Page: 107Service Guide PM3410Chapter 4 Failure & Repair AnalysisRAP 06: Wrong Character, Character Omission or Dot OmissionSTART.Are the cables to CN2 and CN6 on the main logic board connected correctly?NO Connect them correctly.Is the problem resolved?YES End of procedure.NO Go to the next step listed below.YES Is the cable to CN101 on the interface connector board connected correctly?NO Connect it correctly.Is the problem resolved?YES End of procedure.NO Go to A.AYES Is the interface cable connected correctly?NO Connect it correctly.YES Are the + 8 vdc output voltages supplied by the main logic board? Check at pin 6 of connector CN7.NO Are the cables to CN3 and CN7 on the main logic board properly connected to the power supply unit?NO Connect them correctly.YES Replace the Power Supply Unit.YES Replace the printhead.Is the problem resolved?YES End of procedure.NO Replace the Program and Slave ROMs.Is the problem resolved?YES End of procedure.NO Are the cables connected to CN2 and CN6 on the main logic board damaged?YES Replace the cables.NO Check the following MENU Settings related to the interface:Baud RateCharacter FormatProtocolBUSY Signal output selection
