HP LaserJet M9040/M9050 Service Manual - Page 357
Leading edge front calibration
View all HP LaserJet M9040/M9050 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 357 highlights
5. Using a straight edge, draw a line 1 mm (0.04 in) 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 in) long. 6. Load the calibration target face up, and choose two-sided original to a one-sided copy to eliminate the possibility of 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 1 mm (0.04 inch) from the edges drawn on the original calibration target. 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. 10. Determine whether the copied page should to be shifted to the left or to the right and by what distance in millimeters. 11. Determine the value for the left side front to enter into the Service menu. Leading edge front calibration NOTE: Before beginning the leading edge front calibration, perform the tray registration calibration on the print engine. Touch Administration, then touch Print Quality, then touch Set Registration, then touch Source, and then select a source. Touch Test Page, and then touch Print. Follow the instructions on the printed registration page to complete the registration setting. Perform this procedure for all trays. 1. Download the MFP calibration target and the MFP calibration values chart. Calibration targets are available at the HP service information Web site. 2. Using the product to be calibrated, print the calibration target on ledger or A3 paper. 3. Print two copies of the calibration values chart on ledger or A3 paper. 4. Load the calibration target face down, and copy it using the ADF front-side optical unit. 5. Align the top edge of the copied calibration target to the top edge of the original calibration target. TIP: Be sure to align the paper edges and not the lines. 6. On the calibration target, compare the line at the top edge of the original to the line at top edge of the copy. 7. Determine whether the copied page needs to be shifted up or down and by what distance in millimeters. 8. Using the two calibration values charts, determine the value for the leading edge front to enter into the Service menu. ENWW Other diagnostics 339