Bose Acoustimass 3 Series Service-Handbuch - Seite 14
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AM-3P DISASSEMBLY/ ASSEMBLY PROCEDURES
Module Procedures
1.Cover Removal
NOTE: Refer to Figures 5 and 6 for an exploded
view of the module. Certain parts will be referred
to in these procedures. The item number which
corresponds to the part will be enclosed in
parentheses-i.e.-heatsink (9).
A. Remove the cover cap (1) either by using the
flat edge of a screwdriver or your fingers. Find
the recess on one side of the cap and lift the cap
up and away from the cover (3).
B. Remove the screw (2) located under the cover
cap.
C. Pull the 3 (friction fit) control knobs (4) directly
out from the module.
D. Stick your fingers into the control knob holes.
Swivel the cover carefully away from the
connector panel and pull it away from the
module.
2. Cover Replacement
A. Hook the cover (3) into place by slanting the
cover slightly forward (with connector panel
facing you) and aligning the appropriate holes
with the connector panel.
B. Snap the cover into place.
C. Replace the 3 control knobs (4) by pushing
them in towards the module.They are keyed and
will only fit one way.
D. Secure the cover to the module with 1 screw
(2).
E. Hook the cover cap (1) into place. The
notched edge must align with the module's label
side.
3. EQ PCB Assembly Removal
A. Remove 1 screw (6) which secures the PCB
(5) to the adapter bracket (8).
NOTE: The connector gasket (7) has a light
adhesive backing. Be careful not to tear it during
removal.
B. Pull the connector gasket carefully away from
the connector panel.
C. Release the PCB from the 4 adapter bracket
snaps (not shown),one edge at a time.
D. Unplug the flat,16-pin cable (13) which is
connected to the Amplifier PCB (11).
NOTE: The J5 connector pins fit snugly into the
mating connector housing. Take care when
attempting to unhook this connector.
E. Disconnect the 5-pin connector housing, J5,
(which is connected to the transformer
assembly's (18) primary side),by pulling the PCB
carefully up from the unit. Unhook the connector
housing from the slot on the adapter bracket.
4. EQ PCB Assembly Replacement
A. Hook the J5 connector housing into the slot on
the adapter bracket (8).
NOTE: Connector J5 has a unique keying feature
and can only be re-connected one way.
B. Lower the PCB (5),solder side up,into position.
The PCB's connector panel must align with the
module's label side. Make sure that the pins on
connector J5 line up with its mating connector
housing (transformer primary wires).
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