4-2
Cisco CVA122/CVA122E Hardware Installation Guide
OL-0799-02 (05/2001)
Chapter 4
Troubleshooting
Initialization and Self-Test Problems
Figure 4-1
Cisco CVA122/CVA122E Cable Voice Adapter Front Panel LEDs
Initialization and Self-Test Problems
When the Cisco CVA122/CVA122E Cable Voice Adapter first powers on, the following occurs:
1.
The cable voice adapter runs its self-test and diagnostic procedures. All LEDs briefly light and then
turn off when self-test and diagnostic procedures are successful. The procedures ensure that all
components are functioning. To complete all self-test and diagnostic procedures, the
Cisco CVA122/CVA122E Cable Voice Adapter must be able to:
–
Perform a system reset trap.
–
Fetch and execute instructions from the ROM Monitor area of the Flash memory chip.
–
Write several internal registers and reset the control processor successfully.
–
Correctly configure the port registers.
–
Perform conditional branches.
–
Verify that the software-controlled LEDs are functional.
If all diagnostic procedures are successful, the LEDs briefly blink.
2.
The next step of the self-test initializes the memory controller and its Dynamic Random Access
Memory (DRAM). If this step succeeds,
–
The cable voice adapter first attempts to initialize the memory controller. If this fails, the USB
LED lights and remains on to indicate a problem with the memory controller. Otherwise, the
console port is initialized and the banner is output to the console port.
–
Next, the cable voice adapter performs a self-test on the low registers of the DRAM. If a
problem exists, the Cable Status, Ethernet, and USB LEDs light and remain on to indicate a
problem with low memory.
–
The cable voice adapter then attempts to clear the processor’s cache memory. If this fails, the
Ethernet LED lights and remains on indicate a processor cache failure.
Cisco CV
A122
Cable Status
Ethernet Status
USB Status
Message
35992
