Casio PA-2400U, Service Manual And Parts List

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5. Reattach the battery holder to the CASSIOPEIA.
• The battery holder will emit a click and the battery holder release will automatically lock when the battery
holder is securely in place.
Replacing the back-up batteries
The CASSIOPEIA uses two lithium batteries for back-up power: a CR2032 primary battery and an IVR2430
rechargeable battery. The rechargeable battery comes pre-installed in the CASIOPEIA when you purchase
it.
Important!
• Never remove both the main batteries and the back-up batteries from the CASSIOPEIA at the same
time. If you do, data stored in memory can be corrupted or lost entirely.
• The rechargeable back-up battery is charged by power from the main batteries. The rechargeable bat-
tery is provided in order to prevent premature discharging of the primary back-up battery. Never remove
the rechargeable back-up battery.
• Replace the primary back-up battery as soon as possible after the message shown below appears.
“Your backup battery is very low or missing. Data loss may result from failure to replace the battery very
soon.”
To replace the primary back-up battery
1. Make sure the CASSIOPEIA is turned off.
• If the CASSIOPEIA is on, press the power switch to turn it off.
2. Close the protective cover and turn the CASSIOPEIA over.
3. Remove the screw that secures the back-up battery compartment cover in place.
4. Remove the old batteries from the battery holder and load two new ones.
• When loading new batteries, make sure that their positive (+) and negative (–) ends are facing correctly.