Removing An Ac Power Supply From An Ex4300 Switch - Juniper EX4300 Series Hardware Manual

Removing a DC Power Supply from an EX4300 Switch | 299
Installing a DC Power Supply in an EX4300 Switch | 301

Removing an AC Power Supply from an EX4300 Switch

Before you remove a power supply from an EX4300 switch, ensure that you have taken the necessary
precautions to prevent electrostatic discharge (ESD) damage (see
Damage
).
Ensure that you have the following parts and tools available to remove a power supply from an EX4300
switch:
• ESD grounding strap
• Phillips (+) screwdriver, number 2 (not provided)
• Antistatic bag or an antistatic mat
• Replacement power supply or a cover panel for the power supply slot
The power supplies in EX4300 switches are hot-removable and hot-insertable field-replaceable units
(FRUs) installed in the rear panel of the switch: You can remove and replace them without powering off
the switch or disrupting switch functions.
CAUTION: We recommend that you install either a replacement power supply or a
cover panel in the empty power supply slot to prevent chassis overheating and dust
accumulation.
NOTE: The power supply slots are at the right end of the rear panel on 24-port and 48-port
switches, and at the left end on 32-port switches.
an AC power supply from 24-port or 48-port switches. The procedure is the same for 32-port
switches.
1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
2. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the
chassis.
Prevention of Electrostatic Discharge
Figure 88 on page 297 shows how to remove
296