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KV-1412EC
KV-1412EC
RM-635
RM-635
1.
Connect a 47 UF/16V
capacitor bet-
ween pins
71 and 9 of IC507.
2.
Connect a 3.3 kQ resistor between
pin 20 of 1C507 and pin 19 of IC3017.
3.
Short-circuit
electrolytic
Capacitor
(C027).
Adjust RV503
for stable picture.
fo: too low
fo: suitable
fo: too high
oscilloscope (A)
1.
Feed in a special color-bar signal.
3.
Adjust T3071 and RV305 to obtain the
waveform
as shown.
anti-pal signal
Adjust T301 and RV305
correct waveform
1.
Feed
in a black
and
white
off-air
Signal.
2.
Connect a 1 pF/50V capacitor bet-
ween
pin 16 of iC301
and ground
during this adjustment.
Adjust RV302 so that the voltage on
pin 13 of IC301
is 7.9 + 0.1V ac.
APC (4.433 MHz)
1.
Feed ina color-bar signal from color-
bar/pattern generator.
2.
Connect a 100 kQ resistor between
pin 13 of 1C301
and ground during
this adjustment.
3.
Connect a 10 wF/16V
capacitor bet-
ween
pin 16 of IC301
and ground
during this adjustment.
4.
Adjust
RV304
for the stable
color
pattern.
=25->
26>
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