
PROBLEM CAUSE SOLUTION
Link LED on
Computer module
is on, Host LED on
Computer module
is o
• The computer is not powered
on.
• The Computer module is not
connected to the computer
(when used with the optional
Computer AC adapter)
• The computer does not
support USB hubs.
• The DisplayLink Extender is
malfunctioning
1. Disconnect the Projector module from the
DisplayLink port and power connector on the
projector.
2. Disconnect the Computer module from the
computer.
3. Reconnect the Computer module to the
computer.
4. Reconnect the Projector module to the
DisplayLink port and to the power cord.
5. In the Universal Serial Bus controllers section of
Device Manager, check that the DisplayLink
Extender is recognised as a“Generic USB Hub”.
DisplayLink
Extender modules
were working but
the Host LED on
Projector module
is suddenly
blinking
The Projector module is in
suspend mode. The operating
system may put the DisplayLink
Extender in suspend mode
when the computer is put into a
Suspend/Standby state or when
no projector is attached.
1. Recover/Resume the operating system from
Suspend/Standby mode (see your operating
System’s documentation).
2. Connect a projector to the Projector module..
All LEDs on both
the Computer
module and
Projector module
are on but the USB
device does not
operate correctly
or is detected
as an “Unknown
Device” in the
operating system.
• The projector is
malfunctioning.
• The computer does not
recognise the projector.
• The application software for
the device is not operating.
• The DisplayLink Extender is
malfunctioning.
1. Disconnect the Computer module from the
computer.
2. Connect the projector directly to the USB port
on the computer.
3. If the projector does not operate properly,
consult the projector user documentation.
4. Update your system BIOS, chipset or USB Host
controller drivers from your System/Mother
board manufacturer’s website.
5. If the projector operates properly when directly
connected to the computer, connect another
USB device to the Computer module.
Connect the DisplayLink Extender to
the computer.
6. If the other USB device does not operate, the
DisplayLink Extender may be malfunctioning.
Contact InFocus support for assistance.
7. If the other USB device operates properly, the
projector may be malfunctioning. Contact
InFocus support.
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