Sharp 29A-SX1 - Page 26

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29A-SX1
29A-SX5
29A-SX8
TROUBLE SHOOTING TABLE (Continued)
Normal
No snow noise.
Check pin (19) of TU200.
Abnormal
C
Noise or signal appear. Is AV1, AV2, AV3 or DVD input normal?
Check Q200, Q201, Q203 and their peripheral circuit.
Check TU200(TUNER) and its related parts.
Yes
No
Check pin (36) of IC401 noise or signal appear?
Check IC401 its peripheral circuit.
No
Yes
Check pin (15) of IC801 noise or signal appear?
Check IC400, Q404, Q410, Q412 and their peripheral circuit.
Check IC801 RGB out Normal?
Check IC900, IC800, IC802, IC803 and their peripheral circuit.
Check the peripheral circuits of screen heater (FBT) and the CRT.
Check IC3801, IC3802, IC3803 and their peripheral circuit.
Yes
Are pin (8) of IC3801, pin (8) of IC3802 and pin (8) of IC3803.
Yes
No
No Yes No