Bose 1800-V Manual page 26

16.4 Connect the Output Board's black wires to
the binding posts (items 24 or 25) by tightening
four nuts with an 11/32 wrench. Refer to Figure
13 for their location. Refer to the wiring diagram
for the proper wiring scheme.
16.5 Connect the I/O Board's (6) ribbon cable to
the Output Board's J2 connector. Refer to Figure
13.
16.6 Connect the fan's (23) connector to the
Output Board's J3 connector. Refer to Figure 13.
16.7 Place the heatsink (18) back into place. Use
a phillips-head screwdriver to tighten four screws
(29) to the two brackets (22) that fasten the
heatsink to the chassis's back panel. Refer to
Figures 10 and 14.
16.8 Secure the heatsink to the bottom of the
chassis by tightening four screws (3) with a
phillips-head screwdriver. The screws are driven
from the bottom of the chassis. Refer to Figure
14.
16.9 Secure the Power Supply's (7) large
capacitors to the inside of the chassis by
tightening one screw (20) and locknut (12) into
the nylon clamp that wraps around one of the
capacitors. Use a phillips-head screwdriver and
5/16" wrench. Refer to Figure 14.
16.10 Connect the following cables (Refer to
Figure 12):
NOTE: Refer to the wiring diagrams (Figures 21
and 22) for the proper connectivity.
Connect the cables from the Amplifier (15) and
Power Supply Board to the Outputs Board's
WL1, WL2, WL100, WL200 and WL201
terminals.
Connect the Amplifier Board's ribbon cables to
the I/O Board's J100 and J200 connectors.
Connect the Display Board's (5) wiring harness
to the I/O Board's J3 connector.
Solder the red and white wires from the 2-pin
harness connector to the I/O Board's E10 and
E11 terminals. They are located near the
Amplifier Board's transistor shield (19).
Connect the cables from the line filter (10),
Power or Sequence Switch Board (9) and fuse
holder (32) to the Power Supplies WL1-WL8
terminals.
All the cables connected to the transformer.
16.11 Return the cover (1) to the chassis (2), use
Procedure 2.
17. Power Supply Board Removal
17.1 Use Procedure 1 to remove the cover (1)
from the chassis (2).
17.2 Disconnect the Amplifier Board's (15) ribbon
cable from the Power Supply's (7) J2 connector.
Refer to Figure 12.
17.3 Unsolder the wiring from Power Supply
terminals E5-E17. Refer to Figure 12.
17.4 Disconnect the wiring from Power Supply
terminals WL1-WL8 .
17.5 Use a phillips-head screwdriver and 5/16
wrench to remove one screw (20) and locknut
(12) from the nylon clamp (21) that secures the
Power Supply's large capacitors to the chassis.
Refer to Figures 12 and 14.
17.6 Remove two screws (30) and washers from
the heatsink bridge with a phillips-head
screwdriver. Refer to Figure 15.
17.7 Disconnect the Regulator Board (8) from the
Power Supply, use Procedure 5.
17.8 Remove four screws (30), one from each
corner of the Power Supply Board with a phillips-
head screwdriver.
17.9 Lift the Power Supply Board from the
chassis.
Heatsink, Amplifier
18
Power Supply Board
Figure 15. Heatsink Bridge
26
39
Heatsink
Bridge
Attaches Bridge
30
to Heatsink