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PC Support & Repair Chapter 13 Advanced Laptops & Portable Devices

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Objectives After completing this chapter, you will meet these objectives: Describe Bluetooth technology. Describe infrared technology. Describe cellular WAN technology. Describe Wi-Fi technology. Describe satellite technology.

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Bluetooth Wireless, short distance communication between devices Device can connect up to 7 others WPAN About 33 feet IEEE 802.15.1 2.4GHz Low power, cost, size Security through PIN

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Infrared Low power, short range Line of sight Cant go through walls 3 or less with computers Printer, keyboard, mouse

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Cellular WAN Data access through cellular network Needs adapter

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Wi-Fi 802.11a, b, g, n B, g, n use 2.4GHz A uses 5GHz Enable security or use VPN WPA/WPA2 (Wi-Fi Protected Access) 128-bit encryption Authentication

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Satellite For rural or remote user Faster then dial-up, slower than DSL High cost Satellite dish, modem, coax cable Bad weather can interfere

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Activity

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Review Which wireless specifies WPAN? 802.15.1 Which wireless transmits with line-of-sight? Infrared Why is 802.11a not compatible with g? A is on 5GHz What kind of encryption is best for Wi-Fi & how many bit? WPA/WPA2 128-bit

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Repairs Describe repairs for laptops and portable devices

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Repair or Replace? CRU Customer Replaceable Unit Battery, RAM FRU Field Replaceable Unit Not for customer to do Motherboard, LCD, keyboard B4 u fix, back up data & remove power, check warranty

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Lab 13.2 Investigate Repair Centers

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Selecting Components Select batteries. Select a docking station or port replicator. Select storage devices. Select additional RAM.

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Selecting Laptop Components Retail Pack or OEM Retail Documentation, warranty, drivers included OEM Little or no packaging, shorter warranty, good for system builders, can make more money

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Selecting Batteries What are signs of a bad battery? Test or try with a known good one Replace with same type Ni-Cad, NiMH, Li-Ion Handle with care Can explode Dispose/recycle

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Selecting Storage Devices CRU Internal Behind a cover on bottom Magnetic 2.5 with platters SSD with no moving parts Uses less power External USB or FireWire 1394 Optical

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Selecting RAM Some of RAM used for graphics SODIMM Check how many slots, type Remove battery & unplug! Check POST, BIOS, or System Properties after adding to verify

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Review What is the IEEE standard? 1394 What type of battery need to be drained & then recharged? Ni-Cad Before repairing a laptop, what three things should you do? Backup the data, remove all power sources, check warranty What danger do laptop batteries represent? They can explode

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Preventive Maintenance for Laptops Describe how to schedule and perform maintenance for laptops. Explain how to manage data version control between desktops and laptops.

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Maintenance Preventive maintenance Cleaning Air, mild cleaning, cotton swabs Hard drive (cleanup & defrag) Software Unplug & remove battery before cleaning

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Review

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Review- 12 Questions

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PC Support & Repair Chapter 13 Advanced Laptops & Portable Devices