Barnes & Noble NOOK Tablet User Guide 17AirplanesWhen using your NOOK on an airplane, be sure to follow the instructions of the flight crew.To turn your NOOK’s wireless networking on or off, do this:1. Tap on the right end of the Status Bar to open the Quick Settings dialog box.2. Slide the Wireless switch on or off.3. Tap anywhere outside the Quick Settings dialog box to close it.Electronic EquipmentIf you are around sensitive electronic equipment–for example, if you are in a hospital–ask if you may use yourNOOK. You probably can if you turn off Wi-Fi networking. Settings such as intensive care units might forbid the useof any electronic device, with or without networking.BatteryYour NOOK includes a non-replaceable lithium ion battery. Do not attempt to replace the battery. If you suspectyour battery is having problems, please contact Customer Service at 1-800-THE-BOOK (1-800-843-2665).Caution About High Audio VolumeWARNING: Exposure to loud noise from any source for extended periods of time may affect your hearing. Thelouder the volume, the faster your hearing may be affected. To protect your hearing:• Limit the amount of time you use headsets or headphones at high volume.• Avoid turning up the volume to block out noisy surroundings.• Turn the volume down if you can’t hear people speaking near you. If you experience hearingdiscomfort, including the sensation of pressure or fullness in your ears, ringing in your ears, ormuffled speech, you should stop listening to the device through your headset or headphonesand have your hearing checked.Caring for Your NOOKTo take the best possible care of your NOOK, please follow the recommendations below.Temperature RangesYour NOOK should function as designed in these temperature ranges:Outside of these ranges, your NOOK might develop power, display, and/or software issues. If temperatures areextremely cold or hot, permanent physical damage can result. Such damage is not covered by the warranty. Storageapplies to temporary locations like the trunk of your car (or other motor vehicle) as well as long-term storage.
