GE B30 UR Series Instruction Manual page 356

7.2 TARGETS 7 COMMANDS AND TARGETS
If this message appears, check the field unit actual values. An indication of equipment mismatch means that messages are
being received from a Brick, but there is a discrepancy between the settings and the actual Brick serial number, order code,
and/or core number. Check that the correct core on the correct Brick is patched through to the correct Process Card port,
and that the field unit settings are correct. An indication of communications loss means that no messages are being
received. Check that the patching is correct, and that the Brick has power. If that is not the problem, use a professional opti-
cal fiber connector cleaning kit to clean both sides of all optical fiber connections from the Process Card through to the
affected Brick. If the problem continues after cleaning, consult the factory.
Brick Trouble Minor Self-Test
Description: Brick internal self-testing has detected a trouble internal to the Brick.
Severity: This self-test error does not directly inhibit protection. However, some or all of the affected Brick inputs/outputs
may not be available to the UR-series device.
If this message appears, check the Brick environment for over/under temperatures and the voltage of its power source. If
the ambient temperature and supply voltage are within Brick specifications, consult the factory. Troubles resulting from a
Brick output failing to respond to an output command can only be detected while the command is active, and so in this case
the target is latched. A latched target can be unlatched by pressing the faceplate reset key if the command has ended,
however the output may still be non-functional.
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7-10 B30 Bus Differential System GE Multilin