HP 220 - Manual (Page 148)

ALT
Setup-Sheet
Calibration
7Ć10 Calibrations C3187Ć90000
SetupĆSheet Calibration
This calibration calibrates the power of the LED situated on the cartridge carriage, for better
scanningof the setup sheet.
Perform the setupĆsheet calibration whenever:
D The EEROM is cleared
D The cartridge carriage is replaced
D The optical sensor on the cartridge carriage is replaced
D Problems frequently occur with setupĆsheet scanning
To calibrate the LED, perform the followingprocedure:
1 Enter service mode D page 7Ć2.
2 Load a blank sheet of paper.
o not use vellum, transparent or polyester media, or recycled paper.
3 Hold down the
ALT
key and press
Setup-Sheet Calibration
.
The plotter positions the cartridge carriage over the media. The carriage remains
there for about 1 minute with the red L lit, while the plotter performs the
calibration. The plotter then ejects the sheet.
To verify that the calibration has been performed correctly, plot a service configuration
plot, D page 8Ć23, and look at the field entitled Setup Sheet LED Calibration formula."
A formula appears in this field. If the calibration has not been performed correctly, a
message, saying that the LED has not been calibrated for setup sheet, appears.