HP LaserJet M4345 Multifunction Printer series - Manual (Page 237)

Faxes are transmitting or being received very slowly.
Cause Solution
The resolution at which the fax was sent or is being received
is very high. A higher resolution typically results in better
quality, but also requires a longer transmission time. If you are receiving the fax, call and ask the sender to
decrease the resolution and resend the fax. If you are
sending, decrease the resolution or change the Page
Content mode setting. See the fax guide for information
about changing the settings.
A poor telephone-line connection is forcing the device fax
and the sending or receiving fax machine to slow down the
transmission to adjust for errors. Cancel and resend the fax. Have the telephone company
check the telephone line.
Faxes are not printing at the device.
Cause Solution
There is no media in the input trays. Load media. Any faxes received while the input trays are
empty are stored and will print after the trays have been
refilled.
The Schedule Printing of Faxes mode is enabled. Faxes will
not print until it is disabled Disable the Schedule Printing of Faxes mode. See the fax
guide for information about changing the setting.
The device toner level is low, or it has run out of toner.
The device stops printing as soon as it is low on toner or
runs out of toner. Any faxes received are stored in memory
and are printed after the toner has been replaced.
Replace the print cartridge.
ENWW Solve fax problems 225