Brother Z-8550A Manuale Proprietario

 

 

Z-8550A, 8560A 

103 

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•  Two types of treadle unit are available: a type which controls the automatic presser foot lifter and a type which does not 

control it. 

•  It is possible to switch between the two specifications by <A> Changing the hooking position of the spring (1) inside the 

treadle unit; <B> setting DIP switch No. 2; and <C> setting the treadle depression stroke. 

 

SPECIFICATIONS Treadle unit -G 

Treadle unit -H 

Operation 

Does not control the automatic presser foot lifter

Controls the automatic presser foot lifter 

<A> 
Difference in 
spring position 

[a] 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

[b] 

<B> 
DIP switch 
setting 

DIP switch No. 2: OFF 
<When treadle is depressed forward> 
Presser foot control signal is not output while 
treadle is being depressed. 

DIP switch No. 2: ON 
<When treadle is depressed forward> 
Automatic presser foot lifting signal is output 
immediately before the depression force suddenly 
changes. 
 

<C> 
Signal setting 

Make the settings in “12-3. Standard settings for 
treadle depression stroke”.   
Set the “Neutral position”, “Maximum forward 
depression position” and “Maximum backward 
depression position”. 

Make the settings in “12-3. Standard settings for 
treadle depression stroke”.   
Set the “Neutral position”, “Maximum forward 
depression position” and “Maximum backward 
depression position”. 
The modulation position for the depression force 
at the first step is set automatically. 

<D> 
Depression force 

<When depressing forward or depressing backward>
The depression force hardly changes at all from 
the start of depression until the maximum 
depression. 
 

<When depressing forward or depressing backward>
The depression force suddenly changes at a point 
between the start of depression and the 
maximum depression. 
 

<E> 
Depression 
signal 

<When depressed forward> 
Sewing machine starts. 
<When depressed backward> 
Sewing machine starts. (*1) 
 

<When depressing forward or depressing backward>
Automatic presser foot lifting signal is output 
immediately before the depression force suddenly 
changes, and the sewing machine starts at the 
point after the force suddenly changes. 
 

(*1)  The presser foot lifting signal is output while the treadle is being depressed backward. However, if DIP switch No. 1 is 

set to OFF, the presser foot lifting signal is not output while the treadle is being depressed backward after the knee 
switch has been used to lift the presser foot. 
In addition, if memory switch No. 41 is set to “1”, the presser foot lifting signal is no longer output while the treadle is 
being depressed backward. 

1840M

1839M

（1）

（1）