Bose FREESPACE BUSINESS Service Manual - Page 16

Browse online or download pdf Service Manual for Media Converter Bose FREESPACE BUSINESS. Bose FREESPACE BUSINESS 50 pages.
Also for Bose FREESPACE BUSINESS: Service Manual (34 pages)

Print Page

10. Woofer Replacement

A. Cut the wires connected to the woofer

terminals as close to the terminals as possible.

(These wires are the woofer connection cable

(20)).

B. Strip the ends of the cable and connect to the

replacement woofer (19). Make sure that the red

wire is connected to the positive (+) terminal and

the black wire is connected to the negative (-)

terminal.

C. Secure the woofer to the unit using 6 screws

(2).

D. Re-connect the woofer connection cable (20)

to the Main PCB Assembly (Figure 6,Item 13)-

connector J303. Make sure all other connections

to the appropriate PCBs are restored. Repeat the

woofer test procedures.

E. If no further troubleshooting is required, re-

install the panel assembly (Procedure 6),junction

box cover (Procedure 4),and the mounting

hardware (Procedure 2).

11. Main PCB (Amplifier) Assembly Removal

NOTE: Refer to Figure 6 for Procedures 11 and

12 unless otherwise specified.

A. Remove the mounting hardware (Procedure

1),junction box cover (Procedure 3),and the

panel assembly (Procedure 5).

B. Remove 9 screws (14) which secure the PCB

(13) to the rear panel (3).

C. Remove 4 screws (4) which secure the

heatsink couplers to the rear panel.

12. Main PCB (Amplifier) Assembly Replacement

A. Secure the 2 heatsink couplers to the rear

panel (3) with 4 screws (4).

B. Secure the PCB to the rear panel (3) with 9

screws (14).

NOTE: If no further troubleshooting is

required,restore any connections that may have

been desoldered or disconnected.

C. Replace the panel assembly (Procedure

6),junction box cover (Procedure 4),and

mounting hardware (Procedure 2).

13. I/O PCB Assembly Removal

NOTE: Refer to Figures 6 and 9 for Procedures

13 and 14 unless otherwise specified.

A. Remove the mounting hardware (Procedure

1),junction box cover (Procedure 3), and panel

assembly (Procedure 5).

B. Remove the 2 11/32" nuts (Figure 6,Item 12)

that secure the PCB (Figure 6,Item 11) to the

rear panel (Figure 6,Item 3). Lift the PCB

carefully away from the panel.

NOTE: Unhook connectors P1 through P4 only if

necessary.

C. The barrier strip connector (Figure 9,Item 3)

is soldered to the PCB. Desolder the 16

connections.

NOTE: If the barrier strip connector needs to be

replaced, remove the 4 screws (Figure 9,Item 4)

which secure it to the I/O plate (Figure 9,Item 1).

D. Lift the PCB carefully away from the I/O plate.

14. I/O PCB Assembly Replacement

A. Align the PCB (Figure 6,Item 11) and I/O

plate (Figure 9,Item 1). The shaft of

potentiometer R8 fits through a hole in the plate.

NOTE: If the barrier strip connector (Figure

9,Item 3) was replaced,proceed as follows: Align

the I/O plate gasket (Figure 9,Item 2) with the

I/O plate,and then secure the connector to the

plate with 4 screws (Figure 9,Item 4).

B. The barrier strip connector needs to be

soldered to the PCB. Solder all 16 connections

to the PCB.