Replacing The Ethernet Switch; Removing The Ethernet Switch: Image - IBM DR550 Problem Determination And Service Manual

Ethernet switch power problem
Each Ethernet switch receives power from one power control assembly (PCA)
outlet, outlet J7. The upper (SW1) Ethernet switch obtains its power from the PCA
which is located on the right side of the machine. The lower (SW2) Ethernet switch
obtains its power from the PCA located on the left side of the machine.
1. Locate the Ethernet switch that is failing by observing if the Ethernet switch
2. Ensure that the each end of the Ethernet switch power cord is properly
3. At the failing Ethernet switch, unplug the input power cord.
4. Remove the Ethernet switch from the rack by removing one screw from each
5. Ensure the short power cord that goes from the sheet metal bracket to the
6. If the cord is not properly plugged, re-plug it and slide the Ethernet switch

Replacing the Ethernet switch

Remove the Ethernet switch
To remove the old Ethernet switch do the following:
1. Mark all Ethernet cables with the Ethernet port number it is plugged into to
2. Unplug the Ethernet power input cords.
3. Unplug all Ethernet cables.
4. Remove the Ethernet switch from the rack by removing one screw from each
Figure 15. Removing the Ethernet switch: image 1
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DR550 Version 4.5 Problem Determination and Service Guide
power LED is on or off.
If the Ethernet switch power LED is on, there is not a power problem with the
Ethernet switch. If the LED is off, continue to step 2.
plugged into the failing Ethernet switch and the PCA, outlet J7.
If either end of the power cable is not plugged properly, re-plug the cord and
make sure that the Ethernet switch power LED is on. If the Ethernet power
LED is off, continue to step 3
end of the Ethernet switch and partially slide out the Ethernet switch.
power connector on the rear of the Ethernet switch is properly plugged.
back into the rack, secure the Ethernet switch to the rack with the screws that
were previously removed, and re-plug the Ethernet input power cord and make
sure that the Ethernet power LED is on. If the Ethernet power LED is off, the
Ethernet switch needs to be replaced. See "Replacing the Ethernet switch."
assist with re-plugging these cables.
end of the Ethernet switch and slide out the Ethernet switch from the rack.