Replacing The Cnb-21G Board - Sony HDCU3300 Maintenance Manual

12. Disconnect the harness from the connector CN33 on
the MB-1073 board.
13. Remove the eight screws and remove the MB-1073
board.
CN33/
MB-1073 board
14. Install the MB-1073 board by reversing the steps of
removal.
2-12 (E)
Fan harness
(DC fan: Side)
Screws
(PSW3 x 6)
MB-1073
board

2-1-9. Replacing the CNB-21G Board

1. Remove the VIF-34G board and ADO-10 board.
(Refer to steps 1 to 6 of Section 2-1-8.)
2. Remove the three screws and remove the rear board
fixing plate.
3. Remove the ten hexagonal screws and remove the
CNB-21G board.
CNB-21G board
Hexagonal screws
4. Install the CNB-21G board by reversing the steps of
removal.
Screws
(B3 x 5)
Rear board
fixing plate
HDCU3300/MM (J, E)