Brother BAS-705 - Page 84

10. TROUBLESHOOTING
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BAS-705
Belt loop and fork timing
during belt loop pick-up
Distance between loop
pressers and belt loops when
belt loops are being fed
Tilt of loop hold plate
Belt loops
Pick-up speed is too fast.
Belt loop and loop guide
spring timing
Vertical sensor dog is
dropping too far.
Distance between
loosen loop presser
plate and belt loops
Distance between belt
loops and presser foot
Distance between belt
loops and presser foot is
too small.
Position of release
presser plate is incorrect.
Vertical sensor dog
height is too low.
Belt loops are not being
guided properly.
Fork is hitting belt loops
when belt loops are
being picked up.
Belt loop and fork height
is incorrect during belt
loop pick-up.
Cutter and loop pressers
are not aligned correctly.
Loop hold plate is tilted.
Belt loops are too curled.
Belt loop folding position
is incorrect.
Adjust the valve.
Adjust the height of the
fork.
Adjust the width
adjustment plate.
Install correctly.
Replace with belt loops
which are not so curled.
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Adjust the loop guide
spring.
Adjust the height of the
sensor dog.
Adjust the height of the
loosen loop presser set
plate.
Adjust the height of the
shock absorber underneath
the driving cylinder arm.
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Belt loops are getting
caught on presser foot.
Problem Cause Check
Page
Remedy
Machine head presser
foot and belt loop
Machine head presser
foot is touching belt loop.
Adjust the height of the belt
loops when they are placed.
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Loop presser foot and
belt loop
Loop presser foot is at
an angle to belt loop.
Adjust the tilt of the loop
presser foot.

Loop position during
delivery
Loop delivery position is
incorrect.
Check process from
folding to delivery.
Bar tacking position is
incorrect.
Sewing finish
Fork bracket F position
is incorrect.
Move fork bracket F to
adjust.
Changed bar tacking
position for 2nd bar tacking
Sewing finish
Drive cylinder arm
position is incorrect.
Move the drive cylinder
arm back and forth to adjust.
Changed bar tacking
position for 1st bar
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