Speaker; Removing The Speaker - Dell ChengMing 3990 Service Manual

Steps
1. Slide the power-supply unit into the chassis until the securing tab snaps into position.
2. Replace the three screws (#6-32) that secure the power-supply unit to the chassis..
3. Route the power cable through the routing guides on the chassis and connect the power cables to their respective
connectors on the system board.
4. Connect the 4-pin power cable to the system board.
Next steps
Next steps
1. Install the fan assembly.
2. Install the front bezel.
3. Install the side cover.
4. Follow the procedure in

Speaker

Removing the speaker

Prerequisites
1. Follow the procedure in
2. Remove the side cover.
3. Remove the front bezel.
After working inside your
Before working inside your
computer.
computer.
Disassembly and reassembly 31