Casio DT-940 Service Manual page 10

2.4 LOADING AND REMOVING THE BACKUP LITHIUM BATTERY
When the backup lithium battery low voltage message appears on the LCD screen, immediately replace
the backup battery (lithium). Use a CR2032 lithium battery as the replacement battery. Be sure to turn the
Handheld Terminal OFF before you do this.
[Caution]
For Important Data
• When you remove the backup battery with the main battery removed or in a low-power
state, data may be lost or may change. Data cannot be recovered once it is lost or
corrupted. Be sure to make back-up copies of all important data. One way to do this is
to use one of the optional cradles to transfer data to a computer.
Important! Make sure that the positive (+) and negative (─) ends of the battery are facing the
correct directions.
LOADING THE BACKUP LITHIUM BATTERY
1. Use a screwdriver to rotate the screw that secures the backup
battery holder in place counterclockwise to loosen it.
2. Open the backup battery compartment cover.
3. Carefully wipe the backup battery (lithium battery) with a dry
cloth before inserting it with the plus (+) side up as shown in the
diagram.
4. Push the lithium battery in the direction shown by the arrow to
hook it.
5. Close the backup battery cover and tighten the screws.
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Hook