🏷️ Basic Information Identification Make: JVC Model: GR-D91US Product Type: Digital Video Camera 📋 Manual Details Publication Manual Type: Repair Manual Manual Format: PDF Language: English Availability: Downloadable 🔧 Maintenance Cleaning Head Cleaning Procedure: Instructions for tape head cleaning Calibration Focus Calibration: Procedure for focus adjustment Parts Replacement Common Parts For Replacement: LCD ribbon cable, motor, buttons 📄 Technical Features Imaging Imaging Sensor Type: CCD Optical Zoom: 16x Digital Zoom: 320x Storage Media Type: MiniDV Cassette Connectivity Firewire Port: Yes (i.LINK/IEEE 1394) Usb Port: Yes Display Lcd Screen Size: 2.5 inches Power Battery Type: Lithium-ion (e.g., BN-V428) Audio Microphone: Built-in Stereo Microphone Audio Format: PCM Digital Audio Recording Recording Format: DV Frame Rate: 25 fps (PAL) / 30 fps (NTSC) Special Features Image Stabilization: Digital Image Stabilization Night Mode: Yes (e.g., NightScope) Special Effects: Various (Fades, Wipes, Titler) 📄 Troubleshooting Common Issues Common Repair Areas: Tape transport mechanism, power supply, lens assembly, electronic boards Diagnostic Codes Error Code Information: Details on error codes and their meanings