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Chapter 8 Basic Computer Maintenance

Chapter 8 Basic Computer Maintenance. 8.1 Preventive Maintenance 8.2 Monitoring System Performance 8.3 Symptom, Cause and Solution 8.4 Safety Issues. 8.1 Preventive Maintenance. Surge protector inserted in AC utility line and telephone line

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Chapter 8 Basic Computer Maintenance

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  1. Chapter 8 Basic Computer Maintenance • 8.1 Preventive Maintenance • 8.2 Monitoring System Performance • 8.3 Symptom, Cause and Solution • 8.4 Safety Issues

  2. 8.1 Preventive Maintenance • Surge protector • inserted in AC utility line and telephone line • prevent transients (damage to electronic equipment from voltage spikes) • a small box with utility outlets, a power switch and a 3-wire cord • used with semiconductor-based hardware • printer, monitor, external disk drives, modem

  3. 8.1 Preventive Maintenance • Surge suppressor • prevent the peak AC voltage from going above a certain level • use a 3-wire AC power connection

  4. 8.1 Preventive Maintenance • Keep all liquids away • Get grounded before handling hardware • Avoid installing components when the computer is in operation • Defragment the hard drive regularly • Scan the disk regularly for errors

  5. 8.1 Preventive Maintenance • Avoid removing any floppy disks from the driver when the indicating lights are on. • Avoid switching off the computer when the hard disk lights are on. • Uninstall software by • “Add / Remove Program” function in Control Panel • uninstall function of applications

  6. 8.1 Preventive Maintenance • Back up the system on a regular basis • by optical storage peripherals • Reserve sufficient space for computer to dissipate heat

  7. Brush: remove dust Liquid detergent: clean the outside of computer 8.1 Preventive Maintenance • Clean the computer regularly

  8. Canned compressed air: remove dust inside the computer 8.1 Preventive Maintenance • Clean the computer regularly Vacuum cleaner: remove dust and dirt inside the computer

  9. Contact cleaner: clean the conducting points and connectors between hardware 8.1 Preventive Maintenance • Clean the computer regularly

  10. 8.2 Monitoring System Performance • Problems encounter after system operates for some time • System slow down at startup • Take a long time to switch between programs • Programs take long time to load • Windows Task Manager is used to monitor the system performance

  11. 8.3 Symptom, Cause and Solution • Problem 1 • Symptom • Computer takes a long time to load the OS • Possible cause • Many programs loads into Windows during start-up • Verify assumption • Observe how many applications are loaded by Windows Task Manager • Solution • Delete programs in “Start Menu” folder

  12. 8.3 Symptom, Cause and Solution • Problem 2 • Symptom • Computer takes a long time to switch between programs • Possible cause • Not enough physical memory in the system • Verify assumption • Use the system monitor • Solution • Add additional memory if necessary • Replace smaller capacity memory with a larger one

  13. 8.4 Safety Issues • Electrical safety • Turn off the power to PC and peripherals before cleaning • Disconnect the PC from power socket when accessing the inside of PC case • Avoid leaving the case open with the power on • Never disassemble the monitor

  14. 8.4 Safety Issues • Mechanical safety • Be careful when working • Never put anything into running cooling fan • Laser safety • Never disassemble optical drives (e.g. CD-ROM and DVD-ROM)

  15. 8.4 Safety Issues • Good work habits • Plan your work • Organise and prepare the workplace • Handle everything with care • Never use excessive force

  16. END

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