🏷️ Basic Information Identification Make: JVC Model: AV-21U3 Product Type: Colour Television Product Category: Consumer Electronics Year: N/A Generation: N/A 📋 Manual Details Documentation Manual Type: Service Manual Language: English Page Count: 67 Format: PDF Availability: Downloadable Content Overview Precaution Section: True Specific Service Instructions Section: True Disassembly Section: True Adjustment Section: True Troubleshooting Section: True ⚙️ Engine Specifications Power Source Power Input: AC Mains Voltage Requirement: Standard household voltage (e.g., 110-240V AC, varies by region) 🔧 Transmission Signal Processing Signal Type: Analog TV Broadcast (likely CRT technology) 📐 Dimensions Physical Screen Size: 21 inches 🔧 Maintenance Cleaning Screen Cleaning Instructions: Refer to manual section for approved cleaning methods Repair Component Level Repair: Detailed in disassembly and troubleshooting sections Calibration Picture Adjustment Procedures: Covered in adjustment section 📄 Features Display Display Technology: CRT (Cathode Ray Tube) Audio Audio Output: Integrated speakers