Panasonic NV-MV20EG User Manual

mv20eg.html
Table Of Contents
COVER
1 INTRODUCTION
1.1 INTRODUCTION
1.2 ABOUT LEAD FREE SOLDER (PbF)
2 GENERAL DESCRIPTIONS
2.1 SERVICE CAUTION
2.1.1 REPLACING IC6002/EEPROM
2.1.2 CYLINDER UNIT REPLACEMENT
2.1.3 CHECKING OF MAIN C.B.A.
2.1.4 FLAT CARD CABLE INSTALLATION
2.2 REMOVAL OF CASSETTE TAPE
2.3 INTRODUCTION OF VIDEO HEAD CLEANING CASSETTE(POLISHING TYPE)
2.4 SELF-DIAGNOSIS RESULT DISPLAY
2.5 CAUTION FOR AC MAINS LEAD (NV-MV20EB/EBL)
3 ADJUSTMENT PROCEDURES
3.1 DISASSEMBLY METHOD
3.1.1 DISASSEMBLY FLOW CHART
3.1.2 DETAIL OF DISASSEMBLY METHOD
3.2 MECHANICAL ADJUSTMENT PROCEDURES
3.3 ELECTRICAL ADJUSTMENT PROCEDURES
3.3.1 TEST EQUIPMENT
3.3.2 VCR SETTING
3.3.3 ADJUSTMENTS
3.3.4 PG SHIFTER ADJUSTMENT(AUTOMATIC)
3.3.5 VHS FREQUENCY RESPONSE ADJUSTMENT
3.3.6 LOCATION OF TEST POINTS& CONTROLS
3.3.7 CIRCUIT BOARD LAYOUT
4 ABBREVIATIONS
5 INPUT/OUTPUT CHART
5.1 INPUT/OUTPUT CHART FOR IC6001
5.2 TRUTH TABLE (EG/EP MODEL)
5.3 TRUTH TABLE (EB/EBL MODEL)
6 WAVEFORM TABLE& VOLTAGE CHART
6.1 WAVEFORM TABLE
6.2 VOLTAGE CHART
7 BLOCK DIAGRAMS
7.1 SYSTEM CONTROL& SERVO BLOCK DIAGRAM
Service Manual
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ORDER NO. MABR0303005C2
Video Cassette Recorder
● NV-MV20EG
NV-MV20EB
NV-MV20EBL
NV-MV15EG
NV-MV15EP
Z-MECHANISM
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Panasonic NV-MV20EG Specifications

General

Brand	Panasonic
Model	NV-MV20EG
Category	VCR
Language	English

Summary

2 GENERAL DESCRIPTIONS

2.1 SERVICE CAUTION

Important safety precautions for servicing the unit.

2.1.1 REPLACING IC6002/EEPROM

Procedure for replacing the EEPROM IC6002.

3 ADJUSTMENT PROCEDURES

3.1 DISASSEMBLY METHOD

Steps and flowcharts for disassembling the unit.

3.3 ELECTRICAL ADJUSTMENT PROCEDURES

Procedures for electrical adjustments.

3.3.1 TEST EQUIPMENT

List of equipment required for electrical adjustments.

3.3.5 VHS FREQUENCY RESPONSE ADJUSTMENT

Adjusting the VHS frequency response.

8 SCHEMATIC DIAGRAMS

8.1 POWER TRANSFORMER SECTION IN MAIN SCHEMATIC DIAGRAM

Schematic diagram of the power transformer section.

8.2 POWER SUPPLY/ RF SECTION IN MAIN SCHEMATIC DIAGRAM

Schematic diagram of the power supply and RF sections.

8.4 SYSTEM CONTROL& SERVO SECTION IN MAIN SCHEMATIC DIAGRAM

Schematic diagram for system control and servo functions.

11 REPLACEMENT PARTS LIST

11.1 CHASSIS PARTS SECTION PARTS LIST

List of replacement parts for the chassis section.