Bose 1800-V Manual page 21

5.3 Unsnap the Regulator Board from the nylon
standoffs mounted on the Power Supply Board.
This will also disengage the Regulator Board
from the Power Supply's J1 connector.
6. Regulator Board Replacement
NOTE: Refer to Figure 12 for this procedure.
6.1 Line up and insert the pins of the Regulator
Board's (5) J1 connector (solder side) into the
Power Supply's (7) J1 connector.
6.2 Carefully line up the holes of the Regulator
Board (8) with the nylon standoffs mounted on
the Power Supply Board. Snap three corners of
the board onto each nylon standoff.
6.3 Connect the following cables:
NOTE: Refer to the Wiring Diagrams (Figures 21
and 22) for the proper connectivity.
Connect the cables from the Line Cord (31) (for
240V- Line cord and ground) to the Line Filters
terminals (10). Refer to Figure 12 for 100V and
120V units and Figure 11 for 240V units.
Connect the cables to Power Supply Board (7)
terminals, WL1-WL3 and WL5-WL7. These
terminals are directly over the Regulator Board.
6.4 Return the cover (1) to the chassis (2), See
Procedure 2.
7. Power or Sequence Switch Removal
NOTE: Refer to Figure 12 for 100V and 120V
units and Figure 11 for 240V units.
7.1 Remove the cover (1), see Procedure 1.
7.2 Unsolder the wires from the Power Switch
Board's (9) E1-E3 terminals.
7.3 Unsolder the Power Switch Board from the
switch.
7.4 Push the switch through the front of the
chassis panel.
8. Power Switch Board Replacement
8.1 Push the switch into the chassis's (2) front
panel. Refer to Figures 11 and 12.
8.2 Solder the Power Switch Board (9) to the
switch's terminals. For 100V units, make sure the
board's LED is lined up over the panel hole
labeled "Standby" . For 240V units, make sure
the board's LED is oriented underneath the "ON"
position icon (
8.3 Solder the wires to the Power Switch Board's
E1-E3 terminals. Refer to the Wiring Diagrams
(Figures 21 and 22) for the correct wiring
scheme.
8.4 Use Procedure 2 to return the cover (1) to
the chassis (2).
9. Line Filter Removal
NOTE: Refer to Figures 11-13.
9.1 Remove the cover (1), see Procedure 1.
9.2 Disconnect the cables attached to the line
filter (10).
9.3 Use a phillips-head screwdriver and a 5/16
wrench to remove the two screws (11) and
locknuts (12) that attaches the line filter to the
chassis (2). The screws are driven from the
bottom of the chassis.
9.4 Lift the Line Filter from the chassis.
10. Line Filter Replacement
NOTE: Refer to Figures 11-13.
10.1 Orient the Line Filter (10) into the chassis
(2). Refer to Figure 12 for 100V/120V units and
Figure 11 for 240V units.
10.2 Secure the line filter to the chassis by
tightening two screws (11) and locknuts (12) with
a phillips-head screwdriver and 5/16" wrench.
The screws are driven from the bottom of the
chassis. Refer to Figures 13 and 14.
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