Rap 02B:abnormal Spacing - Rev D - OKIDATA ML320 Service Manual

RAP 02B:Abnormal Spacing - Rev D

START
Check the movement (Steps A and B) of the carriage assembly.
A
Does the assembly vibrate back and forth in the same location or does it move sharply to the
left or right end of the carriage shaft?
YES Replace the control board.
Is the problem resolved?
YES
NO
NO Clean the contacts between the carriage cable and the space motor contacts.
Is the problem resolved?
YES
NO
B
Is the carriage assembly jammed?
YES Clean the teeth of the space motor and the space rack. Make sure that the space
rack is correctly installed.
Is the problem resolved?
YES
NO
NO Go to C
C
Are + 5 vdc and + 50 vdc supplied to the control board?
End of procedure.
Go to the next step listed below.
End of procedure.
Go to B.
End of procedure.
Go to C
Service Guide ML320/ML321
Chapter 4 Failure & Repair Analysis
Page: 92