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

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Image 36
Dell 100-Mbps manual Post Beep Codes