98
TROUBLESHOOTING
AND MAINTENANCE
IF MACHINE STOPS DUE TO OCCURRENCE OF A TROUBLE
The table below shows examples of machine trouble, its cause and required corrective action.
CAUTION
Do not attempt corrective action marked with * by yourself.
Otherwise, you could sustain injury. Consult your local TOYOTA dealer for adjustment or other correc-
tive work.
Cause Corrective Action
Machine failed
to start
Loose or broken belt Adjust belt tension, or replace the belt. *
Needle position signal not detected
Adjust the needle position so that the normal needle
position signal is displayed at the needle position dis-
play column in the LED screen at the operation panel.
Loose connection of connectors Insert the connector securely.*
Stop position
error
Loose or soiled belt Adjust belt tension or clean the belt.*
Seizure of driving parts Adjust or replace the rotary hooks and/or needle bar
drive system.*
Incorrect color
change
Incorrect needle bar position at stop Adjust the stop position.
Incorrect take-up lever position at stop.
Adjust the take-up lever so that it stops at the same
position as other take-up levers.
Needle position signal not detected
Needle position signal not detected
Adjust the needle position so that the normal needle
position signal is displayed at the needle position dis-
play column in the LED screen at the operation panel.
Jump error Incorrect positioning of parts related to the
needle bar drive system
Adjust the needle bar drive part set position with the
upper dead point stopper.*
Design dis-
placement
Incorrect tensioning of the hoop drive belt Adjust belt tension.*
Faulty hoop drive parts Replace/adjust the parts.*
Overall hoop weight is too heavy. Lower the main shaft rotating speed (r.p.m.) using the
speed adjusting switch.
Faulty drive unit (X-/Y-axis)
Replace the drive unit.*
Replace the X-or Y-axis motor.*
Thread break-
age
Incorrect needle - rotary hook timing, or
improper gap Adjust the timing or gap.
Incorrect needle bar lower dead point Adjust the lower dead point.*
Scratches on thread passage Remove scratches by polishing.
Incorrect upper/lower thread tension Adjust the tension.*
Repeated stitching at the same point Correct the embroidery data.
Incorrect take-up lever timing Adjust the take-up lever drive cam timing.*
Thread
trimming Thread is not trimmed. Adjust the thread trimming knife position.*
FD07
!