3. Slide the battery cover switch to MAIN, and then remove the main battery cover.
4. Remove the main battery and then load a new battery pack.
∙Make sure that the battery pack is oriented correctly.
5.Replace the main battery cover.
6.Slide the battery cover switch to LOCK.
Replacing the Backup Battery
Important 
∙Never remove the main battery and backup battery from the CASSIOPEIA at the same time. Doing so causes all data stored in memory to be deleted.
∙Should the main battery and the backup battery both require replacement, be sure to always replace the main battery first.
∙Be sure to replace the backup battery as soon as possible whenever the following
message appears on the display: “Backup Battery Very Low To prevent possible data loss, replace or recharge your backup battery according to the owner’s manual.”
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