LG LH-CX640 Series Service Manual page 33

3-16
(C)
Hi-Fi
REC.
It
is
impossible
to
record
Hi-Fi
Audio
signal.
Check
Vcc of
IC801.(Pins34,
40)
YES
YES
Check
IC801
Pin42(Data),
Pin43(CLOCK).
YES
Do
Audio
signals
appear
at
IC801
Pins16,
17?
YES
Do
FM
Audio
signals
appear
at
IC801
Pin36?
YES
Check
the
Contact
Point of
Drum
Connector
if
good
then
Replace
the
Drum.
YES
CheckPower
5V,
12VT.
NO
Check
ports of
\316\274-COM.
Check
Audio
input
signal of
IC801
Pins2,
3(TU.A.), 4 ,
5(DVD.A.),
6, 7(AVI.A.),
8, 9(AV2.A.),
10, 11(AV3.A
.).
NO
Replace
IC801.
NO
NO