Dell Precision 400 Service Manual (.pdf) - Page 44
Table 3-1., POST Beep Codes, Slave DMA-register failure
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Table 3-1. POST Beep Codes Beep Code Error Probable Causes 1-3 Monitor not detected by Disconnected or faulty video BIOS monitor 1-1-3 NVRAM write/read failure Defective system board 1-1-4 BIOS checksum failure Faulty BIOS or defective system board 1-2-1 Programmable interval-timer Defective system board failure 1-2-2 DMA initialization failure 1-2-3 1-3-1 1-3-2 1-3-3 DMA page register write/ read failure Main-memory refresh verification failure No memory installed Chip or data line failure in the first 64 KB of main memory Faulty or improperly seated DIMMs or defective system board No memory installed or faulty or improperly seated DIMM Faulty or improperly seated DIMMs 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 through 2-4-4 3-1-1 Bit failure in the first 64 KB of main memory Slave DMA-register failure Defective system board 3-1-2 Master DMA-register failure 3-1-3 Master interrupt-mask register failure 3-1-4 Slave interrupt-mask register failure 3-2 Dell WorkStation 400 Systems Service Manual
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