Daewoo DV-F24S, Руководство по обслуживанию

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45
Is the signal from PREAMP circuit
fed to pin
^
of P302?
J. Troubleshooting of PAL colour in the Playback mode.
NO
Check PREAMP circuit
YES
Is the PAL colour signal from
pin
^
of P302 fed to pin
u
of
IC301 through AMP circuit?
NO
Check AMP circuit
YES
Is ON/OFF 5V supplied to pin
3
and
pin
t
of IC301 at 5 volts?
NO
Check ON/OFF 5V
YES
Is EE (L) supplied to anode of
D302 at 5 volts?
NO
Check EE (L)
YES
Is the PAL colour signal from
pin
u
of IC301 fed to pin
+
and pin
=
of IC301?
NO
Check X301
YES
Is the signal from pin
+
and
pin
=
of IC301 fed to pin
$
and
pin
@
of IC302 respectively?
NO
Change IC301
YES
To OSD circuit
YES
Is the signal obtained
from pin
“
of IC302?
NO
Check IC302
YES
Is the colour signal from pin
“
of IC302 fed to pin
w
through
pin
E
of IC301?
NO
Check IC301 and R333
YES
Is colour rotary supplied
to pin
7
of IC301?
NO
* The AMP circuit consists of
Q313, R347, R346, R348
and C365.
Check colour rotary