49
LK3-B438E Mark II
Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from
the wall outlet before opening the face plate of the control box. Touching areas where high volt-
ages are present can result in severe injury.
Machine motor operation error.
E-13
E-20
E-21
E-30
E-32
E-31
E-40
E-41
E-42
E-50
E-60
E-61
E-62
E-63
E-70
E-80
E-81
E-82
E-90
E-91
Cause
Machine specification select connector is
not connected properly.
Problem with machine motor stopping, or
synchronizer connection error.
Data is outside possible sewing area due
to enlargement ratio setting.
The data format of the user program (% or
mm) does not match the setting of DIP
switch A-6.
After changing the setting of DIP switch A-6, clear
all memory settings. (Refer to “10-15. Clearing all
memory settings”.)
Stitch pattern data overlaps the sewing
area when area limiting is active.
Length of a stitch exceeds 10 mm.
Abnormality in the sewing data.
Invalid program number specified.
Needle bar does not stop when the needle
is raised.
Presser has not been lowered.
Presser cannot be raised.
Presser is not raised.
Presser cannot be lowered.
Cooling fan does not operate.
Motor PROM is not correctly inserted.
Foot switch was depressed when the
power was turned on.
An operation panel switch was depressed
when the power was turned on.
Abnormal drop in power supply voltage,
or power was turned on again
immediately after it was turned off.
Abnormal rise in power supply voltage.
Remedy
Turn off the power and check if connectors P3 is
disconnected.
Turn off the power, and then turn the machine
pulley to check if the machine has locked up. Check
the synchronizer connection. Check if connectors
P11, P12 and P13 are disconnected.
Turn off the power and check the ground wire
connection.
Press the RESET switch, and then set the
enlargement ratio again.
Press the RESET switch, and then reset the memory
switches “30” and “31” or enlargement ratio.
Press the RESET switch, and then set the
enlargement ratio again.
If programming a new sewing data, repeat the
procedure from the beginning.
Press the RESET switch and specify a correct
number.
Turn the pulley to align the index mark with the
needle up stop position. (Refer to “10-11. Adjusting
the needle up stop position”.) Check the V-belt
tension. (Refer to “3-14. Installing the V-belt”.)
Refer to “16. Troubleshooting”.
Turn off the power and check the connection of
presser sensor connector P1.
Turn off the power, and then check if the cooling
fan is blocked with scraps of thread.
Turn off the power and check.
Turn off the power and check.
Turn off the power and check the operation panel.
Check that all panel cords are normal.
Turn off the power and check the input voltage.
After turning off the power, wait 3 seconds or more
before turning it on again. (Refer to “10-14.
Checking the input voltage”.)
Turn off the power and check the input voltage.
(Refer to “10-14. Checking the input voltage”.)
Code
14. TABLE OF ERROR CODES
DANGER
If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in
the display window. Follow the remedy procedure to eliminate the cause of the problem.
14. TABLE OF ERROR CODES
