LC-32R24B
4 – 10
No audio (3)
No audio at UHF/VHF broadcast signal reception
Is TV selected on the input select menu screen?
YES
NO
Is the audio output selected for “VARIABLE” on the
menu screen?
Set the audio output to “FIXED”.
Is there the SIF signal output at pin (15) of tuner (TU1101)?
YES
NO
Check the tuner (TU1101) and its peripheral circuits.
Does the SIF signal come from pin (15) of tuner (TU1101) to pin
(AN23) of IC8001?
YES
NO
Check the line between TU1101 and IC8001.
(Q1101,Q1102, etc.)
Does the audio signal come from pins (AN28) (SPOUT_LP), (AN29)
(SPOUT_RN), (AP28) (SPOUT_LN), and (AP29) (SPOUT_RP) of
IC8001 to pins (5) (SP_LP), (6) (SP_LN), (8) (SP_RN), and (9)
(SP_RP) of IC2701 (AMP)?
NO Check the line between IC8001 and IC2701 and their periph-
eral circuit (AMP_MUTE line, etc.)
YES
Is the audio output from IC2701 as specified? NO Check IC2701 and its peripheral circuits.
YES
Check the connector (P2701), speakers and their peripheral circuits.
Leandro Palmeira
eletronicagaucho@hotmail.com
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