Compaq ProLiant 6500 Compaq ProLiant 7000 Server Technology - Page 14

cont., Self-test, Auto Line Sensing, LED Standby Controls

Page 14 highlights

ECG078/0698 TECHNOLOGY BRIEF (cont.) ... The microcontroller performs the following functions: • Self-test - The intelligent power supplies perform their own power-on self-test that checks temperature, RAM integrity, ROM version, analog-to-digital conversion accuracy, and nonvolatile memory integrity of the power supply. • Auto Line Sensing - Because the power supplies are rated for both 750W (at 220V) and 500W (at 110V), a line-sensing feature automatically recognizes which line voltage is connected. The user does not need to configure the supply for voltage. • LED Standby Controls - The microcontroller also drives two status light-emitting diodes (LEDs) on the back of the power supply that indicate AC and DC power status, as shown in Figure 9. This gives the user vital status information at a glance. Green - AC power good Clear - AC power not good Clear - Front panel power switch off or open interlock Flashing Green - Power on delay or software power off Green - Outputs on and good Flashing Amber - Failed self test Amber - Outputs failed Flashing Amber/Green - Restart failed Figure 9: Power supply LED status indicators. 14

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T
ECHNOLOGY
B
RIEF
(cont.)
14
ECG078/0698
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The microcontroller performs the following functions:
Self-test
- The intelligent power supplies perform their own power-on self-test that checks
temperature, RAM integrity, ROM version, analog-to-digital conversion accuracy, and non-
volatile memory integrity of the power supply.
Auto Line Sensing
- Because the power supplies are rated for both 750W (at 220V) and 500W
(at 110V), a line-sensing feature automatically recognizes which line voltage is connected.
The user does not need to configure the supply for voltage.
LED Standby Controls
- The microcontroller also drives two status light-emitting diodes
(LEDs) on the back of the power supply that indicate AC and DC power status, as shown in
Figure 9.
This gives the user vital status information at a glance.
Green - AC power good
Clear - AC power not good
Clear - Front panel power switch off or open interlock
Flashing Green - Power on delay or software power off
Green - Outputs on and good
Flashing Amber - Failed self test
Amber - Outputs failed
Flashing Amber/Green - Restart failed
Figure 9: Power supply LED status indicators.