Samsung DVD-611/ 511 Manuel de service télécharger pdf (Page 72)

Troubleshooting

Samsung Electronics 6-7

MIC1-9 is fixed to 0V?

MIC7-4, 5 pin is fixed to 0V?

Check A/V decoder signal process block.

Check DVD signal process block.

Yes

MIC1-10, 19

waveform state (0, 1)

changes whenever pressing

front key?

Check MIC1 peripheral soldering.

Yes

Check eith article

"No Front (SET) Operation"

No front (SET) operation

REF +/-, 5V-all, -28V

power is supplied.

12MHz oscillation (FY1)?

If the problem persists ;

Check after replacing Jack PCB,

with another one.

Check other parts for abnormal

front operation persists.

Check power status.

Check X-TAL peripheral circuit.

Yes

Reset working in

FIC1-12?

Check reset peripheral circuit of FIC2.

Yes

FIC1 soldering is OK?

Check FIC1 soldering.

Yes

Key of STOP, PLAY, OPEN

work normally?

Check S/W interface.

Check communication status with

main micom

(Check FIC1 pins 27, 73, 74, 75, 95)

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 114 115

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Samsung DVD-611/ 511 Manuel de service Page 72