JVC SR-VS30E/EK Manuals

Manuals and User Guides for JVC SR-VS30E/EK. We have 1 JVC SR-VS30E/EK manual available for free PDF download: Service Manual

JVC SR-VS30E/EK Service Manual (136 pages)

Brand: JVC | Category: VCR | Size: 9.65 MB

Table of Contents
3
Important Safety Precautions
4
Disassembly
7
How to Remove the Major Parts
7
Introduction
7
How to Read the Disassembly and Assembly
7
Disconnection of Connectors (Wires)
7
HOW to REMOVE the MAJOR PARTS <COM Section
8
Disassembly Flow Chart
8
Disassembly/Assembly Method <COM Section
8
HOW to REMOVE the MAJOR PARTS <VHS Section
10
Disassembly Flow Chart
10
Disassembly/Assembly Method <VHS Section
10
HOW to REMOVE the MAJOR PARTS <DV Section
12
Disassembly Flow Chart
12
Disassembly/Assembly Method <DV Section
12
Connection
14
Service Positions
16
Requirement PATCH CORDS
16
Service Position <VHS SIDE
16
Service Position <DV FOIL SIDE
16
Service Position <DV COMPONENT SIDE
17
Jig RCU Mode
17
Setting the Jig RCU Mode
17
Mechanism Service Mode
18
How to Set the "MECHANISM SERVICE MODE
18
Emergency Display Function
19
Mechanism Adjustment (Vhs)
23
Before Starting Repair and Adjustment
23
Precautions
23
Checking for Proper Mechanical Operations
23
Manually Removing the Cassette Tape
23
Jigs and Tools Required for Adjustment
24
Maintenance and Inspection
25
Replacement of Major Parts
28
Before Starting Disassembling (Phase Matching between Mechanical Parts)
28
How to Set the Mechanism Assembling Mode
28
Cassette Holder Assembly
28
Pinch Roller Arm Assembly
30
Guide Arm Assembly and Press Lever Assembly
30
Loading Motor
30
Capstan Motor
31
Pole Base Assembly (Supply or Take-Up Side)
31
Rotary Encoder
32
Clutch Unit
32
Change Lever Assembly, Direct Gear, Clutch Gear and Coupling Gear
32
Link Lever
33
Cassette Gear, Control Cam and Worm Gear
33
Control Plate
33
Loading Arm Gear (Supply or Take-Up Side) and Loading Arm Gear Shaft
34
Take-Up Lever, Take-Up Head and Control Plate Guide
35
Capstan Brake Assembly
35
Sub Brake Assembly (Take-Up Side)
35
Main Brake Assembly (Take-Up Side), Reel Disk (Take-Up Side) and Main Brake Assembly (Supply Side)
35
Tension Brake Assembly, Reel Disk (Supply Side) and Tension Arm Assembly
36
Idler Lever, Idler Arm Assembly
36
Stator Assembly
36
Rotor Assembly
36
Upper Drum Assembly
37
Compatibility Adjustment
38
Mechanism Adjustment (DV)
42
Preparation
42
Precautions
42
Tools Required for Adjustments
42
Disassembly and Assembly Procedures
42
Screws and Washers Used in Disassembly/Assembly of the Mechanism Assembly
42
Disassembly/Assembly of the Mechanism Assembly
43
Introduction
43
Mechanism Modes
43
Mechanism Timing Chart
45
Mechanism Assembly/Disassembly Procedure Table
46
Disassembly/Assembly
48
List of Procedures for Disassembly
56
Mechanism Phase Check/Adjustment
57
Mechanism Disassembly/Assembly Sheet
58
Positioning the Tension Pole
60
Compatibility and Error Rate Adjustments
61
Preparation
61
Adjustment
61
Linearity Adjustment
62
PB Switching Point Adjustment
62
Error Rate Adjustment
62
Error Rate Measuring Method
62
Electrical Adjustment (Vhs)
64
Precaution
64
Required Test Equipments
64
Required Adjustment Tools
64
Color (Colour) Bar Signal,Color (Colour) Bar Pattern
64
Switch Settings and Standard Precautions
64
EVR Adjustment
64
Servo Circuit
65
Switching Point
65
Video Circuit
65
Slow Tracking Preset
65
D/A Level
65
EE Y/PB y (S-VHS/VHS) Level
65
REC Color (Colour) Level
66
Video EQ (Frequency Response)
66
AUTO PICTURE Initial Setting
67
DV EE y Level
67
Audio Circuit
67
Audio REC FM
67
Syscon Circuit
67
Timer Clock
67
Electrical Adjustment (DV)
68
Preparation
68
Precautions
68
Equipment Required for Adjustment
68
Tools Required for Adjustments
68
Setup
68
Charts and Diagrams
99
Notes of Schematic Diagram
99
Circuit Board Notes
100
Board Interconnections
101
Switching Regulator Schematic Diagram
102
Main (Video/Audio) Schematic Diagram
103
Main (Vhs Syscon) Schematic Diagram
104
Main (Tuner) Schematic Diagram
105
Main (Video I/O&Sub Empha) Schematic Diagram
106
Main (Audio I/O) Schematic Diagram
107
Main (Connection) Schematic Diagram
108
Digital/2M Schematic Diagram
109
Terminal (S-Sub) Schematic Diagram
110
Terminal (I/O) Schematic Diagram
111
Demodulator Schematic Diagram
112
Power Sw, Sw/Display and Jog Schematic Diagrams
113
DV Msd Schematic Diagram
114
DV Main Schematic Diagram
115
DV I/O Schematic Diagram
116
DV V out Schematic Diagram
117
DV Pre/Rec Schematic Diagram
118
DV Reg Schematic Diagram
119
DV Audio Ad/Da Schematic Diagram
119
Main(On Screen) Schematic Diagram
120
Remote Control Schematic Diagram
120
Switching Regulator Circuit Board
121
Main Circuit Board
122
Demodulator Power Sw, Sw/Display and Jog Circuit Boards
124
Terminal Circuit Board
125
DV Main Circuit Board
127
Waveforms
128
Voltage Charts
129
Fdp Grid Assignment and Anode Connection
130
Cpu Pin Function
130
System Control Block Diagram (Vhs)
131
Video Block Diagram(Vhs)
132
Audio Block Diagram (Vhs)
134

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JVC SR-VS30E/EK Service Manual (136 pages)

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