Sharp LC-40LE812E Service Manual page 31

LC-40/46LE812E, LC-40/46LX812E, LC-40/46/52LE822E, LC-40/46LU822E (1st Edition)
Does not the sound go out though the picture has come out when DTV is received?
Is signal input to TU1301?
Is signal sent to pins (2, 3/CS_TS_CK, 5, 6/CS_TS_SY, 10, 11/
CS_TS_VA, 14/CS_TS_D7) of IC4409 (TS SW)?
Is pins (2) of IC4409 at L?
Is signal sent to pins (4/CS_TS_SCK, 7/CS_TS_SSY, 9/
CS_TS_SVA, 12/CS_TS_SDATA) of IC4409?
Is signal sent to pins (11/T0_DATA1, 12/T0_DATA2, 13/
T0_DATA3, 14/T0_DATA4) of IC4405?
Is signal output to pins (122/TS_VALIDO, 123/TS_CLKO, 124/
TS_DATAO, 124/TS_SYNCO) of IC4405?
Is signal sent to pins (A30/TS_CPUIN_VAL, B30/
TS_CPUIN_CLK, C30/TS_CPUIN_SYNC, C29/TS_CPUIN_D0)
of IC3302 (Digital AV decode & Main CPU)?
Refer to "No sound output in all modes".
Does not the picture come out when DTV (Satellite) is received?
Refer to "No sound (during the reception of TV(DIGITAL-Satellite) broadcasting)".
No sound (during the reception of TV (DIGITAL-Satellite) broadcasting)
YES
YES
YES
YES
YES
YES
YES
No picture on the display (4)
NO Check the setting of an external input device that connects with
TU1301.
NO Check the line between TU1301 and IC4409.
Check TU1301 and its peripheral circuits (IC1301 etc. ⋅⋅⋅).
Replace as required.
NO Check the line between IC4409 and 21pins of IC4405.
NO Check IC4409 and its peripheral circuits.
NO Check the line between IC4409 and IC4405.
NO Check IC4405 and its peripheral circuits.
NO Check the line between IC4405 and IC3302.
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