Sharp LC-32D65E Service Manual page 47

<LC-32D65E/RU, LC-37D65E/RU>
Does not the picture come out when DTV is received?
Is the prescriptive voltage supplied a power supply terminal of a
TUNER circuit and IC7508 (COFDM - DEMOD)?
(Refer to a circuit diagram.)
Is IF signal sent from pins(16, 17) of TUNER(TU7501) to pins(40,
39) of IC7508(COFDM-DEMOD.)?
Check whether I2C signal normally communicates between
TU7501 and IC7508 (COFDM - DEMOD.)
Does X7501(20.25MHz) oscillate?
Is TS data (FECLK, FESTR_PSYNC, FED_D, FEVAL_DEN)
being output from IC7508 to IC8101(DIGITAL AV DECODER &
MAIN CPU & VIDEO PROCESSER)?
Is TS data (FECLK, FESTR_PSYNC, FED_D, FEVAL_DEN)
input to IC8101(DIGITAL AV DECODER & MAIN CPU & VIDEO
PROCESSER)?
Refer to "The picture doesn't appear in all modes."
No picture on the display (3)
YES
YES
YES
YES
YES
YES
NO Each power supply circuit is checked.
(IC7502, IC9607, IC9604, etc.)
NO Check the tuner, IC7508 and their peripheral circuits.
Replace as required.
NO
NO Check X7501 and its peripheral circuits.
NO Check whether a control signal is normal between IC7508 and
IC9101(CPLD). (FE_RST, N_TUNER_INT, FERR_UNCOR,
AGCSEL)
NO Check the line between IC7508 and IC8101.
(IC7503, etc.)
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LC-32D65E/RU, LC-37D65E/RU