3.8.3.2 Managing Power Usage
+------------------------------------------------------------------------+
¦ Key¦ Purpose ¦ Option ¦
+----+----------------------+--------------------------------------------¦
¦ 5 ¦ Internal Device ¦ ¦
¦ ¦ Power Off Time ¦ Display off after: ¦
¦ ¦ ¦ ¦
¦ ¦ Automatically turns ¦ 10 (1 through 20) mins ¦
¦ ¦ off internal devices ¦ ¦
¦ ¦ and system power if ¦ ¦
¦ ¦ no keyboard input or ¦ ¦
¦ ¦ other device ¦ ¦
¦ ¦ activity occurs in a ¦ Hard disk off after: ¦
¦ ¦ specified time. ¦ ¦
¦ ¦ ¦ 5 (1 through 15) mins ¦
¦ ¦ Hard disk drive is ¦ ¦
¦ ¦ turned on when the ¦ ¦
¦ ¦ system attempts to ¦ ¦
¦ ¦ read or write to the ¦ ¦
¦ ¦ hard disk. ¦ System power off after: ¦
¦ ¦ ¦ ¦
¦ ¦ Pressing any key ¦ 20 (1 through 20) mins ¦
¦ ¦ causes the display ¦ ¦
¦ ¦ to turn on again; ¦ ¦
¦ ¦ however, that ¦ ¦
¦ ¦ keystroke is ¦ Note: If 0 is specified, no automatic ¦
¦ ¦ accepted by the ¦ power-off is assumed. ¦
¦ ¦ system as input. ¦ ¦
¦ ¦ ¦ ¦
¦ ¦ System power is ¦ ¦
¦ ¦ resumed when, for ¦ ¦
¦ ¦ example, the display ¦ ¦
¦ ¦ is lowered and ¦ ¦
¦ ¦ raised or any other ¦ ¦
¦ ¦ condition occurs. ¦ ¦
¦ ¦ See page 3.5.2. ¦ ¦
¦ ¦ ¦ ¦
¦ ¦ Other internal ¦ ¦
¦ ¦ devices such as ¦ ¦
¦ ¦ diskette drive ¦ ¦
¦ ¦ automatically turn ¦ ¦
¦ ¦ off when not in use. ¦ ¦
¦ ¦ No action is ¦ ¦
¦ ¦ required by you to ¦ ¦
¦ ¦ turn these devices ¦ ¦
¦ ¦ on or off. ¦ ¦
+----+----------------------+--------------------------------------------¦
¦ 6 ¦ System Speed ¦ ¦
¦ ¦ ¦ Auto: ¦
¦ ¦ Minimizes power ¦ ¦
¦ ¦ usage by changing ¦ High Performance ¦
¦ ¦ the processing ¦ Long Battery Life ¦
¦ ¦ speed. ¦ ¦
¦ ¦ ¦ ¦
¦ ¦ You can specify two ¦ ¦
¦ ¦ values, one for the ¦ Note: If you select High Performance, use ¦
¦ ¦ A (automatic) mode, ¦ of the AC Adapter is recommended. ¦
¦ ¦ the other for the M ¦ ¦
¦ ¦ (manual) mode. ¦ ¦
¦ ¦ ¦ ¦
¦ ¦ The value for the ¦ Manual: ¦
¦ ¦ Auto mode becomes ¦ ¦
¦ ¦ effective when the ¦ 20 MHz ¦
¦ ¦ economy switch is ¦ 10 MHz ¦
¦ ¦ set to A; the value ¦ 5 MHz ¦
¦ ¦ for the Manual mode ¦ ¦
¦ ¦ becomes effective ¦ ¦
¦ ¦ when the economy ¦ ¦
¦ ¦ switch is set to M. ¦ Note: It is recommended that 20 MHz be ¦
¦ ¦ ¦ specified if you use the serial ¦
¦ ¦ ¦ port at a line speed of above 9600 ¦
¦ ¦ ¦ bps. ¦
+------------------------------------------------------------------------¦
¦ Note: Default value is highlighted in the Option column. ¦
+------------------------------------------------------------------------¦
¦ 7 ¦ Power Control for ¦ ¦
¦ ¦ Communication ¦ Onboard Parallel power: ¦
¦ ¦ Devices ¦ ¦
¦ ¦ ¦ On ¦
¦ ¦ You can determine ¦ Off ¦
¦ ¦ whether power is ¦ ¦
¦ ¦ supplied to each ¦ ¦
¦ ¦ external device ¦ ¦
PS/2 Model L40 SX Quick Reference
Managing Power Usage
¦ Copyright IBM Corp. 1991
3.8.3.2 - 1
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