. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 2-2

Fatal Error Messages

Message

Description

Beep Code

 

 

 

CMOS RAM test failed

A walking bit test of CMOS RAM location 0E (Hex) -

3

 

3F (Hex) failed.

 

 

 

 

DMA controller faulty

A sequential read/write of the transfer count and

4

 

transfer address registers within the primary and

 

 

secondary DMA controllers failed.

 

 

 

 

Faulty DMA page registers

A walking bit read/write of the 16 DMA controller

0

 

page registers starting at location 80 Hex failed.

 

 

 

 

Faulty refresh circuits

A continuous read/write test of port 61h found that

1

 

bit 4 (Refresh Detect) failed to toggle within an

 

 

allotted amount of time.

 

 

 

 

Interrupt controller failed

A sequential read/write of various Interrupt

5

 

Controller registers failed.

 

 

 

 

ROM checksum incorrect

A checksum of the ROM BIOS does not match the

2

 

byte value at F000:FFFF.

 

 

 

 

RAM error at location xxxx

RAM error occurred during memory test.

None

 

 

 

Parity error at unknown location

Parity error occurred.

None

 

 

 

The following table lists some of the Fatal Error beep codes, along with the beep sequence (short, long, pause) and the meaning of the beeps.

Table 2-3

Fatal Error Beep Codes

Beep Code

Beep Sequence

Explanation

Remedy

 

 

 

 

0

S-S-S-P-S-S-L-P

The DMA page registers are

Replace system board.

 

 

faulty.

 

 

 

 

 

1

S-S-S-P-S-L-S-P

The refresh circuitry is faulty.

Replace system board.

 

 

 

 

2

S-S-S-P-S-L-L-P

The ROM checksum is incorrect.

1. Flash the ROM.

 

 

 

2.Replace system board.

 

 

 

 

3

S-S-S-P-L-S-S-P

The CMOS RAM test failed.

Replace system board.

 

 

 

 

4

S-S-S-P-L-S-L-P

The DMA controller is faulty.

Replace system board.

 

 

 

 

5

S-S-S-P-L-L-S-P

The interrupt controller failed.

Replace system board.

 

 

 

 

6

S-S-S-P-L-L-L-P

The keyboard controller failed.

Replace system board.

 

 

 

 

7

S-S-L-P-S-S-S-P

Graphics adapter is faulty.

Replace system board.

 

 

 

 

8

S-S-L-P-S-S-L-P

Internal RAM is faulty.

Replace processor board.

 

 

 

 

S = Short, L = Long, P = Pause

2-6 Troubleshooting

Page 33 Page 35
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Image 34
Compaq 4130T, 4150T, 4140T, 4131T, 4200, 4125T Fatal Error Messages, Fatal Error Beep Codes, Message Description Beep Code
Page 33 Page 35

4130T, 4200, 4115, 4150, 4131T specifications

The Compaq 4160T Slimline, along with its variants – 4125D, 4150, 4120T, and 4150T – represents a series of personal computers that were engineered during the early 1990s. These systems were particularly popular for their compact design and efficient performance, catering to both individual users and businesses seeking reliable computing solutions.

The Compaq 4160T Slimline was designed with portability in mind. It featured a slim form factor that allowed it to fit easily into limited spaces, making it an ideal choice for environments where desk space was at a premium. One of the standout characteristics of the 4160T was its lightweight design, which aided in ease of transport.

The 4125D variant was notable for its robust performance capabilities. It utilized an Intel 486 processor, which provided enhanced processing power for multitasking and running memory-intensive applications. The system came equipped with an array of RAM options and upgradable storage, making it adaptable to various user needs.

The Compaq 4150 and 4150T models built upon the strong foundation of their predecessors, offering improved specifications. These models supported a greater range of peripheral devices, including external drives, printers, and modems, thanks to their extensive connectivity options. The 4150T further featured advanced graphics capabilities, making it suitable for light gaming and multimedia tasks.

The 4120T targeted users who prioritized a balance between performance and cost. With its value-driven design, this model provided essential computing features and was often utilized in educational settings and small offices. Its reliability and ease of use made it a favored choice for individuals who required straightforward functionality.

All models in this series showcased Compaq's commitment to innovation, featuring technologies such as integrated memory management and support for DOS-based applications. Additionally, the systems were equipped with customizable options, allowing users to choose specific configurations that best suited their unique requirements.

In summary, the Compaq 4160T Slimline and its counterparts presented a solution that combined compact design with practical performance. Their legacy continues to remind us of the evolution of personal computing and the foundational role that systems like these played in the development of modern PCs. These models represented a bridge between earlier computing technology and the more sophisticated devices that followed, paving the way for advancements in the industry.
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