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Non-discharge detection error 2F2F
As a result of nozzle checking made by the non-discharge detection unit:
- All 640 nozzles in a nozzle train are non-discharging.
- At least 50 nozzles have been found mismatched in a nozzle train of 640 nozzles since the last session of detection.
The change (between non-discharging and discharging nozzle counts) noted since the last session of nozzle checking is recorded as a mismatch.
Please follow the steps below to determine the cause for the error:
1. Turn off printer, wait, and then turn on again.
2. Check the tubes to see if it is filled with ink, and also check the joints.
3. Check to see if the linear encoder film is properly installed.
4. Check the linear encoder film for defects (such as soiling, flaws and incorrect setup).
5. Check to see if there is not any foreign mater near the non-discharge sensor.
6. Check service mode nozzle patterns.
7. Check to see if the ink is a genuine supply. (Recommend the use of the genuine ink).
8. Perform manual Print Head Cleaning A & B and check nozzle patterns again.
9.
Check the face of the Print Head (to see if it is not flawed by paper or foreign matter).
10. After removing and inserting the print head, start in service mode to clear the error. Then, restart the printer in normal mode to check to see if the error recurs.
11. Check Flexible cable with Flat Cable Checker (FCC Checker) for possible micro cracks.
In some cases air, instead of ink, passes through Head Management Sensor during nozzle check and the sensor does not detect ink. Reseating or replacing the Print Head and cleaning or replacing the Head Management Sensor could resolve this issue.
FCC Checker AY3-4504-000
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Canon has added a protective mylar to the Linear Scale parts supply.
If it is not removed, the above error code may appear intermittently.
The scale is blurred with this mylar attached, causing Linear Encoder to falsely read it. Please remove it prior to installing a new scale and/or check to see if one is mounted on the existing printer.
also//
Make sure the ink tubes mounted to the Sub Tank are aligned properly
If one or more tubes is restricted >it will not fill with ink.
The picture below shows the correct mounting position.
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