Juniper EX9253 Hardware Manual page 135

CAUTION: EX9253 switches use either AC or DC power supplies. Do not mix AC and
DC power supplies in a switch.
NOTE: Each AC power supply must be connected to a dedicated AC power source outlet.
To install an AC power supply in an EX9253 switch (see
1. Wrap and fasten one end of the ESD wrist strap around your bare wrist, and connect the other end
of the strap to the ESD point on the switch.
2. If the power supply slot has a cover panel on it, remove the cover panel, and save the cover panel for
later use.
3. Taking care not to touch power supply components, pins, leads, or solder connections, remove the
power supply from its bag by using the handle.
4. Using both hands, hold and slide the AC power supply straight into the chassis until the power supply
is fully seated in the power supply slot. The power supply faceplate must align with the power supply
faceplate or the cover panel installed in the adjacent power supply slot.
Figure 47: Installing an AC Power Supply
5. Press the latch located on the left side of the power supply to slide it into the chassis.
NOTE: If you have a Juniper J-Care service contract, register any addition, change, or upgrade of
hardware components at https:/ /www.juniper.net/customers/support/tools/updateinstallbase/
Figure 47 on page 126):
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