Replacing The Main Parts; Switching Regulator; Mechanical Main Unit Assembly - Sony OEP-4 Service Manual

1-5. Replacing the Main Parts

1-5-1. Switching Regulator

1. Remove the top cover. (Refer to Section 1-3-1.)
2. Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the rear panel assembly.
(Refer to Section 1-3-3.)
4. Remove the MA-142G board. (Refer to Section 1-4-1.)
5. Remove the two screws, then remove the shield plate
(A) and protector sheet (A).
6. Disconnect the three harnesses from the connectors on
the switching regulator.
7. Remove the four screws, then remove the switching
regulator.
Required driver
90 mm or more
PS3 x 6
Protector
sheet (A)
Harness
PS3 x 6
Harnesses
8. Attach the switching regulator in the reverse order of
steps 1 to 7.
OEP-4
PS3 x 6
Shield plate (A)
Switching
regulator
PS
3 x 6

1-5-2. Mechanical Main Unit Assembly

1. Remove the top cover. (Refer to Section 1-3-1.)
2. Remove the front panel assembly.
(Refer to Section 1-3-2.)
3. Remove the MA-142G board. (Refer to Section 1-4-1.)
4. Remove the four screws, then remove the chassis stay.
5. Remove the four screws, then remove the top stay (R).
Chassis stay
BVTT
2.6 x 5
Top stay (R)
BVTT
2.6 x 5
BVTT
2.6 x 5
BVTT
2.6 x 5
1-7