Audio Alert
Duration
Frequency
Description
Short beep (0.5 seconds) 1
• The NAS is starting up.
• When the reset button is pressed for 3 seconds,
the NAS resets configurations.
• When the reset button is pressed for 10 seconds,
the NAS resets configurations and reboots.
3
• The firmware was updated.
• Cannot detect installed disk.
Long beep (1.5 seconds)
1
• The NAS is powering off.
• The NAS was powered on successfully and is
ready.
2
• The NAS was powered off by force shutdown
(hardware shutdown).
• The disk volume is about to reach its full
capacity.
• The disk volume has reached its full capacity.
• The drives are in degraded mode.
• The drive is rebuilding.
3 (every 5 minutes)
The system fan is not functioning.
TS-435XeU User Guide
Basic Operations
37
