LC-32D41U/LC-32M41U/LC-40C32U
6 – 2
No audio output during UHF/VHF reception
Is SIF output from the tuner (TU1101_Pin3) normal?
NO
Check the tuner and peripheral circuits.
YES
Is input signal fed to pin 21 (SOUNDIF 1) of IC1401 (SIF Demod-
ulator) normal?
NO
Check the filter circuits (Q1144 and Q1102-3) and peripheral cir-
cuits.
YES
Are audio signals from pins 29 and 30 (SC2_OUTL/R) of IC1401
to pins 51 and 52 of IC1403 (CODEC) normal?
NO
Check between pins 29 and 30 (SC2_OUTL/R) of IC1401 and
pins 51 and 52 of IC1403 (CODEC).
YES
Are audio outputs (A-OUT_L/R) of pins 38 and 39 of IC1403 nor-
mal?
NO
Are the LRCK, BICK, SDTO and SDTI signals sent from IC1403
to IC1406 (DSP) normally?
YES
YES
Check IC1403 and peripheral circuits.
Is audio input from pins 38 and 39 of IC1403 to pins 11 and 15 of
IC2701(STEREO_AMP) normal?
NO
Check the circuits between pins 38 and 39 of IC1403 and pins 11
and 15 of IC2701. (MUTE circuits: Q1306-8)
YES
Is audio output from IC2701 normal?
NO
Check IC2701 and peripheral circuits.
YES
Is the speaker switching circuit (T2701)
YES
Check the connector (P2703) of AV_UNIT and around the speak-
ers.
No monitor audio output
Is monitor audio output set to “Variable”?
YES
Reset monitor audio output to “Fixed”.
NO
Are audio output pins 40 and 41 of IC1403 (CODEC) normal?
NO
Check IC1403 and peripheral circuits.
YES
Are audio output pins 7 and 1 of IC1407 (Buffer_AMP) normal?
NO
Check IC1407 and peripheral circuits.
YES
Check between IC1407 and MONITOR OUTPUT terminal (pins
10 and 16 of J502).
Summary of Contents for Aquos LC32D41U
Page 13: ...LC 32D41U LC 32M41U LC 40C32U 4 3 10 Disconnect all the connectors from all the PWBs ...
Page 49: ...LC 32D41U LC 32M41U LC 40C32U 9 2 10 11 12 13 14 15 16 17 18 19 ...
Page 53: ...LC 32D41U LC 32M41U LC 40C32U 9 6 10 11 12 13 14 15 16 17 18 19 ...
Page 57: ...LC 32D41U LC 32M41U LC 40C32U 9 10 10 11 12 13 14 15 16 17 18 19 ...
Page 61: ...LC 32D41U LC 32M41U LC 40C32U 9 14 10 11 12 13 14 15 16 17 18 19 ...
Page 64: ...LC 32D41U LC 32M41U LC 40C32U 9 17 2 IF Unit A C B D E F G H 1 2 3 4 5 6 IF Unit Side A ...
Page 69: ...LC 32D41U LC 32M41U LC 40C32U 10 3 10 11 12 13 14 15 16 17 18 19 ...
Page 70: ...LC 32D41U LC 32M41U LC 40C32U 10 4 MAIN Unit 2 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Page 71: ...LC 32D41U LC 32M41U LC 40C32U 10 5 10 11 12 13 14 15 16 17 18 19 ...
Page 72: ...LC 32D41U LC 32M41U LC 40C32U 10 6 MAIN Unit 3 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 92: ...LC 32D41U LC 32M41U LC 40C32U 10 26 MAIN Unit 13 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Page 93: ...LC 32D41U LC 32M41U LC 40C32U 10 27 10 11 12 13 14 15 16 17 18 19 ...
Page 94: ...LC 32D41U LC 32M41U LC 40C32U 10 28 MAIN Unit 14 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Page 95: ...LC 32D41U LC 32M41U LC 40C32U 10 29 10 11 12 13 14 15 16 17 18 19 ...
Page 96: ...LC 32D41U LC 32M41U LC 40C32U 10 30 MAIN Unit 15 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Page 97: ...LC 32D41U LC 32M41U LC 40C32U 10 31 10 11 12 13 14 15 16 17 18 19 ...
Page 98: ...LC 32D41U LC 32M41U LC 40C32U 10 32 MAIN Unit 16 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 102: ...LC 32D41U LC 32M41U LC 40C32U 10 36 MAIN Unit 18 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 104: ...LC 32D41U LC 32M41U LC 40C32U 10 38 MAIN Unit 19 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
Page 105: ...LC 32D41U LC 32M41U LC 40C32U 10 39 10 11 12 13 14 15 16 17 18 19 ...
Page 106: ...LC 32D41U LC 32M41U LC 40C32U 10 40 MAIN Unit 20 22 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 114: ...LC 32D41U LC 32M41U LC 40C32U 10 48 IF Unit 2 2 A C B D E F G H 1 2 3 4 5 6 7 8 9 10 ...
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Page 116: ...LC 32D41U LC 32M41U LC 40C32U 10 50 4 R C LED Unit A C B D E F G H 1 2 3 4 5 6 ...
Page 117: ...LC 32D41U LC 32M41U LC 40C32U 10 51 5 KEY Unit A C B D E F G H 1 2 3 4 5 6 ...