Dell PowerEdge Rack Enclosure 4820 - Manual (Page 8)

Cabling the Dell™ PowerEdge™ R710
Page 6
2. Using the hook and loop straps supplied with the rail kit, bundle the cables and secure them to either the left
rail or right rail CMA attachment brackets as described in the Rack Installation Guide. See Figure 6 for an
example of power cables secured to the right CMA bracket and data cables secured to the left CMA bracket.
3. It is recommended that the cables be secured to the outer brackets, but cables may be secured to the inner
brackets if desired.
Figure 6: Cable Routing Without a CMA
Replacing a Power Supply on a PowerEdge R710 with CMA
1. Remove the tray from under 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. Remove and replace the power supply
a. If the CMA is attached to the right side and the outer power supply needs to be replaced, the inner
CMA attachment housing will need to be disconnected. While supporting the CMA with one hand,
remove and replace the power supply with the other hand as shown in Figure 7.
b. 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.
c. If the CMA is attached to the left side, both power supplies can be removed without disconnecting
the CMA.
5. Plug in the power cord.
6. Re‐engage the strain relief.
7. Replace the CMA support tray.
8. Return the CMA to the closed (retracted) position.