Samsung LTM1525 Especificações descarregar pdf (Página 25)

CONFIDENTIAL

5 Troubleshooting

5-4 LTM1525/LT15S13C

Does the signal appear at

Pin 67 (Tuner sound signal) and

Pin 47, 48 (PC sound) and Pin 56, 57

(VCR sound) and Pin 50, 51 (DVD)

of IC 919 (MSP3421)?

Check the CN401(PC Sound) and the

SK3(VCR Sound) and the SK2

(DVD/DTV Sound) the CN828(Tuner).

Yes

Does the signal appear at Pin 27,

28 of IC919 (MSP3421)?

Check the Pin 3 of IC919 and

related circuit of IC919.

Yes

Does the signal appear

at R505, R506?

Check the IC503 (Audio amp) and

related circuit of IC503.

Yes

Replace the speaker.

5-4 No Sound

WAVEFORMS

IC919 #3

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