Lexmark 4227 Service Manual - Page 45
Paper feed service check, User's Guide
UPC - 734646117104
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4227-300 Paper feed service check Note: If the problem is frequent jams or paper creases, verify that the paper is neither very thick nor very thin. If necessary refer the customer to the User's Guide for specifications of acceptable papers. FRU/Symptom Action 1 Auto Sheet Feeder If the Auto Sheet Feeder is installed, remove it. Enter the Paper Handling Options Menu and set ASF to off. Verify that the machine works correctly without the ASF installed. 2 Tractor 2 If the printer fails only with the Auto Sheet Feeder installed, go to the "Auto Sheet Feeder (ASF) service check" on page 2-13. If the Tractor 2 option is installed, remove it. Verify that the machine works correctly without Tractor 2 installed. If the printer fails only with Tractor 2 installed, go to the "Tractor 2 service check" on page 2-31. 3 Paper Feed Motor If there is no paper motion, disconnect the paper feed motor connector CN10 from the main logic board. Check the resistance of pins: CN-1 and 6, 2 and 5, 3 and 6, and 4 and 5. All resistances should be 5.8 ± 0.5 ohms. No pin should have continuity to ground. Diagnostic information 2-21