IBM RT User's Setup Manual page 189

2-14 Options Installation
Warning: Follow
a l l
Covers from the System U nits" on page 1-4 before installing
the drive in position C.
1. Remove the cooling fan assembly. Refer to "Cooling Fan
Removal" on page 2-5.
2. Use the following illustration to identify which drive you are
installing.
Note: IBM 310 megabyte fixed-disk drives may look like either
of the bottom two examples below.
instructions under "Removing the
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