User's Manual

Chapter 4 — Troubleshooting and Maintaining the CK30
62 CK30 Handheld Computer User’s Manual
Problems With RF Connectivity (continued)
Problem Possible Solution
When you turn on the terminal after it
was suspended for a while (10-15
minutes or longer), the terminal can no
longer send or receive messages over the
network.
The host may have deactivated or lost your current
terminal emulation session. In a TCP/IP direct connect
network, you need to turn off the “Keep Alive” message
(if possible) from the host so that the TCP session is
maintained while a terminal is suspended.
The no network connection icon appears
in the status bar. The CK30 is not
communicating with the access point.
The CK30 is not connected to the access point. Make
sure the access point is turned on and operating. You
may also be using the terminal out of range of an access
point. Try moving closer to an access point to re-
establish communications. If you are using a
MobileLAN access point with firmware release 1.34 or
earlier, it may not be able to communicate with the
terminal. For help upgrading your access point firmware,
see the MobileLAN access System Manual (P/N 067150).
Make sure the CK30 is configured correctly for your
network. The radio parameters on the terminal must
match the values set for all access points the terminal
may communicate with. For help, see “Using RF
Communications on the CK30” in Chapter 2.
If you have an 802.11b radio, the radio initialization
process may have failed. Try resetting the CK30. See
“Booting the CK30” later in this chapter.
If you have tried these possible solutions and the no
network connection icon still appears, you may have a
defective radio card. For help, contact your local
Intermec service representative.
The CK30 is connected to the G4000 or
host computer and you move to a new
site to collect data. The network
connection icon was visible but now the
no network connection icon is visible.
You may have gone out of range of an access point. Try
moving closer to an access point or to a different
location to re-establish communications. Once you are
in range again, the network connection icon will appear
again. Any data you collected while out of range will be
transmitted over the network.