Ac-188 Board - Sony MAV-70 Manual

2-5-6. MB-755 Board
1. Remove the MB board assembly. (Refer to Section 2-
5-5.)
2. Disconnect the connectors (CN341, CN342) of the
harnesses connected to MB-755 board.
3. Remove the MB-755 board from the MB-756 board.
CN342
CN341
MB-755 board
4. Replace the MB-755 board and perform the removal
procedures in reverse order.
n
When the MB-755 board is connected to the MB-756
board, be sure to connect an edge on each connector
securely.
MAV-70

2-5-7. AC-188 Board

1. Remove the MB board assembly. (Refer to Section 2-
5-5.)
2. Remove the connectors (CN4 to CN8) of the harnesses
connected to the AC-188 board.
3. Remove the three screws (PSW3x8) and eleven
screws (PSW 3x6), then remove the AC-188 board.
AC-188
board
PSW 3x6
MB-756 board
4. Replace the AC-188 board and perform the removal
procedures in reverse order.
PSW 3x6
PSW 3x8
CN7
CN8
*1
CN5
CN6
*1
PSW 3x6
AC-188 board
MB-755 board
2-5. Boards Replacement
CN4
PSW 3x6
MB-756 board
2-23 (E)