Lexmark 4227 Service Manual - Page 67
Printhead-to-platen gap electronic setting, Bidirectional print adjustment, FormFeed, Micro
UPC - 734646117104
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4227-300 Printhead-to-platen gap electronic setting Be sure there is no paper in the printer. 1. Install a ribbon. 2. Hold down FormFeed and power on the printer. 3. Remove the ribbon guide. 4. Measure the printhead-to-platen gap. The gap specification is between .011 inch (.275 mm) and .015 inch (.375 mm). 5. Use the Micro↑ or Micro↓to change the printhead-to-platen gap setting. The Micro↑ button increases the clearance and the Micro↓button decreases the clearance. 6. Install the ribbon guide. 7. Press Start/Stop to reset the new printhead-to-platen gap setting. 8. Remove the ribbon guide and check the setting with a feeler gauge. 9. Repeat steps 5 through 8 until the gap is within the specification. 10. Press Store to save the setting in NVRAM. Bidirectional print adjustment Perform this adjustment whenever the main logic board, carrier, or printhead is replaced.This test is in the User Menu and uses a line length corresponding to the right margin setting. Run the test at both the Draft speed setting and the Courier speed setting. The following steps tell how to adjust the alignment of the print wires, and assumes that macros are disabled. 1. Load continuous forms. 2. Press Menu. 3. Press Item ↓until Print Adjust appears on the display. 4. Press Next →. 5. Press Item ↓ or Item ↑ to choose Draft or Courier. Draft prints each alignment pattern once (unidirectional). Courier prints each alignment pattern twice (bidirectional). 6. Press Start/Stop to print the alignment pattern. Repair information 4-3