Bose FREESPACE BUSINESS Service Manual - Page 14

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DISASSEMBLY/ ASSEMBLY PROCEDURES

1. Mounting Hardware Removal

NOTES: Refer to Figure 4 for Procedures 1 and 2

unless otherwise specified.

Older versions of the unit contain different

mounting hardware than newer versions of the

unit.

If you have an older version of the unit,the

mounting hardware will consist of 2 threaded tie

rods (not shown) and 4 acorn nuts with washers

(not shown). Refer to step A. for disassembly

instructions.

If you have a newer version of the unit,the

mounting hardware will consist of 2 long screws

(3) which thread into 2 pem nuts (part of the

mounting straps (5). These screws have a hex

head with a built-in washer. Some newer units also

have 1 additional washer located on the end of

each screw. Refer to step B. for disassembly

instructions.

A. For older units: Remove 1 7/16" acorn nut

(with washer) from each threaded tie rod. Another

tool may be needed to hold the acorn nut on the

other end of each rod to prevent the rod from

turning.

Slide each tie rod through the holes located in the

mounting straps. (The rod covers (4) will also slide

off). Remove the mounting straps by pulling them

carefully away from the unit.

B. For newer units: Unscrew the 2 long screws

from the 2 pem nuts (part of the mounting

straps). Pull the screws through the holes

located in the mounting straps. (The rod covers

will also slide off). On newer units there may also

be 1 washer located on the end of each screw. It

is not necessary to remove either washer.

Remove the straps by pulling them carefully

away from the unit.

NOTE: Figure numbers of exploded views will

be referred to throughout these procedures.

Certain parts will be referenced. The item

number in each figure which corresponds to the

part will be enclosed in parentheses-i.e.-rod

cover (4).

2. Mounting Hardware Replacement

A. For older units: Position the 2 mounting straps

(5) so that their screw holes line up with the 2

wide "channels" (between the fins) on each edge

of the heatsink (Figure 6,Item 1). See Figure 4

for proper strap orientation. Slide the 2 threaded

tie rods through the holes located in the mounting

straps. Make sure that the rod covers (4) are in

place before securing the rods to the straps.

NOTE: 2 of the acorn nuts (not shown) should

already be secured on the end of each tie rod.

B. Replace 2 of the 7/16" acorn nuts (with

washers). Another tool may be required to hold

the other acorn nut on each rod.

C. For newer units: Position the 2 mounting

straps so that their screw holes line up with the 2

wide "channels" (between the fins) on the edges

of the heatsink. See Figure 4 for proper strap

orientation. Some newer units have washers that

are located on each screw. Make sure that the

washers are in place before sliding the rod covers

on. Make sure that the rod covers are in place

before securing the screws to the straps. Thread

the 2 long screws (3) into each pem nut (part of

the mounting straps). Make sure that both long

screws are securely fastened.

3. Junction Box Cover Removal

NOTE: Refer to Figure 4 for Procedures 3 and 4

unless otherwise specified.

A. Loosen the 4 screws (9) which secure the

junction box cover (8). Slide the cover so that the

screws are released from the smaller section of

the screw hole. Lift the cover away from the

junction box (7).