Is the lcd screen completely blank? Or does is it just the touch functionality that is not working?
If the screen is blank, though the copier still turns on and appears to function (test it by printing to it,) then you most likely have a failed power inverter board. This board provides the current needed to operate the lcd screen and is a rather common failure. However, if it is just the touch feature that is not working though the screen lights up, then you most likely have a ripped ribbon cable that connects the lcd touch function to the main board on the lcd screen.
Keep my updated.
David R.
Calibrate the control panel
Use the following procedure to calibrate the control panel:
1. Turn the device off.
2. Press and hold the # key and the C key.
3. Turn the device on.
4. When a small white square appears in the upper-left corner of the control-panel display, touch
the square with a stylus.
5. When a small white square appears in the lower-left corner of the control-panel display, touch
the square with a stylus.
6. Allow the device to finish the boot process.
Hope this helps.
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