Texas Instruments TI-80 User Manual - Page 216
The calculator will not turn on unless the red switch is, in the center position.
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Changing the Batteries (Continued) Hold the new battery in place and slide the metal battery cover back into position over the battery. Push the red switch to its center position to lock the metal covers and batteries into place. Note: The calculator will not turn on unless the red switch is in the center position. B-6 Service and Warranty Information
B-6
Service and Warranty Information
Hold the new battery in place and slide the metal battery
cover back into position over the battery.
Push the red switch to its center position to lock the metal
covers and batteries into place.
Note:
The calculator will not turn on unless the red switch is
in the center position.
Changing the
Batteries
(Continued)