GRAPHTEC Cutting PRO FC2230 Series Service Manual page 97

A motor for adjustment purposes can be used instead of an oscilloscope to adjust the motor
offset. Use a motor from a plotter or a cutting plotter.
NOTE: Before adjusting the motor driver IC's offset.
1. Disconnect all the X motor lines from the X joint board P301 and P302.
2. Disconnect all the Y motor lines from the X-Y joint board P601 and P602.
(1) Connect the motor to the connector of the axis you wish to adjust on the main board.
・ X-AXIS : P301
・ Y-AXIS : P601
(2) Set the DIP switch as shown below and then turn on the plotter.
(Set only Bit 8 to OFF)
(3) To adjust the X axis, adjust VR2 (X-OFFSET) until the motor stops rotating.
(4) To adjust the Y axis, adjust VR1 (Y-OFFSET) until the motor stops rotating.
(5) When the adjustments are completed, return the DIP switch to its default settings and then
turn off the plotter. Also reconnect all the X and Y motor lines.
FC2230-UM251-01-1600 7-10