Sony EVO-720P - Page 243

+4, REC Y Level Adjustment (HK-3 Board)
te: This adjustment is unnecessary for the player
835, Y//C Separation Adjustment (HK-3 Board)
Mode EE
Signal Color bar
Measurement Point Pin ® of 1C201
Measuring Instrument | Oscilloscope
Adjusting Element
RV202 and LV201
(COMB FILTER)
side,
lode EE |
ignal Color bar |
leasurement Point TP101 (REC Y)
leasuring Instrument | Oscilloscope :
djusting Element RV701 (REC Y)
pecified Value 0.50£0.02 Vp-p |
nnection :
Remove CN002 from the DM-24 board,
Connect JO37 on the JB-IP board (recorder video
input terminal) to Pin @ (EXT Y IN) of CN103
on the HK-3 board with a jumper.
Connect Pin @ (EXT/INT) of CN103 on the HK-
3 board to GND with a jumper.
justing method :
Confirm tht the video signal level at Pin @ of
CN103 is 1,00 Vp-p,
Adjust the video signal tevel at
0,500.02 Vp-p with RV701
TP101 to
White (10096)
0.5020.02 Vp-p
Fig. 8-15. REC Y level adjustment
Minimum residual chroma
Specified Value
component
Adjusting method:
1) Connect to ground, Base of Q212 on HK-3 board.
2) Adjust RV202 and LV201 alternately so as to mini-
mize the residual chroma component.
residual chroma
component
Before
adjustment
LJ
After
adjustment
econ
Fig. 8-16. Y/C separation adjustment
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