HP DesignJet T730

The scanner damages some originals
HP is aware that this scanner may cause vertical scratches on inkjet originals on thick glossy paper. Very thin
tracing paper or old originals may also be damaged. This is because CIS technology requires the original to be
held down with high pressure to obtain accurate results and avoid blurring and defocus problems.
If the original you intend to scan is valuable, and if it belongs to one of the types described above (inkjet-
printed, thick, glossy original or old/thin/tracing paper original), HP recommends using a CCD scanner.
Completely wrong colors
If some of the LEDs used for illumination in the scanner scanbars are failing, or the last calibration did not
work correctly, although no error message was given on the front panel, you may experience some
completely wrong colors in your scanned images, as in the example below: original on the left, scanned image
on the right.
1. Restart the scanner by turning it o and on again. If you nd an error message on the front panel during
this operation, call HP support and report the error message.
2. If no error message appears on the front panel during the restart process, try to calibrate your scanner,
as indicated in Calibrate the scanner on page 112, once it is fully functional. If some error message
appears on the front panel, call HP support and report the error, adding that you found it after seeing
“completely wrong colors in the scanned image”.
3. If calibration succeeded, reboot and repeat your scan and check the colors.
4. If the colors are still wrong, analyze the whole diagnostic sheet. Check that you nd completely wrong
colors in the area corresponding to just one of the scanbars, as in the following gure. If so, call HP
support and report “completely wrong colors after calibration”, and report the letter of the scanbar that
is failing (module A in the example).
If all the modules are failing, call HP support and report that.
Vertical distortion
If the lid sensor of the scanner fails, the scanner cannot detect when the lid is open. Hence, you can start a
scan, and at some point nd that the pressure sliders do not move the original through the scanner paper
ENWW The scanner damages some originals 163