IBM SAN768B-2, Installation, Service And User Manual

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Power LED
Table 9. Power supply LED descriptions
LED purpose Color Status
Recommended
Action
Power No light (LED is off) Power supply does
not have incoming
power and is not
providing power to
the system. Ensure power supply
is firmly seated, the
system has incoming
power, both power
cables are connected,
and AC power
switches are on.
Steady green Power supply has
incoming power and
is providing power to
the system. No action required.
Flashing green Power supply is
about to fail. Replace the power
supply.
Blower assembly status
Complete the following steps to determine the status of a blower assembly.
1. Check the LED indicators on the blower assembly (see Figure 21 on page 63).
The LED patterns may temporarily change during POST and other diagnostic
tests; for information about how to interpret the LED patterns, see Table 10 on
page 63. The system has three blower assembly modules. Be sure to check each
module.
2. Check the blower assembly status using the fanShow command.
The status for each blower assembly displays OK, Absent, or Faulty. The RPM
of each fan in the assembly is also provided. If a blower assembly is absent or
faulty, contact IBM. Both physically absent or faulty could also be the result of
the blower assembly not being properly seated or being turned off.
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b768ig021
Figure 20. Power supply LEDs
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SAN768B-2 Installation, Service, and User Guide