Panasonic PV-20DF25

1 SAFETY PRECAUTIONS 3
1.1. GENERAL GUIDELINES
3
1.2. LEAKAGE CURRENT COLD CHECK
3
1.3. LEAKAGE CURRENT HOT CHECK
3
2 X-RADIATION
4
2.1. HORIZONTAL OSCILLATOR DISABLE CIRCUIT TEST
4
2.2. REPAIR PROCEDURES OF HORIZONTAL OSCILLATOR
DISABLE CIRCUIT
4
2.3. CIRCUIT EXPLANATION
4
2.4. LASER PRODUCT
5
2.5. PRECAUTION OF LASER DIODE
5
3 PREVENTION OF ELECTROSTATIC DISCHARGE (ESD) TO
ELECTROSTATICALLY SENSITIVE (ES) DEVICES
6
4 ABOUT LEAD FREE SOLDER (PbF)
7
5 SERVICE NOTES (PLEASE READ)
8
5.1. SERVICE NOTES
8
6 DISASSEMBLY/ASSEMBLY PROCEDURES
15
6.1. CABINET SECTION
15
7 ADJUSTMENT PROCEDURES
21
7.1. SERVICE FIXTURES AND TOOLS
21
7.2. ELECTRICAL ADJUSTMENT
22
7.3. TEST POINTS AND CONTROL LOCATION
29
8 SCHEMATIC DIAGRAMS
31
8.1. SCHEMATIC DIAGRAM AND CIRCUIT BOARD LAYOUT
NOTES
31
8.2. MAIN SCHEMATIC DIAGRAMS
32
8.3. DEFLECTION SCHEMATIC DIAGRAMS
39
8.4. OPERATION / CRT (Models : PV-20DF25 / PV-20DF25-
K) SCHEMATIC DIAGRAMS
40
8.5. CRT SCHEMATIC DIAGRAM (Models : PV-27DF25 / PV-
27DF25-K / PV-27DF5)
41
8.6. DVD MAIN / DVD SUB SCHEMATIC DIAGRAMS
42
8.7. INTERCONNECTION SCHEMATIC DIAGRAM
47
8.8. VOLTAGE CHART
48
9 CIRCUIT BOARD LAYOUT
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9.1. MAIN C.B.A.
51
9.2. OPERATION C.B.A.
52
9.3. DEFLECTION / CRT C.B.A.
53
9.4. DVD MAIN / DVD SUB C.B.A.
54
10 BLOCK DIAGRAMS
55
11 EXPLODED VIEWS
67
11.1. DVD SECTION
67
11.2. CHASSIS FRAME SECTION (1)
68
11.3. CHASSIS FRAME SECTION (2)
69
11.4. CHASSIS FRAME SECTION (3)
70
11.5. PACKING PARTS AND ACCESSORIES SECTION
71
12 REPLACEMENT PARTS LISTS
72
12.1. REPLACEMENT NOTES
72
12.2. MECHANICAL REPLACEMENT PARTS LIST
73
12.3. ELECTRICAL REPLACEMENT PARTS LIST
74
CONTENTS
Page Page
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PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25-K