Zebra Technologies S400 - Manual (Page 30)

22 Zebra S400 & S600 User’s Guide
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This switch is located on the left side of the printer near the AC power cord
and fuse (see Figure 6 on page 8). The AC power switch should be turned
off before connecting or disconnecting any cables.
Turning the switch on activates the printer and causes it to perform a
Power-On Self Test, which can take up to 30 seconds, as it begins
operation. Turning the printer power on while holding down certain front
panel keys activates additional printer self tests following the Power-On
Self Test. See page 56.
External influences, such as lightning storms or unwanted noise on the
power or data cables, may cause erratic printer behavior. Turning the AC
power off and then back on may re-establish proper printer operation.
Otherwise, see “Troubleshooting” beginning on page 45.
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Before you connect the printer to your computer, make sure that the printer
is in proper working order. You can do this by printing a configuration
label (see “CANCEL Key Self Test” on page 57.) If you can’t get this
label to print, refer to “Troubleshooting” beginning on page 45.
To make print quality adjustments, see “Print Quality Adjustments”
beginning on page 38.