And Eq-66 Boards Replacement - Sony GY-2120WD Maintenance Manual

1-8-5. EX-603 and EQ-66 Boards
Replacement
1. Turn off the power and remove the power cord.
2. Remove the three screws (B4 x 5), then remove the
upper lid. (Refer to section 1-1-1.)
3. Remove the eight screws (B3 x 6), then remove the
rear panel.
4. Disconnect the four connectors (CN1, CN51, CN52
and CN53) on the switching regulator.
5. Remove the two screws (PWH3 x 6), then remove the
switching regulator from the main unit.
Switching regulator
CN53
CN52
CN51
PWH3 x 6
GY-2120WD/WS
Rear panel
B3 x 6
B3 x 6
B3 x 6
B3 x 6
CN1
PWH3 x 6
6. Remove the EQ-66 board.
EQ-66 board
7. Disconnect the four connectors (CN251 to CN254).
8. Remove the four screws (BVTT3 x 6).
BVTT3 x 6
CN252
CN251
CN253
9. Install each board in the main unit in the reverse order
of removal.
1-8. Boards Replacement
BVTT3 x 6
EX-603 board
CN254
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