JUKI LK-1900BN Series Instruction Manual page 72

Error code Indication
Z phase detection error
E303
Detection of the upper dead point of the
sewing machine cannot be performed.
E305 Thread trimmer position error
The thread trimmer is not in the proper
position.
E396 Shorter-thread remaining type thread
trimmer cylinder error
The shorter-thread remaining thread trim-
mer cylinder fails to operate.
(The shorter-thread remaining type thread
trimmer cylinder sensor fails to turn OFF
when the cylinder operates.)
Suction nozzle cylinder error
E397
The suction nozzle cylinder fails to oper-
ate.
(The suction nozzle cylinder sensor fails
to turn OFF when the cylinder operates.)
E398 Shorter-thread remaining type thread
trimmer cylinder sensor error
The shorter-thread remaining type thread
trimmer cylinder sensor fails to detect.
Suction nozzle cylinder sensor error
E399
The suction nozzle cylinder sensor fails to
detect.
E405 Prohibition of deletion of direct pat-
terns
The direct pattern is set in the cycle sew-
ing data.
E430 Counter set-value is reached
The set value of the counter is reached.
* For the type of counter and the counter
E730 Encoder trouble A
Encoder A or B phase cannot be detected.
E731 Encoder trouble B
Encoder U, V or W phase cannot be de-
tected.
Reverse rotation of motor
E733
The motor is reversing.
Description of error
value displayed depends on the prede-
termined counter.
Corrective measure
Turn OFF the power switch.
Check whether the pin of the
SDC board CN15 has come
off or has loosened.
Turn OFF the power switch
and check whether CN72
has come off or has loos-
ened.
Turn OFF the power switch.
Check whether the air pres-
sure is adequate and wheth-
er the shorter-thread remain-
ing thread trimming cylinder
sensor and MAIN PCB CN53
have loosened or fallen off.
Turn OFF the power switch.
Check whether the air pres-
sure is adequate and wheth-
er the suction nozzle cylinder
sensor and MAIN PCB CN54
have loosened or fallen off.
Turn OFF the power switch.
Check whether the air pres-
sure is adequate and wheth-
er the shorter-thread remain-
ing thread trimming cylinder
sensor and MAIN PCB CN53
have loosened or fallen off.
Turn OFF the power switch.
Check whether the air pres-
sure is adequate and wheth-
er the suction nozzle cylinder
sensor and MAIN PCB CN54
have loosened or fallen off.
Re-operation is enabled after
resetting.
Re-operation is enabled after
resetting.
Turn OFF the power switch.
Check whether the pin CN15
has come off or has loos-
ened.
Turn OFF the power switch.
Check whether the pin CN15
has come off or has loos-
ened.
Turn OFF the power switch
and check whether coupling
of the main motor is loose.
－ －
69
Remarks