6. Trouble Shooting Flow Chart
START
CHECK
MAIN BOARD
5V OK ?
3.3V
OK?
1.8V
OK?
2.5V
OK?
CHECK POWER
BOARD OK?
CHECK I102,
SUROUND CAP
BEAD OK?
CHECK I101
SUROUND CAP
BEAD OK ?
CHECK I105,
SUROUND CAP
BEAD OK ?
CHECK P101 AND
ROUND CAP OK?
CHECK I102 3.3V
UROUND CAP
OK ?
CHECK I101 1.8V
UROUND CAP
OK ?
CHECK I105 2.5V
UROUND CAP
OK ?
N
N
N
N
Y
Y
Y
ViewSonic Corporation Confidential – Do Not Copy VP720-1_VP720b-1
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Summary of Contents for VP720-1
Page 75: ...ViewSonic Corporation Confidential Do Not Copy VP720 1_VP720b 1 72 ...
Page 88: ...11 2 MAIN PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VP720 1_VP720b 1 85 ...
Page 90: ...11 5 POWER PCB TOP VIEW ViewSonic Corporation Confidential Do Not Copy VP720 1_VP720b 1 87 ...
Page 91: ...11 6 POWER PCB BOTTOM VIEW ViewSonic Corporation Confidential Do Not Copy VP720 1_VP720b 1 88 ...