Rap 02A:abnormal Spacing - Rev A, B, And C - OKIDATA ML320 Service Manual

RAP 02A:Abnormal Spacing - Rev A, B, and C

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?
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.
Is the problem resolved?
NO Go to C
C
Are + 5 vdc and + 40 vdc being supplied to the control board?
+ 5 vdc
Take the voltage reading between Pin 5 and Pin 9 of CN2 on the power
supply board.
YES End of procedure.
NO Go to the next step listed below.
End of procedure.
Go to B.
YES End of procedure.
NO Go to C
Service Guide ML320/ML321
Chapter 4 Failure & Repair Analysis
Page: 91