🏷️ Basic Information Identification Make: Roland Model: GR-500 / GS-500 Year: Unknown (Service Manual for Vintage Equipment) Generation: N/A (Vintage Equipment) 📋 Manual Details Publication Info Manual Type: Service Manual Language: English Page Count: N/A (Digital Download) Format: PDF Download Content Overview Scope: Repair, maintenance, and technical specifications for GR-500 & GS-500 systems ⚙️ Engine Specifications Guitar Synthesizer System Cpu: Custom Roland Processor Voice Polyphony: 6 Notes Sound Generation: Analog Synthesizer Voices Filters: Low-pass filters, Envelope filters 🔧 Transmission System Control Midi Protocol: Roland's Guitar System (GS) Protocol Control Interface: Hexaphonic Pickup and Control Unit 📐 Dimensions Physical Dimensions Gr 500 Dimensions: Controller: 22.5" x 12" x 4.5"; Sound Module: 17" x 11" x 4.5" (Approximate) Gs 500 Dimensions: N/A (Separate module for GR-500) Gr 500 Weight: Controller: ~15 lbs; Sound Module: ~10 lbs (Approximate) 🔧 Maintenance Routine Care Cleaning Procedures: Dusting, contact cleaning for jacks and switches Troubleshooting Common Issues: String-to-MIDI conversion inaccuracies, noisy jacks, power supply issues Component Replacement Fuse Types: T-Type Glass Fuses (Specific values detailed in manual) Calibration Pitch Tracking Calibration: Essential for accurate note detection Repair Guides Soldering Techniques: Recommended for component-level repairs Power Supply Voltage Requirements: 100-120V or 220-240V AC (depending on region) Wiring Diagrams Internal Wiring: Provided for component identification and repair