Sony HDCU-900 Series Installation And Maintenance Manual page 32

1-6. Installing the Optional Boards
Installation Procedure
1. Turn off the power and disconnect the plug from the
outlet.
Rear side
2. Remove the two screws from the slots and remove the
blank panel or the board that is already installed.
n
The top slot at the rear side is used for the SDI-54A
board only. So that any of the option boards cannot be
installed in the top slot.
3. Insert the optional rear side board into the slot of the
removed blank panel and fix it with the screws
removed in step 2.
Optional rear side
board
m
. Regarding the rear side, install the boards starting from
the top slot, one after another. When removing the
boards, start removal from the bottom slot.
. Be sure to attach the supplied blank panel to the slot that
is not used at the rear.
1-24 (E)
Blank panel
B3 x 5
B3 x 5
B3 x 5
B3 x 5
Front side
4. Remove the front panel. (Refer to Section 1-4.)
5. If any circuit board is already installed in the desired
slot, remove it before hand.
6. Insert the optional front side boards into the slots, and
open the levers in the direction of arrow A to lock
them.
n
The top slot on the front is dedicated to the DPR-163
board, and the bottom slot is dedicated to the AT-141
board. So that any of the option boards cannot be
installed in the top and bottom slots of the front.
Optional front side
board
A
Lever
A
Lever
HDCU-900 IMM