Sharp SX76NF8, Руководство по обслуживанию

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SX76NF8
8
TROUBLE SHOOTING TABLE
NO PICTURE
Does the snow noise appear on the CRT at max contrast and brightness control?
Does approx.30V appear at pin (9) of TU201(tuner)
Check L204, D606 and R618
Check TU201 and their peripheral parts.
Check pin(1) and (2) of IC201 Check pin(51) of IC 1001 Does noise or signal appear? Check IC1001 RGB output Normal? Check pin(1), (2) and (3) of IC850 Signal or Noise?
Check R616(Heater), Screen connection and Peripheral circuits of T602(FBT) and CRT
Check TU201(tuner), SF202 and Peripheral parts. Check IC201, Q201 and their Peripheral circuits. Check IC1001 and their Peripheral circuits.
Check "CJ" connection, IC850 and their Peripheral circuits
Snow noise increase
No Snow noise
(Noise or signal appear)
(Noise)
(Signal)