IBM 4247-003 Maintenance Manual - Page 105
Questions/Actions, Is the red LED lighted
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Table 15. MAP 0190: Forms Feed Problems (continued) Step Questions/Actions Yes No 5. Look closely at the tractor sensor in dim light. There is a Install a new logic board Remove and re-install the tractor small red LED visible in the sensor surface, over which assembly, making sure that the the forms pass. You may need to cup your hand around Run T&D in automatic test mode electrical connector tab is fully the sensor to be able to see the LED. This LED lights if to verify correct printer operation. seated in the connector. Check if the tractor is correctly plugged in and the electrical For Model A00, see "How To Run the red LED is now lighted. If the circuits are OK. the Test and Diagnostic (T&D) red LED is still not lighted, check Programs" on page 161. For that the small flat ribbon cable in Is the red LED lighted? Models 001, 002, or 003, see the tractor is fully connected to "How To Run the Test and the tractor motor. Check if the Diagnostic (T&D) Programs" on red LED is now lighted. If the red page 201. LED is still not lighted, install a new tractor assembly cable. Check if the red LED is now lighted. Replace the tractor assembly and check if the red LED is now lighted. If the red LED is still not lighted, install a new tractor assembly cable. Check if the red LED is now lighted. If the red LED is still not lighted, install a new logic board. Run T&D in automatic test mode to verify correct printer operation. For Model A00, see "How To Run the Test and Diagnostic (T&D) Programs" on page 161. For Models 001, 002, or 003, see "How To Run the Test and Diagnostic (T&D) Programs" on page 201. Chapter 1. Diagnosing Problems 105
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