OKI 460 Benutzerhandbuch

165 • Troubleshooting

If a problem occurs, read through the list of problems and solutions before calling for 

service.

Check the power cable and wall outlet. Make sure that the telephone line (not external 

telephone or handset) is connected to the LINE socket on the back of the machine. If 

an external telephone is installed, lift the handset and check for a dial tone. If there 

is no dial tone, there may be a problem with the telephone line. If there is a dial tone, 

the MFP may be using the wrong dialling method (pulse or tone) for the region. If 

alternating tones are heard instead of dialling pulses and the region uses pulse 

dialling, change the call parameters.
The display shows a communications error. This indicates any of a number of 

problems:
• The MFP may be incompatible with the remote machine, or the remote machine 

may not be able to perform the function requested of it such as polling or 

confidential faxing.

• The remote machine may also be out of paper or experiencing a paper jam.
• Bad telephone line conditions can also cause communication errors. Try sending 

the fax again and check to make sure that the correct telephone number is being 

dialled.

• If a prefix number must be dialled to get an outside line, or if the call is to an 

international destination, a pause may need to be entered after the dial prefix or 

international dialling code to tell the machine to wait for a dial tone. If there are 

frequent problems communicating with a particular remote machine, try 

programming the telephone number into a speed dial key, and then change the 

parameters for that key.

• Lastly, either the local or remote machine may require servicing. Try sending a fax 

to another location to check the local MFP.

If the faxed document has small type, complex illustrations, photos, or is very light 

or very dark, try changing the fax quality and density settings. Copy the document 

on the machine to determine how it will transmit. The problem may be caused by 

telephone line interference. Try sending the document again later.

Make sure that the document is loaded correctly before faxing; with text face UP in 

the ADF or face DOWN on the glass.