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  1. #1
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    Original left on glass or detecting A4 with no paper C368

    Hello everyone! i have a c368 with the original left on glass when i lower the adf. what i have done so far

    the machine has only 1 original sensor for a3 in the right side of the platen glass
    firmware update to the latest as today.
    downgrading firmware to previus version
    cleaned 3-4 times glass and mirrors,
    replaced slit glass, main platen glass, reed magnetic switch, and adf from other machine that it works
    uninstall totally the adf
    done non image area and proceeed to the whole adf adjustment as it was first time

    the only way that it doesnt detect paper (a4) is when i trigger the swith in the back right and the reed switch with a magnet without adf on
    but without platen glass installed.

    is there any other option to do?

  2. #2
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    Re: Original left on glass or detecting A4 with no paper C368

    Had it before, completely clean the platen glass, any scratch or dirt will trogger the size sensors. Remove the plastic on the side, the 2 metal clips, and clean the glass on both sides.

    Sent from my motorola one 5G UW using Tapatalk

  3. #3
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    Re: Original left on glass or detecting A4 with no paper C368

    Quote Originally Posted by lazymangr View Post
    Hello everyone! i have a c368 with the original left on glass when i lower the adf. what i have done so far

    the machine has only 1 original sensor for a3 in the right side of the platen glass
    firmware update to the latest as today.
    downgrading firmware to previus version
    cleaned 3-4 times glass and mirrors,
    replaced slit glass, main platen glass, reed magnetic switch, and adf from other machine that it works
    uninstall totally the adf
    done non image area and proceeed to the whole adf adjustment as it was first time

    the only way that it doesnt detect paper (a4) is when i trigger the swith in the back right and the reed switch with a magnet without adf on
    but without platen glass installed.

    is there any other option to do?
    Can you use the adf or it show the same original left on glass message?

    Sent from my motorola one 5G UW using Tapatalk

  4. #4
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    Re: Original left on glass or detecting A4 with no paper C368

    I used 2 different adfs platen glass and slit glass from other working c258 machines to check. I done all the sane procedures. Now I am in the insane spectrum

  5. #5
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    Re: Original left on glass or detecting A4 with no paper C368

    paper size detection is done by the length sensor and the CCD for width.. You may need to replace the CCD..E

  6. #6
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    Re: Original left on glass or detecting A4 with no paper C368

    Can also be caused by the df sitting to high at the rear.

    The black actuator at the rear operates too late fooling the machine into thinking the df is a piece of paper.

    The fact that it works when you manually operate the switches makes me think this may be the problem.

    Try adjusting it a bit lower using the adjusting screws.

  7. #7
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    Re: Original left on glass or detecting A4 with no paper C368

    This can be ruled in or out by simply measuring the height at which the paper size is detected. PS 202 can be checked in service mode. It should actuate at 14.5 degrees, (20 with a platen cover) E

  8. #8
    Service Manager 2,500+ Posts
    Original left on glass or detecting A4 with no paper C368

    Synthohol's Avatar
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    Re: Original left on glass or detecting A4 with no paper C368

    If it hasn't been mentioned before, a dirty white sheet on adf will make it thing there is paper.
    We know a thing or two because we've seen a thing or two.

  9. #9
    Service Manager 2,500+ Posts tsbservice's Avatar
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    Re: Original left on glass or detecting A4 with no paper C368

    Quote Originally Posted by Synthohol View Post
    If it hasn't been mentioned before, a dirty white sheet on adf will make it thing there is paper.
    He swapped 2 ADFs...he did almost everything. Interesting when problem arised. It's not brand new model now. What's condition of the machine in question? Where it's?
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

  10. #10
    Service Manager 2,500+ Posts tsbservice's Avatar
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    Re: Original left on glass or detecting A4 with no paper C368

    Try to play with Original Size Detection - table 1 or table 2.
    A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.

    Blessed are they who can laugh at themselves, for they shall never cease to be amused.

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