Specifications

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3BUS 208 000 R1301230 Troubleshooting
Table 11-4 MPRC 086444-xxx LED Interpretation
LEDs Description
ERROR (red) This LED indicates status of local diagnostics; it is under
software control on a reset.
If the LED stays on after reset, replace the MPRC.
If the LED is flashing, check the service console.
If the LED is off and the RUN light is flashing, conditions
are normal.
If the LEDs are not lit, check to make certain there is power
to the board.
RUN (green) This LED is driven by “Transfer in Progress” and indicates
the level of 68040 external bus activity.
The intensity of the LED varies from dim to bright
depending upon bus activity.
NET TX_B (green) When lit, the Ethernet port on J2 (Port B) is transmitting
data.
NET TX_A (green) When lit, the Ethernet port on the ASPC Host Connector
(Port A) is transmitting data.
RTS 0 (green) HDLC Port 0 is transmitting to the sensor microcontrollers.
RTS 1 (green) When lit, HDLC Port 1 is transmitting to the sensor
microcontrollers.
RTS 2 (green) When lit, HDLC Port 2 is transmitting (unused in Scanning
Platform).
RTS 3 (green) When lit, HDLC Port 3 is transmitting (unused in Scanning
Platform).
RX TERMINAL
(green)
When the LED is lit or flashing, there is a physical
connection to the terminal.
When the LED is not lit, the physical connection to the
terminal is broken.
RX HOST (green) When the LED is lit or flashing, there is a physical
connection to the host.
When the LED is not lit, the physical connection to the host
is broken.