AVTM24-1J REV A April 2006
31
Section I
MAINTENANCE
Remove the instrument from its case by removing the
screws at each corner of the panel.
RECHARGEABLE BATTERIES
The internal rechargeable batteries may fail to hold a
charge after several hundred charge-discharge cycles,
resulting in shorter than normal service life. In addition to
a low reading on the battery test meter, battery failure
evidence is also given by a dim display and/or readings
that appear unstable or fluctuate more than normal. If the
batteries are suspect, a check should first be made of the
contacts in the battery holders to ensure that they are
clean. The contact buttons are made of stainless steel and
are easily cleaned. To remove the batteries, remove their
retainer straps. The cells can then be removed from their
holders.
If battery replacement is necessary, use the type of
batteries indicated in Section 3, Field Replaceable Parts
List. Be sure to install them in their holders in the proper
polarity, as indicated on the labels in the holders, and
replace the retainer straps.
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