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Error status display inside the front panel (on the KY-631 board)
When an abnormality is detected and error LED "1" inside the front panel lights in red or blinks in red,
four status LEDs from "2" to "5" (D108 to D111/KY-631 board) lights as follows.
Error code
"1"
1
Light / Blink
2
Light / Blink
3
Light / Blink
4
Light / Blink
5
Light / Blink
6
Light / Blink
7
Light / Blink
8
Light / Blink
9
Light / Blink
A
Light / Blink
B
Light / Blink
C
Light / Blink
D
Light / Blink
E
Light / Blink
F
Light / Blink
Note: When LED "1" is unlit (normal operation), all the LEDs from "2" to "5" light up. However, when the unit starts in the backup mode
with dip switch (S102/KY-631 board) No. 1 (S102-1) inside the front panel turned ON, all the LEDs from "2" to "5" blink while LED
"1" stays unlit.
3-2 (E)
"2" to "5"
Possible cause
2 3 4 5
The hardware has a problem.
2 3 4 5
The hardware has a problem.
2 3 4 5
Not used
2 3 4 5
The fan has a problem.
2 3 4 5
The temperature has risen.
2 3 4 5
The power supply has a problem.
2 3 4 5
Action around the Cell/B.E. chip on the BE-28 board
has a problem.
2 3 4 5
Action around the RSX chip on the BE-28 board has
a problem.
2 3 4 5
Not used
2 3 4 5
Not used
2 3 4 5
Not used
2 3 4 5
Not used
2 3 4 5
The lithium battery on the BE-28 board has a problem.
2 3 4 5
The system control has a problem.
2 3 4 5
The system control is operating in backup mode.
BCU-100 IM
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