Sony Betacam SX DNW-A100 Maintenance Manual page 252

6-2. APR-12 Board Replacement
Setting of the setup extend menu
. For the DNW-A100/A50/A45
None.
. For the DNW-A100P/A50P/A45P
Set the ITEM-F01: AUDIO NR IN SP MODE to "SW".
m
. To display the ITEM-F00 series, turn the search dial while pressing the PLAY button.
. After adjustments are completed, return the ITEM-F01 to "ON".
1. Unity Level Adjustment
n
When the optional kit BKNW-105 is equipped in the DNW, "Unity Level Adjustment" is not needed.
Measuring equipment: Audio analyzer (dBm mesurement mode, 80 kHz LPF)
n
More than 20 minutes should elapse after turning the power on, when this adjustment is performed.
CH1 adjustment
(1) Input the audio signal 1 kHz, +4.0 dBm(600 Z) to AUDIO INPUT CH1 connector.
(2) Connect the input of audio analyzer to AUDIO OUTPUT CH1 connector.
(3) Perform adjustment.
Adjustment point: 1RV101/APR-12(A-3)
+4.0 ± 0.1 dBm (at 600 Z load)
Specification:
CH2 adjustment
(1) Input the audio signal 1 kHz, +4.0 dBm(600 Z) to AUDIO INPUT CH2 connector.
(2) Connect the input of audio analyzer to AUDIO OUTPUT CH2 connector.
(3) Perform adjustment.
Adjustment point: 1RV201/APR-12(E-3)
+4.0 ± 0.1 dBm (at 600 Z load)
Specification:
6-14
A B C D
A No.
E500
RV504
RV502
TP501
TP500
RV500
S500
RV503
RV501
COR100
RV103
TP101
RV100
COR101
+4 –3
0 –20
RV101
20 18 16
RV102 E100
TP100
COR300
16 18 20
COR301
UNITY (L) VAR (L) UNITY (R)
COR302
+4
TP300 TP400
0
–3 >EP–GW<
–20
RV300
E300
APR-12 Board (Side A)
APR–12 E F G
LOTNO, S NO,
E600
RV605
TP601
RV602 1
TP600
RV603
RV600
S600
RV604
RV601
2
COR200
RV203
TP201
RV200
COR201
+4 –3
0 –20
RV201
E200 3
20 18 16
TP560
RV202
TP200
TP700
4
COR400
16 18 20
COR401
VAR (R)
5
COR402
+4
0
–3
–20
RV400
E400
6
TP701
7
DNW-A100/A50/A45
DNW-A100P/A50P/A45P