HP LaserJet Enterprise 500 MFP M525 - Manual (Page 297)

Check the error-correction settings
The Error Correction Mode setting might be disabled, which can reduce image quality. Follow these
steps to enable it.
1. From the Home screen on the product control panel, scroll to and touch the Administration button.
2. Open the following menus:
● Fax Settings
● Fax Send Settings
● Fax Send Setup
● General Fax Send Settings
3. Select the Error Correction Mode option. Touch the Save button.
Send to a different fax machine
Try sending the fax to a different fax machine. If the fax quality is better, the problem is related to the
initial recipient's fax machine settings or supplies status.
Clean the pickup rollers and separation pad in the document
feeder
1. Lift the document-feeder latch.
ENWW Improve fax quality 283