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SERVICE MANUAL
PC-FAX EXPANDER TYPE 250
February 9th, 1998
Subject to change
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TABLE OF CONTENTS
1. OVERALL INFORMATION............................................................1-1
1.1 SPECIFICATIONS.....................................................................................1-1
1.2 FEATURES................................................................................................1-1
2. DETAILED DESCRIPTIONS..........................................................2-1
2.1 AT COMMANDS AND RESPONSES........................................................2-1
2.1.1 Class 0 commands ...........................................................................2-1
2.1.2 Class 2 commands ...........................................................................2-1
2.2 CLASS 2 FAX COMMUNICATION............................................................2-3
2.2.1 Direct transmission ...........................................................................2-3
2.2.2 Memory transmission........................................................................2-3
2.2.3 Direct reception.................................................................................2-4
2.2.4 Memory reception.............................................................................2-4
2.3 SCANNING AND PRINTING.....................................................................2-5
2.3.1 Scanning...........................................................................................2-5
2.3.2 Printing..............................................................................................2-5
3. INSTALLATION .............................................................................3-1
4. SERVICE TABLES AND PROCEDURES.....................................4-1
4.1 SERVICE MODE FUNCTIONS.................................................................4-1
4.1.1 PC protocol dump list........................................................................4-1
4.2 BIT SWITCHES.........................................................................................4-1
4.3 USER PARAMETERS...............................................................................4-1
5. PARTS LIST...................................................................................5-1
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25 February 1998 SPECIFICATIONS
1. OVERALL INFORMATION
1.1 SPECIFICATIONS
Item Description
PC Fax Interf ace EIA/TIA Class 2
(Class 1 is not supported)
Host Interface Connector EIA/TIA RS232C
DB25 female connector
Scan ner TWA IN interface
Maximum resolution: 200 x 200 dpi
1.2 FEATURES
Class 2 fax transmission directly from a host PC
(PC fax application required)
Class 2 fax transmission through SAF memory
(PC fax application required)
Class 2 fax reception directly to a host PC
(PC fax application required)
Class 2 fax reception through SAF memory
(PC fax application required)
Local printing from a PC fax application
(PC fax application required)
Local scanning from the machine’s scanner using TWAIN API
(CFM Twain driver required)
1-1
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25 February 1998 AT COMMANDS AND RESPONSES
2. DETAILED DESCRIPTIONS
2.1 AT COMMANDS AND RESPONSES
2.1.1 CLASS 0 COMMANDS
Command Function Remarks
ATA Answer
ATD Dial
ATE Comma nd echo
ATH Switch-hook control
ATI Identification
ATL Speaker volume
ATM Speaker control
ATP Set pulse dial as default
ATQ Result code display
ATS S register
ATT Set tone dial as default
ATV Result code form
ATX Extended result codes The machine returns OK,
ATZ Reset
AT&C DCD option
AT&D DTR option
AT&F Restore factory configuration
The machine returns OK,
but the function is not
supported.
but the function is not
supported.
The machine returns OK,
but the function is not
supported.
2.1.2 CLASS 2 COMMANDS
Command Function Remarks
AT+FCLASS? Ser vi ce c las s The machi ne r esp onds
“22”.
AT+FMFR? Identify manufacturer The machine responds
“RICOH(CF1)”.
AT+FLID Local ID string
AT+FBOR Phase C data bit order
AT+FCR Capability to receive The machine returns OK,
but the function is not
supported.
AT+FDCC DCE capability parameters
AT+FDI S Current ses sion param et er s
AT+FDT Data transmission
AT+FET Transm it page punctua t ion
AT+FDR Phase C receive data
AT+FMDL? Identify model The machine responds
“PC-FAX EXPANDER
(CF1)”.
2-1
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AT COMMANDS AND RESPONSES 25 February 1998
Command Function Remarks
AT+FREV? Identify revision The machine responds
with FCU ROM version
and release date.
AT+FAA Adaptive answer
AT+FPHCTO Phase C timeout
AT+FECM ECM parameter
AT+FBUG Session manager reporting
parameter
AT+FPTS Page transfer status
AT+FAXERR Fax error value The machine returns OK,
AT+FDCS Current session results
AT+FCQ Copy quality capability parameter The machine returns OK,
AT+FK Session termina ti o n
+FHNG Call termination with status
+FCON Facsimile connection response
+FCSI Report the CSI
+FTSI Report the TSI
+FCFR Indicate CFR
The machine returns OK,
but the function is not
supported.
but the function is not
supported.
but the function is not
supported.
2-2
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25 February 1998 CLASS 2 FAX COMMUNICATION
2.2 CLASS 2 FAX COMM UNI CATION
2.2.1 DIRECT TRANSM ISS ION
SAF
DCR
IBM Compatible
FCU
ModemDIU
NCU
A824D001.WMF
The host computer sends commands and image data to the machine through the
DIU during transmission.
NOTE:
1) Group dials programmed in the machine cannot be used.
2) ISDN G4 numbers programmed in quick or speed dials cannot be used.
3) If ISDN is selected for G3 communication (system switch 0A, bit 6), the
G3 numbers must have been programmed in quick or speed dial.
4) T.30 optional protocols (e.g., BFT) are not supported by class 2 fax
communication.
2.2.2 MEMORY TRANSMISSION
SAF
FCU
DCR
ModemDIU
IBM Compatible
NCU
A824D002.WMF
The host computer sends destination number(s) and image data to the machine
through the DIU during transmission. The machine stores the image in the SAF
memory, then makes a fax transmission.
NOTE:
1) If the memory overflows while storing the first page into SAF memory,
the machine does not start the transmission.
2) If the memory overflows while storing the second or subsequent page
into SAF memory, the machine transmits all the successfully stored
pages.
3) When fax numbers programmed in the machine’s quick or speed dials
are specified using the PC fax application, all the specified numbers
must have been programmed in the fax machine.
4) T.30 optional protocols (e.g., BFT) are not supported by class 2 fax
communication.
2-3
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CLASS 2 FAX COMMUNICATION 25 February 1998
2.2.3 DIRECT RECEPTION
SAF
DCR
IBM Compatible
FCU
ModemDIU
NCU
A824D003.WMF
The machine transfers received image data directly to the host PC without storing it
into SAF memory.
NOTE:
1) If the host PC is not ready to receive a fax message, the machine
receives the message into SAF memory.
2) Even if the SAF memory is full, the machine starts fax reception.
However, the machine will not continue reception if the host computer is
not ready to receive a message.
3) The “Number of rings to answer” parameter in the PC fax application
must not exceed 4.
2.2.4 MEMORY RECEPTION
SAF
DCR
IBM Compatible
FCU
ModemDIU
NCU
A824D004.WMF
The machine receives a fax message in the SAF memory, then transfers data to
the host computer after the reception has finished. The machine prints the received
message after transferring data to the host if user parameter 20 – bit 4 is set to “1:
Print”.
NOTE:
1) If an error occurs due to cable disconnection, the PC fax application
must be restarted to receive the message.
2) Memory reception is not possible when forwarding is enabled.
3) Manual reception from the PC fax application is not supported.
4) The “Number of rings to answer” parameter in the PC fax application
must not exceed 4.
2-4
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25 February 1998 SCANNING AND PRINTING
2.3 SCANNING AND PRINTING
2.3.1 SCANNING
Scanner
Application
Twain Driver
Serial Port
Page Memory
DCRDIU
IBM Compatible
A824D005.WMF
FCU
The machine scans an original into page memory, then transfers the data to the
host PC. The data is sent to the application through the CFM Twain driver.
NOTE:
1) The maximum resolution is 200 x 200 dpi.
2.3.2 PRINTING
Printer Engine
FCU
Page Memory
DCRDIU SAF
IBM Compatible
A824D006.WMF
The machine receives print data into SAF memory as fax image data, then prints it
after all the data has been transferred from the host PC.
The destination number “0000” informed from the host PC identifies a print job.
NOTE:
1) If SAF memory runs out while receiving print data, the machine prints up
to the successfully received data.
2) The machine cannot receive print data while printing a message from
the SAF memory. The data will be received after printing.
3) If a fax destination is specified together with the print destination “0000”,
the destinations specified after “0000” will be delayed until the machine
prints all pages in the message.
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25 February 1998 SCANNING AND PRINTING
3. INSTALLATION
THIS OPTION MUST BE INSTALLED BY A CUSTOMER SERVICE REPRESENTATIVE
WHO HAS COMPLETED THE TRAINING COURSES ON THE BASE COPIER AND
THIS OPTION.
NOTE:
1) Never install telephone wiring during a lightning storm.
2) Never install telephone jacks in wet locations unless the jack is
specifically designed for wet locations.
3) Never touch uninsulated telephone wires or terminals unless the
telephone line has been disconnected at the network interface.
4) Use caution when installing or modifying telephone lines.
5) Avoid using a telephone (other than a cordless type) during an electric
storm. There may be a remote risk of electric shock from lightning.
6) Do not use an telephone to report a gas leak in the vicinity of the leak.
CAUTION
Before installing this option, switch off the main and ac switches, and
disconnect the power cord.
[A]
A225I601.CDR
[C]
A225I602.CDR
1. Remove the rear cover [A] (6 screws).
2. Remove the bracket [B] (2 screws), or the fax unit [C] if it has been installed in
the machine (13 screws, 2 brackets, 2 connectors).
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[B]
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SCANNING AND PRINTING 25 February 1998
[E]
[D]
A225I603.CDR
[F] [G]
A225I604.CDR
3. Remove the cover [D] from the left side cover.
4. Remove the ISDN G4 interface from the fax unit if it is present (2 screws, 1
connector).
5. Remove two hexagonal screws [E] from the DIU.
6. Install the DIU (RS232C interface) [F] in the fax unit (4 screws, 2 of them are
the hexagonal screws removed in the previous step).
7. Connect the harness [G] from the DIU to CN506 on the FCU as shown, and put
back the ISDN G4 interface if it was removed in step 4.
8. Install the fax unit [C] (13 screws, 2 brackets, 2 connectors), and the rear cover
[A] (6 screws).
9. Turn on the machine and print the system parameter list. If “TR29” appears in
the “Option” section of the system parameter list, go on to step10. Otherwise,
check the ROM version or the cable connections.
FCU ROM Versions which support this option
A1945582H or later
A1945585E or later
A1945587B or later
A2255582C or later
A2255585C or later
A2255587B or later
10. Follow the Operator’s Manual for how to connect the machine to a host
computer, how to set up the machine and the computer, if required.
NOTE:
1) A “straight-through” shielded serial cable is required, but it is not
enclosed in this option.
2) One end of the serial cable must have a DB25 male type connector
to be connected to the DIU.
3-2
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25 February 1998 SERVICE MODE FUNCTIONS
4. SERVICE TABLES AND PROCEDURES
4.1 SERVICE MODE FUNCTIONS
4.1.1 PC PROTOCOL DUMP LIST
Use this function to check the AT commands and responses that are exchanged
between a host computer and the machine.
Refer to section 2.1 for details of the supported AT commands.
1. Enter service mode, and select 05 “Protocol Dump”.
2. Select 3 “PC Protocol List”, then press Start.
4.2 BIT SWICTHES
System Switch 1C
No FUNCTION COMMENTS
0
PC-DIU communication
record on the Journal
0: Disabled
1: Enabled
1
Not us ed Do not change the setti ngs.
to
7
1: Communications between the DIU and a host
PC are logged on the Journal. Also, the Data-in
LED turns on while data is coming in and going
out to the PC.
Be sure to reset this bit to “0” after a test.
4.3 USER PARAMETERS
User Switch 20
No FUNCTION COMMENTS
0
Class 2 transmission
0: Direct tx
1: Memory tx
1 Addition of fax TTI in class 2
memory tran s mis sion
0: Disabled
1: Enabled
2
Message received to:
0: Fax
1: PC
0: Image data is se nt di rec tl y fr om a hos t d ur i ng
communic ati o n.
1: Image data is sent to the fax machine’s SAF
memory before starting a fax communication,
then it is sent by the fax machine.
1: The machine adds its TTI to all the messages
sent through SAF memory.
This setting is effective only when bit 0 is set to
“1”.
0: Received messages are pr i nt ed at the
machine.
1: Received messages are transferred to the host
PC.
4-1
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USER PARAMETERS 25 February 1998
User Switch 20
No FUNCTION COMMENTS
3
Class 2 reception
0: Direct rx
1: Memory rx
4
Message printout in class 2
memory rx
0: Disabled
1: Enabled
5
Checker ed mar k on pr i ntouts
from a PC
0: Disabled
1: Enabled
6
Not us ed Do not change the setti ngs.
to
7
0: Received messages are transferred to the host
PC directly during fax communication.
1: Received messages are stored in the SAF
memory during reception. Then they are
transferred to the host PC after reception has
been completed.
1: A message received into memory is printed
after it has been transferred to the host PC.
1: The machine prints a checkered mark on a
document printed through the DIU.
User Switch 21
No FUNCTION COMMENTS
0
Scan density for the “Light” setting in scanner mode.
to
to
1
3
0
=
0
0
4
Scan density for the “Dark” setting in scanner mode.
1
7
0
=
1
0
0
1
1
=
0
0
0
1
5
=
1
0
1
1
2
0
0
3
LevelLevelLevel =
1
1
6
=
1
0
7
LevelLevelLevel
4-2
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25 February 1998 USER PARAMETERS
5. PARTS LIST
Index Part Nu m ber Name Q’ ty/Unit
1 A2255172 PCB - DIU 1
2 A2255290 Harness – DIU-FCU 1
3 04513006B Scre w – M3 x 6 3
5-1
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