CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
In this session, you will learn to:
Objectives
Test and troubleshoot power supplies.
Test and troubleshoot memory.
Test and troubleshoot CPUs.
Test and troubleshoot system boards.
Ver. 1.0 Session 7 Slide 1 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Before troubleshooting power supplies, you need to
Troubleshoot Power Supplies
understand the following:
Common power problems
Common power supply issues
Ver. 1.0 Session 7 Slide 2 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Following are the various common power problems:
Common Power Problems
Line noise
Power sag
Brownouts
Frequency variations
Overvoltage
Power failure
Ver. 1.0 Session 7 Slide 3 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Following are the various common power supply problems:
Common Power Supply Issues
Fan doesn’t work.
Computer won’t start.
Noise coming from power supply.
Ver. 1.0 Session 7 Slide 4 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
The Power Supply wire color conventions are:
Power Supply Wire Color Conventions
Yellow wire +12
Blue wire -12
Red wire +5
White wire -5
Motor +/-12
Circuitry +/-5
Ver. 1.0 Session 7 Slide 5 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
To test the Power Supply:
Testing Power Supply
Locate a spare Molex connector, and remove it from the
bundle if necessary so that
Measure the 5 volt output from the power supply using a
multimeter
Measure the 12 volt output from the power supply using a
multimeter
Ver. 1.0 Session 7 Slide 6 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Activity 7-4
Activity on
Troubleshooting Power
Supplies
Ver. 1.0 Session 7 Slide 7 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Before troubleshooting memory, you need to understand the
Troubleshoot Memory
following:
Error checking
Common memory issues
Ver. 1.0 Session 7 Slide 8 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Following are the error-checking mechanisms, which helps
Error Checking
save the data used in memory modules:
The Parity is an error correction method that is used for
electronic communications.
The Error Correction Code (ECC) is an error correction
method that uses several bits for error-checking.
Ver. 1.0 Session 7 Slide 9 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Following are the common memory issues:
Common Memory Issues
Computer crashes
Application data is corrupted.
Memory errors displayed
Computer seems to boot, but screen is blank
Computer won’t boot, and beep codes are heard
New memory not recognized by the system
Ver. 1.0 Session 7 Slide 10 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Some common steps to troubleshoot memory issues:
Troubleshooting Memory Issues
Perform a virus scan. Viruses can cause symptoms that mimic
those of a memory problem.
Verify that the correct memory modules were installed in the
system. Verify this with the system documentation.
Verify that the memory was installed and configured properly.
Try swapping the memory between slots.
Check for BIOS upgrades. If there are known problems, then a
fix has probably been issued.
Ver. 1.0 Session 7 Slide 11 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Following are the common CPUs issues:
Troubleshoot CPUs
Overheating
Chip creep
Failure
Ver. 1.0 Session 7 Slide 12 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
To troubleshoot Overheating problems with CPUs
Troubleshoot CPUs
Verify that the air vents in the computer chassis are not
blocked.
Move the system further from the wall if airflow is not
sufficient.
Use compressed air to remove dust and dirt from fan
components and the CPU heatsink.
Verify that the fan blades are turning freely; remove debris or
obstructions.
Make sure the heat sink is securely clipped to the CPU.
If a cooling component has failed, replace it.
Configure the processor to eliminate overclocking.
Ver. 1.0 Session 7 Slide 13 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
CPUs (To troubleshoot chip creep problems with CPUs
Troubleshoot contd.)
Reseat the processor
If a processor has failed, replace the processor
Ver. 1.0 Session 7 Slide 14 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Following are the common system board issues:
Troubleshoot System Boards
Computer viruses
Loose connections
Out-of-date BIOS
CMOS battery failure
Overheating
Electrical short-circuits
Physical damage
Ver. 1.0 Session 7 Slide 15 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
To troubleshoot system board problems:
Troubleshoot System Boards
If the computer displays error messages, research the
messages to determine a possible cause.
Eliminate problems with all other system components.
Perform a virus scan.
Reseat all components on the system board, including both
cables and connector pins.
Update the system BIOS.
Update device drivers.
Replace the CMOS battery.
Ver. 1.0 Session 7 Slide 16 of 17
CIonmsptaTlIliAngA +W Cinedrotiwficsa XtPio nP:r oAf eCsosmiopnraelh Uesnisnigv eA tAtpepnrdoeadc hIn stallation
for all 2006 Exam Objectives
Summary
In this session, you learned that:
There are various common power problems, such as line
noise, power sag, brownouts, and frequency variations.
Common power supply issues are fan doesn’t work, computer
won’t start and noise coming from power supply.
Parity and ECC are the error checking mechanism.
Computer crashes, memory errors display, and computer
seems to boot, but screen is blank are common memory
issues.
Overheating, chip creep, and failure are the common CPU
issues.
Computer viruses, loose connections, out-of-date BIOS, and
CMOS battery failure are the common system board issues.
Ver. 1.0 Session 7 Slide 17 of 17
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