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Chapter 4 Objectives

§4.1 Explain the purpose of preventive maintenance
§4.2 Identify the steps of the troubleshooting process

The Purpose of Preventive Maintenance

§Reduce the like lihood of hardware or software problems by systematically and periodically checking hardware and software to ensure proper operation.
§Preventive Maintenance can be divided in:
•Hardware maintenance
•Software maintenance
§Benefits of preventive maintenance are:
•Reduced computer down time and repair costs.
•Increased data protection
•Extended life of the components
•Increased equipment stability

The Troubleshooting Process

§Follow an organized and logical procedure.
§Eliminate variables one at a time.
§Troubleshooting is a skill that is refined over time.
§The first and last steps involve effectively communicating with the customer.
Data Protection

Before troubleshooting problems, always follow the necessary precautions to protect data on a computer.
If you are unsure that a backup has been done, do not attempt any troubleshooting activities until you check with the customer:
•Date of the last backup
•Contents of the backup
•Data integrity of the backup
•Availability of all backup media for data restore

If no backup can be created, ask customer to sign a release form

TROUBLESHOOTING PROCESS STEPS

STEP 1 - IDENTIFY THE PROBLEM

During the troubleshooting process, gather as much information from the customer as possible, but always respectfully.
Use the following strategy during this step:
1.Start by using open-ended questions to obtain general information.
2.Continue using closed-ended (yes/no) questions to get relevant information.
3.Then document the responses in the work order and in the repair journal.
4.And last, verify the customer’s description by gathering data from the computer by using applications such as:
•Event Viewer
•Device Manager
•Beep Codes
•BIOS Information
•Diagnostic Tools

STEP 2 - ESTABLISH A THEORY OF PROBABLE CAUSES

Crete a list of the most common reasons why the error would occur.
List the easiest or most obvious causes at the top with the more complex causes at the bottom.

STEP 3 – DETERMINE AN EXACT CAUSE

Determine the exact cause by testing the theories of probable causes one at a time, starting with the quickest and easiest.
After identifying an exact cause of the problem, determine the steps to resolve the problem.
If the exact cause of the problem has not been determined after you have tested all your theories, establish a new theory of probable causes and test it

STEP 4 – IMPLEMENT THE SOLUTION

Sometimes quick procedures can determine the exact cause of the problem or even correct the problem. If it does, you can go to step 5.
If a quick procedure does not correct the problem, you might need to research the problem further to establish the exact cause.
Divide larger problems into smaller problems that can be analyzed and solved individually.

STEP 5 – VERIFY SOLUTION AND FULL SYSTEM FUNCTIONALITY

Verify full system functionality and implement any preventive measures if needed.
Ensures that you have not created another problem while repairing the computer.

STEP 6 – DOCUMENT FINDINGS

Discuss the solution with the customer.
Have the customer confirm that the problem has been solved.
Document the process:
•Problem description
•Steps to resolve the problem
•Components used in the repair

CHAPTER 4 SUMMARY

§Regular preventive maintenance reduces hardware and software problems.
§Before beginning any repair, back up the data on a computer.
§The troubleshooting process is a guideline to help you solve computer problems in an efficient manner.
§Document everything that you try, even if it fails. The documentation that you create will become a useful resource for you and a other technicians