Troubleshooting Scanners

Trouble using scanners? Refer to the guide below – it could resolve the issue you are facing.

Q. “Sometimes my printer does not work when connected in parallel with a scanner”

A. This problem is usually related to the order the printer and scanner are turned on. You should always turn the printer on first, then the scanner, and then the computer. Your scanner must always be switched on and connected for the printer to work. 

Q. “My scanner does not communicate with my computer”

A. Make sure your scanner is on with a solid green light before switching your computer on. Also, make sure you use the cable that was provided with the scanner. Do not substitute or add any extensions to the cable. 

Q. “My scanner takes a long time to calibrate”

A. The scanner is designed to run on an Enhanced Parallel Port (EPP). To achieve the best performance, you must set the parallel port mode in your computer’s CMOS to EPP mode, and set your EPP type to 1.7. Although the scanner will work on other modes, it will be a lot slower. 

Q. “lt takes a very long time for my scanner to scan an image”

A. This could be the result of your computer’s printer port not being set to EPP mode. Refer to your computer’s User Guide or contact your computer vendor on how to set your printer port to EPP mode. 

Q. “The images are not clear and have dots on them when I view them on my monitor”

A. This could be the result of your display setting. Make sure your display is set for 16-bit, 24-bit or 32-bit mode. You can check/change this setting by clicking your right mouse button anywhere on your desktop screen and choosing “Properties” from the menu that appears. Go to the “Settings” tab and change this option. 

Q. “When I print a photo, it has dots all over it.” 

A. When printing photographs using an Inkjet printer, make sure to use Photo Quality Glossy paper for best results. Inkjet printers cannot properly print photos on regular or coated paper. 

Q. “Why does a scanned image look much larger on screen than the original ?”

A. When displaying an image on the screen at scale 1:1, image pixels are translated directly into monitor pixels. This means that when the scan resolution is higher than the monitor resolution, the image appears larger on-screen than the original dimensions. For example, when you scan a 4″ by 6″ photo at 160 dpi (which means to produce a 640 pixels by 960 pixels image) and then display it on an 80 dpi monitor, it appears to occupy an 8″ by 12″ area on screen. 

Q. “My scanned images look blurry” 

A. This may be because you have not set the proper display resolution, set your display property to High Color (16-bit). And allow the scanner to warm-up for a couple of minutes.  

Q. “I get a ‘ Not Enough Memory ‘ message”

A. This is usually because you have not enough free space on your hard disk. Use a disk utility to free some space on your hard disk, or try to scan the image again at a lower DPI and at a lower color depth, for example, gray-scale. 

Q. If your scanner gives a ‘Scanner Access failed’ or a ‘Scanner not found’ message

A. This can be because one of the following reasons:

  1. The interface card is not installed properly
  2. The interface card’s address conflicts with other hardware
  3. The scanner is not switched on and ready
  4. The SCSI cable is not firmly connected from the card to the scanner
  5. Your scanner was not switched on before your computer started.


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