Xerox 7700DX Service Manual - Page 171

■ Note the leading edge of the paper when removing the test print from the tray. Use a pen or pencil to note the leading edge as the "TOP" of the print "Grid 1-Dot pattern annotations" on page 4-141. With "TOP" up, note the direction of scan from left to right as the "FAST " direction. The direction from the bottom of the print to the top is referred to as the "SLOW" direction. Up Top (Leading edge into output tray) Left Fast Right Slow Down S7700-465 Figure 4-7 Grid 1-Dot pattern annotations ■ Notice which vertical line color(s) on the print needs to be moved right or left to line up as closely as possible with the cyan color line. ■ Measure how much each line needs to move (in millimeters) and whether it must be moved left or right. Note Cyan is the reference color and does not move. Make the adjustments of M, Y, and K toward Cyan. 4. From the Adjustment/Calibrations menu, select Coarse RegiCon Init test. This time answer No to the Set Factory Defaults? Yes/No, but answer Yes to the Do you want to adjust NVRAM? Yes/No question. Answer No to Set Skew Error threshold? Yes/No. Answer Fast to the Which scan direction? Fast/Slow. 5. Select which color (of YMK) to adjust. Select how many millimeters (1-5) to adjust. Select which direction (Left/Right). The next screen asks for confirmation: {Adjust by mm? Yes/No}, select Yes. 6. Repeat steps 4 and 5 for the other colors. You reprint the Grid 1-Dot pattern, as outlined in step 3, or go to the Adjustments/Calibrations menu: RegiCon 685 Setup Cycle test. If the #1 test fails, print the Grid 1-Dot page to see if the vertical lines are all clustered within 1 mm of the Cyan line. If not, repeat. It may be necessary to closely inspect the Color Solid Fill Prints to determine if the image quality is acceptable. Phaser 7700 Color Laser Printer Service Manual 4-141