Symbols - Sun Microsystems SPARCstation 5 Service Manual

TABLE 5–1
Item
AC power cord
Wrist strap
ESD mat
Printed circuit
boards
Cover
SBus slot filler
panels
microSPARC
chip
heat sink

Symbols

The following symbols mean:
Caution -
serious injury or death.
SPARCstation 5 Service Manual ♦ Revision A, August 1994
38
Safety Precautions
Problem
Electric shock
Grounding
Electrostatic
Discharge (ESD)
ESD
ESD
System damage
and overheating
System damage
and overheating
Heat, burns
This equipment contains lethal voltages. Accidental contact can result in
Precaution
Unplug the AC cord from the AC wall socket before
working on the power supply.
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.
Wear a wrist strap when handling printed circuit
boards, drives, or other components such as DSIMMs.
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.
Handle a printed circuit board by the edges only.
Store a board in an antistatic bag.
Replace the cover after performing service on the
system.
Install filler panels in all unused SBus openings.
Openings on the back of the system board reduce the
cooling capability of the system.
Do not touch the metal heat sink on the microSPARC
chip. The heat sink can be hot enough to cause
personal injury.