Juniper EX4500 Hardware Manual page 196

a. Identify the AC power source outlet that is powering the old power supply.
b. If the AC power source outlet has an on/off switch, set it to the OFF (0) position.
c. Gently pull the plug end of the power cord for the old power supply out of the AC power source
outlet.
4. To remove the power supply cord from the old power supply:
a. On the power supply, turn the adjustment nut of the power cord retainer clockwise until you can
see the power cord.
b. Pull the power cord out of the slot in the adjustment nut.
c. Unplug the power cord from the AC appliance inlet on the power supply. Save the cord.
d. Remove the power cord retainer clip by pushing it to one side, squeezing both sides of the clip, and
pulling it completely out of the power supply. Save the clip.
5. To remove the old power supply from the switch (see
a. Unseat the power supply by pressing the orange or green ejector lever next to the AC appliance
inlet.
b. Grasp the power supply handle and pull firmly, keeping one hand under the power supply to support
it as you slide it out of the chassis.
CAUTION:
switch is operational. Either replace the power supply promptly or install a cover
panel over the empty slot.
c. Place the old power supply in an antistatic bag or on an antistatic mat.
Figure 54: Removing an AC Power Supply from an EX4500 Switch
Ejector
lever
6. To install the replacement power supply in the switch (see
Figure 54 on page
Do not leave the power supply slot empty for a long time while the
196):
Figure 55 on page 197):
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