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3. Abnormal Control Panel Operation
START
Does
the Operate button
turn power on
and off?
NO
YES
Is
the
Operate button
OK?
NO
Replace the
PNL board.
Check the Operate button
on the control panel using
a multimeter.
YES
Is the
problem
corrected?
NO
END
YES
Is
the FFC
connected
correctly?
NO
Connect the
cable correctly.
YES
Is the
problem
corrected?
NO
END
YES
Check
pin 19 of
the FFC. Is it
OK?
NO
Replace the
FFC.
YES
Is the
problem
corrected?
NO
END
YES
Replace the C166
PSB/PSE board.
END
Do the
control panel
buttons
function
OK?
NO
YES
Check them using
a multimeter.
Are
they
OK?
NO
YES
Replace the
PNL board.
Is the
problem
corrected?
NO
END
YES
Is
the FFC
connected
correctly?
NO
Connect the
cable correctly.
YES
Is the
problem
corrected?
NO
END
YES
Check
the FFC using a
multimeter. Is it
OK?
NO
Replace the
FFC.
YES
Is the
problem
corrected?
NO
END
YES
Replace the C166
MAIN board.
END
Figure 5-5 Flowchart 3
Troubleshooting FX-2170 Service Manual
5-8 Rev. A