Maintenance & Service Guide
Presario 5800 Series Personal Computers
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Product Description
Power Management Features
Compaq Presario 5800 Series Personal
Computers use ACPI (Advanced Configuration and Power Interface) for system power
management. ACPI is an open industry specification that provides reliable power management
through improved hardware and operating system coordination.
The following is a list of the power
management features:
Power Status
Lights. You can quickly tell the sleep condition of the system by glancing at the
Power Status Lights on the unit or keyboard.
Automatic
Sleep. In Windows 98, there are different Power Schemes under which the system
goes into Sleep mode automatically when it times out. The optional settings for Windows 98
are Home/Office Desk, Portable/Laptop and Always
On. The system supports different levels of power management for varying patterns
of computer usage.
Default and
Adjustable timeout settings. The default setting for Sleep timeout is 30 minutes.
The Sleep timeout value can be set in the Control Panel by clicking the Power
Management icon. At the Properties screen, click System
Standby, Turn off Monitor, and Turn off Hard Disk
to set the length of time before the system goes to sleep.
Manual Sleep.
To manually put your computer into sleep mode in the Windows 98 desktop, press the Sleep
button (on the keyboard). The power status light on the CPU will light to show that Sleep
mode is activated.
Other manual
standby options. Another way to put your computer into sleep mode manually under
Windows 98 is to select Start, then Shutdown. Select Standby
from the list of choices to put the system into Sleep mode. The system can then be turned
off or left in Sleep. When the Sleep button is pressed, the system returns to the previous
Windows 98 Desktop state.
Wake up
events. Events that bring a system back to the working state include:
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Power management can be defined by
three distinct power states in which the computer operates: On, Off, and Sleep. The
following table describes the power states and lists the power consumption of each state:
Power Management States |
Energy State |
Description |
Power Consumption |
On |
Power is available to
the system. The AC cable is connected, and the power status light is green. |
90 Watts avg., 110 Watts
max |
Off |
Power is not available
to the system and the AC cable is disconnected. The power status light is not lit. |
0 Watts |
Soft Off |
Power is available to
the system, the AC cable is connected, and the power LED is off. |
1-2 Watts |
Sleep |
Power is available to
the system, the AC cable is connected, and the computer is in a low power/standby mode.
The power status light is amber. |
27 Watts |
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