Lexmark 4227 Service Manual - Page 36
If there is a 63C Auto Gap Error, the Gap Home sensor did, paper. With Auto Gap off - light print out
UPC - 734646117104
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4227-300 Auto Gap can be set to off to reduce time-to-print if the printer is always used with a single type of paper. With Auto Gap off, the gap can be set to Manual Position 1 (thinnest paper) to 7 (thickest paper). With Auto Gap off, Single Auto Gap has two selections: • Fixed-The printhead gap is never changed. • Open-The gap is opened when loading forms. Note: If there is a 63C Auto Gap Error, the Gap Home sensor did not detect that the carrier shaft homed, or it detected that the carrier shaft homed at the wrong time. FRU 1 Auto Gap Sensor 2 Auto Gap Motor Gear Train Action Inspect the Gap Home flag on the end of the carrier shaft and make sure it blocks the sensor when the gap is at its largest. Turn the printer on and watch the carrier shaft and the Gap Home flag. If the shaft rotates before the error occurs, the sensor may have failed. Perform the Sensor 2 Test in the Service Menu and test the Gap Home sensor. If the carrier shaft does not rotate, look for an Auto Gap motor or Auto Gap gear train problem. Disconnect CN20 from the main logic board. Check the resistance of pins: 1 and 5, 2 and 6, 3 and 5, and 4 and 6. All resistances should be 180 ± 5 ohms. No pin should have continuity to ground. If there is no 63C Auto Gap Error but there is a gap problem (light print or no print, or paper catching on the printhead or ribbon shield), enter the user menus to make sure the gap settings are appropriate for the paper being used. If Auto Gap is off, Manual Position 1 should be used only with single-part 16 lb. or 20 lb. forms. Refer the customer to the User's Guide for the appropriate Manual Position settings. 2-12 Service Manual