PC Support & Repair Chapter 13 Advanced Laptops & Portable Devices

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.

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

Infrared Low power, short range ▫ Line of sight ▫ Can’t go through walls ▫ 3’ or less with computers ▫ Printer, keyboard, mouse

Cellular WAN Data access through cellular network Needs adapter

Wi-Fi a, 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

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

Activity

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

Repairs Describe repairs for laptops and portable devices

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

Lab 13.2 Investigate Repair Centers

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

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

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

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

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

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

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

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

Review

Review- 12 Questions

PC Support & Repair Chapter 13 Advanced Laptops & Portable Devices