OSI Security Devices OMNILOCK OM100 Series User Manual page 134

The WP4000 Printer
If you are not planning to use the Printer in the near future, you should
remove the batteries before storing the Printer.
You can use rechargeable batteries, but they cannot be recharged inside the
Printer. Battery life for a single charge is less than for alkaline batteries.
Self-Test and Battery Status. If you suspect that the Printer is not
operating properly, run the self-test (refer to page 123.) If the printer fails
the self-test, rerun the test to verify results. If the printer fails again, it may
require service.
The battery status is a number from 0 to 5 that describes how much useful
battery life remains. Regardless of the battery status, you should install new
batteries when any of the symptoms of low batteries appear. If you
anticipate needing to operate the printer without interruption for an extended
period of time, you may want to install new batteries before the status has
dropped to 2.
Controlling the print head. If you turn the Printer Power Switch to OFF
while it is printing, the print head may stop in the middle of the line. To
return the print head to the left side of the paper, turn the Printer to ON, then
OFF. Leaving the print head in the middle of a line causes temporary
lightening of characters in that column; continued printing restores the print
contrast in that position.
Incorrect or missing characters. The
detects incorrect data due to interference with or interruption of the stream
of incoming information. Common causes for incorrect data are improper
positioning of the Printer with respect to the System, obstruction of the
infrared beam, or interference from another infrared source.
The character is printed if information is lost because the Printer cannot
print fast enough to keep up with incoming data.
Environmental Limits. You should observe the following temperature and
humidity limits to preserve product reliability -- operating temperature: 0 to
50 C (32 to 122 F), storage temperature: -40 to 60 C (-40 to 140 F),
humidity: 5% to 95% relative humidity at 40 C (104 F).
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character is printed if the Printer