Aligning The Printhead From Printer Manager - Sharp FO-2550 Operation Manual

Using print cartridges
5
Enter the two-digit number of the straightest line on the test sheet.
(If the number is less than 10, enter a 0 before the number.)
The display will show:
6
Press the STOP key to return to the time and date display.

Aligning the printhead from Printer Manager

1
From Printer Manager, click the Cartridge tab.
2
Click the Align Cartridge button.
1-16
(Example)
CLEAN NOZZLES