Figure 49. Assembling the DC Input Power Wires
1. DC power socket
2. rubber cap
3. captive screws (2)
4. DC power connector
5. wire –48 V
6. wire RTN
7. grounding wire
Removing A DC Power Supply
WARNING: For equipment using –(48–60) V DC power supplies, 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 requires 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 system’s rack documentation.
1. Disconnect the power wires from the power source and the connector from the power supply you intend to
remove.
2. Disconnect the safety ground wire.
3. Press the release latch and slide the power supply out of the chassis.
89
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