Installing The Power Supply Unit (Psu); Removing The Speaker - Dell ChengMing 3977 Tower Owner's Manual

Installing the power supply unit (PSU)

1 Place the power supply in the chassis and slide towards the back of the system to secure it.
2 Tighten the screws (6-32xL6.35) at the back of the computer to secure power supply.
3 Connect the 8-pin power cable to the system board.
4 Thread the power cables through the chassis clip.
5 Connect the 4-pin power cable to the system board.
6 Install the:
a cooling shroud
b front bezel
c cover
7 Follow the procedure in
Speaker

Removing the speaker

1 Follow the procedure in
2 Remove the:
a cover
b front bezel
3 To remove the speaker:
a Disconnect the speaker cable from system board [1].
After working inside your computer.
Before working inside your computer.
Removing and installing components 15