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Ensure you understand how to prevent ESD damage. See “Prevention of Electrostatic
Discharge Damage on EX Series Switches” on page 292.
Ensurethat youhavethe followingparts and tools available toinstall a DC powersupply
in an EX8200 switch chassis:
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Electrostatic discharge (ESD) grounding strap
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Phillips (+) screwdriver, number 1
To install a DC power supply in an EX8200 switch (see Figure 53 on page 154):
1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to the ESD point on the chassis.
2. Ifthe powersupplyslot hasa cover panel on it,unscrew the screwon the side of the
cover panel in the counterclockwise direction using the Phillips (+) screwdriver,
number 1, and remove the cover panel. Save the cover panel for later use.
3. Takingcarenottotouchpowersupplycomponents,pins,leads,orsolderconnections,
remove the power supply from its bag.
4. Flip the Enable switch on the power supply to the Standby position.
5. Unscrew the captive screw in the counterclockwise direction using the Phillips (+)
screwdriver,number 1.
6. Pull the captive screw away from the faceplate of the power supply to release the
latch.
7. Pullthe handle awayfrom the faceplateof the power supply until it is perpendicular
to the faceplate.
NOTE: Power supplies can be installed in any slot.Youdo not have toinstall the power
supplies in serial order.
8. Using both hands, place the power supply in the power supply slot on the front of
the switch. Slide the power supply straight into the chassis until the power supply
isfullyseatedintheslot.Ensurethepowersupplyfaceplateisflushwithanyadjacent
power supply faceplates or power supply cover panels.
9. Push the handle towards the faceplate of the power supply until it is flush against
the faceplate.
10. Push the captive screw into the power supply faceplate. Ensure that the screw is
seated inside the corresponding hole on the faceplate.
11. Tighten the captive screw by turning it clockwise using the Phillips (+) screwdriver,
number1. Whenthescrewiscompletelytight,the latchlocksintotheswitchchassis.
ToconnectpowertoaDCpowersupply,see“ConnectingDCPowertoanEX8200Switch”
on page 175
153Copyright©2010, JuniperNetworks, Inc.
Chapter9:Installing SwitchComponents