Table 39. DS4800 Symptom-to-FRU index (continued)
Problem
indicator Component Possible cause Possible solutions
All green LEDs
off
All CRUs 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 169
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