Safety Precautions - HP AdvanceNet 30244M Installation And Service Manual

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This section contains general servicing information for the HP 30244M Intelligent Network Processor
(INP). This information includes safety precautions, repair philosophy, maintenance aids, use of the
self -test capability, troubleshooting, and field -level repair.
SAFETY PRECAUTIONS
WARNING
Whenever the INP printed circuit assembly (PCA) is being installed or
removed, ensure that the computer system's power is turned off by
disconnecting its power cord.
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CAUTION
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Whenever the INP PCA is being connected or disconnected to a modem (by
attaching or removing the INP-to-modem jnterconnecting cable), ensure
that the key-operated processor power switch is set to 0 and that the
modern power is also turned off.
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CAUTION
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Be particularly cautious when selecting the routing for the longer lengths
of the interconnecting data cables. Do NOT run these cables outdoors!
Lightning induced transients can have a devastating effect on data
communication links; and a mote direct lightning strike can, of course, be
a very real safety hazard to personnel as well as to the equipment. Indoor
routing must be planned to avoid sources of electrical
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no ise ll
,
such as arc
welders.
Failure to observe these precautions could result in damage to the components of the computer system, the
INP, and/or the modem.
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