第
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12
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HOW TO UPDATE THE SOFTWARE
The software of LCDTV stored in a 8M bit FLASH memory IC
,
so it can be updated when
needed
。
Sometimes we have to update the software of LCDTV to solve some problems and only
the authorized people can do the updating job
。
When updating the software, we need following instruments
,
A computer running windows NT /windows 2000/windows xp
,
a debug board
,
a serial cord
with D-sub 9 pin terminals in both sides(NOT SUPPLIED)
。
Following these steps:
1
.
Power off the LCDTV, pull down the power cord.
2
.
Remove the stand and back-cover, dismount the steel shield-cover
3.Connect the computer—serial cord—debug board—LCDTV(connector XP109 in main
board)
4.Running the update program (tool) in computer to load the new software
5.Plug in the power cord of LCDTV, the software will be automatically wrote into
the FLASH IC after 3 minutes
Cautions:The updating work will erase all the parameter such as white balance value、
vco value etc.。So before you update the software, you must enter the factory mode
and to write down the vco values and white balance values。When you finish the
updating work, you must restore those values to right position。
If not, the LCDTV will not memory channel and the picture will be bad and not in
right colour。
MAIN PARTS LIST
1.
TUNER BOARD—E/RSAG7.820.263A-2
2.
MAIN BOARD---E/RSAG7.820.234A-1
3.
TELETEXT BOARD—E/RSAG7.820.264A
4.
SCART BOARD—E/RSAG7.820.265A-1
5.
KEY AND REMOTE CONTROL BOARD—E/RSAG7.820.236A-1
6.
HEAD PHONE BOARD—E/RSAG7.820.237A
Trouble shootings
1.
Sometimes the TV can not memory the channels when doing the automatic searching. One
reason of this problem is that the VCO value is incorrect. So the following steps will guide
you to calibrate the VCO value.
(a)
Connect a signal cable to the tuner, switch on the TV, change source to TV mode, if you
can see a program, then you can directly jump to step.e. If not, go to step.b
(b)
Entering the factory mode(use the user remote control, sequent pressing “MUTE” “2”