Canon printer PIXMA MX850 User Manual

							
137
Troubleshooting
“Received in memory.” If the machine receives a fax under one of the following conditions, the machine 
will not be able to print the received fax and will store it in its memory. When the 
problem is resolved as described, the fax stored in memory is printed 
automatically.
zInk has run out while receiving a fax: replace the ink tank. See “Replacing an 
Ink Tank” on page 107.
NoteYou can set to print the received fax forcibly even if an ink has run out.
However, a part of contents or all contents of the fax may not be printed since 
the ink has run out. And also the contents of fax will not be stored in memory.
In addition, if ink has already run out, it is recommended that  OFF be selected 
for  Auto print received  in RX settings  to store the received fax in memory 
once and print the fax manually after replacing the ink tank.
Refer to “Auto print received” in “Device Settings” of the  User’s Guide on-screen 
manual.
z Paper has run out while receiving a fax: load the paper and press the  OK 
button.
z Paper of size other than A4, Letter, or Legal is loaded: load A4, Letter, or 
Legal-sized paper.
z OFF  is selected for  Auto print received : select ON, and print the faxes 
stored in memory from the  Memory reference screen. Refer to “Auto print 
received” in “Device Settings” of the  User’s Guide on-screen manual.
z You pressed the  Stop/Reset button to cancel printing of a fax: press the  FA X 
button.
NoteWhen you did not print the fax stored in memory (e.g., when you did not resolve 
the problem by pressing the  Stop/Reset button), you can delete or print the fax 
stored in memory later. See “Document Stored in Memory” on page 99.
“Busy/no signal” zThe telephone number you dialed is busy.
Try dialing again after waiting for a moment. See “Resending Faxes 
(Redialing a Busy Number)” on page 87.
z The fax number dialed was incorrect. 
Check the fax number and dial again.
z The recipient’s fax machine did not respond (after all automatic redialing 
attempts).
Contact the recipient and have him/her check the fax machine. For an 
overseas call, add pauses to the registered number.
z The recipient is not using a G3 machine.
The machine cannot send or receive documents to/from the fax machine 
incompatible with G3 standard. Contact the recipient and ask him/her to 
check that the fax machine is G3 compatible.
z The touch tone/rotary pulse setting on your machine is incorrect.
Set your machine to the setting that matches your telephone line. See 
“Setting the Telephone Line Type” on page 60.
“Memory is full.” The machine’s memory is full because it has sent/received too many  documents, or a detailed document.
zWhen sending faxes, divide them to resend.
z When receiving faxes, print or delete documents in the machine’s memory, 
then ask the sender to resend the fax.
See “Document Stored in Memory” on page 99.
“Check the page size and press OK.” Paper of size other than A4, Letter, or Legal is loaded. zWhen feeding from the Rear Tray, load A4, Letter, or Legal-sized paper.
z When feeding from the Cassette, load A4 or Letter-sized paper.
MessageAction 
						

							
138Troubleshooting
LCD Cannot Be Seen At All
An Unintended Language  Is Displayed on the LCD
CauseAction
The machine is not powered on or the 
LCD is in the screen-saver mode. z
If all the lamps on the Operation Panel are off
The machine is not powered on. Connect the power cord and press the  ON/
OFF  button. The machine will power on and the LCD will display a message.
z If one of the mode buttons (e.g., the  COPY button) is lit
The LCD may be in the screen-saver mode. On the Operation Panel, press a 
button other than the  ON/OFF button.
See “Screen-saver Mode” on page 15.
CauseAction
The language you want to be displayed 
is not selected. Select the language you want to be displayed according to the following 
procedure.
(1)
Press the  COPY button, wait for about 5 seconds, then press the  Menu 
button.
(2) Press the  ] button twice to select  , then press the  OK button.
(3) Press the  ] button once to select  , then press the  OK button.
(4) Press the  } button five times, then press the  OK button.
If the Bluetooth unit is connected to the machine, press the  } button seven 
times, then press the  OK button.
(5) Use the  { or  } button to select the language you want to be displayed, then 
press the  OK button. 
						

							139 Troubleshooting
Cannot Install the MP Drivers
CauseAction
Unable to proceed beyond the Printer 
Connection screen.If you were unable to proceed beyond the Printer Connection screen, make 
sure that the USB cable is securely plugged into the USB port of the machine 
and is connected to the computer, and then follow the procedure below to 
reinstall the MP Drivers.
In Windows Vista, “The printer is not detected. Check the connection.” may 
be displayed depending on the computer you use. In this case, wait for a while. 
If you still cannot proceed to the next step, follow the procedure below to 
reinstall the MP Drivers.
(1)Click Cancel on the Printer Connection screen.
(2)Click Start Over on the Installation Failure screen.
(3)Click Back on the screen that appears next.
(4)Click Exit, then remove the CD-ROM.
(5)Turn the machine off.
(6)Restart the computer.
(7)Make sure you have no application software running.
(8)Follow the procedure described in your setup sheet or the Network Setup 
Guide to reinstall the MP Drivers.
Installation does not start automatically 
when the Setup CD-ROM is inserted 
into your computer’s disc drive.
(1)Click Start then Computer.
In Windows XP, click Start then My Computer.
In Windows 2000, double-click the My Computer icon on the desktop.
(2)Double-click the CD-ROM icon   on the displayed window.
If the contents of the CD-ROM are displayed, double-click MSETUP4.EXE.
(1)Double-click the CD-ROM icon   displayed on your desktop to start 
installation.
NoteIf the CD-ROM icon is not displayed, perform the following.
– Remove the CD-ROM from your computer, then insert it again.
– Restart your computer.
If the icon is still not displayed, try different discs and see if they are displayed. If 
other discs are displayed, there is a problem with the Setup CD-ROM. Contact 
your Canon service representative. 
						

							
140Troubleshooting
Cannot Connect to Computer Properly
„Printing or Scanning Speed Is Sl ow/USB 2.0 Hi-Speed Connection Does 
Not Work
„ “This device can perform faster” Message Is Displayed
Installation procedure not followed 
correctly. Follow the procedure described in your setup sheet or the 
Network Setup Guide 
for proper installation.
If the MP Drivers were not installed correctly, uninstall the MP Drivers, restart 
your computer, and then reinstall the MP Drivers. Refer to the  PC Printing Guide 
on-screen manual.
NoteIf the installer was forced to be terminated due to a Windows error, the system 
may be in an unstable condition and you may not be able to install the MP 
Drivers. Restart your computer before reinstalling.
CauseAction
Your system environment is not fully 
compatible with USB 2.0 Hi-Speed. If your system environment is not fully compatible with USB 2.0 Hi-Speed, the 
machine will operate at a lower speed provided under USB 1.1. In this case, the 
machine operates properly but printing speed may slow down due to 
communication speed.
Check the following to ensure that your system environment supports USB 2.0 
Hi-Speed connection.
z
The USB port on your computer supports USB 2.0 Hi-Speed connection.
z The USB cable, and the USB hub if you are using one, support USB 2.0 Hi-
Speed connection.
Be sure to use a certified USB 2.0 Hi-Speed cable. We recommend the cable 
to be no longer than around 10 feet / 3 meters.
z The operating system of your computer supports USB 2.0 Hi-Speed 
connection.
Obtain and install the latest update for your computer.
z The USB 2.0 Hi-Speed driver operates properly.
Obtain the latest version of the USB 2.0 Hi-Speed driver compatible with your 
hardware and install it on your computer.
ImportantFor details on USB 2.0 Hi-Speed of your system environment, contact the 
manufacturer of your computer, USB cable, or USB hub.
CauseAction
Your system environment is not fully 
compatible with USB 2.0 Hi-Speed. Your system environment is not compatible with USB 2.0.
See “Printing or Scanning Speed Is Slow/USB 2.0 Hi-Speed Connection Does 
Not Work” on page 140.
CauseAction 
						

							
141
Troubleshooting
Print Results Not Satisfactory
If the print result is not satisfactory such as  white streaks, misaligned lines, and uneven colors, 
confirm the paper and print quality settings first.
z Check 1: Do the page size and media type settings match the size and 
type of the loaded paper?
When these settings are incorrect,  you cannot obtain a proper print result. If you are printing a 
photograph or an illustration, incorrect paper type  setting may reduce the quality of printout color. 
Also, if you print with an incorrect paper type  setting, the printed surface may be scratched. In 
borderless printing, uneven coloring may occur depending on the combination of the paper type 
setting and the loaded paper.
z Check 2: Did you set the print quality setting appropriately?
Select a print quality option suitable to the paper and image for printing. If you notice blurs or 
uneven colors, increase the print quality setting and try printing again.
* When printing from a PictBridge compliant devic e, set the print quality setting by using the 
Operation Panel on the machine. You cannot ma ke this setting from a PictBridge compliant 
device.
* You cannot change the print quality setting w hen printing from a wireless communication 
device.
The method to confirm the paper and print qualit y settings differs depending on what you do with 
your machine.
z Check 3: If the problem is not resolved, there may be other causes.
See also the sections below.
z“Printing Does Not Start/Printing Is Blurred/Co lors Are Wrong/Straight Lines Are Misaligned” 
on page 142
z “White Streaks” on page 142
z “Printed Paper Curls or Has Ink Blots” on page 142
z “Printed Surface Is Scratched/Paper Is Smudged” on page 143
z “Colors Are Uneven or Streaked” on page 144
To copy or to print from your 
memory card by operating 
the machine
Confirm by using the Operation Panel on the machine.
Refer to the 
User’s Guide  on-screen manual.
To print from a PictBridge 
compliant device Confirm by using your PictBridge 
compliant device or the Operation 
Panel on the machine.
See “Printing Photographs Directly  from a PictBridge Compliant 
Device” on page 51.
To print from a wireless 
communication device Confirm by using the Operation Panel on the machine.
Refer to “Printing Photographs from a Wireless Communication 
Device” in the 
Users Guide on-screen manual.
To print from a computer Confirm by using the printer driver. Refer to the PC Printing Guide  on-screen manual. 
						

							
142Troubleshooting
„Printing Does Not Start/Printing Is Blurred/Colors Are Wrong/Straight 
Lines Are Misaligned
„ White Streaks
„ Printed Paper Curls or Has Ink Blots
CauseAction
The media is loaded with the wrong 
side facing upwards. When using paper with one printable surface, make sure that the paper is 
loaded in the Rear Tray with the printable side facing up or in the Cassette with 
the printable side facing down.
Printing on the wrong side may cause unclear prints or prints with reduced 
quality.
Refer to the instruction manual supplied with the paper for detailed information 
on the printable side.
Ink tank is empty. See “An Error Message Is Displayed on the LCD” on page 133 to identify the ink  error, and then take the appropriate action depending on the error condition.
The protective film is remaining. Make sure all of the protective film is peeled off and the air hole is exposed, as  illustrated in (A). If the orange tape is left as in (B), pull the orange tape and 
remove it.
(A) Correct
L-shaped air hole is exposed.
(B) Incorrect
The tape is not peeled off.
Print Head nozzles are clogged. See “When Printing Becomes Faint or Colors Are Incorrect” on page 114 and  perform any necessary maintenance operation.
Print Head is misaligned. If you did not align the Print Head after installation, straight lines may be printed  misaligned. Make sure to align the Print Head after you install it.
See “Automatic Print Head Alignment” on page 119 and perform Automatic Print 
Head Alignment. If this does not solve the problem, see “Manual Print Head 
Alignment” on page 120 and perform Manual Print Head Alignment.
CauseAction
Print Head nozzles are clogged. See “When Printing Becomes Faint or Colors Are Incorrect” on page 114 and perform any necessary maintenance operation.
CauseAction
Paper is too thin. When printing data with high color saturation such as photographs or images in deep color, we recommend using Photo Paper Pro or other Canon specialty 
paper. See “Paper Handling” on page 21.
Printing graphics with the  Intensity 
setting set too high. Especially if you are using plain paper to print images with high intensity, the 
paper may absorb too much ink and become wavy, causing paper abrasion.
When copying, see “Making Copies” on page 35 and reduce the intensity 
setting. Then try printing again.
When printing from your computer, refer to “Print Results Not Satisfactory” in the 
User’s Guide
 on-screen manual.
(A) (B) 
						

							
143
Troubleshooting
„ Printed Surface Is Scratched/Paper Is Smudged
CauseAction
Printing on inappropriate type of paper.
zCheck to see if the paper you are printing on is not too thick or curled.
See “Paper Handling” on page 21 to make sure that the paper you are using 
is suitable.
If the paper is curled, see “Paper is curled.” on page 143 to correct paper 
curl.
z When performing Borderless Printing, print quality may be reduced at the top 
and bottom edges of the paper. Make sure that the paper you are using is 
suitable for Borderless Printing. 
For details, refer to “Printing Area” in the  User’s Guide on-screen manual.
Paper is curled. If you are using paper with either any of the corners or the whole printing  surface curled, the paper may become dirty, not feed properly, or both. Use such 
paper after correcting paper curl as follows.
(1)With the printing side (A) facing up, cover the paper with a fresh sheet of 
plain paper to avoid staining or scratching the surface.
(2) Roll up the paper in a direction opposite to paper curl as seen below.
(3) Check to see that the paper curl is within approximately 0.08 to 0.2 inches / 2 
to 5 mm (B) in height.
We recommend printing curl-corrected paper one sheet at a time.
NoteDepending on the media type, the paper may be smudged or may not be fed 
properly even if it is not curled.
In such case, follow the procedure described above to curl the paper before 
printing. This may improve the print result.
Printing on thick paper. Selecting the  Prevent paper abrasion setting will widen the clearance between 
the Print Head and the loaded paper. If you notice abrasion even with the media 
type set correctly to match the loaded paper, set the machine to prevent paper 
abrasion by using the Operation Panel on the machine or the printer driver.* 
* Deactivate the  Prevent paper abrasion  setting once printing is complete. If 
not, this setting remains enabled for all subsequent print jobs. 
z Setting with the Operation Panel on the machine  
Press the  Menu button, select  Maintenance/settings , Device settings , and 
Print settings  in this order, and then set  Prevent paper abrasion to ON . For 
details, refer to “Device Settings” in the  User’s Guide on-screen manual.
z Setting with the printer driver  
Refer to “Print Results Not Satisfactory” in the  User’s Guide on-screen 
manual.
Printing beyond the recommended 
printing area. If you are printing beyond the recommended printing area of your printing paper, 
the lower edge of the paper may become stained with ink.
Resize your original document in your application software.
For details on recommended printing area, refer to “Printing Area” in the 
User’s 
Guide  on-screen manual.
(1) (2)
(A)
(B)
(A) 
						

							
144Troubleshooting
„Colors Are Uneven or Streaked
The Print Result Not Sa tisfactory When Copying
If these do not resolve the problem, also see  “Print Results Not Satisfactory” on page 141.
Paper Feed Roller is dirty. Clean the Paper Feed Roller. Cleaning the Paper Feed Roller will wear the 
roller, so perform this procedure only when necessary.
For details on cleaning, see “Cleaning the Paper Feed Roller (Roller Cleaning)” 
on page 127.
Inside of the machine is dirty. Performing duplex printing may leave some ink inside the machine, causing  printouts to be smudged. In this case, perform Bottom Plate Cleaning to clean 
the inside of the machine.
For details on cleaning, see “Cleaning the Inside of the Machine (Bottom Plate 
Cleaning)” on page 128.
NoteTo prevent the inside of the machine from getting stained, set the page size 
correctly.
Printing graphics with the  Intensity 
setting set too high. Especially if you are using plain paper to print images with high intensity, the 
paper may absorb too much ink and become wavy, causing paper abrasion.
When copying, see “Making Copies” on page 35 and reduce the intensity 
setting. Then try printing again.
When printing from your computer, refer to “Print Results Not Satisfactory” in the 
User’s Guide
 on-screen manual.
CauseAction
Print Head is misaligned. See “Automatic Print Head Alignment” on page 119 and perform Automatic Print 
Head Alignment. If this does not solve the problem, see “Manual Print Head 
Alignment” on page 120 and perform Manual Print Head Alignment.
Print Head nozzles are clogged. See “When Printing Becomes Faint or Colors Are Incorrect” on page 114 and  perform any necessary maintenance operation.
CauseAction
The original document is not loaded 
correctly.Check that the original is loaded correctly on the Platen Glass or in the ADF.
See “Handling the Original Document” on page 16.
The original document is loaded with 
the wrong side facing up. When loading the original on the Platen Glass, the side to be copied should be 
face down.
When loading the original in the ADF, the side to be copied should be face up.
The original document is a printout 
from this machine. Print quality may be reduced if you copy a printout. 
Instead of copying a printout, print the original directly either from the digital 
camera, memory card, or your computer.
The Platen Glass, the inner side of the 
Document Cover, or the ADF is dirty. Clean the Platen Glass, the inner side of the Document Cover, or the ADF.
See “Cleaning Your Machine” on page 125.
CauseAction 
						

							
145
Troubleshooting
Printing Does Not Start
CauseAction
Ink tank is empty. See “An Error Message Is Displayed on the LCD” on page 133 to identify the ink 
error, and then take the appropriate action depending on the error condition.
Ink tank not installed in proper position. Open the Scanning Unit (Printer Cover) and check the ink lamps. If there is still sufficient ink but its ink lamp is flashing red, an ink tank may be 
installed in a wrong position.
Confirm that the ink tanks are installed in the appropriate positions. See 
“Replacing an Ink Tank” on page 107.
Ink tank is not installed securely. Open the Scanning Unit (Printer Cover) and check the ink lamps. If the ink lamp is not lit, press the   mark on the ink tank until it clicks into 
place. The ink lamp lights up red when the ink tank is fully inserted.
Unnecessary print jobs are left in 
queue. / Computer problems. Restarting your computer may solve the problem.
If there are any unnecessary print jobs, follow the procedure below to delete 
them.
(1)
Open the printer properties dialog box.
Refer to “Opening the Printer Properties Dialog Box Directly from the Control 
Panel” in “Opening the Printer Properties Dialog Box (Windows)” of the 
User’s Guide  on-screen manual.
(2) Click the  Maintenance  tab and then  View Printer Status .
The printer status monitor is displayed.
(3) Click  Display Print Queue .
(4) Select  Cancel All Documents  on the Printer menu.
You may not be able to select this depending on the privileges of the 
account.
(5) When the confirmation message is displayed, click  Ye s.
The print jobs are deleted.
(1) Click the printer icon in the Dock to display the list of print jobs in progress.
(2) Select the print job to delete and click  .
The print jobs are deleted.
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.
NoteWhen printing large data such as a photo or graphics, it may take longer to start 
printing. 
						

							
146Troubleshooting
Machine Moves But Ink Is Not Ejected
Paper Does Not Feed Properly
CauseAction
The protective film is remaining. Make sure all of the protective film is peeled off and the air hole is exposed, as 
illustrated in (A). If the orange tape is left as in (B), pull the orange tape and 
remove it.
(A) Correct
L-shaped air hole is exposed.
(B) Incorrect The tape is not peeled off.
Print Head nozzles are clogged. See “When Printing Becomes Faint or Colors Are Incorrect” on page 114 and  perform any necessary maintenance operation.
Ink tank is empty. See “An Error Message Is Displayed on the LCD” on page 133 to identify the ink  error, and then take the appropriate action depending on the error condition.
CauseAction
Printing on inappropriate type of paper. Check to see if the paper you are printing on is not too thick or curled.
See “Paper Handling” on page 21 to make sure that the paper you are using is 
suitable.
If the paper is curled, see “Paper is curled.” on page 143 to correct paper curl.
Paper Feed Roller is dirty. Clean the Paper Feed Roller. Cleaning the Paper Feed Roller will wear the  roller, so perform this procedure only when necessary.
For details on cleaning, see “Cleaning the Paper Feed Roller (Roller Cleaning)” 
on page 127.
Paper not loaded properly. Make sure of the following when you load paper in the machine. zWhen loading two or more sheets of paper, align the edges of the sheets 
before loading.
z Always load the paper in portrait orientation, either in the Rear Tray or 
Cassette, regardless of the printing orientation.
z When loading paper in the Rear Tray, load the paper with the print side facing 
UP. Align the right edge of the paper stack against the Cover Guide and slide 
the Paper Guide so that it just touches the left edge of the stack.
z When loading paper in the Cassette, load the paper with the print side facing 
DOWN. Align the right edge of the paper stack against the right edge of the 
Cassette and slide the Paper Guides against the left and bottom edges of the 
stack.
z When loading paper, make sure that the paper is not set over the Load Limit 
Mark.
For details on loading paper, see “Loading Paper” on page 26.
(A) (B)