Lexmark 2380 Service Manual - Page 53

FRU / Symptom Action 6 Paper Select Sensor Remove all paper from the printer and place the tractor in the push position. Press Form Feed and time how long the gear train rotates. • With the paper select lever in the cut sheet position (sensor open) the gear train should rotate for less than 2 seconds; • With the lever in the continuous forms position (sensor closed), the gear train should rotate for more than 3 seconds. If the printer does not do this, inspect the sensor to make sure it is being opened and closed by the paper separator. Disconnect CN5 from the sub logic board and measure the paper selector sensor resistance from CP5-1 to CP5-2. Replace the sensor if the resistance does not change from zero to infinite as the paper select lever is moved. 7 Pull Tractor Sensor If the pull tractor sensor has failed to close, Park/Load and Auto Tear Off will not work when using push tractors. If the sensor has failed to open, Park/Load will try to park paper when using pull tractors, but the paper will feed all the way out of the tractors and cannot reload. Refer to the "Pull Tractor Sensor Service Check" on page 2-38. 8 Main Logic Board If no other problem is found replace the main logic board. Reset the "Bidirectional Print Adjustment" on page 4-5. Diagnostic Information 2-29