Replacing The Power Supply In The Bottom Slot - Juniper EX4500 Hardware Manual

Figure 56: Connecting the Replacement Power Supply Cord
Retainer
clip
Adjustment
nut
8. To ensure that the replacement power supply is operating normally and both power supplies are
providing redundant power to the switch, verify that both power supply LEDs (see
are lit steadily green
9. To replace the power supply in the bottom slot, go on to
Slot" on page 198.

Replacing the Power Supply in the Bottom Slot

To replace the power supply in the bottom slot of the switch:
1. If you have not already done so, ensure that the EX4500 switch you are working on is operating normally,
with both power supplies turned on, by verifying that the LED on each power supply is lit steadily green
(see Figure 53 on page
2. If you have not already done so, attach the ESD grounding strap to your bare wrist, and connect the
strap to the ESD point on the lower right front of the chassis—or touch the exposed, bare metal of the
switch to ground yourself before handling a component.
3. Remove power from the old power supply in the bottom slot (see Step
in the Top Slot" on page
4. Remove the power cord from the old power supply in the bottom slot (see Step
Power Supply in the Top Slot" on page
5. Remove the bottom old power supply from the switch (see Step
the Top Slot" on page
CAUTION:
switch is operational. Either replace the power supply promptly or install a cover
panel over the empty slot.
Tighten
adjustment
nut.
195).
195).
195).
195).
Do not leave the power supply slot empty for a long time while the
Figure 53 on page
"Replacing the Power Supply in the Bottom
3 in "Replacing the Power Supply
4
5 in "Replacing the Power Supply in
195)
in "Replacing the
198