Computer Servicing III

Learn to repair and service personal computers. Start a business, get a job, develop your professional knowledge. A more involved computer servicing course that builds on Computer Servicing I & II.

Course CodeVIT205
Fee CodeS3
Duration (approx)100 hours
QualificationStatement of Attainment

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Gain advanced computer servicing skills.
This follows on from Computer Servicing II dealing further with more advanced computer repairs.
Is this course right for me?
This is the ideal course for people who are experienced in IT and are looking to improve on their knowledge.
Learn to:
  • Compare alternative solutions to different types of faults determined in PC computer systems
  • Repair hardware faults determined in PC computer systems
  • Repair software faults determined in PC computer systems
  • Install hardware components in a computer
Pre-requisites: Computer Servicing II (or equivalent)

Lesson Structure

There are 9 lessons in this course:

  1. Removable storage
    • Introduction; overview
    • Volatile memory
    • Non volatile memory
    • Magnetic disk media
    • Magnetic tape media
    • Magneto optical drives
    • Flash memory media
    • Pen drives
    • External hard drives
  2. Electronics
    • Silicon and computers
    • Linear electronics
    • Simple semiconductor devices
    • pn junction diode
    • Other diodes' zener, vericap, light emitting, etc
    • Bipolar transistors
    • Field effect transistors
    • Optoelectronics
    • Digital electronics
    • AND gate
    • OR gateNOT gate
    • NOR gate
    • NAND gate
    • XOR gate
    • XNOR gate
  3. Audio systems
    • Different audio files
    • MIDI sound files
    • Types of sound cards
    • How to install a sound card
    • How to configure software for a sound card
    • How does a sound card work
    • MP3
    • ASIO
    • Common problems with sound cards and how to solve them
  4. Video systems
    • Overview and Video system interfaces
    • Video card functions
    • PCI local Bus
    • Types of graphic cards
    • Types of monitors: CRT, LCD, LRD, Gas plasma
    • Multiple displays
    • Troubleshooting tips
  5. Laptops and other portable devices
    • PDA's -brief overview
    • Common problems
    • Blackberries and common problems
    • Rechargeable battery technology: NiCad, NiMh, Lithium ion
    • Dead cells
    • Digital cameras
    • Digital advantages
    • Chips and flash
    • Portable printers
    • Common printer problems and causes
    • Portable DVD
  6. Diagnosis and regular maintenance
    • Software types
    • System software
    • Utility software
    • Application software
    • Regular computer servicing: maintenance procedure
    • Disk cleanup
    • Disk defragmenter
    • The BIOS
    • Upgrading the BIOS
    • Troubleshooting BIOS Beep codes
    • Troubleshooting hardware
  7. Networking: an introduction
    • LAN
    • Types of LAN
    • LAN Topology
    • Hardware for a basic network
    • Network cards
    • Network cable
    • Networking devices
    • Types of networks
    • Wireless networks
    • Software licensing
    • Network security and information security
    • Proxy server
    • Intrusion detection systems
  8. The Internet
    • Security on the internet
    • Types of threats: viruses, trojan horses, adware and malware, Denial of service attacks,Spamming, Phising, Hoaxes, etc.
    • Page not found
    • Web traffic
    • Stuck in page
    • Broadband connections need firewalls
  9. Printers
    • Troubleshooting
    • Test parallel port driver and hardware
    • Test printer driver
    • Check the program
    • Check printing stack
    • Solving common printer problems
    • Printer cables
    • Power lead
    • Paper jams
    • Printer picking up multiple sheets
    • Paper won't feed
    • Toner smearing
    • Ghosting
    • Not printing from expected tray
    • Printer error messages

Each lesson culminates in an assignment which is submitted to the school, marked by the school's tutors and returned to you with any relevant suggestions, comments, and if necessary, extra reading.


  • Describe as many of the different forms of removable storage used by computer systems, digital cameras, PDA’s, MP3 players and other computer peripherals
  • Explain electronics as a basis for undertaking repairs to computers and peripherals.
  • Discuss the audio systems primarily on IBM compatible Pc’s but is also relevant to other systems such as the Apple Mac.
  • Discuss the video systems primarily on IBM compatible Pc’s but is also relevant to other systems such as the Apple Mac.
  • Suggest troubleshooting solutions for laptops, PDA’s, MP3 players, Digital cameras and other portable devices.
  • Discuss diagnosis and maintenance procedures to help identify and prevent common hardware and software problems.
  • Describe the connectivity of computer systems.
  • Discuss the Internet and common problems relating to its use.
  • Explain printers, their applications, and how to deal with printer related problems.

What You Will Do

  • Explain how to repair a range of hardware faults determined to be common.
  • Repair an inoperable printer cable for a computer
  • Delete unwanted files from an operating system (eg. DOS)
  • Explain how to repair a range of software faults determined to be common.
  • Delete unwanted files from an operating system (eg. DOS)
  • Recommend appropriate hardware for different applications
  • Explain how to replace a faulty power supply.
  • Explain how to replace a mother board.
  • Describe the installation of extra ram
  • Install an extra HDD to work in conjunction with the existing HDD


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Dr. Sherif Sakr

Research Scientist and University Lecturer in Computer Science and Engineering. Sherif has a PhD in Computer Science, MSc, BSc.
Martin Powdrill

25 years working in Telecommunications, IT, Organisational Development, and Energy Conservation & Efficiency, prior to setting up his own Permaculture consulting business. Martin has a Bsc (Hons) Applied Science (Resources Option), MSc Computer Studies, P
Josiane Joubran

CSC consultant with IBM, Software QA Engineer, Course Writer and Tutor. Josiane is an I.T professional with extensive experience with computer hardware and engineering in Lebanon and Australia. Josiane has a B.Eng., Grad.Dip.I.T., Master Info.Tech., MCP,
Sarah Jury

Over 15 years working in small business, I.T., education and science. Sarah has a PGCE(Post Compulsory Education), BSc(Hons) (Genetics), DipComp(Open), CertWebApps(Open). She has designed and created several Web sites for different organisations.