IBM Power System 9040-MR9 Manual page 33

Figure 18. Releasing the blue latch
a) Repeat these steps for the L slide rail, using the clip with the side stamped L facing outward.
5. Complete the following steps to place the system in the service position.
Do not pull out or install any drawer or feature if the rack stabilizer brackets are not attached to the
rack. Do not pull out more than one drawer at a time. The rack might become unstable if you pull out
more than one drawer at a time.
a. If not already removed, remove the shipping screws (A) as shown in the following figure by using a
Phillips screwdriver.
b. Release the side latches (B) by pressing them downward as shown in the following figure.
c. Pull out the system (C) as shown in the following figure.
System backplane for the 9040-MR9 19