Epson EPL-N2000 用户手册

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If you use an extension cord with the printer, make sure 
the total ampere rating of the devices plugged into the 
extension cord does not exceed the cord's ampere rating. 
Also, make sure the total of all devices plugged into the wall 
outlet does not exceed 15 amperes.

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Except as specifically explained in this User's Guide

, do not 

attempt to service the printer yourself.

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Unplug the printer and refer servicing to qualified service 
personnel under the following conditions: 

If the power cord or plug is damaged; if liquid has entered 
the printer; if the printer has been dropped or the cabinet 
damaged; if the printer does not operate normally or exhibits 
a distinct change in performance. Adjust only those controls 
that are covered by the operating instructions.

This printer is certified as a Class 1 laser product under the U.S. 
Department of Health and Human Services (DHHS) Radiation 
Performance Standard according to the Radiation Control for 
Health and Safety Act of 1968. This means that the printer does 
not produce hazardous laser radiation.

Since radiation emitted by the laser is completely confined 
within protective housings and external covers, the laser beam 
cannot escape from the machine during any phase of user 
operation.