JMA-9100 Instruction Manual > 8.COUNTERMEASURE FOR TROUBLE ... > 8.4  REPLACEMENT OF MAJOR PARTS
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6)  Insert the flat tip nonconductive screwdriver for 
adjustment or some stick to the location shown 
in the figure below and slide the battery 
sideways to remove the battery. 
 
[Assembly]
1)  Check the polarity of the battery. Make sure that 
the battery's positive (+) side is facing up.
2)  Slide the battery sideways into the battery 
holder.
3)  Make sure that the battery is inserted fully.
[Check Item]
1)  Check that no error message comes up.
2)  Check that the system starts up normally.
[Notes]