Leading edge back calibration Note Before beginning the leading edge back calibration, you must perform the tray registration calibration on the print engine. To perform the tray registration calibration, touch MENU , then touch CONFIGURE DEVICE , then touch PRINT QUALITY , then touch SET REGISTRATION , then touch SOURCE , and then touch PRINT TEST PAGE . Follow the instructions on the printed registration page to complete the registration setting. Note Make sure you perform the leading edge back calibration for all of the trays. 1 Download the HP LaserJet 9000mfp calibration target and the HP LaserJet 9000mfp calibration values chart.
2 On the MFP to be calibrated, print the calibration target on ledger or A3 paper. See figure 196. 3 Print two copies of the calibration values chart on ledger or A3 paper. 4 Load the calibration target face up, and choose “two-sided original to a one-sided copy” to eliminate any print engine duplexing issues. 5 Copy the calibration target using the ADF backside optical unit. 6 Align the top edge of the copied calibration target to the top edge of the original calibration target. Note Make sure you align the paper edges and not the lines. 7 On the calibration target, compare the line at the top edge of the original to the line at top edge of the copy.
8 Determine whether the copied page needs to be shifted up or down. If the copied page needs to be shifted, determine the required distance in millimeters. 9 Using the two HP LaserJet 9000mfp calibration values charts, determine the value for the leading edge back that will be entered into the service menu. See figure 199. 214 Chapter 7 Troubleshooting C8523-90921