Lenovo 628323U manual Liquid crystal display LCD notice, Using headphones or earphones

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•Never turn on any equipment when there is evidence of fire, water, or structural damage.

•Disconnect the attached power cords, battery pack, and all the cables before you open the device covers, unless instructed otherwise in the installation and configuration procedures.

•Do not use your computer until all internal parts enclosures are fastened into place. Never use the computer when internal parts and circuits are exposed.

DANGER

Connect and disconnect cables as described in the following procedures when installing, moving, or opening covers on this product or attached devices.

To connect:

1.Turn everything OFF.

2.First, attach all cables to devices.

3.Attach signal cables to connectors.

4.Attach power cords to outlets.

5.Turn devices ON.

To disconnect:

1.Turn everything OFF.

2.First, remove power cords from outlets.

3.Remove signal cables from connectors.

4.Remove all cables from devices.

The power cord must be disconnected from the wall outlet or receptacle before installing all other electrical cables connected to the computer.

The power cord may be reconnected to the wall outlet or receptacle only after all other electrical cables have been connected to the computer.

Liquid crystal display (LCD) notice

CAUTION:

The liquid crystal display (LCD) is made of glass, and rough handling or dropping the computer can cause the LCD to break. If the LCD breaks and the internal fluid gets into your eyes or on your hands, immediately wash the affected areas with water for at least 15 minutes; if any symptoms are present after washing, get medical care.

Note: For products with mercury-containing fluorescent lamps (for example, non-LED), the fluorescent lamp in the Liquid crystal display (LCD) contains mercury; dispose of according to local, state, or federal laws.

Using headphones or earphones

CAUTION:

Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the equalizer to maximum increases the earphone and headphone output voltage and the sound pressure level. Therefore, to protect your hearing, adjust the equalizer to an appropriate level.

Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if the output of the headphone or earphone connectors do not comply with specifications of EN 50332-2. The headphone output connector of your computer complies with EN 50332-2 Sub clause 7. This specification limits the computer’s maximum wide band true RMS output voltage to 150 mV. To help protect against hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 limits) for a wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-2 can be dangerous due to excessive sound pressure levels.

If your Lenovo computer came with headphones or earphones in the package, as a set, the combination of the headphones or earphones and the computer already complies with the specifications of EN 50332-1. If different headphones or earphones are used, ensure that they comply with EN 50332-1 (Clause 6.5

xUser Guide

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Contents User Guide Safety, Warranty, and Setup Guide Regulatory Notice Contents Appendix B. Weee and recycling Statements Read this first Protect yourself from the heat that your computer generatesPrevent your computer from getting wet Protect the cables from being damagedImportant safety information Conditions that require immediate actionHandle your computer gently Carry your computer carefullySafety guidelines Service and upgradesPower cords and power adapters Extension cords and related devicesPower supply statement Plugs and outletsExternal 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 Locating computer controls, connectors, and indicators Product overviewFront view CameraSystem status indicator Power buttonRight-side view MicrophoneUSB 2.0 connector Power status indicatorAc power connector Media card reader slotVGA connector USB 3.0 connectorsEthernet connector Left-side viewStatus indicators System status indicatorsBottom view User Guide Wireless status indicator Power status indicatorLocating important product information Machine type and model labelFCC ID and IC Certification number label Features SpecificationsPower source ac power adapter Battery packBattery life Operating environmentUsing your computer Frequently asked questionsHow can I use the battery power more effectively? Registering your computerSpecial keys How do I give presentations or attach an external monitor?How do I attach or replace a device? Using the UltraNav pointing device Using the TrackPoint pointing deviceUsing the touch pad Changing the capCustomizing the touch pad Power management Checking the battery statusUsing the ac power adapter Connecting the ac power adapterCharging the battery Maximizing the battery lifePower-saving modes Handling the batteryUsing your computer Connecting to a wireless LAN Establishing wireless LAN connectionsGo to Settings Internet connection Wi-Fi network Wireless LAN connection statusConnecting a projector or an external monitor Tips for using the wireless LAN featureConnecting an external monitor Attaching an external monitorUsing audio features Using the cameraUsing a flash media card Inserting a flash media card Removing a flash media cardUser Guide Accessibility and comfort You and your computerErgonomic information Accessibility information ComfortTravel accessories Traveling with your computerTravel tips Assistive technologiesUser Guide Replacing the battery Replacing devicesStatic 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 Troubleshooting computer problems Be careful about where and how you workTaking care of your computer Be gentle with your computerCleaning the cover of your computer Cleaning your computer display Computer stops respondingMemory module problems Networking problemsEthernet problems Spills on the keyboardWireless LAN problem Problems with the keyboard and other pointing devicesAn UltraNav pointing device problem SolutionKeyboard problems Problems with the display and multimedia devicesComputer screen problems External monitor problems Audio problemsBattery and power problems Battery problemsPower problems Power button problem Sleep problemsUser Guide Getting help and service Getting supportBefore you contact Lenovo Lenovo Support Web site Calling LenovoTelephone numbers Purchasing additional services Finding ThinkPad optionsUser Guide Wireless related information Location of the UltraConnect wireless antennasWireless interoperability Appendix A. Regulatory informationLocating wireless regulatory notices Export classification noticeElectronic emission notices 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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