Specifications

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3BUS 208 000 R1301228 Troubleshooting
ECF and ECS LEDs
These LEDs are located on the ECF and ECS boards in the Scanning Platform
electronics cabinet. Use the following table to assist you in troubleshooting. Refer
to Table 11-2 and Figure 10-17 on page 218.
Table 11-2 ECF/ECS LED Interpretation
LEDs DESCRIPTION
RTSA (green) The LED flashes when HDLC Port A has set its request
to send and is attempting to transmit data.
The intensity of the flashing depends on how much data
is being transmitted.
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 SMI.
If the LED is flashing check the service console.
If the LED is off and the RUN light is flashing, conditions
are normal.
If there are no LEDs lit, check to make certain there is
power to the board.
RUN (green) This LED is driven by the data strobe and indicates the
level of 68332 external bus activity.
The intensity of the LED varies from dim to bright
depending upon bus activity.
RTSB (green) This LED is not currently being used and should be off.