Sanyo FVM3982 Service Manual page 9

Repair Flow Chart:Trouble Condition
Power LED turns OFF within 10 sec of power ON.
Power LED turns OFF within
10 sec of power ON.
On analog board:
Is 3.3V supplied to"K17 Pin1"during
LED ON time?
See TABLE *1.0
Ｙｅｓ：３．３Ｖ
Unplug cable from digital board
to T.Cnt.board is symptom
changed?
Ｎｏ
On power board:
Is the 12V supplied from "CN2 Pin8/9 "
during LED ON time?
See TABLE *3.0
Digital board is not working.
Analog board may also not be working.
Replace "digital board and analog board".
Ｎｏ：０Ｖ
On digital board:
Is 3.3V supllied to "K5A Pin29"?
See TABLE *2.0
Ｙｅｓ：３．３Ｖ
Analog board is not working.
Replace "analog board".
Ｙｅｓ
T Con board is not working.
Digital board may also not be working.
Replace "T Con board&digital board".
Ｎｏ：０Ｖ
Power board is not working.
Replace "Power board."
Ｎｏ：０Ｖ
Digital board is not working.
Replace "digital board".
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