Standard Setting Values - Brother Z-8550A Service Manual

12-2. Standard setting values

Function Signal
No. (Diagram
below)
- S0
82 S1
83 S2
84 S3
85 S4
- S5
81 S6
80 S7
- S8
(*1) Enabled when DIP switch No. 1 is set to "ON" and memory switch No. 13 is set to "1".
(*2) Enabled when memory switch No. 12 is set to "0".
• When the connecting rod installation position is on the inside, the setting value is the amount of movement when the
treadle is depressed forward or backward.
• For treadle unit -H, the point (F) where the forward depression force changes is in between S1 and S2, and the point (R)
where the backward depression force changes is between S6 and S7.
Sewing
speed
SPECIFICATIONS
Operation
Spring position setting
Function
Neutral point
Forward automatic
presser foot lifting point
Low speed operation
starting point
Speed change starting
point
Maximum speed arrival
point
Maximum forward
depression point
Backward automatic
presser foot lifting point
Thread trimming
operation point
Maximum backward
depression point
Depressed backward Neutral
Treadle unit -G
Automatic presser foot lifting
does not occur
st
No modulation at 1 step forward
or backward
(Figure [a] on previous page)
Length from S0 Force
(mm)
0
-
3
6
S5-1
14.5
-
5
8
Depressed forward
Z-8550A, 8560A
12. TREADLE UNIT
Treadle unit -H
Automatic presser foot lifting
occurs
Modulation at 1
and backward
(Figure [b] on previous page)
Length from S0
(N) (mm)
- 0
- 2 (*1)
10 5
- 7
- S5-1
12 14.5
- 2 (*2)
22 5
28 8
st
step forward
Force
(N)
-
10
25
-
-
32
14
35
43
1841M
104