Epson SureColor SC-P7500 cannot be calibrated: Prelinearization exceeds the tolerances – GMG Support

Error message: "The pre-linearization results are exceeding the defined tolerances..."

Actions to perform before re-calibrating:

Check ink cartridge expiration: Verify if any ink cartridges have expired.
If you replace an expired cartridge, note that approximately two Power Cleans are required to flush the old ink from the system.
Shake all the ink cartridges well to prevent sediment buildup and ensure optimal print quality. Regular shaking (at least once a week) is recommended.
Check the nozzle pattern: In ColorProof go to Printer > Maintenance: Print Nozzle Pattern (or on the printer display: Select TEST PRINT > NOZZLE CHECK > PRINT)
If any lines are disrupted, clean the print heads: In ColorProof go Printer > Maintenance: Power Clean Print Heads (or clean specific color pairs that need cleaning)
Please deactivate the device's lateral feed adjustment: Printer display > Roll Paper > Advanced Paper Settings > Lateral Feed Adjustment > off
Please enable RIP priority: General Settings > System Administration > Paper Feed Settings Mode > RIP Priority > ON
Paper feed adjustment: See detailed description below.
Align the print heads: On the Printer display go to Menu > Paper Setting > Roll paper > Print head alignment > Uni-D alignment > Auto adjustment

After completing these steps, reattempt calibration.

Download the GMG Paper Feed Adjustment Check PDF from our website:
https://sdla.webservice.gmgcolor.com/Printer%20Utilities/Epson%20SureColor%20P%20paper%20feed%20adjustment/GMG_Epson_Print_Quality_Check_V1.pdf
Follow the document’s instructions to cut the 280 mm paper feed check line.
Use a scanner and measure the line in Photoshop.
Refer to the table in the PDF to enter the corresponding value in the Advanced Media Settings for your printer in ColorProof.

Re-calibrate the printer after adjusting the paper feed.

GMG Paper Feed Adjustment Check