JUKI LBH-1790AN Instruction Manual page 82

Error code
E907 Needle rocking motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Y feed motor origin retrieval error
E908
When origin sensor signal is not inputted at the time of
origin retrieval motion.
E909 Needle thread trimmer motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
E910 Presser motor origin retrieval error
When origin sensor signal is not inputted at the time of
origin retrieval motion.
Bobbin thread trimmer motor origin retrieval error
E911
When origin sensor signal is not inputted at the time of
origin retrieval motion.
E912 Sewing motor speed detection error
-
In the case the sewing machine motor malfunctions
E915 Abnormality of communication between operation
panel and main CPU
When abnormality occurs in communication.
Abnormality of communication between main CPU
E916
and main shaft CPU
When abnormality occurs in communication.
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.
E943 Defectiveness of EEP-ROM of main control p.c.b
When data writing to EEP-ROM is not performed.
E946 Defectiveness of writing to EEP-ROM of head relay
p.c.b.
When data writing to EEP-ROM is not performed.
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.
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).
Description
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How to recover Place of recovery
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.
Turn OFF the
power.