🏷️ Basic Information Identification Make: Aiwa Model: TP-VS485 Product Type: Cassette Recorder 📋 Manual Details Manual Information Manual Type: Service/Repair Manual Language: English (Assumed from product description context) Format: PDF Download Compatibility Operating System Compatibility: Windows, Mac Manual Content Content Description: Complete service and repair information ⚙️ Engine Specifications Motor Type Motor Type: DC Servo Motor Motor Power Voltage Requirements: AC 100-240V, 50/60Hz (for power supply) 🔧 Transmission Drive System Drive System: Belt Drive Transport Mechanism Tape Transport Speed: 4.76 cm/s (Standard Cassette) 📐 Dimensions Physical Dimensions Width: 420 mm (Estimated based on similar Aiwa decks) Height: 100 mm (Estimated based on similar Aiwa decks) Depth: 250 mm (Estimated based on similar Aiwa decks) Weight: 3.5 kg (Estimated based on similar Aiwa decks) 🔧 Maintenance Cleaning Procedures Head Cleaning Recommendation: Regular cleaning with head cleaner Lubrication Capstan Lubrication: Periodic lubrication recommended Calibration Playback Speed Calibration: Requires calibration tools and manual guidance Troubleshooting Common Issues Covered: Mechanical faults, electronic circuit issues, playback problems 📄 Features Audio Features Noise Reduction: Dolby B NR Recording Features Recording Levels: Manual and Auto Level Recording Playback Features Playback Modes: Normal, CrO2, Metal tape playback Display Display Type: LED Counter Display 📄 Technical Specifications Frequency Response Frequency Response Normal Tape: 30 Hz - 16 kHz (Approx.) Signal To Noise Ratio Signal To Noise Ratio: 55 dB (with Dolby NR off)