Sansui HDLCD1909 Manual de Serviço descarregar pdf (Página 22)

TROUBLESHOOTING GUIDE

THE PICTURE DOES NOT

APPEAR

Does backlight shine?

Is CD2801 connected?

Connect CD2801

Is CP7001 and

CP7002 connected?

Connect CP7001 and

CP7002.

Yes

No No

Yes

Is the voltage at pins

13, 15 of IC7001 8.3V?

Yes

Check IC7001 and

peripheral circuit.

E-3

Is there signal at pins 7,

9, 10, 12, 13, 22, 23, 25,

26 and 28 of CP2804?

Change V2801(PANEL).

Change DIGITAL PCB.

Yes

Check Q3008 and peripheral

circuit.

Is there voltage at pins

1, 2, 3, 16 and 17 of

CP2804 5V?

E-3

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 36 37

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Sansui HDLCD1909 Manual de Serviço Página 22