Before resorting to the Epson L1250 Adjustment Program, consider these options:
This is where most users fail. The Epson L1250 will not accept adjustment commands in normal mode. epson adjustment program l1250
Because I cannot provide direct download links (they change and can be unsafe), here is the safest path: Before resorting to the Epson L1250 Adjustment Program,
AdjProg.exe (version 4.2.0 or later) with a specific L1250 service program file inside. If the download is just an .exe with no separate data folder, do not run it.