Epson FX-2170 Service Manual page 130

FX-2170 Service Manual
4. Abnormal Printing
START
Is the
self-test
YES
printed
correctly?
NO
Are all
NO
the dots printed
OK?
YES
Do all
the LEDs on
the control panel
blink at
power
on? Check printhead, motors
drivers, and power
YES
supply with a meter.
Replace any bad parts.
Is the
NO
problem
corrected?
Is
the FFC
Connect the
NO
connected
cable correctly.
correctly?
YES
Is the
NO
problem
corrected?
Check
NO
the FFC using a
multimeter. Is it
OK?
YES
NO
problem
corrected?
Replace the C166
MAIN board.
END
Rev.A
Are
any wires
YES
in the printhead
broken?
NO
Does
the resistance
of printhead wires
check
OK?
NO
NO
YES
END
Check
the FFC using a
multimeter. Is it
OK?
YES
YES
END
Replace the
FFC. characters
Is the
YES
END
Replace the C166
MAIN board.
Figure 5-6 Flowchart 4
Data received from
the host is not printed
correctly.
Are
printer
settings
correct?
YES
Are
the correct
printer drivers
Replace the
installed?
printhead.
Is the
YES
problem
corrected?
END
NO
Replace the
FFC.
Is the
NO YES
problem
corrected?
END
Is the
bottom of
NO
Reinstall the
ribbon mask.
missing?
YES
Is the
NO
problem
corrected?
END
Troubleshooting
Reset the
NO
printer.
YES
Is the
YES
NO
problem
corrected?
END
NO
Install the correct
printer drivers.
YES
Is the
YES
NO
problem
corrected?
END
Does
the printer
NO
work OK with
Problem with
another
computer.
computer?
END
YES
Replace the C166
MAIN board.
END
YES
END
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