8
WARNING: Safety Instructions
SAFETY: General
Observe and follow service markings:
• Do not service any product except as explained in the user documentation.
Opening or removing covers that are marked with a triangular symbol with
a lightning bolt might expose you to electrical shock. Components inside
these compartments must be serviced only by a trained service technician.
• Use the product only with Dell-approved equipment.
• Operate the product only from the type of external power source indicated
on the electrical ratings label. If you are not sure of the type of power
source required, consult your service provider or local power company.
SAFETY: When Working Inside Your System
Before you remove the system covers, perform the following steps in the
sequence indicated.
WARNING:
Only trained service technicians are authorized by Dell to remove
covers from the system, and access any of the internal components, unless the
Dell documentation expressly states otherwise.
CAUTION:
To help avoid possible damage to the system board, wait five seconds
after turning off the system before disconnecting the controller.
1
Turn off the system and any devices.
2
Wear grounding straps that are properly grounded before touching
anything inside the system.
3
While you work, periodically touch an unpainted metal surface on the
chassis to dissipate any static electricity that might harm internal
components.
4
Disconnect your system and devices from their power sources. To reduce
the potential of personal injury or shock, disconnect any
telecommunication lines from the system.
A5_bk0.book Page 8 Thursday, February 10, 2011 8:34 PM