Replacing Led-334/335 Boards - Sony MSU-750 Maintenance Manual

1-6. Replacing LED-334/335 Boards

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Refer to section 1-3-1 when installing/removing the flexible card wire.
1. Loosen the setscrews and remove the two knobs (IRIS and MASTER BLACK).
2. Remove the four knobs of the menu operation block.
Knobs (menu operation block)
3. Remove the bottom chassis and switching regulator. (Refer to Section "1-4. Replacing Switching
Regulator.")
4. Disconnect the following eleven connectors from the CPU-286 board. (CN102, CN201, CN202,
CN203, CN302, CN401, CN402, CN403, CN404, CN405 and CN406)
5. Remove the five screws and remove the CPU-286 board.
Wire clamp
MSU-750 MMP2
MASTER BLACK knob
Setscrew
Washer (W6)
M4 x 6
Setscrew
Washer (W6)
M4 x 6
Washers (W4)
CN203
CN401
CN406
PWH3 x 6
CN405
CN404
CN403
CN402
IRIS knob
CN201
CN102
CN302
PWH3 x 6
CN202
CPU-286 board
1-6. Replacing LED-334/335 Boards
1-7 (E)