HP Designjet T2500 eMultifunction Printer series - Manual (Page 175)

Calibrate the scanner
Your scanner has been calibrated at the factory, and theoretically CIS scanners do not need to be recalibrated
during their lifetimes. Nevertheless, because of environmental changes, your scanner may start showing
image defects that can be easily corrected by recalibrating the scanner. The whole procedure takes less than
10 minutes, and you are recommended to recalibrate the scanner whenever you see some undesired artifact
or a lack of quality in scanned files or copies, bearing in mind the limitations of CIS technology already
explained in this guide. If you perform calibration successfully and still have concerns about the image
quality, please read
Troubleshooting scan-quality issues on page 201 in order to detect whether you are
facing a product limitation, and may want to consider buying a CCD scanner.
To calibrate the scanner
1. Clean the scanner. See Clean the scanner’s glass plate on page 157 .
2. Go to the front panel and press , then , then Image Quality Maintenance > Calibrate
scanner.
3. Follow the instructions in the front panel.
The supplied maintenance sheet required to perform scanner calibration looks like this:
Load the maintenance sheet into the scanner face up, centered and with as little skew as possible. Once the
calibration is finished, the maintenance sheet should be carefully placed into its solid cover, and saved in a
fresh and dry place. Otherwise, it could be damaged, which could affect the operation of your scanner in the
future. Check that the maintenance sheet is not dirty, wrinkled, scratched or folded before calibrating the
scanner. If necessary, call HP support and ask for a new maintenance sheet.
If calibration fails
1. Ensure that the printer is turned on and ready for normal operation.
2. Ensure that the scanner is working correctly. To test it, scan a small document to file.
3. Ensure that the scanner is clean before calibration. If in doubt, clean the scanner and restart the
calibration process.
4. Eject and reload the calibration sheet, checking that it is clean, in good condition, face up and perfectly
centered in the scanner.
5. If the above steps do not help, eject the sheet and restart the printer (turn off and on). When the system
has restarted, repeat the calibration.
6. If you cannot perform the calibration successfully in three consecutive attempts, call HP support and
report the error code that appears in the front panel.
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