Sony DSBK-190 Manuel D'installation page 14

Installation
If this option is installed incorrectly, personal injury or damage
to peripheral items may occur due to fire, shock, or other
accidental circumstances. To avoid such risks, installation
should be performed by qualified service personnel.
To install the DSBK-190 in the DSR-2000/2000P, proceed as
follows.
1
2
14
Caution
Remove the top cover of the DSR-2000/2000P.
Loosen the three screws, and slide the top cover away from
the top retainer and blank panel.
Screw
Top retainer
Remove the board retainer.
Loosen the screw, then raise the board retainer and pull it
out from the board retainer guide.
Screw
Screw
Screw
Board retainer
Blank panel
Board retainer guide