4 Maintaining the Computer Use this chapter to solve problems you may encounter and perform routine maintenance on your CN3 Mobile Computer.
Chapter 4 — Maintaining the Computer Upgrading the Operating System on your Computer You can use the SmartSystems™ Foundation application from Intermec to perform upgrades on your CN3, versions 3.0 or later. Contact your Intermec representative for more information about the SmartSystems Foundation software. When you upgrade the operating system, you erase the current configuration and replace it with the new default configuration.
Chapter 4 — Maintaining the Computer 6 Close the link and download the .zip file to your desktop computer or your laptop computer. 7 If you are using the SmartSystems Console to upgrade the CN3, go to page 102, otherwise go to the next paragraph. Using a Storage Card to Upgrade the Computer To use a miniSD storage card to upgrade the CN3, you need a Secure Digital card reader and a miniSD storage card formatted as FAT16.
Chapter 4 — Maintaining the Computer 9 When progress is complete, the CN3 performs a warm-boot to reset its configuration. Remove the miniSD card and delete its files. Set the date, time, and network communication parameters to reestablish communications with the other devices in the wireless network. Upgrading the SSPB Files 1 Extract the SSPB upgrade files to a miniSD card.
Chapter 4 — Maintaining the Computer 6 Drag-and-drop the device upgrade onto each CN3 icon. Once the upgrade is done downloading to your CN3, your CN3 replaces the operating system, then performs a warm-boot. The SmartSystems Console shows your CN3 as offline (via a red stop sign) until the device reboots and reconnects to the system. Troubleshooting Your Computer Before sending the CN3 in for service, save its data and configuration.
Chapter 4 — Maintaining the Computer Problems with Wireless Connectivity Problem Solution When you turn on the CN3 after it was suspended for a while (1015 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 “KeepAlive” message from host to maintain the TCP session while a CN3 is suspended. The No Network Connection icon appears on the toolbar.
Chapter 4 — Maintaining the Computer Problems While Configuring 802.1x Security (continued) Problem Solution A network connection icon appears in the toolbar, but then disappears. The CN3 may not be communicating with the intended access point. Make sure the CN3 network name matches the access point network name. Default network name is “INTERMEC.” Access point may not be communicating with server. Ensure the access point is turned on, properly configured, and has 802.1x security enabled.
Chapter 4 — Maintaining the Computer Problems While Scanning Bar Codes (continued) Problem Solution The input device attached to the CN3 does not work well or read bar code labels very quickly. Set the Scanner Model command to the specific attached input device. Check enabled bar code symbologies and enable only the symbologies being used. The scanner will not read the bar code label. Aim the scanner beam to cross entire bar code label in one pass. Vary the scanning angle.
Chapter 4 — Maintaining the Computer Press the power switch to turn off the CN3. Dip a clean cloth towel in the ammonia solution and wring out the excess. Wipe off the scanner window and camera lens and flash area. Do not allow any abrasive material to touch these surfaces. Wipe dry.
Chapter 4 — Maintaining the Computer 108 CN3 Mobile Computer User’s Manual
