Calculator:

Provides a 12-digit calculator which performs mathematical operations, including square root and percentage calculations.

Changing the batteries:

When using the organizer, if the m symbol appears at the bottom of the display, the operating batteries should be replaced as soon as possible.

1.Turn off the Organizer.

2.Set the battery replacement switch on the bottom of the Organizer to REPLACE BATTERIES. (A red dot will appear.)

3.Slide off the operating batteries cover.

4.Remove the old batteries by pulling the ribbon tab.

5.Insert the two new batteries on top of the ribbon tab, taking care to position them correctly according to the plus (+) and minus (-) terminals, as shown below.

6.Replace the cover.

7.Set the battery replacement switch to NORMAL OPERATION.

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Sharp ZQ-630, ZQ-640, Z&650 operation manual Calculator, Changing the batteries