-
3
4
-
A.
Measure the voltages of VGH,VGE,VCC,VDD,VIN and VSS to see if they are
correct.
B.
Check VC1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
C.
Check the devices surrounding
U
1 and
U201
to see if there is any cold or
hollow
soldering and reverse soldering of IC or parts missing.
D.
Check
Y1,Y2
to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
E.
If the above actions are not working, replace the Driver Board.
T73
TFT image shakes or is distorted
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 VC1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
C.
Check the devices surrounding
U1
and
U201
to see if there is any cold or
hollow
soldering and reverse soldering of IC or parts missing.
D.
Check
Y1,Y2
to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
E.
If the above actions are not working, replace the Driver Board.
T74
TFT PAL color strip
Driver Board
A.
Measure the voltages of VGH,VGE,VCC,VDD,VIN and VSS to see if they are
correct.
B.
Check VC1 to see if there is any cold or hollow soldering and reverse soldering
of IC or parts missing.
C.
Check the devices surrounding U1 and U201 to see if there is any cold or hollow
soldering and reverse soldering of IC or parts missing.
D.
Check
Y1,Y2
to see if there is any cold or hollow soldering and reverse
soldering
Summary of Contents for DPC-7900 Series
Page 1: ...Portable DVD NOV 2006 DPC 7900 Series OSDPC79001...
Page 17: ...14 4 3 Exploded View 4 3 1 DVD Door Mainbody_top module...
Page 18: ...15 4 3 Exploded View 4 3 2 Keyboard Mainbody_top module...
Page 19: ...16 4 3 Exploded View 4 3 3 Mecha Mainbody_bottom module...
Page 20: ...17 4 3 Exploded View 4 3 4 Mainbody module...
Page 21: ...18 4 3 Exploded View 4 3 5 Display module Mainbody module...
Page 22: ...19 5 Regulatory Standards 5 1 Safety UL FDA 5 2 EMI CE FCC 5 3 Ergonomics Dolby LVD...
