Bose LT 6400 Manuel - Page 19

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CAUTION: The rear of the Panaray

and LT 9403 loudspeakers can become

extremely hot during normal use. Do not

attempt to service the loudspeakers until they

have cooled to room temperature.

Panaray LT 6403 and LT 9403 Full-Range

Loudspeakers

Note: Refer to Figures 5 and 7 for the

following procedures.

1. Grille Removal

1.1 Remove the screws (2) that secure the

grille assembly (1) to the cabinet.

1.2 Lift the grille assembly off of the cabinet.

2. Logo Removal

2.1 Remove the grille using procedure 1

above.

2.2 On the back of the grille, carefully re-

move the slotted washer that retains the

spring and spacer against the back of the

grille. Note the direction the spacer faces.

Slide the spring and spacer off of the logo

post.

3. Input Panel Assembly Removal

3.1 Remove the six screws (5) that secure

the input panel assembly (4) to the cabinet.

Disconnect the cables that plug into the

PCB. Lift out the assembly.

3.2 Unplug the connector at CN3.

4. Crossover PCB Removal

4.1 Remove the sixteen screws that secure

the rear panel to the cabinet. Lift off the rear

panel. Unplug the cable harnesses at JP1

and X1.

4.2 Remove the nine screws that secure the

crossover PCB assembly to the rear panel.

Lift off the crossover PCB assembly.

Disassembly Procedures

LT 6403

5. Audio Transformer Removal

5.1 Remove the sixteen screws that secure

the rear panel to the cabinet. Lift off the rear

panel. Unplug the cable harness at X1.

5.2 Remove the two screws that secure the

audio transformer to the rear panel. Lift off

the audio transformer.

6. High Frequency Compression Driver

Removal

6.1 Remove the sixteen screws that secure

the rear panel to the cabinet. Lift off the rear

panel. Retain the gasket for re-use.

6.2 Remove the four screws that secure the

compression driver mounting plate to the

cabinet. Lift the compression driver out of

the cabinet. Make a note of the wiring con-

figuration, and disconnect the wires from

the compression driver.

6.3 Remove the four screws that secure the

compression driver to the mounting plate.

Lift off the driver.

7. V2 Mid Frequency Driver Assembly

Removal

7.1 Remove the 16 screws securing the

rear panel to the enclosure. Remove the

rear panel.

Re-assembly Note: When re-installing the

rear panel, be sure to torque the screws to

11 to 21 inch lbs.

7.2 Make a note of the wiring connections,

and disconnect the RED (+) and BLUE (-)

wires connected to the V2 driver assembly.

7.3 Remove the four screws that secure the

assembly to the cabinet. These screws are

located at the four corners of the V2 assem-

bly. Do not remove the other screws around

the casting. Carefully lift the assembly out of

the cabinet.