IBM 7015-R50 Installation And Service Manual page 190

Note: The retainer screw on your right is also one of the retainer screws for attaching the
system interface board in the I/O module.
7. Remove the remaining retainer screw.
Retainer
Screw
Retainer Screw
(Also Used for System
Interface Board)
8. Do the "Front Bezel and Front Access Plate" removal procedure on page 4-15.
9. Loosen the docking screw on the front of the CPU module until the I/O module
disengages.
Front View of
CPU Enclosure
Docking
Screw
4-68
Service Guide