32
Technical Manual
D2861 (BX922 S2)
LED indicators
Performance features
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3.5
LED indicators
3.5.1
Internal LEDs
There are several diagnostic LEDs on the system board, which are not visible
when the housing is closed.
By pressing the CSS button (INDICATE CSS BUTTON, see item 2 in the
following figure), the defective component can also be displayed in the power-
off state (power plug disconnected).
Figure 8: LEDs on the D2861 system board
Pos. Name
LED
lighting
Meaning
1
Mezzanine board 1
yellow
Error on mezzanine board 1
2
CSS button
none
activates the LEDs in case of an
error
3
DIMMs 1A - 1C, 2A - 2C
yellow
Memory module defective
4
CPU 2:
yellow
CPU defective
5
DIMMs 1D - 1F, 2D - 2F
yellow
Memory module defective
6
CPU 1
yellow
CPU defective
7
Mezzanine board 2
yellow
Error on mezzanine board 2
CPU 2
CPU 1
DIMM 2D
DIMM 1D
DIMM 2E
DIMM 1E
DIMM 1F
DIMM 2F
DIMM 1C
DIMM 2C
DIMM 1B
DIMM 2B
DIMM 2A
DIMM 1A
1
3
4
2
6
5
7
