EVOC NPC-8208, Руководство пользователя

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Appendix
· 48 · NPC-8208
EFI BIOS. During motherboard Power
On Self Test (POST),
“beep-beep-beep-beep-beep” five beeps
can be heard.
The motherboard or complete PC is
not connected to PS/2 or USB
keyboard, and keyboard needs to be
connected properly.
Redundant power supply equipped with
the complete PC. After the PC is powered
on, the PC power supply gives off
piercing alarms.
The redundant power supply is not
connected to two AC plugs. The PC
should be powered off, and connect
the two AC plugs.
10.3 ESD Guideline
Definition of ESD
All the electronic modules are equipped with large-scale integrated IC or assemblies.
Due to their own design, these electronic components are extremely sensitive to
over-voltage, so they are also extremely sensitive to any ESD.
ESD-sensitive assemblies/modules are usually called ESD devices. It is also the
internationally universal abbreviation for this type of devices.
The following sign can be used to identify ESD module:
Caution
ESD device may be damaged by any voltage which is much lower than ca
by human. If the component of the device you contact does not dissipate
electrostatic charges in your body, a static voltage will be generated. ESD current
may lead to potential problem of the module, or damage to the mo
n be felt
dule which is not
t but may cause fault during operation. serious for the momen