Dell OptiPlex Gn+, Service Manual

Page: 50 / 139

3-2
Dell OptiPlex Gn and Gn+ Systems Service Manual
Table 3-1. POST Beep Codes
Beep Code Error Probable Causes
1-3 Monitor not detected Disconnected or faulty
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
1-2-2
1-2-3
Programmable interval-timer
failure
DMA initialization failure
DMA page register write/
read failure
Defective system board
1-3-1 Main-memory refresh verifi-
cation failure Faulty or improperly seated
DIMM or defective system
board
1-3-2 No memory installed No memory installed or faulty
or improperly seated DIMM
1-3-3
1-3-4
1-4-1
1-4-2
2-1-1
through
2-4-4
Chip or data line failure in the
first 64 KB of main memory
Odd/even logic failure in the
first 64 KB of main memory
Address line failure in the
first 64 KB of main memory
Parity failure in the first
64 KB of main memory
Bit failure in the first 64 KB
of main memory
Faulty or improperly seated
DIMM
3-1-1
3-1-2
3-1-3
3-1-4
Slave DMA-register failure
Master DMA-register failure
Master interrupt-mask regis-
ter failure
Slave interrupt-mask register
failure
Defective system board
3-2-4 Keyboard-controller test
failure Faulty keyboard controller
(defective system board)