Compaq 112726-001 - ProLiant - 6500 Technology Brief page 14

ECG078/0698
T B
ECHNOLOGY RIEF
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The microcontroller performs the following functions:
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Self-test - The intelligent power supplies perform their own power-on self-test that checks
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temperature, RAM integrity, ROM version, analog-to-digital conversion accuracy, and non-
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volatile memory integrity of the power supply.
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Auto Line Sensing - Because the power supplies are rated for both 750W (at 220V) and 500W
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(at 110V), a line-sensing feature automatically recognizes which line voltage is connected.
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The user does not need to configure the supply for voltage.
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LED Standby Controls - The microcontroller also drives two status light-emitting diodes
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Figure 9. This gives the user vital status information at a glance.
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(cont.)
G r e e n - A C p o w e r g o o d
Clear - AC power not good
Clear - Front panel power switch off or open interlock
Flashing Green - Power on delay or software power off
G r e e n - O u t p u t s o n a n d g o o d
Flashing Amber - Failed self test
A m b e r - O u t p u t s f a i l e d
F l a s h i n g A m b e r / G r e e n - R e s t a r t f a i l e d
Figure 9: Power supply LED status indicators.