4-3. Do-it-yourself maintenance
Open the case cover using a
coin protected with tape etc.
and remove the depleted bat-
tery.
Insert a new battery with the
ā+ā terminal facing up.
Type B
Remove the cover.
To prevent damage to the key,
cover the tip of the screwdriver
with a rag.
To prevent the buttons from
being disassembled, face the
button surface downward.
Remove the module.
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