Rosewill Computer Case 422 Información técnica Pagina 64
- Pagina / 150
- Tabla de contenidos
- SOLUCIÓN DE PROBLEMAS
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
ACPI (Advanced Configuration and Power Interface)
147
Disassembly
and Power
4
Tech
Tip
All power supplies are not created equal
A technician needs to replace a power supply with one that provides an equal or greater
amount of power. Search the Internet for power supply reviews. A general rule of thumb is
that if two power supplies are equal in wattage, the heavier one is better because it uses a
bigger transformer, bigger heat sinks, and more quality components.
ACPI (Advanced Configuration and
Power Interface)
Today’s computer user needs to leave a computer on for extended periods of time in order to
receive faxes, run computer maintenance tasks, automatically answer phone calls, and down-
load software upgrades and patches. Network managers want control of computers so they can
push out software upgrades, perform backups, download software upgrades and patches, and
perform tests. Laptop users have always been plagued by power management problems, such as
short battery life, inconsistent handling of screen blanking, and screen blanking in the middle
of presentations. Such problems occurred because originally the BIOS controlled power. Power
management has changed.
ACPI (Advanced Configuration and Power Interface) gives the BIOS and operating system
control over various devices’ power and modes of operation, as shown in Figure 4.28.
An act like this...
ACPI (Advanced Configuration and Power Interface)
might bring to life the...
Re-access
the computer
After-hours
phone call
IT
after-hours
update
Figure 4.28 ACPI actions
With ACPI, the user can control how the power switch operates and when power to specific
devices, such as the hard drive and monitor, is lowered. For example, the Instant On/Off BIOS
setting can control how long the power switch is held in before the power supply turns on or
off. Case temperatures, CPU temperatures, and CPU fans can be monitored. The power supply
can be adjusted for power requirements. The CPU clock can be throttled or slowed down to
keep the temperature lower and prolong the life of the CPU and reduce power requirements
especially in portable devices when activity is low or nonexistent. ACPI has various operating
states, as shown in Table 4.3.
- Guide to PCs 2
- Complete CompTIA 3
- Contents at a Glance 4
- Contents 10
- Contents 11
- About the Author 19
- Dedication 20
- Acknowledgments 20
- We Want to Hear from You! 21
- Reader Services 21
- It Pays to Get Certified 22
- CompTIA Career Pathway 23
- Steps to Certication 23
- Content Seal of Quality 24
- Why CompTIA? 24
- Introduction 25
- Organization of the Text 26
- Features of This Book 27
- IT work 31
- CompTIA A+ Exam Objectives 32
- CompTIA Exam Objectives 33
- Disassembly 36
- Disassembly Overview 37
- Electrostatic Discharge (ESD) 37
- Opening the Case 41
- Cables and Connectors 41
- Snug connections 43
- Storage Devices 45
- Motherboards 46
- Mobile Device Issues 47
- Reassembly 49
- Preventive Maintenance 49
- Basic Electronics Overview 51
- Electronics Terms 51
- Good connection Broken wire 53
- Power Supply Overview 54
- Power Supply Form Factors 55
- Tech Tip 56
- Purposes of a Power Supply 58
- Power Supply Voltages 60
- Mobile Device Power 61
- Keep Li-ion batteries cool 63
- Power Interface) 64
- Windows power management 65
- Watch the wattage 68
- Solving Power Supply Problems 70
- Adverse Power Conditions 71
- Adverse Power Protection 72
- Surge Protectors 72
- Line Conditioners 74
- Figure 4.32 Line conditioner 75
- Figure 4.33 Sine wave and 75
- Standby Power Supply (SPS) 77
- Electrical Fires 78
- Computer Disposal/Recycling 79
- Chapter Summary 81
- Review Questions 82
- Exercises 85
- External Cables 86
- Computer Case Removal 86
- Adapter Placement 86
- Motherboard 88
- Lab 4.3 Amps and Wattage 89
- Lab 4.4 Continuity Check 89
- Lab 4.5 Pin-Out Diagramming 90
- Lab 4.6 Fuse Check 91
- Lab 4.7 Using a Multimeter 91
- Figure 4.38 AC outlet 93
- GND to hot 120VAC 93
- GND to neutral 0VAC 93
- Hot to neutral 120VAC 93
- +5 volts 95
- +12 volts 95
- Activities 97
- Critical Thinking Skills 99
- A+ Certification Exam Tips 99
- Complete PC Restore tool 107
- FireWire 114
- IRQs (Interrupt Requests) 120
- PBs (petabytes) 129
- Setup program 136
- SSDs (solid state drives) 138
- SSDs (solid state drives) 139
- TBs (terabytes) 140
- troubleshooting 143
- video 145
- Windows 147
- Windows Vista 148
- Windows Vista 149
© 2020, manymanuals.es. Todos los derechos reservados | 0.035 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales