Sharp lc-32rd8, Руководство по обслуживанию

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LC-32RD8E/S/RU-BK/GY (1st Edition)
4 – 11
YES
Are the gradation signals (VH/VL_247, 191, 159, 63, 31, 0)
normally sent from IC7102 (GLAY_LEVEL_GENERATION) to
SC7101/SC7102? NO Check IC7003 and that the communication between its peripheral
circuits and IC7102 is normal. (Each line of DAC_CLK/DATA/
LATCH)
YES
Check the connectors SC7101/SC7102 and LCD panel.
No picture on the display (2)
Does not the picture come out when VHF/UHF is received?
Is the video signal(VIN1) output from pin (6) of
TUNER(TU201)?
NO
Whether the communication control is executed pin (8,9) of TU201
and between pins (20,21) of IC207 is checked.
YES
Is the video signal(VIN1) sent to pins (191) of IC3001
(MAIN_MICON)?
NO
Check the line between TU201 and IC3001.
YES
Refer to “The picture doesn't appear in all modes.”
No picture on the display (3)
Does not the picture come out when DTV is received?
Is the voltage of regulation for a TUNER circuit and the power
supply terminal of IC207(COFDM) supplied?
(Refer to the circuit diagram) NO
Each power supply circuit is checked.
(IC204, IC205, etc.)
YES
Is IF signal output from pins(16),(17) of TUNER(TU201) to
pins(10),(11) of IC207(COFDM)?
NO
Check the tuner, IC207 and their peripheral circuits.
Replace as required.
YES
Similarly, is communication control carried out between pins
(8, 9) of TU201, and pins (7, 6) of IC4001
(SET_TOP_BOX_DECODER)? NO Check the line between TU201 and IC4001.
(IC203(BUS_SW.), etc.)
YES
Does X201(27MHz) oscillate?
NO
Check X201 and its peripheral circuits.
YES