Fax error messages on the printer control panel
Error Message:
Remote Fax Error
Fax Mode Unsupported
Unsupported Compression
Unsupported Resolution
Unrecoverable Fax Error
Fax Modem Error
Phone Line is connected to the incorrect jack on the back of the machine.
Digital line detected
What it indicates:
The receiving fax machine cannot receive the fax. The error on the receiving end could be due to several factors.
The receiving fax machine does not support color fax or the scan resolution of the document that you are sending.
The fax modem of the receiving fax machine does not support data compression. Fax modems compress data to speed up transmission, but the receiving fax modem needs to have the same compression code.
The receiving fax machine does not support the scan resolution of the document that you are sending.
The fax modem encountered critical errors.
The fax modem of the printer may be busy, or the fax modem may have encountered problems during transmission.
The telephone cable is connected to the wrong port on the back of the printer.
The printer is connected to a digital line.
Possible solutions:
•Resend the fax. There may have been a problem with the quality of the connection.
•Decrease the transmission speed of your fax modem.
•Register your user information. In some countries, you cannot send a fax without registering your fax name and fax number. Some fax machines also block faxes without sender information.
•Enable Auto Fax Conversion. The printer automatically converts color faxes to black and lowers the scan resolution of the document.
•Lower the fax quality.
•Reformat the document on
•Lower the transmission speed of the fax modem, and then resend the fax.
•Enable Auto Fax Conversion.
•Lower the fax quality.
•Enable Auto Fax Conversion.
Turn off the printer, turn it back on, and then resend the fax.
Turn off the printer, turn it back on, and then resend the fax.
Connect the phone cable to the 
port on the back of the printer.
The printer is an analog device and must be connected to an analog line. To connect the printer to a digital line, you must use a digital line converter or a filter.
For more information, see the ”Setting up the printer to fax” section.
Troubleshooting
