User manual

17 ACP-2010MB User Manual
Chapter 3 Operation
3.1.2 LED Indicators for System Status
Four LEDs are placed on the left side of the front panel to indicate system health and
activity. Refer to Table 3.1 for an LED definition summary.
When the system power is on, the power LED is Green.
If the power LED is RED, it indicates a redundant power supply module failure. To
stop the alarm beep, press the Alarm Reset button. Examine the redundant power
supply module right away and replace the failed module with a working one.
If the fan LED is RED, it indicates a failed cooling fan, and the alarm is also activated.
To stop the alarm beep, press the Alarm Reset button and then replace the failed fan
with a working one immediately.
If the temperature LED is RED, it means that inside of the chassis is overheated
(more than 50
° C). An audible alarm will be activated. To stop the alarm beep, press
the Alarm Reset button. Inspect the fan filter and the rear section of the chassis
immediately. Make sure the airflow inside the chassis is smooth and not blocked by
dust or other particles.
Table 3.1: LED indicator functions
LED Description Green Red
System power Normal Abnormal
Hard disk drive activity Data access No light
Temperature in the chassis Normal Abnormal
Cooling fan status Normal Abnormal