Bass Module Procedures - Bose 3-2-1GS Series II Service Manual

Bass Module Procedures

1. Rear Enclosure Removal
1.1 Place the bass module on its side. Using
a phillips-head screwdriver, remove the four
screws that secure the rear enclosure to the
bass module cabinet.
1.2 Lift the rear enclosure partially off of the
bass module.
1.3 Unplug the transformer primary cable at
J5 on the input/output PCB located on the
back of the rear enclosure.
1.4 Unplug the two ribbon cables at J6 and
J7 that run from the input/output PCB to the
main PCB. Lift the rear enclosure away from
the bass module cabinet.
2. Main PCB Removal
2.1 Perform procedure 1.
2.2 Unplug the woofer harness from the
main PCB at J350. This harness plugs into
the connector through the holes in the
bottom of the main PCB.
2.3 Using a phillips-head screwdriver, re-
move the four screws that secure the
heatsink bracket to the heatsink. Lift off the
heatsink bracket.
DISASSEMBLY PROCEDURES
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