Ricoh M0A0, Service Manual

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4.Service Tables
70
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
Comments
0
1 Monitor speaker during
communication (TX and RX) (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.
(1, 0): Used for testing. The monitor speaker is on all through the
communication. Make sure that you reset these bits after testing.
Bit 1 Bit 0 Setting
0 0 Disabled
0 1 Up to Phase B
1 0 All the time
1 1 Not used
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 Dedicated G3 line mode selection
0: Off 1: On (Dedicated) Set this bit to 1 when you wish to dedicate a line for G3.
7 Not used Do not change this setting.
G3 Switch 01 (SP No. 1-105-002)
No Function
Comments
0-
3 Not used Do not change the settings.
4 DIS frame length
0: 10 bytes 1: 4
bytes 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).
5 Not used Do not change the setting.
6 Forbid
CED/ANsam Do not change this setting (Default: 0: Off), unless communication problem is caused by
a CED or ANSam transmission.