HP 5185-3843 Benutzerhandbuch

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Troubleshooting Problems 5-3
USB  Light
Behavior
Description
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 green
USB is enabled and ready for use. This begins before the USB cable is 
connected.
Blinking 
—green
Software fault occurred for the firmware. There is a valid USB device 
and connections, but the device is not supported. Make sure the attached 
device is a printer.
Blinking 
—amber
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.