Service Calibrations

24Load the Calibration Pattern following the instructions on the Front Panel. Once the Calibration Pattern is loaded correctly, the following message will be displayed on the Front Panel. Press the OK key to continue.

25The Printer will scan the Calibration Pattern which could take several minutes. Once the calibration is completed successfully, the following message will be displayed on the Front Panel. Press the OK key to continue.

If the Paper Advance Calibration fails for any reason, a warning message will appear on the Front Panel. In this case, try the following:

„Check that the Calibration Pattern was not incorrectly cut (trimming the actual pattern) during the media load process. If this is the case, perform the Paper Advance Calibration again from step 1.

„Perform a Line Sensor Calibration. See Line Sensor Calibration on page 4-15.

„Replace the Line Sensor. See Line Sensor (T1120/T1120ps) on page 6- 157.

„If the problem continues, replace the Media Advance Driver. See Media Advance Drive on page 6-218.

Drop Detector Calibration

The purpose of this Service Calibration is to calibrate the Drop Detector (located in the Service Station) in relation to the Carriage Assembly. There are two menu options to calibrate the Drop Detector:

„Calibrate Drop Detector

„Reset Calibration Flag

Always perform the Reset Calibration Flag calibration BEFORE calibrating the drop detector.

Service calibrations also need to be performed after removing or replacing certain printer components. If you have removed or replaced printer components, check the Service Calibration Guide to Removal and Installation on page 6-5 to see which tests and calibrations you need to perform.

Reset Calibration Flag

1In the Service Calibrations submenu, scroll to Drop Detector Calibration

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HP Designjet T Series — Service Manual