Replacing The Power Supply In The Top Slot; Figure 52: Verify Green Power Supply Leds For Normal Operation - Juniper EX4500 Hardware Manual

EX4500 Switch Hardware Guide

Replacing the Power Supply in the Top Slot

180
Before installing a component, hold the component in its antistatic bag in one hand
and touch the exposed, bare metal of the switch with the other hand.
Ensure that you have the following parts and tools available to remove and replace the
power supplies in the switch chassis:
ESD grounding strap (not provided)
Two antistatic bags or mats (not provided)
Power supply cover panel to cover the empty power supply slot, if you do not plan to
install a replacement power supply immediately (provided)
To replace both power supplies in an EX4500 switch while the switch is operational,
remove and replace the power supply in the top slot first, and then repeat the procedure
for the power supply in the bottom slot.
NOTE: Each power supply must be connected to a dedicated AC power
source outlet.
Replacing the Power Supply in the Top Slot on page 180
Replacing the Power Supply in the Bottom Slot on page 183
To replace the power supply in the top slot of the switch:
Ensure that the EX4500 switch you are working on is operating normally, with both
1.
power supplies turned on, by verifying that the LED on each power supply is lit steadily
green. See Figure 52 on page

Figure 52: Verify Green Power Supply LEDs for Normal Operation

AC power
supply LEDs
Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
2.
point on the lower right front of the chassis—or touch the exposed, bare metal of the
switch to ground yourself before handling a component.
180.
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