A computer service manual is a comprehensive guide designed to assist technicians in diagnosing and repairing computer hardware and software issues. It typically includes detailed information about the computer's components, troubleshooting steps, and repair procedures. These manuals are essential for maintaining the performance and longevity of computers. In addition to repair instructions, a computer service manual often contains diagrams, specifications, and part numbers for components like the motherboard, hard drive, and power supply. This information helps technicians quickly identify problems and find the right solutions, ensuring efficient service and minimal downtime for users.