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 for 
detection - The data is coded in the 
same way as address 
680533. 
6805AE Not used - Do not change the 
settings. 
6805AF Acceptable AI short protocol tone 
(800Hz) detection frequency upper 
limit (high byte) 
6805B0 Acceptable AI short protocol tone 
(800Hz) detection frequency upper 
limit (low byte) Hz (BCD) If both addresses 
contain FF(H), tone 
detection is disabled. 
6805B1 Acceptable AI short protocol tone 
(800Hz) detection frequency lower 
limit (high byte) 
6805B2 Acceptable AI short protocol tone 
(800Hz) detection frequency lower 
limit (low byte) Hz(BCD) If both addresses 
contain FF(H), tone 
detection is disabled. 
6805B3 Detection time for 800 Hz AI short 
protocol tone 20 ms  Factory setting: 360 ms 
6805B4  PSTN: Tx level from the modem  -N – 3 dBm SP2-103-002 
(parameter 01). 
6805B5 PSTN: 1100 Hz tone transmission 
level - N 6805B4 - 0.5N 6805B5 –3.5 (dB)  
See Note 7. 
6805B6 PSTN: 2100 Hz tone transmission 
level - N6805B4 - 0.5N 6805B6 –3 (dB) 
See Note 7. 
6805B7  PABX: Tx level from the modem  - dBm   
6805B8 PABX: 1100 Hz tone transmission 
level - N 6805B7 - 0.5N 6805B8 (dB)  
						

							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 Maximum wait time for post 
message 0: 12 s 
1: 30 s 1: Maximum wait time 
for post message 
(EOP/EOM/MPS) can 
be changed to 30 s. 
Change this bit to “1” if 
communication errors 
occur frequently during 
V.17 reception. 
Voltage setting to detect off-hook 
for voltage/DP detection for an 
externally connected line. 0: Auto   
1: Fixed V 
Here is a summary of the fixed voltage settings (1: 
Fixed) for an externally connected line. 
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 
6805E3 
1 1 1 1 41.25 V Do not change these 
settings 
0 RT=0 (Low) Bit 1 
1 RT=1 (High) 
0 RZ=0 (High) 
6805E4 Bit 1 sets the level of 
the call signal, Bit 3 
sets the call signal 
impedance 
Bit 3 
1 RZ=1 0：，1：  
						

							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 default setting. 
NOTES 
1.  If a setting is not required, store FF in the address. 
2.  Italy and Belgium only 
RAM address 68055E: the lower four bits have the following meaning. 
Bit 2 - 1: International dial tone cadence detection enabled (Belgium) 
Bit 1 - Not used 
Bit 0 - 1: PSTN dial tone cadence detection enabled (Italy) 
If bit 0 or bit 2 is set to 1, the functions of the following RAM addresses are changed. 
680508 (if bit 0 = 1) or 680538 (if bit 2 = 1): tolerance for on or off state  
duration (%), and number of cycles required for detection, coded as in address 
680533. 
68050B (if bit 0 = 1) or 68053B (if bit 2 = 1): on time, hex code (unit = 20 ms) 
68050C (if bit 0 = 1) or 68053C (if bit 2 = 1): off time, hex code (unit = 20 ms) 
3.  Pulse dial parameters (addresses 68054A to 68054F) are the values for 10 pps. If 20 
pps is used, the machine automatically compensates. 
4.  The first ring may not be detected until 1 to 2.5 wavelengths after the time specified 
by this parameter. 
5.  The calculated level must be between 0 and 10. 
The attenuation levels calculated from RAM data are: 
High frequency tone:   
						

							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 lower than 1500Hz (e.g., 800Hz tone for AI short 
protocol) refer to the setting at 6805B5h. Tones which frequency is higher than 
1500Hz refer to the setting at 6805B6h.  
8.  68054A, 68054D, 68054E: The actual inter-digit pause (pulse dial mode) is the sum of 
the period specified by the RAM addresses 68054A, 68054D, and  68054E.  
						

							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. Then, the eight bytes will be described. 
4.5.1 PROGRAMMING PROCEDURE 
1.  Set the bit 0 of System Bit Switch 00 to 1. 
2.  Enter Address Book Management mode ([User Tools]> System Settings> Key 
Operator> Address  Book  Management). 
3.  Select the address book that you want to program. 
4.  For the fax parameter, select Fax Dest., for the E-mail parameter, select E-mail, 
then press “Start”. Make sure that the LED of the Start button lights green. 
5.  The settings for the switch 00 are now displayed. Press the bit number that you wish 
to change. 
6.  To scroll through the parameter switches, either: 
7.  Select the next switch: press “Next” or Select the previous switch: “Prev.” until the 
correct switch is displayed. Then go back to step 6. 
8.  After the setting is changed, press “OK”. 
9.  After finishing, reset bit 0 of System Bit Switch 00 to 0. 
4.5.2 PARAMETERS 
Fax Parameters 
The initial settings of the following fax parameters are all FF(H) - all the parameters are 
disabled. 
 
Switch 00 
FUNCTION AND COMMENTS 
ITU-T T1 time (for PSTN G3 mode) 
If the connection time to a particular terminal is longer than the NCU parameter setting, 
adjust this byte. The T1 time is the value stored in this byte (in hex code), multiplied by 1 
second. 
Range: 
0 to 120 s (00h to 78h) 
FFh - The local NCU parameter factory setting is used.  
						

							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 is “Disabled”, the NCU 
parameter 01 setting is used. 
 
ƒ  Do not use settings other 
than listed on the left. 
5-7 Cable equalizer 
Bit 7: 0, Bit 6: 0, Bit 5: 0 = None 
Bit 7: 0, Bit 6: 0, Bit 5: 1 = Low 
Bit 7: 0, Bit 6: 1, Bit 5: 0 = Medium 
Bit 7: 0, Bit 6: 1, Bit 5: 1 = High 
Bit 7: 1, Bit 6: 1, Bit 5: 1 = Disabled Use a higher setting if there is signal 
loss at higher frequencies because 
of the length of wire between the 
modem and the telephone exchange 
when calling the number stored in 
this Quick/Speed Dial. 
Also, try using the cable equalizer if 
one or more of the following 
symptoms occurs. 
Communication error with error 
codes such as 0-20, 0-23, etc. 
Modem rate fallback occurs 
frequently. 
 
ƒ  Do not use settings other 
than listed on the left. 
If the setting is “Disabled”, the 
bit switch setting is used. 
 
 
Switch 02 
No FUNCTION COMMENTS 
Initial Tx modem rate 0-3 
Bit3 Bit2 Bit1 Bit0  bps If training with a particular remote terminal 
always takes too long, the initial modem  
						

							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 not use settings other than 
listed on the left. If the setting is 
“Disabled”, the bit switch setting is 
used. 
4-7 Not used  Do not change the settings. 
 
Switch 03 
No FUNCTION COMMENTS 
0-1 Inch-mm conversion before tx 
Bit 1: 0, Bit 0: 0  
= Inch-mm conversion 
available 
Bit 1: 0, Bit 0: 1 = Inch only 
Bit 1: 1, Bit 0: 0 = Not used 
Bit 1: 1, Bit 0: 1 = Disabled The machine uses inch-based resolutions for 
scanning. If “inch only” is selected, the printed 
copy may be slightly distorted at the other end if 
that machine uses mm-based resolutions. 
If the setting is “Disabled”, the bit switch setting is 
used. 
2-3 DIS/NSF detection method  
Bit 3: 0, Bit 2: 0  
= First DIS or NSF 
Bit 3: 0, Bit 2: 1  
= Second DIS or NSF 
Bit 3: 1, Bit 2: 0 = Not used 
Bit 3: 1, Bit 2: 1 = Disabled (0, 1): Use this setting if echoes on the line are 
interfering with the set-up protocol at the start of 
transmission. The machine will then wait for the 
second DIS or NSF before sending DCS or NSS. 
If the setting is “Disabled”, the bit switch setting is 
used.  
						

							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 
transmission. 
If the setting is “Disabled”, the bit switch setting is 
used. 
6-7 ECM during transmission 
Bit 7: 0, Bit 6: 0 = Off  
Bit 7: 0, Bit 6: 1 = On 
Bit 7: 1, Bit 6: 0 = Not used 
Bit 7: 1, Bit 6: 1 = Disabled For example, if ECM is switched on but is not 
wanted when sending to a particular terminal, use 
the (0, 0) setting.  
ƒ  V.8/V.34 protocol and JBIG compression 
are automatically disabled if ECM is 
disabled. 
ƒ  If the setting is “Disabled”, the bit switch 
setting is used. 
 
Switch 04 - Not used (do not change the settings) 
Switch 05 - Not used (do not change the settings) 
Switch 06 - Not used (do not change the settings) 
Switch 07 - Not used (do not change the settings) 
Switch 08 - Not used (do not change the settings) 
Switch 09 - Not used (do not change the settings) 
 
 
E-mail Parameters 
The initial settings of the following e-mail parameters are all 0 (all parameters disabled). 
Switch 00  
No FUNCTION COMMENTS 
0 MH Compression mode 
for e-mail attachments 
0: Off 
1: On Switches MH compression on and off for files 
attached to e-mails for sending. 
1 MR Compression mode 
for e-mail attachments 
0: Off Switches MR compression on and off for files 
attached to e-mails for sending.  
						

							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 selections of Bits 00, 01, 02. 
 
Switch 01  
No FUNCTION COMMENTS 
0 Original width of e-mail 
attachment: A4 
0: Off 
1: On Sets the original width of the e-mail attachment as 
A4. 
1 Original width of e-mail 
attachment: B4 
0: Off 
1: On Sets the original width of the e-mail attachment as 
B4. 
2 Original width of e-mail 
attachment: A3 
0: Off 
1: On Sets the original width of the e-mail attachment as 
A3. 
3-6 Not used  Do not change these settings. 
7 Designates the bits to 
reference for original size 
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 selections of Bits 00, 01, 02. 
 
Switch 02  
No FUNCTION COMMENTS 
0 Line resolution of e-mail 
attachment: 200 x 100 
0: Off 
1: On Sets the line resolution of the e-mail attachment as 
200 x100. 
1  Line resolution of e-mail  Sets the line resolution of the e-mail attachment as  
						

							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 e-mail attachments 
0: Registered (Bit 0 to 6) 
1: No registration. The 0 selection (default) references the settings 
for Bits 00, 01, 02, 04 above. The 1 selection 
ignores the selections of Bits 00, 01, 02, 04. 
 
Switch 03 - Not used (do not change the settings) 
 
Switch 04  
No FUNCTION COMMENTS 
0 Full mode address 
selection 
0: Full mode address 
1: No full mode (simple 
mode) If the other ends have the addresses, which have 
the full mode function flag (0), this machine 
determines them as full mode standard machines. 
ƒ  This machine attaches the demand of 
reception confirmation to a message when 
transmitting. 
ƒ  This machine updates the reception capability 
to the address book when receiving. 
1-7 Not used  Do not change these settings. 
 
Switch 05  
No FUNCTION COMMENTS 
0 Directr transmission 
selection to SMTP server 
0: ON 
1: OFF Allows or does not allow the direct transmission to 
SMTP server.  
1-7  Not used  Do not change these settings.