Casio Fx 991Ms Battery Replacement Repair Guide

Difficulty

Easy

Steps

4

Time Required

                          8 - 10 minutes            

Sections

1

• Battery
• 4 steps

Flags

5

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Introduction

What you need

Step 1

              Battery               

• Remove the case and flip the calculator backwards.

Remove the case and flip the calculator backwards.

1024

Step 2

• Use a Philips #0 head screwdriver to remove the five screws on the back of the device.

Use a Philips #0 head screwdriver to remove the five screws on the back of the device.

Step 3

• The top half of the calculator is tightly closed.
• Carefully use an opening tool to slowly pry open the sides till it opens.
• Apply a little bit of force if this is the first time opening the calculator.

The top half of the calculator is tightly closed.

Carefully use an opening tool to slowly pry open the sides till it opens.

Apply a little bit of force if this is the first time opening the calculator.

Step 4

• Use an opening tool to gently remove the battery from the device.

Use an opening tool to gently remove the battery from the device.

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

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                    Anthony                     

Member since: 01/22/2021

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                       York University, Team S1-G16, Melo-Thaiss Winter 2021                        

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