Sony EVO-720P - Page 247

33-16. GCA Adjustment (HK-3 Board)
83-17. fH VCO Adjustment (HK-3 Board)
Mede
Playback
Pause
pe
EE
Signal Arbitrary tape Signal Colour bar
Measurement
Point
Pin
@
of
IC304
Measurement
Point
CHi:
Pin
@
of
1C304
Measuring
Instrument
|
Oscillocope
CH2:
TP103
Adjusting
Element
RV303
Measuring
Instrument
|
Oscilloscope
Specified
Value
500425
mVp-p
Adjusting
Element
RV304
.djusting method:
) Adjust with RV303 so that it becomes 500 +25 mVp-p.
) Set to either the STILL, CUE and Review mode, and
be sure to confirm that the thickness of the colour
does not differ from that of the playback mode. If
necessary, adjust with RV303. (Be sure to play back
a tape of LP mode.)
500425 mVp-p
h———-+
0.23 psec
Fig. 8-26.
Specified Value
14.540.2 psec
Adjustment method:
1) Adjust RV304 so that the TR of CH1 is 14.5 £0.2 psec.
2) Confirm that the H (time) of CHI and CH2 is stable.
Ta=14.520.2 psec
TF
cH
la
Ne
1.6
Vpn
pai
CH2
[ieee
—
1.0 Vp-p
ost
Fig. 8-27. fH VCO adjustment
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