Juniper SRX3400 Manuel utilisateur

Preventing Electrostatic Discharge Damage to the SRX3400 Services Gateway

Many services gateway hardware components are sensitive to damage from static

electricity. Some components can be impaired by voltages as low as 30 V. You can

easily generate potentially damaging static voltages whenever you handle plastic or

foam packing material or if you move components across plastic or carpets. Observe

the following guidelines to minimize the potential for electrostatic discharge (ESD)

damage, which can cause intermittent or complete component failures:

■Always use an ESD wrist strap or ankle strap, and verify that it is in direct contact

with your skin.

CAUTION: For safety, periodically check the resistance value of the ESD strap. The

measurement should be in the range of 1 to 10 megaohms.

■When handling any component that is removed from the chassis, verify that the

equipment end of your ESD strap is attached to one of the ESD points on the

chassis, which are shown in Figure 1 and Figure 2.

Figure 1: ESD Point on Front of SRX3400 Services Gateway

Cooling

air exhaust

ESD

point

IOC in

slot 1

SFB

USB

ports

Console

ports

g036000

Slot

number

guide CFM slots

for IOCs

and SPCs

Preventing Electrostatic Discharge Damage to the SRX3400 Services Gateway ■1

Figure 2: ESD Point on Rear of SRX3400 Services Gateway

ESD

point

Power

supplies

Routing Engine

in slot RE0

Chassis

grounding

point

Fan tray

door

Cooling

air inlets

Slot

number

guide

CFM slots

for SPCs

and NPCs

Slot RE1

for SCM

g036104

■Avoid contact between the component and your clothing. ESD voltages emitted

from clothing can still damage components.

■When removing or installing a component, always place it component-side up

on an antistatic surface, in an antistatic card rack, or in an electrostatic bag (see

Figure 3). If you are returning a component, place it in an electrostatic bag before

packing it.

Figure 3: Placing a Component into an Electrostatic Bag

Related Topics SRX3400 Services Gateway General Safety Guidelines and Warnings■

■SRX3400 Services Gateway Definition of Safety Warning Levels

■SRX3400 Services Gateway Fire Safety Requirements and Fire Suppression

Equipment

Published: 2010-04-20

2■Preventing Electrostatic Discharge Damage to the SRX3400 Services Gateway

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