Memory machine ID test failed
Memory system ROM checksum failed
Write/Read test failed
Address test failed
Random pattern test failed
Noise test failed
Random address test failed
1. Flash the system ROM and retest.
2. Replace the system board and retest. 
1. Remove the memory module and retest.
Failed ID Test
Failed Selftest/Interface Test
Failed Individual Key Test
Failed Keyboard Repeat Test
connect the keyboard.
2. Replace the keyboard and retest.
3. Replace the system board and retest.
Diskette format failed
Diskette read test failed
Diskette write, read, compare test failed
Diskette random read test failed
Diskette ID media failed
Diskette speed test failed
Diskette reset controller test failed
Diskette change line test failed
Diskette type error
Diskette drive speed not within limits Diskette drive/media ID error
3. Replace the diskette drive and retest. 4. Replace the system board and retest.
Serial port test failed xx
through 
1. Disconnect external monitor and test
with internal LCD display.
2. Replace the display assembly and retest. 
3. Replace the system board and retest.
Replace the system board and retest.
Replace the system board and retest.
1. Replace the CD and retest.
4. Replace the CD drive and retest.
1256, 1272, 1266, 1260, 1274 specifications
The Compaq series of printers, specifically the models 1273, 1267, 1275, 1262, and 1255, represents a noteworthy chapter in the realm of commercial printing technology from the 1990s. Each model was designed to cater to various user needs, ranging from high-quality document printing to efficient office use.The Compaq 1273 is characterized by its robust performance aimed at small to medium businesses. This model is equipped with high-resolution printing capabilities which allows for sharp and vibrant output, making it ideal for presentations and marketing materials. The 1273 also supports multiple paper sizes, enhancing its versatility for different printing tasks.
Moving on to the Compaq 1267, this model bridges the gap between compact design and high efficiency. It features a user-friendly interface that simplifies the printing process, making it accessible for users with varying tech proficiency. Additionally, the 1267 incorporates a fast print speed, ensuring that tasks are completed quickly without sacrificing quality.
The Compaq 1275 is notable for integrating advanced printing technologies aimed at increasing productivity. This model offers both black-and-white and color printing options, catering to diverse printing needs. Furthermore, the 1275 supports network connectivity, allowing multiple users to share the printer effectively, fostering collaboration within office environments.
The Compaq 1262 places an emphasis on cost-effectiveness, appealing to budget-conscious consumers. It provides essential functionalities without unnecessary features, making it a solid choice for home offices. Despite its lower price point, it still upholds a commendable print quality, ensuring that users do not have to compromise.
Lastly, the Compaq 1255 offers basic printing capabilities that are particularly suited for everyday tasks. It is designed for users who require reliable performance without the bells and whistles of higher-end models. The 1255 is lightweight and compact, making it easy to fit into various spaces, ideal for smaller work areas.
In conclusion, the Compaq series 1273, 1267, 1275, 1262, and 1255 present a range of features catering to different audiences. Each model encapsulates the brand's commitment to quality, efficiency, and user-friendliness, making them attractive options for various printing needs in the business landscape of the 1990s.