What Precautionary Messages Indicate; How Commands, Parameters, And Responses Are Represented - Northern Telecom DMS-100 Series Maintenance Manual

What precautionary messages indicate

In this document, caution, danger and warning messages indicate potential
risks, as identified in the following chart.
Message
CAUTION
DANGER
WARNING
Examples of the precautionary messages follow.

How commands, parameters, and responses are represented

In this document, commands, parameters, and responses are represented
according to the following conventions.
Significance
Possibility of service interruption or degradation
Possibility of personal injury
Possibility of equipment damage
CAUTION
Calls are dropped when line group controller is busied.
Manually removing the line group controller from service
removes all its subtending peripheral modules from service. All
calls in progress are dropped.
DANGER
Risk of electrocution
The inverter contains high voltage lines. Do not open the front
panel of the inverter unless fuses F1, F2, and F3 have been
removed first. Until these fuses are removed, the high voltage
lines inside the inverter are active, and you risk being
electrocuted.
WARNING
Backplane connector pins may become damaged.
Use light thumb pressure to align the card with the connectors.
Next use the levers to seat the card into the connectors. Failure
to align the card first may result in bending of backplane
connector pins.
DPP Recovery and Routine Maintenance Guide BCS35 and up
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