Bose 1600VI Service Manual page 27

DISASSEMBLY/ASSEMBLY PROCEDURES
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.
Chassis 2
13
Attaches
Transformer
14
Qty 4
Attaches Power Supply
Board to Heatsink
30
Qty 4
Attaches Heatsink
3
to Chassis
Qty 4
Attaches Fan
Shield to
3
Chassis
Qty 2
Attaches
Shields
12
to Fan
Connector
51
Bracket
AIR FLOW
52
Shield
Bracket
38
Qty 2
Figure 8. Side View - Bottom Mounted
Components
Front
21 Nylon Clamp
Attaches
Nylon Clamp
18
Heatsink
35
Insulation
Attaches
29
Bracket to
Qty 4 Heatsink
Heatsink Bracket
Qty 2
22
Back
Attach Bridge
30
to Heatsink
Heatsink
Bridge
39
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 1600VI 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.
27
Power Supply Board
18
Heatsink, Amplifier