Bose FREESPACE BUSINESS 서비스 매뉴얼 - 페이지 15

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4. Junction Box Cover Replacement

A. Position the junction box cover (8) over the 4

screws (9) still secured to the junction box (7).

Lower the cover into place.

B. Slide the cover until all 4 screws are engaged

with the narrow slot in each screw hole. Secure

the cover to the junction box with the 4 screws.

5. Panel Assembly Removal

A. Remove the mounting hardware (Procedure

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

NOTE: Refer to Figure 4 for Procedures 5 and

6 unless otherwise specified.

B. Remove 14 screws (2) which secure the panel

assembly (1) to the unit.

NOTE: If the panel assembly does not need to

be completely removed,then it may not be

necessary to unhook the connectors as directed

in step C.

C. Unhook connectors J303 (woofer output) and

J101 from the Main PCB Assembly (Figure 6,

Item 13) and connector J502 from the Tone

Control PCB Assembly (24).

D. Carefully lift the panel assembly away from

the unit.

6. Panel Assembly Replacement

A. Lower the panel assembly (1) into position.

B. Plug in connectors J303 (woofer output) and

J101 to the Main PCB Assembly (Figure 6,Item

13) and connector J502 to the Tone Control PCB

Assembly (24) if they were previously

disconnected.

C. Secure the panel assembly to the unit with 14

screws (2).

D. If no further troubleshooting is required,re-

install the junction box cover (Procedure 4) and

the mounting hardware (Procedure 2).

7. Tone Control PCB Assembly Removal

NOTE: Refer to Figure 4 for Procedures 7 and

8 unless otherwise specified.

A. Remove the mounting hardware (Procedure

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

assembly (Procedure 5).

B. Remove the 2 control knobs (21) using either

your fingers or a flat blade screwdriver.

C. Remove the 2 3/8" hex nuts (22) and washers

(23) which secure the PCB (24) to the unit.

D. Push the control knob shafts through the holes

in the unit and carefully lift the PCB away from

the unit.

8. Tone Control PCB Assembly Replacement

A. Slide the control knob shafts through the holes

in the unit. Make sure that the PCB is solder side

up.

B. Secure the PCB (24) to the unit with 2 3/8"

hex nuts (22) and washers (23).

C. Replace the 2 control knobs (21) by pushing in

gently towards the unit. The knobs are keyed and

will only fit one way.

D. If no further troubleshooting is required,re-

install the panel assembly (Procedure 6) ,the

junction box cover (Procedure 4) ,and the

mounting hardware (Procedure 2).

9. Woofer Removal

NOTE: Refer to Figure 4 for Procedures 9 and

10 unless otherwise specified.

A. Remove the mounting hardware (Procedure

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

panel assembly (Procedure 5).

B. Remove the 6 screws (2) which secure the

woofer (19) to the unit, and lift the woofer

carefully away from the unit.