Table of Contents
LC-32LE280X/LC-40LE280X
No sound in the UHF/VHF reception.
Is the IF output from the tuner pin(6,7,8,9)
of TU1102 as specified ?
2
c
I
signal input a t pins (98 ), (99) of IC3301?
Is there the
I
t s
e h
e r
a
d u
o i
i s
n g
l a
t n i
u p
Is the L-ch audio signal output at pin (8),(13)
of IC1702 normal?
Is the R-ch audio signal output at pin (19) ,(23)
of IC1702 normal?
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1701 normal?
Check speakers and their peripheral circuits.
YES
YES
a t
p t
n i
(1,2,3,4) of IC1702 ?
YES
YES
YES
No audio heard (1)
NO
Check TU1102 and its peripheral circuits.
NO
Check IC3301 and its peripheral circuits.
N
O
C
e h
k c
c
n o
peripheral circuits.
NO
Check IC1702 and its peripheral circuits.
NO
Check circuit between IC1702 & P1701.
4 – 4
e n
i t c
n o
e b
w t
e
n e
C I
3 3
1 0
a
d n
C I
7 1
2 0
a
d n
s t i
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