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1-19 (E)
HDC-900/950 IMM
S104
S103
S1
S101
AU-271 board (A side)
S102
S201
S2
S202
S301
S304
S203
S204
S303
B
C
D
E
F
G
A
54 3 2 1
AU
CM
DYN
INCOM 1
INCOM 1 switch
INCOM 1 MIC GAIN switch
MIC GAIN
DYN
INCOM 2
MIC GAIN
MIC
MONITOR
ON
+
0
_
+
0
_
OFF
INCOM 2 switch
INCOM 2 MIC GAIN switch
MIC MONITOR switch
AU-271 board suffix -13 and higher
(B side)
S300
1
A
B
C
D
E
F
G
2345
1-5. Switch Setting on the Boards
1-5. Switch Setting on the Boards
AU-271 board
Ref. No. Name Contents Factory Setting
S1-1
*1
TRACKER INCOM2 ON/OFF Switch ON to mix the TRACKER TALK signal of the Tracker OFF
connector to CCU INCOM2 RECEIVE OUT.
S1-2
*2
Not used —— ——
S2-1
*2
PGM1 INCOM1 RECEIVE Switch ON to mix the PGM1 signal adjusted the sound volume by OFF
MIX ON/OFF the PGM volume control to the INCOM1 RECEIVE signal before
the sound volume adjustment.
S2-2 PGM2 INCOM2 RECEIVE Switch ON to mix the PGM2 signal adjusted the sound volume OFF
MIX ON/OFF by the PGM volume control to the INCOM2 RECEIVE signal before
the sound volume adjustment.
S101-1 PGM1 MUTE ON/OFF Switch OFF to output the PGM1 signal to the PGM OUT of the OFF
INTERCOM1 connector.
S101-2 PGM2 MUTE ON/OFF Switch OFF to output the PGM2 signal to the PGM OUT of the ON
INTERCOM1 connector.
S101-3 INCOM1 MUTE ON/OFF Switch OFF to output the INCOM1 RECEIVE signal to the PGM OUT OFF
of the INTERCOM1 connector.
S101-4 INCOM2 MUTE ON/OFF Switch OFF to output the INCOM2 RECEIVE signal to the PGM OUT ON
of the INTERCOM1 connector.
S102-1 PGM1 MUTE ON/OFF Switch OFF to output the PGM1 signal to the INCOM OUT of OFF
the INTERCOM1 connector.
S102-2 PGM2 MUTE ON/OFF Switch OFF to output the PGM2 signal to the INCOM OUT of ON
the INTERCOM1 connector.
S102-3 INCOM1 MUTE ON/OFF Switch OFF to output the INCOM1 RECEIVE signal to the INCOM OFF
OUT of the INTERCOM1 connector.
S102-4 INCOM2 MUTE ON/OFF Switch OFF to output the INCOM2 RECEIVE signal to the INCOM ON
OUT of the INTERCOM1 connector.