NEC LC1400, Руководство по обслуживанию и справочник

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Upgrading Your System 4-3
General Information
This chapter contains procedures for disassembling and reassembling your
server system unit. For reassembling your server unit, follow the disassemble
procedure in reverse order.
When disassembling and reassembling your server system unit, follow these
general rules.
WARNING
The DC push-button on/off switch on the front panel does
not turn off the system AC power. Also, +5vdc is present on
the system board whenever the AC power cord is connected
between the system and an AC outlet. Before doing the
procedures in this manual, make sure that your system is
powered off and unplug the AC power cords from the back
of the chassis. Failure to disconnect power before opening
your system can result in personal injury and equipment
damage.
CAUTION
The server management logic on your system board
monitors and logs system voltage changes. When powering
down your system you may experience a 1–5 second delay
from the time you press the push-button power on/off switch
on the front panel and your system powering down. This is
normal system operation and is required by the server
management logic.
CAUTION
Operating your system with the side panels removed can
damage your system components. For proper cooling and
airflow, always replace the side panels before powering on
your system.
Note: :
Your system error log will be lost, if your system
ac power source is off or disconnected.
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When disassembling disconnect all options.
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When handling boards or chips, touch the system unit frame to release
static.
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Do not disassemble parts other than those specified in the procedure.
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All screws are Phillips-head, unless otherwise specified.