Samsung 203B Service Manual - Page 36
No Video PC Digital Signal
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UPC - 729507703824
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4-3 No Video (PC Digital Signal) 4 Troubleshooting 1 Is Pin9 of CN501(BKLT_EN)high(3.3V)? Yes Does the Digital video 11 signal appear at R129~R136? Yes Does the proper clock pules 10 appear at Pin6,7 of the CN201? Yes Replace LCD Panel. No Check TFT_LCD panel or inverter and connection between then. No Check PC signal. No Check IC301 and 302. 4-5
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4 Troubleshooting
4-5
Is Pin9 of
CN501(BKLT_EN)high(3.3V)?
4-3 No Video (PC Digital Signal)
1
Check TFT_LCD panel or inverter
and connection between then.
Yes
No
Does the Digital video
signal appear at
R129~R136?
Check PC signal.
Yes
No
Does the proper clock pules
appear at Pin6,7
of the CN201?
Check IC301 and 302.
No
10
11
Replace LCD Panel.
Yes