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Kodak Led II 20P head problem


sun360

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I am getting a magenta line over the prints. The line is exactly where the rotor stops(home position) after printing. I think the rotor green led is not off during the rest position. Could anybody please help me with the problem. I have attached the effected prints as well. Line appears in all prints even the calibration prints at exactly same position.

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The lines are continuous and at rotor home position and parallel to rotor. The line is  very fine and straight (single) at first and goes on increasing to two lines and become thicker as I throw more prints. The picture quality is perfect and there is no light leakage because the line appears to be a pure magenta which starts as a single line and then increase to two parallel lines and then to a band as seen on the attached print. It seems like that the rotor is exposing green light when it is at home position after it finishes printing. I have checked all RAMs, EEPROMs on the 100 and 200 boards, also checked the cable from 200 board to 400 stator board (continuty test) and all of them are okay. I cannot isolate if the problem is software or the hardware. Do you know what is the criteria for any led to expose. And one more thing, it is very much similar and at exactly same position to the yellow line which appear on the prints when the circuit breaker is switched off directly without shutting down from the menu. These two problem could have same reasons except that the yellow line disappears after some prints and in my case it doesn't disappear at all. I don't know which component might be defective 100 board, 200, 400 or 500 board, the stator cable or the LED assy itself. Please help.

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I know stator cables can cause peculiar problems.  Usually this results in images with missing colors or areas with no exposure.  Have you watched the lights on the power supply (bottom back of printer)  while it is doing a reset or exposure?  If one of them flashes red while the print head moves past the trouble spot it could be clue.

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The problem is solved after shutting the machine down for 2 days and then started again. The problem as you said must be due to power problem. It all started due to sudden power failures. Had to change nothing everything is fine now. Thanks a lot.

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