IBM 704 - Manual (Page 123)

Removing a Microprocessor
If you want to remove a microprocessor from a processor board,
you must remove that processor board from its connector on the
system board. To remove a microprocessor, do the following steps:
1. Before you can access the boards inside the server, you must
remove the metal board-support panel that holds them in place.
Remove the board-support panel:
a. Remove the left side panel 1 .
b. Remove the four screws 2 from the right edge of the
board-support panel. Save the screws for later use.
1
2
c. Open the board-support panel.
d. Remove the board-support panel by pulling the back edge
away from the three slots at the back of the chassis.
e. Store the panel until you are ready to reinstall it.
Chapter 4. Installing Options 105