IBM 4247-003 Maintenance Manual - Page 72
Table 10. MAP 0140: Printhead Drive continued, A00, see How To Run the Test
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Table 10. MAP 0140: Printhead Drive (continued) Step Questions/Actions Yes 3. Power off (O) the printer. Perform the printhead drive service check. See "Printhead Drive Service Check" on page 333. Go to step 4. Is the service check OK? 4. When the print wires are too close to the Go to step 5. platen, they can cause printhead drive problems. Perform the AFTA service check. See "Standard AFTA Service Check and Adjustment" on page 285. Is the AFTA service check OK? 5. Put the covers in the service position. Go to step 6 on page 73. See "Removing Covers" on page 275. Disconnect the carriage motor connector from the logic board. See "Carriage Motor Wiring" on page 246 to measure the resistance of the motor windings. Is the measurement correct for each winding? No Repair as needed. Run T&D in automatic 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. Repair as needed. Run T&D in automatic 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. Install a new carriage motor. See "Carriage Drive Motor Assembly" on page 415. Run T&D in automatic 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 72
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