Bose FREESPACE BMA-125 Service Manual page 12

230V DISASSEMBLY/ASSEMBLY PROCEDURES
15. Output Transistor and Heat Sink
Removal
15.1 Remove the two nuts that secure the
heat sinks to the chassis.
15.2 Lift the heat sink up.
15.3 Remove the two screws that secure
the transistor to the heat sink.
15.4 With a pair of pliers, grab onto the
transistor and pull it out of the transistor
socket.
16. Output Transistor and Heat Sink
Replacement
16.1 Push the transistor into the transistor
socket.
Note: Inspect the mylar insulator for
damage. Replace if necessary. Make sure
the transistor and the transistor socket is
flush with the heat sink.
16.2 Replace the two screws that secure
the transistor to the heat sink.
16.3 Lower the heat sink into the chassis
so that the screw holes in the heat sink
align with the screws in the chassis.
16.4 Replace the two screws that secure
the heat sink to the chassis.
17. Fuse replacement
17.1 Use a flat blade screw driver to pry off
the fuse holder located on the AC recep-
tacle.
17.2 Pull the card out to expose the fuse.
Lift the fuse out and replace it with a fuse of
equal value. See the part list for the part
number.
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