JUKI LK-1900B series Engineer's Manual

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Error
code
Indica-
tion
Description of error Corrective measure Remarks
E303
Z-phase detection error
Detection of the upper dead point
of the sewing machine cannot be
performed.
Turn OFF the power
switch. Check whether the
pin CN15 of SDC board is
disconnected or loose.
E305
Work clamp foot/thread trimmer
knife position error
The thread trimmer knife is not in
the proper position.
Turn OFF the power switch
and check whether CN72
of INT board is disconnect-
ed or loose.
E396
Shorter thread remaining thread
trimming cylinder error
The shorter thread remaining thread
trimming cylinder fails to operate.
(The shorter thread remaining
thread trimming cylinder sensor
fails to turn OFF when the cylinder
operates.)
Turn OFF the power switch.
Check whether the air
pressure is adequate and
whether the shorter thread
remaining thread trimming
cylinder sensor and MAIN
PCB CN53 have loosened
or fallen off.
This error occurs
when it does not
become to the
state that the
shorter thread
remaining thread
trimming cylinder
turns ON and
the sensor turns
OFF before origin
retrieval or during
shorter thread
remaining thread
trimming.
E397
Suction nozzle cylinder error
The suction nozzle cylinder fails to
operate.
(The suction nozzle cylinder sensor
fails to turn OFF when the cylinder
operates.)
Turn OFF the power switch.
Check whether the air
pressure is adequate and
whether the suction nozzle
cylinder sensor and MAIN
PCB CN54 have loosened
or fallen off.
This error occurs
when it does not
become to the
state that the
suction nozzle
cylinder turns ON
and the sensor
turns OFF during
shorter thread
remaining thread
trimming.
E398
Shorter thread remaining thread
trimming cylinder sensor error
The shorter thread remaining thread
trimming cylinder sensor fails to
detect.
Turn OFF the power switch.
Check whether the air
pressure is adequate and
whether the shorter thread
remaining thread trimming
cylinder sensor and MAIN
PCB CN53 have loosened
or fallen off.
This error occurs
when the shorter
thread remaining
thread trimming
cylinder sensor
does not turn
ON at the time
of origin retrieval
or during sewing
operation.
E399
Suction nozzle cylinder sensor
error
The suction nozzle cylinder sensor
fails to detect.
Turn OFF the power switch.
Check whether the air
pressure is adequate and
whether the suction nozzle
cylinder sensor and MAIN
PCB CN54 have loosened
or fallen off.
This error occurs
when the suction
nozzle cylinder
sensor does not
turn ON at the
time of origin
retrieval or during
sewing operation.

JUKI LK-1900B series Specifications

General

Brand	JUKI
Model	LK-1900B series
Category	Sewing Machine
Language	English