Ricoh Aficio 1013 Service Manual page 303

G3 Switch 08
No. FUNCTION
0, 1 PABX cable equalizer
(tx mode: Internal)
Bit 1 Bit 0
0 0
0 1
1 0
1 1
2, 3 PABX cable equalizer
(rx mode: Internal)
Bit 3 Bit 2
0 0
0 1
1 0
1 1
4 PABX cable equalizer
(V.27ter, V.29, V.33/V.17, V.8 rx
mode: External)
0: Disabled 1: Enabled
5–7 Not used
G3 Switch 09 - Not used (do not change any of these settings)
G3 Switch 0A
No. FUNCTION
0, 1 Maximum allowable carrier
drop during image data
reception
Bit 1 Bit 0
0 0
0 1
1 0
1 1
2 Reception carrier drop
operation.
0: Continue reception
1: Disconnect the line
3 Not used
SM
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between
Setting the modem and the telephone exchange.
None Use the dedicated transmission parameters for
Low specific receivers.
Medium
High Also, try using the cable equalizer if one or more of
the following symptoms occurs.
•
Communication error
•
Modem rate fallback occurs frequently.
Note: This setting is not effective in V.34
communications.
Use a higher setting if there is signal loss at higher
frequencies because of the length of wire between
Setting the modem and the telephone exchange.
None
Low Also, try using the cable equalizer if one or more of
Medium the following symptoms occurs.
•
High
Communication error with error codes such as
0-20, 0-23, etc.
•
Modem rate fallback occurs frequently.
Note: This setting is not effective in V.34
communications.
Set this bit to 0 when line quality is good.
(e.g. for a digital PABX)
Do not change these settings.
These bits set the acceptable modem carrier drop
time.
Try using a longer setting if error code 0-22 is
Value (ms) frequent.
200
400
800
Not used
This bit decides what the machine does when there
is a carrier drop in the image data.
Do not change the setting.
5-31
BIT SWITCHES
COMMENTS
COMMENTS
B465