Digital Equipment DECbrouter 90, Installation And Operating Information

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Troubleshooting
DECbrouter 90 Backplane Configuration Troubleshooting
DECbrouter 90 Backplane Configuration Troubleshooting
Use Table 3–2 to troubleshoot a DECbrouter 90 installed in a DEChub 90
configuration.
Table 3–2 Troubleshooting a DECbrouter 90 in a DEChub 90 Backplane
If... Then... Do this...
The power LED is off The DECbrouter 90 is
not rec5.0 V.
Check the power LED on the
DEChub 90 power supply.
If the power LED on the
DEChub 90 is off, then
there is a problem with
the DEChub 90 power
supply.
See the troubleshooting
procedures in the
DEChub
90 Ethernet Backplane Owner’s
Manual
.
If the DEChub 90
power LED is on and
the other power LED
components are on, then
the DECbrouter 90 has
a power problem.
Reseat the DECbrouter 90 in
either the same slot or another
slot.
If the power LED on
the DEChub 90 power
supply is on and the
other power LED
components are off,
then the DEChub 90 has
a power problem.
See the troubleshooting
procedures in the DEChub
90 Ethernet Backplane Owner’s
Manual .
If the power LED turns
on when reseated in
the same slot, then the
DECbrouter 90 was not
properly seated.
Make sure the DECbrouter 90 is
properly seated in the slot.
If the power LED turns
on when reseated in
another slot, then the
problem is with the
DEChub 90.
See the troubleshooting
procedures in the DEChub
90 Ethernet Backplane Owner’s
Manual .
(continued on next page)
Troubleshooting 3–3