Xerox 6128MFP User Guide

Transmission is not possible.

The transmission procedure 
may have been 
performed incorrectly.

Check the transmission procedure, 
and then try sending the fax again.

The fax number may be wrong.

Check the fax number.

The one-touch dial key or 
speed dial may be 
incorrectly programmed.

Check that the keys were 
correctly programmed.

The telephone line may be 
incorrectly connected.

Check the telephone line 
connection. If it is disconnected, 
connect it.

There may be a problem with 
the recipient’s fax machine.

Contact the recipient.

Incorrectly configured voice 
over IP (VOIP). Digital phone 
service is often not compatible 
with FAX. 

Install dial-tone phone service, or 
try to troubleshoot FOIP. For more 
information, see:

The received fax is blank.

There may be a problem with 
the telephone connection or 
with the caller’s fax machine.

Check that the machine can make 
clean copies. If it can, have the 
caller send the fax again.

The caller may have loaded the 
pages backward.

Contact the caller.

Faxes cannot be received 
automatically.

The machine is set to receive 
faxes manually.

Set the machine to 
automatic reception.

The memory is full.

Load paper if it is empty, and 
then print the faxes stored in 
the memory.

The telephone line is 
incorrectly connected.

Check the telephone line 
connection. If it is disconnected, 
connect it.

There may be a problem with 
the caller’s fax machine.

Make a copy to check that this 
machine is operating correctly, and 
then, if the copy was printed 
correctly, have the recipient check 
the condition of their fax machine.

Incorrectly configured voice 
over IP (VOIP). Digital phone 
service is often not compatible 
with FAX. 

Install dial-tone phone service, or 
try to troubleshoot FOIP. For more 
information, see:

Symptom

Cause

Solution