Chapter 5 — Troubleshooting and Maintaining the CN3
120 CN3 Series Mobile Computer User’s Manual
Problems While Operating the CN3
Problem Solution
You press the Power button and
nothing happens.
• Make sure the backlight is on.
• Make sure you have a charged battery that is installed
correctly. For help, see “Charging the Battery” on
page 4.
• The battery may be discharged. Replace the battery
with a spare charged battery, or charge the battery.
• Perform a warm boot or a cold boot.
The Battery status LED is on. The battery status LED indicates the following states:
• If the battery status LED is a steady green, the
battery is more than 95% charged and computer is
on a charger.
• If the battery status LED is blinking red, then the
battery is low. Replace or charge the battery.
• If the battery status LED is a steady red, the main
battery is on charge.
The computer appears to be locked up
and you cannot enter data.
• Press the power key to turn off the computer, then
press the power key again to turn it on.
• Press and hold the power key ten seconds to warm
boot the computer.
• Try reloading the firmware. See “Upgrading the
System Software” on page 113 .
• If the computer does not boot or reset, contact your
Intermec representative for help.
You tap the screen and nothing
happens.
Align your screen. For help, see “Aligning the Touch
Screen” on page 21.
Problems With Wireless Connectivity
Problem Solution
When you turn on the computer after
it was suspended for a while (10 to 15
minutes or longer), it can no longer
send or receive messages over the
network.
Host may have deactivated or lost current terminal
emulation session. In a TCP/IP direct connect network,
turn off the “Keep Alive” message from host to maintain
the TCP session while the computer is suspended.
The CN3 is connected to the network
and you move to a new site to collect
data. Your CN3 now shows you are
not connected to the network.
Move closer to an access point or to a different location
to reestablish communications until you reconnect with
the network. Any data collected while out of range is
transmitted over the network.
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