The Sharp 27U-S600 and 27U-S710 are television models from Sharp, a renowned electronics manufacturer known for its innovative display technologies. These televisions likely belong to a generation of CRT (Cathode Ray Tube) models, popular in the late 20th century. While specific details about the exact year of production are unavailable from the provided information, these models likely featured a 27-inch screen, offering a standard viewing experience for the time. The "U" in the model name might signify the presence of a Universal Remote Control, enhancing user convenience. The service manual description suggests a comprehensive guide for technicians, including electrical specifications, safety precautions, user control layout, installation and service instructions, and detailed technical diagrams. This suggests a robust build and a focus on serviceability, a common characteristic of Sharp televisions. The service manual snippets provide valuable insight into the technical aspects of these models. The mention of "SERVICE ADJUSTMENT" indicates the presence of various settings and adjustments accessible to trained technicians, allowing for fine-tuning the television's performance. The "CHASSIS LAYOUT" and "BLOCK DIAGRAM" sections reveal the intricate circuitry and components within the television, crucial for understanding how it functions. The "SCHEMATI..." fragment likely refers to schematic diagrams, essential for troubleshooting and repair. It's important to note that while the service manual offers detailed technical information, it's intended for qualified technicians and should not be used for repair by individuals without proper knowledge and training.