Technical data

Acer | HDS AMS200 User and Reference Guide 85
4.7.5.4 ENC Unit
ENC Unit（RKAJ）
CHK LED (red)
A
LM LED (red)
P1 LED (green)
P0 LED (green)
Figure 4.30 ENC Unit LED Locations
Table 4.18 ENC Unit LED Functions
LED Function
P1 LED (green) When on, it indicates that the link status of FC-AL (loop 1 side) is normal.
P0 LED (green) When on, it indicates that the link status of FC-AL (loop 0 side) is normal.
ALM LED (red) When on, it indicates that a failure occurs in the ENC Unit, so the ENC Unit is inoperable.
CHK LED (red) It indicates, according to the number of times the LED flashes, what voltage is abnormal.
Low-Speed blinking (Note1)
Once: Logic +5 V voltage is abnormal.
Twice: Logic +12 V voltage is abnormal.
Three times: Logic +3.3 V voltage is abnormal.
Five times: Battery is abnormal.
Six times: ENC unit Logic+2.5V voltage is abnormal.
Seven times: BS 1.8 V, BS 3.3 V, or BS 12 V voltage is abnormal.
The following blinking is fast because ENC microprogram detects CUDG error.
High-speed blinking (Note2)
Once: SRAM error.
Twice: ENC hard error.
Three times: Microprogram error in flash memory.
Not blinking: Boot section error of ENC microprogram, RAM error, or ENC hard
configuration error.
Note1: Normal blinking:
On
(500 ms)
Off
(500 ms)
Note2: High-speed blinking (CHK LED):
On
(100 ms)
Off
(100 ms)