Epson SureColor F7170 User Manual page 146

10. At the front side of the printer, keep the adjustment paper taut and check the positions
of the white line on the platen and the line drawn in Step 8.
If the drawn line and white line are misaligned as shown in the illustration below,
proceed to Step 11. If they are aligned, proceed to Step 12.
11. While checking the state of the two lines on the front side of the printer, use the
hexagon wrench to adjust the screw on the rear side of the printer so that the drawn line
aligns with the position of the dotted line.
If the drawn line is below the white line, rotate the adjustment screw counterclockwise.
If the drawn line is above the white line, rotate the adjustment screw clockwise. One
turn of the screw moves the line about 1 mm (0.04 inch).
Problem Solver 146