Change Panel
Still having
problem
s
No picture but h
ave sound
Check if there is +12V at
Pin35 in CN204
No
Replace
the
Q101
Yes
Yes
No
Check if U3 and U4 Pin20
˄
3.3V
˅ǃ
Pin11
˄
5V
˅ǃ
Pin19
˄
5V
˅
;U5
˖
Pin2(0.72V)
ǃ
Pin3
˄
5V
˅ǃ
Pin4(12V)
ǃ
Pin6(5.7V) is normal
Change LVDS
wire
No
Replace U3 or
U5 U4
Check if Q103
ǃ
ǃ
D10
ǃ
D9
ǃ
is working
Yes
Replace
Q103
ǃ
ǃ
D10
ǃ
D9
No
Service Manual
Model No.:
9-2. M
a
in bo
a
rd f
a
ilure
c
he
c
k
- 39 -
Check if there is
at C931
+30V