Samsung PN51D490A1DXZA - Manual (Page 140)

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English
■ Self Diagnosis
O MENU m
→ Support → ENTER E
N Self Diagnosis might take few seconds, this is part of the normal operation of
the TV.
● Picture Test : Use to check for picture problems.
Yes : If the test pattern does not appear or there is noise in the test pattern,
select Yes. There may be a problem with the TV. Contact Samsung’s Call
Centre for assistance.
No : If the test pattern is properly displayed, select No. There may be a problem
with your external equipment. Please check your connections. If the problem
persists, refer to the external device’s user manual.