Sony Digital HDVS HDC-900 Maintenance Manual page 23

1-9. How to Supply a Power of + + + + + 12 V
Each the model HDC-900/910 and HDC-950/930 can
supply 12 V for MIC POWER to the microphone connect-
ed the AUDIO IN connector.
AU-271 board suffix -12
When require this power output:
First replace the resisters as shown in the side A and B of
the AU-271 board as follows.
Refer to the Operation Manual and set on the MIC POW-
ER switch of AUDIO IN connector.
R526, R529, R538, R541
Old part No. New part No.
1-216-797-11 (10 Z) 1-216-837-11 (22 kZ)
5 4 3 2
A
B
C
D
E
R526
F
R538
G
AU-271 Board (A side)
1 2 3 4
R529
R541
AU-271 Board (B side)
HDC-900/950 MM
1
5
A
B
C
D
E
F
G
AU-271 board suffix -13 and higher
Set the switch S300 on the AU-271 board to ON, and set
on the MIC POWER switch of AUDIO IN connector
referring to the Operation Manual.
1 2 3 4
AU-271 board (B side)
Ref. No. Contents
S300-1 * Switch ON to supply +12 V for MIC POWER to
the microphone connected the AUDIO IN 1
connector.
*
S300-2 Switch ON to supply +12 V for MIC POWER to
the microphone connected the AUDIO IN 2
connector.
* : For details, refer to Section 1-5 of the Installation and Maintenance
Manual.
1-9. How to Supply a Power of +12 V
5
A
B
C
D
E
F
S300
G
1-11 (E)