Rap 03:Wrong Or Missing Characters / Dots On Output - OKIDATA ML320 Service Manual

RAP 03:Wrong or Missing Characters / Dots on Output

START
Is the head cable correctly inserted into CN2 of the control board?
NO Correctly insert the cable.
Is the problem resolved?
YES
NO
YES Replace the printhead.
Is the problem resolved?
YES
NO
Is the problem resolved?
A
Are the contacts between the space motor and the carriage cable properly made?
YES Replace the space motor.
Is the problem resolved?
YES
NO
NO Reseat the carriage cable and the space motor assembly.
Is the problem resolved?
YES
NO
End of procedure.
Go to the next step listed below.
End of procedure.
Replace the control board.
YES End of procedure.
NO Go to A.
End of procedure.
Go to the next step listed below.
End of procedure.
Contact Technical Support.
Service Guide ML320/ML321
Chapter 4 Failure & Repair Analysis
Page: 93