IBM 9080-M9S Manual page 583

a. Remove the white plastic lock (A) from the plug housing.
Figure 500. Removing the UPIC cable lock
b. Push down on the blue cable latch (B) and pull out the UPIC cable from the system control unit.
Figure 501. Removing the UPIC cable from the system control unit
6. Place your fingers on the indentations located on both sides of the cover (A) and pull the cover away
from the system as shown in the following figure.
Service processor cards 577