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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 in-
side the printer. Battery life for a single charge is less than for alkaline
batteries.
Self-Test and Battery Condition Index. If you suspect that the
printer is not operating properly, run the self-test (refer to page 14.) If
the printer fails the self-test, rerun the test to verify the results. If the
printer fails again, it requires service. The self-test can be run using
the optional AC adapter; however, the battery condition index will
not be accurate.
The battery condition index is a number from 0 to 5 that describes
how much useful battery life remains. Regardless of the battery con-
dition index, you should install new batteries when any of the
symptoms of low batteries appear. If you anticipate needing to oper-
ate the printer from batteries without interruption for an extended
period of time, you may want to install new batteries before the index
has dropped to 1.
Controlling the print head. If you turn the printer 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 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 E character is printed if the
printer 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 calcu-
lator (distance and/or angle), 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.
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