JVC HR-S7700MS Manuals

Manuals and User Guides for JVC HR-S7700MS. We have 1 JVC HR-S7700MS manual available for free PDF download: Service Manual

JVC HR-S7700MS Service Manual (97 pages)

Brand: JVC | Category: VCR | Size: 20.52 MB

Table of Contents
2
Important Safety Precautions
3
Disassembly
6
Disassembly Flow Chart
6
How to Read the Disassembly and Assembly
6
Disassembly/Assembly Method
6
Service Position
9
How to Take out the Mechanism and Main Board Assemblies
9
Precautions for Cassette Loading in the "SERVICE POSITION
10
Cassette Loading and Ejection Methods in the "SERVICE POSITION"(See Fig. 1-4-3)
10
Mechanism Service Mode
10
How to Set the "MECHANISM SERVICE MODE
10
Emergency Display Function
11
Displaying the Emergency Information
11
Clearing the Emergency History
11
Emergency Content Description
12
Emergency Detail Information 1
13
Emergency Detail Information 2
13
Syscon Circuit
15
Syscon CPU Pin Function (IC3001) 1/2
16
Syscon CPU Pin Function (IC3001) 2/2
16
Mechanism Adjustment
17
Before Starting Repair and Adjustment
17
Precautions
17
Checking for Proper Mechanical Operations
17
Manually Removing the Cassette Tape
17
Jigs and Tools Required for Adjustment
18
Maintenance and Inspection
19
Replacement of Major Parts
22
Before Starting Disassembling (Phase Matching between Mechanical Parts)
22
How to Set the Mechanism Assembling Mode
22
Cassette Holder Assembly
22
Pinch Roller Arm Assembly
24
Guide Arm Assembly and Press Lever Assembly
24
Audio Control Head
24
Loading Motor
24
Capstan Motor
25
Pole Base Assembly (Supply or Take-Up Side)
25
Rotary Encoder
26
Clutch Unit
26
Change Lever Assembly, Direct Gear, Clutch Gear and Coupling Gear
26
Link Lever
27
Cassette Gear, Control Cam and Worm Gear
27
Control Plate
27
Loading Arm Gear (Supply or Take-Up Side) and Loading Arm Gear Shaft
28
Take-Up Lever, Take-Up Head and Control Plate Guide
29
Capstan Brake Assembly
29
Sub Brake Assembly (Take-Up Side)
29
Main Brake Assembly (Take-Up Side), Reel Disk (Take-Up Side) and Main Brake Assembly (Supply Side)
29
Tension Brake Assembly, Reel Disk (Supply Side) and Tension Arm Assembly
30
Idler Lever, Idler Arm Assembly
30
Stator Assembly
30
Rotor Assembly
30
Upper Drum Assembly
31
Compatibility Adjustment
32
Checking/Adjustment of FM Waveform Linearity
32
Checking/Adjustment of the Height and Tilt of the Audio Control Head
33
Checking/Adjustment of the Audio Control Head Phase (X-Value)
33
Checking/Adjustment of the Standard Tracking Preset
34
Checking/Adjustment of the Tension Pole Position
34
Electrical Adjustment
36
Precaution
36
Required Test Equipments
36
Required Adjustment Tools
36
Color (Colour) Bar Signal,Color (Colour) Bar Pattern
36
Switch Settings and Standard Precautions
36
EVR Adjustment
36
Servo Circuit
37
Switching Point
37
Slow Tracking Preset
37
Video Circuit
37
D/A Level
37
EE y Level
38
PB y Level (S-VHS / VHS)
38
REC Color (Colour) Level
38
Video EQ (Frequency Response)
39
AUTO PICTURE Initial Setting
39
Audio Circuit
40
Audio REC FM
40
Pal/Secam Converter Circuit
40
Fh VCO
40
DEMOD Fo
40
Colour Difference Level
41
PAL Burst Position
41
Charts and Diagrams
64
Notes of Schematic Diagram
64
Circuit Board Notes
65
Board Interconnections
66
Video/Audio and Audio Erase Schematic Diagrams
67
System Control Schematic Diagram
68
Switching Regulator Schematic Diagram
69
Tuner Schematic Diagram
70
Connection Schematic Diagram
71
Digital Schematic Diagram [Hr-S6700Ms]
72
Digital/2M Schematic Diagram [Hr-S7700Ms]
73
Terminal Schematic Diagram
74
Demodulator Schematic Diagram
75
S-Sub Schematic Diagram
76
Sw/Display, Rec Safety, Jack and Shuttle/Play Schematic Diagrams [Hr-S6700Ms]
77
Sw/Display, Rec Safety, Jack and Jog Schematic Diagrams [Hr-S7700Ms]
78
P/S Converter Schematic Diagram
79
Secam Schematic Diagram
80
Main, Audio Erase, A/C Head and Loading Motor Circuit Boards
82
Digital Circuit Board [Hr-S6700Ms]
83
Digital/2M Circuit Board [Hr-S7700Ms]
83
Terminal Circuit Board
83
Demodulator Circuit Board
84
S-Sub Circuit Board
84
Sw/Display, Rec Safety, Jack and Shuttle/Play Circuit Boards [Hr-S6700Ms]
85
Sw/Display, Rec Safety, Jack and Jog Circuit Boards [Hr-S7700Ms]
86
P/S Converter Circuit Board
87
Secam Circuit Board
88
Remote Control Schematic Diagram
89
Fdp Grid Assignment and Anode Connection[Hr-S6700Ms]
90

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JVC HR-S7700MS Service Manual (97 pages)

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