Owner manual

Cable Routing Procedures for Dell™ PowerEdge™ R910 Systems
Page 7
Section 3: Replacing a Power Supply on a PowerEdge™ R910 System With a
CMA
NOTE: The steps described below apply to the bottom two power supplies only. The top two power
supplies can be replaced with the CMA in its closed (retracted) position.
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 any of the top
three power supplies 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 any of the top
three power supplies 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.