Epson SureColor P8570DL 44" Wide-Format Dual Roll Printer with High-Capacity 1.6L Ink Pack System - Manual (Page 428)

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You see a screen like this:
3. Tap the adjustment value area to adjust the value directly, or use the +/- buttons to change the
value.
Shifting the value of the adjustment by 1 will correct the misalignment by approximately 0.1 mm.
Increase the value to correct alignment like this:
Decrease the value to correct alignment like this:
4. Select OK to finish entering the value.