Troubleshooting
If a problem occurs while the unit is being used, check the following items and check the unit status with User
Utility. If the unit still malfunctions, turn it OFF, unplug the power cord from the AC outlet, and call for service.
Symptom
Possible Cause
Remedy
The LED (Green) does not
light when the power is turned
on.
The power cord is not plugged in.
Insert the power plug firmly.
Problem with the AC adaptor.
Unplug the power cord from the AC
outlet, and call for service.
The computer does not
recognize the unit.
The unit is not functioning
correctly.
The unit is not connected to the
computer correctly.
Connect the USB cable correctly.
The software is not installed correctly.
Uninstall the software from the
computer, and then install the
software again. (page 23)
The unit is connected via USB hub,
and the USB hub is not functioning
properly.
Do not connect via the USB hub.
Connect the unit to the computer
directly.
There is a problem with the USB
cable.
Use the included USB cable or a
certified Hi-speed USB 2.0 cable.
The power of the unit is turned OFF
because no operation was performed
for a certain period of time.
Press the power button to turn ON the
unit’s power.
Scan speed is slow.
The unit is connected over a USB
1.1 connection.
Connect over USB 2.0.
The drivers or software
cannot be installed.
Administrator privileges are required
to install the software.
Log in to Windows with an account
that has administrator privileges, and
try installing the software again.
The document has been
loaded on the feed tray, but
the unit does not start
scanning.
The document is not loaded properly.
Load the document correctly.
(page 33)
The sensor cannot detect the
document as the edge of the
document is curled.
Flatten the document (page 31) and
load it again (page 35).
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Operating Manual
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Appendix