JHL90 Service Manual
4. Thermal management
Please refer to Keyboard BIOS specification.
5. Power Management for ACPI mode
5.1 Introduction
The notebook supports ACPI. The system will dynamically switch to ACPI mode
for configuration and power management when an ACPI OS is loaded.
When ACPI is not loaded and enabled, the power management function will be
disabled.
5.2 System Time-outs
If the system is running in ACPI mode, system Time-outs is handled by the
operating system. BIOS time-outs are disabled. System time-outs are set using
the control panel power applet.
5.3 System Power Management
The overall system can be in one of the system power states as described below:
ACPI mode Power Management
Mech. Off (G3) All devices in the system are turned off completely.
Soft Off (G2/S5) OS initiated shutdown. All devices in the system are
turned off completely.
Working (G0/S0) Individual devices such as the CPU and hard disk
may be power managed in this state.
S3 Sleeping State CPU set power down
VGA Suspend
New Card Suspend
Audio Suspend
Hard Disk Power Down
ODD Power Down
Super I/O Power Down
S4 Sleeping State System Saves all system states and data onto disk
prior to power off the whole system.
5.4 Device Power Management
Under ACPI mode, the device specific power management supported by this
notebook includes the CPU throttling, monitor power management and the hard
disk.
5.4.1 CPU power management
• ACPI mode
2-7
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