Allied Telesis AT-8400 Series Reference Manual page 72

Installing and Replacing the AT-8401 Management Card
58
12. Make sure the POWER, FAN A, and FAN B LEDs are a steady green.
See Figure 30.
Figure 30 AT-8401 Management Card LEDs
M
A T - 8
4 0 1
R S - 2
3 2
T E R
M I N A
L
P O R
T
P W R
F L T
M G M
T
M S T
R
F A N
A
W A I T
F A N
/
B
R E M
O V E
R E S
E T