Epson Perfection 640U Reference Manual page 75

Chapter 5
Maintenance and Troubleshooting
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Cleaning the scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Replacing the fluorescent lamp . . . . . . . . . . . . . . . . . . . . . . . 5-4
Removing the Cover for Thick or Large Documents . . . . . . . . . . 5-4
Using the Stand to Hold the Scanner . . . . . . . . . . . . . . . . . . . . . . . 5-6
Transporting the Scanner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Problems and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Error Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Operating Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
The fluorescent lamp does not come on.. . . . . . . . . . . . . . . . 5-9
The scanner does not scan. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
The scanner software does not work properly. . . . . . . . . . . 5-10
Quality Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
The entire image is distorted or blurred. . . . . . . . . . . . . . . . 5-11
Part of the image is distorted or blurred. . . . . . . . . . . . . . . . 5-11
Edges of the document are not scanned.. . . . . . . . . . . . . . . . 5-11
Colors are patchy or distorted at the edges of the image. . 5-12
The image is faint or out of focus. . . . . . . . . . . . . . . . . . . . . . 5-12
The image is too dark. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Straight lines in the image come out jagged. . . . . . . . . . . . . 5-12
The image does not look the same as the original. . . . . . . . 5-13
A line of dots is always missing from the scanned image.. 5-13
When scanning printed matter, textured patterns of dots appear
inside particular areas of the image. . . . . . . . . . . . . . . . . . 5-13
Colors on your monitor are different from those in the original
image.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Printed colors are different from those in the original image.5-14
The printed image is larger or smaller than the original.. . 5-14
Scanned images cannot be printed or come out garbled when
Maintenance and Troubleshooting
5-1