HP 310X - Manual (Page 150)

USB light blinking amber
for HP Jetdirect 175x external print server/Internet connector for USB
and HP Jetdirect 310x external print server/Internet connector for
USB
If the USB light is blinking amber, there might be a hardware fault
(for example, a 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:
Detach the USB cable and power cycle the print server (unplug
it and plug it back in). If the USB light is green and steady,
then the print server is OK. If it is blinking amber, then the print
server is faulty.
●
Try reconnecting the USB cable to the print server only, and
power cycle the print server (unplug it and plug it back in). If
the USB light is green and steady, then the cable is also OK.
If it is blinking amber, then the cable may be faulty.
●
Power cycle the printer and reconnect the USB cable to the
printer. If the USB light is green and steady, then the printer
is also OK. If it is blinking amber, then the printer may be
faulty.
●
Is the USB light now ON solid green?
If yes, click on the Yes button to return to the Troubleshooting
Overview page and continue with the next step of the troubleshooting
procedure.
If no, you may need to replace the component indicated at fault. If the
fault is with the print server or the USB cable (provided with the print