HP 640 Fax series User Manual page 61

Problem
The machine does not send anything. Check that the document is loaded face down.Send should
You cannot poll another machine.
The fax you received has blank bits
on it.
Spots or lines missing from the fax
you receive.
You are receiving poor quality copies. The fax machine sending to you may have a dirty scan glass.
Some of the words on the fax you
received appear stretched.
Your machine does not make copies. Make sure your document is loaded face down.
There are lines on copies or
documents you send.
The machine dials a number, but fails
to make a connection with a remote
fax machine.
You cannot store a document in
memory.
Blank areas appear at the bottom of
each page or on continuation pages,
with only a small strip of material
printed at the top.
Image TCR is not working
Solution
appear in the display after it dials. Check if the machine to
which you are sending can receive your fax.
The fax machine you are polling may be using a poll code
(password).
The machine sending to you may be faulty. A noisy phone line
can cause line errors. Check your machine by making a copy.
Check if the print cartridge is ok by making a copy. See
Maintain the print cartridge
telephone company to see if your phone line is noisy.
Also, check with the telephone company to see if your phone
line is noisy.
The machine sending to you had a temporary document jam.
Check your scan glass for marks and clean it (see
document scanner area
The remote fax machine may be turned off or unable to answer
incoming calls. Speak with the other fax operator to solve the
problem.
There may not be enough memory available to hold the
document you want to store. If the display shows a Memory
Full message, do the following until you can store your
document in memory:
Print all unprinted faxes in memory (see
page 40.
Delete unneeded polling faxes, broadcast faxes, or delayed
To cancel the scheduled job
faxes (see
You may have selected the wrong paper size setting. To select
the proper paper size, see
You have the resolution set to SUPER FINE. Set the resolution to
FINE.
on page 47. Check with the
on page 49).
Reprinting faxes
on page 34).
on page 11.
Paper Size
Care and maintenance 55
Troubleshooting
Clean the
on