Confidence Bangla Lecture Sheet For BCS.pdf

2.7. Think out a Line to Troubleshoot

 Every component of a PC is attached to one another. So a fault in one device implies a fault not only in that device, but also in the devices attached to it, and the devices attached to the devices attached to it. 

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For example, 

 A printer is attached with the printer cable. 

 The cable is attached with the printer port. 

 The printer port is attached with the motherboard. 

 The motherboard is attached with the software. So a problem in printing may be caused by a fault in any (or some) of the following: 

 The printer  The printer cable 

 The printer port  The motherboard 

 The printing software But not for a fault in the mouse. To troubleshoot the printing problem you have to do: 

 Separate each of the five components from the PC 

 Install each component in a well-running PC to check if it is faulty. Thus the faulty component is detected. 

 Try to remove the fault in the detected faulty component. 

 If you failed to remove the fault, replace the faulty component with a good one. 

2.8. Go to the Easiest Way First 

If you think that the trouble is in one of several components then check the easiest one first. For example, you have found that the display is not working properly. This may happen for the fault in one (or some) of several components: 

 The monitor 

 The cable 

 The video card 

 The motherboard. To detect the faulty component you have to replace each of the four components one by one. But which should be replaced first? The cable, because it is the easiest to replace.