Juniper-networks J4350 Manual de usuario descargar pdf (Pagina 178)

J4350 and J6350 Services Router Getting Started Guide

1. Take the following steps if you have not already don e so:

a. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist

and connect the strap to the ESD point on the chassis, or to an outside

ESD point if th

e router is discon nected from earth ground. For more

information about ESD, see the Getting Started Guide for your router.

b. Press and r

elease the p ower button to power off the router. Wait for

the

POWER LED to turn off.

c. Unplug th

e power cord or cable from the power source receptacle.

d. Remove the screws from the sides and top of t he chassis that secure

the cover to

the chassis.

e. Slidethecoveroffthechassis.

2. Remove the DRAM module from its electrostatic b ag.

3. To open the

empty DRAM socket, press the plastic ejectors on both sides

(see F igu re 4 6) .

4. Grasp t he D

RAM module by the edges, being careful not to touch any ele ctrica l

components.

5. Pressing f

irmly on both ends, push the module into the so cket until the ejectors

click into the closed po sition (see F igu re 46).

6. Slide the

cover onto the chassis.

7. Replace and tighten the screws on the sides and top of the chassis that secure

the cover

to the chassis.

8. Replace the power cord o r cable.

9. Press and release t he power button to power on the router. Verify that the

POWER LED lights steadily after you press the power button.

10. To view the DRAM configuration and verify that it was installed correctly,

issue the

show chassis routing-engine command, described in the JUNOS System

Basics an

d Services Command Reference. Thiscommandshowsthetotal

memory installed.

Replacing Power System Components

The power cords on all Services Routers are replaceable.

You can replace AC or DC p ower supplies in any Services Router. You can also add

a second power supply to the J6350 Services Router that is of the sam e type

as the fi

rst (either AC or DC).

The powe

rsuppliesarelocatedattherightrearofthechassis(seeFigure3and

Figure 5). Each power supply provides power to all components in the router. The

158 Replacing Hardware Components

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