Black Box 1-Port CAT5 USB 2.0 Extender User Manua, IC401A Troubleshooting Tips, blackbox.com

Chapter 4: Troubleshooting

4. Troubleshooting

Table 4-1 provides troubleshooting tips. The topics are arranged in the order in which they should be executed in most situations. If you are unable to resolve the problem after following these instructions, contact Black Box Technical Support at 724-746-5500 or info@blackbox.com.

4.1 Troubleshooting Tips

Table 4-1. Problems/Causes/Solutions.

Problem	Cause	Solution
	The LEX unit is not	1. Ensure that the USB connection between the LEX and
		host computer is properly installed.
All LEDs on LEX	receiving enough power
unit are off.	from the USB port or the	2. Move the USB connector to another USB port on the
	(optional) LEX AC adapter.
		host computer.

All LEDs on REX	The REX unit is not
	receiving enough power
unit are off.
	from the AC adapter.

1.Ensure that the AC power adapter is properly connected to the REX unit.

2.Check that the AC adapter is connected to a live source of electrical power. Check that the REX power LED is illuminated.

Link LEDs on LEX unit and REX unit are off.

There is no connection between the LEX unit and the REX unit.

1.Ensure CAT5 cable is connected between the LEX unit and the REX unit. Use CAT5 or better cable, UTP with a straight-through connector and no crossovers, and 8-pin RJ-45 connectors at both ends.

2.Connect a short CAT5 patch cord between the LEX unit and the REX unit to determine if the original CAT5 cable is defective.

	The REX unit is in suspend
Extender units	mode. The operating
were working, but	system may put the
the Host LED on	extender in suspend mode
the LEX/REX units	when the computer is put
are suddenly	into a Suspend/Standby
blinking.	state or when no USB
	devices are attached.

1.Recover/Resume the operating system from Suspend/ Standby mode (see your operating system’s documentation).

2.Attach a USB device to the extender.

IC401A User Manual 724-746-5500 blackbox.com Page 17