44. Troubleshooting Mobile Devices

Question 1

What takes the DC power of the laptop and boosts it to AC in order to run the backlight?

Answer 1

The inverter

Question 2

If the display is really dim on a laptop - what should you check first?

Answer 2

The function keys for controlling brightness

Question 3

Your user spilled coffee on their laptop and now keys are sticking badly, what can you to get them running right away if cleaning failed?

Answer 3

Use an external keyboard

Question 4

Why might the wireless on a mobile device be intermittent?

Answer 4

Interference in the RF

Question 5

What type of battery will build up memory and prevent the device from charging fully?

Answer 5

NiCad

Question 6

The cursor on a person’s laptop keeps moving around all on its own. What is the most likely problem?

Answer 6

TrackPad issues

Question 7

What are the four steps you should use when you are taking apart a laptop for repair and then fixing it?

Answer 7

Document and label cable and screw locations; organize parts; refer to manufacturer resources; use appropriate hand tools

Question 8

What is a common no display issue on a laptop that is very simple to fix?

Answer 8

The user has inadvertantly used the keyboard to dim the display all the way

Question 9

Name two reasons why wireless access may be intermittent on a mobile device that has a fully functional wireless card?

Answer 9

Interference, or out of range

Question 10

You have upgraded the wireless AP in your organization. Several of your users indicate that they cannot access or even see the wireless any more. What is the most likely problem?

Answer 10

They do not have wireless adapters that support the signal technology

Question 11

You are seeing a second “ghost” cursor on screen with your laptop. This is often the result of what hardware component?

Answer 11

The trackpad

Question 12

Your user is complaining about a mobile device that has an extremely short battery life. What are four things that could change this?

Answer 12

Brightness is constantly set too high, the wireless is constantly enabled, the location services are always set to on, there are background data services that are always on

Question 13

What are four steps of the disassembling process for laptops fir proper reassembly?

Answer 13

Document and label the cable and screw locations, organize your parts, refer to the manufacturer resources, use appropriate hand tools