101
RUN LED
status
ALM LED
status
Description
Flashing (0.5 Hz)
Slow flashing
(0.25 Hz)
The temperature of the module exceeds the upper limit or drops
below the lower limit.
On
On
The module is starting up or faulty.
Off
Off
No module is present.
NOTE:
•
Before the active MPU starts up, all module LEDs are off. The tables describe the module LED status after
the active MPU starts up.
•
The ALM LED lights for a period of time at the initial phase of the system startup.
MPU active/standby status LED
Each MPU has one ACTIVE LED to indicate the active or standby status of the MPU.
Table 52 MPU active/standby status LED description
ACTIVE LED status
Description
On
The MPU is active.
Off
•
The MPU is in standby status.
•
The MPU is faulty. You can locate the problem by examining MPU LED
status.
CF card status LED
Each MPU provides a CF card status LED (CFS) to indicate the status of the CF card.
Table 53 CF card status LED description
LED LED
status
Description
CFS
On
The CF card is in position.
Off
The CF card is not in position or is damaged.
RJ-45 Ethernet port LEDs
The MPU provides an RJ-45 Ethernet port LED for each RJ-45 Ethernet port to indicate the link
status and data receiving/forwarding status of the Ethernet ports.
Table 54 RJ-45 Ethernet interface LED description
LED LED
status
Description
RJ-45 Ethernet interface
status LED
Flashing
The Ethernet port is receiving or sending data.
On
A link is present.
Off
No link is present.
