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Fast Ethernet Switching System User’s Guide
Troubleshooting
128
Table 15: Explanation of LED Error Status
Explanation of LED Error Status
Boot Program Flash Damaged This error message indicates that the Boot
Program section of Flash Memory is either
corrupted or damaged.
Signature/Checksum test of Boot Program
has failed.
Run Time Program Flash
Damaged
This error message indicates the Run Time
Program section of Flash Memory is either
corrupted or damaged.
Signature/Checksum test of Run Time
Program has failed.
CPU Memory Failure This error message indicates the CPU
Memory (total of 8MB DRAM) section of
the System Memory has failed its
read/write test.
Peripheral Controller Failure This error message indicates the failure of
the onboard 82C59 Interrupt Controller.
Com Port Test Failure This error message indicates the SIO chip
has failed its diagnostic test.
NPB Failure This error message indicates general failure
of NPB chip(s).
PSP Memory Failure This error message indicates the port buffer
(PSP Memory) has failed its on read/write
test.
PSP Failure This error message indicates general failure
of PSP chip(s).
FEIU Failure This error message indicates general failure
of FEIU chip(s).
PHY Failure This error message indicates general failure
of PHY chip(s).
ARL Failure This error message indicates general failure
of ARL chip(s).
ARL Memory Failure This error message indicates the MAC
address table (ARL Memory) has failed its
own read/write test.
Exception Handler This error message indicates CPU
exception occurs due to divide by zero,
invalid opcode and other general
protection. The content of all CPU registers
will be dumped onto the console screen.