This manual introduces the maintenance and maintenance methods of 21FS4RLX-ZV TV, including safety precautions, control description, specifications, adjustment instructions, SVC remote control, troubleshooting, circuit board, block diagram, exploded view, exploded view parts list, replacement parts list, SVC sheet, etc.
This service manual provides detailed safety precautions, specifications, adjustment procedures, and troubleshooting steps for the LG 21FS4RLX color television. It is intended for qualified service technicians and includes warnings about X‑ray radiation, isolation transformer use, and proper handling of high‑voltage components.
The document contains sections on control descriptions, printed circuit diagrams, exploded views, parts lists, and a service sheet, as well as detailed adjustment instructions for focus, purity, and convergence, helping technicians restore the TV to factory performance.
| Screen Size | Flat 21" |
|---|---|
| Power Voltage | AC110-240V, 50/60Hz |
| Operating Temperature | 0 ~ 45 °C |
| Storage Temperature | -20 ~ 60 °C |
| Relative Humidity | 65 + 10% |
Use an isolation transformer, do not modify the original design, replace special safety parts with recommended components, and follow X‑ray radiation warnings.
Perform a cold check by connecting a jumper across the AC plug prongs and measuring resistance to exposed metal parts; resistance should be between 1 MΩ and 5.2 MΩ.
The TV operates on AC 110‑240 V, 50/60 Hz (also AC 230 V, 50/60 Hz for EU models).