Sony DNW-A100 Maintenance Manual page 180

4-3. AD-105 Board (BKNW-104)
(5) Select "R-Y FREQ COMP".
(6) Adjust "R-Y FREQ COMP" that the fluctuation level is minimum.
(7) Regard 1st signal of each frequency as 100 % (REF), then check that the level of signal after looping
satisfies the specifications.
(8) Select "B-Y FREQ COMP".
(9) Adjust "B-Y FREQ COMP" that the fluctuation level is minimum.
(10)Regard 1st signal of each frequency as 100 % (REF), then check that the level of signal after looping
satisfies the specifications.
R-Y/B-Y signal
Before adjustment
[|Supplement|] The signal after looping is displaied in a state of overlapping on 1st signal on the screen of the waveform monitor.
They appear that the 1st signal is freezing and the signal after looping is changing the fluctuation level.
(11)After completing the adjustment, push the MENU button once so as to exit A22: AD VR (LOOP).
(12)Select A2F: NV-RAM CONTROL and save the adjusted data in NV-RAM (execute "SAVE ALL
ADJUST DATA").
(13)Check that the message "Save Complete" is displayed on the video monitor screen.
(14). For 525/60 system
Push the MENU button four times so as to exit the maintenance mode.
. For 625/50 system
Perform "8. Component Video Betacam Level Check and Adjustment".
4-26
After adjustment
1.0 2.0
0.5 1.5 2.75 MHz
Specifications : Fluctuation level is minimum.
0.5 to 2.0MHz : REF ±11 % (0 ±1.0 dB)
+0
2.75 MHz : REF % (0
–24
+0
dB)
– 3.0
DNW-A100P/A50P/A45P
DNW-A100/A50/A45