Lenovo 628323U manual Spills on the keyboard, Memory module problems, Networking problems

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If the computer still does not start up, call the Customer Support Center and a Customer Support Specialist will assist you.

Spills on the keyboard

With a mobile computer, there are increased chances of spilling liquids on the keyboard. Because most liquids conduct electricity, liquid spilled on the keyboard could create numerous short circuits, potentially causing irreparable damage to your computer.

If you spill something on your computer:

Attention: Ensure that no liquid creates a short circuit between you and the ac power adapter (if in use). Although you might lose some data or work by turning off the computer immediately, leaving the computer on might make your computer unusable.

1.Carefully unplug the ac power adapter immediately.

2.Turn off the computer immediately. If the computer does not turn off, remove the battery. The more quickly you stop the current from passing through the computer the more likely you will reduce damage from short circuits.

3.Wait until you are certain that all the liquid is dry before turning on your computer.

Note: If you want to replace your keyboard, you can purchase a new one.

Memory module problems

Print these instructions now and keep it with your computer for reference later.

If your memory module is not operating properly, check the following items:

1.Verify that the memory module is installed and seated correctly in your computer.

It might be necessary to remove all added memory modules to test the computer with only the factory-installed memory modules, and then reinstall the memory module one at a time to ensure a proper connection.

2.Verify the proper memory configuration and compatibility including the maximum memory size and the memory speed.

Networking problems

The following are the most common networking problems:

Ethernet problems

•Problem: Your computer cannot connect to the network.

Solution: Ensure that:

–The cable is installed correctly.

The network cable must be securely connected both to the Ethernet connector of your computer and to the RJ45 connector of the hub. The maximum allowable distance from the computer to hub is 100 meters. If the cable is connected and the distance is within acceptable limits but the problem persists, try a different cable.

–The switch port and the adapter have the same duplex setting.

44User Guide

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Contents User Guide Safety, Warranty, and Setup Guide Regulatory Notice Contents Appendix B. Weee and recycling Statements Prevent your computer from getting wet Read this firstProtect yourself from the heat that your computer generates Protect the cables from being damagedHandle your computer gently Important safety informationConditions that require immediate action Carry your computer carefullySafety guidelines Service and upgradesPower cords and power adapters Extension cords and related devicesPlugs and outlets Power supply statementExternal devices General battery notice Rechargeable battery noticeElectrical current safety information Heat and product ventilationUsing headphones or earphones Liquid crystal display LCD noticeAdditional safety information Xii User Guide Front view Locating computer controls, connectors, and indicatorsProduct overview CameraRight-side view System status indicatorPower button MicrophoneAc power connector USB 2.0 connectorPower status indicator Media card reader slotEthernet connector VGA connectorUSB 3.0 connectors Left-side viewSystem status indicators Status indicatorsBottom view User Guide Locating important product information Wireless status indicatorPower status indicator Machine type and model labelFCC ID and IC Certification number label Features SpecificationsBattery life Power source ac power adapterBattery pack Operating environmentHow can I use the battery power more effectively? Using your computerFrequently asked questions Registering your computerHow do I give presentations or attach an external monitor? Special keysHow do I attach or replace a device? Using the UltraNav pointing device Using the TrackPoint pointing deviceChanging the cap Using the touch padCustomizing the touch pad Using the ac power adapter Power managementChecking the battery status Connecting the ac power adapterPower-saving modes Charging the batteryMaximizing the battery life Handling the batteryUsing your computer Go to Settings Internet connection Wi-Fi network Connecting to a wireless LANEstablishing wireless LAN connections Wireless LAN connection statusConnecting an external monitor Connecting a projector or an external monitorTips for using the wireless LAN feature Attaching an external monitorUsing the camera Using audio featuresUsing a flash media card Inserting a flash media card Removing a flash media cardUser Guide You and your computer Accessibility and comfortErgonomic information Accessibility information ComfortTravel tips Travel accessoriesTraveling with your computer Assistive technologiesUser Guide Replacing devices Replacing the batteryStatic electricity prevention User Guide Before you start, print these instructions User Guide Replacing devices Replacing a memory module Replacing devices Replacing the keyboard Replacing devices Installing the keyboard Replacing devices User Guide Replacing devices User Guide Taking care of your computer Troubleshooting computer problemsBe careful about where and how you work Be gentle with your computerCleaning the cover of your computer Cleaning your computer display Computer stops respondingEthernet problems Memory module problemsNetworking problems Spills on the keyboardAn UltraNav pointing device problem Wireless LAN problemProblems with the keyboard and other pointing devices SolutionProblems with the display and multimedia devices Keyboard problemsComputer screen problems External monitor problems Audio problemsBattery problems Battery and power problemsPower problems Power button problem Sleep problemsUser Guide Getting support Getting help and serviceBefore you contact Lenovo Calling Lenovo Lenovo Support Web siteTelephone numbers Purchasing additional services Finding ThinkPad optionsUser Guide Wireless interoperability Wireless related informationLocation of the UltraConnect wireless antennas Appendix A. Regulatory informationElectronic emission notices Locating wireless regulatory noticesExport classification notice Federal Communications Commission Declaration of ConformityAppendix A. Regulatory information User Guide Appendix B. Weee and recycling statements Important Weee informationUser Guide Power plan Energy Saver settings when plugged into ac power Appendix C. Energy Star model informationUser Guide Appendix D. Notices Trademarks Page Part Number Printed 1P P/N
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