© 2011 Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of The Complete A+ Guide to PC Repair 5/e Chapter 1 Introduction to Computer Repair

© 2011 Pearson Addison-Wesley. All rights reserved. Certifications Certifications are important especially for people who do not have experience. –May get them an interview –Shows they know the basic information for the job –Does not demonstrate ability to think logically, troubleshoot problems, or deal with people in a professional manner –Validates experienced technicians proficiency and up-to-date knowledge

© 2011 Pearson Addison-Wesley. All rights reserved. A+ Certification The A+ Certification is a non-vendor specific industry standard certification. Does not guarantee someone a job Is required by a lot of companies and agencies Consists of two exams – A+ Essentials – IT Technician CompTIA states that it measures competencies for an IT professional with at least 1000 hours of hands-on experience in the lab or field. This book, The Complete A+ Guide to PC Repair 5 th Edition by Cheryl A. Schmidt, covers material for both exams.

© 2011 Pearson Addison-Wesley. All rights reserved. Preliminary Safety Notes Turn off and unplug the computer when taking the computer apart, installing parts, removing parts, or performing preventive maintenance. Computer Power Power Supply and CRT Monitor Do not take these components apart without specific training. They hold a charge and can hurt you.

© 2011 Pearson Addison-Wesley. All rights reserved. Explore qualities of a good computer support person Qualities Parts Ports Discover the major parts of the computer Identify ports seen on a computer Overview

© 2011 Pearson Addison-Wesley. All rights reserved. Technician Qualities Active listening Good, positive attitude Active listening Good, positive attitude Know technical terms, but explain in easy to understand words Humbleness A good technician…

© 2011 Pearson Addison-Wesley. All rights reserved. Beginning Terms Hardware Software Firmware The physical components Case, keyboard, power supply, mouse  Operating systems such as Windows 7, Red Hat Linux, Snow Leopard A combination of hardware and software such as chips on an adapter (hardware) that contain software to control and customize the adapter or the BIOS on the motherboard.  Applications such as Adobe Acrobat and Microsoft PowerPoint

© 2011 Pearson Addison-Wesley. All rights reserved. Hardware and Software Interaction Notice how the operating system communicates with hardware through the kernel and the operating system. Another way the operating system communicates with hardware is directly through the BIOS (which is not shown). –This is especially important for integrated components inside the computer.

© 2011 Pearson Addison-Wesley. All rights reserved. Basic Computer Parts

© 2011 Pearson Addison-Wesley. All rights reserved. Basic Computer Parts

© 2011 Pearson Addison-Wesley. All rights reserved. Basic Laptop Parts

© 2011 Pearson Addison-Wesley. All rights reserved. Basic Laptop Parts DC power port Media bay

© 2011 Pearson Addison-Wesley. All rights reserved. Basic Motherboard Parts

© 2011 Pearson Addison-Wesley. All rights reserved. Other Major Parts Motherboard –RAM –Flash memory –Expansion slots –Adapters Memory –RAM (Random Access Memory) Volatile or contents are gone if power is removed –ROM (Read Only Memory) Contents cannot be changed –Stores less than hard drives

© 2011 Pearson Addison-Wesley. All rights reserved. Basic Ports DB-25 (parallel) DB-9 (serial) DB-15 (game) DINs are notched/ keyed D-shell connectors are shaped like the letter D turned to the right.

© 2011 Pearson Addison-Wesley. All rights reserved. Video Ports DVI –Flat panel monitors, LCDs S-Video –TVs, VCRs, cameras, external video devices VGA –Older CRT monitors

© 2011 Pearson Addison-Wesley. All rights reserved. USB Ports 127 devices on a single port 1.0 –1.5 and 12Mbps 2.0 –Plus sign (+) –480Mbps 3.0 –SS (SuperSpeed) –5Gbps Mini versions available Converters of all types are available

© 2011 Pearson Addison-Wesley. All rights reserved. USB “mini” Connectors Common on –Cameras –Digital media readers –External hard drives Three types –Mini-A –Mini-B –Mini-AB Mini-B USB Connector

© 2011 Pearson Addison-Wesley. All rights reserved. Parallel Port Also known as a printer port DB-25 (25-pin) female port Replaced by USB Transmits data 8 bits at a time

© 2011 Pearson Addison-Wesley. All rights reserved. Serial Port Also known as a COM, RS-232, or asynchronous port DB-9 (9-pin) male port and an older DB-25 male port Replaced by USB Transmits data 1 bit at a time If a serial port is needed such as to configure a router, a USB to serial converter can be purchased.

© 2011 Pearson Addison-Wesley. All rights reserved. Mouse Keyboard Keyboards and Mice Wired –Mini-DIN or PS/2 port (not interchangeable) –USB port Wireless –Bluetooth –RF Mouse types –Mechanical (rubber ball) –Optical (LEDs) Keyboard types –Mechanical Cheaper, most common, more error-prone –Capacitive More complex design

© 2011 Pearson Addison-Wesley. All rights reserved. Preventive Maintenance Mouse –Cleaning kits –Optical: damp, lint-free cloth for the bottom –Mechanical mouse ball: clean with mild detergent, rinse, and dry thoroughly. For rollers, lint-free cloth with alcohol; otherwise, fingernail, small screwdriver, straightened paper clip. Keyboard –Cleaning wipes –Compressed air –Cotton or lint-free swab between keys –Upside down shake

© 2011 Pearson Addison-Wesley. All rights reserved. Wireless Input Devices Infrared –Shorter distances and cheaper Radio –Interferences from other devices Troubleshooting –Battery –Line of site with infrared –Move device or transceiver –Interference –Device recognized by operating system

© 2011 Pearson Addison-Wesley. All rights reserved. Other Input Devices

© 2011 Pearson Addison-Wesley. All rights reserved. Sound Card Ports Converts digital signals to sound (analog signal) and vice versa Can be on the motherboard or on an adapter

© 2011 Pearson Addison-Wesley. All rights reserved. Sound Card Ports Commonly have symbols that designate the purpose of the port Standardized colors –Orange – Center speaker or subwoofer –Black – Rear speaker –Light blue – Line in –Lime – Line out –Pink – Microphone –Gray – Side speaker

© 2011 Pearson Addison-Wesley. All rights reserved. IEEE 1394 Port 63 devices can connect to a single port (using hubs) Speeds of 100, 200, 400, 800, 1600, and 3200Mbps Also called FireWire or i.Link Faster than USB Supports hot swapping Click to see a laptop port Next ► Next ►

© 2011 Pearson Addison-Wesley. All rights reserved. IEEE 1394 Port 4-, 6-, and 9-pin connectors –4-pin on consumer electronics –6-pin on computers –9-pin used on 800Mbps connections Newer standards support RJ-45 and fiber connectors 6-pin4-pin9-pin

© 2011 Pearson Addison-Wesley. All rights reserved. Network Ports Connects a computer to other computers, a network, which could include a server and a printer among other devices. Two types –Ethernet Most common type RJ-45 port –Token Ring Not very common

© 2011 Pearson Addison-Wesley. All rights reserved. Ethernet Ports Most common Types –BNC (old) –15-pin female D-shell (old) –RJ-45 Connects to UTP cable

© 2011 Pearson Addison-Wesley. All rights reserved. Modem Ports A modem connects a computer to a phone line. –Has one or two RJ-11 ports A modem can be an adapter or an external device. –The adapter has two connectors for connecting the phone cables. Line port has a cable that goes to the phone jack on the wall. Phone port has a cable that connects to a telephone. –An external modem connects to a serial port. Phone cables use the same ports as the internal modem.

© 2011 Pearson Addison-Wesley. All rights reserved. Integrated Motherboards Mouse Keyboard Coax S/PDIF Optical S/PDIF IEEE USB ports Mini- IEEE 1394 (FireWire) 2 USB ports RJ-45 NIC 2 USB ports 6 audio ports Center speaker Rear speaker Side speaker Line in Line out Microphone

© 2011 Pearson Addison-Wesley. All rights reserved. Gets data to the port faster than if the port was on an adapter Saves on the number of expansion slots needed or used Easier to troubleshoot and support Pros of Integrated Motherboards

© 2011 Pearson Addison-Wesley. All rights reserved. May have ports you don’t need or want You have to add an adapter or replace the motherboard. What if there is not an available slot? The port may not be as high a quality as an adapter you might buy Cons of Integrated Motherboards

© 2011 Pearson Addison-Wesley. All rights reserved. Docking Station A docking station allows a laptop to be more like a desktop computer. –Commonly has connections to a monitor, printer, keyboard, and mouse

© 2011 Pearson Addison-Wesley. All rights reserved. Port Replicator Similar to a docking station Does not include any expansion slots or drive storage bays. –Attaches to the laptop and allows external devices such as monitor, keyboard, and mouse to be connected.

© 2011 Pearson Addison-Wesley. All rights reserved. Port Round-up

© 2011 Pearson Addison-Wesley. All rights reserved. Addison Wesley is an imprint of Questions???