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2. PB Video Phase Confirmation
Measuring equipment: Composite waveform/vector monitor
Y phase confirmation [to step (14)]
(1) Set the composite waveform/vector monitor as follows:
WAVEFORM mode, SWEEP: 2H, MAG ON, INPUT: CH-A, INT REF
(2) Display the BURST signal part of CH-A side on the composite waveform/vector monitor.
(3) Playback the color-bar signal portion (14:00 to 17:00) of the alignment tape CR5-1B or CR5-1B PS.
(DNW-A22: CR5-1B, DNW-A22P: CR5-1B PS)
(4) Confirm that time between the 50% position at rising edge of H SYNC signal and the 50% position at
the rising edge of white signal portion.
If the specification is not satisfied, perform the adjustment.
Adjustment point: 1RV300/TBC-24(D-1)
A = 5.2 ± 0.1 µs
Specification:
If the specification is not satisfied by adjustment, perform step (5) through (8) after setting RV300 to
the mechanical center.
Composite waveform/vector monitor
Perform following steps (5) through (8) only when the specification in step (4) is not satisfied.
(5) Playback the burst signal portion (14:00 to 17:00) of the alignment tape CR5-1B or CR5-1B PS
again.
(6) Enter the maintenance mode, then enter A37 : TBC VR.
(7) Change the data value of item "SQ Y RZ" within +1 or _1.
(8) Perform step (4) again.
Data save [to step (13)]:
Perform the data save only when SQ Y RZ's data value of
A37 : TBC VR is changed.
(9) To exit A37 : TBC VR, press the MENU button on
the lower control panel.
(10) Enter A3F : NV-RAM CONTROL, then execute
"SAVE ALL ADJUST DATA".
(11) Check that the message "Save Complete" is displayed
on the video monitor.
(12) To exit A3F : NV-RAM CONTROL, press the
MENU button once.
(13) To exit the maintenance mode, press the MENU
button three times again.
(14) 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 "3. TBC Y/C Delay Confirma-
tion".
DNW-A22/A22P
50 %
50 %
A
6-6. TBC-23 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
6-83
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