Ricoh B230 Service Manual

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...

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...

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...

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...

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)...

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...

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...

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...

NCU Parameters 
SM 99 B786 
B786 
Fax Option 
Address Function Unit Remarks 
68055B International dial access code 
(High) 
68055C International dial access code 
(Low) BCD For a code of 100: 
68055B - F1   
68055C - 00   
68055D  PSTN access pause time  20 ms This time is waited for 
each pause input after 
the PSTN access code. 
If this address contains 
FF[H], the pause time 
stored in address 
68054F is used. 
Do not set a number 
more than 7 in the UK.  
68055E Progress tone detection level, and...

NCU Parameters 
B786 100  SM 
Address Function Unit Remarks 
(parameter 07). 
680578 Minimum required length of the 
second and subsequent rings 20 ms SP2-103-009 
(parameter 08). 
680579 Ringing signal detection reset time 
(LOW) SP2-103-010 
(parameter 09). 
68057A Ringing signal detection reset time 
(HIGH) 20 ms 
SP2-103-011 (parameter 
10). 
68057B 
to 
680580 Not used - Do not change the 
settings. 
680581 Interval between dialing the last 
digit and switching the Oh relay 
over to the external...