Korg PA 80 User Manual page 285

Fit the assembled Vocal/Guitar Processor Board + Hard Disk
6.
assembly into the instrument. Fix it into its socket using the
previously removed four screws (D).
Finish the assembling fixing the plate (C) with the four
7.
screws (B).
Vocal/Guitar Processor Board (VHG1)
Assembling the board with the HD drive already installed
25-3