Service manual

4 Troubleshooting
4-2 GH15DS
4-2 Video
Power indicator is green?
Check IC301.
Check X301.
Yes
Yes
No
No
Yes
Do the input signals
appear at D201~D208?
No
Do the input signals appear at
pin 30, 31, 32 of IC401?
1 2
3 4 5
Check Pin 68 of IC301 and IC102.
Yes
Do the output signals appear
at pin 40 of IC401?
No
Check IC401.
Replace LCD panel.
6