Ricoh Aficio MP C2030, Service Manual

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Bit Switches
D432/D433 94 SM
Bit 3: 1, Bit 2: 0 = Medium
Bit 3: 1, Bit 2: 1 = High
the following symptoms occurs.
Communication error with error codes such as
0-20, 0-23, etc.
Modem rate fallback occurs frequently.
ƒ This setting is not effective in V.34
communications.
4
PSTN cable equalizer
(V.8/V.17 rx mode: External)
0: Disabled
1: Enabled
Keep this bit at “1”.
5
Not used
Do not change the settings.
6
Parameter selection for dial
tone detection
0: Normal parameter
1: Specific parameter
0: This uses the fixed table in the ROM for dial tone
detection.
1: This uses the specific parameter adjusted with
SRAM (69ECBEH - 69ECDEH). Select this if the
dial tone cannot be detected when the "Normal
parameter: 0" is selected.
7 Not used Do not change the settings.
G3 Switch 08 - Not used (do not change the settings)
G3 Switch 09 - Not used (do not change the settings)
G3 Switch 0A [SP No. 1-105-011]
No FUNCTION COMMENTS
0-1
Maximum allowable carrier
drop during image data
reception
Bit 1: 0, Bit 0: 0 = 200 (ms)
These bits set the acceptable modem carrier drop
time.
Try using a longer setting if error code 0-22 is
frequent.