HP Designjet T7200

Service calibrations
The printer has several calibration procedures that must be performed under certain conditions.
The following is a list of all internal service calibrations available in the printer. See
Entering the Service
Calibrations menu on page 115.
NOTE: Remember that certain calibrations are required even if an assembly has been disassembled to gain
access to another assembly or component.
1. Paper Advance Calibration See Paper-advance calibration on page 115
The purpose of this Service Calibration is to calibrate the nominal advance of the paper. This calibration
is necessary to control the exact movement of the paper in order to avoid print-quality problems like
banding.
2. Drop Detector Calibration
See Drop Detector calibration on page 118
The purpose of this Service Calibration is to calibrate the Drop Detector (located in the Service Station)
in relation to the Carriage Assembly.
3. Line Sensor Calibration
See Line Sensor calibration on page 120
The purpose of this Service Calibration is to calibrate the intensity of the Line Sensor. An incorrect
calibration can result in edge-detection failures during paper loading and incorrect reading of prints
that are used for alignment or calibration.
4. Calibrate Rewinder
See Calibrate Rewinder on page 123
The purpose of this Service Calibration is to calibrate the Rewinder Motor.
5. Primer Calibration
See Primer calibration on page 123
The purpose of this Service Calibration is to calibrate the Primer.
6. Reset Vacuum Calibration
See Reset vacuum calibration on page 128
The purpose of this Service Calibration is to reset the nominal values of the Vacuum Calibration. Should
be used only if the vacuum fans are working, but the vacuum pressure is incorrect and there are
carriage crashes.
7. Platen Blue Line Calibration
See Platen blue line calibration on page 129
The purpose of this Service Calibration is to calibrate the blue line which is marked on the Print Platen.
8. OMAS Calibration
See OMAS Calibration on page 130
The purpose of this Service Calibration is to calibrate the OMAS Module.
If all the calibrations need to be performed (for example, when both the HDD and the ISS PCA have been
replaced), you should perform them in the following order:
●
Vacuum Calibration
●
Drop Detector/Service Station Calibration
●
Line Sensor Calibration
●
Paper Advance Calibration
●
Platen Blue Line Calibration
●
Calibrate Rewinder
114 Chapter 6 Service calibrations ENWW