XOCECO LC-20Y15, Service Manual

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7
Blur picture Check if the antenna cable is correctly connected.
Of if it has received the right video signal.
No sound Check if the “mute” audio frequency setting is
selected.
Check if the sound volume is set to minimum.
Make sure the earphone is not connected.
Check if the cable connection is loose.
When playing VHS picture search
tape, there are lines at the top or
bottom of the picture.
When being played or in pause VHS picture search
tape sometimes can’t provide stable picture, which
may lead to incorrect display of the liquid crystal TV,
In this case please press “auto” key on the remote
control so as to enable the liquid crystal TV set to
recheck the signal and then to display correct picture
signal
Method of software upgrading
The Y# series models enable you to update software through the VGA interface.
Hardware requirements: 1. One parallel cable with male end and female end;
2. One standard VGA cable;
3. The updating board specially for Y# mainboard.
The steps for updating software:
1. Install Gprobe 5.0:
The first: Double click the GProbe5[1].0.0.15_S0006-EXE-09A to install it:
According to the prompt of Windows and follow the steps one by one to finish the installation.
The second: Double click the GPorbe5[1].0.0.15Update1_S0006-EXE-10A to install it:
According to the prompt of Windows and follow the steps one by one to finish the installation.
2. Copy the full directory of Isp_fastflash to anywhere
E.g. Take the root directory of C:\ as an example for the following explaination:
Copy the updating file *.hex to the directory of C:\ Isp_fastflash\
E.g. C:\ Isp_fastflash\20Y25.hex.
3. Open C:\ Isp_fastflash\Isp_parallel\ bat.txt as follows: