Acer HDS WMS100 Reference Manual
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Acer | HDS WMS100™ User and Reference Guide 75
4.6.5.7 Control Unit
CACHE POWER LED (Green)
CHKSTP LED (Red)
RST LED (Orange)
CALM LED (Red)
GP1 LED (Green)
GP0 LED (Green)
CHK LED (Red)
EALM LED (Red)
P0/P1 LED (Green)
GP1 LED (Green)
GP0 LED
(
Green
)
FC Interface Board
Control Unit
Figure 4.27 Control Unit LED Locations
Table 4.20 Control 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.
EALM LED (red) Indicates error factors by the lighting or blinking pattern.
Lighting: When on, it indicates that a failure occurs in the controller (SENC side), so the controller is
inoperable.
Blinking: Normal blinking (Note 1) (CHK LED is on): An exceptional process error detected by the
ENC microprogram.
High-speed blinking (Note 2) (CHK LED is on): An exceptional process error detected by the ENC
microprogram. (stack over)
Normal blinking: (Note 1) (CHK LED is off): Indicates that FLASH write is performed during the
ENC microprogram download. (It is not in the abnormal status.)
CHK LED (red) It indicates error factors by means of number of blinks:
Low-Speed blinking (Note3)
Once: Drive +5 V voltage is abnormal.
Twice: Drive +12 V voltage is abnormal.
Five times: Battery is abnormal.
Six times: Voltage on the controller is abnormal. (Reset of the controller is not canceled)
Seven times: BS 12 V voltage is abnormal.
Nine times: Fan assembly is abnormal.
The following blinking is fast because ENC microprogram detects CUDG error:
High-speed blinking (Note4)
Once: SRAM error.
Twice: SENC hard error.
Three times: Microprogram error in flash memory.
Not blinking: Boot section error of ENC microprogram, RAM error, or ENC hard configuration error.
CACHE POWER
LED (green)
When on or off, it indicates the status of the cache memory backup operation.
On: Backup operation is in execution.
Off: Backup operation is not in execution.
RST LED (orange) When on, it indicates that the controller is resetting.
CALM LED (red) When on, it indicates that a failure occurs in the controller (CTL side), so the controller is
inoperable.
GP0 LED (green) It indicates the status of the interface installed in the controller is normal.
GP1 LED (green) It indicates the status of the interface installed in the controller is normal.
CHKSTP LED (red) When on, it indicates that a failure occurs in the controller (CTL side), so the controller is
inoperable.