JUKI AMS-221F3020RSW/AW-3, Instruction Manual

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Display and
description of
error
Cause Error handling procedure
Power cannot be
turned ON.
① The power plug is not inserted or
contact failure.
○ Check how the power is supplied.
② Fuse has blown. ○ Replace the fuse according to “III-2-2. Replacing the
fuse” p.150 . If the device cannot be powered even after
the replacement of the fuse, the device may have failed. In
such a case, stop using the device.
E074
Removal of
thread remaining
on the bobbin is
not carried out
normally.
① Obstacles such as dust, etc. gather
on the moving section.
○ Carry out maintenance referring to
“III-2-1. Cleaning”
p.148
.
② Thread is entangled with
unwinding elimination roller.
○ Remove the thread.
③ Remaining-thread sucking vacuum
force is insufficient.
○ Check whether or not the dust bag is full of dust.
○ Check whether or not the air pressure has dropped.
④ Thread end is not properly guided.
⑤ Type or count of thread is different
from the specification.
E075
Thread has failed
to twine properly
on the bobbin.
① Obstacles such as dust, etc. gather
on the moving section.
○ Carry out maintenance referring to “III-2-1. Cleaning”
p.148 .
②
Length of thread coming out of the
nozzle is not appropriate.
○ Adjust the length of thread coming out of the nozzle to
approximately 13 cm.
③ Thread unraveling is not
performed appropriately.
○ Check the thread unraveling condition setting.
○ Check the length of thread coming out of the nozzle.
④ No thread on bobbin thread cone. ○ Put the bobbin thread cone in place.
⑤ Thread tension is high at thread
route.
○ Referring to "I-4-4. How to thread the device with the
bobbin thread (RSZ type)" p.19 , "I-4-5. How to
thread the device with the bobbin thread (RSW type)"
p.20 check the thread tension.
⑥ Thread route is not correct. ○ Check the threading route referring to
"I-4-4. How to
thread the device with the bobbin thread (RSZ type)"
p.19
,
"I-4-5. How to thread the device with the
bobbin thread (RSW type)" p.20
. In particular, the
roller and actuating arm, etc. of the bobbin thread feeding
unit are threaded correctly.
⑦ Mounting position and direction of
the nozzle are not appropriate.
⑧ Bobbin fails to rotate. ○ Referring to "I-4-4-2. Installing the bobbin" p.19 , "I-
4-5-2. How to fit a bobbin in the bobbin case" p.21
check whether or not the bobbin is fitted in the bobbin
case correctly.
⑨ Bobbin thread feeding unit fails to
operate.
○ Check whether or not the connector, air tube, etc.
coming from the bobbin thread feeding unit are correctly
connected.
⑩ Bobbin tape has worn out. ○ Change the bobbin with a new one.
3-2. Troubles with the AW device and corrective measures