HP LaserJet Pro M521 Multifunction Printer series - Manual (Page 220)

d. Open the Fax Speed menu.
e. Select the correct setting.
● Turn off the Error Correction option.
a. From the Home screen on the product control panel, touch the Setup button.
b. Open the Service menu.
c. Open the Fax Service menu.
d. Open the Error Correction menu.
e. Select the Off setting.
NOTE: Turning off the Error Correction option can reduce image quality.
● If the error persists, contact HP. See www.hp.com/support/ljmfpM521series or the support flyer
that came in the product box.
No dial tone
● Make sure that the telephone cord is connected to the correct port on the product.
● Make sure that the telephone cord from the product is connected directly to the wall telephone
jack.
● Check for a dial tone on the phone line by using the Start Fax button.
● Disconnect the product telephone cord from the wall, connect a telephone to the phone jack on the
wall, and try making a voice call.
● Disconnect the telephone cord from both the product and the wall and reconnect the cord.
● Make sure that you are using the telephone cord that came with the product.
● Connect the product phone cord to a jack for another phone line.
● Check the phone line by using the Run Fax Test option from the Service menu on the control panel.
a. From the Home screen on the product control panel, touch the Setup button.
b. Open the Service menu.
c. Open the Fax Service menu.
d. Select the Run Fax Test item.
The Fax is busy message appears
● Try sending the fax again.
● Call the recipient to ensure that the fax machine is on and ready.
● Check that you are dialing the correct fax number.
206 Chapter 9 Solve problems ENWW