Juniper EX4500 Hardware Manual page 200

To remove a power supply from the switch (see
1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
2. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to
the ESD point on the chassis.
3. Disconnect power from the switch by performing one of the following tasks:
If the AC power source outlet has a power switch, set it to the OFF (0) position.
If the AC power source outlet does not have a power switch, gently pull out the plug end of the
power cord connected to the power source outlet.
4. Turn the adjustment nut of the power cord retainer counterclockwise till you can see the power cord.
Pull the power cord from the slot in the adjustment nut.
5. Remove the socket end of the power cord from the AC appliance inlet on the power supply faceplate.
6. Push the power cord retainer clip to one side of the appliance inlet. Squeeze the two sides of the power
cord retainer clip, and pull the L-shaped ends of the clip from the holes on each side of the AC appliance
inlet to completely remove the power retainer clip.
7. Push the ejector lever until the power supply is unseated.
8. Grasp the power supply handle and pull firmly to slide the power supply halfway out of the chassis.
9. Taking care not to touch power supply pins, leads, or solder connections, place one hand under the
power supply to support it. Grasp the power supply handle with your other hand and pull the power
supply completely out of the chassis.
10. Place the power supply in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
11. If you are not replacing the power supply, install the cover panel over the slot.
Figure 57 on page 201):
200