Rap 06: Wrong Character, Character Omission Or Dot - OKIDATA Pacemark 3410 Service Manual

Page: 107
Service Guide PM3410
Chapter 4 Failure & Repair Analysis
RAP 06: Wrong Character, Character Omission or Dot Omission
START.
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.
A
YES 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 Rate
Character Format
Protocol
BUSY Signal output selection