Service Manual

Before working inside your

computer

NOTE: The images in this document may dier from your computer

depending on the conguration you ordered.

Before you begin

1 Save and close all open les and exit all open applications.

2 Shut down your computer. Click Start → Power → Shut down.

NOTE: If you are using a dierent operating system, see the

documentation of your operating system for shut-down instructions.

3 Disconnect your computer and all attached devices from their electrical

outlets.

4 Disconnect all attached network devices and peripherals, such as keyboard,

mouse, and monitor from your computer.

5 Remove any media card and optical disc from your computer, if applicable.

6 After the computer is unplugged, press and hold the power button for 5

seconds to ground the system board.

Safety instructions

Use the following safety guidelines to protect your computer from potential

damage and ensure your personal safety.

WARNING: Before working inside your computer, read the safety

information that shipped with your computer. For more safety best

practices, see the Regulatory Compliance home page at www.dell.com/

regulatory_compliance.

WARNING: Disconnect all power sources before opening the computer

cover or panels. After you nish working inside the computer, replace all

covers, panels, and screws before connecting to the electrical outlet.