Dell PowerEdge Rack Enclosure 4220 - Manual (Page 9)

Cable Routing Procedures for Dell™ PowerEdge™ R810 Systems
Page 7
Section 3: Replacing a Power Supply on a PowerEdge™ R810 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 power cord from the power supply and disengage the strain relief.
4. Disconnect both CMA attachment housings from the rail as shown in Figure 8.
5. While supporting the CMA with one hand, remove and replace the power supply with the
other hand as shown in Figure 8.
6. Reconnect the CMA attachment housings to the rail.
7. 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 8: Replacing the Power Supply
CMA attachment housings
have been disconnected.