Samsung LW22A13W Specifications download pdf (Page 22)

5 Troubleshooting

LW22A13W 5-7

CONFIDENTIAL

5-4 No Picture (Tuner_CVBS)

Does the signal appear at R2?

Check the DC voltage. (#4 of tuner) : 10V~33V

Change a input board assy. (BN59-00339A)

Power indicator is off,

Lamp on, No picture.

Yes

Connect the RF cable and

check RF signal.

Does the signal appear at

C042(#1) of input?

Change FPC cable. (CN101)

Change a input board assy. (BN59-00339A)

Yes

Does the clock pulse appear at

3230Y, C_OUT(0:7) of IC010?

IC010 is bad.

Change main board assy. (BN94-00400A)

Yes

Does the clock pules appear at

output of IC002~IC005?

IC001 or ICP18 are bad.

Change main board assy. (BN94-00400A)

Yes

Does the signal appear at CR01,

CG01, CB01 of R, G, B output?

IC200 is bad.

Change main board assy. (BN94-00400A)

Yes

Does the clock appear at

output of RA311~RA313?

IC300 or IC901 are bad.

Change main board assy. (BN94-00400A)

Yes

Check a LVDS cable.

Replace a assy LCD panel.

(BN91-00388L)

Please, call to Samsung Co, LTD.

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Samsung LW22A13W Specifications Page 22