Trouble Shooting; No Power - NEC Multi Sync EA221WM Service Manual

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2. TROUBLE SHOOTING

2.1 No Power

Check the AC power.
The power on/off switch
is turned on.
Loosening of the power supply
connector is checked.
Check connections of
POWER PWB or MAIN PWB.
Replace the POWER PWB.
Replace the MAIN PWB.
No Power
OK
NG
OK
OK
NG
NG
End
NG
The power supply equipment is
confirmed.
OK
NG
Replace AC power cable or AC inlet.
NG
The cable connector is inserted.
OK
2-1

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