5-1
CHAPTER 5 TROUBLESHOOTING PROCEDURES
If the scanner seems to be operating abnormally, perform the troubleshooting procedures described
in this chapter before requesting a service call.
5.1 The scanner Is turned on but doesn’t operate at all
5.2 The scanner operates improperly after connection to the computer
5.3 The control panel’s red ERROR LED is lit
Cause
The power cable has come loose.
The scanner is connected to a power outlet
that does not provide the rated power supply or
supply voltage.
The power outlet is not supplying a supply
voltage.
Remedy
Insert the power plug firmly.
Use only the rated power supply and supply voltage.
Check the power supply.
Cause
Is the scanner properly grounded?
Is the USB cable between the computer and
the scanner working properly?
Is the USB cable compliant with the USB 2.0
interface that you are using?
Is an add-on USB card being used?
Remedy
Make sure that the scanner is grounded.
Determine whether there are any problems with either of the
cable connectors (e.g. a broken or bent pin) and ensure that
the cable is inserted firmly into the connectors.
Ensure that you use a USB 2.0-compliant USB cable.
USB 1.1 add-on cards are not supported. Correct operation is
not guaranteed when the scanner is connected to a USB port
that is not the standard built-in computer port.
Cause
A ROM, RAM or other hardware error occurred
during the scanner’s self-test.
Remedy
An internal error has occurred. Contact the store where you
purchased your scanner or your nearest Graphtec
representative.
