Service manual

ViewSonic Corporation Confidential - Do Not Copy VA702-1_VA702b-1
41
8. Bad Screen
Bad Screen
Workmanship
LVDS Cable NG
1.Check
X101,C154,C155
2.Check
X102,C126,C168
Check ALE/RDZ/
WRZ/AD0/AD1/AD2/
AD3/HWRESET
Check the pins of
U104 and U105
LVDS Cable Reinsert
Change LVDS Cable
Check Crystal:pin20,21 of
U105 and pin 33,34 of U104
Check the communication of
U104 and U105
OK
NG
OK
NG
NG
OK
NG
OK