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10. TROUBLE SHOOTING FLOW CHART
10. TROUBLE SHOOTING FLOW CHART
10.1. NO POWER
Start
12V on
C103/+
D111
short
Replace
it
Check
C108,C105,I102
Check
F801,D810,D811,
D812,D813,I801,
D804
N
Y
I101
Pin 1
>11V
N
Check
L101
N
Y
I101
Pin 2
Pulse
Y
N
Check
R108,I101
Check
Q101,Q102,
D101,D111,
C105
Y
Y
ViewSonic Corporation
24
Confidential
–
Do
Not
Copy
VA720-1
VE175/b
Summary of Contents for va720-1
Page 1: ......
Page 23: ...9 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation 19 Confidential Do Not Copy VA720 1 VE175 b...
Page 24: ...9 3 CON PCB TOP VIEW ViewSonic Corporation 20 Confidential Do Not Copy VA720 1 VE175 b...
Page 25: ...9 4 CON PCB BOTTOM VIEW ViewSonic Corporation 21 Confidential Do Not Copy VA720 1 VE175 b...
Page 26: ...9 5 POWER PCB TOP VIEW ViewSonic Corporation 22 Confidential Do Not Copy VA720 1 VE175 b...
Page 27: ...9 6 POWER PCB BOTTOM VIEW ViewSonic Corporation 23 Confidential Do Not Copy VA720 1 VE175 b...