The power supplies in EX4100 switches are hot-removable and hot-insertable eld-replaceable units
(FRUs) installed in the rear panel of the switch. If two power supplies are installed, you can remove and
replace them without powering o the switch or disrupng switch funcons.
NOTE: If only one power supply is installed in the switch, you must power o the switch before
removing the power supply.
CAUTION: We recommend that you install either a replacement power supply or a
cover panel in the empty power supply slot to prevent chassis overheang and dust
accumulaon.
To remove an AC power supply from the switch (see Figure 102 on page 186):
1. Place the anstac bag or the anstac mat on a at, stable surface.
2. Aach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
3. If the AC power source outlet has a power switch, set it to the OFF (O) posion.
4. Gently pull out the plug end of the power cord connected to the power source outlet.
5. Remove the power cord from the power supply faceplate by detaching the power cord retainer and
gently pulling out the socket end of the power cord connected to the power supply faceplate.
6. Slide the ejector lever toward the le unl the power supply is unseated.
7. Grasp the power supply handle and pull rmly to slide the power supply halfway out of the chassis.
8. Place one hand under the power supply to support it, and slide it completely out of the chassis.
Take care not to touch power supply components, pins, leads, or solder connecons.
9. Place the power supply in the anstac bag or on the anstac mat placed on a at, stable surface.
10. If you are not replacing the power supply, install the cover panel over the slot.
Figure 102: Remove an AC Power Supply from an EX4100 Switch
186
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