Sony DSBK-170 Installation Instructions Manual page 19

5
Holding the levers on both sides of the DEN-11 board,
slowly slide it into place.
When the board is inserted until the levers are aligned with
the board retaining rail, lower the levers slightly to seat the
board firmly, then lower the levers to be flush with the
edge of the board.
Levers
Board retaining rail
(Continued)
19