ANATEL A643, Operator'S Manual, Page: 168 / 222

168 of 220 Anatel A643a Maintenance - Anatel A643a
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Operator Manual
Anatel
6) Check the battery with a voltmeter. A voltage of 3.2 to 3.6 VDC is normal; less than
3.0 VDC and the lithium battery should be replaced.
Note:
When replacing the battery, ensure that the positive (+) indicator on the battery is inserted at
the positive end of battery holder.
To replace the battery:
7) Cut the plastic cable tie and remove the old battery. Place the new battery in its holder,
making sure to observe polarity.
8) Secure the battery in its holder with the new cable tie that is supplied with it.
9) Firmly but gently slide the boards back into the enclosure until they seat in their
connectors.
10) Reconnect the lower 26-pin cable and secure it in place in its connector by latching the
tabs. The solid red line (designating Pin #1) should be positioned on the right side of
the connector. Also tuck the ribbon cable back so that it does not obstruct the air filter
located in the bottom of the enclosure.
Fig 13-18 : Replace Battery