IBM 9009-41A Manual page 23

Figure 6. Removing the service access cover
Removing the base function disk drive backplane from the 9009-41A, 9009-41G,
9009-42A, 9009-42G, or 9223-42H system
To remove the base function disk drive backplane from the system, complete the steps in this procedure.
Procedure
1. Ensure that you have the electrostatic discharge (ESD) wrist strap on and that the ESD clip is plugged
into a ground jack or connected to an unpainted metal surface. If not, do so now.
2. Remove the air baffle. For instructions, see Removing the air baffle (www.ibm.com/support/
knowledgecenter/POWER9/p9haj/p9haj_914_924_airbaffleremove.htm).
3. If the system has an RDX drive, complete the following steps to partially remove the RDX docking
station:
a) For a stand-alone system, open the front door.
Insert the front door key into the lock as shown in the following figure. Twist the key to the left
(counterclockwise) to unlock the door. Horizontal is locked; vertical is unlocked. Open the front
door.
Drive backplanes for the 9009-41A, 9009-41G, 9009-42A, 9009-42G, or 9223-42H 9