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The problem is with the cable connection from main board to the scanner unit. try to reset it. And also do take a cotton swab and little amount of Iso-propane and clean the scanner LEDs on top. And do remember to clean the glass well also try put a little oil to the gears in the bottom of the scanner unit.
Adjusting Output (Scan) Resolution
By changing the resolution, you can set how clear the image is going to be. The higher the resolution, the clearer (but the larger) the scanned image is. The resolution can be changed before scanning.
(Note) If the resolution is doubled, the image data will be quadrupled. If the data is large, problems such as slow processing speed or lack of memory may occur. To change standard scan settings using MP Navigator, click here To change more advanced scan settings using the scanner driver, click here Using MP Navigator
Place the document face-down on the platen glass.
Launch MP Navigator.
On the Windows desktop, double-click the 'MP Navigator 2.0' icon.
in the Windows taskbar, click 'Start', click '(All) Programs', 'Canon
Utilities', 'MP Navigator 2.0' folder, then 'MP Navigator 2.0' icon.
Click 'Scan Photo/Document'.
Display varies according to the printer model.
When the Scan Photo/Document window is displayed, click 'Specify'.
Display varies according to the printer model.
When the Scan Settings window is displayed, select the resolution in Scanning Resolution drop-down.
Select from the following scanning resolutions: [Text(OCR)]: 300/400/600 Other: 75/100/150/200/300/400/600
If necessary, set other items as well.
In the Scan Photo/Document window, click 'Scan' to start scanning.
To fix the colored lines on a copy page do the below steps
Disconnect the power cord, wait five seconds, and then plug it back in. This will reinitialize the unit and force the scanner to calibrate again.
Examine the scanner glass and white scan backing. Clean the scanner glass and scan backing if they are not clean. To clean the scanner glass and scan backing, use a soft cloth towel slightly dampened with clean water.
With the product turned on, open the scanner cover and check the bulb assembly. If the scanner bulb is not lit, the unit must be serviced.
Verify that the alignment page is placed on the scanner glass or in the automatic document feeder (if equipped) correctly. Place the printed side down.
Make a copy of the alignment page. The unit will make a copy even if the alignment message is displayed. Compare the copy to the original. If vertical lines appear in the copy, check to see if the scanner assembly requires cleaning. If cleaning the scanner assembly does not correct the problem, service the product.
Although different scanner has different option still I am giving you the general method of scanning.
Put the photo on the scanner (photo face down touching the glass of the scanner) - look the cover is perfectly placed and no light is entering inside of the scanner. Now run the scanner software - select scan item as "Photo" (other options are text or documents etc), select the option "Color" (other option is Black and white or gray ). Select the resolution more than 200 dpi (more dpi will give better output), give path where the file will be saved after scanning or keep it default, choose the file type JPEG is better (other options may be BMP, TIF etc). First you get preview - look the expected scan output - if required you adjust or lace the photo on the scanner better way - then again get preview - if you are satisfied you may select the portion out of the whole preview page for scanning - now click scan. It will give JPEG file in the specified location.
I called technical support for this issue previously with my brother mfc. It would only do this during color scanning. b&w scanning was just fine. The tech support put me through resetting the reference point of the scanner through a series of button pressing and closing and opening the paper feeder. I kept gettting the same lousy results. Then they determined that the scanner module needs replacing and I needed to take to the nearest service center.
It is important that the item you scan comes in close contact with the scanner glass. If the resulting scanned image is not clear, check to see that the item is in full contact with the scanner glass.
The scanner uses optical character recognition (OCR) to convert text on a page to text that you can edit on your computer.
If you scan text but cannot edit it, make sure that you make the following selections during scanning:
Scanned text might not appear on your computer exactly as it appeared on the original, especially if the original contains faint or smudged text. For example, some characters might be incorrect or missing. As you edit the text, compare the scanned text against the original, and then make corrections as necessary.
To change text scanning options, click the Scan Document Settings button in the initial What are you scanning? screen.
The OCR software is installed by default when you install the HP Scanning software during scanner setup. If you use the Custom option when installing the software, you can choose not to install the OCR software. Try reinstalling the software using the default install options.
Received fax is unreadable or blurry Please go through the checklist below to see if the suggested action(s) can resolve the issue.
* Make sure the copy function is working well. * Print a Clean nozzle page from the Maintenance menu. If the printout has unexpected white or color horizontal streaks or missing portions, print the Clean nozzle page again. If you are still experiencing streaks or mission portions, you may need to replace your cartridge(s). * The cartridges may need to be aligned. * You may need to ask the sender to increase their fax quality.
Sent fax is unreadable or blurry.
1. If the receiving party indicates that the fax output is unreadable or blurry, you may want to try increasing the fax quality. 2. Check the scanner glass for excess amounts of smudges and/or fingerprints. If the scanner glass needs cleaning, moisten a clean, lint-free cloth and gently wipe the scanner glass. Make sure the scanner glass is dry before scanning the next document.