Sony Betacam SX DNW-A100 Maintenance Manual page 301

(3) Change the connection of the oscilloscope as follows:
CH-1: TP403/DM-89(D-6), GND: E303/DM-89(B-1)
CH-2: TP5/DM-89(D-1), GND: E702/DM-89(D-1)
(4) METAL C adjustment
Playback the RF sweep signal portion (0:00 to 2:00) of the alignment tape CR5-1B or CR5-1B PS,
and perform the adjustment.
(DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS)
Adjustment point: 1RV401/DM-89(G-4)
Specifications: See the table below.
Frequency
6 MHz
8 MHz
10 MHz
100%
1
DNW-A100/A50/A45
(5) Stop the playback of the alignment tape CR5-1B/CR5-1B PS or eject it.
n
It is not necessary to eject the alignment tape when perform subsequent "12. DM RF Output Level
Adjustment".
(6) OXIDE Y/C adjustment
Set the following RVs on DM-89 board to each specified position as show below.
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
Specification
Reference: 100% {0 dB}
100 ±20 % {0 ± 2.0 dB}
+40 +4.0
110 % {1.0 dB}
_20 _2.0
6 8 10 [MHz]
RV202 (G-5) RV402 (C-4)
100%
1 4 6
DNW-A100P/A50P/A45P
6-4. DM-89 Board Replacement
8 10 [MHz]
6-63