No Power
Check power cable is
Check Power "On/Off"
Replace the power board
Replace main board and check connections
Replace key board and check connections
No power
tightened?
OK
is "On"?
OK
Check the LED
indicates is OK?
OK
NG
NG
NG
Re-plug the power cable
NG
Turn on the Power "On/Off" switch
NG
Check the AC power
er
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