Playback Chroma Level Adjustment (Va-102 Board); Playback Burst Level Adjustment (Va-102 Board) (Pal Model Only) - Sony DSR-20MD Service Manual

13. Playback Chroma Level Adjustment
(VA-102 Board)
Mode Recording
Signal DV input (Note 1)
Measurement Point Pin qa of CN401 (CL435)
Measuring Instrument Oscilloscope
Adjustment Element RV406
A = 670 ± 10 mV (NTSC)
Specified Value
A = 660 ± 10 mV (PAL)
Note 1: Generate color bar signal with NTSC: DCR-VX1000/
PAL: DCR-VX1000E and enter it to the DV terminal.
(How to generate color bars: Connect the adjusting re-
mote commander to the NTSC: DCR-VX1000/PAL:
DCR-VX1000E, and set data: 09 to page: 5, address: 02.
After adjustment, be sure to return the data to "00".)
Note 2: Perform this adjustment after confirming that the speci-
fied value in the following adjustment of the JC-19 board
has been satisfied.
1. Playback CR Signal Level Adjustment.
2. Playback CB Signal Level Adjustment.
Adjusting method:
1) Set the red signal level (A) to the specified value using RV406.
Fig. 5-3-25.
Red
H
14. Playback Burst Level Adjustment (VA-102 Board)
(PAL model only)
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Element
Specified Value
Note 1: Generate color bar signal with NTSC: DCR-VX1000/
PAL: DCR-VX1000E and enter it to the DV terminal.
(How to generate color bars: Connect the adjusting re-
mote commander to the NTSC: DCR-VX1000/PAL:
DCR-VX1000E, and set data: 09 to page: 5, address: 02.
After adjustment, be sure to return the data to "00".)
Note 2: Perform this adjustment after confirming that the speci-
fied value in the following adjustment of the JC-19 board
has been satisfied.
1. Playback CR Signal Level Adjustment.
2. Playback CB Signal Level Adjustment.
Adjusting method:
1) Set the burst signal level (A) to the specified value using RV402.
A
5-81
Recording
DV input (Note 1)
Pin qa of CN401 (CL435)
Oscilloscope
RV402
A = 300 ± 10 mV (PAL)
H
Fig. 5-3-26.
A