Daewoo DPC-7900 Series, Руководство по обслуживанию

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Main Board
A.
Check U17 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
B. If the above actions do not work after the inspection, it means the main board or
F/W is bad.
C.
If the disk is abnormal, ask for a new version software
.
T62 System can’t play or system down after setting
Main Board
A.
Check U17 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
B. If the above actions do not work after the inspection, it means the main board or
F/W is bad. Replace the main board or re-burn the F/W (U
11 ).
T71 TFT image and color error
Main Board
A.
Check the 1
1
-pin cable connected to the driver board to see if there is any
problem of plugging. Rule out the problem.
B. Check devices after Y/C signal to see if there is any cold or hollow soldering
and reverse soldering of IC or parts missing.
C. Check U
17
to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. If the above actions are not working, replace the Main Board.
Driver Board
A.
Measure the voltages of
VGH,VGE,VCC,VDD,VIN
and
VSS
to
see if they are
correct.
B. Check V
C1
to see if there is any cold or hollow soldering and reverse
soldering
of IC or parts missing.
C. Check Y1,Y2 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. If the above actions are not working, replace the Driver Board.
T72 TFT image is black and white
Main Board
A.
Check the 1 1 -pin cable connected to the driver board to see if there is any
problem of plugging. Rule out the problem.
B. Check devices after Y/C signal to see if there is any cold or hollow soldering
and reverse soldering of IC or parts missing.
C. Check U
17
to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
D. If the above actions are not working, replace the Main Board.
Driver Board