XOCECO LC20H3D, Service Manual

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separately and check if the picture and sound is normal.
8.Preset ex-works
In the status of TV enter the factory menu by pushing the factory key and then perform presetting.
9.Ex-works packing
Check accessories and then pack them in box.
Trouble shooting
Before servicing please check to find the possible causes of the troubles according to the table below.
1.Antenna:
Picture is out of focus or jumping Bad status in signal receiving
Maybe broadcast signal itself is not good
Check if the outdoor antenna is disconnected.
Check if the antenna is correctly oriented.
Fringe in picture Check if the antenna is correctly oriented.
Maybe there is electric wave reflected from hilltop or building.
Picture is interfered by stripe
shaped bright spots
Possibly due to interference from automobile, train, high voltage
transmission line, neon lamp etc.
Maybe there is interference between antenna and power supply
line. Please try to separate them in a longer distance.
There appear streaks or light color
on the screen
Check if interfered by other equipment and if interfered possibly
by the equipment like transmitting antenna, non professional radio
station and cellular phone.