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RW 420 User Guide
Preventive Maintenance
Extending Battery Life
• Avoid exposing the battery to direct sunlight or tempera-
tures over 104° F (40° C).
• Always use a Zebra charger designed specifically for
Lithium-Ion batteries. Use of any other kind of charger
may damage the battery.
• Use the correct media for your printing requirements. An
authorized Zebra re-seller can help you determine the
optimum media for your application.
• If you print the same text or graphic on every label, con-
sider using a preprinted label.
• Choose the correct print darkness, and print speed for
your media.
• Use software handshaking (XON/XOFF) whenever pos-
sible.
• If your printer has the optional LCD display, use the dis-
play backlight only when necessary. Turn it off whenever
it is not needed.
• Remove the battery from the printer if it won’t be used for
a day or more and you’re not performing a maintenance
charge.
• Consider purchasing an extra battery.
• Remember that any rechargeable battery will lose its
ability to maintain a charge over time. It can only be
recharged a finite number of times before it must be
replaced. Always dispose of used batteries properly.
Refer to Appendix D for more information on proper bat-
tery disposal.
• Don’t print while the LI 72 Wall Charger is plugged into
the unit. Unreliable battery charging can result.
Cleaning Instructions
CAUTION- Use only cleaning agents specified. Zebra
Technologies Corporation will not be responsible for damage
caused by any other cleaning materials used on this printer.
Clean the printer with either the cleaning pen supplied with the
printer or a cotton swab saturated with alcohol.
WARNING: To avoid possible personal injury or damage
to the printer, never insert any pointed or sharp objects into the
printer. The Tear Bar has sharp edges. Use care when cleaning
the Tear Bar or the Printhead to avoid possible personal injury.