Lectures 10 Laptops and Portable Devices
Contents
1. Laptop Components vs Desktop Components Motherboard e Desktop motherboards have standard form factors e Laptop motherboards vary by manufacturer and are proprietary Laptop Motherboard Desktop Motherboard Laptop Components vs Desktop Components CPU e Laptop processors are designed to use less power and create less heat e Do not require large cooling devices e Use CPU throttling e Modifies the clock speed as needed e Reduce power consumption and heat e Slight decrease in performance e Increases the lifespan of some components SKO O ts Laptop Components vs Desktop Components Power Option e Power management controls the flow of electricity to the components of a computer e When plugged in the laptop power management sends electricity from the AC power source to the laptop components e Otherwise the laptop power management takes electricity from the battery e Advanced Power Management APM e Earlier version of power management With APM the BIOS was used to control the settings for power management e Advanced Configuration and Power Interface ACPI e Offers additional power ina 2x Fr zZ 3 OS controls the power r sel sila gees gees Power scheme TC Powe schemes CT sows Okie Seting fr Por Sava pona aches p Serino er Here Otice Desk pover chen When computer is 1 Pedin g ine Tuan of mortar men2. Slower than DSL Cable higher setup costs Selecting Components Installation and removal of components e Best friend Service Manual Selecting Components Batteries e When you need a new laptop battery e Laptop shuts off when AC power is removed e Battery is leaking e Battery overheats or does not hold a charge e Three common types e Nickel Cadmium Ni Cd e Nickel Metal Hydride Ni MH e Lithium lon Li Ion e Most common type used today e Powerful e Immune to memory problems e Built in circuitry to prevent accidental overcharginc Laptops and portable devices Preventive maintenance e Everything you normally do to maintain a PC applies to portable PCs e Windows patches and Service Packs e Upgrading drivers e Error checking e Defragmenting and Disk Cleanup e Plus there are other issues e Batteries e Power Management e Cleaning and heat e Protecting the portable from harm e Transport operating environment E KOr amp L Laptops and portable devices Preventive Battery maintenance e Batteries should be stored in a cool place e Ni Cd and Ni MH batteries should be conditioned by using a special charger e Battery contacts should be kept clean using a little alcohol or dry cloth e Never handle a ruptured battery e Used or old batteries should be recycled SKO O gt 7 Laptops and portable devices Troubleshooting e Laptop wont power on e Verify the outlet is
3. Tuan off mortar are 2S maret Ei fatter 25 me Tun off had dies o a TEN E to Laptop Components vs Desktop Components Expansion Capabilities e Desktop computers provide more ports USB eSata serial e USB sSata FireWire standards e Hot swappable e Expansion capabilities of laptops can be increased with PC Cards and USB hubs e Laptops have limited expansion bays that are designed to allow different types of drives to fit into the same bay So en R9 T Laptops and portable devices Configuration e To allow applications and processes to run smoothly e Configure and allocate system resources e Change environmental settings to match software requirements e A laptop can be customized for specific purposes by adding external components e Adding external components is usually accomplished through the use of Plug and Play but occasionally driver installation and additional configuration may be required e Follow safe removal procedures when disconnecting hot swappable and non hot swappable devices So en Pe Laptops and portable devices Power Settings e Start gt Control Panel gt Power Options e Power Schemes are a collection of settings that manage the power usage of the computer e Hibernate e Standby e Low battery warnings 2 xX Power Options Propertie Power Schemes scheme with the most appropriate settings for modify hs compu Note that changing
4. good e Verify the AC adapter is good e Remove all peripherals e Screen doesn t come on properly e Make sure the display is on e Press FN key combination to activate the screen e Bad inverter or CCFL dim screen e Wireless networking doesn t work e Check for physical switch to turn it on e Ensure you re in range KA Laptops and portable devices Troubleshooting e Handwriting is not recognized e May need to retrain the digitizer e Keypad doesn t work e Probably unseated keypad connector e Check manufacturer s disassembly procedures e Touchpad doesn t work e Clean with compressed air e May need to reconfigure touchpad driver ROIS 3 Pe Laptops and portable devices Troubleshooting e Numbers appear during normal QWERTY typing e Check the NUMLOCKS key e Laptop screen turns on and off while typing e User might be pressing the CRT LCD keyboard button by mistake e Touchpad overly sensitive or not sensitive enough e Adjust in the Control Panel applet ROIS 3 Pe GSK Op gt Dp er ep F O amp
5. the settings below will the selected scheme After 10 mins After 5 mins Never Laptops and portable devices e Mobile phone standards Internet Standard Purpose Advanced Laptops and Portable Devices Laptops and portable devices Wireless Communication Methods e Bluetooth e Infrared e Cellular e WI FI e Satellite Laptops and portable devices Bluetooth e Designed to create small wireless networks Personal Area Networks PANs e Connecting peripherals such as keyboards mice headsets to the PC e Low power low cost and small size e Piconet vs Scatternet Class 1 100 mW 100 meters Class 2 2 5 mW 10 meters Class 3 1mW 1 meter so Le Pe Laptops and portable devices Infrared IR e Infrared devices connect using light waves e Simple way to share data without adding any additional hardware or software e Short range 1m low throughput 4Mbps wireless technology e Line of sight required e No authentication or encryption Standard Infrared IrDA Max throughput Up to 4 Mbps Max range 1 meter 39 inches 69 K Oz q Security None Compatibility IrDA Communication mode Point to point ad hoc Laptops and portable devices Cellular e PDAs and smartphones today allow connection to the Internet e Can add this to laptop with PC Card or USB e Downloads as quick as 400 to 700 Kbps GPRS 56 114 Kbps e Cellular networks have their ow
6. Lectures 10 Laptops and Portable Devices Computer Systems Administration 1E2003 Lecture overview e At the end of lecture 10 students can identify describe and discuss e Laptops and portable devices e Components of a laptop e Laptop components vs Desktop components e Wireless communication for laptops and portable devices e Component selection e Preventive maintenance of laptops e Troubleshooting laptops A ol en Pe Fundamental Laptops and Portable Devices mih Jan eee Pp ie Mike Meyers CompTIA A Guide to Managing and Troubleshooting PCs Laptops and portable devices e Advances in technology have resulted in laptops and portable devices that e Cost less e LCD Screen is the major contributor to cost e Weigh less e Osborne I the 1st portable computer weighed 10 Kg e Do more e Games e Web surfing e e mail e Instant messaging e Notebooks laptops tablets PDAs Netbooks Smartphones Ca Common uses Laptops e Taking notes filling out forms e Presenting information e Data access and processing e Entertainment Games movies e Internet PDAs e Organize information e Field sales Smartphones e PDA mobile phone e Media players internet access GPS Wi Fi camera sensors ra ol ie amp Laptops and portable devices Main components e Small and portable e Integrated LCD screen in the lid e Integrated keybo
7. ard e AC power source or rechargeable battery e Hot swappable drives and peripherals e Some type of docking station or port replicator to connect to peripherals ROIS sS Pe Laptops Dell Latitude E6400 Components found on the outside TOP e Status leds AC connector Audio jacks Ports USB Ethernet VGA PC card DVD ROM security keyhole Ventilation Speaker etc Laptops Dell Latitude E6400 Components found on the outside BOTTON e HDD or SSD access panel e RAM access panel A 2 J e Battery latch N 5 Dock Station Connector Laptops Dell Latitude E6400 Input devices e Keyboard Touchpad e Point controller e Buttons e Power e Volume e Side e Wireless e Bluetooth e Function ke Laptops Dell Latitude E6400 Docking station Port Replicator Manufacturer and model specific Power button Eject button Laptop connector _ Several ports USB VGA DVI Serial m Ethernet lt lt Key lock Laptop Components vs Desktop Components e Desktop components tend to be standardized They usually meet universal form factors Laptop manufacturers focus on refining laptop components to make them more efficient and compact as a result laptop components are proprietary e You may not be able to use components made by one laptop manufacturer to repair a laptop made by another manufacturer Born 2 Pe
8. n protocols such as General Packet Radio Service GPRS and Global System for Mobile Communications GPM e Downside is the price Laptops and portable devices Bluetooth 1 3 Mbps Infrared IR 56 Kbps Cellular 56 114 Kbps Wi Fi 11 100 Mbps Satellite 500 Kbps Purpose Radio frequency creating a WPAN connecting portable devices Light waves used as a data transmission medium Cellular signal creating a WWAN Radio frequency creating high speed WLAN High speed Internet access ideal when no other broadband access available Devices Laptop printer camera PDA cell phone smartphone hands free headset projector PDA printer remote control wireless mouse wireless keyboard Laptop cell phone PDA smartphone Laptop printer and other network devices Laptop GPS devices smartphone Range Low power short range 1 to 100 meters 3 to 330 feet low power short range 1 meter low through put Within several miles of cellular tower 33 to 100 meters 100 to 300 feet To the satellite Comparing wireless technologies Freguency 2 4 to 2 485 GHz 100 GHz to 1000 THz 850 to 1900 MHz 2 4 GHz or 5 0 GHz Up to 5 000 channels per satellite Limitation Device must be Bluetooth compatible Susceptible to Interference and dilution Only where cell signal reaches The 2 4 GHz range is unregulated and heavily used
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