Bose AM-30P Manual de serviço - Página 23

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DISASSEMBLY/ASSEMBLY PROCEDURES

Note: Numbers in parentheses correspond

to the callouts in the Figures referred to in

the following procedures.

2. Cover Replacement

2.1 Place the cover (1) over the module

assembly (18). Align the cover so that the

Main PCB input and output connectors are

inserted into the holes of the cover. Refer to

Figure 14.

2.2 Rotate the tab of the cover latch out

from the enclosure. Refer to Figure 13 and

15.

2.3 Slide the cover over the base-plate (4)

(refer to Figure 16.) until the back of the

cover snaps over the base-plate tabs.

Refer to Figures 12 and 13.

2.4 Use a flat-head screwdriver or scribe to

rotate (to the left) the cover latch tab (3)

back into the enclosure.

2.5 Attach the two tone control knobs (2)

by pushing them in towards the module.

They are keyed and will only fit one way.

Refer to Figure 14.

3. Main PCB Assembly Removal

Note: Refer to Figures 14 and 16 for this

procedure.

3.1 Perform procedure 1.

3.2 Remove the two screws (7) securing

the main PCB (5) to the adapter bracket

(6).

3.3 Disconnect the transformer's 5-pin

connector from J7, the 8-pin cable from the

amplifier, and the flat ribbon cable (8) from

connector J8 on the main PCB.

3.4 Release the main PCB (5) from the

four snaps of the adapter bracket (6).

4. Main PCB Assembly Replacement

4.1 Place the main PCB (5) onto the

adapter bracket (6) component side down.

The J5, J9, and J11 input and output

connectors should be facing the label side

of the module.

4.2 Press the main PCB into the adapter

bracket's (6) four snaps.

4.3 Secure the main PCB to the adapter

bracket by tightening two screws (7).

4.4 Connect the transformer's 5-pin cable

to J7, connect the 8-pin cable from the

amplifier's PCB to J10, and the flat ribbon

cable (8) to J8 on the main PCB.

4.5 Perform procedure 2.

5. Amplifier PCB Removal

5.1 Perform procedure 3.

5.2 Remove four silver screws (7) and

eight black screws (17) securing the

adapter bracket (6) to the base plate (4).

Lift the bracket away from the enclosure.

5.3 Disconnect the transformer's 5-pin

cable from the amplifier PCB's J1 connec-

tor. Disconnect the woofer harness connec-

tor (9) from the amplifier PCB's J3 connec-

tor. Disconnect the flat ribbon cable (8)

from the amplifier PCB's J2 connector.