This manual provides detailed instructions for installing, operating and maintaining TCL HD4321 and HD5221 back‑projection color televisions. It covers safety warnings, model features, technical specifications, connection diagrams and basic to advanced operation procedures.
The guide also includes troubleshooting tips for common issues such as signal interference, as well as a packing list and warranty information. All steps are illustrated with diagrams of the TV’s exterior, control panel and connector layout. This manual is written in Chinese.
| Projection system | 3显伍管，3选坑 |
|---|---|
| Display tube | 7in high‑brightness monochrome tube |
| Power consumption | 200 W |
| Dimensions (HD4321) | 832 mm × 530 mm × 1255 mm |