- Make sure that the plug is tightly in the outlet.
 - Avoid multi-wiring.
 - Make sure that you ground the machine.
 
Input voltage level  | 120 V to 127 V, 60 Hz: Less than 11 A (for North America) 110 V, 60 Hz: Less than 12 A (for Taiwan)  | 
Permitted voltage fluctuation: 10%  | |
Do not set anything on the power cord.  | |