JUKI LBH-1790AN, Instruction Manual

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Error code Description How to recover Place of recovery
E907 Needle rocking motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Turn OFF the
power.
E908 Y feed motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Turn OFF the
power.
E909 Needle thread trimmer motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Turn OFF the
power.
E910 Presser motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Turn OFF the
power.
E911 Bobbin thread trimmer motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Turn OFF the
power.
E912
-
Sewing motor speed detection error
In the case the sewing machine motor malfunctions
Turn OFF the
power.
E915 Abnormality of communication between operation
panel and main CPU
When abnormality occurs in communication.
Turn OFF the
power.
E916 Abnormality of communication between main CPU
and main shaft CPU
When abnormality occurs in communication.
Turn OFF the
power.
E918 Abnormality of temperature of heat sink for main con -
trol p.c.b.
When temperature of heat sink of main control p.c.b. is
85°C or more.
Turn OFF the
power.
E943 Defectiveness of EEP-ROM of main control p.c.b
When data writing to EEP-ROM is not performed.
Turn OFF the
power.
E946 Defectiveness of writing to EEP-ROM of head relay
p.c.b.
When data writing to EEP-ROM is not performed.
Turn OFF the
power.
E998
Presser deviation error
In the case the presser foot fails to go up when the pedal
is released or when the sewing is finished.
Turn the power OFF. Check whether the work clamp can
be lifted/lowered manually.
During the aforementioned check, be careful about the
needle and the knife.
Turn OFF the
power.
E999 When cloth cutting knife does not return
• When cloth cutting knife does not return after the lapse
of predetermined time.
• When sensor is not turned ON while cloth cutting knife
is raising (at the time of waiting).
Turn OFF the
power.