This comprehensive service manual provides detailed instructions and technical specifications for the NEC MT840, MT1040, and MT1045 projectors. It includes a wealth of information for technicians and service professionals involved in maintenance, repair, and troubleshooting. The manual covers a wide range of topics including detailed component descriptions, circuit diagrams, troubleshooting guides, calibration procedures, and replacement parts information. This resource is essential for anyone seeking to understand the inner workings of these NEC projectors and ensure their optimal performance.