LCD TV SERVICE MANUAL - Goldhand
LCD TV SERVICE MANUAL - Goldhand
LCD TV SERVICE MANUAL - Goldhand
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3. Unusual display from <strong>TV</strong>/CA<strong>TV</strong> mode<br />
Is video<br />
output of the Tuner<br />
normal?(CheckTU500<br />
_Pin15)<br />
Yes<br />
Is the LVDS cable<br />
connected well?<br />
Yes<br />
Change the IC(IC100).<br />
No<br />
No<br />
Copyright © 2008 LG Electronics. Inc. All right reserved.<br />
Only for training and service purposes<br />
Is the input<br />
voltage normal?(Check<br />
TU500_Pin4)<br />
No<br />
Check the Power.<br />
Cable inserts well.<br />
BLOCK A<br />
4. Unusual display from D<strong>TV</strong> mode<br />
Is video<br />
output of the tuner<br />
normal?(Check TU500_<br />
pin24~pin34)<br />
Yes<br />
Same as Block A.<br />
No<br />
Is the input<br />
voltage normal?(Check<br />
Pin21,22)<br />
No<br />
Check the Power.<br />
- 16 -<br />
Yes<br />
Yes<br />
Is the<br />
I2C communication<br />
Normal?(Check Pin10,<br />
Pin11)<br />
No<br />
Check the Tuner.<br />
Is the I2C<br />
communication Normal?<br />
(Check Pin18,<br />
Pin19)<br />
No<br />
Check the Tuner.<br />
Yes<br />
Yes<br />
Replace Main board.<br />
Replace Main board.<br />
LGE Internal Use Only
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