The safety precautions chapter details the
primary steps to be taken before performing any disassembly instructions.
Standby
power
Observe the following safety precautions before you perform any installation
or break/fix procedures involving disassembly or reassembly:
Turn off the system and
all attached peripherals.
Disconnect the system
and all attached peripherals from AC power.
Disconnect all network
cables, telephone, and telecommunications lines from the system.
Use an ESD field service kit when working inside any notebook 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 reduce the chance of getting electrocuted.
Dell products with standby power must
be unplugged before you open the case. Systems that incorporate
standby power are essentially powered while turned off. The internal
power enables the system to be remotely turned on (wake on LAN) and
suspended into a sleep mode and has other advanced power management
features.
Unplugging, pressing and holding the power button for 15 seconds should discharge residual power in the system board. Remove the battery from notebooks.
Bonding
Bonding is a method for connecting two or more grounding
conductors to the same electrical potential. This is done through
the use of a field service electrostatic discharge (ESD) kit. When
connecting a bonding wire, ensure that it is connected to bare metal
and never to a painted or non-metal surface. The wrist strap should
be secure and in full contact with your skin, and ensure that you
remove all jewelry such as watches, bracelets, or rings prior to
bonding yourself and the equipment.
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