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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Re: Fi-4990c problems- front optical sensor

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

Posted on Aug 10, 2007

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How do youfind scan count


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:

1.Turn on the scanner, and confirm if it is connected correctly to your computer.
2.From the "start" menu, select "All Programs", then select "Scanner Utility for Microsoft Windows", then click on "Software Operation Panel"
3.In the dialog box displayed, from the list on the left of the panel, select "Device Setting"
4.Click the "Clear" button beside the replaced consumable under "Page Counter"
5.Click the "OK" button on the displayed confirmation message. The counter is reset to 0
6.Click the "OK" button to close the "Software Operation Panel" dialog box

Hope the above information is helpful.

Thanks & regards,

Jun 04, 2014 | Fujitsu fi-6130 duplex scanner

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Black line 6130


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?

Also, check the mirror of the OPT Unit dirty, clean the mirrors.
Check the connector and check any cables are damaged,if so, then replace the damaged cables.

If the above doesn't help, then the issue may be due Optical unit or Control PCA problem. hence, you may have to seek the help of Fujitsu scanner technicians for rectification.

Hope the above information is helpful.

Thanks & regards,

Apr 25, 2013 | Fujitsu fi-6130 duplex scanner

1 Answer

Error 3

Hi Adil, 

This E3 error message means ADF backside scanning optical alarm (upper optical unit ADF) which indicates ADF (back) lamp intensity check. Please follow the steps provided below:

1. Is the lower glass (white sheet guide)of the reading section dirty?

Open the ADF, and clean the sheet guide (white part) and the glass.

# When operating the scanner, the ADF’s inside glass becomes very hot. Take serious caution as the heat can cause burns. Before you clean the inside of the scanner, turn off its power and unplug the AC adapter from the outlet and wait (at least three minutes) until it gets cold.Be careful not to pinch your fingers when the ADF cover is being closed.
Note: Cleaning should be done approximately every 10,000 sheets scanned, though it may vary depending on types of
documents scanned. More frequent cleaning is necessary when the following types of documents are scanned:
- Smooth surface document such as coated paper
- Documents printed on almost entire surface
- Documents processed with chemical materials such as carbonless paper
- Paper with a high calcium content
- Pages with pencil lead
- Document where toner is not fused sufficiently.

If the above does not help, then the issue is caused by any of the followings for which you may have to contact the Fujitsu Expert/Engineer.

1. Upper Optical unit ADF may be dirty. (Remove any dirt inside of the mirrors and lens of the Optical unit ADF with blow brush. Do not use air sprays which may build up condensation on the mirrors.)
2. Upper lamp may not be functioning properly.
3. The connecting cables might be damaged.
4. The connectors are not connected properly.

Hope the above information is helpful.Please revert you have any doubt.



Jul 02, 2010 | Fujitsu fi-5750C Flatbed Scanner

1 Answer

Has Fujitsu fi-4340c scanner. Worked for a while then it showed Front Side Optical Alarm. I tried to clean sheet path, and replaced roller and pickup pad. Still the same error. Does anyone has the...

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.


If "Front Side Optical Alarm" appeared, clean the glass (small and large one) of the flatbed and carrier unit.
If the issue persists, then check if CCD harness or CR cable is disconnected? Connect the connector.
If the issue persists, then replace Front lamp.
If the issue is not resolved, then replace the Control PCA or Carrier unit or Optical unit.

Pls acknowledge if the issue is resolved.


Tech Satya

Dec 08, 2009 | Fujitsu fi-4340C Flatbed Scanner

1 Answer

Fujitsu FI-4220C only scans one page at a time.

The problem is not just to roll over, be changed and separation pad. These two components change very easily and boxes that are delivered and indications for replacement.
These are the codes for parts:
Pad Assembly - Part Number: PA03289-0111
Pick Roller - Part Number: PA03289-0001
After replacement counters to be reset for each Pieces. Open the scanner properties.

Usually have to display a maintenance message on the computer display, such as: separation pad should be replaced.

If there is to scan any messages like that, you have to clean the sensors around the separation pad. They are round and are getting a little inside. Click on the blue button at the top of the ADF and open the lid.

I hope you was helpful.

Aug 10, 2009 | Fujitsu fi-4220C Flatbed Scanner

1 Answer

Fujitsu fi 4750c scanner error

Try a flatbed scan scan with the cover open.  If you see the lamp come on, it's likely a cable or CCD problem, though it can be caused by a really dirty reference strip or mirrors. I've never seen one that dirty but it's mentioned in the service manual. I have seen lost documents in the ADF unit cause backside optical alarms, but the front unit is protected from this by glass. If the lamp doesn't light, it can be a defective lamp or cable. In all these cases, you'll need a tech onsite. Disassembly of this model is difficult & reassembly is even worse. I wouldn't recommend it even if you're mechanically inclined.

Apr 07, 2009 | Fujitsu fi-4750C Flatbed Scanner

1 Answer

M4099d scanner

Attributed to paper sensor problems.

Clean the little square and round paper sensors under swing arm of
upper feed roller asm.

also clean the clear plastic return reflectors.
these may need changing as they taint after time.

Jan 12, 2009 | Fujitsu M4099D/FI-4990C Scanners

1 Answer


When the scanner scans the first image it will bring in via a set of solenoids a background white Reference metal flap for both rear and front cameras.
The above error comes about when the solenoids are sticking or they have magnetised themselves.
1.Clean the Solenoids.
if scanner still errors .
2. Replace solenoids.

Dec 30, 2008 | Fujitsu M4099D/FI-4990C Scanners

1 Answer

Blank Pages

The scanner's paper sensor may be jammed. IT is sensint there is paper and hence scanning!. Try and fix it. Sensor may be optical or mechanical. If optical remove shreds of paper or dust. If mechanical ensure it moves forward and backward.

S. Mohan. Chennai

May 09, 2008 | Fujitsu fi-5750C Flatbed Scanner

1 Answer

Fujitsu fi-4750C Flatbed Scanner step remove the software from the computer and then reboot. 2nd step install the software. 3rd step try a scan. Still in trouble? 4th step new scanner These items are not repairable.

Jul 01, 2007 | Fujitsu fi-4750C Flatbed Scanner

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