5.4kg Net (TX-17LA1F/P/V)7.4kg Net (TX-20LA1F/P/V)Note:1 Safety Precautions 31.1. General Guidelines 31.2. Touch-Current Check 32 Prevention of Electro Static Discharge (ESD) toElectrostatically Sensitive (ES) Devices 43 About lead free solder (PbF) 54 Self Check 65 Chassis Board Layout 76 Before servicing 86.1. Kind and location of the flexible cable 86.2. How to remove the connector 97 Disassembly for Service 107.1. Hinge cover and AV cable cover 107.2. Rear cover and Tilt base 107.3. AV terminal cover, EP jack cover, and Tuner cover 117.4. Shield plate 117.5. Inverter shield and Lock hinge (TX-20LA1F/P/V) 127.6. B-Board and K-Board 137.7. BL-Board, DG-Board and A-Board 137.8. V-Board 147.9. Speaker 147.10. LCD panel 158 Service Mode Function 168.1. How to enter SERVICE 1 168.2. How to enter SERVICE 2 168.3. Option Description 189 Conductor Views 219.1. A-Board 219.2. DG-Board (TX-17LA1F/P/V) 239.3. DG-Board (TX-20LA1F/P/V) 279.4. B, BL, K and V-Board 3110 Block and Schematic Diagram 3310.1. Schematic Diagram Notes 3310.2. Power Block Diagram 3410.3. Signal Block Diagram 36Design and Specifications are subject to change without notice.Weight and Dimensions shown are approximate.10.4. A-Board (1 of 3) Schematic Diagram 3810.5. A-Board (2 of 3) Schematic Diagram 3910.6. A-Board (3 of 3) Schematic Diagram 4010.7. DG-Board (1 of 6) Schematic Diagram (For TX-17LA1F/P/V) 4110.8. DG-Board (2 of 6) Schematic Diagram (For TX-17LA1F/P/V) 4210.9. DG-Board (3 of 6) Schematic Diagram (For TX-17LA1F/P/V) 4310.10. DG-Board (4 of 6) Schematic Diagram (For TX-17LA1F/P/V) 4410.11. DG-Board (5 of 6) Schematic Diagram (For TX-17LA1F/P/V) 4510.12. DG-Board (6 of 6) Schematic Diagram (For TX-17LA1F/P/V) 4610.13. DG-Board (1 of 5) Schematic Diagram (For TX-20LA1F/P/V) 4710.14. DG-Board (2 of 5) Schematic Diagram (For TX-20LA1F/P/V) 4810.15. DG-Board (3 of 5) Schematic Diagram (For TX-20LA1F/P/V) 4910.16. DG-Board (4 of 5) Schematic Diagram (For TX-20LA1F/P/V) 5010.17. DG-Board (5 of 5) Schematic Diagram (For TX-20LA1F/P/V) 5110.18. B-Board, BL-Board, K-Board and V-Board SchematicDiagram 5211 Parts Location & Mechanical Replacement Parts List 5311.1. Parts Location (1) 5311.2. Parts Location (2) 5411.3. Parts Location (3) 5511.4. Mechanical Replacement Parts List 5612 Replacement Parts List 5712.1. Replacement Parts List Notes 5712.2. Electrical Replacement Parts List 58CONTENTS Page Page2TX-17LA1F / TX-17LA1P / TX-17LA1V / TX-20LA1F / TX-20LA1P / TX-20LA1V