Lexmark 4227 Service Manual - Page 48
POST service check, FormFeed, Action, FRU/Symptom
UPC - 734646117104
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4227-300 FRU/Symptom Action 7 Operator Panel If paper does not move at all, verify the FormFeed button is working correctly by performing the Service Menu Button Test. 8 Main Logic Board If no other problem is found, replace the main logic board. Perform the "Bidirectional print adjustment" on page 4-3, and "Printhead-to-platen gap adjustment" on page 4-2. POST service check FRU Action 1 Power Disconnect the parallel or serial cable and turn the power on. If there is no printer activity, go to the "Power failure service check" on page 2-25. 2 Operator Panel If the power supply fan turns on but no LEDs light, go to the "Operator panel service check" on page 2-20. 3 Main Logic Board If the Power LED turns on but POST does not complete, replace the main logic board. Perform the "Bidirectional print adjustment" on page 4-3 and check the "Printhead-to-platen gap adjustment" on page 4-2. 4 Printer Cable If POST completes, reconnect the parallel or serial cable and turn power on again. If POST now fails, there is a problem with the cable, or the parallel connector on the main logic board. 2-24 Service Manual