Burst Cleaning Adjustment For Pal Model (Cb-61 Board); Color Adjustment For Pal Model (Cb-61 Board) - Sony GV-D300 Service Manual

8. Burst Cleaning Adjustment for PAL model
(CB-61 board)
Adjust to the optimum PAL chroma signal demodulation phase. If
the phase is not correct, moire distortion noises will stand out.
Mode VTR stop
Signal Color bar
Pin 2 of CN9925 (VG)
Measurement Point
Measuring Instrument Oscilloscope
Adjustment Page D
Adjustment Address 60
Specified Value A = 0 ± 50mV
Note: Perform "8. Burst Cleaning Adjustment for PAL model" and "9.
Color Adjustment for PAL model" alternately until each specified
value is satisfied.
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 60, change the data and set the flicker
amplitude(A) of the cyan or green section to minimum.
3) Press the PAUSE button of the adjustment remote commander.
4) Select page: 0, address: 01, and set data: 00.
5) Perform "Color Adjustment for PAL model".
Cyan
A
Fig. 5-3-31.
2H

9. Color Adjustment for PAL model (CB-61 board)

Set the color saturation to the standard value. If deviated, the color
will be to dark or light.
Mode
Signal
Measurement Point
Measuring Instrument
Adjustment Page
Adjustment Address
Specified Value
Adjusting method:
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 6D, change the data and set the voltage
(A) between the yellow and green to the specified value.
3) Press the PAUSE button of the adjustment remote commander.
4) Select page: 0, address: 01, and set data: 00.
5) Check that the specified value of "Burst Cleaning Adjustment"
is satisfied, if not perform "Burst Cleaning Adjustment".
Yellow
Green
A
5-37
VTR stop
Color bar
Pin 2 of CN9925 (VG)
Oscilloscope
D
6D
A = 0.54 ± 0.05V
2H
Fig. 5-3-32.