JUKI LBH-1790A Series Instruction Manual page 74

Error code
E908 Y feed motor origin retrieval error
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.
E911 Bobbin thread trimmer motor origin retrieval error
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.
E916 Abnormality of communication between main CPU and
main shaft CPU
When abnormality occurs in communication.
Abnormality of temperature of heat sink for main
E918
control p.c.b.
When temperature of heat sink of main control p.c.b. is
85°C or more.
Defectiveness of EEP-ROM of main control p.c.b
E943
When data writing to EEP-ROM is not performed.
Defectiveness of writing to EEP-ROM of head relay
E946
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.