And If-682/683 Board Replacement - Sony GY-2120WD Maintenance Manual

1-8. Boards Replacement
1-8-1. MA-83, MEM-83 and IF-682/683 Board
Replacement
1. Turn off the power and remove the power cord.
2. Put the unit on its side down, remove the four screws
(PWH3 x 6), then remove the bottom plate. (Refer to
section 1-1-1.)
3. Remove the two screws (PWH3 x 6), then remove the
frame(R).
PWH3 x 6
PWH3 x 6
PWH3 x 6
Bottom plate
PWH3 x 6
4. Remove the two screws (B3 x 5) and four screws
(PWH3 x 6) and pull out the MA-83 board.
At that time, slide the MA-83 board toward the front
panel, then take out it in the direction indicated by the
arrow.
PWH3 x 6
PWH3 x 6
PWH3 x 6
PWH3 x 6
MA-83 board
1-24
Rear panel
PWH3 x 6
PWH3 x 6
Frame (R)
Rear panel
B3 x 5
B3 x 5
5. Disconnect the eight connectors (CN1, CN6, CN100,
CN101, CN103, CN108, CN251 and CN252).
CN100
CN101
CN1
MA-83 board
CN108
6. Remove the MEM-83 board on the MA-83 board.
7. Disconnect one connector (CN103 on the IF-682/683
board).
8. Remove the two screws (PWH3 x 6), then remove the
IF-682/683 board.
IF-682/683 board
MEM-83 board
9. Install each board in the main unit in the reverse order
of removal.
CN251
CN6
CN252
CN103
CN103
PWH3 x 6
PWH
3 x 6
MA-83 board
GY-2120WD/WS