2
Tools
You will need the following tools to service the system:
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Antistatic wrist strap
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Antistatic mat connected to an earth ground
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Quarter-inch nutdriver
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No. 1 and No. 2 Phillips screwdrivers
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Small or medium flat-blade standard screwdriver
You do not need any tools to open the TDZ 2000 GL2/ExtremeZ GL2 case.
Protecting Against Electrostatic Discharge
Electrostatic discharge (ESD) can damage sensitive components inside the unit. Take the
following precautions when working with internal components:
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Unplug the unit from AC power before servicing any electronic component inside the
chassis. Remember that the system is always on when connected to AC power.
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Touch the bare metal of the chassis to ensure the chassis and your body are at the same
electric potential.
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Attach the antistatic wrist strap to its connector on the antistatic mat. Ensure that the
metal conductor bead in the elastic sleeve of the antistatic strap contacts bare skin.
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Handle all printed circuit boards as little as possible and by the edges only.
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Leave new parts in their protective packaging until you install them.
Opening and Closing the Case
CAUTION Before you open the case, shut down the system and turn off power to the system and
external devices (including peripheral drives and display). Use caution to avoid injury when
lifting the computer or removing covers and other hardware.
Opening the system for service or upgrades consists of two simple steps. Remove the top
cover first, then remove the left side panel. No tools are needed. You need only remove the
top cover and left side panel for most routine service procedures. See Chapter 2, “Servicing
the System,” for additional details on removing and replacing case components.
CAUTION Do not use the bottom portion of the face panel or the lip at the top, rear of the unit as a hand
hold when moving the system. Equipment damage and personal injury can result.