Texas Instruments TI-92 User manual

Replacing Texas Instruments TI-92 Backup Battery

Tools used in this guide

Phillips #00 Screwdriver

Parts relevant to this guide

CR 2032 3V Lithium Battery

Step 1 - installation Back Cover

The first step to any repair operation is to

remove the front cover.

Grab the back of the calculator with one hand and the

cover with the other.

Pull the cover off from one of the sides for easy

removal.

Replacing Texas Instruments TI-92 Backup Battery

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Step 2

Orientate the calculator with the top facing towards you.

Slide the locking tab,found on the top part of the

calculator, to the unlock position.

Step 3

"Locking Tab"

To remove the back cover, slide the cover away from

the locking tab towards the bottom of the calculator until

the cover no longer slides.

Then with the front of the calculator facing down, pull

up on the back cover.

The calculator should now be orientated with the front

facing down, as shown in picture 2.

Replacing Texas Instruments TI-92 Backup Battery

© 2010 iFixit — CC BY-NC-SA www.iFixit.com Page 2 of 5

Step 4 - Backup Battery

Before removing the backup battery make

sure your AA batteries are installed so that

there is no loss of information.

Using a #00 Philip Screwdriver remove the 19mm

screw located near the center of the back of the

calculator on the panel with words "Test Access"

Step 5

Remove the screw and lift the panel to access battery.

Replacing Texas Instruments TI-92 Backup Battery

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Step 6

The backup battery can now be seen underneath a

small metal cover held by a screw.

Using the same screwdriver, unscrew the 4.6mm screw

located under the panel and left of the backup battery.

Step 7

Remove the metal cover keeping the backup battery in

place.

Replacing Texas Instruments TI-92 Backup Battery

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Step 8

Use an Ipod Opening Tool or a similar tool to pull up on

the right side of the backup battery.

The battery should pop out of position.

Step 9

After the battery has been tilted out of its socket, simply

remove it with your hands.

Replacing Texas Instruments TI-92 Backup Battery

© 2010 iFixit — CC BY-NC-SA www.iFixit.com Page 5 of 5

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