GE L90 Instruction Manual page 644

TARGETS MENU
professional optical 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 of problem: 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.
• What to do: 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 can still be non-functional.
7
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CHAPTER 7: COMMANDS AND TARGETS
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL