Thanks John for the updates, now the problem you are facing can be caused due to three reasons, one the cartridges, two the printhead and three the encoder or timing strip, as you have already replaced the ink cartridges without any positive result, then it can be the strip or printhead, first we will try to clean the encoder strip, following the steps below and if the problem persist, then you have to clean the printhead using the internal process as well as manually, if still the problem persist, then you have to replace the printhead.Remember these steps are generally used by professionals, so please very careful, when you follow the steps, because if you cannot perform it carefully, then strip can get loose and make the problem worse.
Turn on the unit, then open the print carriage access door. The print carriage moves to the center of the unit. Then look for the encoder strip. It is a semi-transparent or clear plastic strip like the sample image below. How to clean the encoder strip.
1. With the printer on, open the top cover to allow the print cartridge cradle to move to the center of the printer.
2. Unplug the power cord from the printer.
3. Slide the cradle to the far-left position.
4. Identify the semi-clear mylar encoder strip, located just behind the round, metal, cradle rod.
CAUTION: When pulling the cloth along the encoder strip in Step 5, grasp the strip gently, to ensure that the strip does not break. Pull the cloth in a right-to-left direction.
5. Moisten a clean cloth or tissue with water, then gently grasp the strip between the thumb and forefinger, and carefully pull the moistened cloth along the entire length of the strip in a right-to-left direction. Repeat this step with a different portion of the cloth to ensure that all foreign matter is removed.
6. Move the cradle to the far-left position and repeat Step 5 on the right side of the encoder strip, beginning as far right as possible. Again, gently pull the cloth in a right-to-left direction.
7. Allow the encoder strip to dry, or gently dry the encoder strip with a clean, dry cloth or tissue.
8. Position the cradle near the center, and then plug the power cord into the printer.
9. Close the top cover to allow the print cartridge cradle to move back to the right of the printer.
10. Print a self-test to ensure, that the printer is functioning properly.If the problem persist, then open the link below and follow the steps to clean the printhead, using the automated process of the printer.http://kbsupport.cusa.canon.com/system
If still the problem persist, then follow the steps below to remove the printhead from the printer, then open this LINK
and follow the steps to clean the printhead manually.
If you have any further questions, please feel free to let me know…
- Make sure that the power is turned on, and open the Paper Output Tray gently
- Lift the Scanning Unit (Cover), then hold it open with the Scanning Unit Support (A). (The print head will move to the replacement position.)
- Remove all the Ink Tanks in the following manner.
- Push the tab (B) and lift the ink tank to remove.
- Do not touch the Print Head Lock Lever (C).
- Raise the print head lock lever.
- Tilt the print head slightly towards the front of the machine and lift out gently.
Print head nozzles <1> , electrical contacts <2>, or ink supply ports <3>.
*Before proceeding to next step, check the carriage area for packing material, torn paper, etc. and remove if found
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