Panasonic DMR-EH50P, Руководство по обслуживанию

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1 Specifications 4
2 Safety precautions 5
2.1. General guidelines 5
2.2. Caution for fuse replacement 5
3 Prevention of Electrostatic Discharge (ESD) to Electrostatic
Sensitive (ES) Devices 6
4 Precaution of Laser Diode 7
5 How to replace the Lithium Battery 8
6 Handling the Lead-free Solder 8
6.1. About lead free solder (PbF) 8
7 Each Button 9
8 New Feature 11
8.1. Quick start function(REC) 11
9 Taking out the Disc from RAM-Drive Unit when the Disc
cannot be ejected by OPEN/CLOSE button 12
9.1. Forcible Disc Eject 12
9.2. When the Forcible Disc Eject can not be done. 12
10 Service Explorer 13
11 Self-Diagnosis and Special Mode Setting 16
11.1. Self-Diagnosis Functions 16
11.2. Special Modes Setting 17
11.3. Service Modes 19
12 Assembling and Disassembling 23
12.1. Disassembly Flow Chart 23
12.2. P.C.B. Positions 23
12.3. Top Cover 24
12.4. Front Panel 24
12.5. SD Card P.C.B. 24
12.6. Digital P.C.B. 24
12.7. DVD-RAM Drive 25
12.8. HDD 25
12.9. LED P.C.B. 26
12.10. Power P.C.B. 26
12.11. Rear Panel 27
12.12. Front (L) P.C.B. 27
12.13. Main P.C.B. 28
13 Service Fixture and Tools 29
14 Service Positions 29
14.1. Checking and Repairing of Power P.C.B. 29
14.2. Checking and Repairing of Digital P.C.B. 30
14.3. Checking and Repairing of Main P.C.B. 31
14.4. Checking and Repairing of DVD-RAM Drive 33
14.5. Checking and Repairing of HDD 34
15 Caution after replacing parts 35
15.1. After replacing the RAM Drive with new one 35
15.2. When the unit does not operate normally after replacing
the Timer Microprocessor or Main P.C.B. 35
16 Standard Inspection Specifications after Making Repairs 35
17 Voltage and Waveform Chart 36
17.1. Power P.C.B. 36
17.2. Main P.C.B. 36
17.3. Tuner P.C.B. 38
17.4. LED P.C.B. 38
17.5. P9001 Connector 39
17.6. Waveform Chart 40
18 Abbreviations 41
19 Block Diagram 43
19.1. Power Supply Block Diagram 43
19.2. Analog Video Block Diagram 45
19.3. Analog Audio Block Diagram 46
19.4. Analog Timer Block Diagram 47
20 Schematic Diagram 49
20.1. Interconnection Schematic Diagram
49
20.2. Main Power Schematic Diagram 50
20.3. Sub Power Section (Main P.C.B. (1/6)) Schematic
Diagram (P) 52
20.4. Main Net Section (Main P.C.B. (2/6)) Schematic Diagram
(M) 53
20.5. Video I/O Section (Main P.C.B. (3/6)) Schematic Diagram
(V) 54
20.6. Audio Main Section (Main P.C.B. (4/6)) Schematic
Diagram (A) 56
20.7. Timer Section (Main P.C.B. (5/6)) Schematic Diagram (T)
57
20.8. UART/IR Section (Main P.C.B. (6/6)) Schematic Diagram
(U) 59
20.9. Tuner Pack Schematic Diagram 60
20.10. SD Card Schematic Diagram 61
20.11. LED Schematic Diagram 62
21 Print Circuit Board 63
21.1. Power P.C.B. 63
21.2. Main P.C.B. 64
21.3. Tuner P.C.B. 69
21.4. SD Card P.C.B. 70
21.5. LED P.C.B. , Front (L) P.C.B. 71
22 Exploded Views 73
22.1. Casing Parts & Mechanism Section 73
22.2. Packing & Accessories Section 74
23 Replacement Parts List 75
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DMR-EH50 P / DMR-EH50 PC