Bose 1600-VI Service Manual download pdf (Page 26)

26

DISASSEMBLY/ASSEMBLY PROCEDURES

16.4 Connect the output board black wires

to the binding posts (items 24 or 25) by

tightening four nuts with a wrench. Refer to

Figure 19 for the proper wiring.

16.5 Connect the I/O board (6) ribbon cable

to the output board J2 connector.

16.6 Connect the fan (23) connector to the

output board J3 connector.

16.7 Return the heatsink (18) to it's loca-

tion. Use a phillips-head screwdriver to

tighten four screws (29) to the two brackets

(22) that fasten the heatsink to the chassis

back panel.

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.

16.9 Secure the power supply (7) large

capacitors to the inside of the chassis by

tightening one screw (20) into the nylon

clamp that wraps around one of the

capacitors.

Note: Refer to wiring diagrams Figures 19

and 20 for the following procedures.

16.10 Connect the cables from the

amplifier (15) and power supply board to

the output board WL1, WL2, WL100,

WL200 and WL201 terminals.

16.11 Connect the amplifier board ribbon

cables to the I/O Board J100 and J200

connectors.

16.12 Connect the display board (5) wiring

harness to the I/O board J3 connector.

16.13 Solder the red and white wires from

the 2-pin harness connector to the I/O

board E10 and E11 terminals. They are

located near the amplifier board transistor

shield (19).

15.9 Using a phillips-head screwdriver,

remove four screws (29) from the two

brackets (22) that secure the heatsink (18)

to the inside of the chassis back panel.

15.10 To release the heatsink base from

the bottom of the chassis, use a phillips-

head screwdriver to remove four screws (3)

from the chassis bottom panel. Move the

entire heatsink away from the output board.

15.11 Disconnect the fan (23) from the

output board J3 connector.

15.12 Disconnect the I/O board ribbon

cable from the output board J2 connector.

15.13 Use a phillips-head screwdriver to

remove two screws (11) that fasten the

output board to the bottom of the chassis.

15.14 Use a phillips-head screwdriver to

remove two screws (11) on the back panel

that attach to the two brackets on the

output board. They are located underneath

the red and black binding posts.

15.15 Use a wrench to remove four nuts

from the binding posts (items 24 or 25).

Release the wires from the posts.

15.16 Lift the output board out of the

chassis.

16. Output Board Replacement

16.1 Place the output board (16) into the

chassis (2). Align the board so the two

brackets on the board face the back panel

of the chassis.

16.2 Secure the output board to the bottom

of the chassis by tightening two screws (11)

with a phillips-head screwdriver.

16.3 Use a phillips-head screwdriver to

tighten two screws (11) into the output

board brackets. The screws are driven

from the outside of the back panel.

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