Panasonic DMR-EH80VEG - Drive Unit Checking and Repairing; Checking and Repairing of DVD-RAM Drive

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16.4. CHECKING AND REPAIRING OF DVD-RAM DRIVE

1. Top Case

· Remove 4 Screws (A) on side and 3 Screws (B) on rear side

· Remove Top Case

2. DVD-RAM Drive

· Take out HDD FFC from HDD Angle sideways

· Remove 3 Screws (B)

· Lift up DVD-RAM Drive slightly and put it upside down

45

DMR-EH80VEG / DMR-EH80VEB

Table of Contents

Default Chapter2
- Default Chapter2
  - Specifications2
  - Table of Contents3
- Introduction5
- Safety Precautions5
  - General Guidelines5
- Prevention of Electrostatic Discharge (Esd) to Electrostatic Sensitive (Es) Devices6
- Precaution of Laser Diode7
- ABOUT LEAD FREE SOLDER (Pbf)7
- Prevention of Static Electricity Discharge8
  - Grounding for Electrostatic Breakdown8
    - Prevention8
    - Handling Precautions for Optical Pick-Up Unit8
- General Description9
- New Features10
  - Quick Start Function (Rec)10
- DVD) Taking out the Disc from Ram-Drive Unit When the Disc Cannot be Ejected by Button11
  - DVD) Forcible Disc Eject11
  - DVD) When the Forcible Disc Eject Can Not11
    - Be Done11
Vhs) Removing of Cassette Tape12
- Vhs) Removal by Compulsory Unloading12
- Vhs) Removal by Manual Operation12
- Vhs) Take out Cassette Tape Manually after13
  - Removing the Mechannism13
DVD) Service Explorer14
DVD) Self-Diagnosis and Special Mode Setting17
- DVD) Self-Diagnosis Functions17
- DVD) Special Modes Setting19
- DVD) Service Modes21
Vhs) Self-Diagnosis and Special Mode Setting27
- Vhs) Special Modes Setting27
- Vhs) Service Modes27
- Vhs) Self-Diagnosis Functions28
Assembling and Disassembling30
- Disassembly Flow Chart30
- Positions30
- Caution While Inserting Cassette Tape When Disassembling the Unit30
- Top Case31
- Front Panel31
- Front Jack P.C.b. & Fl Drive P.C.b32
- Power P.C.b32
- Rear Panel & Fan Motor33
- Vcr Mechanism Unit34
- Main P.C.b35
- Tuner / Converter /Decoder35
- DVD-Ram Drive35
- Digital P.C.b36
- Hard Disc Drive37
- Sd Card P.C.b39
- Digital I/F P.C.b39
5 14.16. Digital I/F P.C.b.40
Service Fixture and Tools40
Service Positions41
- Checking and Repairing of Power P.C.b41
- Checking and Repairing of Digital I/F P.C.b42
- Checking and Repairing of Main P.C.b44
- Checking and Repairing of DVD-Ram Drive45
- Checking and Repairing of Hard Disc Drive46
- Checking and Repairing of Sd Card P.C.b47
DVD) Caution after Replacing Parts48
- DVD) after Replacing the Ram Drive48
- DVD) after Replacing the Timer48
  - Microprocessor48
  - DVD) after Replacing Eeprom (Ic37502)48
Vhs) Caution after Replacing Parts49
- Adjustment Procedures after Replacing DD49
DVD) Standard Inspection Specifications after52
- Making Repairs52
Voltage and Waveform Chart53
- Waveform Chart59
Abbreviations60
- DVD60
- Vhs62
Interconnection Diagram67
Block Diagram69
- Power Supply Block Diagram69
- Digital I/F Regulator Block Diagram70
- System Control, Servo & Timer Block Diagram71
- Audio Block Diagram72
- Video Block Diagram73
- Digital I/F P.C.b. Block Diagram75
Schematic Diagram77
- Power Supply77
- DVD Output79
- Interface80
- Io / Tuner81
- Syscon / Servo / Timer Main82
- Vhs Audio83
- Video84
- Nicam Decoder85
- Front Jack86
- Fl Drive87
- Sd Card / DV in88
Printed Circuit Board89
- Power P.C.b. (Component Side)89
- Dmr-Eh80Veg / Dmr-Eh80Veb90
- Power P.C.b. (Solder Side)90
- Main P.C.b. (Component Side)91
- Main P.C.b. (Solder Side)92
- Digital I/F P.C.b. (Component Side)93
- Digital I/F P.C.b. (Solder Side)94
- Nicam Decoder P.C.b. (Vep07A51A / Vep07A51B)95
- Nicam Decoder P.C.b. (Vep07A51F)96
- Front Jack P.C.b97
- Fl Drive P.C.b98
- Sd Card P.C.b99
Exploded Views101
- Mechanism & Casing Parts101
- Front Panel Parts102
- Vhs Mechanism Parts103
- Packing & Accessories104
- Mechanism & Casing Parts105
Replacemnet Parts List105
- Vhs Mechanism Parts105
- Packing & Accessories Parts106
- Printed Circuit Boardsincluded in Main Pcb106
- Electrical Parts107
- Service Fixture and Tools118
- Block Diagram for Printing A4 Size119
Diagrams for Printing A4 Size119
- Schematic Diagramm for Printing A4 Size135
- Power P.C.b. for Printing A4 Size159
- Main P.C.b. (Component Side) for Printing A4163
- Size163
- Main P.C.b. (Solder Side) for Printing A4 Size165
- Other P.C.b.痴 for Printing A4 Size167

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