Daewoo DV-K*04W Series, Руководство по обслуживанию, Страница: 45 / 114

FLOW CHART 42
G. TROUBLESHOOTING OF COLOUR IN THE PLAYBACK MODE.
NO
YES
NO
Check IC301
Check the ON/OFF +5V
Is ON/OFF +5V supplied to
pin
y
and pin
}
of IC301?
NO
Is the RF signal from pin
3
of
IC401 fed to pin
5
of IC301?
NO
YES
Check C ROTARY
Is the C ROTARY supply to
pin
l
of IC301?
YES
To OSD circuit
YES
NO
Check R336, R337, C342,
IC302, and adjacent circuit
Is the color signal from pin
5
of IC301 fed to pin
]
and
pin
a
of IC301?
Is color signal from pin
]
and pin
a
of IC301 fed
to pin
3
of IC302?
YES
NO
Check Q304, R321,
C334, C328
Is color signal from pin
3
of IC302 fed to pin
{
of IC301
through pin
s
and pin
[
?
YES
Is the RF signal obtained from
pin
3
of IC401?
NO
YES
TO PRE-AMP IN THE
PLAYBACK MODE
Check Q305, adjacent
and PCB pattern
* The pin # of IC401 is changed according to SET.
DV-K884W (6 Heads) : LA70020 (36PIN DIP)
DV-K484W (4 Heads) : LA70011 (24PIN DIP)
DV-K284W (2 Heads) : LA70001 (24PIN DIP)
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NOTE: Refer to 74page, Hi-Fi/PRE-AMP CIRCUIT DIAGRAM.