Ricoh Mp C3000 Service Manual

Bit Switches 
SM 69 B786 
B786 
Fax Option 1  Acceptable total error line ratio
0: 5% 1: 10%  If the error line ratio for a page exceeds the 
acceptable ratio, RTN will be sent to the other 
end. 
2 Treatment of pages received 
with errors during G3 
reception 
0: Deleted from memory 
without printing 
1: Printed  0: Pages received with errors are not printed. 
3 
Hang-up decision when a 
negative code (RTN or PIN) is 
received during G3 immediate 
transmission 
0: No hang-up, 1: Hang-up  0: The next...

Bit Switches 
B786 70  SM 
No  FUNCTION  COMMENTS 
0 Point of resumption of 
memory transmission upon 
redialing 
0: From the error page 
1: From page 1  0: The transmission begins from the page where 
transmission failed the previous time. 
1: Transmission begins from
 the first page, using 
normal memory transmission. 
1-7  Not used   Do not change the settings. 
 
Communication Switch 0B - Not used (do not change the settings) 
Communication Switch 0C - Not used (do not change the settings)...

Bit Switches 
SM 71 B786 
B786 
Fax Option 
destination 
 
Communication Switch 11 – Not used  (do not change the settings.) 
 
Communication Switch 12 [SP No. 1-104-019]  
No  FUNCTION  COMMENTS 
0-7 Memory transmission: Interval 
between dialing attempts to 
the same destination  01 – FF (Hex) minutes 
 
Communication Switch 13 – Not used  (do not change the settings.) 
 
Communication Switch 14 [SP No. 1-104-021]  
No  FUNCTION  COMMENTS 
0 Inch-to-mm conversion during 
transmission 
0: Disabled 1:...

Bit Switches 
B786 72  SM 
No  FUNCTION  COMMENTS 
0 Not used   Do not change the factory settings. 
1 Optional G3 unit (G3-2) 
0: Off 
1: On  Change this bit to 1 when installing the first 
optional G3 unit (G3-2). 
2 
Not used   Do not change the factory settings. 
3 Optional G3 unit (G3-3)  
0: Off 
1: On  Change this bit to 1 when installing the second 
optional G3 unit (G3-3). 
4-7 
Not used   Do not change the factory settings. 
 
Communication Switch 17 [SP No. 1-104-024]  
No  FUNCTION  COMMENTS...

Bit Switches 
SM 73 B786 
B786 
Fax Option 
 
Communication Switch 19 - Not used  (do not change the settings) 
Communication Switch 1A - Not used  (do not change the settings) 
 
Communication Switch 1B [SP No. 1-104-028] 
No   FUNCTION  COMMENTS 
0-7 Extension access code (0 to 
7) to turn V.8 protocol On/Off  
0: On 
1: Off 
   If the PABX does not support V.8/V.34 protocol 
procedure, set this bit to “1” to disable V.8. 
Example: If “0” is the PSTN access code, set bit 0 
to 1. When the machine...

Bit Switches 
B786 74  SM 
2 Monitor speaker during 
memory transmission 
0: Disabled 1: Enabled  1: The monitor speaker 
is enabled during memory 
transmission. 
3-5  Not used   Do not change the settings. 
6 G3 mode selection for direct 
line 
0: Off 
1:On   1: G3 communication through the direct line is 
enabled.  
7 
Not used   Do not change the settings. 
 
G3 Switch 01 [SP No. 1-105-002]  
No  FUNCTION  COMMENTS 
0-1 Not used   Do not change the settings. 
2-3 Not used   Do not change the settings....

Bit Switches 
SM 75 B786 
B786 
Fax Option 0  DIS detection number  
(Echo countermeasure) 
0: 1  
1: 2  0: The machine will hang up if it receives the 
same DIS frame twice. 
1: Before sending DCS, the machine will wait for 
the second DIS which is caused by echo on the 
line. 
1 
Not Used   Do not change the settings. 
2 V.8 protocol 
0: Disabled 
1: Enabled  0: V.8/V.34 communications will not be possible. 
Note: 
Do not set to 0 unless the line condition is always 
bad enough to slow down the data...

Bit Switches 
B786 76  SM 
sender that training has succeeded. 
4-7 Not used   Do not change the settings. 
 
G3 Switch 05 [SP No. 1-105-006]  
No  FUNCTION  COMMENTS 
Initial Tx modem rate 
Bit 3  Bit 2  Bit 1  Bit 0  bps 
0 0 0 1 2.4k 
0 0 1 0 4.8k 
0 0 1 1 7.2k 
0 1 0 0 9.6k 
0 1 0 1 12.0k 
0 1 1 0 14.4k 
0 1 1 1 16.8k 
1 0 0 0 19.2k 
1 0 0 1 21.6k 
1 0 1 0 24.0k 
1 0 1 1 26.4k 
1 1 0 0 28.8k 
1 1 0 1 31.2k 
1 1 1 0 33.6k 
0-3 
Other settings -  Not used These bits set the initial starting modem rate...

Bit Switches 
SM 77 B786 
B786 
Fax Option 
 
G3 Switch 06 [SP No. 1-105-007]  
No  FUNCTION  COMMENTS 
Initial Rx modem rate 
Bit 3  Bit 2  Bit 1  Bit 0  bps 
0 0 0 1  2.4k 
0 0 1 0  4.8k 
0 0 1 1  7.2k 
0 1 0 0  9.6k 
0 1 0 1  12.0k 
0 1 1 0  14.4k 
0 1 1 1  16.8k 
1 0 0 0  19.2k 
1 0 0 1  21.6k 
1 0 1 0  24.0k 
1 0 1 1  26.4k 
1 1 0 0  28.8k 
1 1 0 1  31.2k 
1 1 1 0  33.6k 
0-3 
Other settings -  Not used  ƒ  These bits set the initial starting modem 
rate for reception. 
ƒ  Use a lower setting if...

Bit Switches 
B786 78  SM 
Other settings - Not used 
 
G3 Switch 07 [SP No. 1-105-008]  
No  FUNCTION   COMMENTS 
0-1 PSTN cable equalizer 
(tx mode: Internal) 
Bit 1: 0, Bit 0: 0 = None 
Bit 1: 0, Bit 0: 1 = Low 
Bit 1: 1, Bit 0: 0 = Medium 
Bit 1: 1, Bit 0: 1 =
 High  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. 
Use the dedicated transmission parameters for 
specific receivers. 
Also, try using the...