Adjusting The Servo Gain - GRAPHTEC FC7000-75 Service Manual

7.3.16 Adjusting the Servo Gain

This adjustment will set the servo gain for controlling the X/Y motor.
When you replace the main board of FC7000-75 to new type of main board (Main board for the FC7000MK2
series) this procedure is required.
The servo gain value is set to the default of firmware, except using the new type of main board (Main board
for the FC7000MK2 series) for the FC7000-75.
Note: You must readjust the servo gain when you performed the Nov-RAM Clear to the FC7000-75,
which is installed new main board.
How to adjsut the servo gain
(1) Mount a 0.9 mm diameter cutter pen in the pen holder.
(2) Load a sheet of paper in the plotter.
(3) Turn on the power while pressing the TEST and ENTER keys or after turning on the power, press the
TEST key and the ENTER key simultaneously within 2 seconds.
(4) Press the PAUSE key to display the menu shown below.
SENSOR TEST
(5) Press the F4 key to display the menu shown below.
GAIN
X=40
(6) Input the values that are shown below.
Model
FC7000-75 with new main board
Press the UP or DOWN ARROW key to change the X-Gain value.
Press the LEFT or RIGHT ARROW key to change the Y-Gain value.
(7) Press the ENTER key to store the setting and complete the adjustment.
FC7000-UM-251-9370
KEY TEST
PEN FORCE
XY GAIN
Y=70
X-Gain Y- Gain
30 32
7-31
7. ADJUSTMENT