Error Messages 
 
M0C3/M0C4/M0C5/M0C6/M0C7  6-18  SM 
Message  Causes  Solutions 
The print cartridge is almost 
empty. 
   
Replace Required Soon: 
Print Cartridge 
Only when using the four-line 
LCD models. 
The print cartridge is almost 
empty. 
Out of Toner: Black 
Only when using the touch 
panel models. 
The machine has run out of 
toner. 
Replace the print cartridge. 
   
Replacement Required: 
Print Cartridge 
Only when using the four-line 
LCD models. 
The machine has run out of 
toner. 
Replacement Required: 
Paper Feed Roller 
The paper feed roller is no 
longer usable, and must be 
replaced. 
Replace the paper feed roller. 
RX Communication Error  A reception error occurred, 
and the fax could not be 
received correctly. 
If possible, contact the sender of the 
fax and ask them to resend it. 
Scan (NW) Disconnected  A scanned file could not be 
sent because the Ethernet 
cable was not connected 
properly. 
Reconnect the Ethernet cable 
properly, and then try the operation 
again. 
Scan (USB) 
Disconnected 
The USB cable was 
disconnected while scanning 
from a computer. 
Reconnect the USB cable properly, 
and then try the operation again. 
Server Connection Failed  A scanned file could not be 
sent because the destination 
could not be reached. 
Confirm that the destination is 
registered correctly, and then try the 
operation again. 
Server Response Error  An error occurred in 
communication with the 
server before beginning 
transmission. 
Confirm that the destination is 
registered correctly, and then try the 
operation again. 
If the problem could not be solved,