Compaq PORTABLE 286 Maintenance And Service Manual page 77

To replace the power switch filter assembly, reverse Steps 1 through 5.
Chapter 7.9 Controller and Expansion Board Removal and Replacement
Before beginning this procedure, become familiar with the locations of
controller and Controller Board expansion boards and their specific signal
cables, if applicable (Figure 7.9-1).
Fixed Disk Drive Controller Board Removal and Replacement