Panasonic PV20DF25 - MONITOR/DVD COMBO, Service Manual

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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 51
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
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PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25- K