Ricoh Mp C3000 Service Manual

							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 
cadence detecti
on enable flags  Bit 7: 0, Bit 6: 0, Bit 5: 0 = -25.0 dBm 
Bit 7: 0, Bit 6: 0, Bit 5: 1 = -35.0 dBm 
Bit 7: 0, Bit 6: 1, Bit 5: 0 = -30.0 dBm 
Bit 7: 1, Bit 6: 0, Bit 5: 0 = -40.0 dBm 
Bit 7: 1, Bit 6: 1, Bit 5: 0 = -49.0 dBm 
Bits 2, 0 - See Note 2. 
68055F 
 To  
680564 
Not used
 -  Do not change the 
settings. 
680565  Long distance call prefix (HIGH)  BCD 
680566  Long distance call prefix (LOW)  BCD  For a code of 0: 
 680565 – FF 
 680566 - FF 
680567 
to 
680571 
Not used
 -  Do not change the 
settings. 
680572 
Acceptable ringing signal 
frequency: range 1, upper limit  SP2-103-003 
(parameter 02). 
680573 
Acceptable ringing signal 
frequency: range 1, lower limit  SP2-103-004 
(parameter 03). 
680574 
Acceptable ringing signal 
frequency: range 2, upper limit  SP2-103-005 
(parameter 04). 
680575 
Acceptable ringing signal 
frequency: range 2, lower limit  1000/ N 
(Hz). 
SP2-103-006 
(parameter 05). 
680576 Number of rings until a call is 
detected  1 SP2-103-007 
(parameter 06). 
The setting must not be 
zero. 
680577 
Minimum required length of the first 
ring  20 ms 
See Note 4. 
SP2-103-008  
						

							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 telephone 
when dialing from the operation 
panel in handset mode.  20 ms  Factory setting: 500 ms 
680582 Bits 0 and 1 - Handset off-hook detection time 
Bit 1:0, Bit 0: 0 = 200 ms 
Bit 1:0, Bit 0: 1 = 800 ms 
Other Not used 
Bits 2 and 3 - Handset on-hook detection time 
Bit 3: 0, Bit 2: 0 = 200 ms 
Bit 3: 0, Bit 2: 1 = 800 ms 
Other Not used 
Bits 4 to 7 - 
Not used  - 
680583 
To  
6805A0 
Not used
 -  Do not change the 
settings. 
6805A1 
Acceptable CED detection 
frequency upper limit (high byte) 
6805A2 Acceptable CED detection 
frequency upper limit (low byte)  BCD (Hz) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
6805A3 
Acceptable CED detection 
frequency lower limit (high byte) 
6805A4 Acceptable CED detection 
frequency lower limit (low byte)  BCD (Hz) 
If both addresses 
contain FF(H), tone 
detection is disabled. 
6805A5  CED detection time 
20 ms ± 20 
ms Factory setting: 200 ms  
6805A6 
Acceptable CNG detection 
frequency upper limit (high byte) 
6805A7  Acceptable CNG detection  BCD (Hz) 
If both addresses 
contain FF(H), tone 
detection is disabled.  
						

							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 functi ons 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 calc ulated 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 RA M 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 partic ular 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 w ill 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 t he LED of the Start button lights green. 
5.  The settings for the switch 00 are now disp layed. Press the bit number that you wish 
to change. 
6.  To scroll through the parameter switches, either: 
7.  Select the next switch: pre ss “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 parame ters 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 termi nal is longer than the NCU parameter setting, 
adjust this byte. The T1 time is the value st ored 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 spec
ific 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 pa
rticular 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 para meters 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.