Mitsubishi LT2-250 - Needle Bar Stop and Corner Stitching

HOW TO USE THE CONTROL BOX (LE-MDF)
1 "1—2 POSITION" select switch operations
Needle stop position can be switched between "1—POSITION" and "2—POSITION" by operating the select
switch on the switch panel.
-5 • "2—POSITION" NOTE: Whenautomatic corner stitching,
the select switch must be set at
s a- "1-POSITION" "2-POSITION".
When the thread trimmer signal isONwith the "1—2 POSITION" select switch set at "1—POSITION", thread
is trimmed with one turn of the sewing machine.
2 Adjusting the stitching speed
1. Adjusting the maximum stitching speed (pedal fully pressed downby toe)
For setting the maximum stitching speed, two variable resistors are provided: one is in the control box,
and the other on the control box panel.
The variable resistor on the control box panel permits change of the maximum stitching speed within the
range preset by the other variable resistor(internal variable resistor "H").
The internal variable resistor "H" has been factory-adjusted as follows:
Internal VR "H" setting
External VR setting
2 poles
3000 spm
Max. speed ~ 250 spm
To change die external variable resistor setting range, the setting of internal variable resistor "H" must
be change.
For reference, two marks (2500 rpm and 4500 rpm) are put on the internal variable resistor "H", as
shown following.
Whenfine speed setting is required, use a tacho-meter or other suitable instrument.
CAUTION:
(1) Stitching speed faster than that set on the two variable resistors cannot be achieved by increasing
motor pulley diameter over a certain diameter.
fnTernarvp' ^500 spm 4500 spm
"M" "T"
(Medium) (High) (Low) (Thread trimming)
Speed setting external VR
•1-2 POSITION" select switch
» m i X X A I
Tie • •••
(2) Adjusting the positionning speed (low and corner stitching speed)
(inchingspeed when the pedal is pressed down lightly.)
The positioning speed (low/ and corner stitching speed) can be adjusted by changing the setting of in
ternal variable resistor "L".
The speed increases when the variable resistor is turned clockwise, and decreases when turned coun
ter-clockwise.
The positioning speed is adjusted within a range from 160 rpm to 320 spm (it has been factory-adjust
ed at 250 spm).
From the library of: Superior Sewing Machine & Supply LLC