IBM RT PC Options Installation page 19

Removing the Covers From the System Units
To remove the covers from the system unit, follow the instructions under
either "mM 6150 System Unit" or "IBM 6151 System Unit" on page 1-10,
whichever applies.
Note: Do not operate the system unit with the covers removed. Operating
with the covers on ensures adequate cooling of the components.
mM 6150 System Unit
You do not need any tools to remove the covers of the system unit.
Note: You might find this task easier if you put the unit on a sturdy table.
CAUTION
This device is heavy. Three or more people should lift the system unit,
which weighs up to 42 kg (92 Ib). Use a dolly if possible.
Do the following to remove the IBM 6150 covers:
1. Turn the system off.
;,~
On
~
I
Off
1-4
Options Installation