Appendix
W15 SERIES
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11.2 Common Alarm Information Analysis and Solution
Alarm Information
Meaning and Solution
EFI BIOS product boot-up screen
indicates yellow alarm information:
“Warning system time is invalid, please
set it to right”
Motherboard CMOS time setup error
needs to be corrected.
After the motherboard is booted up, the
screen indicates: “Reboot and Select
proper Boot device or Insert Boot Media
in selected Boot device and press a key”
Current disk cannot boot, recheck the
system HDD connection cables, or
use optical drive for reinstallation of
operating system.
Award BIOS motherboard, during
boot-up POST, the screen indicates error
information “Keyboard error or no
keyboard present”
The motherboard or complete PC is
not connected to PS/2 or USB
keyboard, and the keyboard needs to
be correctly connected.
During EFI BIOS motherboard boot-up
POST, “Beep, beep, beep, beep, beep” 5
beeping sounds can be heard.
The motherboard or complete PC is
not connected to PS/2 or USB
keyboard, and the keyboard needs to
be correctly connected.
If the complete PC is equipped with
redundant power supply. After it is
booted, the PC power supply gives a
piercing alarm sound.
The redundant power supply is not
connected with two AC plugs. Power
off the PC and connect the two AC
plugs.
11.3 ESD Guideline
Definition of ESD:
All the electronic modules are equipped with large-scale integrated ICs or assemblies.
Due to their own design, these electronic components are extremely sensitive to
over-voltage, therefore, they are extremely sensitive to any electrostatic discharge.
ESD-sensitive assemblies/modules are usually called ESD devices. This is also the
