Problems With Sending Faxes - HP LASERJET ENTERPRISE M725dn Troubleshooting Manual

Problems with sending faxes

Problem
Faxes are transmitting very slowly.
Faxes quit during sending.
The fax accessory is receiving faxes but
is not sending them.
462 Chapter 2 Solve problems
Cause
You might be sending a complex fax,
such as one with many graphics.
The receiving fax machine might have a
slow modem speed.
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 there is a poor phone-line connection,
the fax accessory and the receiving fax
machine slow down the transmission to
adjust for errors.
The document might have a gray
background, which can increase fax
transmission time.
The receiving fax machine might be
malfunctioning.
The phone line might not be working.
The phone line might be noisy or poor
quality.
A call-waiting feature might be active.
If the fax accessory is on a PBX system,
the PBX system might be generating a
dial tone the fax accessory cannot
detect.
There might be a poor phone
connection.
The receiving fax machine might be
malfunctioning.
The phone line might not be working.
Solution
Complex faxes take longer to transmit.
The fax accessory only sends the fax at
the fastest modem speed the receiving
fax machine can use. Wait for the fax
transmission to complete.
Decrease the resolution and change the
Optimize Text/Picture option.
Cancel and resend the fax. Ask the
phone company check the phone line.
Use the Image Adjustment feature to
clean up the background shading.
Try sending to another fax machine.
Disconnect the fax accessory from the
phone jack, and connect a phone. Try to
make a phone call to ensure the phone
line is working.
Try using a slower fax speed to improve
the reliability of transmission. Use the
Fax Dialing Settings menu to set the fax
speed for sending faxes.
Verify that the fax telephone line does
not have an activated call-waiting
feature. A call-waiting notice can
interrupt a fax call in progress, which
causes a communication error.
Disable the detect-dial-tone setting.
Try again later.
Try sending to another fax machine.
Disconnect the fax accessory from the
phone jack, and connect a phone. Try to
make a phone call to ensure the phone
line is working.
ENWW