HP CC487-91209, Fax Manual, Page: 133 / 168

Problem Cause Solution
Your phone line might be noisy or poor
quality
Try using a lower baud rate to improve
the reliability of transmission. See
maximum baud rate setting.
A call-waiting feature might be active 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.
The fax accessory is receiving faxes but
is not sending them.
If the fax accessory is on a PBX
system, the PBX system might be
generating a dial tone the fax accessory
cannot detect.
Disable the detect dial tone setting.
There might be a poor phone
connection.
Try again later.
The fax machine to which you are
sending might be malfunctioning.
Try sending to another fax machine.
Your phone line might not be working. 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.
Outgoing fax calls keep dialing. The fax accessory automatically redials
a fax number if the Redial on Busy
option is set to on or if the Redial On No
Answer is set on.
This is normal operation. If you do not
want the fax to retry, set Redial on Busy
to 0 and set Redial On No Answer to 0.
Faxes you send are not arriving at the
receiving fax machine.
The receiving fax machine might be
turned off or might have an error
condition, such as being out of paper.
Call the recipient to make sure the fax
machine is turned on and ready to
receive faxes.
A fax might be in memory because it is
waiting to redial a busy number, or
there are other jobs ahead of it waiting
to be sent.
If a fax job is in memory for either of
these reasons, an entry for the job
appears in the fax log. Print the fax
activity log, and check the Result
column for jobs with a Pending
designation.
Error codes
If a fax problem occurs which prevents or interrupts sending or receiving of a fax, an error code is
generated that will help in determining the cause of the problem. Error codes show up in the fax
activity log, the fax call report, and the T.30 Protocol Trace. Print one of these three reports to obtain
the error code. A detailed description of some error codes and the appropriate action can be found at
www.hp.com by searching for your product name.
Fax error messages
When an analog fax is sent or received on an HP LaserJet product, any errors that occur during the
fax process will be displayed on the product control panel and entered into the fax reports. Fax errors
can occur for many reasons and often they are due to interruptions or noise on the telephone
connection. Any error that takes place during the fax process regardless of where it originates will be
displayed by the product.
ENWW Solve fax problems 121