6-37
DNW-A22/A22P
OXIDE Y adjustment [to step (56)]
(42) Turn RV103/DM-89(E-5) counterclockwise fully when exist it.
n
RV103 is not equipped on the DM-89 board of the LOT Nos. 407 and higher.
(43) Short-circuits TP4/DM-89(E-1) and E702/DM-89(D-1) with a shorting clip.
(44) Connect the output of network analyzer to TP103/DM-89(E-6). GND: E103/DM-89(F-6)
(45) Connect the oscilloscope’s CH-2 to TP104/DM-89(F-5). GND: E104/DM-89(G-5)
(46) OXIDE Y, Group delay adjustment
Adjust the delay time at 8 MHz use 4 MHz as the reference.
Adjustment point:
1
RV104/DM-89(E-5)
Specification: DNW-A22:
A = 40
±
5 ns
DNW-A22P: A = 40
±
3 ns
DNW-A22
DNW-A22P
(47) Enter A33 : DM VR 2 of the maintenance mode.
(48) Connect the oscilloscope’s CH-2 to TP3/DM-89(E-1). GND: E702/DM-89(D-1)
(49) OXIDE Y, Main adjustment
(i)
Adjust the level difference at 8 MHz use 2 MHz as the reference.
Adjustment point: A33 : DM VR 2 : MAIN OXIDE-Y-A
Specification:
DNW-A22:
B =
+
2.0
±
0.5 dB
DNW-A22P:
B =
+
2.5
±
0.5 dB
DNW-A22
DNW-A22P
(ii) Set the data value of A33 : DM VR 2 : MAIN OXIDE-Y-B to the identical data value as MAIN
OXIDE-Y-A.
(50) To exit A33 : DM VR 2, press the MENU button once.
6-3. DM-89 Board Replacement
[ns]
A
4
8
[MHz]
0
[ns]
A
4
8
[MHz]
0
[dB]
B
2
8
[MHz]
0
A(
*
)MAG: 1 dB
[dB]
B
2
8
[MHz]
0
A(
*
)MAG: 1 dB
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 ...