3-12 Chapter 3
Troubleshooting
7302 SIMM 1 bytes are not equal Refer to the memory configuration tables
for the deallocated memory bank.
7303 SIMM 0 data and SIMM 1 data Refer to the memory configuration tables
for the deallocated memory bank.
7304 SIMM pair not equal size Refer to the memory configuration tables
for the deallocated memory bank.
7307 ECC test failed on bank Refer to the memory configuration tables
for the deallocated memory bank.
7403 Address did not map to bank Replace Processor/Memory card.
7406 Failed second level cache to memory access. Replace Processor/Memory card.
7407 Second level cache tag parity error. Replace Processor/Memory card.
7500 No RAM found
1. Re-seat or install SIMM pairs.
2. Replace Processor/Memory card.
7604 No bits set in test status Replace Processor/Memory card
7Fxy Memory failure. x equals slot number, y equals bank (A or
B).
Code Description Possible Cause