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Service Guide ML393/ML393CPlus
Chapter 4 Failure Analysis
RAP 11: Color Ribbon Shift Problem
START
Does the ribbon shift mechanism operate properly?
NO Go to A.
YES Is BLACK RIBBON set on the menu?
NO Go to B.
YES Set another color.
Has the problem been resolved?
NO Go to B.
YES End of procedure.
A
Is the ribbon installed properly?
NO Correct the ribbon installation.
YES Go to C.
B
Are CN4 on the control board and CN2 on the sensor board connected correctly?
NO Connect the cables correctly.
YES Replace the control board.
Has the problem been resolved?
YES End of procedure.
NO Replace the ribbon/bail motor assembly.
Has the problem been resolved?
YES End of procedure.
NO Go to A.
C
Check the parts listed below.
1. Shoulder screw
2. Ribbon shift arm and spring
3. Roller lever
4. Ribbon cartridge balance spring
Are they normal?
