Sharp LC-60LE740E Service Manual page 133

LC-60/70LE740E/RU,741E/S,743E,60LE840E/RU,841E/S,843E,80LE645E/RU,646E/S,648E
Does not the sound go out though the picture has come out when DTV is received?
In the case of LE840,LE843 series, refer to (A).
In the case of LE841 series, refer to (B).
Do IF signals output to pins [10, 11] of TUNER
(TU1102)?
Do IF signals input to pins [35/IFPGA_INN, 36/
IFPGA_INP] of IC4402 (CI Cont & DTB-T/C Demod)?
Do TS signals output to pins [15/DEMOD_TS_DATA0,
16/DEMOD_TS_SYNC, 17/DEMOD_TS_VAL, 18/
DEMOD_TS_CLK] of IC4402?
Do TS signals input to pins [U30/DEMOD_TSDATA0,
V30/DEMOD_TSSYNC, V29/DEMOD_TSVAL, U32/
DEMOD_TSCLK] of IC3303 (Digital AV decode & Main
CPU)?
Refer to "The sound is not emitted from the Speaker & Woofer though the picture has come out."
(B)
Do TS signals output to pins [19/TS_TUOUT_CLK, 17/
TS_TUOUT_SYNC, 18/TS_TUOUT_VAL, 20~27/
TS_TUOUT_D0~7] of TUNER (TU1104)?
Do TS signals input to pins [45/TS_TUOUT_CLK, 46/
TS_TUOUT_SYNC, 47/TS_TUOUT_VAL, 48, 51~57/
TS_TUOUT_D0~7] of IC4402 (CI Cont & DTB-T/C Demod)?
Do TS signals output to pins [15/DEMOD_TS_DATA0, 16/
DEMOD_TS_SYNC, 17/DEMOD_TS_VAL, 18/
DEMOD_TS_CLK] of IC4402?
Do TS signals input to pins [U30/DEMOD_TSDATA0, V30/
DEMOD_TSSYNC, V29/DEMOD_TSVAL, U32/
DEMOD_TSCLK] of IC3303 (Digital AV decode & Main CPU)?
Refer to "The sound is not emitted from the Speaker & Woofer though the picture has come out."
No sound (during the reception of TV (DIGITAL) broadcasting)
(A)
YES
YES
YES
YES
YES
YES
YES
YES
NO Check the tuner and its peripheral circuits.
Replace as required.
NO Check the line between IC1102 and IC4402.
NO Check IC4402 and its peripheral circuits.
NO Check the line between IC4402 and IC3303.
NO Check the tuner and its peripheral circuits.
Replace as required.
NO Check the line between TU1104 and IC4402.
NO Check IC4402 and its peripheral circuits.
NO Check the line between IC4402 and IC3303.
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