Epson Equity 286 PLUS - Manual (Page 169)

6. The subassembly is the large metal casing enclosing the
horizontal drive bays and the power supply, as shown below.
To remove the subassembly, first lift it up from the front
only. Place your thumbs under the diskette drive and grasp
the top edge of the computer with the rest of your fingers, as
shown in the next illustration. (If you have a diskette drive
installed in the lower horizontal drive bay, place your
thumbs underneath that drive instead.)
B-30 Installing and Removing Disk Drives