Dell Precision T7500 (Early 2009) - Manual (Page 15)

System Beep Codes
Beep
Code
Description
Beep
Code
Description
1-1-2 CPU register test in progress 2-4-3 1st 64 K RAM chip or data line failure - bit E
1-1-3 CMOS read/write test in progress or failure 2-4-4 1st 64 K RAM chip or data line failure - bit F
1-1-4 BIOS ROM checksum in progress or failure 3-1-1 Slave DMA register test in progress or failure
1-2-1 Timer Test in progress or failure 3-1-2 Master DMA register test in progress or failure
1-2-2 DMA initialization in progress or failure 3-1-3 Master IMR test in progress or failure
1-2-3
DMA page register read/write test in progress
or failure
3-1-4 Slave IMR test in progress or failure
1-3-1 RAM refresh verification in progress or failure 3-2-2 Interrupt vector loading in progress
1-3-2 1st 64 K RAM test in progress or failure 3-2-4 Keyboard controller test in progress or failure
1-3-3
1st 64 K RAM chip or data line failure (multi
bit)
3-3-1 CMOS power fail and checksum test in progress
1-3-4 1st 64 K RAM odd/even logic failure 3-3-2 CMOS Config info validation in progress
1-4-1 1st 64 K RAM address line failure 3-3-3 RTC/Keyboard controller not found
1-4-2 1st 64 K RAM parity test in progress or failure 3-3-4 Screen memory test in progress or failure
1-4-3 Fail-safe timer test in progress 3-4-1 Screen initialization test in progress or failure
1-4-4 Software NMI port test in progress 3-4-2 Screen retrace tests test in progress or failure
2-1-1 1st 64 K RAM chip or data line failure - bit 0 3-4-3 Search for video ROM in progress
2-1-2 1st 64 K RAM chip or data line failure - bit 1 4-2-1 Timer tick interrupt test in progress or failure
2-1-3 1st 64 K RAM chip or data line failure - bit 2 4-2-2 Shutdown test in progress or failure
2-1-4 1st 64 K RAM chip or data line failure - bit 3 4-2-3 Gate A20 failure
2-2-1 1st 64 K RAM chip or data line failure - bit 4 4-2-4 Unexpected interrupt in Protected Mode
2-2-2 1st 64 K RAM chip or data line failure - bit 5 4-3-1
RAM test in progress or failure above address
0FFFFh
2-2-3 1st 64 K RAM chip or data line failure - bit 6 4-3-2 No memory in Bank 0
2-2-4 1st 64 K RAM chip or data line failure - bit 7 4-3-3
Interval Timer Channel 2 test in progress or
failure
2-3-1 1st 64 K RAM chip or data line failure - bit 8 4-3-4 Time-Of-Day Clock test in progress or failure
2-3-2 1st 64 K RAM chip or data line failure - bit 9 4-4-1 Super I/O chip failure
2-3-3 1st 64 K RAM chip or data line failure - bit A 4-4-4 Cache test failure
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