IBM 9009-41A Manual page 97

Figure 74. Removing the disk drive backplane
9. Lift the disk drive backplane out of the chassis.
10. If the removed part is used again, place the part on an electrostatic discharge (ESD) mat.
Replacing the 18-drive expanded function disk drive backplane in the 9009-41A,
9009-41G, 9009-42A, 9009-42G, or 9223-42H system
To replace the 18-drive expanded function disk drive backplane in 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. The chassis has two alignment pins and several brackets (A) to secure the disk drive backplane. Using
the thumbscrews (B), (C), and the alignment pins (A), insert the disk drive backplane as shown in the
following figure, while you ensure that the alignment pins fit through the holes in the disk drive
backplane.
Slide the disk drive backplane to the side in the direction shown so that the disk drive backplane slides
under the tabs in the chassis.
Drive backplanes for the 9009-41A, 9009-41G, 9009-42A, 9009-42G, or 9223-42H 83