This is a service manual for ViewSonic VG800b, which introduces the detailed specifications, circuit diagrams, adjustment methods and repair steps of the display.
This Service Manual provides detailed technical information for the ViewSonic VG800b 18‑inch color TFT LCD monitor. It includes safety precautions, full specifications, electrical and mechanical characteristics, and a complete spare‑parts list for service technicians.
Key sections are the specifications table, circuit descriptions, adjustment procedures, mechanical assembly instructions, schematic diagrams, PCB drawings, and a parts list. The document also contains environmental limits, power‑supply details, and connector pin‑outs to aid troubleshooting and repair.
| Display size | 18.0 inches diagonal |
|---|---|
| Resolution | 1280 x 1024 (SXGA) |
| Brightness | 250 cd/m² (typ.) |
| Contrast ratio | 600:1 (max) |
| Power consumption (on mode) | 60 W typical |
| Power consumption (power‑save mode) | < 3 W |
| AC input voltage | 90‑264 V AC |
| DC input voltage | 12 V DC |
| Dimensions (W×H×D) | 436 mm × 462 mm × 181 mm |
| Weight (net) | 6.9 kg |
| Video input connector | 15‑pin mini D‑sub (analog RGB) |
| Audio connector | 3.5 mm stereo jack |
The monitor consumes about 60 W in normal on mode.
It uses a 15‑pin mini D‑sub for analog RGB video and a 3.5 mm stereo jack for audio input.
The monitor provides a maximum contrast ratio of 600:1.