1.DISASSEMBLY .Rear Cover Removal .................................................... 7 Vesa Bracket Assembly Removal ................................ 9 H1 Board Removal .................................................... 11 U1 Board Removal .................................................... 11 G1H Board Removal ................................................. 12 G3 and D1 Boards Removal ...................................... 13 DTT Shield, UT and BG1 Boards Removal ............. 14 D2 Board Removal .................................................... 15 Inlet, AC (with noise filter) Removal ........................ 15 Speaker, H3 and H4 Boards Removal ....................... 17 LCD Panel Removal .................................................. 18 2. WIRE DRESSING 2-1. (KLV-26V300A) ...................................................... 20 2-2. (KLV-32V300A) ...................................................... 22 2-3. (KLV-40V300A) ...................................................... 25 2-4. (KLV-46V300A) ...................................................... 29 3.SERVICE ADJUSTMENTS 3-1. How to enter Service Mode ....................................... 34 3-2. Signal Level Adjustment ........................................... 34 3-3. Gamma Adjustment ................................................... 36 3-4. White Balance Adjustment ........................................ 37 3-5. Panel Replacement ..................................................... 38 3-6. Board Replacement .................................................... 38 Section Title Page 4.DIAGRAMS Block Diagram ........................................................... 39 4-1-1. BG1 (1/3) Block Diagram .............................. 39 4-1-2. BG1 (2/3), H1, H3, H4 and UT Diagrams ..... 40 4-1-3. BG1 (3/3) and U1 Diagrams ........................... 42 Circuit Boards Location ............................................ 44 Schematic Diagram Information ............................... 44 4-3-1. BG1 Board — (001) ....................................... 45 4-3-2. BG1 Board — (002) ....................................... 46 4-3-3. BG1 Board — (003) ....................................... 48 4-3-4. BG1 Board — (004) ....................................... 50 4-3-5. BG1 Board — (005) ....................................... 52 4-3-6. BG1 Board — (006) ....................................... 54 4-3-7. BG1 Board — (007) ....................................... 56 4-3-8. BG1 Board — (008) ....................................... 58 4-3-9. BG1 Board — (009) ....................................... 60 4-3-10. G1H, G3, D1 & D2 Boards Schematic Diagram .................................................... 62 4-3-11. H1 Board Schematic Diagram ...................... 63 4-3-12. H3 Board Schematic Diagram ...................... 64 4-3-13. H4 Board Schematic Diagram ...................... 66 4-3-14. U1 Board Schematic Diagram ...................... 67 4-3-15. UT Board Schematic Diagram ..................... 69 Voltage Measurement and Waveforms ...................... 71 Printed Wiring Boards ............................................... 73 Semiconductors .......................................................... 81 5.EXPLODED VIEWS 5-1. Rear Cabinet and Stand Assy .................................... 83 5-2. Frame and Cover ........................................................ 85 5-3. Chassis-1 .................................................................... 87 5-4. Chassis-2 .................................................................... 88 5-5. H3, H4 Boards and Speaker ...................................... 90 5-6. Bezel Assy and LCD Panel ........................................ 91 5-7. Accessories and Packing Materials ........................... 92 6.ELECTRICAL PARTS LIST .............................................. 95