Digital Equipment RouteAbout Access EW, Installation Manual

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Problem-Solving Using the LEDs A-7
Symptom Probable Cause Corrective Action
Serial Port 1
(or 2) Activity
LED is off. There is low serial port
activity or no serial port
activity. Ensure that serial port activity is
present. If the Serial Port
Activity LED still fails to turn on,
then turn the unit off
momentarily by removing it from
the power supply. Check that
the Serial Port Activity LED
blinks momentarily during the
LED powerup self test.
If the Serial Port Activity LED
blinks momentarily, then the
Serial Port Activity LED portion
of testing has passed. If the
Serial Port Activity LED still fails
to turn on, then the RouteAbout
Access EW is defective.
Ensure that the cable has
activity on it. If the LED
still fails to turn on, then
the port is defective. Replace the RouteAbout
Access EW.
Console
terminal
doesn’t appear
to work. Wrong cable. Try connecting the console
terminal to the RouteAbout
Access EW using a null modem
cable with the appropriate MJ8
RS232 connector on the
module end.
Wrong baud rate. Send a BREAK to the console
and then press <Return>
several times until the console
responds. Proper baud rates
are 300, 1200, 2400, 4800,
9600, 18200, and 38400.
Defective module. Replace the RouteAbout
Access EW.