset Level 2, the clock, country code
(the default country code is for the U.S.),
scan margin settings and print registration
settings are erased.

4-13

BIT SWITCHES 30 November, 1999

System Switch 00

No FUNCTION COMMENTS

2 Technical data printout on

Journal

0: Disabled
1: Enabled

1: Instead of a personal code, the Journal
lists the following data for each analog G3
communication.

E.g. 32 V34 288 M 01 00 03 02

First number: Symbol rate (V.34 only)
Second number: Final modem type used
Third number: Final date rate (for example,

288 means 28.8 KBPS)
Fourth number: M means modem EQM. /
L means RX level.
Fifth and sixth number: Line quality data.
This is either a measurement of the error
rate or the RX level, depending on the bit 3
setting below. (An M on the report indicates
that it is error rate, and an L indicates RX
level.) The left-hand figure is the high byte
and the right-hand figure is the low byte
(refer to the note after this table for how to
read the RX level). If it measures the error
rate, a larger number means more errors.
Seventh number (RX mode only): Total
number of error lines that occurred during
non-ECM reception.
Eighth number (RX mode only): Total
number of burst error lines that occurred
during non-ECM reception.
The seventh and eighth numbers are fixed
at 00 for transmission records and ECM
reception records.

3

Line quality data output method
0: Error rate measurement
during image data transmission

This bit determines the data type printed in
the Journal when bit 2 (above) enables a
technical data printout.

1: Rx level

4

Line error marks

0: Disabled
1: Enabled

If this bit is 1, a mark will be printed on the
left edge of the page at any place where a
line error occurred in the data. A noisy line
causes such errors, for example.

5

Communication parameter
display

0: Disabled
1: Enabled

This is a faultfinding aid. The LCD shows
the key parameters (see the next page).
This is normally disabled because it cancels
the CSI display for the user.
Be sure to reset this bit to 0 after testing.

6

Protocol dump list output

0: Disabled
1: Enabled

This is only for communication
troubleshooting. It shows the content of the
transmitted facsimile protocol signals.
Always reset this bit to 0 after testing.
The setting of system switch 09 bit 6
determines the types of communication that
the list is printed after.

7

Not used Do not change these settings.

4-14

30 November, 1999 BIT SWITCHES

How to calculate the RX level listed on the Journal (when bit 2 of system switch 00
is set to 1)

Example:

32 V34 288

L 01 00

00 00

The four-digit hexadecimal value (N) after L indicates the RX level.
The high byte is given first, followed by the low byte. Divide the decimal value of N
by -16 to get the RX level.

In this above example, the decimal value of N (=0100[H]) is 256.
So, the actual RX level is 256/-16 = -16 dB.

Communication Parameters

Mode DCS: ITU-T standard NSS: Non-standard G3

Modem rate

Communication mode ECM: With ECM SSC: Using SSC
Compression mode

Resolution

I/O rate 0: 0 ms/line 10: 10 ms/line

Width and reduction A4: A4 (8.3"), no reduction

336: 33600 BPS 168: 16800 BPS
312: 31200 BPS 144: 14400 BPS
288: 28800 BPS 120: 12000 BPS
264: 26400 BPS 96: 9600 BPS
240: 24000 BPS 72: 7200 BPS
216: 21600 BPS 48: 4800 BPS
192: 19200 BPS 24: 2400 BPS

NML: With no ECM, SSC
MMR: MMR compress io n

MR: MR compression
MH: MH compression

F: Fine, transmitted at 8 x 15.4 dots per mm
D: Detail, transmitted at 8 x 7.7 dots per mm
S: Standard, transmitted at 8 x 3.85 dots per mm

25: 2.5 ms/line 20: 20 ms/line
5: 5 ms/line 40: 40 ms/line
”40” is displayed while receiving a fax message using AI
short protocol.

B4: B4 (10.1") no reduction

Tables

Service

System Switch 01

No FUNCTION COMMENTS

0 PM call

0: Disabled 1: Enabled

1-7

Not used Do not change these settings.

This bit switch determines whether the machine
will send an Auto Service Call to the service
station when it is time for PM.

4-15

BIT SWITCHES 30 November, 1999

System Switch 02

No FUNCTION COMMENTS

0 Memory file transfer

0: Disabled
1: Enabled

1: All messages in the memory (including

confidential RX messages) are sent to the fax
number, which is programmed as the service
station.
Always reset this bit to zero after transfer.

Cross-reference

Service station number programming: Function
13

1-2

Not used Do not change these settings.

3

Substitute reception file
printout
0: Full size only
1: Reduce to the paper size

4-5

Not used Do not change these settings.

6 7Memory read/write by RDS

Bit 7 6 Setting
0 0 Always disabled

0 1 User selectable
1 0 User selectable

1: If the paper in the cassette is smaller than the
received message, the machine reduces the
incoming message to the paper size before
printing.

(0,0): All RDS systems are always locked out.
(0,1), (1,0): At any time, an RDS system can

access the machine.
(1,1): At any time, an RDS system can access
the machine.

1 1 Always enabled

System Switch 03

No FUNCTION COMMENTS

0

Length of time that RDS is

to

temporarily switched on when

7

bits 6 and 7 of System Switch
02 are set to "User selectable"

00 - 99 hours (BCD).
This data is only valid if bits 6 and 7 of System
Switch 02 are set to "User selectable".
The default setting is 24 hours.

System Switch 04

No FUNCTION COMMENTS

0-2

Not used Do not change these settings.

3

Dedicated transmission
parameter programming

Set this bit to 1 before changing any dedicated
transmission parameters.

0: Disabled 1: Enabled

4

Inclusion of the Start key in
Keystroke Programs

0: The user does not need to press the Start key
when operating a keystroke program.

0: Not needed 1: Needed

5

Not used Do not change the settings.

6

CSI programming level

1: Only a service function can program the CSI.

0: User level 1: Service level

7

Telephone line type
programming mod e

1: Only a service function can program the
telephone line type selection.

0: User level 1: Service level

4-16

30 November, 1999 BIT SWITCHES

System Switch 05

No FUNCTION COMMENTS

0-1

Not used Do not change these settings.

2 Display of both RTI and CSI

on the LCD

1: Both RTI and CSI will be displayed alternately
on the LCD.

0: Disabled 1: Enabled

3-7

Not used Do not change these settings.

System Switch 06

No FUNCTION COMMENTS

0 Use of the Stop key during

memory transmission

0: Disabled 1: Enabled

1: The Stop key can be used to halt memory

transmissions. However, users might
accidentally cancel another person's memory
transmission in progress.

1-3

Not used Do not change these settings.

4

Use of the Stop key during
memory transmission

0: Disabled 1: Enabled

1: The Stop key can be used to halt memory

transmissions. After pressing the Stop key, a
message (STOP & CLR FILE?) appears on the
LCD.

5-7

Not used Do not change these settings.

Tables

Service

System Switch 07 - Not used (do not change any of these settings)
System Switch 08 - Not used (do not change any of these settings)

System Switch 09

No FUNCTION COMMENTS

0

Not used Do not change this setting.

1

Inclusion of communications in
the Journal when no image
data was exchanged.
0: Disabled 1: Enabled

0: The Journal lists communications that
reached phase C (message TX/RX) of the T.30
protocol.
1: The Journal lists communications that
reached phase A (call setup) of T.30 protocol.
This includes telephone calls.

2 Automatic error report printout

0: Disabled 1: Enabled

0: Error reports are not printed.
1: Error reports will print automatically after all

failed communications, excluding polling
reception and immediate transmissions.

3 Print error code on error report

1: Error codes are printed on the error reports.

0: No 1: Yes

4

Listing of Confidential IDs on
the Personal Code List

0: Disabled 1: Enabled

5

Power failure report

0: Disabled 1: Enabled

1: Confidential IDs registered with Personal

Codes by the users will appear on the Personal
Code List.

1: A power failure report automatically prints
after the power is switched on if a fax message
disappears from memory when the power was
turned off last.

4-17

BIT SWITCHES 30 November, 1999

System Switch 09

No FUNCTION COMMENTS

6 Conditions for printing the

protocol dump list

0: Print for all communications
1: Print only when there is a

communication error

7 Priority given to various types

of remote terminal ID when
printing reports

This switch becomes effective only when system
switch 00 bit 6 is set to 1.
1: Set this bit to 1 when you wish to print a
protocol dump list only for communications with
errors.

This bit determines which set of priorities the
machine uses when listing remote terminal

names on reports.
0: RTI > CSI > Dial label >
Tel. Number
1: Dial label > Tel. number >

Dial Label: The name stored with the

Quick/Speed Dial number by the user.
RTI > CSI

System Switch 0A

No FUNCTION COMMENTS

0-3

Not used Do not change these settings.

4

Dialing on the ten-key pad
when the handset is off-hook

1: The user can dial on the ten-key pad when

the handset is off-hook.

0: Disabled 1: Enabled

5

On-hook dial

0: On-hook dial is disabled.
0: Disabled 1: Enabled

6-7

Not used Do not change these settings.

System Switch 0B

No FUNCTION COMMENTS

0

Automatic reset timer

Bit 1 Bit 0 Timer setting

1

0 0 1 minute

(1, 1): Automatic reset is disabled.

(Other): The machine returns to standby mode

when the timer expires after the last operation.
0 1 3 minutes
1 0 5 minutes
1 1 No limit

2

Power Saver mode timer
Bit 3 Bit 2 Time Limit

3

0 0 1 minute
0 1 3 minutes
1 0 5 minutes
1 1 No limit

(1, 1): Automatic Power Saver mode is

disabled.

(Other): The machine goes into Power Saver

mode when the timer expires after the last

operation.

Cross-reference

Power Saver modes: Section 2.3.1

4-7

Not used Do not change these settings.

4-18

30 November, 1999 BIT SWITCHES

System Switch 0C - Not used (do not change any of these settings)
System Switch 0D - Not used (do not change any of these settings)
System Switch 0E - Not used (do not change any of these settings)

System Switch 0F

No FUNCTION COMMENTS

0

Country code for functional

to

settings (Hex)

7

00: France 10: Not used
01: Germany 11: USA

This country code determines the factory
settings of bit switches and RAM addresses.
However, it has no effect on the NCU
parameter settings and communication

parameter RAM addresses.
02: UK 12: Asia
03: Italy 13: Japan
04: Austria 14: Hong Kong

Cross-reference

NCU country code: Function 08, parameter CC.
05: Belgium 15: South Africa
06: Denmark 16: Australia
07: Finland 17: New Zealand

NOTE: If RAM reset level 1 is done, this

bit switch resets to 11 (USA).

08: Ireland 18: Singapore
09: Norway 19: Malaysia
0A: Sweden 1A: China
0B: Switz. 1B: Taiwan
0C: Portugal 20: Not used
0D: Holland 21: Greece
0E: Spain
0F: Israel

Tables

Service

System Switch 10 - Not used (do not change any of these settings)

System Switch 11

No FUNCTION COMMENTS

0-5

Not used Do not change these settings.

6 Memory reception if no RTI or

CSI received

Memory reception if there is no RTI or CSI also
depends on user parameter switch 05 bit 1.
This Sw U.P.05 bit 1
X 0 : Possible
0 1 : Impossible
1 1 : Only possible when the
printer mechanism has no problem

7

Not used Do not change this setting.

4-19

BIT SWITCHES 30 November, 1999

System Switch 12

No FUNCTION COMMENTS

0

TTI printing position in the

to

main scan direction

7

08 to 92 (BCD) mm. Only input even numbers.
This setting determines the TTI print start
position from the left edge of the paper. If the
TTI is too far to the right, the file number, which
is on the top right of the page, may obscure it.

System Switch 13 - Not used (do not change any of these settings)
System Switch 14 - Not used (do not change any of these settings)

System Switch 15

No FUNCTION COMMENTS

0

Not used Do not change this setting.

1 Programming with European

characters

0: Disabled 1: Enabled

2-7

Not used Do not change these settings.

1: The user can program with European
characters (e.g. ”ä”, ”å”) for the TTI, Quick Dial
labels, etc.

System Switch 16 - Not used (do not change any of these settings)

System Switch 17

No FUNCTION COMMENTS

0

Not used Do not change this setting.

1

Direct fax number entry

0: Disabled 1: Enabled

2-7

Not used Do not change these settings.

0: The user must place the original on the ADF
before dialing.

System Switch 18 - Not used (do not change any of these settings)
System Switch 19 - Not used (do not change any of these settings)
System Switch 1A - Not used (do not change any of these settings)
System Switch 1B - Not used (do not change any of these settings)
System Switch 1C - Not used (do not change any of these settings)
System Switch 1D - Not used (do not change any of these settings)
System Switch 1E - Not used (do not change any of these settings)
System Switch 1F - Not used (do not change any of these settings)

4-20

30 November, 1999 BIT SWITCHES

4.2.2 SCANNER SWITCHES

Scanner Switch 00

No FUNCTION COMMENTS

0-1

Not used Do not change these settings.

2

Maximum transmittable
document length
Bit 3 2 Setting

3

0 0 600 mm
0 1 1200 mm
1 0 Not used
1 1 Not used

4

OR processing in imm ediate
TX and copying (Standard
resolution)

0: Disabled
1: Enabled

5 OR proc essing in immediate

TX and copying (Detail
resolution)

0: Disabled
1: Enabled

6-7

Not used Do not change these settings.

If the user wants to send very long documents
such as well logs, select the higher setting.

0: The machine scans the document in 3.85
line/mm steps, then transmits or makes copies.
1: The machine scans the document in 7.7
line/mm steps. Each pair of lines goes through
OR processing before transmission or copy
making. Toner may be used up earlier if OR
processing is enabled.

0: The machine scans the document in 7.7
line/mm steps, then transmits or makes copies.
1: The machine scans the document in 15.4
line/mm steps.

Tables

Service

Scanner Switch 01 - Not used (do not change any of these settings)
Scanner Switch 02 - Not used (do not change any of these settings)
Scanner Switch 03 - Not used (do not change any of these settings)
Scanner Switch 04 - Not used (do not change any of these settings)
Scanner Switch 05 - Not used (do not change any of these settings)
Scanner Switch 06 - Not used (do not change any of these settings)
Scanner Switch 07 - Not used (do not change any of these settings)
Scanner Switch 08 - Not used (do not change any of these settings)
Scanner Switch 09 - Not used (do not change any of these settings)
Scanner Switch 0A - Not used (do not change any of these settings)
Scanner Switch 0B - Not used (do not change any of these settings)
Scanner Switch 0C - Not used (do not change any of these settings)
Scanner Switch 0D - Not used (do not change any of these settings)
Scanner Switch 0E - Not used (do not change any of these settings)
Scanner Switch 0F - Not used (do not change any of these settings)

4-21

BIT SWITCHES 30 November, 1999

4.2.3 PRINTER SWITCHES

Printer Switch 00

No FUNCTION COMMENTS

0 Page separation mark

0: Disabled
1: Enabled

1 Repetition of data when the

received page is longer than
the printer paper

0: Disabled
1: Enabled

2-7

Not used Do not change the settings.

0: No marks printed.
1: If an incoming fax requires two sheets to print,

the machine prints an "x" inside a small box at
the bottom right hand corner of the first sheet.
Then, it prints a "2" inside a small box at the top
right hand corner of the second sheet. This
helps the user identify pages that have been
split up.

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 2.2.12 for details.

Printer Switch 01

No FUNCTION COMMENTS

0 Reset the fusing unit failure

0: Off
1: On (Clear)

1-7

Not used Do not change the settings.

Printer Switch 02 - Not used (do not change any of these settings)

When a fusing error occurs, set this bit to 1 after
fixing the problem. The machine then resets the
fusing error. Switch the machine off/on and this
bit will reset itself to 0.

4-22

30 November, 1999 BIT SWITCHES

Printer Switch 03

No FUNCTION COMMENTS

0 Reduce the length of received

data

0: Disabled
1: Enabled

0: Incoming pages are printed without length

reduction.

Cross-reference

Page separation threshold: Printer Switch. 03,
bits 4 to 7.
1: Incoming pages are reduced in the
lengthwise direction when printing.

Cross-reference

Reduction ratio: Printer Switches 04/05
Page separation and data reduction: section 2­2-12

1-3

Not used Do not change these settings.

4

Page separation threshold (with reduction disabled in switch 03 bit 0 above)

to

If the incoming page is up to x mm longer than the copy paper, the excess portion
will not print. If the incoming page is more than x mm longer than the copy paper,

7

the excess portion will print on the next page.
These four bits determine the value of x.

Hex value of bits 4 to 7 x (mm)
0 0
1 1
and so on until
F 15

Tables

Service

Cross-reference

Page separation and data reduction: section 2-2-12
Length reduction On/Off: Printer Switch 03, Bit 0

4-23

BIT SWITCHES 30 November, 1999

Printer Switches 04 and 05

No FUNCTION COMMENTS

0

Reduction ratios used for different paper sizes (with reduction enabled in switch
03-bit 0 above)

to

If reduction is enabled, the data will be reduced in the lengthwise direction before
printing.

7

These switches determine the maximum reduction ratio for each paper size.

Cross-reference

Page separation and data reduction: section 2.2.12.

Switch 04/05 US Europe Asia
Bit0 Not used A5 sideways A5 sideways
Bit1 Not used Not used Not used
Bit2 LT lengthwise Not used Not used
Bit3 Not used A4 lengthwise A4 lengthwise
Bit4 Not used Not used F lengthwise
Bit5 LG lengthwise Not used Not used
Bit6 Not used Not used Not used
Bit7 Not used Not used Not used

The available paper sizes depend on the country version of the machine.

SwSw.

04050






Printer Switch 06 - Not used (do not change any of these settings)
Printer Switch 07 - Not used (do not change any of these settings)
Printer Switch 08 - Not used (do not change any of these settings)
Printer Switch 09 - Not used (do not change any of these settings)
Printer Switch 0A - Not used (do not change any of these settings)
Printer Switch 0B - Not used (do not change any of these settings)
Printer Switch 0C - Not used (do not change any of these settings)
Printer Switch 0D - Not used (do not change any of these settings)
Printer Switch 0E - Not used (do not change any of these settings)
Printer Switch 0F - Not used (do not change any of these settings)







:





.

=









0

1





4

3

=





,,,





0

0



4



=





3





1

1





8





7





1

12

=

11

4-24

30 November, 1999 BIT SWITCHES

4.2.4 COMMUNICATION SWITCHES

Communication Switch 00

No FUNCTION COMMENTS

0

Compression modes available
in receive mode

Bit 1 0 Modes

1

0 0 MH only
0 1 MH/MR
1 0 MH/MR/MMR
1 1 Not used

2

Compression modes available
in transmit mode

3

Bit 3 2 Modes

0 0 MH only
0 1 MH/MR
1 0 MH/MR/MMR
1 1 Not used

4-7

Not used Do not change these settings.

These bits determine the compression
capabilities declared in phase B (handshaking)
of T.30 protocol.

These bits determine the compression
capabilities used in the transmission and
declared in phase B (handshaking) of T.30
protocol.

Communication Switch 01

No FUNCTION COMMENTS

0

ECM

0: Disabled 1: Enabled

1

Not used Do not change this settings.

2

Wrong connection prevention
method

3

Bit 3 Bit 2 Setting
0 0 None
0 1 8 digit CSI
1 0 4 digit CSI
1 1 CSI/RTI

If this bit is 0, ECM is switched off for all
communications.

(01) - The machine will not transmit if the last 8
digits of the received CSI do not match the last 8
digits of the dialed telephone number. This does
not work for manual dialing.
(10) - The same as above, except that only the
last 4 digits are compared.
(11) - The machine will not transmit if the other
end does not identify itself with an RTI or CSI.
(00) - Nothing is checked; transmission will
always go ahead.
Note: When enabling wrong connection
prevention, disable AI short protocol.

4 Operator call if no response is

received in reply to NSF/DIS
0: Disabled 1: Enabled

Set this bit to 1 if the user expects to receive
telephone calls at the same number that the
machine is connected to. The machine will then
alert the user if a phone call comes in.

5

Not used Do not change the setting.

6

Maximum printable page
length available

Bit 7 Bit 6 Setting

7

0 0 No limit

The receiving terminal informs the transmitting
terminal of the setting determined by these bits
in the pre-message protocol exchange (in the

DIS/NSF) frames.
0 1 B4
1 0 A4
1 1 Not used

Tables

Service

4-25

BIT SWITCHES 30 November, 1999

Communication Switch 02

No FUNCTION COMMENTS

0 Burst error threshold

0: Low
1: High

If the received page has more consecutive error

lines than the threshold, the machine sends a

negative response.

The low and high threshold values depend on

the sub-scan resolution, and are as follows.

Resolution Standard Detail

Low settings 6 12

High settings 12 24

This bit is ignored if ECM is in use.

1

Acceptable total error line ratio

0: 5%
1: 10%

If the error line ratio of a page exceeds the

acceptable ratio, RTN will be sent to the other

end.

This bit is ignored if ECM is in use.

2 Treatment of pages received

0: Pages received with errors are not printed.

with errors during G3 reception
0: Deleted from memory
without printing

1: Printed

3

Hang-up decision after
receiving a negative code
(RTN or PIN) during G3
immediate transmission

0: Sends the next page even if RTN or PIN is

received.

1: The machine will send DCN and hang up if it

receives RTN or PIN.

0: No hang-up
1: Hang-up

This bit is ignored for memory transmissions or if

ECM is being used.

4-7

Not used Do not change these settings.

Communication Switch 03

No FUNCTION COMMENTS

0

Maximum number of page

to

retransmission in a G3

7

memory transmission

00 - FF (Hex) times.

This bit is ignored if ECM is in use.

Communication Switch 04 - Not used (do not change any of these settings)
Communication Switch 05 - Not used (do not change any of these settings)

Communication Switch 06

No FUNCTION COMMENTS

0

Dialing requirements:
Germany

0: Disabled 1: Enabled

1

Dialing requirements: Austria

This function automatically sets these switches

to the required settings for each country after

selecting a country code (System Switch 0F).

0: Disabled 1: Enabled

2

Dialing requirements: Norway

0: Disabled 1: Enabled

4-26

30 November, 1999 BIT SWITCHES

Communication Switch 06

No FUNCTION COMMENTS

3 Dialing requirements:

Denmark

0: Disabled 1: Enabled

4 Dialing requirements: France

This function automatically sets these switches

to the required settings for each country after a

country code (System Switch 0F) is

programmed.

0: Disabled 1: Enabled

5

Dialing requirements:
Switzerland

0: Disabled 1: Enabled

6-7

Not used Do not change these settings.

Communication Switch 07 - Not used (do not change any of these settings)
Communication Switch 08 - Not used (do not change any of these settings)
Communication Switch 09 - Not used (do not change any of these settings)

Communication Switch 0A

No FUNCTION COMMENTS

0

Memory transmission
resumption point for redialing

0: From the error page

0: The transmission begins from the page where

transmission failed the previous time.

1: Transmission begins from the first page.
1: From page 1

1-6

Not used Do not change these settings.

7 Emergency calls using 999

0: Enabled 1: Disabled

If this bit is at 1, the machine will not allow you

to dial 999 at the auto-dialer.

Tables

Service

Communication Switch 0B - Not used (do not change any of these settings)
Communication Switch 0C - Not used (do not change any of these settings)

Communication Switch 0D

No FUNCTION COMMENTS

0

The available memory

to

threshold, below which ringing

7

detection (and therefore
reception into memory) is
disabled

00 to FF (Hex), unit = 2 KB

(e.g. 0C(H) = 24 KB)

One page is about 24 KB.

The machine refers to this setting before each

fax reception. If the remaining memory is below

this threshold, the machine cannot receive fax

messages.

If thi s setting rema ins at 0, the mac hine will

detect ringing signals and enter receive mode

even if there is no available memory. This will

result in communication failure.

4-27

BIT SWITCHES 30 November, 1999

Communication Switch 0E

No FUNCTION COMMENTS

0

Minimum interval between

to

automatic dialing attempts

7

06 to FF (Hex), unit = 2 s

(e.g., 06(H) = 12 s)

This value is the minimum time that the machine

waits before it dials the next destination.

Communication Switch 0F - Not used (do not change any of these settings)

Communication Switch 10

No FUNCTION COMMENTS

0

Memory transmission:

to

Maximum number of dialing

7

attempts to the same

01 - FE (Hex) times

destination

Communication Switch 11

No FUNCTION COMMENTS

0

Immediate transmission:

to

Maximum number of dialing

7

attempts to the same

01 - FE (Hex) times

destination

Communication Switch 12

No FUNCTION COMMENTS

0

Memory transmission: Interval

to

between dialing attempts to

7

the same destination

00 - FF (Hex) minutes

Communication Switch 13

No FUNCTION COMMENTS

0

Immediate transmission:

to

Interval between dialing

7

attempts to the same

00 - FF (Hex) minutes

destination

Communication Switch 14 - Not used (do not change any of these settings)
Communication Switch 15 - Not used (do not change any of these settings)
Communication Switch 16 - Not used (do not change any of these settings)

4-28

30 November, 1999 BIT SWITCHES

Communication Switch 17

No FUNCTION COMMENTS

0

Not used Do not change the settings.

1

SUB reception
0: Disabled 1: Enabled

0: Confidential reception to another maker’s

machine using the SUB (Sub-address) signal is

disabled.

2-7

Not used Do not change the settings.

Communication Switch 18 - Not used (do not change any of these settings)
Communication Switch 19 - Not used (do not change any of these settings)
Communication Switch 1A - Not used (do not change any of these settings)
Communication Switch 1B - Not used (do not change any of these settings)
Communication Switch 1C - Not used (do not change any of these settings)
Communication Switch 1D - Not used (do not change any of these settings)
Communication Switch 1E - Not used (do not change any of these settings)
Communication Switch 1F - Not used (do not change any of these settings)

Tables

Service

4-29

BIT SWITCHES 30 November, 1999

4.2.5 G3 SWITCHES

G3 Switch 00

No FUNCTION COMMENTS

0

Monitor speaker during
communication (TX and RX)

Bit 1 Bit 0 Setting

1

0 0 Disabled
0 1 Up to Phase B
1 0 All the time
1 1 Not used

2

Monitor speaker during
memory transmission

0: Disabled 1: Enabled

3-6

Not used Do not change these settings.

7

Back to back test

0: Disabled
1: Enabled

(0, 0): The monitor speaker is not in use

throughout communication.

(0, 1): The monitor speaker is on up to phase B

in the T.30 protocol.

(1, 0): Used for testing. The monitor speaker is

on throughout communication.

Make sure that you reset these bits after testing.

1: The monitor speaker is in use during memory

transmission.

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

back test.

115 V model: Be sure to connect jumpers JP5

and JP6 on the NCU and remove BR1 before

doing the test.

220 V model: Be sure to apply DC voltage

between wires L1 and L2 on the NCU.

G3 Switch 01

No FUNCTION COMMENTS

0-3

Not used Do not change these settings.

4 DIS frame length

0: No limit
1: 4 bytes

5

Not used Do not change this setting.

6

CED/ANSam emission

0: Enabled
1: Disabled

7

Not used Do not change this setting.

G3 Switch 02

No FUNCTION COMMENTS

0

G3 protocol mode used

0: Standard and non-standard
1: Standard only

1-4

Not used Do not change these settings.

5 Use of modem rate history

when dialing using
Quick/Speed dials

0: Disabled
1: Enabled

1: Only the first 4 bytes in the DIS frame will

transmit (set to 1 if there are communication

problems with PC-based faxes, which cannot

receive extended DIS frames).

Do not change these settings, unless the any

communication problem is caused by the

CED/ANSam (V.34) transmission.

1: Disables NSF/NSS signals (these are in non-

standard mode communication).

0: Communications using Quick/Speed dials

always start with the highest modem rate.

1: The machine uses the modem rate history for

communications with the same machine when

determining the most suitable rate for the

current communication.

4-30

30 November, 1999 BIT SWITCHES

G3 Switch 02

No FUNCTION COMMENTS

6 AI short protocol (transmission

and reception)

Refer to Appendix B in the Group 3 Facsimile

Manual for details about AI Short Protocol.

0: Disabled 1: Enabled

7

Not used Do not change this setting.

G3 Switch 03

No FUNCTION COMMENTS

0 DIS detection number

(Echo countermeasure)

0: 1
1: 2

1

Not used Do not change this setting.

2

V.8 protocol

0: Disabled
1: Enabled

0: The machine will hang up if it receives the

same DIS frame twice.

1: Before sending DCS, the machine waits for

the second DIS, caused by echo on the line.

0: V.8/V.34 communications will not be possible.

Note: Do not change this setting unless the line

condition is so poor the data rate slows to 14.4

kbps or lower.

3

ECM frame size

0: 256 bytes
1: 64 bytes

4

CTC transmission conditions

0: Ricoh mode (PPR x 1)
1: ITU-T mode (PPR x 4)

1: The machine transmit s with a f rame size of

64 bytes. Set this bit to 1 when the other

terminal only has a 64 byte frame size.

When using ECM, the machine will choose a

slower modem rate after receiving PPR once

(Ricoh mode) or four times (ITU-T mode).

This bit is ineffective in V.34 communications.

5

Modem rate for the next page
after receiving a negative code
(RTN or PIN)

0: No change 1: Fallback

6

Not used Do not change this setting.

7

Polarity change after DIS/NSF
detection

0: Disabled 1: Enabled

1: The TX modem ra te of the machine w ill fall

back before sending the next page if it receives

a negative code. This bit is ignored if ECM is in

use.

This bit should be set to ”1” only to deal with

communication problems caused by certain

types of exchanger.

Tables

Service

G3 Switch 04

FUNCTION COMMENTS

0

Training error detection

to

threshold

3

0 - F (Hex): 0 - 15 bits

If the number of error bits in the received TCF is

below this threshold, the machine informs the

sender that the training was successful.

4-7

Not used Do not change these settings.

4-31

BIT SWITCHES 30 November, 1999

G3 Switch 05

FUNCTION COMMENTS

0

Initial TX modem rate

to

Bit 3 2 1 0 Setting (BPS)

3

0 0 0 1 2.4 k
0 0 1 0 4.8 k
0 0 1 1 7.2 k

These bits set the initial starting modem rate for

transmission.

Use the dedicated transmission parameters if

you need to change this for specific receivers.
0 1 0 0 9.6 k
0 1 0 1 12.0 k
0 1 1 0 14.4 k
0 1 1 1 16.8 k
1 0 0 0 19.2 k
1 0 0 1 21.6 k
1 0 1 0 24.0 k
1 0 1 1 26.8 k
1 1 0 0 28.8 k
1 1 0 1 31.2 k
1 1 1 0 33.6 k
Other settings - Not used

4

Initial modem type for 9.6 k or

7.2 KBPS

to

Bit 5 Bit 4 Setting

5

These bits set the initial modem type for 9.6 k

and 7.2 kbps, if the initial modem rate is set at

these speeds.
0 0 V.29
0 1 V.17
1 0 Not used
1 1 Not used

6-7

Not used Do not change these settings.

G3 Switch 06

FUNCTION COMMENTS

0

Initial RX modem rate

to

Bit 3 2 1 0 Setting (BPS)

3

0 0 0 1 2.4 k
0 0 1 0 4.8 k
0 0 1 1 7.2 k
0 1 0 0 9.6 k
0 1 0 1 12.0k
0 1 1 0 14.4k
0 1 1 1 16.8 k
1 0 0 0 19.2 k
1 0 0 1 21.6 k
1 0 1 0 24.0 k
1 0 1 1 26.8 k
1 1 0 0 28.8 k

1 1 0 1 31.2 k
1 1 1 0 33.6 k
Other settings - Not used

The settings of these bits inform the transmitting

terminal of the available modem rate for the

receiving machine.

Use a lower setting if high speeds pose

problems during reception.

4-32

30 November, 1999 BIT SWITCHES

G3 Switch 06

FUNCTION COMMENTS

4

Modem types available for

to

reception

7

Bit 7 6 5 4 Setting

0 0 0 1 V.27ter

The settings of these bits inform the transmitting

terminal of the available modem type for the

receiving machine.

V.33 is an exclusive Ricoh mode (NSF).
0 0 1 0 V.27ter, V.29
0 0 1 1 V.27ter, V.29,
V.33
0 1 0 0 V.27ter, V.29,
V33, V17
0 1 0 1 V.27ter, V.29,
V.33, V.17, V.34
Other settings - Not used

G3 Switch 07

FUNCTION COMMENTS

0

PSTN cable equalizer
(TX mode)

1

Bit 1 Bit 0 Setting
0 0 None

0 1 Low
1 0 Medium
1 1 High

Use a higher setting if there is signal loss at

higher frequencies because of the length of wire

between the modem and the telephone

exchange.

Use the dedicated transmission parameters if

you need to change this for specific receivers.

Also, try using the cable equalizer if one or more

of the following symptoms occurs:

• Communication error

• Modem rate fallback occurs frequently.

Note: This setting is ineffective in V.34

communications.

2

PSTN cable equalizer
(RX mode)

3

Bit 3 Bit 2 Setting
0 0 None

0 1 Low
1 0 Medium
1 1 High

Use a higher setting 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.

Note: This setting is ineffective in V.34

communications.

4 PSTN external cable equalizer

Keep this bit at “1” in most cases.
(V.27ter, V.29, V.33/V.17, V.8
rx mode)

0: Disabled 1: Enabled

5

PSTN external cable equalizer
(V.34 rx mode)
0: Disabled 1: Enabled

Set this bit to 0 when the line quality is good.

(e.g. digital PABX)

The V.34 modem rate may decrease from

equalizer over correction.

6-7

Not used Do not change these settings.

Tables

Service

4-33