Epson LQ-1150 User Manual page 16

Keep the entire computer system away from potential sources
of electromagnetic interference, such as loudspeakers or the
base units of cordless telephones.
Use a grounded power outlet; do not use an adapter plug.
If you plan to use a printer stand, follow these guidelines:
Use a stand that supports at least 20 kg (44 lb).
Never use a stand that tilts the printer. The printer should
always be kept level.
Position your printer's power cord and interface cable so they
do not interfere with paper feeding. If possible, secure the
cables to a leg of the printer stand.
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Setting Up the Printer