Sony DVS-7200A Maintenance Manual page 33

10. KY-391 or 392 Board (BKDS-7015)
(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) Remove the CPU-246 board. (Refer to "5. CPU-246 Board" in this section.)
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When removing the KY-391 board, it is not necessary to carry out the step (3).
(4) Disconnect the four connectors (CN1 through CN3 and CN13).
(5) Remove the eight screws and the KY-391 or 392 board.
(6) Remove the LE-142 board and the LE-144 board.
(Refer to "19. LE-142 or 143 Board" or "20. LE-144 Board" in this section.)
KY-391 board
PSW3 x 8
PSW3 x 8
(7) Install the KY-391 or 392 board in the reverse order of the procedures (1) through (6).
DVS-7200AE MMP1
CN1
CN3
CN2
PSW3 x 8
PSW3 x 8
CN13
1-2. Control Panel
1-2-5. Installation and Removal of Boards
1-25