HP Color LaserJet Enterprise Multifunction M680 Printer series - Manual (Page 182)

● 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
Follow these steps if the printed pages have toner smudges or skewed print.
1. Lift the document-feeder latch.
2. Open the document-feeder cover.
170 Chapter 9 Solve general problems ENWW