User guide

Performing Troubleshooting Procedures, Continued
Failure
Indications
An ISE can fail during initial power-up or during normal
operation. The following table describes the states of the LEDs,
what these states mean, and what actions you should take.
When . . . It means . . . And you . . .
The green READY
LED is on and the red
FAULT LED is off
the operating
condition is normal
can use the ISE.
The red FAULT and
green READY LEDs
turn on and stay on
the ISE is unable to
execute the POST
should power down the
system, check DSSI cable,
and try again. If failure
persists, call Digital Services.
Neither LED turns on proper amount of
power may not be
getting to the ISE
should check power supply
and DSSI cable. If failure
persists, call Digital Services.
The red FAULT LED
turns on and stays on
a fault condition
exists
should run local programs,
as described in Chapter 4,
to isolate failure. If unable
to access local programs,
check DSSI node ID. If failure
persists, call Digital Services.
The red FAULT LED
flashes (10 Hz)
an OCP failure
occurs
check that the OCP contains
a drive select plug and/or that
the plug ID number is unique
for that bus.
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