Bose PACKLITE A1 Manual page 31

DISASSEMBLY PROCEDURES
3. Power Supply / Amplifier PCB Assembly
Removal
3.1 Perform procedure 1.
3.2 Unplug the input / limiter PCB (9) wiring
harnesses from the power supply / amplifier
PCB (8) at J301, J302 and J303.
3.3 Unplug the wiring harnesses at CON300
and CON301 on the power supply / amplifier
PCB assembly.
3.4 Using a Phillips-head screwdriver,
remove the eight screws that secure the
power supply / amplifier PCB assembly to
the lower housing (10). Lift the PCB assem-
bly out of the lower housing.
Re-assembly Notes:
1. Be sure to retain the washers and lock
washers located under seven of the screws
for use during re-assembly.
2. The silver colored screw located near
C223 is used for grounding the PCB assem-
bly to the lower housing. Be sure to use only
the silver colored star washer under it to
ensure a good ground connection.
3. Note the location of the thermal sil-pad (7)
under the power supply / amplifier PCB
assembly. Be sure it is in the proper location
when re-installing the PCB assembly. See
the photo at right.
4. Fan Removal
4.1 Perform procedure 1.
4.2 Unplug the fan assembly (5) wiring
harness at CN106 on the input / limiter PCB
assembly (9).
4.3 Lift the fan assembly out of the upper
housing.
Re-assembly Note: Be sure to note the
orientation of the fan when removing it from
the housing. It will need to be replaced
facing the same direction to ensure that the
outside air is pulled into the amplifier during
operation.
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