Remove bottom cable management arm (CMA)

Use this information to remove the bottom cable management arm (CMA).

About this task

S033

CAUTION

Hazardous energy present. Voltages with hazardous energy might cause heating when shorted with metal, which might result in spattered metal, burns, or both.

S014

CAUTION

Hazardous voltage, current, and energy levels might be present. Only a qualified service technician is authorized to remove the covers where the label is attached.

Attention

• Read Installation Guidelines and Safety inspection checklist to ensure that you work safely.

• Power off the server and peripheral devices and disconnect the power cords and all external cables. See Power off the server.

• Prevent exposure to static electricity, which might lead to system halt and loss of data, by keeping static-sensitive components in their static-protective packages until installation, and handling these devices with an electrostatic-discharge wrist strap or other grounding systems.

Procedure

1. If the server is installed in a rack, remove the server from the rack. See Remove the server from the rack.
2. Remove the rear top cover. See Remove the rear top cover.
3. Remove the front top cover.
   Figure 1. Top cover removal
   

   

   
   
   1. Use a screwdriver to remove the screws that locks the front top cover.
   2. Lift the front cover up and remove it.
4. Remove riser 1 and 2 assemblies. See Riser card and PCIe adapter replacement.
5. Remove the air baffle. See Remove the air baffle.
6. Pull out the front drive trays steadily to get access to top and middle CMAs.
   Figure 2. Extending top, middle and bottom CMAs
   

   

   
   
   1. Pull out bottom CMA first.
   2. Pull out middle CMA next.
   3. Pull out top CMA.
7. Disconnect all cables that go through the CMAs to be removed. For more details about the cable routing, see Cable routing for front backplane power and Cable routing for front backplane signals.
8. Remove top CMA with cables attached.
   Figure 3. Removing top CMA
   

   

   
   
   1. Use a screwdriver to remove the screws that lock top CMA.
   2. Lift the top CMA and remove it.
9. Remove front drives from the top drive tray. For front drive removal, see Remove a 3.5-inch hot-swap front drive.
10. Remove the top drive tray to gain access to middle CMA.
    Figure 4. Removing top drive tray
    

    

    
    
    1. Press the latches on both sides to unlock the tray.
    2. Pull out the top tray.
11. Remove middle CMA with cables attached.
    Figure 5. Removing middle CMA
    

    

    
    
    1. Use a screwdriver to remove the screw that locks the middle CMA.
    2. Lift the middle CMA and remove it.
12. Remove front drives from the middle drive tray. For front drive removal, see Remove a 3.5-inch hot-swap front drive.
13. Remove the middle drive tray to gain access to bottom CMA.
    Figure 6. Removing middle drive tray
    

    

    
    
    1. Press the latches on both sides to unlock the tray.
    2. Pull out the middle tray.
14. Remove the bottom CMA with cables attached.
    Figure 7. Removing bottom CMA
    

    

    
    
    1. Use a screwdriver to remove the screw that locks the bottom CMA.
    2. Lift the bottom CMA and remove it.