Initialization And Self-Test Problems - Cisco CVA122 Hardware Installation Manual

Initialization and Self-Test Problems

Figure 4-1
Initialization and Self-Test Problems
When the Cisco CVA122/CVA122E Cable Voice Adapter first powers on, the following occurs:
1.
2.
Cisco CVA122/CVA122E Hardware Installation Guide
4-2
Cisco CVA122/CVA122E Cable Voice Adapter Front Panel LEDs
Cable Status
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.
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.
Ethernet Status USB Status
Chapter 4 Troubleshooting
Message
OL-0799-02 (05/2001)