Xerox C2424 Service Manual - Page 281
: Head-to-Drum Check, 12: Manuf X-Axis (Scanner), EFGHIJKLMNOP
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Test Print Examples (Continued) 11: Head-to-Drum Check These prints indicate if the gap between the printhead and the drum is correct. Lines: The horizontal lines of the print are made up of long and short dashes. Inspect the first and last 1/2 in. (12 mm) of the black lines for the vertical distance between the short dashes and long dashes. A difference indicates the printhead gaps at each end of the printhead are not equal. Text: Examine each end of the band of text. Look for fuzziness or differences between the quality of the characters on the left and right ends of the print. A difference indicates the printhead gaps at each end of the printhead are not equal. The ends of this system's printhead rests on two spacers on the ends of the drum that hold the head-to-drum gap under much tighter control than in previous solid ink systems. There is no head-to-drum adjustment possible in this system. If the gap is suspect, check that the printhead is correctly and completely installed. EFGHIJKLMNOPQ EFGHIJKLMNOP EFGHIJKLMNOPQR EFGHIJKLMNOPQ EFGHIJKLMNOP EFGHIJKLMNOP 12: Manuf X-Axis (Scanner) This print is used by Manufacturing and Engineering. Image-Quality Troubleshooting s 5-41
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