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Observe the following safety precautions before performing any installation or break/fix procedures involving disassembly or
re-assembly:
Turn off the system and any attached peripherals.
Disconnect the system and any attached peripherals from AC power, and then remove the battery.
Disconnect any telephone or telecommunications lines from the system.
Use a wrist grounding strap and mat when working inside any computer system to avoid electrostatic discharge
(ESD) damage.
After removing any system component, carefully place the removed component on an anti-static mat.
Wear shoes with non-conductive rubber soles to help reduce the chance of being shocked or seriously injured in an
electrical accident.
Standby Power
Dell products with standby power must be completely unplugged before opening the case. Systems that incorporate standby
power are essentially powered while turned off. The internal power allows the system to be remotely turned on (wake on
LAN), suspended into a sleep mode, and have other advanced power management features. After unplugging the system,
allow the charge to drain from the circuits by waiting approximately 30 to 45 seconds before removing components.
ESD
ESD is a major concern when handling components, especially expansion cards and system boards. Very slight charges
can damage circuits in ways that may not be obvious, such as intermittent problems or a shortened product lifespan.
To prevent static damage, do the following:
Use an ESD wrist strap that is properly grounded.
If a strap is not available, discharge static electricity from your body before you touch any of your computer's
electronic components, by touching an unpainted metal surface on the computer chassis. Periodically touch an
unpainted metal surface to remove any static charge your body may have accumulated.
Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench
pads.
When handling static-sensitive components, grab them by the sides, not the top. Avoid touching pins and circuit
boards.
When unpacking a static-sensitive component from its shipping carton, do not remove the component from the anti-
static packing material until you are ready to install the component. Before unwrapping the anti-static packaging, be
sure to discharge static electricity from your body.
Before transporting a static-sensitive component, place it in an anti-static container or packaging.
Lifting Equipment
Adhere to the following guidelines when lifting equipment:
1. Get a firm balanced footing. Keep your feet apart for a stable base, and point your toes out.
2. Bend your knees. Do not bend at the waist.
3. Tighten stomach muscles. Abdominal muscles support your spine when you lift, offsetting the force of the load.
4. Lift with your legs, not your back.
5. Keep the load close. The closer it is to your spine, the less force it exerts on your back.
6. Keep your back upright, whether lifting or setting down the load. Do not add the weight of your body to the load.
Avoid twisting your body and back.
7. Follow the same techniques in reverse to set the load down.
Safety Precautions
WARNING:
Do not use an ESD grounding strap when working on the internal parts of a monitor, like the CRT, because the stored
voltage is extremely harmful.
CAUTION:
Do not lift greater than 50 pounds independently. Always obtain assistance from a second person or utilize a
mechanical lifting device.
Printed 2/22/2010 11:17:19 AM
Latitude™ D620
For Dell Employees Only
Expires 2/23/2010 11:17:19 AM
Safety Precautions
This document is Dell Confidential
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