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Canon printer PIXMA MX850 User Manual

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Page 151

147
Troubleshooting
Paper Does Not Feed  from the Paper Source 
Specified in the Printer Driver
Too much paper loaded. Make sure that the paper stack does not exceed the paper load limit. However, 
proper feeding of paper may not be possible at this maximum capacity 
depending on the type of paper or environmental conditions (either very high or 
low temperature and humidity).
In such cases, reduce the sheets of paper you load at a time to around half of 
the paper load limit.
For details on loading...

Page 152

148Troubleshooting
Paper Jams
Important
When you turn off the machine to remove the jammed paper, make sure of the following.
zWhen you are printing from the computer, cancel the print job before turning off the machine. Refer to 
“Printing from Your Computer” in the  User’s Guide on-screen manual. 
z While the machine is receiving a fax (in memory), you cannot turn off the machine. Turn it off after 
receiving the fax. Do not disconnect the power cord while the machine is receiving a fax. If you...

Page 153

149 Troubleshooting
Landscape credit card-sized paper 
jammed inside the machine.Do not load credit card-sized paper in the landscape orientation.
Remove the paper following the procedure below.
(1)Load a single sheet of the same paper in the Rear Tray in portrait orientation.
Do not load it in the landscape orientation.
(2)Turn off the machine.
(3)Turn on the machine.
The paper is fed and then pushes out the jammed paper as it ejects.
All print jobs in queue are canceled. Reprint if necessary.
If you...

Page 154

150Troubleshooting
Paper jammed inside the machine at 
the transport unit. Remove the paper following the procedure below.
(1)
Open the Rear Cover.
(2) If you can see the jammed paper, slowly pull the paper out.
z Be careful not to touch the components inside the machine.
z If you cannot pull the paper out, close the Rear Cover, turn the machine off, 
and turn it back on. The paper may be ejected automatically.
(3) Close the Rear Cover.
(4) If you were not able to remove the paper out in step (2),...

Page 155

151
Troubleshooting
Paper jammed inside the machine at 
the Duplexing Transport Unit. Remove the paper following the procedure below.
(1)
Remove the Cassette.
If the paper is loaded in the Rear Tray, remove the paper from the Rear Tray 
and close the Rear Tray Cover.
(2) Turn off the machine.
(3) Stand the machine with the left side down.
CautionWhen standing the machine, make sure that the Scanning Unit (Printer Cover) 
is closed securely and the machine does not fall over.
(4)Slowly pull the jammed...

Page 156

152Troubleshooting
Document Jams in the ADF
Important
When you turn off the machine to remove the jammed document, make sure of the following.
zWhile the machine is receiving a fax (in memory), you cannot turn off the machine. Turn it off after 
receiving the fax. Do not disconnect the power cord while the machine is receiving a fax. If you 
disconnect the power cord, all the documents stored in memory are deleted.
CauseAction
The document remains in the ADF 
because the Stop/Reset button is 
pressed...

Page 157

153
Troubleshooting
Document jams in the ADF (Document 
Tray). Remove the document following the procedure below.
(1)
If printing is in progress, press the  Stop/Reset button.
(2) Turn off the machine.
(3) If a multi-page document is loaded, remove any pages other than the 
jammed page from the ADF, then open the Document Feeder Cover.
(4) Raise the Paper Release Lever (A), then remove the jammed page from 
under the roller to the Document Feeder Cover side.
(5) Pull out the jammed document from the...

Page 158

154Troubleshooting
Document jams in the ADF (inner side). Remove the document following the procedure below.
(1)If printing is in progress, press the Stop/Reset button.
(2)Turn off the machine.
(3)If a multi-page document is loaded, remove any pages other than the 
jammed page from the ADF.
(4)Open the Document Output Slot.
(5)Open the Document Cover.
(6)Insert your hand into the Document Output Slot, then while pushing up the 
part above the paper feed rollers with your fingers, pull out the document...

Page 159

155 Troubleshooting
Document Jams in the ADF (Document 
Output Slot).If the document is jammed in the Document Output Slot, open the Document 
Output Slot as shown in the figure below and pull out the document.
zWhen rescanning the document after clearing the error, rescan it from the 
first page.
If you cannot remove the document or the document tears inside the machine, 
or if the document jam error continues after removing the document, contact 
your Canon service representative.
CauseAction 

Page 160

156Troubleshooting
Message Appears on  the Computer Screen
„Writing Error/Output E rror/Communication Error
CauseAction
The machine is not ready. Check if any lamp on the Operation Panel is lit.
If all the lamps on the Operation Panel are off, press the  ON/OFF button to turn 
on the machine. While the  COPY button is flashing, the machine is initializing. 
Wait until the  COPY button stops flashing and remains lit.
If the  Alarm  lamp is lit orange, an error may have occurred in the machine. For...
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