The LG 60PB6900 is a 60-inch Plasma TV featuring Full HD 1080p resolution, built-in digital and analog tuners, multiple HDMI inputs, USB connectivity, Smart TV capabilities with webOS platform, energy-saving technologies, and advanced picture processing. This service manual provides comprehensive technical information for qualified service technicians, including disassembly procedures, circuit diagrams, troubleshooting guides, and replacement parts information.
Main components: Plasma Display Panel, Main Board, Power Supply Board, Y-Sustain Board, Z-Sustain Board, Control Board, and T-Con Board.
| Component | Description |
|---|---|
| Main Board | Central processing unit with HDMI, USB, and network interfaces |
| Power Supply Board | Provides various DC voltages to all circuits |
| Y-Sustain Board | Controls vertical scanning and sustain operations |
| Z-Sustain Board | Manages sustain operations and energy recovery |
| Control Board | Handles user interface and input processing |
| T-Con Board | Timing controller for panel driving signals |
| Plasma Panel | 60-inch Full HD 1080p display with protective glass |
| Heat Sink Assembly | Thermal management for sustain boards |
| Back Cover | Protective enclosure with ventilation |
| Stand Assembly | Tabletop mounting support |
Follow proper ESD precautions and use appropriate tools.
WARNING! High voltages present in power supply and sustain circuits. Discharge capacitors before servicing.
Complete schematic diagrams for all major circuits including power supply, main board, sustain boards, and control circuits. Diagrams show component values, test points, and signal flow.
Detailed printed circuit board layouts showing component placement, trace routing, and connector locations for all major boards.
Systematic approach to diagnosing common issues including no power, no picture, abnormal colors, sound problems, and Smart TV functionality.
| Test Point | Normal Voltage | Tolerance |
|---|---|---|
| VS (Sustain Voltage) | 195V DC | ±5V |
| VA (Address Voltage) | 55V DC | ±3V |
| 5V STBY | 5.1V DC | ±0.2V |
| 12V | 12.2V DC | ±0.5V |
| 3.3V | 3.3V DC | ±0.1V |
| VSCAN | -190V DC | ±10V |
| VE | 95V DC | ±5V |
Authorized replacement parts with part numbers and compatibility information. Includes plasma panel, circuit boards, connectors, and mechanical components.
Procedures for updating TV firmware via USB or service port. Includes file preparation, update process, and verification steps.
Critical safety information for service technicians including high voltage warnings, ESD protection, proper grounding, and safe handling procedures for plasma panels.
DANGER! Lethal voltages present even when unplugged. Always discharge large capacitors before servicing.
| Error Code | Description | Solution |
|---|---|---|
| ER01 | Main Board Communication Error | Check ribbon cables, replace main board |
| ER02 | Power Supply Fault | Check VS/VA voltages, replace PSU board |
| ER03 | Y-Sustain Board Error | Inspect Y-buffer, replace Y-sustain board |
| ER04 | Z-Sustain Board Error | Check Z-sustain components, replace board |
| ER05 | T-Con Board Failure | Verify LVDS connection, replace T-con board |
| ER06 | Panel Temperature Error | Check thermal sensors, cooling system |
| ER07 | Audio Board Fault | Inspect audio circuits, replace audio board |
Service Support: LG Service Network - Contact authorized service centers only