At T Cl4940 Number Pad Replacement And Cleaning Repair Guide

Difficulty

Moderate

Steps

Time Required

                          5 - 15 minutes

Sections

Number Pad
7 steps

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Introduction

What you need

Step 1

              Number Pad

Unplug your device before beginning disassembly.
Remove the phone line from the back cover of the device.
Remove the power cord from the side of the device.
Remove the phone cable from the side of the device.

Unplug your device before beginning disassembly.

Remove the phone line from the back cover of the device.

Remove the power cord from the side of the device.

Remove the phone cable from the side of the device.

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Step 2

Remove the five 4mm X 10mm screws from the back cover of the device using a Phillips #1 screwdriver.

Remove the five 4mm X 10mm screws from the back cover of the device using a Phillips #1 screwdriver.

Step 3

Using a metal spudger, pry the white, plastic cover from the gray, plastic bottom. Start from below the keypad and work your way evenly around the device.
There are brackets every few inches along the edge of the device. These may be difficult to pull apart.
The internals of the device will be accessible once the white, plastic cover and grey, plastic bottom are separated.

Using a metal spudger, pry the white, plastic cover from the gray, plastic bottom. Start from below the keypad and work your way evenly around the device.

There are brackets every few inches along the edge of the device. These may be difficult to pull apart.

The internals of the device will be accessible once the white, plastic cover and grey, plastic bottom are separated.

Step 4

Remove the five 5mm X 5mm screws located on the yellow side of the motherboard using a Phillips #1 screwdriver.
Set the motherboard out of the way.

Remove the five 5mm X 5mm screws located on the yellow side of the motherboard using a Phillips #1 screwdriver.

Set the motherboard out of the way.

Step 5

Remove the two 5mm X 8mm large number pad screws using a Phillips #1 screwdriver.
Remove the 5mm X 6mm latch screw using the same screwdriver.
Remove the small, metal latch.
Remove the plastic plate previously secured by the screws and latch.

Remove the two 5mm X 8mm large number pad screws using a Phillips #1 screwdriver.

Remove the 5mm X 6mm latch screw using the same screwdriver.

Remove the small, metal latch.

Remove the plastic plate previously secured by the screws and latch.

Step 6

Remove the remaining six 5mm X 8mm large number pad screws using a Phillips #1 screwdriver.
Remove the two 3mm X 6mm small number pad screws using the same screwdriver.
Grab the edge of the number pad board and peel it away from the screw posts.
Using a clean towel or cloth, move the number pad board away from the keys that lie below.
Set the number pad board out of the way for further disassembly.

Remove the remaining six 5mm X 8mm large number pad screws using a Phillips #1 screwdriver.

Remove the two 3mm X 6mm small number pad screws using the same screwdriver.

Grab the edge of the number pad board and peel it away from the screw posts.

Using a clean towel or cloth, move the number pad board away from the keys that lie below.

Set the number pad board out of the way for further disassembly.

Step 7

Peel away the white, rubber mat and set it aside for cleaning.
Remove the main key pad and any remaining keys. Remember where each key is located for reassembly.
Clean the rubber mat with a damp paper towel to remove any dust or foreign substances.
Replace any broken or cracked keys.

Peel away the white, rubber mat and set it aside for cleaning.

Remove the main key pad and any remaining keys. Remember where each key is located for reassembly.

Clean the rubber mat with a damp paper towel to remove any dust or foreign substances.

Replace any broken or cracked keys.

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

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                    Nigel Mathias

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                       IUPUI, Team 2-2, Harley Spring 2016                        

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What you need#

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Introduction

What you need

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