260 Appendix F: Batteries, Self-Tests, and Regulatory Information
Installing New Batteries
To prevent memory loss, never remove two old batteries at the same
time. Be sure to remove and replace the batteries one at a time.
To install new batteries, use the following procedure:
1. With the calculator turned off, using a #0 Phillips screwdriver,
loosen the captive screw holding the battery cover in place and pull
the screw up.
2. Slide the battery cover off.
3. Remove an old battery.
4. Insert a new CR2032 lithium battery, making sure that the positive
sign (+) is facing outward.
5. Remove and insert the other battery as in steps 3 through 4. Make
sure that the positive sign (+) on each battery is facing outward.
6. Replace the battery cover.
Note: Be careful not to press any keys while the battery is
out of the calculator. If you do so, the contents of
Continuous Memory may be lost and keyboard control
may be lost (that is, the calculator may not respond to
keystrokes).
7. Press = to turn on the power. If for any reason Continuous
Memory has been reset (that is, if its contents have been lost), the
display will show
Pr Error
. Pressing any key will clear this message.
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