Board status LEDs

In addition to end bracket LEDs, the following banks of LEDs (D22-D37) located on the solder side of the TX 4000C board indicate the current status of the board:

 

Boot code LEDS

The boot code LEDs are active when the TX 4000C board is powered up. These LEDs progress through a series of red codes. If the power up is successful, these LEDs turn green. If no LEDs illuminate, the voltage level may be too low or the power supply may not be providing enough 3.3 V or 5 V current to power up the TX 4000C board.

Status LEDs

After the boot code LEDs become green, the status LEDs are active and indicate the current board status as described in the following table:

LED number

Color

Status when illuminated

D31

Green

Timer interrupt controlled heartbeat. The LED flickers to show that the timer interrupts are operating properly.

D30

-------

Reserved for internal use.

D29

Red

The kernel detected a host communication error.

D28

Red

The kernel detected a problem. Use the cpcon utility's log command to view logged error information. For information about using cpcon, refer to the Dialogic® TX Series SS7 Boards TX Utilities Manual.

D25

Green

Idle task controlled heartbeat. The LED flickers to show that the on-board operating system is operational.

D24

Red

The board entered the System Management Interrupt (SMI) routine, which is part of the TX reset procedure.

D23

Red

A memory full condition occurred on the board.

D22

Red

An unexpected exception occurred on the board.