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238
Replacing the memory backup battery
The memory backup battery has an expected
lifetime of about five years under normal conditions
(temperature extremes can shorten this lifetime).
Replace the memory backup battery every five
years.
WARNING:
When the operating batteries are depleted, replace
them promptly with new batteries. If depleted
operating batteries are not replaced, the memory
backup battery is drained more quickly than
normal.
Memory backup battery lifetime (approx.):
• 1 month (if operating batteries are depleted)
• 5 years (when operating batteries are replaced
promptly)
Do not replace the memory backup battery if the
operating batteries are weak, as this may result in
the loss of all data. If necessary, replace the
operating batteries before replacing the memory
backup battery.
To replace the memory backup battery:
1.
Turn off the unit.
2.
Set the battery replacement switch on the
back to "REPLACE BATTERIES" (the red dot
is visible).
3.
Undo the screw from the memory backup
battery cover.
2
1
4.
Remove the memory backup cover.
RESET
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