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Summit Family Switches Hardware Installation Guide
205
Replacing a Summit X650 DC Power Supply
In a redundant power configuration, you can replace one Summit X650 DC PSU without powering
down the switch.
You need the following tools and materials to replace a Summit X650 DC PSU:
● #1 Phillips screwdriver
● Torque screwdriver and wrench or torque driver with attachments for tightening screws and nuts
● ESD-preventive wrist strap
● Thermal protective gloves (required for removal of a PSU)
WARNING!
Be sure to disconnect all power cables before you disconnect the chassis ground wire.
Removing the PSU
To remove an installed Summit X650 DC PSU:
1 De-energize the DC circuit.
2 Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an appropriate
ground point on the rack.
3 Disconnect the DC power cables as follows:
a Slide the cover off the terminal block.
b Loosen the screws that secure the cable terminals to the terminal block.
c Slide the wires out from under the captive washers.
4 Disconnect the ground wire as follows:
a Remove the screw that secures the ground wire to the PSU.
b Move the wire away from the PSU.
5 Push the latching tab to the left as you pull outward on the handle to disengage the PSU internal
connectors (see Figure 173).
Figure 173: Removing a DC PSU
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