2. Unplug power cords from the power supplies and disconnect the I/O cables
from the system.
Extend the system from the cabinet
This procedure is used to extend the system from the cabinet so that the system
cover can be removed to access the internal FRU components, or used in removing
the system from the cabinet.
When replacing hot-swappable components, ensure the system cables are long
enough to stay connected while the unit is extended.
Procedure
1. At the front of the cabinet, locate the two rocker switches on left and right side
of the system. Press the top of the rocker switches inward to release the
system from the cabinet.
If the rocker switches do not disengage the system, loosen the screw under
each rocker.
2. Pull the system from the cabinet until the rails lock in the extended position.
Figure 33 Release and extend system from cabinet
Remove the system cover
Before you begin
1. Follow all safety guidelines.
2. Turn off the system, including any attached peripherals.
3. Disconnect the system from the electrical outlet and disconnect the peripherals.
Procedure
1. Using a flat or a Phillips head screwdriver, rotate the latch release lock counter
clockwise to the unlocked position.
2. Lift the latch till the system cover slides back and the tabs on the system cover
disengage from the guide slots on the system.
3. Hold the cover on both sides, and lift the cover away from the system.
Remove and replace assemblies
50 Dell EMC IDPA DP4400 Service Procedures
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