52
Figure 46 Removing mounting brackets (7503)
4.
Install the new mounting brackets. For more information about how to install mounting brackets,
see "Installing FRUs."
5.
Cooperate with one or more people to push the chassis back to the rack, and fasten the screws
to secure the chassis to the rack. For more information, see "Installing the switch."
Replacing a power supply
WARNING!
•
An AC power supply and a DC power supply cannot be installed on the same 7500 switch, and power
supplies of different models cannot be installed on the same 7500 switch. When you use two power
supplies to supply power, and the power supplies to be replaced are of different models, power off the
switch before replacement to avoid damage to the switch.
•
When you use two power supplies to supply power to the switch, make sure each power supply has a
separate circuit breaker. Before replacing a power supply, turn off the circuit breaker on the power supply.
If you use a PSR650-A/PSR650-D power supply together with a PWR-SPA power adapter, when you
replace the power supply, you need to remove the power adapter.
Figure 47 Power supply removal flow
Figure 48 Power supply installation flow
To replace a power supply:
1.
Prepare an antistatic mat to place the removed power supply.
2.
Wear an ESD wrist strap and make sure it has a good skin contact and is reliably grounded. For
more information, see "Installing FRUs."
