Replacing The Main Parts; Power Unit/Dc Fan (For Power Supply) - Sony FWD-50PX1 Service Manual

1-4. Replacing the Main Parts

1-4-1. Power Unit/DC Fan (For Power Supply)

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When attaching the DC fan, make sure that the orientation
of imprinting is correct.
1. Remove the rear cover assembly.
(Refer to Section 1-2-1.)
2. Disconnect the nine harnesses from the connectors on
the power unit.
3. Remove the bolt (M8 x 16) and four screws (PSW3 x
6), then remove the QB block assembly.
4. Remove the four connectors [A].
5. Remove the three connectors [B].
6. Disconnect the three harnesses from the connectors on
the interface board.
7. Disconnect the harness from the connector on the SP
board.
M8 x 16
PSW
3 x 6
Connector [B]
Conductive
cushion
Connectors [A]
FWD-50PX1
QB block assembly
Connectors [B]
Harness
SP board
Harness
Harnesses
Interface board
8. Remove the harness from the four purse locks.
9. Remove the four screws, then remove the K board
bracket assembly.
10. Remove the four screws (BVTT3 x 6), then remove
the G bracket.
11. Remove the two screws (PSW4 x 25), then remove
the DC fan.
12. Remove the four screws (PSW4 x 35), then remove
the two DC fans.
13. Remove the seven screws, then remove the power unit.
Power unit
Imprinting
DC fan
PSW
4 x 25
G bracket
BVTT
3 x 8
K board bracket
assembly
Conductive cushion
14. Attach the power unit and DC fan in the reverse order
of steps 1 to 13.
PSW
3 x 6
Imprinting
Purse lock
DC fan
PSW
4 x 35
PSW
3 x 6
DC fan
Purse
locks
1-9