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7. When the product does not function properly
Check if the power has been turned on.
Check the voltage.
Check the connection.
If you cannot hear any
sound.
Check if volumn switch
If picture quality is bad
and it trembles.
If the picture is not clear, adjust
brightness and color.
Check if it is well connected.
If the picture trembles up and down
when dark pictures are replaced with
bright pictures, adjust contrast.
Checkpoint 1.
Checkpoint 1.
Checkpoint 2.
Checkpoint 3.
Checkpoint 1.
Checkpoint 2.
Checkpoint 3.
If the monitor is not
turned on
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