OKIDATA ML393C Plus, Руководство по обслуживанию

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Service Guide ML393/ML393CPlus
Chapter 4 Failure Analysis
RAP 06: Wrong Character, Character Omission, or Dot Omission
START
Are cables CN2 and CN6 on the control board connected correctly?
NO Connect them correctly.
YES Is cable CN101 on the interface connector board connected correctly?
NO Connect it correctly.
YES Is the interface cable connected correctly?
NO Connect it correctly
YES Are the +/- 8 vdc output voltages supplied by the control board? Check at both ends of C9 for the
positive voltage. Check at both ends of C8 for the negative voltage.
YES Replace the printhead.
Has the problem been resolved?
YES End of procedure.
NO Go to A
NO Are cables CN3 and CN7 on the control board properly connected to the power supply unit?
NO Connect them correctly.
YES Replace the power supply unit.
A
Replace the Program and Slave ROMs on the control board. Has the problem been resolved?
YES End of procedure.
NO Replace the control board.
Has the problem been resolved?
YES End of procedure.
NO Are the cables connected to CN2 and CN6 on the control board damaged?
YES Replace the cables.
NO Check the MENU Settings related to the interface. Baud Rate Character Format Protocol BUSY Signal
output selection
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