Led Indicators For Sas/Sata Hdd Power & Status; Table 3.2: Sas/Sata Hdd Led Indicator Function - Advantech ACP-4320 User Manual

If the system is connected with a single PS/2 power supply, the Power LED is always
Green when power on.
When the PWR LED is RED, it indicates a redundant power supply failure. To stop
the alarm buzzer, press the Alarm Reset button. Then, check out the redundant
power supply right away and replace the failed power supply module with a good
one.
If the TEMP LED is RED and blinking, it means that the system detects an overly
high temperature in the chassis. An audible alarm is activated. To stop the alarm
buzzer, press the Alarm Reset button. Inspect the fan filter and the rear section of
the chassis immediately. Make sure airflow inside the chassis is smooth and not
blocked by dust or other particles.
When the HDD LED is Green and blinking, it indicates some data is written into or
read from the HDD. When it becomes no light, it indicates no data write/read is under
proceeding.
When the FAN LED is RED and blinking, it indicates a failed cooling fan, and the
alarm buzzer is also activated. To stop the alarm buzzer, press the Alarm Reset but-
ton, and replace the failed fan immediately.
When the LAN1/2 LED is Green, it indicates the LAN is linked but no data is transmit-
ted via the LAN. When it turns into blinking, it indicates some data is transmitted via
the LAN.
3.1.3 LED Indicators for SAS/SATA HDD Power & Status
Each SAS/SATA HDD tray has a pair of LED indicators for displaying the SAS/SATA
HDD power and the activity status. Please refer to Table 3.2 for the LED definition
summary.

Table 3.2: SAS/SATA HDD LED indicator function

LED Description
power of HDD
Status of HDD
When the system power is on and the SAS or SATA HDD is connected well, the HDD
power LED is Green. If it fails to light up, check if you connected the SAS or SATA
HDD well. Or please ask the technician to inspect the related cables in the chassis.
When the SAS or SATA HDD is transmitting data, the status LED blinks BLUE.
Green Blue
HDD power on N/A
N/A Data access:
Idle:
17
Blinking
Light (SAS HDD)
No light (SATA HDD)
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