5-2 SPARCstation 5 Model 110 Service Manual • November 1996
To protect both yourself and the equipment, observe the safety precautions listed in
TABLE 5-1.
5.2 Symbols
The following symbols mean:
TABLE 5-1 Safety Precautions
Item Problem Precaution
AC power cord Electric shock Unplug the AC cord from the AC wall socket
before working on the power supply.
Grounding Leave the AC power cord plugged into the
AC wall outlet when replacing drives,
DSIMMs, chips, or the system board. Leaving
the AC power cord plugged into the wall
outlet provides a grounding path for the wrist
strap, which must be attached.
Wrist strap Electrostatic
Discharge (ESD)
Wear a wrist strap when handling printed
circuit boards, drives, or other components
such as DSIMMs.
ESD mat ESD An approved antistatic mat provides
protection from static damage when used
with a wrist strap. The mat also cushions and
protects small parts that are attached to
printed circuit boards. Chapter 12 “, lists the
part number of the mat.
Printed circuit
boards
ESD Handle a printed circuit board by the edges
only. Store a board in an antistatic bag.
Cover System damage
and overheating
Replace the cover after performing service on
the system.
SBus slot filler
panels
System damage
and overheating
Install filler panels in all unused SBus
openings. Openings on the back of the system
board reduce the cooling capability of the
system.
TurboSPARC chip
heat sink
Heat, burns Do not touch the TurboSPARC chip. The heat
sink can be hot enough to cause personal
injury.
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