Ricoh FAX2500L SPECIFICATIONS 4500 f

RICOH FAX 4500F

SERVICE MANUAL

Lithium Batteries (Memory Back-up)

DANGER

INVISIBLE LASER RADIATION

WHEN OPEN AVOID DIRECT

EXPOSURE TO BEAM

CAUTION

LASER RADIATION WHEN
OPEN AVOID EXPOSURE
TO BEAM

VORSICHT

UNSICHTBARE LASERSTRAHLUNG,
WENN ABDECKNG GEOFFNET
NICHT DEM STRAHL AUSSETZEN

CAUTION:

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

CONTENTS

1. OVERALL MACHINE INFORMATION

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

1.2. FEATURES . . . . . . . . . . . . . . . . . . . . . 1-2

1.3. COMPONENT LAYOUT . . . . . . . . . . . . . . . . 1-5

1.4. OVERALL MACHINE CONTROL . . . . . . . . . . . . 1-5

1.5. VIDEO DATA PATH . . . . . . . . . . . . . . . . . . 1-6

1.5.1. Transmission . . . . . . . . . . . . . . . . . . . 1-6

1.5.2. Recept ion . . . . . . . . . . . . . . . . . . . . 1-6

1.6. Power Distributi on . . . . . . . . . . . . . . . . . . 1-7

1.6.1. Memory Back-up Circuit . . . . . . . . . . . . . . 1-7

2. DETAILED SECTION DESCRIPTIO N S

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

2.2. PRINTER . . . . . . . . . . . . . . . . . . . . . . 2-3

1. Laser Optics . . . . . . . . . . . . . . . . . . . 2-3

2. Paper Feed . . . . . . . . . . . . . . . . . . . . 2-3

3. Fusing Unit . . . . . . . . . . . . . . . . . . . . 2-5

2.3. PCBs AND THEI R FUNCTIONS . . . . . . . . . . . . . 2-7

2.3.1. FCU . . . . . . . . . . . . . . . . . . . . . . 2-7

3. INSTALLATION

3.1. INSTALLING OPTIONAL UNITS . . . . . . . . . . . . . 3-1

3.1.1. Lower Cassette . . . . . . . . . . . . . . . . . . 3-1

3.1.2. Hard Disk . . . . . . . . . . . . . . . . . . . . 3-2

3.2. INITIAL PROGRAMMING . . . . . . . . . . . . . . . 3-4

4. SERVICE TABLES AND PROCEDURES

4.1. SERVICE LEV E L FUNCTIONS . . . . . . . . . . . . . 4-1

4.1.1. Bit Switch Prog ramming (Function 01) . . . . . . . . . 4-1

4.1.2. System Parame te r L ist (Fun ction 02) . . . . . . . . . 4-2

4.1.3. Error Code Display (Fun ction 03) . . . . . . . . . . . 4-2

4.1.4. Service Monitor Report (Function 04) . . . . . . . . . 4-2

4.1.5. Protocol Dump (Fu nct ion 05) . . . . . . . . . . . . 4-2

4.1.6. RAM Display/Rewrite/P rintout (Function 06) . . . . . . 4-3

4.1.7. Checking the Coun te rs (Fu nct ion 07) . . . . . . . . . 4-4

4.1.8. Clearing the Coun te rs (Fu nct ion 08) . . . . . . . . . . 4-4

4.1.9. NCU Parameters (Function 09) . . . . . . . . . . . . 4-4

4.1.10. Modem/DTMF Tone Tests (Function 09) . . . . . . . . 4-5

4.1.11. Operation Panel Tests (Function 10) . . . . . . . . . 4-5

4.1.12. Scanne r Tests (Function 11) . . . . . . . . . . . . 4-6

4.1.13. Printe r Tests (Function 12) . . . . . . . . . . . . . 4-6

4.1.14. RAM Tests (Function 13) . . . . . . . . . . . . . . 4-7

4.1.15. Service Station Telephone Numbe r (Fun ction 14) . . . . 4-7

4.1.16. Serial Numbe r (Fu nct ion 15) . . . . . . . . . . . . 4-8

4.1.17. File Transfer (Funct ion 16 ) . . . . . . . . . . . . . 4-8

4.1.18. Hard Disk Initialization (Function 17) . . . . . . . . . 4-8

4.1.19. Group 4 Commu nica tion Parameters (Function 18) . . . 4-8

4.1.20. Programming th e CSI (Function 19) . . . . . . . . . 4-9

4.1.21. Setting the Teleph on e L ine Type (Function 20 ) . . . . . 4-9

4.2. BIT SWITCHES . . . . . . . . . . . . . . . . . . . 4-10

4.3. NCU PARAMETERS . . . . . . . . . . . . . . . . . 4-27

4.4. DEDICATED TRANSMISSION PARAMETERS . . . . . . . 4-43

4.4.1. Programming Procedure . . . . . . . . . . . . . . 4-43

4.4.2. Parameters . . . . . . . . . . . . . . . . . . . 4-44

4.5. SERVI CE RAM ADDRESSES . . . . . . . . . . . . . . 4-47

4.6. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . 4-51

4.7. PM TABLE . . . . . . . . . . . . . . . . . . . . . 4-52

5. REPLACEMENT AND ADJUSTMENT

5.1. SCANNER . . . . . . . . . . . . . . . . . . . . . 5-1

5.1.1. Xenon Lamp . . . . . . . . . . . . . . . . . . . 5-1

5.2. DEVELOPMENT . . . . . . . . . . . . . . . . . . . 5-1

5.2.1. Develop men t Unit . . . . . . . . . . . . . . . . . 5-1

5.3. PCBs . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.3.1. Operation Panel PCB [D] . . . . . . . . . . . . . . 5-1

6. TROUBLESHOOTING

6.1. SERVICE CALL CONDITIONS . . . . . . . . . . . . . 6-1

6.2. ERROR CODES . . . . . . . . . . . . . . . . . . . 6-3

OVERALL MACHINE INFORMATION June 19th, 1993
SPECIFICATIONS

1. OVERALL MACHINE INFORMATION

1.1. SPECIFICATIONS

Type

Desktop transceiver

Circuit

PSTN, PABX

Connection

Direct couple

Document Size
Length: 105 - 1200 mm [4.1 - 47.2 ins]

Up to 100 m [328 ft] after adjustment

Width: 148 - 304 mm [5.8 - 12.0 ins]
Thickness: ADF 0.05 to 0.2 mm

Manual Feed 0.04 to 0.4 mm

Document Feed

Automatic feed, face down

ADF Capacity

50 sheets (using 80 g/m

Scanning Method

Flat bed, with CCD

Maximum Scan Width

296 mm [11.7 ins] ± 1%

Scan Resolution
Main scan: 200 dpi
Sub scan:

Standard 100 dpi
Detail 200 dpi
Fine 400 dpi

Memory Capacity
ECM: 128 kbytes (double buffer)
SAF: Base machine - 1 Mbyte (62 pages),

with optional extra 1 Mbyte or 2 Mbytes
(max 123 or 185 pages respectively), or 20
Mbyte hard disk (1,200 pages total)

Compression

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

2

paper)

Data Rate

14,400/12,000/9,600/7,200/4,800/2,400 bps;
automatic fallback

I/O Rate

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

Transmission Time

6 s at 14,400 bps (G3 ECM) for a CCITT #1
test document (Slerexe letter) using stand­ard resolution

Printing System

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

Paper Size
Standard Cassette

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

Lower Cassette

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

Maximum Printout Width

210 mm [8.3 ins]
250 mm [9.8 ins] if a lower cassette is in­stalled

Maximum Printer Resolution
Main scan: 400 dpi
Sub scan: 400 dpi

Power Supply

220 - 240 Vac, 50 Hz

Power Consumption (Base Machine Only)
Standby: 25 W Transmit: 35 W
Receive: 250 W Copying: 290 W

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

Dimensions (W x D x H)

496 x 477 x 305 mm [19.5 x 18.8 x 12.0 ins]
Excluding handset, trays, and optional units

Modulation

V.33/V.17 (TCM), V.29 (QAM), V.27ter
(PHM), V.21 (FM)

Protocol

Group 3 with ECM, Group 4 kit available

Weight

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

1-1

June 19th, 1993 OVERALL MACHINE INFORMATION

FEATURES

1.2. FEA TURES

KEY: O = Used, X = Not Used,

A = With optional memory or hard disk only,
B = With lower cassette only,
C = With Group 4 kit only,
G = Not used in Germany,
S = Service mode in some countries

Equipment

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

Video Processing Features

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

Communication Features - Auto

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

Communication Features -

User Selectable

Action as a transfer broadcaster A
AI Redial O
Alternative Destination X
Answering machine X
Authorized Reception O
Auto-answer delay time X
Auto dialling (pulse or DTMF) O
Auto Document X
Automatic Voice Message X
Auto-note X
Batch Transmission (max 200

batches)
Broadcasting O
Chain Dialling O
Communication Result Display O
Confidential ID Override O
Confidential Transmission O
Direct Fax Number Entry O
Economy Transmission O
Economy Transmission Time O
Forwarding (5 stations) A
Free Polling O
Groups (10 groups) O
Group Transfer Station O
Hold X
ID Transmission Option O
Immediate Redialling O
Immediate transmission O
Keystroke Programs O
Mailbox X
Memory transmission (this is the

default mode)
Multi-step Transfer O
Next Transfer Station C
Notify X
On Hook Dial O (G)
Page Count O
Personal Codes O
Personal Codes with Conf ID O
Polling Reception O
Polling Transmission O
Polling tx file lifetime in the SAF O
Quick Dial (32 stations) O

O

O

1-2

OVERALL MACHINE INFORMATION June 19th, 1993
FEATURES

Communication Features -

User Selectable

Reception modes (Fax, Tel,
Reduction O
Remote control features X
Remote Transfer X
Restricted Access (50 codes,

without cards)
Secured Polling O
Secured Polling with Stored ID

Override
Secure Transmission O
Send Later O
Silent ringing detection X
Speed Dial (100 stations) O
Telephone Directory O
Tonal Signal Transmission O
Transfer Request O
Transmission Deadline O
Turnaround Polling X
Two- step Transfer C
Voice Request (immed. tx only) O

Communication Features -

Service Selectable

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

Auto) O

O

O

Other User Features

Area Code Prefix O
Auto Service Call O
Center mark O
Chequered mark O
Clearing a memory file O
Clearing a polling file O
Clock O
Confidential ID O
Copy mode O
Counters O
Country code O
Destination Check O
Direct entry of names O
Function Programs O
ID Code O
Label Insertion O
Language Selection O
LCD contrast control Service
Memory Lock A
Memory Lock ID A
Modifying a memory file X
Multi Sort Document Reception A
Multicopy mode A
Night Timer O
Own telephone number O
Printing a memory file O
RDS on/off O
Reception Mode Switching Timer X
Reception Time (non-memory rx

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

O

1-3

June 19th, 1993 OVERALL MACHINE INFORMATION

FEATURES

Reports - Automat ic

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

Reports - User-initiated

Authorized Reception List O
Charge Control Report X
File List O
Forwarding List A
Group List O
Personal Code List O
Program List O
Quick Dial List O
Specified Cassette Selection List B
Speed Dial List O
Journal O
Transmission Status Report X
User Function List O
User Parameter List O

Service Mode Features

Operation panel test O
Printer mechanism test X
Printer test patterns O
Programmable attenuation X
Protocol dump list O
RAM display/rewrite O
RAM dump O
RAM test O
Ringer test X
Scanner lamp test O
Scanner mechanism test O
Sensor initialization X
Serial number O
Service monitor report O
Service station number O
System parameter list O
Technical data on the Journal O
Thermal head parameters X
Transmission Status Report X

Memory Files

Max. number of files: 200
Max. number of stations/ file : 20 0
Max. number of stations ove rall: 500
Max. number of pages overall: 1, 200

Service Mode Features

Back-to-back test O
Bit switch programming O
Buzzer test O
Cable equalizer O
Comm. parameter display O
Counter check O
DTMF tone test O
Echo countermeasure O
Error code display O
File Transfer O
LCD contrast adjustment O
Memory file printout (all files) O
Modem test O
NCU parameters O

1-4

OVERALL MACHINE INFORMATION June 19th, 1993
COMPONENT LAYOUT

1.3. COMPONENT LAYOUT

The only diff ere nce is in the document width se nso r, which has an A3-width
sensor and a B4-width se nso r. See section 2 for a drawing.

1.4. OVERALL MACHINE CONTROL

HandsetLine

SBU

(CCD)

Scanner
Sensors

Operation

Panel

NCU

CONTROL SIGNALS

Video Processing

Memory

Video

Processor

Speaker

Modem

CPU

DATA AND ADDRESS BUS

PSU

Port

Scanner and Printer Drive

Components and Sensors

FCU

I/O

RS-232C

Interface

Laser

Interface

Page

Memory

SAF

Memory

ECM

Memory

RAMROM

MBU

Laser Diode Driver
Main Scan Start Detector
Interlock Switch

The cpu on the FCU board controls the machine, as shown in the above
drawing. There is no modem board in th e machine; the modem consists o f a
chip on the FCU board that carries out all the analog and digital functions of a
fax modem.

1-5

June 19th, 1993 OVERALL MACHINE INFORMATION

VIDEO DATA PATH

1.5. VIDEO DATA PATH

1.5.1. Transmission

Original

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

Xenon

Lamp

ECM

Memory

Line

Buffer

SAF

Memory

RAM

MBU

FIFO

Analog Signal

Video

Processor

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

CCD

CPU

Modem

FCU

To the

Network

(via the NCU)

1.5.2. Reception

Reference:

Group 3
Facsimile
Manual,
section
1-3-2

From the

Network

(via the NCU)

Line

Buffer

RAM

MBU

FCU

Memory

SAF

FIFO

Filter

HYBRID IC

Memory

ECM

Page

Memory

Laser Diode

Modem

CPU

Laser

Interface

Laser Diode

Driver

1-6

Copy Paper

OVERALL MACHINE INFORMATION June 19th, 1993
Power Distribution

1.6. Power Distribution

1.6.1. Memory Back-up Circuit

Reference:

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

+5V

Voltage

Detector

+24V

[A]

+5V

Switching

Circuit

Regulator

MBU

RAM

1-9

1-7

Battery

Switch

Battery

Switching

Circuit

FCU

17-9

17-7

Real Time

Clock

CPU

Memory

Monitor

SAF

Memory

[B]

Battery

The battery [A] on the MBU backs up the RA M on the MBU, which con ta ins
system parameters. It also backs up the rea l time clock in t he cpu . This bat­tery is not rechargeable. CN1-7 te lls the cpu whe th er the ba ck-up powe r
(CN1-9) comes from the battery or fro m t he +5 V power supply.

A rechargeable battery [B ] on the FCU board backs up the SAF memo ry and
the real time clock for 1 hour. While the main power is on, the +24V supply re­charges the battery. There is no battery switch.

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

1-7

DETAILED SECTION DESCRIPTIONS June 19th, 1993
SCANNER

2. DETAILED SECTION DESCRIPTIONS

2.1. SCANNER

Document Table

Reference:

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

• The scanner is A3-width [11.7"], with a B4 document widt h d etector [A]

[A]

[B]

and an A3 document width sensor [B] .

Resolution

This machine scans in dots per inch , to meet Group 4 stand ards. The various
scan resolutions are ach ieved as follows.

Standard - Immediate transmission: The tx motor feeds the documen t a t 200
lines per inch. The video processor executes OR processing t o co nve rt t he
data into 100 lines per inch .
Memory transmission: The motor feeds the docu men t at 10 0 lines per in ch,
and no OR processing is needed.
Detail - The tx motor fee ds th e do cument at 200 lines pe r in ch. There is no
OR processing, and the da ta is transmitted at 200 lines pe r inch.
Fine - The tx motor feeds the documen t and tra nsmits data at 400 lines per
inch. If the other t ermin al cannot receive at this resolut ion , alternate lines of
data are deleted, so the effective resolution of the transmitted da ta is 200
lines per inch.

2-1

June 19th, 1993 DETAILED SECTION DESCRIPTIONS

SCANNER

Document Jam Conditions

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

• The scan line sensor does not switch on within 5 s of the tx motor start-

ing.

• The scan line sensor does not turn off afte r t he maximum do cume nt

length has been fed since it turn ed on; this is 12 s (stan da rd reso lut ion),
24 s (detail), or 48 s (fine) for a 1.2 m long document.

• The scan line sensor switches on while the document sensor is off.

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

off.

• The scan line sensor does no t tu rn on within 2 s of the end of stamping,

if the document senso r is on.

2-2

DETAILED SECTION DESCRIPTIONS June 19th, 1993
PRINTER

2.2. PRINTER

1. Laser Optics

Hexagonal mirror motor speed: 9, 26 7. 7 rpm (G3 and G4 l/mm mod e), 9448. 8
rpm (G4 dpi mode)

2. Paper Feed

Page Separation and Data Reducti on

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

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

fit on the copy paper. However, data will only be redu ced if the leng th of th e
incoming page is between 5 mm shorter and a certain maximum length. This
maximum incoming page lengt h that can be reduced depen ds on the co py pa­per size and on the reduction ratio sto red in RAM addresses 00014F and

000150.
Each paper size can be progra mmed wit h a sep arate reduction ratio. In ea ch

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

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

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

Bit in
00014F

Bit in 000150 0 0 1 1

0: Not used 1: 4/3 0: 8/7 1: 12/11

2-3

June 19th, 1993 DETAILED SECTION DESCRIPTIONS

PRINTER

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

Copy

Paper Type

A5 148 190.7 163.4 156
B5 182 236 202.3 193.1
Letter 279.4 365.9 313.6 299.3
A4 297 389.3 333.7 318.5
F4, F 330.2 433.6 371.7 354.8
Legal 355.6 467.5 400.7 382.5
B4 364 478.7 410 391.6

Copy Paper

Length

Maximum reducable incoming page lengths

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

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

(Copy Paper Length - 5) x Reduction Ratio

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

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

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

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

coming page is up to x mm longer than the copy pa pe r, the excess portion
will not be printed. The value of x can be from 0 to 15 mm. It is determined by
the setting of RAM address 00015 1 (cop y mode : bit s 3 to 0, receive mode :
bits 7 to 4; bits 3 and 7 are the most signif icant bits).

Hex value Value of x

0 0
1 1

and so on until

15 15

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

2-4

DETAILED SECTION DESCRIPTIONS June 19th, 1993
PRINTER

3. Fusing Unit

Fusing Unit Control Temperatures

Stancby temperature: 80 °C
Printing start temperature: 150 °C
Maximum printing temperat ure : 17 0 °C (monitored by a comparato r )
Thermistor maximum: 280 °C
Thermostat maximum: 400 °C

FUSING UNIT

Fusing

Lamp

Thermistor

36-2

+5V

36-1

LIVE

NEUTRAL

170 C [A]

4-1,4

4-3,6

36-3

I/O

Port

PSU

AC Switching

Circuit

3-1

36-4

3-2

1-8

Main

Power

Supply

1-7

FCU

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

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

• The signal from the compa r at or [A] remains high if the fusing unit tem-

perature is below 170 °C.

• The I/O Port switches th e fu sing unit on/off usin g the signal on CN1-8.

• If the thermistor is accidentally disconnect ed, th e link betwe en CN3 6-3

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

2-5

June 19th, 1993 DETAILED SECTION DESCRIPTIONS

PRINTER

Standby mode

• If the fusing lamp is belo w 8 0 °C, th e I/ O Po rt makes CN1-8 go high.

This switches on the fusing lamp.

• If the fusing lamp goes above 80 °C, CN1-8 goes lo w, which switches

off the fu sing lamp.

Printing

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

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

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

rises above 170 °C, the output from the comp arator changes state. This
causes CN1-8 to go low, which switches off the fusing lamp.

• If the comparator fails, there are additional safety cutoffs at 280 °C (th er-

mistor) and at 400 °C (thermostat).

After printing

• When the fusing lamp temp erature falls back below 150 °C, th e ozo ne

fan switches off.

Service Note

When an error occurs, the I/O Port switches off the fusing lamp by raising
CN1-7 to high. The print er will b e d isab led , a nd an Auto Service Call will be
sent to the service station (t he me ssag e will be HOT ROLLER DOWN). De­tails concerning these erro rs are give n in section 6-1 (Service Call Condi­tions).

2-6

DETAILED SECTION DESCRIPTIONS June 19th, 1993
PCBs AND THEIR FUNCTIONS

2.3. PCBs AND THEIR FUNCTIONS

2.3.1. FCU

HandsetLine

SBU

(CCD)

Scanner
Sensors

Operation

Panel

Speaker

CONTROL SIGNALS

Video Processing

Memory

Video

Processor

Modem

NCU

CPU

HIC

PSU

Port

Scanner and Printer Drive
Components and Sensors

FCU

I/O

RS-232C

Interface

MBU

DATA AND ADDRESS BUS

Laser

Interface

Page

Memory

SAF

Memory

ECM

Memory

RAMROM

Laser Diode Driver
Main Scan Start Detector
Interlock Switch

2-7

June 19th, 1993 DETAILED SECTION DESCRIPTIONS

PCBs AND THEIR FUNCTIONS

1. CPU (MFCP)

• 65C02 compatible microprocessor

• Interrupt control

• DMA control

• Data compression and re con struction (high speed MH coding fo r 2. 8-

second scanning)

• Real time clock (battery backed-up)

• Memory control

• Control of all mechanisms (dire ctly or th rou gh othe r chip s)

• NCU control (through the I/O Po rt)

2. I/O Port (MIOP)

• Clock control

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

• Tone detection

• Motor drive

• Operation panel con tro l

• Laser Interface control

3. Laser Interface (LIF)

• Page memory control

• Laser diode contro l

• Smoothing

4. Modem

• Modulation/demodulation (analog and digital operations)

5. Video Process or (VP P )

• Analog/digital vide o sign al processing

6. Hybrid IC (HIC)

• Filters

• Amplifiers

7. RAM

• 256k for ECM and system RAM (no back-up)

• 1 Mbyte SAF memory (with battery back-up)

• 1 Mbyte page memory

• 24 kbyte image memory for th e VPP

2-8

INSTALLATION August 19th, 1992
INSTALLING OPTIONAL UNITS

3. INSTALLA TION

3.1. INSTALLING OPTIONAL UNITS

Up to 4 of these paper feed units can be added

3.1.1. Lower Cassette

Machine

Drawers

to the machine. However, if more than one is in­stalled, you have to install drawer and base
units in one of the following ways.

Paper
Feed
Units

Base

2 Paper

Feed Units

3 Paper

Feed Units

4 Paper

Feed Units

3-1

[D]

[C]

August 19th, 1992 INSTALLATION

INSTALLING OPTIONAL UNITS

3.1.2. Hard Disk

SAF Memory Initialization

1. Function 6 0 1 9 9 1 then immediately Yes

2. 0 1

3. Set bit 2 of bit switch 00 to 1.

4. Yes Function

Installation Procedure

Switch off the power and unplug the machine from the wall socket. Then re­move the cassettes.

[B]

[A]

[F]

[G]

[E]

3-2

[H]

INSTALLATION August 19th, 1992
INSTALLING OPTIONAL UNITS

[ I ]

[J]

Before attaching [K], re­move the side covers of
the paper feed unit.
Then, after attaching [K],
put the covers back.

[K]

[O]

[N]

[M]

Change the ROM [M]
on the HDIF board be­fore reassembling the
hard disk unit.

Caution: Do not plug in or switch on until everything is connected up.

[L]

3-3

August 19th, 1992 INSTALLATION

INITIAL PROGRAMMING

Software Initialization

1. Function 6 0 1 9 9 1 , then immediately Yes

2. 0 1

3. Set bit 0 of bit switch 0D to 1.

4. Yes Function

5. Tu rn off the power, the n tu rn on the power after a fe w seconds.

3.2. INITIAL PROGRAMMING

Check the following:

• Are the country codes for NCU parameters (Fun ctio n 09, parame te r 00)

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

• Are the NCU jumper settings correct for th e cou nt ry of inst allation?

• Do any bit switch or other setting s have to be chan ge d to match line

conditions or user requirements?

• Have the correct operation pane l deca ls a nd Quick Dial sheets been in-

stalled from the language kit?

• Have you programmed th e serial number (Function 15, sect ion 4-1-18)?

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

• Telephone Line Type (Function 19, section 4-1 - 23 )

• CSI (Function 20, section 4-1-2 2)

The user should program the follo wing items after installation :

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

• RTI, TTI, and CSI (in some coun trie s, CSI is not a u ser a dju stme nt)

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

• The fax machine’ s own telephone number

• Country code

• Area code prefix (if applicable)

• Date and Time

• Language Selection

3-4

SERVICE TABLES AND PROCEDURES June 19th, 1993
SERVICE LEVEL FUNCTIONS

4. SERVICE TABLES AND PROCEDURES

4.1. SERVICE LEVEL FUNCTIONS

To enter service mode, press the following sequence of keys:

Function 6 0 1 9 9 1

then immediately Yes

SERVICE FUNCTION NO. _
01BIT SW. 02PARA LIST

03ERROR CODE 04SVC MONITOR

4.1.1. Bit Switch Programming (Function 01)

1. After entering se rvice mode,
press 0 1

BIT SWITCH

DF: 00000000
SW:00 00000000

Bit 7 is displayed at the left , an d bit 0 at the right. The de fa ult settings are
shown on the top line, and the current settings on the bottom.

2. • Increment bit switch: ↓

• Decrement bit switch: ↑

Example:
Display bit switch 3: ↓ x 3

BIT SWITCH

DF: 00000000

3. Adjust the bit switch.
Example: To change the value of
bit 7, press 7

4. Either:

• Adjust more bit switches - go to step 2.

• Finish - Yes

SW:03 00000000

BIT SWITCH

DF: 00000000
SW:03 10000000

4-1