Panasonic PT-56LCX66, Service Manual, Page: 2 / 83

1 Safety Precautions 3
1.1. General Guidelines 3
1.2. Leakage Current Cold Check 3
1.3. Leakage Current Hot Check 3
1.4. UV-Precaution 3
2 Warning 4
2.1. Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 4
3 Service Navigation 5
3.1. Introduction 5
3.2. About Lead Free Solder (PbF) 5
4 Specifications 6
5 Location of Controls and Components 7
5.1. Operation Instructions 7
5.2. Replacement of Lamp 10
6 Service Mode 11
7 Troubleshooting Guide 21
7.1. Troubleshooting Hints for Block Level Repair 21
8 Disassembly and Assembly Instructions 32
8.1. Cabinet Section 32
9 Measurements and Adjustments 47
9.1. Adjustment Procedures 1 47
10 Maintenance 50
10.1. Cleaning Methods 50
11 Block Diagrams 51
12 Schematic Diagrams 61
12.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT
NOTES 61
12.2. INTERCONNECTION SCHEMATIC DIAGRAM 62
12.3. FRONT JACK / OPERATION SCHEMATIC DIAGRAM 63
12.4. POWER SWITCH / THERMISTOR 2 / COVER SWITCH
SCHEMATIC DIAGRAMS 64
12.5. VOLTAGE CHART 65
13 Printed Circuit Board 67
13.1. FRONT JACK / OPERATION P.C.B. / POWER SWITCH
P.C.B. / THERMISTOR 2 P.C.B. / COVER SWITCH
P.C.B. 67
14 Exploded Views 69
14.1. MAIN PARTS SECTION 69
14.2. BASE BODY SECTION 71
14.3. DISPLAY SECTION 72
14.4. SCREEN SECTION 74
14.5. PROJECTION SECTION 76
14.6. TV UNIT SECTION 77
14.7. PACKING PARTS AND ACCESSORIES SECTION 78
15 Replacement Parts List 79
15.1. REPLACEMENT NOTES 79
15.2. MECHANICAL REPLACEMENT PARTS LIST 80
15.3. OPTIONAL ACCESSORY REPLACEMENT PARTS LIST
81
15.4. ELECTRICAL REPLACEMENT PARTS LIST 81
CONTENTS
Page Page
2
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16