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Y-Axis Failures
The y-axis motion on the machine is controlled by the electronics. The motor driver on the Main PCB
sends commands to the motor. Feedback to the Main PCB is provided by the y-motor encoder and
the x/y home sensor PCB. These devices tell the software and the Main PCB where the motor is during
embroidering.
Problem Possible Causes Solution
Binding in y-axis or jumpy, un-
even movement of the x-beam
Bad bearings in the idler pulley Replace the idler pulley assembly
Y-drive timing belt tension too
tight or too loose
Adjust the y-belt tensions
Fretting corrosion of the y-rails Replace the y-rails and the bear-
ing block assemblies.
Lack of lubrication Lubricate the bearing block
assemblies.
Damaged belts Replace both y-axis timing belts.
Binding in the motor windings Replace the y-motor.
Excess noise when the x-beam
moves
Lack of lubrication to the y-axis
rails
Lubricate the bearing block
assemblies
Incorrect belt tension Adjust the y-timing belt tensions.
Fretting corrosion of the carriage
rails
Replace the y-rails
Y-axis runaway Connection at motor encoder
reversed
Reconnect the interface harness
to the y-motor correctly
Short in either the x/y home har-
ness or the motor interface cable
Replace the defective harness
Can not nd home X/Y Home Not Set message will
appear in the software message
text box
Set x/y home
Dirty or damaged sensor Clean or replace the x/y home
PCB.
Loose harness connection Reconnect the harness
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