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
CONTENTS
SECTION 1
GENERAL DESCRIPTIONS AND PART REPLACEMENT
1. LOCATION OF PARTS ............................................................. 1-1
1-1. Buttons on the Front Panel, and
Terminals on the Side and the Back Panel ........................ 1-1
1-2. Remote Control ................................................................... 1-2
1-3. Location of Main Parts ....................................................... 1-3
2. REMOVAL .................................................................................. 1-4
2-1. Front Panel .......................................................................... 1-4
2-2. LCD Panel ............................................................................ 1-4
2-3. Inverter PC Board ............................................................... 1-5
2-4. Sensor PC Board ................................................................. 1-6
2-5. LCD Rear Cover ................................................................. 1-6
2-6. Wall Hanging Plate ............................................................. 1-7
2-7. Bottom Cover ....................................................................... 1-7
2-8. Side Cover ............................................................................ 1-7
2-9. Rear Terminal Panel, Main PC Board .............................. 1-7
2-10.Front Net, Speaker .............................................................. 1-8
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
2-11.Switch PC Board ................................................................. 1-8
2-12.Hinge, Top Cover ................................................................ 1-8
3. GND LEAD WIRE CONNECTION DIAGRAM .................... 1-9
4. TROUBLESHOOTING ............................................................ 1-10
4-1. No Power (No Video & No Sound) .................................. 1-10
4-2. No Video ............................................................................. 1-11
4-2-1. No Video (Sound O.K) .................................................. 1-11
4-2-2. No Video (Sound O.K) .................................................. 1-11
4-3. No Sound (Video O.K) ...................................................... 1-12
1. EXPLODED VIEWS ................................................................... 3-2
1-1. Packing Assembly ................................................................ 3-2
1-2. Chassis Assembly ................................................................ 3-3
2. PARTS LIST ................................................................................ 3-4
