Ricoh Mp C3000 Service Manual

							Bit Switches 
SM 89 B786 
B786 
Fax Option 
IP Fax Switch 03 [SP No. 1-111-004]  
No.  FUNCTION  COMMENTS 
0 Effective field limitation for G3 
standard function information 
0: OFF, 1: 4byte (DIS)  Limits the effective field for standard G3 
function information. 
1 
Switching between G3 standard 
and G3 non standard 
0: Enable switching 
1: G3 standard only  Enables/disables switching between G3 
standard and G3 non-standard. 
2  Not used. 
Do not change this setting. 
3 ECM frame size selection at 
transmitting 
0: 256byte, 1: 64byte  Selects the ECM frame size for sending. 
4 DIS detection times for echo 
prevention 
0: 1 time, 1: 2 times  Sets the number of times for DIS to detect 
echoes.  
5 
CTC transmission selection 
0: PPRx1 
1: PPRx4  When 0 is selected, the transmission 
condition is decided by error frame numbers.
When 1 is selected, the transmission 
condition is based on the ITU-T method. 
6 
Shift down setting at receiving 
negative code 
0: OFF, 1: ON  Selects whether to shift down when negative 
codes are received. 
7 
Not used   Do not change this setting. 
 
IP Fax Switch 04 [SP No. 1-111-005]  
No.  FUNCTION  COMMENTS 
0 
1 
2 
3 TCF error threshold 
Sets the TCF error threshold level. 
[00 to 0f] 
The default is 1111 (0fH). 
4-7 
Not used   Do not change these settings. 
 
IP Fax Switch 05 [SP No. 1-111-006]   
No.  FUNCTION  COMMENTS 
0-3 Modem bit rate setting for transmission 
Sets the modem bit rate for transmission. The default is 0110 (14.4K bps).  
						

							Bit Switches 
B786 90  SM 
Bit 3  Bit 2  Bit 1  Bit 0   
0 0  0 1 2400 bps 
0 0  1 1 4800 bps 
0 0  1 1 7200 bps 
0 1  0 0 9600 bps 
0 1  0 1 12.0 Kbps 
0 1  1 0 14.4 Kbps 
0 1  1 1 16.8 Kbps 
1 0  0 0 19.2 Kbps 
1 0  0 1 21.6 Kbps 
1 0  1 0 24.0 Kbps 
1 0  1 1 26.4 Kbps 
1 1  0 0 28.8 Kbps 
1 1  0 1 31.2 Kbps 
1 1  1 0 33.6 Kbps 
4-5 Modem setting for transmission 
Sets the modem for transmission. 
The default is 00 (V29). 
Bit 5: 0, Bit 4: 0 = V29 
Bit 5: 0, Bit 4: 1 = V17 
Bit 5: 1, Bit 4: 0 = V34* 
Bit 5: 1, Bit 4: 1 =
 Not used 
*V34 is not supported for IP-Fax communication. 
6-7  Not used   Do not change these settings. 
 
IP Fax Switch 06 [SP No. 1-111-007]  
No.  FUNCTION  COMMENTS 
Modem bit rate setting for reception 
Sets the modem bit rate for reception.  The default is 0110 (14.4K bps). 
Bit 3  Bit 2   Bit 1  Bit 0   
0 0  0 1 2400  bps 
0 0  1 0 4800 bps 
0 0  1 1 7200 bps 
0-3 
0 1  0 0 9600 bps  
						

							Bit Switches 
SM 91 B786 
B786 
Fax Option 
0 1  0 1 12.0  Kbps 
0 1  1 0 14.4 Kbps 
0 1  1 1 16.8 Kbps 
1 0  0 0 19.2 Kbps 
1 0  0 1 21.6 Kbps 
1 0  1 0 24.0 Kbps 
1 0  1 1 26.4 Kbps 
1 1  0 0 28.8 Kbps 
1 1  0 1 31.2 Kbps 
1 1  1 0 33.6 Kbps 
        
Modem setting for reception 
Sets the modem type for reception. The default is 0100 (V27ter, V29, V17). 
Bit 7  Bit 6   Bit 5  Bit 4   
0 0  0 1 V27ter 
0 0  1 0 V27ter,  V29 
0 0  1 1 V27ter, V29, V33 
(invalid) 
0 
1  0 0  V27ter, V29, V17 
0 1  0 1  V27ter, V29, V17, 
V34* 
4-7 
*V34 is not supported for IP-Fax communication. 
 IP Fax Switch 07 [SP No. 1-111-008]  
No.  FUNCTION  COMMENTS 
0 TSI information  
0: Not added, 1: Added  Adds or does not add TSI information to 
NSS(S). 
1 DCN transmission setting at T1 
timeout 
0: Not transmitted, 1: Transmitted  Transmits or does not transmit DCN at T1 
timeout. 
2 
Not used   Do not change this setting. 
3 Hang up setting at DIS reception 
disabled 
0: No hang up  Sets whether the machine disconnects after 
DIS reception.  
						

							Bit Switches 
B786 92  SM 
1: Hang up after transmitting DCN 
4 Number of times for training  
0: 1 time, 1: 2 times  Selects the number of times training is done 
at the same bit rate. 
5 
Space CSI transmission setting at 
no CSI registration 
0: Not transmitted, 1: Transmitted  When 0 is selected, frame data is enabled. 
When 1 is selected, the transmitted data is 
all spaces. 
6-7 
Not used   Do not change these settings. 
 
IP Fax Switch 08 [SP No. 1-111-009]  
No.  FUNCTION  COMMENTS 
0-1 T1 timer adjustment 
Adjusts the T1 timer. 
The default is 00 (35 seconds). 
Bit 1: 0, Bit 0: 0 = 35 sec 
Bit 1: 0, Bit 0: 1 = 40 sec 
Bit 1: 1, Bit 0: 0 = 50 sec 
Bit 1: 1, Bit 0: 1 =
 60 sec  - 
2-3 
T4 timer adjustment 
Adjust the T4 timer. 
The default is 00 (3 seconds). 
Bit 3: 0, Bit 2: 0 = 3 sec 
Bit 3: 0, Bit 2: 1 = 3.5 sec 
Bit 3: 1, Bit 2: 0 = 4 sec 
Bit 3: 1, Bit 2: 1 =
 5 sec  - 
4-5 
T0 timer adjustment  
Bit 5: 0, Bit 4: 0 = 75 sec 
Bit 5: 0, Bit 4: 1 = 120 sec 
Bit 5: 1, Bit 4: 0 = 180 sec 
Bit 5: 1, Bit 4: 1 =
 240 sec  Adjusts the fail safe timer. This timer sets the 
interval between setup data transmission 
and T.38 phase decision. 
If your destination 
return is late on the network or G3 fax return 
is late, adjust the longer interval timer. 
The default is 00 (75 seconds). 
6-7  Not used   Do not change these settings. 
  
						

							NCU Parameters 
SM 93 B786 
B786 
Fax Option 
4.4 NCU PARAMETERS 
The following tables give the RAM addresses  and the parameter calculation units that the 
machine uses for ringing signal  detection and automatic dialing. The factory settings for 
each country are also given. Most of these must be changed by RAM read/write (SP2-
102), but some can be changed using NCU Parameter programming (SP2-103, 104 and 
105); if SP2-103, 104 and 105 can be used, this  will be indicated in the Remarks column. 
The RAM is programmed in hex code unless  (BCD) is included in the Unit column. 
 
ƒ  The following addresses describe settings for the standard NCU. 
ƒ  Change the fourth digit from “5” to “6” (e.g. 680500 to 680600) for the settings for 
the first optional G3 interfac e unit and from “5” to “7” (e.g. 680700) for the settings 
for the second optional G3 interface unit. 
Address Function  
Country/Area code for NCU parameters 
Use the Hex value to program the count ry/area code directly into this 
address, or use the decimal value  to program it using SP2-103-001 
Country 
/Area   Decimal
 Hex  Country
 
/Area   Decimal
 Hex 
France    00  00  USA    17  11 
Germany    01  01  Asia    18  12 
UK   02  02  Hong Kong  20  14 
Italy    03  03  South Africa  21  15 
Austria    04  04  Australia    22  16 
Belgium    05  05  New Zealand 26  17 
Denmark    06  06  Singapore    24  18 
Finland    07  07  Malaysia    25  19 
Ireland    08  08  China    26  1A 
Norway    09  09  Taiwan    27  1B 
Sweden    10  0A  Korea  28  1C 
Switzerland    11  0B  Turkey  32  20 
Portugal    12  0C  Greece    33  21 
680500 
Holland    13  0D  Hungary  34  22  
						

							NCU Parameters 
B786 94  SM 
Address Function 
Spain    14  0E  Czech  35  23 
Israel    15  0F  Poland  36  24 
 
Address Function Unit Remarks 
680501  Line current detection time  
680502  Line current wait time  
680503  Line current drop detect time  20 ms 
Line current detection is 
disabled. 
Line current is not 
detected if 680501 
contains FF. 
680504 
PSTN dial tone frequency upper 
limit (high byte) 
680505 PSTN dial tone frequency upper 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680506 
PSTN dial tone frequency lower 
limit (high byte) 
680507 PSTN dial tone frequency lower 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680508  PSTN dial tone detection time 
680509  PSTN dial tone reset time (LOW) 
68050A  PSTN dial tone reset time (HIGH) 
68050B 
PSTN dial tone continuous tone 
time 
68050C PSTN dial tone permissible drop 
time  If 680508 contains 
FF(H), the machine 
pauses for the pause 
time (address 68050D / 
68050E). 
Italy: See Note 2. 
68050D  PSTN wait interval (LOW) 
68050E  PSTN wait interval (HIGH) 
20 ms 
- 
68050F  PSTN ring-back tone detection time 20 ms  Detection is disabled if 
this contains FF. 
680510 PSTN ring-back tone off detection 
time  20 ms  - 
680511 PSTN detection time for silent 
period after ring-back tone detected 
(LOW)  20 ms  - 
680512 
PSTN detection time for silent 
period after ring-back tone detected 
(HIGH)  20 ms  -  
						

							NCU Parameters 
SM 95 B786 
B786 
Fax Option 
Address Function  Unit Remarks 
680513  PSTN busy tone frequency upper 
limit (high byte) 
680514 PSTN busy tone frequency upper 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680515 
PSTN busy tone frequency lower 
limit (high byte) 
680516 PSTN busy tone frequency lower 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680517 
PABX dial tone frequency upper 
limit (high byte) 
680518 PABX dial tone frequency upper 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680519 
PABX dial tone frequency lower 
limit (high byte) 
68051A PABX dial tone frequency lower 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
68051B  PABX dial tone detection time 
68051C  PABX dial tone reset time (LOW) 
68051D  PABX dial tone reset time (HIGH) 
68051E 
PABX dial tone continuous tone 
time 
68051F PABX dial tone permissible drop 
time  If 68051B contains FF, 
the machine pauses for 
the pause time (680520 
/ 680521). 
680520  PABX wait interval (LOW) 
680521  PABX wait interval (HIGH) 20 ms 
- 
680522  PABX ringback tone detection time  20 ms 
680523 PABX ringback tone off detection 
time  20 ms If both addresses 
contain FF(H), tone 
detection is disabled. 
680524 
 PABX detection time for silent 
period after ringback tone detected 
(LOW)  20 ms 
680525  PABX detection time for silent 
period after ringback tone detected 
(HIGH)  20 ms If both addresses 
contain FF(H), tone 
detection is disabled. 
680526 
PABX busy tone frequency upper 
limit (high byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone  
						

							NCU Parameters 
B786 96  SM 
Address Function Unit Remarks 
680527  PABX busy tone frequency upper 
limit (low byte)  detection is disabled. 
680528 
PABX busy tone frequency lower 
limit (high byte) 
680529 PABX busy tone frequency lower 
limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
68052A  Busy tone ON time: range 1 
68052B  Busy tone OFF time: range 1 
68052C  Busy tone ON time: range 2 
68052D  Busy tone OFF time: range 2 
68052E  Busy tone ON time: range 3  20 ms 
68052F  Busy tone OFF time: range 3 
680530  Busy tone ON time: range 4 
680531  Busy tone OFF time: range 4 
680532 
Busy tone continuous tone 
detection time  20 ms - 
680533 
Busy tone signal state time tolerance 
for all ranges, and number of cycles 
required for detection (a setting of 4  cycles means that ON-OFF-ON or OFF-
ON-OFF must be detected twice). 
Tolerance (±) 
Bit 1: 0, Bit 0: 0 = 75% Bits 2  and 3 must always be kept at 0. 
Bit 1: 0, Bit 0: 0 = 50% Bits 2  and 3 must always be kept at 0. 
Bit 1: 0, Bit 0: 0 = 25% 
Bit 1: 0, Bit 0: 0 = 12.5%  
Bits 7, 6, 5, 4 - number of cy cles required for cadence detection 
680534 International dial tone frequency 
upper limit (high byte) 
680535 International dial tone frequency 
upper limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680536 
International dial tone frequency 
lower limit (high byte) 
680537 International dial tone frequency 
lower limit (low byte)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680538 
International dial tone detection 
time  
680539 International dial tone reset time 
(LOW)  20 ms 
If 680538 contains FF, 
the machine pauses for 
the pause time (68053D 
/ 68053E).  
						

							NCU Parameters 
SM 97 B786 
B786 
Fax Option 
Address Function  Unit Remarks 
68053A  International dial tone reset time 
(HIGH) 
68053B International dial
 tone continuous 
tone time 
68053C  International dial tone permissible 
drop time  Belgium: See Note 2. 
68053D 
International dial wait interval 
(LOW) 
68053E International dial wait interval 
(HIGH)  - 
68053F 
Country dial tone upper frequency 
limit (HIGH) 
680540 Country dial tone upper frequency 
limit (LOW)  If both addresses 
contain FF(H), tone 
detection is disabled. 
680541 
Country dial tone lower frequency 
limit (HIGH) 
680542 Country dial tone lower frequency 
limit (LOW)  Hz (BCD) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
680543  Country dial tone detection time 
680544  Country dial tone reset time (LOW) 
680545  Country dial tone reset time (HIGH) 20 ms 
If 680543 contains FF, 
the machine pauses for 
the pause time (680548 
/ 680549). 
680546 
Country dial t
one continuous tone 
time  - - 
680547 
Country dial tone permissible drop 
time 
680548  Country dial wait interval (LOW) 
680549  Country dial wait interval (HIGH)  20 ms  - 
68054A 
Time between opening or closing 
the DO relay and opening the OHDI 
relay  1 ms See Notes 3, 6 and 8. 
SP2-103-012 
(parameter 11). 
68054B  Break time for pulse dialing  1 ms  See Note 3.  
SP2-103-013 
(parameter 12). 
68054C  Make time for pulse dialing  1 ms See Note 3.  
SP2-103-014 
(parameter 13).  
						

							NCU Parameters 
B786 98  SM 
Address Function Unit Remarks 
68054D  Time between final OHDI relay 
closure and DO relay opening or 
closing  1 ms See Notes 3, 6 and 8.  
SP2-103-015 
(parameter 14). 
This parameter is only 
valid in Europe. 
68054E 
Minimum pause between dialed 
digits (pulse dial mode)  See Note 3 and 8. SP2-
103-016 (parameter 15).
68054F 
Time waited when a pause is 
entered at the operation panel  20 ms 
SP2-103-017 
(parameter 16). See 
Note 3. 
680550  DTMF tone on time  SP2-103-018 
(parameter 17). 
680551  DTMF tone off time 1 ms 
SP2-103-019 
(parameter 18). 
680552 Tone attenuation level of DTMF 
signals while dialing  -N x 0.5  –
3.5 dBm SP2-103-020 
(parameter 19).  
See Note 5. 
680553 Tone attenuation value difference 
between high frequency tone and 
low frequency tone in DTMF 
signals  -dBm x 0.5 SP2-103-021 
(parameter 20). 
The setting must be less 
than –5dBm, and should 
not exceed the setting at 
680552h above. 
See Note 5. 
680554 
PSTN: DTMF tone attenuation level 
after dialling  -N x 0.5  –
3.5 dBm SP2-103-022 
(parameter 21). See 
Note 5. 
680555 
ISDN: DTMF tone attenuation level 
after dialling  -dBm x 0.5  See Note 5 
680556 Not used 
- Do not change the 
settings. 
680557 Time between 68054Dh (NCU 
parameter 14) and 68054Eh (NCU 
parameter 15)  1 ms This parameter takes 
effect when the country 
code is set to France. 
680558 Not used 
- Do not change the 
setting. 
680559 Grounding time (ground start 
mode)  20 ms 
The Gs relay is closed 
for this interval. 
68055A  Break time (flash start mode)  1 ms  The OHDI relay is open 
for this interval.