3 Alignments and Adjustments
3-1
3 Alignments and Adjustments
3-1 Service Instruction
1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation.
Check the basic characteristics such as height, horizontal and vertical sync.
2. Use the specified test equipment or its equivalent.
3. Correct impedance matching is essential.
4. Avoid overload. Excessive signal from a sweep generator might overload the front-end
of the TV. When inserting signal markers, do not allow the marker generator to distort
test result.
5. Connect the TV only to an AC power source with voltage and frequency as specified on
the backcover nameplate.
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure
that the power cord is disconnected before replacing any parts.
7. To protect aganist shock hazard, use an isolation transform.
Summary of Contents for LW15M23CP
Page 6: ...Memo 1 Precautions 1 4 ...
Page 23: ...4 Troubleshooting 4 3 WAVEFORMS 1 2 5 3 6 4 4 7 8 ...
Page 26: ...4 Troubleshooting 4 6 Memo ...
Page 29: ...5 Exploded View Parts List 5 3 5 2 LW17M24CP T0003 M0215 T0447 M0147 M0003 M0014 M0013 ...
Page 31: ...5 Exploded View Parts List 5 5 5 3 LW20M21CP T0003 M0215 M0147 M0014 M0013 M0014 ...
Page 63: ...7 Block Diagrams 7 1 7 Block Diagram ...
Page 64: ...Memo 7 Block Diagrams 7 2 ...
Page 66: ...8 Wiring Diagrams 8 2 Memo ...
Page 68: ...9 Schematic Diagrams 9 2 1 2 5 3 6 4 7 8 ...
Page 70: ...9 Schematic Diagrams 9 4 9 ...
Page 73: ...9 Schematic Diagrams 9 7 ...
Page 74: ...9 Schematic Diagrams 9 8 ...
Page 76: ...9 Schematic Diagrams 9 10 ...
Page 78: ...9 Schematic Diagrams 9 2 1 2 5 3 6 4 7 8 ...
Page 80: ...9 Schematic Diagrams 9 4 9 ...
Page 83: ...9 Schematic Diagrams 9 7 ...
Page 84: ...9 Schematic Diagrams 9 8 ...
Page 86: ...9 Schematic Diagrams 9 10 ...
Page 88: ...9 Schematic Diagrams 9 2 1 2 5 3 6 4 7 8 ...
Page 90: ...9 Schematic Diagrams 9 4 9 ...
Page 93: ...9 Schematic Diagrams 9 7 ...
Page 94: ...9 Schematic Diagrams 9 8 ...
Page 96: ...9 Schematic Diagrams 9 10 ...
Page 126: ...12 PCB Layout 12 2 12 1 2 Power board LW15M23CP ...
Page 127: ...12 PCB Layout 12 3 12 1 2 Power board LW17M24CP LW20M21CP ...
Page 128: ...12 PCB Layout 12 4 Memo ...
Page 129: ...13 Circuit Descriptions 13 1 13 Circuit Descriptions 13 1 Overall Block Structure ...
Page 130: ...13 Circuit Descriptions 13 2 13 2 1 MAIN BOARD POWER TREE 13 2 Partial Block Description ...
Page 132: ...13 Circuit Descriptions 13 4 ...
Page 133: ...13 Circuit Descriptions 13 1 13 Circuit Descriptions 13 1 Overall Block Structure ...
Page 134: ...13 Circuit Descriptions 13 2 13 2 1 MAIN BOARD POWER TREE 13 2 Partial Block Description ...
Page 136: ...13 Circuit Descriptions 13 4 ...