ViewSonic VE910B Service Manual page 39

6.3. NO DISPLAY
6.4. LOSE COLOR
ViewSonic Corporation
Power key
Check
N
Work ok
Keypad
Y
Check
Check
N
H V sync
I101
Y
Check R.G.B Check
N
DATA
I/O cable
Y
Check
Check
N
C126,C127
X101
Y
Check
Check I101
N
HS,VS
SCL,SDA
HWRESET
Y
Check
N
Check
Q102
BACKLITE
Some bits
lost
Y
I108 or
N
Check
R-pack
Pin102~128
soldering
N
I106 poor I107 poor
soldering soldering
P105 poor
soldering
N N
Check
5VMCU
Check
N N
P101
Check
N
N
I101
Check
N
N
VCC2.5V,3.3v
I101,I102
Check
N
N
SCL,SDA SCL,SDA
I102,
Check
N
Check
N
P102 WIRE
PANEL
Lose color
R or G or B
Y
Check
N
P102
Pin 8,10,12
Y
Check
N
L101,102,103
R112,115,119
Y
I108
fail or
Poor soldering
Confidential - Do Not Copy
36
Check
I102
Check
I/O cable
Check
P102
Check
Check
I105,
Check
Sign Cable
Check
C115,118,122
C117,121,124
VE910/b