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Part 17
POWER ON/OFF & BRIGHTNESS CONTROL
Touch Open Cover
A gentle tap on the touch
open cover at left side of the main
unit will open the cover and show the
power switch, brightness adjust push
button switches and a double deck
USB connector. Each single press on
the + or – button changes the LCD panel display brightness by a small amount.
When you press and hold the button the change will keep on until release or
extreme condition matched. It is preferable to keep this cover closed in daily
operation. The LCD brightness can also be controlled through software setting.
There must always be at least 10 seconds waiting before switching on
again once the system is powered off successfully.
Power Indicator
There is an power indicator LED module serving for several purposes
under the logo at center of lower rim of LCD panel. The relationship between
the indicator status and other conditions is summarized in following table:
Indicator Status
System
Status
External
Power
UPS Battery Powering Up
Off Off Off Not present Not possible
Off Off Off Present Not allowed
Green Off On No influence Allowed
Blue On On No influence Not required
Blue/flash On Off Activated Not required
Green/rapid flash On Off
Running at
low capacity
Not required
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
w/ Gen 5 base w/ Gen 6 base