IBM SAN256B-6, Installation, Service And User Manual

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Table 23. 2870 W AC Power supply LED descriptions (continued)
LED purpose Color Status Recommended action
Power status
Flashing on five times, and
then off 5 seconds. Power supply assembly fan
is faulty. Replace power supply.
Flashing on six times, and
then off 5 seconds. Over temperature
protection. Check for blocked air flow
or high ambient
temperature at power
supply. If status persists,
replace power supply.
Flashing on seven times,
and then off 5 seconds. Power supply is disabled. Disconnect power cable
from power supply, remove
and reinsert power supply,
and then reconnect power
cable to restart. If status
persists, replace power
supply assembly. If status
persists, replace power
supply.
Note: If airflow direction for a power supply assembly does not match the chassis airflow direction as
stored on WWN cards, the power supply will have a "fault" status. However, LED operation for the
power supply will not indicate a fault.
Interpreting fan assembly LEDs
Refer to the following illustration and table to interpret the LED patterns on fan assemblies. The LED
patterns may temporarily change during POST and other diagnostic tests. The SAN256B-6 has two fan
assemblies.
1 - Power LED
2 - Status LED
Table 24. Fan assembly LED descriptions
LED purpose Color Status Recommended action
Power
No light (LED is off) Fan assembly does not
have power. Ensure that the fan
assembly is firmly seated
and has power.
Steady green Fan assembly has power. No action required.
Figure 51. Fan assembly LEDs
Monitoring the device
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