Casio DT-900 User's Guide download pdf (Page 18)

E-20

Power Supply

Replacing the Lithium Backup Battery

When the lithium backup 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 Data Collector OFF before you do this.

[Warning]

■ Note Down Valuable 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 the optional Basic

Cradle or Satellite Cradle to transfer data to a computer.

Important! • Make sure that the positive (+) and negative (–) ends of the battery are

facing the correct directions.

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.

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Casio DT-900 User's Guide Page 18