Question about Fujitsu fi-4990C Path-Through Scanner

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Fi-4990c problems- front optical sensor

Hi- Hopefully someone maybe able to help with this problem, after fairly extensive scanning (the counter is reading 178500) the scanner has stopped taking processing additional documents. Mechanically the scanner is working well (it still brings sheets through the machine when conducting paper thickness tests), however upon scanning the documents stay within the hopper by the intial sensors. The subsequent message of 'optical error:front' is now recurring and preventing the additional scanning of sheets. I would be grateful if anyone could point out ways to deal with this problem other than cleaning. I believe the problems could be related to limited memorary levels but I'm not sure. Thanks.

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  • vincent7586 Sep 28, 2008



    After Turning my 4990c on it works well and showed getting ready in manual feeding mode. However when i start to scan it show the error message--"Opitcal Error: Front" and it cannt continue. How / What can i do for that?

    Thanks in advance

    vincent

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Fi-41990 scanner cleans after scanning 100,000 sheet for paper roller the pad cleans after scanning 100,000 sheets feeding path cleans after 200,000 sheets http://www.fujitsu-europe.com/support/scanner/manuals/consumable-option_3-5-8.pdf

Posted on Aug 10, 2007

  • kimberly puddicombe Aug 10, 2007

    did my solution solve your problem

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Hi,

If the scan count of your fi-6130 scanner exceeded 2,00,000 scans, then you may have to replace the consumable parts. After replacement of the consumables, you need to rest the consumable counters. To check/reset the Pick/Brake Roller Counter, please follow the steps provided below:

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Are the scan settings correctly specified for the scanning application software used? Check if interface cable are correctly connected.When the error occurs on ADF front, clean the glass inside of Base Unit. When the error occurs on ADF back, clean the glass of the Upper Unit.Check if any dirt get on the white reference sheet?

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Hi,
Explanation:
Front Side Optical Alarm only generated when start command is received or when white level reference is checked (every 50 scans). CCD output must be above predetermined slice level when reading the white reference. Slice level is set in F/W and compared to the read range values. The read range is approximately pixel 120 to 4800. If CCD output does not reach slice level the AGC tries to adjust the output of the amplifier to exceed the slice level. If any portion of the read range is lower than slice then Optical Alarm is generated. Also, it can be generated by dirty optics or reference, bad lamp or CCD.

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1 Answer

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