PowerBook G3 Series: Energy Saver Control Panel

How does the Energy Saver control panel work on the PowerBook G3 Series computer?
PowerBook G3 Series (M4753) computer has the Energy Saver control panel, which is a replacement for the PowerBook Settings control panel from older PowerBook products. It now has a similar look-and-feel to the Energy Saver control panel used in desktop Power Macintosh computers. Here are some of the changes that have been made.

Idle and Sleep Settings


This screen allows you to set a preconfigured time and date when the PowerBook should either wake up or sleep.
Advanced Settings



The advanced settings contain many of the new features of the new Energy Saver control panel.

Under the Network Connections settings, there are the same features that were available under AutoRemounter. That is, the ability to reestablish network connections with mounted servers after coming out of sleep mode.In the Additional Power Savings section, there are options to allow processor cycling which will slow down the processor Megahertz when its not being used or when the PowerBook detects there has not been any mouse or keyboard activity for a period of time. This feature works in the same manner as previous PowerBooks.

Turning off the display instead of dimming it allows for greater power savings when using a battery.

Turning off power to inactive PC cards will cut the power completely to PC cards that are installed. Many PC cards will draw power even when they are not being used. Just having some of these cards inserted into the PowerBook will cause them to be powered. By checking this feature, the power can be cut off to those cards that are inserted. This may save battery power with some PC cards but not not all cards may be able to use this feature.

Reduce processor speed

This selection is new to the PowerPC G3 processors. When this option is selected, the processor drops down from its original speed to approximately 25 MHz. This allows for some battery savings as the processor is not constantly using a higher speed.

The PowerBook does not need to be restarted for this feature to take effect. The setting will become active when the Energy Saver control panel is closed.
Note: Macintosh PowerBook G3 Series computers should not be confused with Macintosh PowerBook G3 computers. Though the names are similar, there are significant differences. For more information differentiating between the computers, read Tech Info Library article 24604: "PowerBook G3, G3 Series: Identifying Different Versions"
Published Date: Feb 18, 2012