Force Computers SPARC CPU-54, Справочное руководство

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xxii SPARC/CPU-54
Installation
Electrostatic discharge and incorrect board installation and removal can
damage circuits or shorten their life. Therefore:
• Before installing or removing the board, read the “Action Plan” sec-
tion page 2-3.
• Before touching boards or electronic components, make sure that you
are working in an ESD-safe environment.
• When plugging the board in or removing it, do not press on the front
panel but use the handles.
• Before installing or removing an additional device or module, read
the respective documentation.
• Make sure that the board is connected to the VME backplane via all
assembled connectors and that power is available on all power pins.
Power Up
If an unformatted floppy disk resides in a floppy drive connected to the
SPARC/CPU-54 during power up, the SPARC/CPU-54 does not boot and
the OpenBoot prompt does not appear. Therefore, never boot the
SPARC/CPU-54 with an unformatted floppy disk residing in a floppy
drive connected to the SPARC/CPU-54.
Operation
While operating the board ensure that the environmental and power
requirements are met.
Do not operate the SPARC/CPU-54 outside the specified environmental
limits. High humidity and condensation may cause short circuits. Make
sure the product is completely dry and there is no moisture on any sur-
face before applying power. Do not operate the product below 0°C.
When operating the board in areas of electromagnetic radiation ensure
that the board is bolted on the VME system and the system is shielded by
enclosure.
Make sure that contacts and cables of the board cannot be touched while
the board is operating.
The switch settings have to be checked and changed before the board
installation. Do not set/reset the switches during operation. Otherwise,
the board is damaged.