Well... here it is :
The POWER Lamp Flashes Orange
An error has occurred in the printer. The number of flashes indicates the type of error, as outlined below. Check the cause and take the appropriate action.
When a printer error occurs, the POWER
lamp flashes. The number of flashes indicates the type of error that has occurred. Count the flashes and take the appropriate action to correct the error.
Two flashes: Printer is out of paper /Paper does not feed
Reload paper to the sheet feeder or cassette and press the RESUME button.
Three flashes: Paper jam/Paper output tray is closed
If paper is jammed, remove the jammed paper, reload paper in the printer, and then press the RESUME button. If the paper output tray is closed, open it.
See Paper Jams
Four flashes: Empty ink tank
Press the RESUME button to resume printing with an empty ink tank. Replace it with a new ink tank immediately after the printing. It may damage the printer if you continue printing with an empty ink tank.
Five flashes: Print head not installed/Print head not installed correctly/Print head is defective
Install the Print Head. If the Print Head is already installed, remove the Print Head and check the electrical contacts for foreign matter, then reinstall.
After reinstalling the Print Head, you may need to realign it.
If this error still remains, the Print Head may be damaged. Contact a Canon service representative.
Six flashes: Inner cover error
To print on paper:
Close the inner cover. Then press the RESUME button to start printing.
Do not move or close the inner cover during printing. It may damage the printer.
Seven flashes: The CD-R or DVD-R is not set on the CD-R tray
Reset the CD-R tray feeder with a CD-R tray containing a CD-R or DVD-R, and then press the RESUME button. Printing will resume.
This function only works with models that support CD-R printing.
Eight flashes: Waste ink absorber almost full
The printer has a built-in waste ink absorber for the ink used during print head cleaning. Eight flashes indicates that the waste ink absorber is nearly full. Press the RESUME button to cancel the error so you can continue printing. Before the waste ink absorber becomes completely full, contact a Canon service representative.
Canon recommends that you call for service as soon as this error occurs. Once the waste ink absorber becomes completely full, printing will no longer be possible.
Nine flashes: A specified period of time has lapsed without receiving no response from the digital camera / The digital camera or digital video camcorder connected is not compatible with this printer
Disconnect the camera cable, press the printer's RESUME button and reconnect the cable.
If the error is still not solved, there is a possibility that you are using a digital camera or digital video camcorder that is not supported by this printer. Use a digital camera or digital video camcorder compatible with this printer.
Ten Flashes: Cannot print on both sides of the page
The size of paper may not be compatible with automatic duplex printing. For information on the size of paper compatible with auto duplex printing, see "Automatically Printing on Both Sides of the Page." Pressing the RESUME button will discharge the paper, and restart printing from the front side of the next paper. The reverse side will not be printed when an error occurs.
Eleven flashes: Cannot perform automatic print head alignment correctly
Possible causes are as follows:
A4 or Letter-sized paper is not loaded on the sheet feeder.
Ink has run out or ink tanks are not installed correctly.
See Ensure that the ink tank is installed properly.
Ink level is low.
Print Head nozzles are clogged.
Press the RESUME button.
For information on how to print a nozzle check pattern, see "Printing the Nozzle Check Pattern."
The paper output slot has been exposed to a strong light source preventing correct print head alignment.
Press the RESUME button to resolve the error. Align the printer so the paper output slot will not be exposed directly to a strong light source.
After carrying out the above measures, if the problem continues after aligning the print head again, press the RESUME button to resolve the error, and then perform manual print head alignment. For details on manual print head alignment, see "Aligning the Print Head."
POWER lamp flashes alternate green and orange:
An error that requires contacting a Canon service representative may have occurred.
Disconnect the printer cable from the printer, and then turn the printer off and unplug the printer from the power supply. Plug the printer back in and turn the printer back on after leaving it for a while.
If the problem remains, contact a Canon service representative.