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Error code 31 on a konica royal 1500 ''paper mishandled''.

I removed all feed rollers and feed belt to clean and rough up surfaces but it still faults out with error 31. Sometimes it will work using manual feed tray. However, it still gives fault 31 most of the time. I wonder if there is a timing issue when removing the feed roller assembly.

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  • Richard Smith Jan 23, 2009

    Thank you Cogz for your reply. Parts for this machine are hard to find so I am trying to restore the rubber rollers and belt with alcohol based cleaner and wire brushing to rough up surface. Paper actually starts into machine, goes about 80% of the way, stops for a moment then continues on into developer and stops just short of image drum. It is not wrinkled or deformed in any way. Problem is consistent stopping each time at same location.

  • Richard Smith Jan 23, 2009

    You do have a good memory! There was indeed two or three plastic gears I had to JB weld because of cracking. However, They are still holding and we have used the machine for several hundred copies since then. I will locate Precision Roller and try to order these parts. I also installed a new image drum, roller and cleaning blade. I also restrung the chare grid array with new wire. It worked like a brand new machine for a short while. I do have a service manual for the 7033 Konica but nothing for the 1500, not even a parts manual. Thank you for your help. It's an oldie, but a workhorse I am told.


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Have you replaced the paper pick up & paper feed & paper sep. rollers? Also, have you cleaned the paper pick up clutch? The reason it works with the manual feed is that it is not used as much. Also, have you cleaned the rollers with wd-40 or simple green and did it work better, if so you need new rollers. Good Luck

Posted on Jan 23, 2009

  • Chris Coughlin
    Chris Coughlin Jan 23, 2009

    You may want to try "Precision Roller" for the parts they may have them, you are dealing with a old copier. It has been a long time since I've worked on one, but I kinda remember a problem with jamming and it had to do with a gear in the back of the copier, it was a pain to get to, it is behind all of the stuff on the back of the copier, it may have been a torsion spring. May the force be with you to fix that one. LOL


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