Lesson 7 Chapter 3 - Installing and Maintaining Power Supplies Flashcards
A typical PSU connects to the PC with ___ standard computer screws
4
It’s important to unplug the computer when working on it (the motherboard always has 5V)! But what is another alternative that the PSU gives you to unplugging it?
Use the On/Off switch on the back of the PSU
What is “shorting the pins”?
When you use a car key or screwdriver to touch the two pins intended for the PC’s power button in order to turn it on (if the header leads aren’t plugged in yet)
What is your first task when acquiring a new power supply?
Make sure it works! Connect the PSU to the motherboard and plug in any video cards’ power connectors to test the power and see if anything appears on the screen
What are 2 functions of the power supply fan?
cools the, provides a
- Cools the voltage regulator circuits in the power supply
- Provides constant flow of outside air throughout the case
Some PSU come with a built-in ____ to help regulate the airflow
built-in sensor that regulates the airflow in a PSU
What are 2 ways case fans are installed? What do they look like? (3 total)
snap, screw, enix
- Case fans are large, square fans
- Snap into special brackets on the case
- Or, screw directly to the case
What type of connectors do case fans come with? (2 types, one is easier)
- Molex
- Special 3-pronged power connectors that connect to the motherboard
How do you plug 3-pronged connectors into Molex connectors or vice versa?
With an adapter
Why should you keep the metal slot covers on the case installed? What does missing slot covers do to the PC? (2)
- Missing slot covers reduce the steady airflow in the case
- Can cause PC to overheat, and dust gets in the case
Where are the intake and exhaust fans typically located in the case? (2)
- Intake = bottom of the front of the case
- Exhaust = Near the top and rear of the case near PSU (hot air rises)
