Acer HDS AMS200 Reference Manual page 109

Table 4.22 Control Unit LED Functions
LED Function
CHKSTP LED (red) When on, it indicates that a failure occurs in the controller (CTL side), so the controller is
inoperable.
Active (yellow) When on, it indicates that the link status is normal.
Link (green) When on, it indicates that data is being transferred.
Note1: Normal blinking:
On Off
(500 ms) (500 ms)
Note2: High-speed blinking (EALM LED):
On
Off
(100 ms) (100 ms)
Note3: Low-speed blinking:
On Off
(500 ms) (500 ms)
Blinks n times.
Note4: High-speed blinking (CHK LED):
On Off
(400 ms)
(200 ms)
Blinks n times.
3 s
1 s
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