Disassembly Procedures - Bose Panaray LT 6403 Manual

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
®
19
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.