Symbols - Sun Microsystems SPARCclassic Service Manual

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

Symbols

The following symbols mean:
Caution -
serious injury or death.
Caution -
damage to data or to the operating system.
SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual ♦ Revision A, November 1993
42
Safety Precautions
Problem
Electric shock
Grounding
Electrostatic
Discharge (ESD)
ESD
ESD
System damage
and overheating
System damage
and overheating
This equipment contains lethal voltages. Accidental contact can result in
Physical danger due to a non-electrical hazard or danger of irreversible
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, SIMMs, 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 SIMMs.
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 slots. Openings
on the back of system board reduces the cooling
capability of the system.