Ricoh MP C307 Field Service Manual page 1166

4.Service Tables
Bit Switches – 4
• Do not adjust a bit switch or use a setting that is described as "Not used", as this may cause the machine
to malfunction or to operate in a manner that is not accepted by local regulations. Such bits are for use
only in other areas, such as Japan.
Default settings for bit switches are not listed in this manual. Refer to the System Parameter List printed by the
machine.
G3 Switches
G3 Switch 00 (SP No. 1-105-001)
No Function
0 Monitor speaker during
1 communication (tx and rx)
Bit 1 Bit 0
0 0
0 1
1 0
1 1
2 Monitor speaker during memory
transmission
0: Disabled 1: Enabled
3- Not used
5
6 Dedicated G3 line mode selection
0: Off 1: On (Dedicated)
7 Not used
G3 Switch 01 (SP No. 1-105-002)
No Function
0- Not used
3
4 DIS frame length
0: 10 bytes 1: 4
bytes
5 Not used
6 Forbid
84
Comments
(0, 0): The monitor speaker is disabled all through the
communication.
(0, 1): The monitor speaker is on up to phase B in the T.30 protocol.
Setting
(1, 0): Used for testing. The monitor speaker is on all through the
Disabled
communication. Make sure that you reset these bits after testing.
Up to Phase B
All the time
Not used
1: The monitor speaker is enabled during memory transmission.
Do not change the settings.
Set this bit to 1 when you wish to dedicate a line for G3.
Do not change this setting.
Comments
Do not change the settings.
1: The bytes in the DIS frame after the 4th byte will not be transmitted (set to 1 if
there are communication problems with PC-based faxes which cannot receive the
extended DIS frames).
Do not change the setting.
Do not change this setting (Default: 0: Off), unless communication problem is