Troubleshooting Keyboard problems | Lenovo K23 specs

Chapter 5. Troubleshooting

Keyboard problems

A number appears when	• The numeric lock function is on. To disable it, press
you enter a letter.	Fn + Insert.

Standby or hibernation problems

The computer enters	• If the processor overheats, the computer automatically
standby mode unexpect-	enters standby mode to allow the computer to cool
edly.	and to protect the processor and other internal
	components. Check the settings for standby mode.
The computer enters	• Make sure that:
standby mode immediately	- The battery is charged.
after Power-on self-test	- The operating temperature is within the acceptable

(POST).	range. See “Appendix B. Use, and care
	range. See “Appendix B. Use, and care
	Information” on page 64.

Note: If the battery is charged and the temperature is within range, have the computer serviced.

The critical low-battery error	• The battery power is getting low. Connect the AC
message appears, and the	adapter to the computer, or replace the battery with
computer immediately turns	a fully charged one.
off.

44

Image 58

Lenovo K23 manual Troubleshooting Keyboard problems, Standby or hibernation problems

Contents

Lenovo K23 First Edition July Copyright Lenovo Respective Users Explanation of hard disk capacity Page Page Contents 125 Contents Appendix C. Lenovo limitedAppendix F. Features 127 „ Read this first Important safety informationImportant safety information Iii Important safety information Unpack Important safety information Working place Important safety information On using Important safety information Vii Important safety information Service and upgrades Viii Getting to know your computer Getting to know your computer Built-in TouchpadMicrophone ESATA/USB Left-side viewCombo port Right-side view USB port Display latch Wireless deviceSwitch Integrated AC power Adapter jack Bottom view Battery pack Battery latch manual Learning the basics „ Connect to the powerInstall the battery pack „ Read the manuals Learning the basics „ Configure the operating system„ Turn on the computer Putting your computer into standby/sleep state „ Shutting down your computer „ Checking battery status Using AC adapter and battery„ Charging the battery „ Removing the battery pack „ Handling the battery Using the touchpad Left click button Using the keyboard „ Numeric keypad „ Function key combinations Learning the basics Special buttons Custom button Learning the basics Mute buttonOneKey Rescue System button System status indicators C d Securing your computer „ Attaching a security lock not supplied „ Using passwords „ Fingerprint reader Connecting external devices „ Using memory cards not supplied „ Inserting a memory card „ Connecting an ExpressCard device„ Removing a memory card Learning the basics Inserting an ExpressCard/34 device Removing an ExpressCard/34 device „ Connecting a universal serial bus USB device Enabling Bluetooth communications on your computer Using the Internet Wired connection „ Hardware connection „ Software configurationUsing the Internet Cable Wireless connection Wi-Fi Software configuration „ Using Wi-Fi/WiMax specific models onlyEnabling wireless connection Hardware connection „ Using Mobile Broadband specific models only Inserting the SIM card Using the Internet OneKey Rescue System OneKey Rescue System„ Introduction OneKey Rescue System OneKey Rescue System Troubleshooting Frequently asked questions Troubleshooting Where are the recovery discs? When do I need to restore the system to the factory status? Troubleshooting Display problems Password problem Computer is on Troubleshooting Keyboard problems Standby or hibernation problems Computer does not return from standby mode and does not work Troubleshooting Computer screen problems Screen is blank Battery problems Troubleshooting Sound problemsHard disk drive problem OneKey Rescue System problems Troubleshooting Startup problemOther problems Connected external „ To replace the battery Replacing the batteryUpgrading and replacing devices Upgrading and replacing devices Replacing the hard disk drive Handling a hard disk drive Upgrading and replacing devices Upgrading and replacing devices Replacing memory Upgrading and replacing devices Upgrading and replacing devices Upgrading and replacing devices Appendix A. Getting help and service Appendix A. Getting help and service Getting help on the Web Appendix A. Getting help and service Appendix A. Getting help and service Warranty Service Telephone Numbers Getting help around the world Appendix B. Use, and care Information „ Be careful about where and how you workCaring for your computer „ Notice of static-electricity Appendix B. Use, and care Information „ Be gentle with your computer „ Carry your computer properly „ For outdoor use „ Handle storage media and drives properly „ Take care in setting passwords „ Data safety„ Other important tips Appendix B. Use, and care Information Accessibility and comfort „ Ergonomic information „ What if you are traveling? „ Questions about vision? Maintenance „ General tips for maintenance Appendix B. Use, and care Information „ Cleaning the cover of your computer „ Cleaning your computer keyboard „ Cleaning your computer display Appendix C. Lenovo limited warranty „ What this warranty covers „ What your service provider will do to correct problems „ How to obtain warranty serviceAppendix C. Lenovo limited warranty Information „ Replacement of a product or part „ Your additional responsibilities „ Use of personal information „ What this warranty does not cover „ Limitation of liability „ Dispute resolution „ Other rights „ European Economic Area EEA „ Lenovo Turkey address Lenovo Technology B.V. Turkiye Istanbul Subesi Warranty information „ Types of warranty service Customer Replaceable Unit CRU Service Courier or Depot Service Appendix C. Lenovo limited warranty On-site ServiceCustomer Carry-In or Mail-In Service Appendix C. Lenovo limited warranty Product Exchange Service Appendix D. Customer replaceable units CRUs Appendix D. Customer replaceable units CRUs Appendix E. Notices Appendix E. Notices „ Export classification notice Lenovo License Agreement Entitlement License Transferability Software Product Specifications 100 No WarrantyAppendix E. Notices Charges 101 Appendix E. Notices Limitation of Liability Appendix E. Notices Consumer Rights 102General Appendix E. Notices Dispute Resolution 103 Energy Star model information 104 Windows XP 105Windows 106 107 „ Wireless interoperability 108 „ Usage environment and your health 109 „ Safety information related to Mobile Broadband 110 111 „ Federal Communications Commission FCC Statement Electronic emissions notices112 „ Industry Canada Class B Emission Compliance Statement 113 „ German Class B Compliance Statement „ Avis de conformité à la réglementation d’Industrie Canada114 115 „ European Union Compliance Statement Class B Compliance 116 117 „ Korea Class B „ Japan Compliance Statement for Power line Harmonics118 „ General recycling statement Weee and recycling statements119 EU Weee statements 120 Japan recycling statements 121 „ Disposing of a Lenovo Computer Components 122 123 124 Model Name K23 Appendix F. Features and specifications125 Form Factor 126 Appendix F. Features and specifications PortsOthers 127 Trademarks Index 128 129 Index 130 Do not Return IT to the Store If your product is not working correctly New World. New Thinking.TM