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Dell OptiPlex All-in-One Plus 7420 - Speakers; Removing the speakers

Dell OptiPlex All-in-One Plus 7420
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Figure 58. Installing the I/O bracket
Steps
1. Place and align the I/O bracket with the display-assembly base.
2. Align the I/O slots to the I/O ports and the screw holes on the I/O bracket with the screw holes on the display-assembly
base.
3. Replace the two screws (M3x5) that secure the I/O cover to the display-assembly base.
4. Place the power-supply connector cable bracket on the display-assembly base.
5. Align the power-supply cable connector bracket screw holes with the screw holes on the display-assembly base.
6. Replace the two screws (M3x5) that secure the power-supply cable connector bracket to the display-assembly base.
Next steps
1. Install the bottom cover.
2. Install the I/O cover.
3. Install the system-board shield.
4. Install the back cover.
5. Install the stand.
6. Follow the procedure in After working inside your computer.
Speakers
Removing the speakers
CAUTION: The information in this removal section is intended for authorized service technicians only.
Prerequisites
1. Follow the procedure in Before working inside your computer.
2. Remove the stand.
3. Remove the back cover.
4. Remove the system-board shield.
Removing and installing Field Replaceable Units (FRUs)
87

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