HP LaserJet Pro 400 MFP M425 - Manual (Page 204)

Perform a fax diagnostic test
From the product control panel, you can run a diagnostic test that provides information about the product
fax settings.
1. From the Home screen on the product control panel, touch the Setup button.
2. Open the following menus
● System Setup
● Self Diagnostics
3. Touch the Run Fax Test button to start the test. The product prints a test page that shows test results.
188 Chapter 8 Solve problems ENWW