This document is a service manual for the SPECTRUM Series LCD Monitor LM-700/LM-700A. It provides repair service information including specifications, precautions, operating instructions, adjustment methods, circuit and software descriptions, and troubleshooting charts.
This service manual provides detailed information for repairing and maintaining the Spectrum LM-700/LM-700A LCD monitor. It includes general specifications, safety notices, installation steps, adjustment procedures, and full schematics for the mainboard, adapter and audio circuits.
Key sections cover LCD panel handling, high‑voltage warnings, connector pin‑out, power supply details, and step‑by‑step adjustment of brightness, contrast, white‑balance and color temperature. Troubleshooting charts and parts listings are also provided for field service technicians.
| Display size | 17 inches diagonal |
|---|---|
| Pixel pitch | 0.264 mm x 0.264 mm |
| Resolution | 1280 x 1024 RGB |
| Color depth | 8‑bit, 16.7 million colors |
| Input video signal | Analog 0.7 Vpp |
| Video termination impedance | 75 Ω |
| Horizontal scanning frequency | 29 kHz – 80 kHz |
| Vertical scanning frequency | 55 Hz – 75 Hz |
| Pixel clock | 135 MHz |
| Power supply | Switching Mode Power Supply, AC 100‑240 V, 50/60 Hz |
| Operating temperature | 0°C – 50°C |
| Weight | 5.5 kg |
| Dimensions (W×H×T) | 422 x 449 x 215 mm |
| View angle | 60° horizontal, 40° vertical |
| External connector | 15‑pin D‑type connector |
Store the LCD at 0°C – 40°C, humidity below 90 % RH, and avoid exposure to sunlight, high temperature or high humidity environments.