Lab – Use a Multimeter and a Power Supply Tester (Answers Version)
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In this lab, you will learn how to use and handle a multimeter and a power supply tester.
Note: The multimeter is a sensitive piece of electronic test equipment. Do not drop it or handle it carelessly. Be careful not to accidentally nick or cut the red or black wires or leads, called probes. Because it is possible to check high voltages, take extra care to avoid electrical shock.
Questions:
What is the model of the multimeter?
Type your answers here.
Answer may vary.
What action must be taken to turn the meter on?
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Turn switch to a setting. Answer may vary.
Questions:
How many different switch positions does the multimeter have?
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Answer may vary.
What are they?
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Voltage, current, resistance, etc. Answer may vary.
Question:
What symbol is shown for this?
Type your answers here.
DCV
Question:
What is shown on the display?
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Answers may vary but the number should reflect the voltage of the battery. For example, a 1.5 V battery should display a number such as 1.47 V or 1.52 V.
Questions:
Name one thing you should not do when using a multimeter.
Type your answers here.
Plug the multimeter probes in a wall outlet. Answers may vary.
Name one important function of a multimeter.
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A multimeter measures whether voltage is passing through or getting to a component. Answers may vary.
Question:
Why is a digital multimeter an important piece of equipment for a technician? Explain your answer.
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Answers may vary.
Complete only the steps for the connectors supported by the power supply tester that you are using.
Many power supply testers have connector ports to test the following power supply connectors:
Question:
Which connectors does the power supply tester you are using have?
Type your answers here.
Answer may vary, see list above.
Complete the following steps for the connectors supported by the power supply tester that you are using.
If the power supply is working, LEDs will illuminate and you might hear a beep. If the LED lights do not illuminate, it is possible the power supply could be damaged or the motherboard connector has failed. In this instance, you must check all connections, ensure the power supply switch (if available) is set to ON (or 1) and try again. If the LEDs still do not illuminate, consult your Answers.
Possible LED lights include +5 V, -5 V, +12 V, +5 VSB, PG, -12 V, and +3.3 V.
Question:
Which LED lights are illuminated?
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Answer may vary but may include: +5 V, -5 V, +12 V, +5 VSB, PG, -12 V, +3.3 V.
Plug the 4-pin Molex connector into the tester. The LED illuminates on +12 V and +5 V. (If the power output fails, the LEDs will not illuminate.)
Question:
Which LED lights are illuminated?
Type your answers here.
+5 V, +12 V
Plug the 6-pin PCI-E connector into the tester. The LED will illuminate on +12 V. (If the power output fails, the LED will not illuminate.)
Question:
Does the LED light illuminate?
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Answer may vary.
Plug the 5-pin SATA connector into the tester. The LED will illuminate on +12 V, +5 V, and +3.3 V. (If the power output fails, the LEDs will not illuminate.)
Question:
Which LED lights are illuminated?
Type your answers here.
+5 V, +12 V, +3.3 V.
Plug the 4-pin Berg connector into the tester. The LED will illuminate on +12 V and +5 V. (If the power output fails, the LEDs will not illuminate.)
Question:
Which LED lights are illuminated?
Type your answers here.
+5 V, +12 V
Question:
Which LED lights are illuminated?
Type your answers here.
+12 V
Question:
Why is a power supply tester an important piece of equipment for a technician? Explain your answer.
Type your answers here.
Answers may vary.
End of Document