Samsung 330TFT Service Manual download pdf (Page 18)

4 Troubleshooting

SyncMaster 570BTFT/580BTFT 4-5

4-6 No Sound

Check IC803, IC804, VR841 and

related circuit.

Check Pins 1 and 2 of CN806 and

related circuits.

Does the DC 5 V appear at Pin

4 of IC803, Pin 5 of CN806?

Does the sound input signal

appear at Pins 6 and 11 of IC803?

Yes

No

Yes

No

Check IC803 and related circuits.

Do the sound signals appear at

Pins 3 and 14 of IC803?

Yes

No

Check C815, CN813, R821, R822,

ZD803 on the Audio PCB.

Check CN814, CN815 outputs.

Does the DC 2.5 V bias appear at

Pin 16 of IC503?

Yes

No

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 59 60

Comments to this Manuals

No comments