Equipment information
JVC HR-J415EG Video cassette recorder
Manufacturer:
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Model:
HR-J415EG
Date:
1994
Category:
Group:
Description:
Manual Type:
Service Manual
Pages:
70
Size:
15.93 Mbytes (16707027 Bytes)
Language:
english
Revision:
Manual-ID:
82508
Date:
1994 06 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2017 05 15
MD5:
610cbfc5f5e9d59be4fc9fdc1165b543
Downloads:
1190
Information
ecautions INSTRUCTIONS 1. DISASSEMBLY
1.1
DISASSEMBLY ... 1-1
1.1.1 Top
cover ... 1-1
1.1.2 Front panel
assembly ... 1-1
1.1.3 Bottom
cover ... 1-1
1.1.4 FRONT board
assembly ... 1-1
1.1.5 SWITCHING REGULATOR board assembly ... 1-2
1.1.6 Cassette housing
assembly ... 1-2
1.1.7 PRE/REC board
assembly ... 1-2
1.1.8 Drum
assembly ... 1-3
1.1.9 Main deck
assembly ... 1-3
1.1.10 MAIN board
assembly ... 1-3
1.1.11 Cassette housing
installation ... 1-4
1.2 SERVICE
POSITION-1 ... 1-4
1.3 SERVICE
POSITION-2 ... 1-5
2. MECHANISM ADJUSTEMENT
2.1
PREPARATION ... 2-1
2.1.1
Precautions ... 2-1
2.1.2 Check without cassette
housing ... 2-1
2.1.3 Manual removal of loaded
tape ... 2-1
2.1.4 Test
equipment ...
2-2
2.2 MAIN MECHANISM
PARTS ... 2-2
2.2.1
Cleaning ... 2-3
2.2.2
Lubrication ... 2-3
2.3 INSPECTION AND
MAINTENANCE ... 2-3
2.3.1 Suggested servicing schedule for main TV Multimedia">Components .. 2-3
2.4 MAIN PARTS REPLACEMENT AND ADJUSTMENT ... 2-4
2.4.1 Stator
assembly ... 2-4
2.4.2 Rotor
assembly ... 2-4
2.4.3 Drum sub
assembly ... 2-5
2.4.4 Upper Drum
assembly ... 2.6
2.4.5 Tension arm
positioning ... 2-7
2.4.6 Pinch roller cam
position ... 2-8
2.4.7 Audio/control head
height ... 2-8
2.4.8 Loading arm and plate assembly
position ... 2-8
2.4.9 Reel deck
height ... 2-8
2.5 TAPE INTERCHANGEABILITY ADJUSTMENT ... 2-9
2.5.1 Height and azimuth adjustment of A/C
head ... 2-9
2.5.2 Horizontal Position adjustment of A/C
head ... 2-9
2.5.3 Playback
tracking ... 2-9
3. ELECTRICAL ADJUSTMENT
3.1 DECK SECTION
ADJUSTMENT ... 3-1
3.1.1
PRECAUTION ... 3-1
3.1.2 SWITCHING REGULATOR
CIRCUIT ... 3-2
3.1.3 SERVO
CIRCUIT ... 3-2
3.1.4 VIDEO
CIRCUIT ... 3-3
3.1.5 TIMER
CIRCUIT ... 3-5
3.1.6 TUNER
CIRCUIT ...
3-5
Section Title Page
4. CHARTS AND DIAGRAMS
SCHEMATIC DIAGRAM
NOTES ... 4-1
CIRCUIT BOARD
NOTES ...
4-2
4.1 BOARD
INTERCONNECTIONS ...
4-3
4.2 SYSCON/SERVO BLOCK
DIAGRAM ... 4-5
4.3 VIDEO BLOCK
DIAGRAM ...
4-7
4.4 AUDIO BLOCK
DIAGRAM ... 4-9
4.5 SWITCHING REGULATOR & REGULATOR SCHEMATIC DIAGRAMS
... 4-11
4.6 SWITCHING REGULATOR CIRCUIT
BOARD ... 4-13
4.7 TUNER SCHEMATIC
DIAGRAM ... 4-15
4.8 VIDEO SCHEMATIC
DIAGRAM ... 4-17
4.9 AUDIO SCHEMATIC
DIAGRAM ... 4-19
4.10 SERVO SCHEMATIC
DIAGRAM ... 4-21
4.11 SYSCON SCHEMATIC
DIAGRAM ... 4-23
4.12 MAIN CIRCUIT
BOARD ... 4-25
4.13 VIDEO UNIT SCHEMATIC
DIAGRAM ... 4-29
4.14 VIDEO UNIT CIRCUIT
BOARD ... 4-31
4.15 TERMINAL & MAIN(TERMINAL)SCHEMATIC DIAGRAMS ... 4-33
4.16 TERMINAL CIRCUIT
BOARD ... 4-35
4.17 FRONT SCHEMATIC
DIAGRAM ... 4-37
4.18 FRONT CIRCUIT
BOARD ...
4-39
4.19 PRE/REC SCHEMATIC
DIAGRAM ... 4-41
4.20 PRE/REC CIRCUIT
BOARD ... 4-43
4.21 DECK TERMINAL.CASSETTE HOUSING AND CAPSTAN MDA
SCHEMATIC
DIAGRAMS ...
4-45
4.22 DECK TERMINAL.CASSETTE HOUSING AND A/C HEAD CIRCUIT
BOARDS ...
4-46
4.23 REMOTE CONTROL SCHEMATIC DIAGRAM ... 4-47
4.24 RF TV Multimedia">Converter SCHEMATIC
DIAGRAM ... 4-48
4.25
WAVEFORMS ... 4-49
5. PARTS UST
5.1 PACKING AND ACCESSORY
<M1> ... 5-1
5.2 CABINET AND CHASSIS ASSEMBLY
<M2> ... 5-2
5.3 MECHANISM ASSEMBLY
<M4> ... 5-4
5.4 ELECTRICAL PARTS
UST ... 5-6
SWITCHING REGULATOR BOARD ASSEMBLY <01> ... 5-6
MAIN BOARD ASSEMBLY
<03> ... 5-6
VIDEO UNIT BOARD ASSEMBLY
<05> ... 5-9
TERMINAL BOARD ASSEMBLY
<06> ... 5-10
AUDIO/CONTROL HEAD BOARD ASSEMBLY <12> ... 5-12
FRONT BOARD ASEMBLY
<28> ... 5-12
PRE/REC AMP BOARD ASSEMBLY
<43> ... 5-13
DECK TERMINAL BOARD ASSEMBLY
<51> ... 5-14
CASSETTE HOUSING BOARD
<56> ... 5-14
6. TECHNICAL INFORMATION
6.1 SYSCON
CIRCUIT ... 6-1