HP Designjet T2500 eMultifunction Printer series - Manual (Page 223)

Actions
1. Check the scanner lid sensor by opening the scanner lid and checking that the five CIS modules show
blinking red, green and blue lights alternately. If not, reboot the machine and call HP support reporting
the error appearing at the front panel. If no error is given in the front panel then report “scanner lid
sensor failure”.
2. If all the modules lit up correctly in the previous step, close the scanner lid by pushing it down until you
hear a click. Then calibrate the scanner as indicated in
Scanner maintenance on page 156 and repeat
your scan.
3. If the problem persists, repeat the scan or copy using a higher resolution (High or Max if scanning,
Normal or Best if copying). You should also set background cleaning to 0, or set the content type to
Mixed.
ENWW Defocus, blurring and fading colors 213