30
RSC-2AT User's Manual
Chapter 3 Hardware Introduction
3.1.4 LEDs
Expander Blink (LED2)
Blue
(Blinking)
Expander alive, 0.833Hz
(12 seconds per cycle)
Expander Heart Bit (LED1)
Blue
(Blinking)
Expander FW running
HDD Activity LEDs
Blue (On)
HDD present
Blue
(Blinking)
HDD Activity detected or
Locate HDD
Off
HDD no connect or Power Off
HDD Fault/Status LEDs
Off
Normal
Red (Blinking)
Re-build status
Red (On)
HDD Fault or Locate HDD
MCU Status (LED3)
Yellow (On)
MCU alive
Yellow (Off)
Boot loader mode
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
1
5
6
10
A8
A6
A5
A3
A2
A9
B8
A7
A4
B5
B6
A1
B3
B2
B9
C8
B7
B4
C5
C6
B1
C3
C2
D8
C9
D5
D6
C4
C7
D2
D3
C1
D9
D4
D7
D1
A8
A6
A5
A3
A2
A9
B8
A7
A4
B5
B6
A1
B3
B2
B9
C8
B7
B4
C5
C6
B1
C3
C2
D8
C9
D5
D6
C4
C7
D2
D3
C1
D9
D4
D7
D1
A8
A6
A5
A3
A2
A9
B8
A7
A4
B5
B6
A1
B3
B2
B9
C8
B7
B4
C5
C6
B1
C3
C2
D8
C9
D5
D6
C4
C7
D2
D3
C1
D9
D4
D7
D1
1
2
1
2
1
2
1
2
4
1
4
1
4
1
4
1
1
5
2
6
1
5
2
6
2
5
1
6
2
9
1
10
1
7
6
12
1
8
7
14
2
13
1
14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
S1
S7
P1
P15
S8
S14
1
3
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
4
1
4
1
4
1
4
1
4
1
1
23
2
24
LED3
Act LED
Fail LED
A9
A8
A7
A6
A5
A4
A3
A2
A1
B5
B3
B2
B6
B8
B9
B7
B4
B1
D1
D4
D7
D9
D5
D2
D3
D8
D6
C1
C4
C7
C9
C5
C3
C2
C6
C8
A9
A8
A7
A6
A5
A4
A3
A2
A1
B5
B3
B2
B6
B8
B9
B7
B4
B1
D1
D4
D7
D9
D5
D2
D3
D8
D6
C1
C4
C7
C9
C5
C3
C2
C6
C8
A9
A8
A7
A6
A5
A4
A3
A2
A1
B5
B3
B2
B6
B8
B9
B7
B4
B1
D1
D4
D7
D9
D5
D2
D3
D8
D6
C1
C4
C7
C9
C5
C3
C2
C6
C8
1
2
1
2
1
2
1
2
+
1
4
1
4
1
4
1
4
1
2
5
6
1
2
5
6
2
5
6
1
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2
9
10
1
1
7
12
6
1
8
14
7
2
13
14
1
A1
K
A2
A1
K
A2
1
3
4
6
1
5
10
15
20
1
5
10
15
20
25
26
A
E
K
R
Y
AE
AF
1
3
B
C
E
B
C
E
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
G
D
S
4
4
4
4
4
G
A
O
I
1
2
23
24
LED1
LED1
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