Table 4–3 Troubleshoot with the I/O Drawer OCP
Symptom Possible
Cause
Indicators
I/O drawer OCP
System does not power up.
48V problem
OCP LEDs off
Table 4–4 Troubleshoot 48V Issues
Symptom Possible
Cause
Indicators
Any Vaux problem will cause 48V problems
Any LAN problem
Any OCP problem
See the Vaux,
LAN and OCP
sections of your
Service CD
Signal from the MBM to the power distribution
panel on the subrack not good (cables or cable
connections)
Power supply
LEDs off
MBM failure
Power supply
LEDs off
System or part of
the system does
not power up
and/or the fans
are off
More than one power supply broken
Power supply
LEDs off
Configure and Troubleshoot 4-9
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