Texas Instruments TI-92 User Manual

Installing Texas Instruments TI-92 Motherboard
In this guide we will show how to access the motherboard and how to separate it from other internal
components.
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Installing Texas Instruments TI-92 Motherboard
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Texas Instruments TI-92 Specifications

General

Type	Graphing Calculator
Display Type	LCD
Display Size	240 x 128 pixels
Processor	Motorola 68000
Clock Speed	10 MHz
RAM	128 KB
Connectivity	Serial port
Programming Languages	TI-Basic, Assembly
Battery	4 AA batteries + 1 rechargeable battery
Operating System	TI-92 OS

Summary

Installing Texas Instruments TI-92 Motherboard

Step 1 - Back Cover Removal

Remove the front cover of the calculator by grabbing the back and pulling the cover off from one side.

Step 2 - Orient and Unlock

Orientate the calculator with the top facing you and slide the top locking tab to unlock the position.

Step 3 - Back Cover Sliding

Slide the back cover away from the locking tab until it no longer slides, then pull the cover up.

Step 4 - Battery Removal

Access and remove the two AA batteries by pressing and pulling them from their slots.

Step 5 - Back Case Screws

Unscrew the twelve 11.8mm Phillips screws located on the back of the calculator.

Step 6 - Central Panel Removal

Unscrew the 19mm screw near the center and remove the panel it holds.

Step 7 - Remaining Screws

Unscrew the remaining three 11.8mm screws using the Phillips screwdriver.

Step 8 - Rectangular Module Extraction

Pull up on both sides of the rectangular module while keeping the calculator flat.

Step 9 - Module Loosening

Pull out the rectangular module once it is sufficiently loose.

Step 10 - Back Cover Separation

Lift the back cover while holding the rest of the calculator flat to avoid dislodging keyboard buttons.

Step 11 - Motherboard Detachment

Pull the motherboard up while holding the calculator firmly to separate it from the rest of the device.