简介

This guide will help you remove the circuit board from the outer telephone case. You may need to remove the circuit board to repair internal components, such as buttons.

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步骤 1 Back Cover

Nortel Networks i2004 IP Circuit Board Replacement, Back Cover: 步骤 1 中的图像 1，3

Nortel Networks i2004 IP Circuit Board Replacement, Back Cover: 步骤 1 中的图像 2，3

Nortel Networks i2004 IP Circuit Board Replacement, Back Cover: 步骤 1 中的图像 3，3

Flip the phone over to view the back.
Remove the power and phone cords.

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步骤 2

Remove the seven 8mm Phillips #2 screws.

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步骤 3

Lift up the back cover slowly because there are still wires attached to the circuit board.
Lifting the back cover should not require a lot of force; simply lift with your fingertips.

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步骤 4

Disconnect the rubber piece by pulling it out of the slot, freeing the back cover completely.

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步骤 5

Remove the six 8mm Phillips #2 screws.
Pull the speaker phone cover straight up.

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步骤 6 Circuit Board

Nortel Networks i2004 IP Circuit Board Replacement, Circuit Board: 步骤 6 中的图像 1，1

Remove the red and white wires from the rubber casing rim.

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步骤 7

Lift out the speaker and set it away from the tray that holds it.
Then remove the black plastic tray at the bottom by lifting it straight up.

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步骤 8

Remove the two 8mm Phillips #2 screws.

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步骤 9

Pull the gray plastic casing away from the circuit board as you remove the clear, curved, plastic piece straight up.

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步骤 10

Nortel Networks i2004 IP Circuit Board Replacement: 步骤 10 中的图像 3，3

There are three clips on the circuit board to un-clip.
Unclip both back black clips with your fingertips.
Push the middle black clip towards the bottom of the picture with a flathead screwdriver.

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步骤 11

There's a brown ribbon still attached to the circuit board and phone case, so don't pull the circuit board completely off just yet.
Lift the edge of the circuit board over the phone case and slightly up, so the bottom of circuit board can be viewed.

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