3. Abnormal Control PanelOperation
START
Does
the Operatebutton
turn power on
and off?
NO
YES Is
the
Operatebutton
OK?
NO Replacethe
PNLboard.
Checkthe Operate button
on the controlpanel using
a multimeter.
YES Isthe
problem
corrected?
NO
END
YES
Is
the FFC
connected
correctly?
NO Connect the
cable correctly.
YES Isthe
problem
corrected?
NO
END
YES
Check
pin19 of
the FFC.Is it
OK?
NO Replacethe
FFC.
YES Isthe
problem
corrected?
NO
END
YES
Replacethe C166
PSB/PSEboard.
END
Dothe
controlpanel
buttons
function
OK?
NO
YES
Checkthem using
a multimeter.
Are
they
OK?
NO
YES
Replacethe
PNLboard.
Isthe
problem
corrected?
NO
END
YES
Is
the FFC
connected
correctly?
NO Connect the
cable correctly.
YES Isthe
problem
corrected?
NO
END
YES
Check
the FFCusing a
multimeter. Isit
OK?
NO Replacethe
FFC.
YES Isthe
problem
corrected?
NO
END
YES
Replacethe C166
MAINboard.
END
Figure 5-5 Flowchart 3
Troubleshooting FX-2170 Service Manual
5-8 Rev. A