1. Abnormal CR Operation
START
When
theprinter is
poweredon, does
theCR motor
rotate?
IsCN11
connected
correctly?
Connect
CN11
correctly.
Isthe
problem
corrected?
NO
YES
Does
theCR motor
stopduring or after
initialization?
When
youmove the CR
manuallywith the
power off,does it
movefreely?
YES
YES Isthe
platengap
adjusted
properly?
NO
YES
Adjustthe gap properly.
Referto Chapter 4.
Isthe
problem
corrected?
NO
NO
NO
NO
Replacethe oil pad mounted on
theCR assembly. Cleanthe CR
shaft,and lubricate the oil pad
andthe surface of the CR shaft.
IsCN4
connected
correctly?
Connect CN4
correctly.
Isthe
problem
corrected?
NO
NO
Doesthe
HPsensor work
correctly? See
Table5-2.
Replacethe
HPsensor.
NO
Isthe
problem
corrected?
END
YES
YES
YES NO
END
YES
YES
Isthe
resistancefor
theCR motor correct?
SeeTable 5-3.
Replacethe
CRmotor.
NO
Isthe
problem
corrected?
NO
END
YES
YES
Replacethe C166
MAINboard.
Checkthe resistance
ofthe motor coils.
SeeTable 5-3.
Isit
OK? NO
Replace
theCR
motor.
Replacethe
C166MAIN
board.
END
NO
YES
YES
YES
END
Figure 5-2 Flowchart 1
FX-2170 Service Manual Troubleshooting
Rev.A 5-5