Rosewill Computer Case 422 Technické informace stáhnout pdf (Strana 99)

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Chapter 4 • Disassembly and Power

2. Work in teams to decide the best way to inform a customer about the differences between

a line conditioner and a UPS. Present your description to the class as if you were talking

to the customer. Each team member must contribute. Each classmate votes for the best

team explanation.

Critical Thinking Skills

Objective: To analyze and evaluate information as well as apply learned information to new

or different situations

Activities:

1. Locate a computer on the Internet that lists each device that is installed and the type of

motherboard, integrated ports, and so on. Then locate a power supply calculator. Find a

replacement power supply, based on the calculations performed. Write the details of what

you looked for in the replacement power supply, the power supply, vendor, number and

type of connectors, and cost.

2. For one of the computers in the classroom, locate an appropriate UPS that can provide

power for 10 minutes. Write the details of your findings in a report.

A+ Certification Exam Tips

✓ Review the chapter summary. Quite a few questions are about preventive mainte-

nance procedures. Don’t forget that other chapters have preventive maintenance

tips, too, including the chapters on storage devices, multimedia devices, and other

peripherals chapters.

✓ Power down a computer, remove the power cord/power brick/battery, and allow

a laser printer to cool before performing maintenance.

✓ Know what the +5 and +12 volts are used for in a computer.

✓ Review a couple of videos on laptop disassembly. Know where the common

parts, including the following, are located on different vendors’ products: memory,

wireless antennas, mini PCI/PCIe adapters, DC power jack, and speakers.

✓ Know what tools are commonly used: flat-tip/Phillips screwdrivers, #0 Phillips

screwdriver for laptop and mobile device screws, antistatic wrist strap (don’t use

in a CRT monitor or inside a power supply).

✓ Know all about static electricity, RFI, and EMI and how to prevent them.

✓ Know the purpose of various power protection devices: surge protector, line

conditioner, SPS, UPS, and modem isolator.

✓ Know what type of fire extinguishers are used with electronic devices.

✓ Be able to identify all motherboard, PCIe adapter, and power supply power con-

nectors.

✓ The following communication and professionalism skills are part of the 220-801

exam: Provide proper documentation on the services provided.

✓ Be familiar with all the power options that can be set on a desktop and a mobile

device.

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Rosewill Computer Case 422 Technické informace Strana 99