D-Link DWL-1800 user manual Problem Possible Cause Corrective Action Indication

Problem and	Possible Cause	Corrective Action
Indication
Failure to establish	1. Power supply to	1. Verify power to units.
wireless link (“D”	units may be faulty.	2. Verify that all cables are con-
models/external	2. Cables may be	nected securely.
antennas)	improperly connected	3. Refer to previous Section and
	3. There may be some	verify wireless link between the
	problem with antenna	units.
	installation.	4. Verify that the antenna(s) are
		properly installed (see relevant
		section in this manual):
		??	Check antenna alignment.
		??	Verify that antenna
			polarization is the same at
			both ends.
		?? Verify that the range
			matches specifications.
		??	Verify line-of-sight/antenna
			alignment/antenna height.
Wireless link	1. Ethernet hub port or	1. Check that the LINK LED is lighted
established, but	UTP cable is faulty.	Green. If this is not the case, the port is
there is no	2. Ethernet port in unit	inactive. Try another port on the hub or
Ethernet activity	is faulty.	another UTP cable.
(DWL-1800B and	3. The DWL-1800R	2. Verify that Ethernet port in unit is
DWL-1800R	is associated to a	working. Ping unit to verify Ethernet
units).	DWL-1800B unit that	connection.
		3. Verify that you are using a cross -over
	is not connected
	correctly to the LAN.	UTP cable (pins 1 & 3, 2 & 6) if
		connected directly to a workstation, or a
		straight-through cable if connected to a
		hub.
		4. Check the unit’s LINK LED indicator
		and check the Ethernet counters in the
		monitor to verify Ethernet activity (see
		Section 3.2.1.3.4).
		5. Check that the DWL-1800B is
		correctly connected to the LAN.

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