Led Lamp Attachment; Thread Tension Holder Assembly And Thread Take-Up Holder B Attachment; Thread Tension Holder Assy Assembly - Brother BC800 Service Manual

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
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
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
3 - 16
Main parts
Taptite, Bind B
M3X8
Color; Gold
Taptite, Bind B
M4X14
Color; Gold
Screw, Pan
M3X4
Color; Silver
Torque
·
0.39 – 0.78 N m
Torque
·
0.78 – 1.18 N m
3
Torque
·
0.78 – 1.18 N m
3 2
1 1
1
1 2
9
5
8
6
7
4
2
1
A
B
2
;
C
1