Samsung UA40B7000WM Service Manual page 74

4. Troubleshooting
4-5-2 Self Diagnostic
This is simple test function that judge whether is TV SET's problem or not.
There are two self-test. Picture and Sound.
1. Press "Menu -> Support -> Self Diagnosis"
The message "Picture Test / Sound Test" is displayed.
2. Picture Test
1) The message "Does the problem still exist with this
test pattern?" is displayed.
2) Press "Yes". This is a TV SET problem.
The massage "Contact Samsung's call center at
1-800-SAMSUNG for assistance." is displayed.
3) Press "No".
This is not a TV SET problem.
The message "If the self diagnosis picture is OK, picture
distortion may caused by your external device.
Please check connection. If the problem still persists,
refer to the external device's user manual." is displayed.
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