Mitsubishi PLK-E03BT, Техническое руководство

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38
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Bad condition Cause Remedy
Ref. page
& Item
Pre-tension is too loose Make pre-tension tighter
7-14
Adjust trimmer cam position
7-9
Trimmer timing is delayed
Adjust synchronizer position
7-17
Upper thread tension release
timing is too fast
Delay tension release timing
Control unit
4.
Thread tail from
needle is too
long after
trimming
Tread guide is in wrong position
Adjust thread guide position
properly
7-5
Trimmer function is canceled Resume trimmer function Control unit
Fixed knife is dull Change it new knife 7-11
Skip stitching happens at trimming Fix skip stitching 7-11
Trimmer solenoid is out of order Change trimmer solenoid ----
Adjust trimmer cam position 7-9
5.
Trimming is not
functioned
Trimmer timing is wrong
Adjust synchronizer position
7-17
Needle and shuttle hook
clearance is too big
Adjust needle and shuttle
hook timing properly
7-3
Needle and shuttle hook timing is
not correct
Adjust needle and shuttle
hook timing properly
7-2
Needle is bent Change it new needle
5-2
Needle is bent by driver
Adjust needle and diver
clearance properly
7-4
6.
Skip stitching
often happens
Needle is in wrong position Amend needle position
5-2
Upper thread tension is not tight
enough
Increase upper thread tension
6-3(2)
Adjust tension regulator
position properly
7-16
Thread tension regulator’s discs
are opened during sewing
Adjust upper tension release
position properly
7-16
Needle and shuttle hook is in wrong
Adjust needle and shuttle
hook position
7-2
7.
Stitch forming is
loose
Driver and shuttle hook
clearance is very small
Adjust clearance between
driver and shuttle hook
----
Cables wiring is disconnected Connect all cables precisely
3
System software is not loaded
Load system software to
control box
5-1
Emergency stop switch is kept
ON
Release emergency stop
switch lock
6-1
8.
Sewing
machine does
not work even
start switch is
turned ON
Start switch is out of order Change it new start switch
3-7
Work holder height is too high Adjust work holder height 7-8
9.
Sewing
machine runs
idle at high
speed when
power switch is
turned ON
Foot switch is out of order Change foot switch 3-7