Canon IRA c5030 patch sensor value

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  • mikejose
    Technician
    • Oct 2013
    • 35
    #1

    [Error Code] Canon IRA c5030 patch sensor value

    The c5030 service manual states that the Patch Sensor Value: Copier > Display > Dens > Level 2 > P-LED-DA should be 3f or higher. The service manual appears to be wrong. I thought I might have a bad patch sensor on one my machines because it has intermittent E020 errors, but it turns out that all six units show a P-LED-DA value between 18 and 26, well below 3f. So I ran an experiment. I covered the openings on the patch sensor shutter with scotch tape, simulating a sticking shutter or very dirty sensors. After cycling power the P-LED-DA value had risen to 63. Without the tape the value on this machine is 20. So it appears that P-LED-DA should be 3f or LOWER.

    I don't know how to go about informing Canon about this. Maybe someone out there can pass this on to Canon.
    Tags: c5030, imagerunner advanced, patch sensor
    • teckat
      Field Supervisor

      Site Contributor
      10,000+ Posts
      • Jan 2010
      • 16083
      #2
      Re: Canon IRA c5030 patch sensor value

      Originally posted by mikejose
      The c5030 service manual states that the Patch Sensor Value: Copier > Display > Dens > Level 2 > P-LED-DA should be 3f or higher. The service manual appears to be wrong. I thought I might have a bad patch sensor on one my machines because it has intermittent E020 errors, but it turns out that all six units show a P-LED-DA value between 18 and 26, well below 3f. So I ran an experiment. I covered the openings on the patch sensor shutter with scotch tape, simulating a sticking shutter or very dirty sensors. After cycling power the P-LED-DA value had risen to 63. Without the tape the value on this machine is 20. So it appears that P-LED-DA should be 3f or LOWER.

      I don't know how to go about informing Canon about this. Maybe someone out there can pass this on to Canon.
      ---------------------------------------
      Don't believe all u read in a manual

      A normal value is around 20


      When replacing the Patch Sensor unit enter the new Alpha Value in service mode under COPIER > DENS > ALF-C and execute PT-LPADJ in service mode under COPIER > FUNCTION > MISC-P to adjust the Patch Sensor light intensity accordingly.

      Must> After cleaning the sensors and also the white shutters, enter service mode and perform COPIER > FUNC > PT-LPADJ, then perform an auto gradation.

      The Patch Sensor LED light intensity is displayed in service mode level 2 at COPIER > DISPLAY >DENS > P-LED-DA
      **Knowledge is time consuming, exhausting and costly for a trained Tech.**

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