Transcript Basic Computer Maintenance

Chapter 8
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8.1
8.2
8.3
8.4
Basic Computer
Maintenance
Preventive Maintenance
Monitoring System Performance
Symptom, Cause and Solution
Safety Issues
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
8.1 Preventive Maintenance
Surge suppressor
prevent the peak AC voltage from going above
a certain level
use a 3-wire AC power connection
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
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
8.1 Preventive Maintenance
Back up the system on
a regular basis
by optical storage
peripherals
Reserve sufficient
space for computer to
dissipate heat
8.1 Preventive Maintenance
Clean the computer regularly
Brush: remove dust
Liquid detergent: clean the
outside of computer
8.1 Preventive Maintenance
Clean the computer regularly
Canned compressed air: remove
dust inside the computer
Vacuum cleaner: remove dust
and dirt inside the computer
8.1 Preventive Maintenance
Clean the computer regularly
Contact cleaner: clean the
conducting points and connectors
between hardware
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
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
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
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
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)
8.4 Safety Issues
Good work habits
Plan your work
Organise and prepare the workplace
Handle everything with care
Never use excessive force
END