Samsung 305T Service Manual - Page 54
No Video DIGITAL
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UPC - 729507700151
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4 Troubleshooting 4-3 No Video (DIGITAL) Check signal cable connection and power. 1 X200 oscillate properly? Yes Is there input data at 8 9 R122, R124, R127, R128, R129 and R130? Yes Is there wave from 3 4 Does the output signal appear at Pin 2, 3 of CN401? Yes Is there wave form 7 at pin 13 of CN401? Yes Replace LCD Panel. No Replace or check related circuit. No Check input part. No Check LCD Panel and related circuit. No Check the LCD_ON at pin 33 of IC200 4-4
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4 Troubleshooting
4-4
X200 oscillate properly?
4-3 No Video (DIGITAL)
1
Replace or check related circuit.
Check signal cable connection and
power.
Yes
No
Is there input data at
R122, R124, R127, R128,
R129 and R130?
Check input part.
Yes
No
Is there wave from
Does the output signal appear
at Pin 2, 3 of CN401?
Check LCD Panel and related circuit.
No
Yes
Is there wave form
at pin 13 of CN401?
Check the LCD_ON at pin 33 of
IC200
No
Yes
Replace LCD Panel.
9
8
4
3
7