68P80801E30-A 5/1/2002
1-7
Gen 3 Site Controller System Manual
Chapter 1 Manual Overview
Static Sensitive Precautions
! WARNING !
WARNING
!
Static Sensitive
Precautions
The static grounding wrist strap (Motorola p/n 42-80385A59) supplied with
the site controller must always be used when handling any board or module.
Many of the boards or modules used in the site controller are vulnerable to
damage from static charges.
Extreme care must be taken while handling, shipping, and servicing these
boards or modules. To avoid static damage, observe the following
precautions:
■
Prior to handling, shipping, and servicing site controller equipment,
always wear a conductive wrist strap connected to the grounding clip on
the Cabinet. This discharges any accumulated static charges.
USE EXTREME CAUTION WHEN WEARING A
CONDUCTIVE WRIST STRAP NEAR SOURCES OF
HIGH VOLTAGE. THE LOW IMPEDANCE PROVIDED
BY THE WRIST STRAP ALSO INCREASES THE
DANGER OF LETHAL SHOCK SHOULD ACCIDENTAL
CONTACT WITH HIGH VOLTAGE SOURCES OCCUR.
■
Handle modules by the edges and avoid touching any conductive parts of
the module with your hands.
■
Never remove boards or modules with power applied to the unit (hot-pull)
unless you have verified it is safe to do for a particular board or module.
Make sure the unit will not be damaged by this. Several boards and
modules require that power be turned off prior to removal.
■
Avoid carpeted areas, dry environments, and certain types of clothing (silk,
nylon, etc.) during service or repair due to the possibility of static buildup.
■
Apply power to the circuit under test before connecting low impedance
test equipment (such as pulse generators, etc.). When testing is complete,
disconnect the test equipment before power is removed from the circuit
under test.
