Disassembling Motorola i90c Logic Board

Tools used in this guide

Small Flathead Screwdriver (1) T-9 Torx screwdriver (1) Tweezers (1)
This guide details how to remove the logic board.

2011 iFixit CC BY-NC-SA

www.iFixit.com

Page 1 of 6

Step 1 - Battery
Slide the notch downward while pulling the back cover off to remove it.

Step 2

Use your fingers to push the battery upward from the bottom. Lift upwards to remove the battery.

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Step 3 - repair Antenna
Unscrew the antenna in a counter-clockwise fashion. Remove the aluminum cover.
Step 4 - Internal Backplate
Unscrew the 3 screws shown. Lift up the right part of the Nextel logo and unscrew the screw underneath.

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Step 5
DO NOT force the cover off as it could damage the ribbon cable!
Gently lift the back cover off.

Step 6

Carefully pry off the connection between the headphone jack and logic board.

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Step 7 - Logic Board
Lift the first logic board off of the rest of the device.

Step 8

Gently lift the second logic board from the rest of the device. DO NOT force the board straight off as it could damage the ribbon cable!

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Step 9
Using tweezers, carefully pull off the connector shown.
To reassemble your device, follow these instructions in reverse order.
This document was last generated on Feb 12, 2011.

Page 6 of 6

Repairing Motorola i90c Speaker System

Tools used in this guide

T-9 Torx screwdriver (1)
Today we are going to repair the speaker system in the phone. This may be due to simple wire disconnections and may require soldering or a replacement of the system.

2011 iFixit CC BY-NC-SA

www.iFixit.com

Page 1 of 5

Step 1 - disassembly Battery
Slide the notch downward while pulling the back cover off to remove it.

Step 2

Use your fingers to push the battery upward from the bottom. Lift upwards to remove the battery.

Page 2 of 5

Step 3 - Antenna
Unscrew the antenna in a counter-clockwise fashion. Remove the aluminum cover.
Step 4 - disassembly Internal Backplate
Unscrew the 3 screws shown. Lift up the right part of the Nextel logo and unscrew the screw underneath.

Page 3 of 5

Step 5
DO NOT force the cover off as it could damage the ribbon cable!
Gently lift the back cover off.

Step 6

Carefully pry off the connection between the headphone jack and logic board.

Page 4 of 5

Step 7 - Speaker System
Use the prying tools to wedge out the circular part of the speaker system. Carefully pull out the wiring and circuit board attached to the speaker system using a prying tool or tweezers.
To reassemble your device, follow these instructions in reverse order.
This document was last generated on Feb 12, 2011.

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