Juniper EX8200 Series User manual

Removing an AC Power Supply from an EX8200 Switch
The AC power supply in an EX8200 switch is a hot-removable and hot-insertable
field-replaceable unit (FRU). You remove AC power supplies from the front of the
chassis.
CAUTION: Before you remove a power supply, ensure that you have power supplies
sufficient to power the switch left in the chassis. See Calculating Power Requirements
for an EX8208 Switch or Calculating Power Requirements for an EX8216 Switch.
Before you remove an AC power supply from the switch:
■Ensure you understand how to prevent ESD damage. See Prevention of
Electrostatic Discharge Damage on EX Series Switches.
Ensure that you have the following parts and tools available to remove an AC power
supply from an EX8200 switch chassis:
■Electrostatic discharge (ESD) grounding strap
■Phillips (+) screwdriver, number 1
■Replacement power supply or a cover panel for the power supply slot
CAUTION: Do not leave the power supply slot empty for a long time while the switch
is operational. Either replace the power supply promptly or install a cover panel over
the empty slot.
To remove an AC power supply from an EX8200 switch (see Figure 1):
1. Attach the electrostatic discharge (ESD) grounding strap to your bare wrist, and
connect the strap to the ESD point on the chassis.
2. Flip the Enable switch next to the appliance inlet on the power supply to the
Standby position.
3. Disconnect power from the switch by performing one of the two following tasks:
■If the AC power source outlet has a power switch, set it to the OFF position.
■If the AC power source outlet does not have a power switch, gently pull the
male end of the power cord connected to the power source outlet out of the
outlet.
4. Remove the power cord from the AC appliance inlet on the AC power supply
faceplate.
5. 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.
Removing an AC Power Supply from an EX8200 Switch ■1

6. 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. Unscrew the captive screw counterclockwise using the Phillips (+) screwdriver,
number 1.
8. Pull the captive screw away from the faceplate of the power supply to release
the latch.
9. Pull the handle away from the faceplate of the power supply until it is
perpendicular to the faceplate.
10. Taking care not to touch power supply components, 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.
11. If you are not replacing the power supply, install the cover panel over the slot,
using the Phillips (+) screwdriver to tighten the screw on the side of the cover
panel.
Figure 1: Removing an AC Power Supply from an EX8200 Switch
Related Topics Installing an AC Power Supply in an EX8200 Switch■
■AC Power Supply in an EX8200 Switch
Published: 2009-07-15
2■Removing an AC Power Supply from an EX8200 Switch