LC-32LE250M
7 – 4
No audio heard (1)
No sound in the UHF/VHF reception.
Is the IF output from the tuner pin (8) of TU1101 as specified?
NO
Check TU1101 and its peripheral circuits.
YES
Is there the I2C signal input at pins (42), (43) of IC3301?
NO
Check IC3301 and its peripheral circuits.
YES
Is there audio signal intput at pin(22),(32) of IC1702?
NO
Check connection between IC3301 and IC1702 and its
peripheral circuits.
YES
Is the L-ch audio signal output at pin(10),(11),(16),(17) of IC1702
NO
Check IC1702 and its peripheral circuits.
Is the R-ch audio signal output at pin(2),(3),(8),(9) of IC1702 normal ?
YES
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1702 normal?
NO
Check circuit between IC 1702 & P1702.
YES
Check speakers and their peripheral circuits.
normal ?
Содержание LC-32LE250M
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Страница 28: ...LC 32LE250M 9 3 A C B D E F G H 2 10 9 8 7 6 5 4 3 1 LED A Chip LED A Symbol ...
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