RadiSys EPC-5A, Hardware & Software Reference Manual

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EPC-5A Hardware & Software Reference Manual
Page 94
9 9
Symptoms Possible cause(s) Solution
System fails at power-up -
will not run power-on self-
test. The system is not getting
power.
Hardware failure.
Check the backplane and verify that
+5V power is good. Verify that the
subplane is fully seated in the VME
backplane and the EPC-5A is fully
seated in the subplane.
This cannot be diagnosed in the
field. Call RadiSys Technical
Support.
Serial port(s) do not work. Bad power.
Interrupt conflicts
Port hardware failure.
Verify that bac12V and
-12V are good.
An EXM module is using the same
interrupts as COM1 and/or COM2.
Verify that no other card in the
EPC-5A subsystem is using IRQ3 or
IRQ4.
Call RadiSys Technical Support.
System will not talk across
VMEbus. The VMEbus backplane
may not be jumpered
correctly.
More than 1 master may
be set to provide Slot-1
functions.
EPC-5A or subplane may
have bent pins.
VMEbus interface failure.
See the section Installing the
VMEbus Backplane Jumpers, in
Chapter 2.
Make sure that only 1 system is
configured as the Slot-1 controller
and that it is the left-most system in
the chassis.
Remove the EPC-5A and the
subplane and verify that no pins are
bent. Then reinsert the subplane
and the EPC-5A.
Call RadiSys Technical Support.