Dell PowerEdge Rack Enclosure 4220 - Manual (Page 10)

Cable Routing Procedures for Dell™ PowerEdge™ R510 Systems
Page 8
Section 3: Replacing a Power Supply on a PowerEdge™ R510 System With a CMA
3.1 Replacing a Power Supply with a Left-Side Mounted CMA
1. If the bottom power supply must be replaced, then remove the tray from underneath the CMA as
described in the CMA Installation Instructions provided with the CMA kit. If the top power supply
must be replaced, this step can be skipped.
2. Swing the CMA to its service position.
3. Disconnect the power cord from the power supply and disengage the strain relief.
4. Replace the power supply.
5. Plug in the power cord, re-engage the strain relief, replace the CMA support tray (if it was
removed), and return the CMA to the closed (retracted) position.
3.2 Replacing a Power Supply with a Right-Side Mounted CMA
1. If the bottom power supply must be replaced, then remove the tray from underneath the CMA as
described in the CMA Installation Instructions provided with the CMA kit. If the top power supply
must be replaced, this step can be skipped.
2. Swing the CMA to its service position.
3. Disconnect the inner CMA bracket from the rail as shown in Figure 9.
4. While supporting the CMA with one hand, remove and replace the power supply with the other
hand as shown in Figure 10.
5. Reinstall the inner CMA bracket to reconnect the CMA.
6. Plug in the power cord, re-engage the strain relief, replace the CMA support tray (if it was
removed), and return the CMA to the closed (retracted) position.
Figure 9: Disconnecting the Inner CMA Attachment Bracket