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NOTE:
The S5048F-ON switch powers up when you connect the cables between the power supply and the power
source.
AC or DC power supply replacement
CAUTION:
Disconnect the power cord before removing the power supplies. Also, disconnect all power cords before servicing.
NOTE:
The PSU slides into the slot smoothly. Do not force a PSU into a slot as this action may damage the PSU or the S5048F-
ON switch.
NOTE:
If a PSU fails, you must replace the entire unit. There are no field serviceable components in the PSU. To request a
hardware replacement, see www.dell.com/support.
NOTE:
If you use a single PSU, install a blank plate in the other PSU slot. If you are only using one power supply, install the power
supply in the first slot, PSU1. Install a blank plate in the second slot, PSU2.
1
Disconnect the power cable from the PSU.
2
Use the grab handle to slide the PSU out of the power supply bay.
3
Use the grab handle on the replacement PSU to slide it into the power supply bay.
4
Attach the power cord to the replacement PSU.
NOTE:
The switch powers up when the cables are connected between the power supply and the power source.
DC power supply to power source connection
Each DC powered switch comes with a set containing a prewired, 3-inch 8 AWG, power supply connector and a four-screw wiring block.
One set is provided for each DC PSU.
Figure 15. DC power connector and wiring block
1
DC wire RTN
3
Captive screws (2)
5
PSU status LED
7
DC wire –48V
30
Power supplies
2
DC power connector
4
Orange tab
6
DC power socket
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