IBM 3270 Maintenance Manual page 506

2. Slide the system board toward the power
supply until the holes for the two mounting
screws are aligned.
3. Install the two system board mounting screws
s·
4. Install the speaker connector
II.
5. Install the Math Coprocessor
II
(if
removed) (5-700-5).
6. Install the option adapters (5-20-5).
7. Install the diskette-drive signal cable
II
and system board power connectors
m .
8. Install.the cover of the system unit (5-100-3).
9. Connect all cables to the rear of the system
unit.
October 1984 5-100-13