Print quality troubleshooting 1 If the Printer is experiencing horizontal misalignment problems, the Alignment Test will show something like this: 2 If the Printer is experiencing vertical misalignment problems, the Alignment Test will show something like this: 3 If the Printer is experiencing bi-directional misalignment problems, the Alignment Test will show something like this: Corrective Action Perform the Printhead Alignment (Main Menu/Image Quality Maintenance/ Align Printheads), using the same paper type with which you were experiencing unacceptable image quality, if feasible (some paper types are not suitable for Printhead Alignment).
This test is designed to check whether the Printheads and the Paper Advance Mechanism are working correctly. This part of the Image Quality Test should NOT be used to check for color consistency or accuracy. Diagnostic Part 3: Printheads & Paper Advance HP Designjet T Series — Service Manual 1-13