Dell XPS 720 H2C (Mid 2007) - Manual (Page 85)

Removing and Installing Parts
85
Removing and Installing Parts
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:
• Small flat-blade screwdriver
• Phillips screwdriver
• 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.
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.