Installing and Replacing Parts
Chapter 4: Troubleshooting the PA PowerStation
40
PA PowerStation User Guide
Installing and
Replacing Parts
This section includes instructions for performing internal maintenance
on the PA PowerStation. To prevent injury to yourself or damage to the
PowerStation, you will need to carefully read and understand the
procedures described in this section. This section will show you how
to perform the following operation:
•
Before you begin, this section describes electrostatic discharge (ESD)
precautions that you should take whenever you work inside the PA
PowerStation.
Warning
For safety reasons, only qualified service personnel should open
the PowerStation.
Electrostatic
Discharge
Precautions
Modern integrated electronic devices, especially CPUs and memory
chips, are extremely sensitive to electrostatic discharges (ESD) and
fields. Before you disassemble the PA PowerStation, follow these
simple precautions to protect you and the PowerStation from harmful
ESD.
•
To avoid electric shock, always disconnect power from the
PowerStation before opening or disassembling the unit. Do not
touch any components on the CPU card or other cards while the
PowerStation is on.
•
Disconnect power before making any hardware configuration
changes. A sudden static discharge as you connect a jumper or
touch any internal parts may damage sensitive electronic
components.
•
Only handle internal components in an ESD-safe location, using
appropriate grounding methods.
•
Wear a grounding wrist strap for continuous protection.
•
Always ground yourself to remove any static charge before you
touch the CPU card.
•
Be particularly careful not to touch the chip connectors.
•
Keep any card or SDRAM module in its anti-static packaging
when it is not installed in the PowerStation. Place it on a static
dissipative mat when you are working on it.
Once you have read and understand the ESD safety precautions, you
are ready to continue with the appropriate instructions.
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