Sharp LC-37SD1E, Руководство по обслуживанию

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DTV troubleshooting
The unit does not enter the DTV mode. Or, the DTV menu does
not appear. YES Go to “The unit does not enter the DTV mode. Or, the DTV menu
does not appear.”
NO
No video output during DTV reception. YES Go to “No video output during DTV reception.”
NO
No audio output during DTV reception. YES Go to “No audio output during DTV reception.”
The unit does not enter the DTV mode. Or, the DTV menu does not appear.
Digital UNIT:
Is a voltage supplied from IC4701(3.3V-REG)/IC4704(1.8V-
REG)? NO Check peripheral circuits of IC4701/IC4704 and pin(7) of IC4701.
YES
Do X4001/X4002 oscillate? NO Check peripheral circuits of X4001/X4002.
YES
D-TUNER UNIT:
Is a voltage of 5V supplied from IC205(SW) and IC206(SW)? NO Check peripheral circuits of IC205/IC206.
YES
Is a voltage applied to pin(20) (I2CSEL) of P202?
(High=3.3V) NO MAIN UNIT:
Check around the pin (12) of IC1710(FPGA).
YES
Is CLK/DATA signal sent to pins (21) and (22) of P202 and pins
(1) and (13) of IC204 (COFDM). NO Check peripheral circuits of IC202(COFDM)/ IC4001(D-Proces-
sor).
YES
Does X202 oscillate? NO Check peripheral circuits of X202.
YES
Check IC202(COFDM)/IC4001(D-Processor).