Presentation on theme: "A+ Certification Guide Chapter 1 Technician Essentials and PC Anatomy."— Presentation transcript:
A+ Certification Guide Chapter 1 Technician Essentials and PC Anatomy
Chapter 1 Objectives The Essential Parts of Any Computer: –The vital components of a PC—an overview Hardware, Software, and Firmware: –Explain how hardware, software, and firmware interact, and define the major types of software and utility programs. Points of Failure: –Learn about possible issues that could cause the computer to fail— for example, overheating, hard drive failure, or loose adapter cards. The CompTIA Six-Step Troubleshooting Process PC Tools: –Demonstrate how to assemble/disassemble the computer safely. Resources to prepare for the exam: –Websites and exam resources.
Essential Parts of a Computer Storage devices Motherboards Power supplies Processors/CPUs Memory Display devices Input, multimedia, and biometric devices Adapter cards Ports and cables Cooling systems
Figure 1-4 01fig04 Illustration: Please add callouts as indicated and initial-cap Proprietary. Example: A Laptop PC Side View
Figure 1-5 01fig05 Illustration: Please add callouts as indicated remove hyphen and space for DVD multioptical drive. Example: A Laptop PC side view
Points of Failure Overheating: –Failure of the fans in the power supply or those attached to the processor, northbridge chip, or video card can cause overheating. Loose peripheral card: –A loose add-on card might not be detected by plug-and-play or might have intermittent failures after installation. Inability to start the computer: –Loose processor/memory module can prevent the computer from starting. Drive failures: –Improperly connected power or data cables, or improperly configured jumper blocks, will not work properly. Front panel failures: –Cables connecting the case switch, reset switch, and status lights. Battery failure BIOS chip failure
Hardware, Software, and Firmware Hardware: –Components that can generally be touched or seen. –Often a source of failure: Loose connections Physical damage Electrical damage (electrostatic, voltage spikes/surges) Incompatibility of devices with other devices Software: –Drivers used to control the hardware –Applications used to generate user data –Protocols to transmit data over the network –Internal/external commands to control the system
The CompTIA Six-Step Troubleshooting Process StepDescription Step 1Identify the problem. Step 2 Establish a theory of probable cause. (Question the obvious.) Step 3Test the theory to determine the cause. Step 4 Establish a plan of action to resolve the problem and implement the solution. Step 5 Verify full system functionality and, if applicable, implement preventative measures. Step 6Document findings, actions, and outcomes.
Tools: Working Inside the PC Opening the Case: Different manufacturers have different case access mechanisms. Protect your system against electrostatic discharge (ESD). Common Tasks: Connecting internal and external data cables. –Recheck periodically; can work loose over time. Installing a PCI card (for example, video or sound card). Replacing the power supply. Replacing the hard drive. Replacing the CD-ROM/DVD-ROM. Upgrading memory. Installing a USB support.
Illustration: This is a pick up of Figure 1-1 from "CompTIA A+ 220-701 and 220-702 Cert Guide“ 2e (ISBN: 978-0-7897-4790- 7). Figure 1-7 01fig07 Basic Tools for Assembly/Disassembly of Computers
Figure 1-8 Illustration: This is a pick up of Figure 2-6 from "CompTIA A+ 220- 701 and 220-702 Cert Guide“ 2e (ISBN: 978-0-7897-4790-7).
System and Testing Tools Multimeter: AC/DC voltage Ohms Amperage Power Supply Tester: Can save a motherboard from being ruined by a bad power supply Loopback plugs: Serial, network, and USB port testing
What Have You Learned? Name four common hardware failures. How does the CPU receive data? What device has the IRQ with the highest priority? Why is it important to use ESD precaution? What is a resource conflict? How is software different from firmware?
Exercise Activity 2.2: The motherboard and CPU.
Chapter 1 Summary Essential Parts of a Computer: –Motherboards, CPUs, video cards, and how to identify them. Hardware, Software, and Firmware Points of Failure: –Issues that could cause the computer to fail—for example, overheating, hard drive failure, or loose adapter cards. Six-Step CompTIA Troubleshooting Process Working Inside Your PC: –How to assemble/disassemble the computer safely. Next Lesson: Chapter 2