IBM 5150 Hardware Maintenance Manual page 205

Write Protect Switch Assembly Removal
1. Position System Unit Power switch to Off, unplug System Unit
power cord and disconnect all cables from rear of System
Unit.
2. Set Display, Keyboard, and Printer away from System Unit
~
work area.
3. Remove System Unit cover (See page 3-98).
4. Remove Diskette Drive Logic Printed Circuit Board
(See page 3-24).
5. Remove write protect switch assembly.
Write Protect Arm ,,-......
~~,..::....
_ _ Adjustment
Screw
Write Protect
Switch Assembly
Front View
3-30