1. PC Support & Repair Chapter 13 Advanced Laptops & Portable Devices

2. 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.

3. 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

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

5. Cellular WAN Data access through cellular network Needs adapter

6. 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

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

8. Activity

9. 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

10. Repairs Describe repairs for laptops and portable devices

11. 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

12. Lab 13.2 Investigate Repair Centers

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

14. 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

15. 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

16. 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

17. 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

18. 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

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

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

21. Review

22. Review- 12 Questions

23. PC Support & Repair Chapter 13 Advanced Laptops & Portable Devices