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6.
TROUBLE SHOOTING FLOW CHART
6.1. NO
POWER
Check AC TO DC
PCB
F801,D810~D813
N
Y
Start
Check 12V
on C170/+
Replace
AC TO DC PCB
N
Y
Check 5V
on C173/+
Check
12V to 5V CKT
N
Y
Check
3.3V/1.8V
Check
3.3V/1.8V to GND
N
Y
Check
pin 8 of I108
+5V_MCU
Check
Q107,Q108
R210~R212
N
Replace
Main Board
N
!
!
ViewSonic Corporation
15
Confidential
– Do Not Copy
VE175/b-2