Service manual

7. White Screen
W hite Screen
W orkmanshipLVDS Cable Reinsert
Change LVDS Cable
Check VLCD is 3.3V?
Check Panel-Enable of
U103(pin48) is low?
LVDS Cable NG
U103 Fail
U103 Fail
END
OK
NG
OK
NG
OK
OK
NG
OK
NG
NG
Check LVDS signals P ane l Fail
Check Q101, Q105, Q106,
R113, R114, C115, C116,
C117
Check Vcc3.3V ?
Power Fail
OK
OK
NG
44
ViewSonic Corporation Confidential - Do Not Copy VA503b-2_VA503m-2