Error Indicated By Leds; Printing Failure - Epson Stylus COLOR 440 Service Manual

EPSON Stylus COLOR 440, 640, and 740

3.2.2 Error Indicated by LEDs

Flowchart 2

3.2.3 Printing Failure

START
Try printing
from DOS
Run a
self-test.
YES
Does printing
Does the self-test
work from
print correctly?
DOS?
YES
NO
Check the
software
application and
printer driver
for the proper
settings.
Make sure all
connectors on the
Is the problem
main board are
solved?
connected securely.
NO
Perform a
Is the problem
printhead cleaning.
solved?
NO
Replace the ink
Is the problem
cartridges.
solved?
NO
Refer to Section 3.5,
Is the problem
"Repair of the Printer
solved?
Mechanism."
YES
Flowchart 3
Chapter 3 Troubleshooting
Check to see if
the interface
Check the
cable is loose.
printer's
If so, reconnect
default
it. Otherwise,
settings.
replace it.
NO
Is the problem
solved?
NO
Replace the main
board.
YES
YES
YES
NO
Replace the main
board.
END
YES
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