Chapter 11: Understanding Safety Procedures

Question 1

Computers both ____ and _____ electricity

Answer 1

Use and Store

Question 2

Two elements of a workstation that should never be touched, what because the power they’re storing can kill you

Answer 2

CRT or LCD Monitors

Power Supplies

Question 3

Before opening a PC, always first _____

Answer 3

Ensure it’s turned off.

Leaving it plugged in is usually fine, and many times actually preferred because it grounds the equipment and can help prevent electrostatic discharge.

Question 4

You should turn off a computer whenever replacing parts, except when _____

Answer 4

You’re working with hot-swappable components

Question 5

If you have to open a monitor, you must first discharge the high-voltage charge on it by using a _____

Answer 5

high-voltage probe

Question 6

high-voltage probe

Answer 6

This probe has a very large needle, a gauge that indicates volts, and a wire with an alligator clip.

Question 7

How do you discharge a monitor with a high-voltage probe?

Answer 7

Attach the alligator clip to a ground (usually the round pin on the power cord). Slip the probe nee- dle underneath the high-voltage cup on the monitor. You will see the gauge spike to around 15,000 volts and slowly reduce to 0 (zero). When it reaches zero, you may remove the high- voltage probe and service the high-voltage components of the monitor.

Question 8

Safety requirements for printers

Answer 8

Do not turn toner upside down. It gets messy.

Don’t look into the laser of a laser printer

Don’t blow on the ink cartidge of an inkjet

Don’t burn yourslelf.

Question 9

Safety issues with keyboard / mice

Answer 9

You can trip on their cords

Spilling liquid on the keyboard can short it out.

Question 10

ESD

Answer 10

electrostatic discharge