Sony MAV-70 Manual page 53

2-5-4. PSW-61 Board
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When the PSW-61 board is replaced, replace a whole
harness (H61) that is connected to PSW-61 board.
1. Disconnect the power cords from the rear panel.
2. Remove the cover. (Refer to Section 2-2-2.)
3. Remove the front panel (lower) and ornamental panel
A. (Refer to Section 2-2-1.)
4. Open the front panel A. (Refer to Section 2-4-2.)
5. Remove the power supply units. (Refer to Section 2-4-
2.)
When there is one power supply, remove the blank
panel. (Refer to Section 2-5-2.)
6. Remove the all HDD units. (Refer to Section 2-4-3.)
7. Remove the front stay. (Refer to Section 2-5-2.)
8. Remove the two power guides. (Refer to Section 2-5-
2.)
9. Remove the IF positioning bracket. (Refer to Section
2-5-2.)
10. Unstick the filter from the front panel A. (Refer to
Section 2-4-5.)
11. Remove the LCD case lid. (Refer to Section 2-5-3.)
12. Disconnect the two connectors (CN1, CN4) of the
harness connected to the DP-269 board. (Refer to
Section 2-5-3.)
13. Remove the DP-269 board. (Refer to Section 2-5-3.)
14. Remove the cable clamp. (Refer to Section 2-5-3.)
15. Remove the PSW-61 board from the front panel A.
(Refer to Section 2-5-3.)
16. Cut the two harness clampers.
PSW-61 board
MAV-70
17. Disconnect the two connectors (CN1, CN10) of the
18. Remove the all optional boards. (Refer to Section 2-5-
19. Remove the four screws (BVTT 3x6) and two screws
20. Pull out the noise filters until the harness is viewed.
21. Remove the four connectors of the harness connected
22. Remove the PSW-61 board connected to the harness
23. For installation, perform the removal procedures in
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Use the commercially available harness clamper .
Harness clampers
harness connected to the AC-188 board .
5.)
(PSW 3x6).
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Be sure not to pull out the harness connected to the
noise filter.
to the noise filters.
(H61).
BVTT 3x6
CN1
CN10
PSW-61 board
reverse order.
2-5. Boards Replacement
Noise filters
PSW 3x6
AC-188 board
2-21 (E)