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Document ID: YAST-3JRRJB |
TP 310,315 - Power Management Features
Applicable to: World-Wide
Power Management Features:
Two power management modes are provided by the computer to reduce power consumption and prolong battery power.
Standby Mode:
When in standby mode, the following occurs:
- The LCD backlight turns off.
- The hard disk motor stops.
Events that cause the computer to enter standby mode:
- Standby requested by the Fn key. (Fn+F7)
- The LCD is closed.
- The specified time (standby timer in the BIOS Utility) has elapsed from the last operation with the keyboard, mouse, hard disk drive, parallel connector, or diskette drive.
- The battery condition is low and hibernation is not enabled (when Sleep Manager is not installed and the hibernation file is not present or invalid). The battery power indicator blinks amber.
Events that cause the computer to exit standby mode:
- The LCD is opened.
- The ring indicator (RI) is signaled by a serial or PCMCIA device.
- Any key or pointing device operation.
Note:
If the computer enters standby mode and the computer is using a communication or I/O PC Card, the PC Card and application program remain active.
Hibernation Mode:
When in hibernation mode, the following occurs:
- The system status, RAM, VRAM, and setup data are stored on the hard disk.
- The system is powered off.
Events that cause the computer to enter hibernation mode:
- Hibernation requested by the Fn key. (Fn+F8)
- The specified time (hibernation timer in the BIOS Utility) has elapsed from the last operation with the keyboard, mouse, hard disk drive, parallel connector, or diskette drive.
- A critical low battery condition occurs and hibernation is enabled (when Sleep Manager is installed and the hibernation file is present and valid).
Note:
The computer cannot enter hibernation mode when a communication or I/O PC Card is being used by the computer.
Events that cause the computer to exit hibernation mode:
- The power-on switch is operated.
- When power is turned on, the hibernation history in the boot record on the hard disk is recognized and system status is restored from the hard disk to resume operation.
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Hint Category |
Hardware Maintenance Information | |
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Date Created |
07-07-97 | |
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Last Updated |
06-04-98 | |
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Revision Date |
03-04-99 | |
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Brand |
IBM ThinkPad | |
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Product Family |
ThinkPad 310, ThinkPad 315 | |
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Machine Type |
2600 | |
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Model |
Various | |
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Retain Tip (if applicable) |
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Reverse Doclinks |