Take the following steps if your Fargo DTC525LC is displaying a Check Lam error:
Try a different roll of laminate
Make sure the laminate is loaded correctly and centered on the spools
Calibrate the lamination sensor through the driver and run a self test with lamination
Increase the Manual Sensor Calibration by 5-10 points through the printer’s front panel LCD. (Note: If you increase this value and then calibrate the sensor through the driver it will default back to the lower setting)
Scroll down and select Setup Printer
Scroll down to Lam Settings and press select
Scroll down to Sensor Manual and press select
Increase the setting between 5-10 positive points using the up arrow.
Run a self test with lamination to ensure the problem is resolved.