Zebra Technologies R-140 - Manual (Page 36)

Printer Basics
Operator Controls
This section discusses the functions of the various controls and indicators
on the printer. The operator should become familiar with each of these
functions.
POWER Switch
This switch is located at the back of the printer above the power cord and
fuse. The POWER switch should be turned off before connecting or
disconnecting any cables.
External influences, such as lightning storms or noise on the power or data
cables, may cause erratic printer behavior. Turning the printer’s power off
and back on may re-establish proper printer operation.
Zebra R-140 User’s Guide 27