Uneven Seams; Loose Thread End At End Backtack; Thread Sticking Out At End Backtack; Sticking In Needle Plate - Brother HE-800A User Manual

16. TROUBLESHOOTING
- . Uneven seams (7) ...... Loose thread end at end backtack
Cause
Backtack shape Check
shape
- . Uneven seams (8) ...... Thread sticking out at end backtack
Cause
Backtack shape Check
shape
Uneven material Work clamp pressure
feeding
Work clamp
Upper
opening timing
Upper
operation
Lower
opening timing
- . Uneven seams (9) ...... Sticking in needle plate
Front and rear tack sections of material gets stuck in needle hole
Cause
Start backtack Number of start backtack
stitches
Rear tack Rear tack vector shape
Needle plate Needle plate
97
Check
the backtack Set the value for parameter No. 68 to 1.0.
* If the value is set to 1.0, the rear tack will change.
Check
the backtack Set the value for parameter No. 68 to 1.0.
* If the value is set to 1.0, the rear tack will change.
Increase work clamp pressure.
* The standard height of the adjustment screw is
approximately 30 mm, so tighten it further than
this.
When using knit material, replace with the –3 work
clamp and needle plate.
thread scissors Adjust to an appropriate opening timing.
thread scissors Apply grease to the inclined face of the opening
cam.
thread clamp Adjust so that the lower thread clamp plate opens
when the feed mechanism moves 6 – 7 mm.
Check
Use parameter number 40 to reduce the number of
stitches in the front tack.
* If the material is soft, it can be effective to set the
number of stitches to 0.
Use parameter number 37 to set the rear tack
vector shape to a rectangle.
* Setting the vector shape to a rectangle can be
effective when the width is less than the bar tack
width.
When using knit material, replace with the –3
needle plate.
Replace with a needle plate with a smaller needle
hole.
HE-800A
Remedy
1.0
Remedy
1.0
Remedy
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