Brother KE-430F Series, Service Manual, Page: 114 / 184

11. ADJUSTMENT
104 KE-430F, BE-438F
11-1-1. Upper and lower thread tension
<Operating the upper thread tension>
● When using a foot switch
In the sewing standby condition and during test operation standby, the thread tension in the TENSION display (2) which has
been set for the section appearing in the SECTION No. display (1) on the operation panel will be output while the foot switch
is being depressed backward.
When the foot switch is returned to the neutral position, the thread tension will be released.
* If the work clamp/button clamp is lowered when the foot switch is returned to the neutral position, the thread tension output
will be maintained.
● When using a 2-pedal foot switch (option)
In the sewing standby condition and during test operation standby, the thread tension which has been set in the SECTION No.
1 (sewing start section) will be output while the work clamp/button clamp is lowered (while the work clamp switch is being
depressed) regardless of the section which appears in the SECTION No. display (1) on the operation panel.
When the work clamp switch is released, the thread tension will be released.
* If the work clamp/button clamp is lowered when the work clamp switch is released, the thread tension output will be
maintained.
* The above operations are enabled when memory switch No. 072 is set to “1” or “2”.
2318B 2319B
Start switch
Work clamp switch (2-step)
<Foot switch>
<2-pedal foot switch(option)>
Backward depression position
Neutral
2923B 2924B 2925B