Name: Sharp LC-40LE700E
Brand: Sharp
Rating: 5 (1 reviews)

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LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S

6 – 5

The sound is not emitted from the speaker though the picture has come out.

No sound output in all modes.?

YES

Is the SPK_OUT communication output to from pins (N29/

SPK_OUT_R) (N30/SPK_OUT_L) of IC3302

(Digital AV decode & Main CPU)?

NO Check IC3302 and its peripheral circuits.

YES

Is the SPK_OUT communication sent to pins(3),(7) of IC2701

(POWER_AMP) from of IC3302?

NO Check the line between IC3302 and IC2701.

YES

Is the audio signal output of pin(27, 28/L-ch), (11, 12/R-ch) of

IC2701 (POWER_AMP) normal?

NO Check IC2701 and its peripheral circuits.

YES

Is the audio signal output of pins (1, 2/L-ch), (4, 3/R-ch) of

P2701(SP) terminal normal?

NO P2701(SP) terminal and the peripheral circuit (L/C filter) are

checked.

YES

Check Speaker (right and left) and wire harness.

No sound (during the reception of TV(ANALOG) broadcasting)

Does not the sound go out though the picture has come out when UHF/VHF is received?

YES

Is a SIF signal output from pin (4) of TUNER (TU1101)? NO Check the tuner and its peripheral circuits.

Replace as required.

YES

Is a SIF signal input to (AB27/S_IF) of IC3302(Digital AV decode

& Main CPU) from pin (4) of TU1101?

NO Check the line between TU1101 and IC3302.

(Q1104, etc.)

YES

Refer to “No sound output in all modes”

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