incoming faxs print with lines going through the words

[lorib52]

scanning, copying, content sent from computer all print great.  Fax messages and printouts are barely readable

[TEJ1602]

@lorib52, Welcome to HP Support Community!

Perform a hard reset on the printer-

(1) Turn the printer on, if it is not already on.

(2) Wait until the printer is idle and silent before you continue.

(3) With the printer turned on, disconnect the power cord from the rear of the printer.

(4) Unplug the power cord from the wall outlet.

(5) Wait at least 60 seconds.

(6) Plug the power cord back into the wall outlet.

NOTE: HP recommends connecting the printer power cord directly to the wall outlet.

(7) Reconnect the power cord to the rear of the printer.

(8) Turn on the printer, if it does not automatically turn on.

The printer might go through a warm-up period. The printer lights might flash, and the carriage might move.

Wait until the warm-up period finishes and your printer is idle and silent before you proceed.

Change the fax speed

Higher fax speeds can result in lower fax quality.

To lower the fax speed, find the fax settings on your printer control panel, select Basic Fax Settings, Advanced Fax Settings, or Preferences, select Speed, then select Slow.

These steps might be different for your printer. For specific steps, go to HP Customer Support, type your printer model number, and then click User Guides.

Change the Error Correction Mode setting

Error Correction Mode (ECM) prevents loss of data due to poor phone lines by detecting errors that occur during transmission and automatically requesting retransmission of the erroneous portion. Phone charges are unaffected, or might even be reduced, on good phone lines. Depending on the age and quality of the phone lines, ECM can improve fax quality or cause data loss. The default setting is On.

To turn change the ECM setting, open the fax menu, select Basic Fax Settings, Advanced Fax Settings, or Preferences, select Error Correction Mode, then select On or Off.

These steps might be different for your printer. For specific steps, go to HP Customer Support, type your printer model number, and then click User Guides.

Hope this helps! Keep me posted. 

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