15.
Suppose that you have a the maintenance package identifies several possible field replaceable units (FRUs) that will resolve the problem. What should you do after turning the power off?

16.
Most PCs give a single beep on bootup to indicate they are ok hardware wise. You boot your PC and don't get a beep. What should you check first?

18.
The mouse pointer moves erratically, what is the possible cause? The mouse

20.
Your customer tells you the print quality of their dot matrix printer is light then dark. Which of the following could cause the problem.

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