Service manual

7
Press in the Emergency Stop knob again. Return the P201 and P203 external cable
plugs to the correct sockets. Remove the top access panel from the electronics
enclosure (6 – 3/32” Allen screws)
We now know that the entire X-axis portion of the system is OK, and that the Y-axis
motor and external cable is functioning normally as well. The next step is to rule out an
internal cable as the source of the Y-axis malfunction. To do this, we will remove and
swap the front and rear driver board plugs on both the X and Y axis. (the lower two
drivers on the left side of the enclosure).
In effect, we are simply substituting each driver board to operate the opposite motor
axis; the X-axis driver will operate the Y-axis cabling / motor, and vice versa.
In Motion Console, go to Axis 0, and Enable the machine. When operating the X-axis
controller with the Y-axis driver board, the loud noise again occurs.
To confirm the Y-axis driver as the source of the problem, go to Axis 1 and operate the
Y-motor with the X-driver connected. The motor operates normally. This leaves no other
possible conclusion than a defective Y-axis driver board.
Connect the driver cable plugs back to the proper locations, and replace the defective
driver board.
Note: Do NOT swap either the X or Y axis driver cables with the C-axis cable. The
power ratings for the C-axis driver are different, and it could be damaged by running one
of the larger stepper motors through it.
Y
C = Cutting Head
X
Motors
Y
Drivers
X
Internal X & Y Driver cables swapped
C
Transition Board
From MEI / Computer
Y-axis driver isolated
as cause of
p
roblem