Question about Epson Stylus CX7800 All-In-One InkJet Printer

7 Answers

Scanning trouble PLEASE HELP!!!


The scanner light works and it moves. When the page prints, only approx. 1/4" on one side appears. The rest of the page looks like static on a television with colored streaks in it. We have installed it again and tried everything we know. Can you help.
I'm having the same issue - static appears in place of the scanned image. The white areas show where the scanner correctly pics up the image.

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  • jman2007 Oct 31, 2008

    I made a copy directly from the printer and had the same problem.

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I made a copy directly from the printer and had the same problem.
I've done all the above and still the same problem.
Someone has to solve?
Grateful.

Werner

Posted on Feb 08, 2009

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Try first reinstalling the scanner drivers, just to ensure it is not a controller problem.

If reinstalling drivers does not fix it, then it is either a lose connector/bad wiring inside the scanner.

Or a fault, like faulty scanner pcb, fauslty sensor, faulty scanner engines.

In both case the scanner must be taken apart and tested by a technician.

If you live in US you can call (800)922-8911 [ press 1 then 2 ] to get support.

If you live in a different country, use the Epson website to get support:

Posted on Oct 31, 2008

  • Ginko
    Ginko Nov 01, 2008

    If you get same problem even doing a copy , then it is definitively the scanner CCD array. That is the sensor that take a snapshot of the picture sliding on the document (see here to find out how it works).

    To fisx this the scanner must be taken apart, and the array replaced.

    Some times the array is fine, and you need to replace or put back in place the flat cable connectors that connects to the array.

    This job should be performed by a techincian.


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Hi,

I am afraid that the scanner engine of the Epson CX7800 has sustained a hardware damage. This of course would require a fair familiarity of electronic components/circuitry and safety procedures, use of a DVM and a soldering iron. It would be to your added advantage access to a service manual or at the very least a schematic diagram with voltage readings. Should you be uncomfortable performing a DIY (do-it-yourself), perhaps your best bet would then be to seek the services of a qualified professional.

If you are considering a DIY, pls re-evaluate the cost of repair and the downtime including sourcing of parts. It may be to your advantage to simply replace the unit or request warranty repair/replacement (if still under warranty).

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Oct 22, 2008

  • Louie  Role
    Louie Role Oct 31, 2008

    As initially suggested, it is a hardware problem, the scanner engine.

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Does this happen only while scanning?
How does it work when you print some file from computer?
Please let us know so that we can focus on one of them...
I think you might have did this... Did you try uninstalling and reinstalling the printer/ scanner driver ?
They printer hardware look to be fine...

Did you try scanning to the computer ?
How does the picture look like? same as the one above ?

Posted on Oct 22, 2008

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I wanted t know if the scanner which u r talking about worked correctly
before it had this problem ...........
if yes then there will be no problem with the drivers....
the problem could be either with ur printer

or

with the optical sensors ....

the light getting on or off does not mean that ur sensors are correct ....
try replacing the sensors with some other sensor and see if it is working or not and pls tell if it worked
till hen could u give the Scanners company and model no.

Posted on Oct 22, 2008

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Hello,

Disconnect the scanner and then rest it for a couple of minutes then uninstall the driver and reboot the computer and then reinstall the drivers. note sometime scanner got error due to antivirus activity.

may this help,

melnavz

Posted on Oct 22, 2008

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First try to make a copy from the printer if the copy is fine then there is the problem with drivers , if the copy is blurred or as the same problem then its a hardware problem in the printer ,if the copy is fine then you need to install the lastest drivers from this website install scan drivers :


http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&oid=58773&prodoid=56291070&infoType=Downloads&platform=All



Good luck...

Posted on Oct 22, 2008

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1 Answer

Scanner leaving black streaks


There are two possible fixes.

Download the latest firmware update by CLICKING HERE

The following is provided by courtesy of Lexmark:
Problem Vertical lines; Auto document feeder scan anomaly; ADF scanning problem; Scan issue; Scanner issue; Visible line; Streaks show on page; solid line down the page; Top to bottom line; Smudge runs down the page; Opaque line; Broken line; Bar all the way down the page Solution Overview

This article provides the self-diagnostic steps necessary to evaluate top-to-bottom streaks that appear when copying or scanning.

Important! This is seldom a scanner hardware failure.

The main reason for this anomaly is debris or marks on the scanner glass that is used for Auto document feeder (ADF) page scans.

Printed or Scanned Page Illustration

copyvertstreaks.jpg

Who should consider this article?

Any user of an MFP or All-In-One printer experiencing the following symptoms:

  • -Vertical lines only when using the Autodocument Feeder (ADF).
  • -Observed with any type of scan job (e-mail, ftp, solutions, fax).
  • -However, normal expected output when the page is scanned from the scanner flatbed.



ADF scan behavior

Think of it this way:

  • -The page is pulled from the ADF.
  • -The moving page slides across an ADF-designated portion of glass.
  • -The image sensor, which is located under the glass, reads and interprets the moving page's contents.
  • -Contamination on this ADF glass is seen by the image sensor for the entire length of the page.
  • -The image processor interprets the image sensor's repeated capture of this contamination as a vertical solid line.
  • -Any ADF scan function now exhibits a vertical line.



adfvertscanline.gif




Suggested Diagnosis and Fix




Step Action 1 Locate the portion of the glass designated for ADF scans.
HINT: The glass location differs by model. This area is often separate from the scanner flatbed. Please reference User's Guide for more information if you are having a difficult time locating this designated area.
2 Perform a visual inspection for any of the following recurring culprits:

  • -Clear adhesive tape
  • -Glue
  • -Ink pen
  • -Paper
  • -Marker
  • -White out
  • -Staples
  • -Environmental dust or dirt
HINT: Ink marks can be especially hard to see and almost translucent at first sight. However, the image sensor (CCD) registers them as a mark. 3 Use a clean, soft, moistened cloth to thoroughly clean and remove any marks or debris. 4 Inspect the underbelly or underside of the ADF for any marks or debris. 5 Perform another scan to see if cleaning the glass alleviated the issue. 6 Repeat the procedure if a vertical line still appears.
Remember! Printing and scanning from the scanner flatbed work fine.
7 This time, place an intentional mark on a blank sheet of paper and take note of its location. Now place that sheet of paper in the ADF and make a copy.
8 Evaluate the distance of the vertical line to the your mark. 9 Inspect that area of the glass for further debris or marks and clean as necessary.




Other Possibilities


If... Then... Vertical lines appear only when printing... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear when you lay the page on the flatbed... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support. Vertical lines appear on ADF-fed printed copies, but they do not appear on scan-to-network [e-mail, FTP, folder (PC), solutions]... Consider other printer-related topics such as toner cartridge, charge roll, photoconductor, transfer roll, or fuser. Contact Lexmark Technical Support.


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Checking replaceables

If you experience frequent paper jams or printing problems, check the

number of pages the machine has printed or scanned. Replace the

corresponding parts, if necessary.

1. Press Menu until System Setup appears on the bottom line of the

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