Brother International BAS-343E Instruction Manual - English - Page 61

Troubleshooting, Refer to Skipped

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14. Troubleshooting 14. Troubleshooting Problem Cause Check Remedy Page Auxiliary work clamp does not rise. Insufficient air pressure Presser lifter air tube is bent or damaged. Auxiliary work clamp regulator setting Presser lifter air tube Adjust the air pressure. 6 Straighten the bend in the tube or replace the tube. Auxiliary work clamp does not drop. Work clamp operation is sluggish. Presser lifter air tube is bent or damaged. Sliding part of the work clamp lubrication Presser lifter air tube Grease the sliding part of the work clamp.  6 Straighten the bend in the tube or replace the tube. Presser lift amount is incorrect. Incorrect position of presser arm lever F. Distance between work clamp and top of needle plate Adjust the work clamp lift amount. 37 Thread wiper does not operate correctly. Interference between thread wiper and work The thread wiper is obstructing the needle. Thread wiper position is incorrect. Clearance between thread wiper and work clamp Clearance between thread wiper and needle tip Thread wiper position Adjust the height of the thread wiper. 38 Adjust the height of the thread wiper. 38 Adjust the operating distance of the thread 38 wiper. Lower thread winds to one side. Bobbin winder thread tension stud height is incorrect. Bobbin winder thread tension stud height Adjust the height of the thread tension stud. 11 Lower thread winding amount is incorrect. Bobbin presser position is incorrect. Thread winding amount Adjust the position of the bobbin presser. 11 Thread slips out of the needle. Stitches being skipped at the sewing start. Uneven upper thread length. Position of shuttle race thread guide is incorrect Refer to "Skipped stitches occur". Upper thread length Position of shuttle race thread guide Refer to "Skipped stitches occur". Adjust the sub-tension. 10 Adjust the position of the 33 shuttle race thread guide Cassette is not ejected. Cylinder pin is not working properly. Sensor is not detecting the cassette. Malfunction of foot switch Turn off the power and check valve 2 manually. Check the indicator lamp status. BAS-343E 54

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14. Troubleshooting
54
BAS-343E
14. Troubleshooting
Check
Remedy
Problem
Cause
Page
Auxiliary work clamp
does not rise.
Auxiliary work clamp
regulator setting
Insufficient air pressure
Adjust the air pressure.
6
�
�
�
Presser lifter air tube
Presser lifter air tube is
bent or damaged.
Straighten the bend in
the tube or replace the
tube.
Auxiliary work clamp
does not drop.
Distance between
work clamp and top of
needle plate
Incorrect position of
presser arm lever F.
Presser lift amount is
incorrect.
37
Adjust the work clamp
lift amount.
Sliding part of the work
clamp lubrication
Work clamp operation is
sluggish.
Grease the sliding part
of the work clamp.
6
�
�
�
Presser lifter air tube
Presser lifter air tube is
bent or damaged.
Straighten the bend in
the tube or replace the
tube.
Bobbin winder thread
tension stud height
Refer to "Skipped
stitches occur".
Thread wiper position
Clearance between
thread wiper and
needle tip
Thread wiper position
is incorrect.
Uneven upper thread
length.
The thread wiper is
obstructing the needle.
Bobbin winder thread
tension stud height is
incorrect.
Bobbin presser
position is incorrect.
Stitches being skipped
at the sewing start.
38
38
11
Adjust the operating
distance of the thread
wiper.
Adjust the position of
the bobbin presser.
Refer to "Skipped
stitches occur".
Adjust the height of the
thread wiper.
Adjust the height of the
thread tension stud.
Adjust the sub-tension.
Thread wiper does not
operate correctly.
Lower thread winds to
one side.
Thread winding amount
Upper thread length
Lower thread winding
amount is incorrect.
Thread slips out of the
needle.
Position of shuttle race
thread guide is incorrect
Position of shuttle race
thread guide
Adjust the position of the
shuttle race thread guide
10
11
33
Clearance between
thread wiper and work
clamp
Interference between
thread wiper and work
Adjust the height of the
thread wiper.
38
Turn off the power
and check valve 2
manually.
Sensor is not detecting
the cassette.
Cylinder pin is not
working properly.
Cassette is not ejected.
Malfunction of foot
switch
Check the indicator
lamp status.