PC Board Quick References
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5
Motion 4000
On Board Diagnostics
Two LEDs provide diagnostic information: The ON LED (green) and the FLT LED (red).
ON LED
The ON LED reflects power/communications status.
• ON: Serial hall call bus to Group/Car OK
• OFF: Board is not receiving power or has no software loaded.
• Blinking: Communications error - more than ten seconds have passed without a message
from the dispatcher.
(FLT) FAULT LED
The FLT LED reflects the status of the analog outputs.
• ON steady: Internal fault -
•Replace board if problem persists
• OFF: No Errors detected.
• Blinking: Output overload or disconnection. Pressing the Reset button on the SC-3HN
board will clear a blinking Fault LED.
• Overload: Excessive current draw. Resets when current draw is corrected and call but-
ton is pressed again.
• Not Connected: The output is on (button pressed) but nothing is connected to the UL-
or DL- output. Resets when the lamp is connected and the call button is pressed again.
• Output Shorted: If short is very quick, the LED will flash. Pressing the call button for a
few moments will cause the board to reboot. Resets when the short is removed and the
call button is pressed again.
Please refer to the Motion Group Manual, 42-02-G006, for configuration information relating
to group hall calls.
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