Ricoh B230 Service Manual

NCU Parameters 
SM 101 B786 
B786 
Fax Option 
Address Function Unit Remarks 
frequency upper limit (low byte) 
6805A8 Acceptable CNG detection 
frequency lower limit (high byte) 
6805A9 Acceptable CNG detection 
frequency lower limit (low byte) BCD (Hz) If both addresses 
contain FF(H), tone 
detection is disabled. 
6805AA Not used - Do not change the 
setting. 
6805AB  CNG on time  20 ms  Factory setting: 500 ms 
6805AC  CNG off time  20 ms  Factory setting: 3000 ms
6805AD Number of CNG cycles required...

NCU Parameters 
B786 102  SM 
Address Function Unit Remarks 
6805B9 PABX: 2100 Hz tone transmission  
level - N 6805B7 - 0.5N 6805B9 (dB) 
6805BD Modem turn-on level (incoming 
signal detection level)  -37-0.5N 
(dBm)   
6805BE 
to 
6805C6 Not used - Do not change the 
settings. 
6805C7 Bits 0 to 3 – Not used 
Bit 4 = V.34 protocol dump   0: Simple, 1: Detailed (default) 
Bits 5 to 7 – Not used. 
6805C8 
to 
6805D9 Not used - Do not change the 
settings. 
6805DA  T.30 T1 timer  1 s   
6805E0 
bit 3...

NCU Parameters 
SM 103 B786 
B786 
Fax Option 
Address Function Unit Remarks 
(Composite) 
0 Auto Bit 0 
1 Fixed 
0 Use RDTP 
Bit 0 sets the ring 
detection method, 
Bit 1 sets the ring 
detection method 
when fixed.  Bit 1 
1 Use RDTN 
Here is a summary of the voltages for the 
detection of off-hook for DP detection. 
Bit 7  Bit 6  Bit 5  Bit 4  - 
0 0 0 0 Not used 
0 0 0 1 2.75 V 
0 0 1 0 5.5 V 
1 0 0 0 22 V 
6805E5 
1 1 1 1 41.25 V If any setting is 
changed, select a 
setting that is higher 
than the...

NCU Parameters 
B786 104  SM 
ƒ  – 0.5 x N680552/680554–3.5 dBm  
ƒ  – 0.5 x N
680555 dBm 
Low frequency tone:  
ƒ  – 0.5 x (N
680552/680554 + N680553) –3.5 dBm  
ƒ  – 0.5 x (N
680555 + N680553) dBm 
 
ƒ N
680552, for example, means the value stored in address 680552(H) 
6.  68054A: Europe - Between Ds opening and Di opening, France - Between Ds closing 
and Di opening 
68054D: Europe - Between Ds closing and Di closing, France - Between Ds opening 
and Di closing 
7.  Tone signals which frequency is...

Dedicated Transmission Parameters 
SM 105 B786 
B786 
Fax Option 
4.5 DEDICATED TRANSMISSION PARAMETERS 
There are two sets of transmission parameters: Fax and E-mail 
Each Quick Dial Key and Speed Dial Code has eight bytes of programmable parameters 
allocated to it. If transmissions to a particular machine often experience problems, store 
that terminal’s fax number as a Quick Dial or Speed Dial, and adjust the parameters 
allocated to that number. 
The programming procedure will be explained first....

Dedicated Transmission Parameters 
B786 106  SM 
Do not program a value between 79h and FEh. 
 
Switch 01 
No FUNCTION COMMENTS 
Tx level 
Bit4 Bit3 Bit2 Bit1 Bit0  
0 0 0 0 0  0 
0 0 0 0 1  –1 
0 0 0 1 0  –2 
0 0 0 1 1  –3 
0 0 1 0 0  –4 
      
0 1 1 1 1  –15 
0-4 
1 1 1 1 1 Disabled If communication with a particular 
remote terminal often contains 
errors, the signal level may be 
inappropriate. Adjust the Tx level for 
communications with that terminal 
until the results are better. 
If the setting...

Dedicated Transmission Parameters 
SM 107 B786 
B786 
Fax Option 
0 0 0 0 Not used 
0 0 0 1  2400 
0 0 1 0  4800 
0 0 1 1  7200 
0 1 0 0  9600 
0 1 0 1  12000 
0 1 1 0  14400 
0 1 1 1  16800 
1 0 0 0  19200 
1 0 0 1  21600 
1 0 1 0  24000 
1 0 1 1  26400 
1 1 0 0  28800 
1 1 0 1  31200 
1 1 1 0  33600 
1 1 1 1 Disabled 
Other settings: Not used rate may be too high. Reduce the initial Tx 
modem rate using these bits. 
For the settings 14.4 or kbps slower, Switch 
04 bit 4 must be changed to 0. 
 
ƒ  Do...

Dedicated Transmission Parameters 
B786 108  SM 
4 V.8 protocol 
0: Off 
1: Disabled If transmissions to a specific destination always 
end at a lower modem rate (14,400 bps or lower), 
disable V.8 protocol so as not to use V.34 
protocol.  
0: V.34 communication will not be possible. 
If the setting is “Disabled”, the bit switch setting is 
used. 
5 Compression modes available 
in transmit mode 
0: MH only 
1: Disabled This bit determines the capabilities that are 
informed to the other terminal during...

Dedicated Transmission Parameters 
SM 109 B786 
B786 
Fax Option 
1: On 
2 MMR Compression mode 
for e-mail attachments 
0: Off 
1: On Switches MMR compression on and off for files 
attached to e-mails for sending. 
3-6 Not used  Do not change these settings. 
7 Designates the bits to 
reference for 
compression method of 
e-mail attachments 
0: Registered (Bit 0 to 6) 
1: No registration. The 0 selection (default) references the settings 
for Bits 00, 01, 02 above. The 1 selection ignores 
the...

Dedicated Transmission Parameters 
B786 110  SM 
attachment: 200 x 200 
0: Off 
1: On 200 x 200. 
2 Line resolution of e-mail 
attachment: 200 x 400 
0: Off 
1: On Sets the line resolution of the e-mail attachment as 
200 x 400. 
3  Not used  Do not change these settings. 
4 Line resolution of e-mail 
attachment: 400 x 400 
0: Off 
1: On Sets the line resolution of the e-mail attachment as 
400 x 400. 
5-6 Not used  Do not change these settings. 
7 Designates the bits to 
reference for original size 
of...