Ricoh D023, Service Manual, Page: 1436 / 1522

Bit Switches
SM 95 D393
Fax Op
tion
T
ype C50
00
(D
39
3)
4.3.4 COMMUNICATION SWITCHES
Communication Switch 00 [SP No. 1-104-001]
No FUNCTION COMMENTS
0-1
Compression modes available
in receive mode
Bit 1: 0 Bit 0: 0 = MH only
Bit 1: 0 Bit 0: 1 = MH/MR
Bit 1: 1 Bit 0: 0 = MH/MR/MMR
Bit 1: 1 Bit 0: 1
= MH/MR/MMR/JBIG
These bits determine the compression capabilities
to be declared in phase B (handshaking) of the
T.30 protocol.
2-3
Compression modes available
in transmit mode
Bit 3: 0 Bit 2: 0 = MH only
Bit 3: 0 Bit 2: 1 = MH/MR
Bit 3: 1 Bit 2: 0 = MH/MR/MMR
Bit 3: 1 Bit 2: 1
= MH/MR/MMR/JBIG
These bits determine the compression capabilities
to be used in the transmission and to be declared
in phase B (handshaking) of the T.30 protocol.
4
Not used
Do not change the settings.
5
JBIG compression method:
Reception
0: Only basic supported
1: Basic and optional both
supported
Change the setting when communication
problems occur using JBIG compression.
6
JBIG compression method:
Transmission
0: Basic mode priority
1: Optional mode priority
Change the setting when communication
problems occur using JBIG compression.
7 Not used Do not change the settings.