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Introduction

In this guide we will be replacing the backup battery for the TI-92.

  1. Texas Instruments TI-92 Backup Battery Replacement, Back Cover: étape 1, image 1 de 3 Texas Instruments TI-92 Backup Battery Replacement, Back Cover: étape 1, image 2 de 3 Texas Instruments TI-92 Backup Battery Replacement, Back Cover: étape 1, image 3 de 3
    • 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.

  2. Texas Instruments TI-92 Backup Battery Replacement: étape 2, image 1 de 2 Texas Instruments TI-92 Backup Battery Replacement: étape 2, image 2 de 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.

  3. Texas Instruments TI-92 Backup Battery Replacement: étape 3, image 1 de 2 Texas Instruments TI-92 Backup Battery Replacement: étape 3, image 2 de 2
    • "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.

  4. Texas Instruments TI-92 Backup Battery Replacement, Backup Battery: étape 4, image 1 de 1
    • 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"

  5. Texas Instruments TI-92 Backup Battery Replacement: étape 5, image 1 de 1
    • Remove the screw and lift the panel to access battery.

  6. Texas Instruments TI-92 Backup Battery Replacement: étape 6, image 1 de 2 Texas Instruments TI-92 Backup Battery Replacement: étape 6, image 2 de 2
    • 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.

  7. Texas Instruments TI-92 Backup Battery Replacement: étape 7, image 1 de 3 Texas Instruments TI-92 Backup Battery Replacement: étape 7, image 2 de 3 Texas Instruments TI-92 Backup Battery Replacement: étape 7, image 3 de 3
    • Remove the metal cover keeping the backup battery in place.

  8. Texas Instruments TI-92 Backup Battery Replacement: étape 8, image 1 de 2 Texas Instruments TI-92 Backup Battery Replacement: étape 8, image 2 de 2
    • 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.

  9. Texas Instruments TI-92 Backup Battery Replacement: étape 9, image 1 de 2 Texas Instruments TI-92 Backup Battery Replacement: étape 9, image 2 de 2
    • After the battery has been tilted out of its socket, simply remove it with your hands.

Conclusion

To reassemble your device, follow these instructions in reverse order.

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Daniel Maldonado

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Équipe

Cal Poly, Team 15-51, Garner Spring 2010 Membre de l'équipe Cal Poly, Team 15-51, Garner Spring 2010

CPSU-GARNER-S10S15G51

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