
Introduction
Page 3 AM4311 User Guide
1.2.2 Front Panel
Figure 1-2: AM4311 Front Panel
1.2.2.1 Hot Swap LED (Blue LED)
The AM4311 board supports a blue Hot Swap LED mounted on the front panel. This LED indicates when it is
safe to remove the Module. The on-board MMC drives this LED to indicate the hot swap state but is controlled
by the carriers IPMC or the MicorTCA carrier manager.
The following states are possible:
1.2.2.2 Out-Of-Service (OOS) LED (LED1)
The AM4311 supports a green Activity LED mounted on the front panel. The position of this LED is near the
bottom handle beside the health LED.
Table 1-1: Blue LED State
LED state Description
Solid Off (0 % on) FRU activation in progress / FRU active
Solid On (100 % on) FRU inactive
Short Blink (10 % on) FRU deactivation request / FRU deactivation in progress
Long Blink (90 % on) FRU activation request
Table 1-2: OOS LED State
LED state Description
ON while executing the boot-block application
OFF when starting execution of the IPMI firmware.
Blinking while boot-block application is flashing a new IPMI firmware
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