Power On Led - Toshiba Equium 5160D Series Preliminary Maintenance Manual

Sleep/Resume
When Advanced Power Management (APM) is activated in the system BIOS and the
Operating System's APM driver is loaded, Sleep mode (Standby) can be entered in one of
three ways: an optional front panel "Sleep/Resume" button, a user defined keyboard hot key,
or prolonged system inactivity. The Sleep/Resume button is supported by a 2-pin header
located on the front panel I/O connector. Closing the "Sleep" switch generates an SMI
(System Management Interrupt) to the processor which immediately goes into System
Management Mode (SMM).
The front panel "Sleep mode" switch must be a momentary two pin SPST type that is
normally open. The function of the Sleep/Resume button can also be achieved by using a
keyboard hot-key sequence, or by a time-out of the system inactivity timer. Both the
keyboard hot key and the inactivity timer are programmable in the BIOS Setup (timer is set to
10 minutes by default). To reactivate the system, or "Resume", the user must simply press the
sleep/resume button again, or use the keyboard or PS/2 mouse. Mouse activity only "wakes
up" the system if a mouse driver is loaded. While the system is in Standby or "sleep" mode, it
is fully capable of responding to and servicing external interrupts (such as in-coming FAX)
even though the monitor only turns on if a user interrupt (keyboard/mouse) occurs as
mentioned above.
Infrared Connector
Serial port 2 can be configured to support an IrDA module with a 5 pin header connector.
Once configured for IrDA, the user can transfer files to or from portable devices such as
laptops, PDAs and printers using application software such as LapLink. The IrDA
specification provides for data transfers at 115 Kbps from a distance of 1 meter. Consumer
IR is also supported by the same connector.
Hard Drive LED
This 3-pin , keyed header can be connected to a front panel LED to indicate when hard drive
activity is taking place. When hard drive activity is happening, the HDACTIVE pin
(J2A1-15) goes low.
Power-ON LED
This 2-pin header can be connected to a front panel LED to indicate when power is applied to
the system board. When the system board is powered up, power is applied to the PWRDRV
pin (J2A1 -20) to light the front panel LED.
Reset
This 2-pin header can be connected to a momentary SPST type switch that is normally open.
When the switch is closed, the system performs a hard reset and runs POST.
TM
Equium Series Maintenance Manual------------------------------------------------------------ B-4