Dell 100-Mbps manual Post Beep Codes

Table 3-1. POST Beep Codes (continued)

Beep Code	Error	Probable Causes
1-3-1	Main-memory refresh verifi-	Faulty or improperly seated
	cation failure	DIMMs or defective system
		board
1-3-3	Chip or data line failure in the	Faulty or improperly seated
	first 64 KB of main memory	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	Bit failure in the first 64 KB
through	of main memory
2-4-4
3-1-1	Slave DMA-register failure	Defective system board
3-1-2	Master DMA-register failure
3-1-3	Master interrupt-mask regis-
	ter failure
3-1-4	Slave interrupt-mask register
	failure
3-2-4	Keyboard-controller test fail-	Faulty keyboard controller
	ure	(defective system board)
3-3-4	Screen initialization failure	Faulty video subsystem
		(defective video expansion
3-4-1	Screen-retrace test failure	card)
3-4-2	Search for video ROM failure
4-2-1	No timer tick	Defective system board
4-2-2	Shutdown failure
4-2-3	Gate A20 failure
4-2-4	Unexpected interrupt in pro-
	tected mode
4-3-1	Memory failure above	Faulty or improperly seated
	address 0FFFFh	DIMMs

3-2 Dell OptiPlex GXpro Systems Service Manual