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Table 56. Symptom-to-FRU index (continued)
Problem
indicator
Component
Possible cause
Possible solutions
All green LEDs
off
All FRUs
Subsystem power is off.
Check that all power cords are plugged in and all
power switches are on. If applicable, check that
the main circuit breakers for the rack cabinet are
turned on.
AC power failure
Check the main circuit breaker and ac outlet.
Both power supply and fan
units have failed.
Replace the power supply and fan units.
Both controller circuit
breakers have tripped.
Reset the controller circuit breakers.
Chapter 6. Hardware maintenance
203