3. captive screw (2) 4. rubber cap
5. DC power socket 6. DC wire –48 V
Figure 73. Removing the DC Input Power Wires
1. wire RTN 2. DC power connector
3. captive screw (2) 4. rubber cap
5. DC power socket 6. wire –48 V
Removing a DC power supply unit
NOTE:
For equipment using –(48–60) V DC power supply units (PSUs), a qualified electrician must perform all connections
to DC power and to safety grounds. Do not attempt connecting to DC power or installing grounds yourself. All electrical
wiring must comply with applicable local or national codes and practices. Damage due to servicing that is not authorized by
Dell is not covered by your warranty. Read and follow all safety instructions that came with the product.
CAUTION: The system needs one power supply for normal operation. On power-redundant systems, remove and
replace only one power supply at a time in a system that is powered on.
NOTE: You may have to unlatch and lift the optional cable management arm if it interferes with power supply removal. For
information about the cable management arm, see the rack documentation of your system.
1. Disconnect the power wires from the power source and the connector from the PSU you intend to remove.
2. Disconnect the safety ground wire.
3. Press the release latch and slide the PSU out of the chassis by using the PSU handle.
126
Installing and removing system components
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