Question about Fujitsu fi-5750C Flatbed Scanner

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Error "Back Side Optical Alarm"

After Cleaning optics in the upper unit for lines, now getting message "Back side Optical Alarm". I have reseated all connectors. Is there a CCD Adjustment that could be performed?

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  • Jarratt May 11, 2010

    hi, did you take the camera out and clean it? if so did you remove the mirrors? these mirrors are one sided and you need to make sure you have them the right way up.

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SOURCE: Fujitsu M4097D error about Front side optical alarm

HI,
I work on the fujitsu scanner hotline. This message means that the optical unit needs to be replaced, there will be very little you can do to fix this problem.

Posted on May 04, 2008

  • 16 Answers

SOURCE: Fujitsu FL-4750 Optical alarm (g)

This is usually a main board fault. re solder the legs of the 2 sets of the 3 transistors on the underside of the mainboard. they are the small ones. or replace the main board. let me know how you get on

Posted on Sep 16, 2009

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1 Answer

Backside Optical alarm (G) when using Duplex option


Hi Rasha,

ADF backside scanning optical alarm (upper optical unit ADF) is E3 alarm. When there is an irregularity in the amount of light (ADF back), "E" and "3" will be displayed alternately on the function number display panel of the scanner.

Please check the followings:

1.Does the same symptom occur after turning OFF and ON the scanner?
2. 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.
3. Is the upper Optical unit ADF dirty? Are the cables damaged? Are the connectors connected properly?
4.E3: Is the upper lamp ON? Are the cables damaged? Are the connectors connected properly? Disconnect the SCSI cable and turn the scanner ON. Open the ADF and press ADF cover open sensor as shown below to see if the ADF lamps light which has to be replaced.

I would recommend to contact an authorized FUJITSU scanner service provider or the dealer where you purchased the scanner.

Hope the above information is helpful.

Thanks & regards,

ScanCare

Jun 12, 2013 | Fujitsu fi-4750C Flatbed Scanner

1 Answer

We have a Fuj M4097 ... displaying "Back Side Optical Alarm". Question... would this type of error cause the scanner to not be recognized by the PC? We are receiving this error and the PC seems to...


> Back Side

Obviously, the side opposing the front side of your device.

> Optical

There's a LED (Light Emitting Diode) lamp and a sensor that should be receiving the light emitted by the LED, i.e., when
something on the back is "open" when it should be "closed", or "closed" when it should be "open".

> Alarm

A "not-normal" condition has been detected, i.e., door open.


Check for any doors on the back that may be "ajar".

Power-off the printer. Wait a few seconds. Power-on the printer.

If all else fails, order a service call.

Sep 20, 2010 | Office Equipment & Supplies

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.

Regards,

TechSatya

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

1 Answer

The scanner is reporting an E2 error code when it draws a document in. Any ideas? Re-cycling the power clears error but comes back when I scan. thankyou in advance


Hi,

This error message means ADF front side scanning optical alarm (lower optical unit ADF) which indicates ADF (front) lamp intensity check. Please follow the steps provided below:

1. Is the upper 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. Lower Optical unit ADF may be dirty.
2. Lower 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.

Regards,

TechSatya

Jun 29, 2010 | Fujitsu fi-5750C Flatbed Scanner

1 Answer

Anomaly in the light intensity of ADF front side. Fujitsu 5750c s


Hi, 

This error code denotes ADF front side scanning optical alarm (lower optical unit ADF) which indicates ADF (front) lamp intensity check. Please follow the steps provided below:

1. Is the upper 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. Lower 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. Lower 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 if you have any doubt.

Regards,

TechSatya

Jun 28, 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...


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.

Resolution:

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.

Regards,

Tech Satya

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

1 Answer

Front side optical Alarm


Contaminates on the optical path to the front camera.strip and clean.If its still a problem , check and replace front lamp.(the one in the flatbed area)

Jul 04, 2009 | Fujitsu M4097D IPC Path-Through Flatbed...

2 Answers

Front side optical Alarm


Check this post: http://www.fixya.com/support/t493406-fujitsu_m4097d_error_about_front_side

Jun 23, 2009 | Office Equipment & Supplies

1 Answer

Error Message - Optical Backslide Error


Hi,

The back side means it will be E3 error, then you have to clean the back side optical unit like Glass part, lamp part, ccd unt. dont use Alcohol (IP) for cleaning CCD unit. It will be a risky one.

Another one since it is giving the back side error you can scan by scanning only the front side. i think you may be aware of the front side scanning .

Sep 13, 2008 | Avision AV 610C2 Flatbed Scanner

3 Answers

Fujitsu M4097D error about Front side optical alarm


HI,
I work on the fujitsu scanner hotline. This message means that the optical unit needs to be replaced, there will be very little you can do to fix this problem.

Apr 06, 2008 | Fujitsu M4097D IPC Path-Through Flatbed...

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