User`s manual

14 Server System Features
Light Guided Diagnostics
The server board contains diagnostic LEDs to help you identify failed and failing components, and to
help you identify the server from among several servers. Except for the ID LED, the status LED, and
the 5V standby LED, the LEDs turn on (amber) only if a failure occurs.
Figure 7. Light Guided Diagnostic LEDs
A. POST Code LEDs H. DIMM C1 Fault
B.
ID LED I. DIMM C2 Fault
C. Status LED J. DIMM D1 Fault
D. DIMM A1 Fault
K. DIMM D2 Fault
E. DIMM A2 Fault L. CPU 1 Fault
F. DIMM B1 Fault M. CPU 2 Fault
G. DIMM B2 Fault N. 5V Standby
1
A
M
M
I
D
2A MMID
1
B
MMI
D
2B MMID
1
C
M
M
I
D
2C MMID
1
D
MMI
D
2D MMID
G
D
E
F
I
J
H
K
N
L
M
C
B
A