SECTION 2
SERVICING DIAGRAMS
1. CIRCUIT SYMBOLS AND
SUPPLEMENTARY EXPLANATION ..................................... 2-1
1-1. Solid Resistor Indication ..................................................... 2-1
1-2. Inductor Indication ............................................................. 2-1
1-3. Capacitance Indication ....................................................... 2-1
1-4. Waveform and Voltage Measurement .............................. 2-1
1-5. Precautions for Part Replacement ..................................... 2-1
2. BLOCK DIAGRAMS .................................................................. 2-2
2-1. Power Block Diagram ......................................................... 2-2
2-2. Inverter Block Diagram ...................................................... 2-3
2-2-1. Pin Assignments (microprocessor) IC701: KS88C6348 ... 2-4
2-3. Main Block Diagram ........................................................... 2-5
3. CIRCUIT DIAGRAMS ............................................................... 2-7
3-1. Power Supply Circuit Diagram .......................................... 2-7
3-2. Microprocessor Circuit Diagram ....................................... 2-9
SECTION 3
PARTS LIST
SAFETY PRECAUTION ................................................................. 3-1
NOTICE ............................................................................................. 3-1
ABBREVIATIONS ........................................................................... 3-1
1. Integrated Circuit (IC) ............................................................ 3-1
2. Capacitor (Cap) ....................................................................... 3-1
3. Resistor (Res) ........................................................................... 3-1
CONTENTS
SECTION 1
ADJUSTMENT PROCEDURES AND PART REPLACEMENT
1. REMOVAL .................................................................................. 1-1
1-1. Front Panel .......................................................................... 1-1
1-2. LCD Panel ............................................................................ 1-1
1-3. Inverter PC Board ............................................................... 1-2
1-4. Sensor PC Board ................................................................. 1-3
1-5. Handle .................................................................................. 1-3
1-6. LCD Rear Cover ................................................................. 1-3
1-7. Wall Hanging Plate ............................................................. 1-4
1-8. Bottom Cover ....................................................................... 1-4
1-9. Side Cover ............................................................................ 1-4
1-10.Rear Terminal Panel, Main PC Board .............................. 1-4
1-11.Front Net, Speaker .............................................................. 1-5
1-12.Switch PC Board ................................................................. 1-5
1-13.Hinge, Top Cover ................................................................ 1-5
3-3. Input Jack Circuit Diagram ............................................. 2-11
3-4. VPC3230 Circuit Diagram ............................................... 2-13
3-5. TTX&Caption Circuit Diagram ...................................... 2-15
3-6. MXIC Circuit Diagram .................................................... 2-17
3-7. Frame Buffer Circuit Diagram ........................................ 2-19
3-8. Panel Interface Circuit Diagram ..................................... 2-21
3-9. Sound Circuit Diagram ..................................................... 2-23
3-10.Wow Control Circuit Diagram ........................................ 2-25
3-11.Sound Amplifier Circuit Diagram ................................... 2-27
3-12.Pin Voltage ......................................................................... 2-29
3-13.Waveforms ......................................................................... 2-36
4. PC BOARDS .............................................................................. 2-41
4-1. Main PC Board .................................................................. 2-41
4-2. Switch PC Board ............................................................... 2-45
4-3. Sensor PC Board ............................................................... 2-45
2. GND LEAD WIRE CONNECTION DIAGRAM .................... 1-6
3. LOCATION OF MAIN PARTS ................................................. 1-7
4. TROUBLESHOOTING .............................................................. 1-8
4-1. No Power (No Video & No Sound) .................................... 1-8
4-2. No Video ............................................................................... 1-9
4-2-1. No Video (Sound O.K) .................................................... 1-9
4-2-2. No Video (Sound O.K) .................................................... 1-9
4-3. No Sound (Video O.K) ...................................................... 1-10
4. EXPLODED VIEWS ................................................................... 3-2
4-1. Packing Assembly ................................................................ 3-2
4-2. Chassis Assembly ................................................................ 3-3
5. PARTS LIST ................................................................................ 3-4
Summary of Contents for 15DL72
Page 1: ...LCD TV SERVICE MANUAL FILE NO 050 200224 15DL72 DOCUMENT CREATED IN JAPAN Oct 2002 ...
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