Sony DVS-7200A Maintenance Manual page 41

18. KY-329 Board (BKDS-7031)
(1) Open the panel. (Refer to the section 1-2-1.)
(2) Turn off the power switch in the control panel. (Refer to the section 1-2-2.)
(3) When removing the KY-329 board with installed to the adaptor box (BKDS-7075), remove the two
screws and the AD panel. (Refer to "2. Adaptor Box" in the section 1-2-3.)
(4) Turn the ball retainer counter-clockwise to release a lock.
(5) Push up the track ball from the hole on the KY-329 board and remove the track ball and ball retainer.
(6) Disconnect the three connectors (CN1 through CN3).
(7) Remove the eight screws and the KY-329 board.
(8) Remove the ring.
PSW3 x 8
PSW3 x 8
(9) Install the KY-329 board in the reverse order of the procedures (6) through (8).
(10)Install the track ball and ball retainer.
(11)Turn the ball retainer clockwise to lock.
DVS-7200AE MMP1
KY-329 board
CN1
PSW3 x 8
CN3
PSW3 x 8
CN2
Ball retainer
Track ball
AD panel
Ring
1-2. Control Panel
1-2-5. Installation and Removal of Boards
1-33