Epson FX-870 User Manual page 5

If you use an extension cord, make sure that the total of the
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ampere ratings on the products plugged into the extension cord
does not exceed the extension cord's ampere rating. Also, make
sure that the total of all products plugged into the wall outlet
does not exceed 15 amperes.
Never push objects of any kind into your printer because they
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may touch dangerous voltage points or short out parts that
could result in a risk of fire or electric shock.
Except as specifically explained in the user's manual, do not
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attempt to repair the printer yourself. This could expose you to
dangerous voltage points or other risks. Refer all servicing in
those compartments to service personnel.
Unplug the printer from the wall outlet and have it repaired by a
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qualified service person under the following conditions:
When the power cord or plug is damaged or frayed
If liquid has been spilled into it
If it has been exposed to rain or water
If it does not operate normally when the operating
instructions are followed. Adjust only those controls that are
covered by the operating instructions since improper
adjustment of other controls may result in damage and will
often require extensive work by a qualified technician to
restore the printer to normal operation.
If it has been dropped or the cabinet has been damaged
If it exhibits a distinct change in performance, indicating a
need for service.