TAJIMA TEHX-C, User Manual

Page: 116 / 140

CHAPTER 11 TROUBLESHOOTING
109
2. IF TROUBLE OCCURS
Cause of troubles and adjustments
CAUTION
Adjustment includes some complicated works. Consult your local distributor before working.
Cause Adjust
Machine cannot
start
Loose or broken belts Adjust the belt tension or replace the belt.
Needle position signal, NOT detected.
Adjust the needle position so that needle position is properly
indicated in the manual color change section on the operation
panel.
Alarm lamp on the driver box (unit) is ON. Switch the power from OFF to ON.
Poor connection of power supply box connectors. Securely connect the connectors.
Stop position
error
Loose or soiled belt Adjust the belt tension or clean the belt.
Galling of driving parts
Replace the driving parts for needle bar/rotary hook.
or make adjustment.
Incorrect color
changing
Stop position is incorrect. Adjust the position.
Position of take-up lever is wrong.
Adjust the position of the take-up lever at the stop position so
that its position is the same as others.
Needle position NOT detected.
Adjust the needle position so that needle position is properly
indicated in the manual color change section on the operation
panel.
Jump error
Incorrect positioning of parts related to needle
bar drive system Adjust the attaching position of the needle bar reciprocator set
with the upper dead point stopper.
Design displaced
Incorrect positioning of frame drive belt Adjust the belt tension.
Malfunctioning of frame drive system Replace/adjust the parts.
Overall frame weight is excessive. Lower the r.p.m. of the main shaft.
Drive unit (X, Y-axes) defective
Replace the drive unit.
Replace the X-axis/Y-axis drivers.
Thread breakage
Wrong needle-rotary hook timing or improper
gap
Adjust the timing or gap.
Wrong needle bar lower dead point Readjust the lower dead point.
Scratches on rotary hook, presser foot, or thread
passing course
Remove the scratches.
Incorrect upper/lower thread tension Adjust the tension.
Repeated stitching at the same point Correct the data.
Incorrect take-up lever timing Readjust the take-up lever driving cam timing.
Matters related to
ATH
Thread is not trimmed. Adjust the ATH knife position.
Thread comes off at start of sewing.
“Picker timing”(p.84)Adjust the thread trimming length by set-
ting.
Poor tensioning of upper thread Adjust the tension.
Needle bar acti-
vates even if the
tension base
switch is set to the
“bottom” posi-
tion. Tension base card is faulty.
Replace the tension base card.
Defect in sensor card
Poor adjustment for jumping
(GC02)
!