IBM RT PC Options Installation page 229

• On the IBM 6151 system unit, do not remove the cables. Slide
the cables into the slots in the cover.
a. Insert the lower hooks into the holes in the frame.
b. Push down on the back cover.
c. Insert the clips on the system unit into the loops on the
cover.
Warning: It is recommended that 75 mm (3 inches)
minimum clearance be provided between the IBM
6151 system unit cover louvers and adjacent walls or
obstructions to ensure adequate cooling.
CAUTION
Devices have electrical cables and plugs designed for
safety. Plug all devices only into grounded electrical
outlets to avoid possible electrical shock. Refer to "Safety
Notice Translations" on page iii.
4. Connect all the power cables to grounded electrical outlets.
5. Begin the checklist on the next page.
Section 9. Checking Out the Option Installation 9-5