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Event code
The operation status of the system unit is displayed. Under normal operation,
all LEDs are OFF. If an error occurs, the LED corresponding to the component
where the error occurred is turned on.
Table 2-3: Event code indicate
MAINTENANCE LED
1
2
3
4
5
6
7
8
All off
Post code
The POST code of the system BIOS is displayed as two-digits where one-digit
consists of four bits. The LEDs 1 through 4 indicate the upper digit.
The LEDs 5 through 8 indicate the lower digit. The smaller the LED number is
the higher bit the LED represents.
If Power On Self Test (POST) is successful, only LEDs 1, 3, 5, 6, and 7 are
turned on. (That means "AE" is displayed.)
Figure 2-3: Post code indicate
2-4
Where the error occurred
CPUs
Memory
Motherboard
PCI
Power / Voltage
Fans
Temperature
Other hardware
Normal operation
The MAINTENANCE LEDs keep the display of the POST code unless
the AC power source is turned off. In addition to that, when an error
occurred, the MAINTENANCE LEDs keep the display of the event
code. When the power is turned on, the display gets cleared.
Monitoring operating status
Hitachi Compute Rack 210H User's Guide
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