Troubleshooting - Epson EU-T432 Technical Manual

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Troubleshooting

Use troubleshooting procedures in the table below when problems occur.
Table 5-1 Troubleshooting
Phenomenon
No
Power (24 V) is
performance
not supplied
POWER LED is not
lit.
PAPER LED is lit. Paper out error
PAPER LED is Paper detector
not lit even failure
when the
paper is out.
PAPER LED is lit
Paper detector
even when the
failure
paper is not
out.
5-2 Repair
Condition Cause
Power connector is
disconnected.
Fuse (F1) is blown.
(1) Paper is not
loaded in the
printer.
(2)Only a small
amount
remaining on
the paper roll
(paper NE
detected)
(1)Paper chips or
foreign matter is
jammed around
the paper
detector.
(2)Paper chips or
foreign matter is
jammed around
the paper NE
detector.
(1) Paper NE
connector is
disconnected.
(2)Paper NE
detector is
damaged.
(3)Paper detector is
disconnected.
(4)Printer detector
is damaged.
(5)Printer FFC is
disconnected.
Level Where/how to check
A See if the power
connector is
connected properly.
B Check with a tester if
the fuse (F1) on the
control circuit board is
conductive.
A Check if the paper is
loaded.
A Check the amount of
the paper remaining in
the paper supply
module.
A
Check whether paper
chips or foreign matter
is jammed around the
paper detector.
A
Check whether paper
chips or foreign matter
is jammed around the
paper NE detector.
A
Check if the paper NE
detector is connected
properly.
B Check the paper NE
detector function with
an oscilloscope.
A Check if the paper
detector is connected
properly.
B Check the paper
detector function with
an oscilloscope.
A Check if the printer FFC
is connected properly.
Procedure
Connect the power
connector again.
•Replace the blown
fuse.
•Replace the
control circuit
board if there is no
recovery after the
fuse replacement.
Load the paper in
the printer.
Replace the paper
roll if only a small
amount of the
paper remaining is
left.
Remove the paper
chips or foreign
matter if there is
any.
Remove the paper
chips or foreign
matter if there is
any.
Connect the
connector properly
if it is disconnected.
Replace the paper
NE detector if it is
damaged.
Connect the
connector properly
if it is disconnected.
Replace the paper
detector if it is
damaged.
Connect the FFC if it
is disconnected.
Rev. A