HP Jetdirect 310x - Print Server For Fast Ethernet User Manual page 133

Light Behavior
Off
On solid green
USB Light
Light Description
Behavior
Off USB is not operational. This is OK before the print
server finishes starting up. After startup completes,
this could indicate a faulty print server.
On solid USB is enabled and ready for use. This begins before
green the USB cable is connected.
Blinking Software fault occurred for the firmware. There is a
(green) valid USB device and connections, but the device is
not supported. Make sure the attached device is a
printer.
Blinking Might be a hardware fault (for example, a
(amber) short-circuit, faulty cable, or a printer drawing too
much power).
To verify, disconnect the USB cable at the print
server. Switch on the printer if it is off. Power cycle
the print server (unplug it and plug it back in). Then
reconnect the USB cable. If the USB light is now
green and steady, then no problem remains.
Otherwise, if the USB light is still blinking amber,
then there may be a faulty component. Try these steps
to determine which component might be causing the
problem:
Description
No network connection.
Network connection is established at 10 Mb/s
or at 100Mb/s.