Brother BC800, Service Manual

Page: 67 / 134

3 - 16
Main parts Main unit
24
LED lamp attachment
1. Attach the LED lamp
1
with the screw
1
.
2. Attach the LED lamp connector
2
to the operation PCB
3
.
*Key point
• Secure the LED lamp lead wire 1 to the rib on the front cover.
• <Refer to "5 - 1 Special Instructions of Wiring" for wiring
details.>
1
Torque
0.39 – 0.78 N
·
m
1 1
3 2
Taptite, Bind B
M 3X8
Color; Gold
25
Thread tension holder assembly and thread take-up holder B attachment
1. Attach the thread tension holder assembly
1
with the 2 screws
1
.
2. Attach the thread take-up holder B
2
with the screw
2
.
*Key point
• Insert the wire of the thread tension holder assembly B 2 into
the groove on the front cover, and then insert the boss into the
hole on the front cover.
1
2
Torque
0.78 – 1.18 N
·
m
2 2 1
1
Taptite, Bind B
M4X14
Color; Gold
25-1
Thread tension holder ASSY assembly
1. Attach tension disc A
2
, tension disc B
3
, washer
4
, thread release plate
5
, tension disc washer
6
, washer
7
, and spring
8
in this order to the
caulking shaft of the thread tension holder assembly
1
.
2. Attach the thread tension adjusting screw
;
to the thread tension plate
9
.
3. Engage the ridge of the thread tension plate
9
with the groove on the
thread tension dial
A
, insert them into the caulking shaft of the thread
tension holder assembly
1
, and secure them with the tension dial shaft
B
.
4. Attach the notch spring
C
to the thread tension holder assembly
1
with
the screw
1
.
*Key point
• Hold the notch spring with the ridge side up, and insert it into
the lower thread tension dial A . Align the round hole with the
boss on thread tension holder assembly
1
.
1
Torque
0.78 – 1.18 N
·
m
1
1
9
8
6
5
3
;
2
4
7
B
C
A
Screw, Pan
M3X4
Color; Silver