Samsung NP-X22-K01-SEA - Manual (Page 163)

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A2 Check if the AP operates properly. If the AP is not
operating properly, turn it off and on again and try
again.
A3 Check if the AP firmware is the latest version. (For
more information on the AP firmware, ask the AP
manufacturer or your product provider.)
A4 Check if the AP is properly connected to the network.
Connect the LAN cable from the AP to a computer
and check if the network is connected properly.
A5 Check the Network Key (Encryption Key) settings
again. If the automatic password converting function
(passphrase function) is enabled and the wireless
connection is normal but you cannot send data
over the connection, please enter the Network Key
(Encryption Key) manually.
A6 Check the AP settings as follows.
▶ If there are multiple APs running at the same
time, check the channel setting of each AP. If
the interval between the channels of the APs is
narrow, you may experience electromagnetic
interference. Set the channel numbers of the APs
so that the internals between the channels are
maximized. (for example, Ch1, Ch5, Ch9, Ch13)
computer.
▶ It is recommended unselecting the Hide option
of the AP. SSID (Service Set ID) is a name used
to distinguish a wireless LAN from other wireless
LANs.
▶ It is recommended using Long Preamble.
Preamble is a signal for data transmission
synchronization. Although some APs support
Short Preamble, there might be a compatibility
problem.
▶ Because “Fixed” channel selection is more stable
then ‘Auto’ channel selection, “Fixed” channel
selection is recommended. It is recommended
not using the “Block Any” and “Any Connection
Block” functions. Although these functions
block connections at the client side when the
network name is Any or Blank, it may cause a
compatibility problem.
▶ For more information on the AP settings, see the
owner’s manual supplied with the AP.