Dell PowerEdge Rack Enclosure 4820 - Manual (Page 10)

Cable Routing Procedures for Dell™ PowerEdge™ R310 & R410 Systems
Page 8
Figure 9: Removing the CMA Brackets for Shallo w Racks
Section 3: Replacing a Power Supply on a PowerEdge™ R310 or R410 System
With a CMA
1. Remove the tray from underneath the CMA as described in the CMA Installation Instructions
provided with the CMA kit.
2. Swing the CMA into the service position.
3. Disconnect the power cord from the power supply and disengage the strain relief.
4. If the CMA is attached to the left side, both power supplies can be removed without
disconnecting the CMA.
5. If the CMA is attached to the right side and the inner power supply needs to be replaced, the
CMA does not need to be disconnected.
6. If the CMA is attached to the right side and the outer power supply needs to be replaced:
a. Disconnect the inner CMA bracket from the rail as shown in Figure 10.
b. While supporting the CMA with one hand, remove and replace the power supply with
the other hand as shown in Figure 11.
c. Reinstall the inner CMA bracket to reconnect the CMA.
7. After the power supply has been replaced, plug in the power cord, re-engage the strain relief,
replace the CMA support tray, and return the CMA to the closed (retracted) position.