Sharp LC-32LE260M Service Manual page 13

LC-32LE260M
No sound from the HDMI sound input terminal.
(INPUT 1 analog audio)
Is there the L-ch audio signal input from pin (2) of external input
terminal J501 (HDMI AUDIO IN) to pin (28) of IC3301?
Is there the R-ch audio signal input from pin (3) of external input
terminal J501 (HDMI AUDIO IN) to pin (29) of IC3301?
Are I2S signal output from the pins (42), (43) of IC3301 normally?
Is there audio signal input at pin(22),(32) of IC1702
Is the L- ch audio signal output at pin ( 10 ),(11),(16),(17) of
IC1702 normal ?
Is the R- ch audio signal output at pin(2),(3),(8),(9) of IC1702
normal?
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1702 normal?
Check speakers and their peripheral circuits.
No audio heard (4)
YES
YES
YES
YES
YES
YES
NO Check peripheral circuits of IC3301.
NO Check connection between IC3301 and IC1702 and its periph-
eral circuits.
NO Check IC1702 and its peripheral circuits.
NO Check circuit between IC1702 & P1702.
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