Part 12
Hardware Power Switch
The power switch located in the touch open cover of the main unit is a tactile
pushbutton switch. This switch controls the power on/off of the system. This
switch turns the system on when pushed only when external power is present.
This switch turns the system off when pushed again during power on status.
However, if the system hangs due to any reason such as software resource
conflict a simple push on the switch may fail to turn off the power. In this case,
please utilize the
forced power off feature
by pressing the switch and holding
for within 10 seconds. In case the turmoil is so vigorous that some hardware
registers may be confused causing trouble for system restart or even this forced
power off, please disconnect the UPS battery if installed and the AC power
supply for few minutes. This may reset all hardware registers.
This switch can also be programmed as an ON only switch. That means, if the
application program issues a command compliant with the XT series technical
manual, this switch will always turn the system on when activated, but will not
power off the system when pushed again (the forced power off feature will not
work in this mode). When using this feature, please make sure that the
software application has the ability to power off the machine. In preloaded
Windows, “Posiflex Power Switch Manager” in “Posiflex Tools” in the
Program Files helps managing these functions.
Software Support Features
The XT series provides a software power off command for application
program maneuvers. The XT also provides a specific means for the software to
detect if the system is working on external or UPS battery power. Due to this
feature, compatible software applications have the ability to change operating
conditions when running on standard/backup power. The software programmer
may take reference from the KS technical manual to apply such features.
Automatic Power on Control
The XT system may also turn on according to some preset conditions such as
Alarm Clock Wake Up or LAN Wake Up.
To utilize Alarm Clock Wake Up function, the user should enter the BIOS
setup by pressing “Del” key at system boot up, choose in “Power Management
Setup” and enable the “Resume by Alarm” for Alarm Clock Wake Up. Save
the configuration and exit the BIOS setup program. The Preset Power On
Control will then be ready. For LAN wakeup, the item “PCI Express PM
Function” must be enabled in “Power Management Setup” and an operating
caller system connected through LAN to the system is required. It also requires
a qualified networking technician to check the LAN chip ID of the system for
