🏷️ Basic Information Identification Make: NEC Model: MT840 / 1040 / 1045 Year: N/A (Service Manual - covers multiple model years) Generation: N/A (Projector Model Series) 📋 Manual Details Publication Manual Type: Service Manual Language: English Page Count: Varies by PDF version (typically 200-400 pages) Format: PDF Access Availability: Downloadable Content Scope: Repair, troubleshooting, diagnostics, maintenance procedures ⚙️ Engine Specifications Imaging System Imaging Technology: 3LCD Resolution: XGA (1024 x 768) / WXGA (1280 x 800) - Varies by model (MT1045 is WXGA) Light Source Light Source Type: Lamp Lamp Type: UHP (Ultra High Pressure) Lamp Wattage: 200W or 215W (Typical) Color Performance Brightness: 2000-2500 ANSI Lumens (Varies by model) Contrast Ratio: 500:1 (Typical) 🔧 Transmission Lens Lens Type: Manual Focus / Optical Zoom Throw Ratio: 1.4 - 2.0:1 (Typical) 📐 Dimensions Physical Width: Approx. 303mm (11.9 inches) Depth: Approx. 246mm (9.7 inches) Height: Approx. 87mm (3.4 inches) Weight: Approx. 2.4kg (5.3 lbs) 🔧 Maintenance Lamp Replacement Lamp Life: Approx. 2000-3000 hours (Normal mode) Filter Cleaning Air Filter Cleaning Interval: Monthly (or as needed) Cleaning Lens Cleaning: As needed with specialized lens cleaner Troubleshooting Common Issues Covered: Power, image, connectivity, fan errors Calibration Color Calibration: Procedure for adjusting color and image settings Firmware Firmware Update Procedure: Included for updating projector software 📄 Technical Specs Connectivity Input Ports: VGA, S-Video, Composite Video, Audio In, USB (Type B for service) Control Ports: RS-232C