Sharp OZ-5600 Operation Manual page 204

4. Remove the memory backup battery cover.
5.
Remove the old battery using a pen or a similar
object.
6.
Insert a new battery with the plus (+) side up.
7.
Replace the memory backup battery cover and secure
it with the screw.
8.
Set the battery replacement switch to NORMAL
OPERATION.
If nothing happens when you press
Setting the battery replacement switch to REPLACE
BATTERIES shuts off power to the unit. Check that the
battery replacement switch is set to NORMAL
OPERATION.
Repeat the above battery replacement procedure step
by step.
:
ON
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