User's Manual

HP Designjet T Series — Service Manual 4-15
Service Calibrations
6 Once the calibration is completed, OK will be displayed on the Front Panel.
Line Sensor Calibration
The purpose of this Service Calibration is to calibrate the intensity of the line
sensor in the Carriage PCA. An incorrect calibration can result in edge-
detection failures during media loading and incorrect reading of prints that
are used for alignment or calibration.
Perform the Line Sensor Calibration whenever:
 Edge detect procedure fails during media loading.
 Carriage is disassembled or replaced.
 Line Sensor is disassembled or replaced.
 Banding is detected in prints.
 Misalignment between colors is detected.
Service calibrations also need to be performed after removing or replacing
certain pr
inter 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.
Perform the Line Sensor Calibration as follows:
Make sure you load one of the following media into the Printer before
performing this calibration:
 HP Bond Paper.
 HP Glossy Media.
 HP Coated Paper.
 HP Productivity Photo Gloss.
 HP Heavyweight Coated Paper.
 HP Super Heavyweight Coated Paper.
 HP Bright White Inkjet Paper.
1 In the Service Calibrations submenu, scroll to Line Sensor Calibration and
press OK.