Table 3-1. Post Beep Codes - Dell Precision 400 Service Manual

3-2 Dell WorkStation 400 Systems Service Manual

Table 3-1. POST Beep Codes

Beep Code Error
1-3 Monitor not detected by
video BIOS
1-1-3 NVRAM write/read failure
1-1-4 BIOS checksum failure
1-2-1 Programmable interval-timer
failure
1-2-2 DMA initialization failure
1-2-3 DMA page register write/
read failure
1-3-1 Main-memory refresh verifi-
cation failure
1-3-2 No memory installed
1-3-3 Chip or data line failure in the
first 64 KB of main memory
1-3-4 Odd/even logic failure in the
first 64 KB of main memory
1-4-1 Address line failure in the
first 64 KB of main memory
1-4-2 Parity failure in the first
64 KB of main memory
2-1-1 Bit failure in the first 64 KB
through of main memory
2-4-4
3-1-1 Slave DMA-register failure
3-1-2 Master DMA-register failure
3-1-3 Master interrupt-mask regis-
ter failure
3-1-4 Slave interrupt-mask register
failure
Probable Causes
Disconnected or faulty
monitor
Defective system board
Faulty BIOS or defective sys-
tem board
Defective system board
Faulty or improperly seated
DIMMs or defective system
board
No memory installed or faulty
or improperly seated DIMM
Faulty or improperly seated
DIMMs
Defective system board