In addition to external connection status LEDs and Ethernet LEDs, the following banks of LEDs (D6-D21) located on the back of the TX 4000 board indicate the current status of the board:
The following illustration shows the TX 4000 board status LEDs:
The boot code LEDs are active when the TX 4000 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 levels may be too low, or the power supply may not be providing enough 3.3 V or 5 V of current to power up the TX 4000 board.
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 |
D8 |
Green |
Timer interrupt controlled heartbeat. The LED flickers to show that the timer interrupts are operating properly. |
D9 |
Green |
Idle task controlled heartbeat. The LED flickers to show that the on-board operating system is operational. |
D12 |
Red |
The board is executing in snapshot mode: the board is resetting or txsnap is running. |
D13 |
------ |
Reserved for internal use. |
D18 |
Red |
The kernel detected a host communication error. |
D19 |
Red |
A memory full condition occurred on the board. |
D20 |
Red |
An unexpected exception occurred on the board. |
D21 |
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. |