Dell Precision T5500 Service Manual page 13

2-2-1 1st 64 K RAM chip or data line failure - bit 4
2-2-2 1st 64 K RAM chip or data line failure - bit 5
2-2-3 1st 64 K RAM chip or data line failure - bit 6
2-2-4 1st 64 K RAM chip or data line failure - bit 7
2-3-1 1st 64 K RAM chip or data line failure - bit 8
2-3-2 1st 64 K RAM chip or data line failure - bit 9
2-3-3 1st 64 K RAM chip or data line failure - bit A
2-3-4 1st 64 K RAM chip or data line failure - bit B
2-4-1 1st 64 K RAM chip or data line failure - bit C
2-4-2 1st 64 K RAM chip or data line failure - bit D
4-2-4 Unexpected interrupt in Protected Mode
RAM test in progress or failure above address
4-3-1
0FFFFh
4-3-2 No memory in Bank 0
Interval Timer Channel 2 test in progress or
4-3-3
failure
4-3-4 Time-Of-Day Clock test in progress or failure
4-4-1 Super I/O chip failure
4-4-4 Cache test failure