Lenovo ThinkCentre M75e Hardware Maintenance Manual - Page 311
Power management, Advanced Configuration and Power Interface (ACPI) BIOS, Automatic Power-On features
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5. Move the jumper from the standard position (pin 1 and pin 2) to the maintenance position (pin 2 and pin 3). 6. Reinstall any parts and reconnect any cables that have been removed or disconnected. 7. Reinstall the computer cover and reconnect the power cords for the computer and monitor. For machine types 4162, 5041, 5044, 5051, 5053, 5055, 5057, 5059, 5061, 5063, and 5065, see "Completing the parts replacement" on page 98. For machine types 4163, 5042, 5046, 5052, 5054, 5056, 5058, 5060, 5062, 5064, and 5066, see "Completing the parts replacement" on page 132. 8. Turn on the computer and then insert the POST and BIOS update (flash update) disc into the optical drive. The recovery session begins. The recovery session will take two to three minutes. During this time, you will hear a series of beeps. 9. After the recovery session is completed, there will be no video, the series of beeps will end, and the system will automatically turn off. 10. Repeat step 1 through step 4. 11. Move the jumper back to the standard position (pin 1 and pin 2). 12. Reinstall any parts and reconnect any cables that have been removed or disconnected. 13. Reinstall the computer cover and reconnect power cords and all other external cables. For machine types 4162, 5041, 5044, 5051, 5053, 5055, 5057, 5059, 5061, 5063, and 5065, see "Completing the parts replacement" on page 98. For machine types 4163, 5042, 5046, 5052, 5054, 5056, 5058, 5060, 5062, 5064, and 5066, see "Completing the parts replacement" on page 132. 14. Turn on the computer and remove the disc from the optical drive. Power management Power management reduces the power consumption of certain components of the computer such as the system power supply, processor, hard disk drives, and some monitors. Advanced Configuration and Power Interface (ACPI) BIOS Being an ACPI BIOS system, the operating system is allowed to control the power management features of the computer and the setting for Advanced Power Management (APM) BIOS mode is ignored. Not all operating systems support ACPI BIOS mode. Automatic Power-On features The Automatic Power-On features within the Power Management menu allow you to enable and disable features that turn on the computer automatically. • RTC resume: You can specify a date and time at which the computer will be turned on automatically. This can be either a single event or a daily event. • Wake on LAN: If the computer has a properly configured token-ring or Ethernet LAN adapter card that is Wake on LAN-enabled and there is remote network management software, you can use the Wake on LAN feature. When you set Wake on LAN to Enabled, the computer will turn on when it receives a specific signal from another computer on the local area network (LAN). Chapter 11. Additional service information 305