Jack JK-T781E, Manual

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11、Error code
Error
code
Content Solution
E1 1)
Power module error code
2)Abnormal overcurrent and
overvoltage
Module driver efforts and head efforts are both closed.
waiting for restart
（
check power board
）
not frequent
E3 Stepper motor communication
abnormal Check the communication line between stepper motor drive
board and main board.
E6 Stepper motor senses abnormal 1. Check if stepper motor sensor (optoelectronic switch) is ok
2.
Check if stepper motor’s mechanical structure is right
E7 a. Loose contact of engine plug
b. Position signal abnormal
c. Head is blocked
d
.
Fabric is too heavy
.
e. module drive efforts abnormal
Module driver efforts and head efforts are both closed.
waiting for restart
（
check machine head, positioner, engine, module
drive)
）
E9 Positioning signal abnormal Check up and down positioning signal and belt pulley
E11 Find the up position automatically
after booting. But positioner inserts to
control box, needle signal cannot be
outputted.
Engine doesn’t work.(Check positioner
）