Canon MX850 Manuale Utente

Troubleshooting

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The machine is not powered on.

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You cannot send faxes if the power is turned off. Press the ON/OFF button to 
turn the power on.

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If you disconnected the power cord without turning off the power (a mode 
button is lit), reconnect it, then the power is turned on automatically.

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If you disconnect the power cord after pressing the ON/OFF button to turn off 
the power (all mode buttons are not lit), reconnect it, then press the ON/OFF 
button to turn on the power.

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If the power was turned off due to power failure, etc., the power is 
automatically turned on when the power failure is recovered.

The document is being sent from 
memory.

When the In Use/Memory lamp is flashing, another document is being sent 
from memory. Wait until the machine finishes sending it.

The telephone line is connected to the 
External Device Jack.

Reconnect to the Telephone Line Jack. Refer to your setup sheet or see 
“Preparing the Machine for Fax” on page 57.
If you still cannot send a fax, there is a problem with the telephone line. Contact 
your telephone company and the manufacturer of your terminal adapter or 
telephone adapter.

The telephone line type is not set 
correctly.

Check the telephone line type setting and change it as necessary. See “Setting 
the Telephone Line Type” on page 60.

Dial tone detect is set to ON.

Resend the fax after a while. If you still cannot send the fax, set Dial tone 
detect to OFF. Refer to “Dial tone detect” in “Device Settings” of the User’s 
Guide on-screen manual.

The fax number is not correctly 
registered in a speed dial.

Make sure that the fax number is correctly registered when speed dialing. See 
“Registering Recipients for the Speed Dial” on page 71.

There was an error during 
transmission.

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Check the LCD for an error message. See “An Error Message Is Displayed 
on the LCD” on page 133.

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Print the Activity report and check for an error. See “Printing the Activity 
Report Manually” on page 103.

The telephone line is not connected 
correctly.

Check that the telephone line is connected correctly to the proper jack. If so, 
then there is a problem with your telephone line. Contact your telephone 
company.

The document is not loaded properly.

Remove the document then reload it on the Platen Glass or in the ADF. See 
“Handling the Original Document” on page 16.

There was a printer error.

Check an error message on the LCD, then resolve the problem. See “An Error 
Message Is Displayed on the LCD” on page 133.
If you are in a hurry, press the Stop/Reset button or the OK button to close the 
message, then send faxes.

The document is not loaded correctly, 
or the Platen Glass, the inner side of 
the Document Cover, or the ADF is 
dirty.

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Remove the document, then reload it on the Platen Glass or in the ADF. See 
“Handling the Original Document” on page 16.

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Clean the Platen Glass, the inner side of the Document Cover, or the ADF 
(see “Cleaning Your Machine” on page 125) and reload the document. See 
“Handling the Original Document” on page 16.

The image quality setting or the scan 
contrast setting is not suitable for the 
document.

On the LCD, set an image quality suitable and a scan contrast suitable for the 
document. See “Before Sending Faxes” on page 81.

The original document is loaded with 
the wrong side facing upwards.

When loading the document on the Platen Glass, the side to be scanned should 
be face down. 
When loading in the ADF, the side to be scanned should be face up.