3-4
DESPLAY CONDITION?
INVERTOR ABNORMAL
appear shadow form interference
in black background
There is only bright light.(LCD B/D abnormal)
FUSE Replace
IC8F1, IC8F2 Check and Replace
T801, D8F1, D8F2, D8F3 Check
Main B/D on located
IC8F3 Check and Replace
A/V IN S/W Check
X801, C832 Replace
IC801, IC803 Check and Replace
IC805 Check and Replace
D801, L819, IC804 VCO Check and Replace
Q810 Check and Replace
FUSE(F801)Normal?
Q8F1 Normal operate?
7.5V, 15V, -10V Normal?
+5V Normal?
Y/C Display signal?
X801 operate?
R.G.B signal output?
VCOM signal?(6.5Vpp)
VCO Normal operate?
H/V SYNC?
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
LCD TROUBLE SHOOTING GUIDE(1/2)
Summary of Contents for DVP7772
Page 28: ...3 7 3 8 LCD CIRCUIT DIAGRAM LCD1 CIRCUIT DIAGRAM ...
Page 29: ...3 9 3 10 LCD2 CIRCUIT DIAGRAM ...
Page 30: ...3 11 3 12 LCD3 CIRCUIT DIAGRAM SR14121A ...
Page 32: ...3 14 3 15 LCD P C BOARD LOCATION GUIDE LOCATION GUIDE ...
Page 33: ......
Page 50: ...3 60 3 61 PRINTED CIRCUIT DIAGRAMS 1 MAIN P C BOARD LOCATION GUIDE LOCATION GUIDE ...
Page 51: ...2 KEY P C BOARD LOCATION GUIDE LOCATION GUIDE 3 62 3 63 ...
