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Texas Instruments ti 73 Manual

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Appendix C: Service and Warranty Information
341
99APPX-C.DOC Appx C:Battery/Service and Warranty Information, English Julie Hewlett Revised: 02/27/01 4:35
PM Printed: 02/28/01 11:29 AM Page 341 of 6
Replacing the Batteries
1. Turn off the calculator. Replace the slide cover over the
keyboard to avoid inadvertently turning on the calculator.
Turn the back of the calculator toward you.
2. Hold the calculator upright, push downward on the latch
on the top of the battery cover with your finger, and then
pull the cover toward you.
Note:
To avoid loss of information stored in memory, you
must turn off the calculator. Do not remove the AAA
batteries and the lithium battery simultaneously.
3. Replace all four AAA alkaline batteries simultaneously.
Or, replace the lithium battery.
•
To replace the AAA alkaline batteries, remove all
four discharged AAA batteries and install new ones
according to the polarity (+ and -) diagram in the
battery compartment.
•
To replace the lithium battery, remove the screw
from the lithium-battery cover, and then remove the
cover. Install the new battery, + side up. Replace the
cover and secure it with the screw. Use a CR1616 or
CR1620 (or equivalent) lithium battery.
4. Replace the battery compartment cover. Turn the
calculator on and adjust the display contrast (
-
$
or
-
#
), as necessary.
Battery Precautions
Take these precautions when replacing batteries:
•
Do not mix new and used batteries. Do not mix brands or
type within brands of batteries.
•
Do not mix rechargeable and non-rechargeable batteries.
•
Install batteries according to polarity (+ and -) diagrams.
•
Do not place non-rechargeable batteries in a battery
recharger.
•
Do not incinerate batteries.
… 347 …


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