Brother Z-8550A Service Manual page 18

3. FUNCTION SETTINGS
Memory switch No. 80 - 88
No. Initial value
80* 0
81* 0
82* 0
83* 0
84* 0
85* 0
86* 0
87* 0
88* 0
* : Settings indicated with * are enabled after the power is turned off and then back on again.
When the neutral position for the treadle is taken as "0", depressing the treadle forward results in (+) values and depressing
the treadle backward results in (-) values, and these are added to or subtracted from the standard setting value.
Sewing
speed
Treadle backward
depression stroke
Sewing
speed
Treadle backward
depression stroke
Sewing
speed
Treadle backward
depression stroke
9
Setting range
-7 - 7 Backward depression on (thread trimming) point for treadle
-5 - 5 Backward depression 1
-5 - 5 Forward depression 1
-5 - 5 Forward depression on (starting) point for treadle
-5 - 5 Variable speed range starting point for treadle
-6 - 6 High speed range reaching point for treadle
-2 - 2 Variable speed range starting point for standing operation variable speed pedal
-2 - 2 High speed range reaching point for standing operation variable speed pedal
Treadle speed curve
0: Constant
1: Curves downward
0 - 2 2: Curves upward
Neutral Treadle forward
depression stroke
Neutral Treadle forward
depression stroke
Neutral Treadle forward
depression stroke
Setting details
st
step on (presser foot lifting) point for treadle
st
step on (presser foot lowering) point for treadle
Sewing speed
Treadle depression stroke
(Ex. 1) No. 80 setting
(Ex. 2) No. 83 setting
(Ex. 3) No. 85 setting
Z-8550A, 8560A
2257M
2258M
2259M
2260M