Bose 1600-VI, Service Manual

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27
DISASSEMBLY/ASSEMBLY PROCEDURES
Figure 9. Heatsink Bridge
17.3
Disconnect the amplifier board (15)
ribbon cable from the power supply (7)
J2 connector.
17.4
Make a note of the wiring configura-
tion and disconnect the wiring from power
supply terminals WL1-WL8.
17.5
Make a note of the wiring configura-
tion and disconnect all of the wires con-
nected to terminals E5-E17 of the power
supply board.
17.6
Use a phillips-head screwdriver to
remove one screw from the nylon clamp
(21) that secures the power supply large
capacitors to the chassis.
17.7
Remove two screws (30) from the
heatsink bridge with a phillips-head
screwdriver. Refer to Figure 9.
17.8
Disconnect the regulator board (8)
from the power supply using procedure 5.
Note:
The regulator board is not used in
the 1600
VI
amplifier.
17.9
Remove four screws (30), one from
each corner of the power supply board with
a phillips-head screwdriver.
17.10
Lift the power supply board from the
chassis.
Figure 8. Side View - Bottom Mounted
Components
AIR FLOW
51
Qty 2
38
52
14
Qty 4
13
35
12
Qty 2
21
Qty 4
18
29
22
Qty 2
3
Qty 4
3
Qty 4
30
Attaches
Transformer
Front
Back
Attaches
Nylon Clamp
Attaches Power Supply
Board to Heatsink
Attaches Heatsink
to Chassis
Attaches Fan
Shield to
Chassis
Attaches
Shields
to Fan
Connector
Bracket
Shield
Bracket
Nylon Clamp
Heatsink
Insulation
Attaches
Bracket to
Heatsink
Heatsink Bracket
2 Chassis
16.14
Connect the cables from the line
filter (10) power or sequence switch board
(9) and fuse holder (32) to the power
supply WL1-WL8 terminals.
16.15
Connect all the cables connected to
the transformer.
16.16
Replace the cover (1) using
procedure 2.
Note:
Refer to Figures 6, 8 and 9 for the
following procedures.
17. Power Supply Board Removal
17.1
Remove the cover (1) using
procedure 1.
17.2
Remove the transformer (4) using
procedure 11.
18
39
30
Heatsink
Bridge
Power Supply Board
Heatsink, Amplifier
Attach Bridge
to Heatsink