Lexmark P 450 User Manual page 49

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Press .
1
Press to turn the printer off.
2
Disconnect the power supply cord from the wall outlet.
3
Gently remove the power supply from the printer.
4
Push firmly to reconnect the power supply to the printer.
5
Reinsert the power supply cord into the wall outlet.
6
Press .
Contact Lexmark Customer Support.
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