6-13
DNW-A22/A22P
1. Offset Level Adjustment
Measuring equipment:
Oscilloscope
n
More than 20 minutes should elapse after turning the power on, when this adjustment is performed.
(1) Short-circuit TP101/APR-12(B-3) and E100/APR-12(C-3) with a shorting clip.
(2) Short-circuit TP201/APR-12(F-3) and E200/APR-12(G-3) with a shorting clip.
(3) Connect and set the oscilloscope as follows:
CH-1:
TP700/APR-12(G-3), DC 5 V/DIV, 2
u
s/DIV
CH-2:
TP701/APR-12(G-6), DC 5 V/DIV
Trigger: CH-2,
_
slope
(4) Adjust
1
RV103/APR-12(D-2) so that the audio CH1 part of the waveform at TP700 makes the same
waveform to the Figure 1 (left side).
(5) Adjust
1
RV203/APR-12(G-2) so that the audio CH2 part of the waveform at TP700 makes the same
waveform to the Figure 1 (right side).
APR-12 Board (Side A)
6-2. APR-12 Board Replacement
Audio CH1
TP701
Oscilloscope
TP700
(OK)
16-Bit
4-Bit
Audio CH2
16-Bit
4-Bit
NG
Figure 1. Waveform of CH1/CH2 Offset Level Adjustment
(6) Disconnect the shorting clips from TP101, TP102,
E100, and E200.
S600
RV600
RV601
RV602
TP600
RV603
TP601
RV604
RV605
E600
TP501
RV503
TP500
RV501
RV502
RV500
S500
RV203
E200
TP700
TP560
COR201
20 18 16
TP201
RV103
E100
COR101
20 18 16
TP101
COR400
16 18 20
COR401
VAR (R)
UNITY (R)
TP400
RV400
E400
TP701
COR402
+4
0
–3
–20
COR300
16 18 20
COR301
VAR (L)
UNITY (L)
TP300
RV300
E300
COR302
+4
0
–3
–20
1
2
3
4
5
6
7
A
A
B
RV504
E500
C
D
E
F
G
A No.
LOTNO,
S NO,
APR–12
1-661-132-
MADE IN JAPAN
>EP–GW<
Содержание Betacam SX DNW-A22
Страница 37: ...2 11 DNW A22 A22P 2 8 Location of Main Parts Front View Rear View ...
Страница 38: ...2 12 DNW A22 A22P 2 8 Location of Main Parts Top View of Cassette Compartment Top View of Mechanical Deck ...
Страница 49: ...2 23 DNW A22 A22P 2 14 Fixtures and Adjustment Equipment List 1 5 9 2 6 0 3 7 4 8 18 10 d l l S G L 6 6 d d ...
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Страница 286: ...Printed in Japan Sony Corporation 2001 6 08 B P Company 1997 DNW A22 SY DNW A22P SY E 3 193 847 06 ...