EMC Connectrix B Series Hardware Reference Manual page 53

Table 4-1 describes the system status (port side) LEDs. There are also
system status LEDs on the nonport side of the AP-7420B. Refer to
Figure 4-2 on page 4-7 for their location and Table 4-5 on page 4-8 for
a description of the LED activity.
Table 4-1 System Status LEDs (Port Side)
LED Label LED Color
System Off
Green
Yellow
Yellow
(blinking)
Ports Off
Green
Yellow
Power Green
Indication
System initializing (or power is off).
System status is good.
System or FRU fault(s) detected; survivable
failure(s).
Beacon is on.
System initializing (or power is off).
Port status is good.
Port fault(s) detected.
Power is on.
Monitor System Components
4-3
Port-Side LEDs
4