Read Sony DVP-FX720 Service Manual online
9-6E
Display condition
VCC5V normal
PNL_DVDD normal
VGH normal
VGL normal
Y1 operate
Video_Y, Video_C
Is M1, U3 OK?
Is U1 OK?
SDA, SCL signal
R, G, B signal output
TFT LCD normal
Check CN2
Check M2
Check BD2, BD3
Check BD4, BD5, BD6
Replace Y1
Check R19, R21, C25, R14, R17, R18, FB1, C24
Replace M1, U3
Replace U1
Check R24, R26, R31, R33
Check R8, R7, R5
Replace
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
VCCDC normal
Check CN2
YES
NO
NO
9-2. LCD TROUBLE SHOOTING GUIDE
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