Sony Betacam SX DNW-A100 Maintenance Manual page 347

Y phase confirmation [to step (28)]
(16) Set the component waveform monitor to BOWTIE mode.
(17) Playback the bowtie signal portion (17:00 to 19:00) of the alignment tape CR5-1B or CR5-1B PS.
(DNW-A100/A50/A45: CR5-1B, DNW-A100P/A50P/A45P: CR5-1B PS)
(18) Adjust the deviation A between the center marker and bowtie dip point of CH-1/CH-2 (Y/B-Y).
Adjustment point: 1RV300/TBC-24(D-1)
A = 0 ± 10 ns
Specification:
If the specification is not satisfied by adjustment, perform steps (19) through (22) after setting
RV300 to the mechanical center.
Component waveform monitor
Perform following steps (19) through (22) only when the specification in step (18) is not satisfied.
(19) Playback the bowtie signal portion (17:00 to 19:00) of the alignment tape CR5-1B or CR5-1B PS
again.
(20) Enter the maintenance mode, then enter A37 : TBC VR.
(21) Change the data value of item "SQ Y RZ" within +1 or _1 so that the bowtie dip point moves
closer to the center marker.
(22) Perform step (18) again.
Data save [to step (27)]:
Perform following steps (23) through (27) only when SQ Y RZ's data value of A37 : TBC VR is
changed.
(23) To exit A37 : TBC VR, press the MENU button on the lower control panel.
(24) Enter A3F : NV-RAM CONTROL, then execute "SAVE ALL ADJUST DATA".
(25) Check that the message "Save Complete" is dis-
played on the video monitor.
(26) To exit A3F : NV-RAM CONTROL, press the
MENU button once.
(27) To exit the maintenance mode, press the MENU
button three times again.
(28) 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 "6. TBC Y/C Delay Rough
Adjustment".
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
Center marker
CH-1/CH-2 CH-1/CH-3
A
6-8. TBC-24 Board Replacement
TBC-24 board (suffix-11 and 12)
RV300
RV201 RV200 RV500 RV501
TBC-24 board (suffix-13 and higher)
RV300
RV201 RV500 RV501 RV504
RV300 on TBC-24 Board
RV101
RV101
6-109