Opening And Closing The Base Unit; Avoiding Electrostatic Discharge; Opening The Base Unit - Intergraph TD-x20 System Reference Manual

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Opening and Closing the Base Unit

This chapter describes avoiding electrostatic discharge, opening the TD-x20, TD-x25, TDZ-
x20, and TDZ-x25 workstation's base unit, attaching an antistatic wrist strap, and closing
the base unit.

Avoiding Electrostatic Discharge

Some of the sensitive components inside the base unit can be damaged by static electricity.
To minimize this possibility, take the following precautions when working with the internal
components of the system to avoid electrostatic discharge.
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To maintain ground, do not unplug the power cord from the base unit, AC outlet, or
UPS.
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Touch the bare metal of the base unit to discharge any accumulated electrostatic charge.
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Do not service the system on surfaces known to have high electrostatic buildup, such as
rugs and carpets. Work on a static-safe surface instead.
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Handle all printed circuit boards as little as possible and by the edges only. Leave new
parts in their protective packaging until you install them.
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After opening the base unit, attach an antistatic wrist strap as described in the next
section.

Opening the Base Unit

WARNING Before opening the base unit, turn the system power off. Use caution when removing
the top cover to avoid injury.
To open the base unit of a desktop system:
1. Pull the plunger out and rotate it to lock it in the open position. See the following
figure.
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