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Removing and Installing Parts
Dell™XPS™720Owner'sManual
Before You Begin
This chapter provides procedures for removing and installing the components in your computer. Unless otherwise noted, each procedure assumes that a
component can be replaced by performing the removal procedure in reverse order.
Recommended Tools
The procedures in this document may require one or more of the following tools:
l Small flat-blade screwdriver
l Phillips screwdriver
l Flash BIOS update (see the Dell support website at support.dell.com)
Preparing to Work Inside Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to help ensure your own personal safety.
1. Ensure that the work surface is level and protected to prevent either the surface or the computer from being scratched.
2. Shut down the operating system:
l In Windows XP, click Start® Turn Off Computer® Turn off.
Before You Begin
Removing the Computer Cover
Memory
Cards
Drives
Hard Drive
Drive Panel
Floppy Drive
Media Card Reader
Optical Drive
Liquid Cooling Assembly
Processor
Fans
System Board
Power Supply
Front I/O Panel
Battery
Removing the Computer Stand
Replacing the Computer Cover
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To reduce the risk of fire, electric shock, or injury, do not overload an electrical outlet, power strip, or convenience receptacle. The
total ampere rating of all products plugged into an electrical outlet, power strip, or other receptacle should not exceed 80 percent of the branch
circuit rating.
CAUTION: Your computer is heavy and can be difficult to maneuver. Seek assistance before attempting to lift, move, or tilt the computer and
always lift correctly to avoid injury; avoid bending over while lifting.
CAUTION: The liquid cooling assembly is not user serviceable or upgradeable. All required service should be done by qualified service personnel
only. The liquid cooling assembly in your system contains a non-refillable coolant. In the event of a coolant leak, shut down your system
immediately. Unplug your system from the power outlet and contact Dell Technical Support. In the event of skin contact with the coolant, wash
your skin with soap and water. Seek medical attention if irritation develops. In the event of eye contact with the coolant, rinse your eyes
immediately with water, with your eyelids open, for 15 minutes. Seek medical attention if irritation persists.
NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not
covered by your warranty.
NOTICE: To avoid electrostatic discharge and damage to internal components, ground yourself by using a wrist grounding strap or by periodically
touching an unpainted metal surface on the computer chassis.
NOTICE: Handle components and cards with care. Do not touch the components or contacts on a card. Instead, hold a card by its edges or by its metal
mounting bracket. Hold a component such as a microprocessor by its edges, not by its pins.
NOTICE: When disconnecting a cable, pull on the cable's connector or its strain-relief loop, not on the cable itself. Some cables have connectors with
locking tabs; before disconnecting this type of cable, press inward on the locking tabs to release the connector. When connecting or disconnecting a
cable, ensure that the connectors are correctly oriented and aligned to avoid damage to the connector and/or the connector's pins.
NOTICE: To avoid losing data, save any work in progress and exit all open programs before turning off your computer.