IBM RT PC Options Installation page 81

3. If the drive is to be reinstalled in drive position E, set the adapter to the
side. It will be reinstalled in a later procedure.
4. Remove the cooling fan assembly. See "Cooling Fan Removal" on
page 2-6.
5. Disconnect P13 on the power cable from the 4-pin connector on the
rear of the fixed-disk drive in position C. Disconnect the ground wire
from the ground tab on the drive.
2-40 Options Installation
/
--~
Ground
Tab