Removing The Backplane - Dell MD1420 Hardware Owner's Manual

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and
simple repairs as authorized in your product documentation, or as directed by the online or telephone service and
support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow
the safety instructions that came with the product.

Removing the backplane

1. Turn off the enclosure and disconnect it from the electrical outlet.
2. Disconnect all the cables connected to the enclosure.
3. Remove the hard disk drives. See
4. Remove the EMMs. See
5. Remove the power supply or cooling fan modules. See
6. Remove the control panel. See
7. Remove the screws that secure the EMM or power supply cage to the chassis.
8. Hold the cage removal ring at the bottom center of the enclosure and pull the EMM or power supply cage toward the back of the
chassis.
Figure 22. Removing and installing the EMM or power supply cage
a. EMM or power supply cage
b. screws (6)
9. Lift the EMM or power supply cage away from the chassis.
10. Loosen the captive screw that secures the backplane to the chassis.
11. Remove the screws that secure the backplane and pull the backplane out of the enclosure.
26 Installing enclosure components
Removing a hard disk
Removing an EMM.
Removing the control
drive.
Removing an AC power supply unit or cooling fan
panel.
module.