Panasonic NV-SD20EE Manuals

Panasonic NV-SD20EE Manuals

Manuals and User Guides for Panasonic NV-SD20EE. We have 1 Panasonic NV-SD20EE manual available for free PDF download: Service Manual

Panasonic NV-SD20EE Service Manual

Panasonic NV-SD20EE Service Manual (76 pages)

K-Mechanism

Brand: Panasonic | Category: VCR | Size: 4.88 MB

Table of Contents

Specifications
2
General Descriptions
3
Technical Information
3
Initialization of Channel Memory IC
3
Assembly of Capstan Stator Unit
4
Eject Operation
4
Service Information Display
4
Top View of Eject Operation
4
Mechanical Adjustment Procedure
6
Tension Post Position Adjustment
6
Back Tension Adjustment
6
P2 and P3 Posts Adjustment
6
Tape Interchangeability Adjustment
7
M4
7
M5
7
M6
7
Adjustment of P2 and P3 Posts
8
M7 Connect of Oscilloscope
8
M8
8
M9
8
M10
9
M11 Loading of Posts
9
M12 Spec. of Envelope Figure
9
Height Adjustment of A/C Head
9
Fine-Adjustment of A/C Head
10
When Moving the A/C Head up
10
M14
10
M16
10
Horizontal Position Adjustment of A/C Head
11
M17
11
M18
11
Location of Test Points & Controls
12
Main C.B.A.
12
Luminance & Chrominance Pack C.B.A.
12
Head Amp C.B.A.
12
Timer C.B.A.
13
Circuit Board Layout
13
Electrical Adjustment Procedures
14
Test Equipment
14
Preparation
14
How to Read Adjustment Procedures
14
Servo Section
15
PG Shifter Adjustment
15
Slow Tracking Adjustment
15
Luminance & Chrominance Section
16
Reverse Slow Tracking Adjustment
16
Recording Current Adjustment
16
Video Frequency Response Adjustment
17
Secam Killer Adjustment
17
E7
17
E8
17
Audio Section
18
Timer Section
18
Chrominance Recursive Adjustment
18
Bias Current Adjustment
18
Block Diagrams
19
System Control & Servo Block Diagram
19
Capstan Motor
19
Cylinder Motor
19
Schematic Diagrams
27
Power Schematic Diagra M
27
Sub Servo in Main Schematic Diagram
30
Capstan Servo Speed Loop
31
Cylinder Servo Speed Loop
31
Cylinder Servo Phase Loop
32
Sub Servo Ics DC Voltage Chart
33
Sub Servo Transistors DC Voltage Chart
33
System Control & Servo Ics DC Voltage Chart
34
System Control & Servo Transistors DC Voltage Chart
34
Main Signal Path in Rec Mode
41
Main Signal Path in Playback Mode
41
Input/Output Pack Schematic Diagram
48
Timer & Operation Schematic Diagram
50
Segment Control Signal
52
Grid Control Signal
52
Tune Control Signal
52
Head Amp Schematic Diagram
54
Video Main Signal Path in Rec Mode
55
Video Main Signal Path in Playback
55
TV Demodulator Pack Schematic Diagram
57
Video Signal Path
58
Audio Signal Path
59
Exploded Views & Parts List
60
Chassis Parts Section
60
Packing Parts Section
65
Electrical Replacement Parts List
66

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