General Rules; Precautions - NEC SP B-Series Service And Reference Manual

This section provides instructions for installing the following options:
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expansion boards
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memory upgrade
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data storage devices
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external options.
All options (except external options) require removal of the access cover.
Procedures for removing the cover are included in this section.

General Rules

Follow these general rules when installing system options.
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Turn off system power and unplug the power cable.
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Turn off and disconnect all peripherals.
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When handling boards or chips, touch the metal of the system unit to
discharge static.
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Do not disassemble parts other than those specified in the procedure.
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Use a Phillips-head screw driver, unless otherwise specified.
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Label any removed connectors. Note where the connector goes and in
what position it was installed.

Precautions

Take care when working inside the system and when handling computer
components. Avoid electric shock or personal injury by observing the following
warning.
Before removing the access cover, turn off the power and
unplug the system power cable. Power is removed only
when the power cable is unplugged.
Static electricity and improper installation procedures can damage computer
components. Protect computer components by following the safety instructions
in this section.
Electrostatic discharge can damage computer components.
Discharge static electricity by touching a metal object before
removing the access cover.
3-2 Option Installation
!
WARNING
! CAUTION