IBM Power System System E950 Manual page 53

Figure 26. PCIe adapter slot and LED locations in a 9040-MR9 system
3. Use the service indicator light-emitting diodes (LEDs) to help identify the part. For instructions, see
Identifying a part (www.ibm.com/support/knowledgecenter/POWER9/p9haj/sal.htm).
4. If applicable, open the rack door at the rear of the system.
5. Physically verify that the slot you identified is where you want to remove the adapter.
• Use the blue identify LED on the enclosure to locate the system. Ensure that the serial number of
the system matches the serial number to be serviced.
• Look for a flashing amber LED, which identifies the slot that was selected by using the identify
function.
6. If you have not yet recorded the PCIe slot details, record the slot number and location of each
adapter that is being removed.
Note: Adapter slots are numbered on the rear of the system.
7. Stop the system. For instructions, see Stopping a system (www.ibm.com/support/knowledgecenter/
POWER9/p9haj/crustopsys.htm).
8. Label and disconnect the power cords from the system unit as shown in the following figure.
Notes:
• This system might be equipped with two or more power supplies. If the removing and replacing
procedures require the system power to be turned off, ensure that all power sources to the system
are disconnected.
Installing, removing, and replacing PCIe adapters in the 9040-MR9 system 39