1 Safety precautions 4
1.1. General guidelines 4
2 Prevention of Electrostatic Discharge (ESD) to Electrostatic
Sensitive (ES) Devices 5
3 Precaution of Laser Diode 6
4 Handling the Lead-free Solder 6
4.1. About lead free solder (PbF) 6
5 Each Button 7
6 New Feature 8
6.1. Quick start function(REC) 8
7 Taking out the Disc from RAM-Drive Unit when the Disc
cannot be ejected by OPEN/CLOSE button 9
7.1. Forcible Disc Eject 9
7.2. When the Forcible Disc Eject can not be done. 9
8 Service Explorer 10
9 Self-Diagnosis and Special Mode Setting 13
9.1. Self-Diagnosis Functions 13
9.2. Special Modes Setting 14
9.3. Service Modes 16
10 Assembling and Disassembling 20
10.1. Disassembly Flow Chart 20
10.2. P.C.B. Positions 20
10.3. Top Case 21
10.4. Front Panel 21
10.5. Digital P.C.B. 21
10.6. DV Jack P.C.B. 22
10.7. DVD-RAM Drive 22
10.8. Power P.C.B. 22
10.9. Rear Panel 23
10.10. Front (L) P.C.B. 23
10.11. Main P.C.B. 23
10.12. Tuner P.C.B. and Nicam Decoder P.C.B. 23
11 Service Fixture and Tools 24
12 Service Positions 24
12.1. Checking and Repairing of Power P.C.B. 24
12.2. Checking and Repairing of Digital P.C.B. 25
12.3. Checking and Repairing of Main P.C.B. 26
12.4. Checking and Repairing of DVD-RAM Drive 27
13 Caution after replacing parts 28
13.1. After replacing the RAM Drive with new one 28
13.2. When the unit does not operate normally after replacing
the Timer Microprocessor or Main P.C.B. 28
14 Standard Inspection Specifications after Making Repairs 28
15 Voltage and Waveform Chart 29
15.1. Power P.C.B. 29
15.2. Main P.C.B. 29
15.3. Tuner P.C.B. 31
15.4. Nicam Decoder P.C.B. 31
15.5. P9001 Connector 32
15.6. Waveform Chart 33
16 Abbreviations 34
17 Block Diagram 37
17.1. Power Supply Block Diagram 37
17.2. Analog Video Block Diagram 39
17.3. Analog Audio Block Diagram 40
17.4. Timer Block Diagram 41
18 Schematic Diagram 43
18.1. Interconnection Schematic Diagram 43
18.2. Power Supply Schematic Diagram 44
18.3. Main Net Section (Main P.C.B. (1/3)) Schematic Diagram
(M) 46
18.4. A/V I/O Section (Main P.C.B. (2/3)) Schematic Diagram
(AI) 48
18.5. Timer Section (Main P.C.B. (3/3)) Schematic Diagram (T)
50
18.6. Tuner Pack Schematic Diagram 52
18.7. Nicam Decoder Schematic Diagram 53
19 Print Circuit Board 55
19.1. Power P.C.B. 55
19.2. Main P.C.B. 56
19.3. Tuner P.C.B., Front (L) P.C.B. 61
19.4. Nicam Decoder P.C.B. 62
20 Exploded Views 63
20.1. Casing Parts & Mechanism Section 63
20.2. Packing & Accessories Section 64
21 Replacement Parts List 65
CONTENTS
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DMR-ES20EG / DMR-ES20EP / DMR-ES20EE
