Left side back calibration Note Before beginning the left side back calibration, 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 left side 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 On the calibration target page, extend the wide line on the top, left corner and the wide line on the top, right corner to the edge of the paper. See figure 197. 5 Using a straight edge, draw a line 1 mm (0.04 inch) in from the top, left edge of the page and from the top, right edge of the page. Make the lines approximately 30 mm (1.2 inch) long. 6 Load the calibration target face up, and choose “two-sided original to a one-sided copy” to eliminate any print engine duplexing issues.
7 Copy the calibration target using the ADF backside optical unit. 8 Align the edge of the thick, black lines on the copied calibration target to the lines drawn on the original calibration target that are 1 mm (0.04 inch) from the edges. Note Make sure that you can see white on both sides of the calibration target. If not, you cannot perform the necessary measurements. 9 On the calibration target, compare the line on the left side of the original to the line on the left side of the copy. See figure 198. 10 Determine whether the copied page needs to be shifted to the left or to the right. If the copied page needs to be shifted, determine the required distance in millimeters.
11 Using the two HP LaserJet 9000mfp calibration values charts, determine the value for the left side front that will be entered into the service menu. See figure 199. 212 Chapter 7 Troubleshooting C8523-90921