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Table Of Contents
Service Manual
COVER
1 INTRODUCTION TOP NEXT
2 GENERAL DESCRIPTIONS
2.1 SERVICE CAUTION ORDER NO. VRD0104020C2
2.1.1 REPLACING
IC7702/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
Video Cassette Recorder
TAPE
2.3 INTRODUCTION OF VIDEO
HEAD CLEANING
CASSETTE(POLISHING TYPE)
2.4 SELF-DIAGNOSIS RESULT
DISPLAY
q NV-SJ422F
3 ADJUSTMENT PROCEDURES
3.1 DISASSEMBLY METHOD
Z-MECHANISM
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 AI FUNCTION ADJUSTMENT
(AUTOMATIC)
3.3.6 VIDEO FREQUENCY
RESPONSE ADJUSTMENT
3.3.7 RECORDING CURRENT
ADJUSTMENT
3.3.8 LOCATION OF TEST
POINTS& CONTROLS
3.3.9 CIRCUIT BOARD LAYOUT
4 ABBREVIATIONS
5 INPUT/OUTPUT CHART
5.1 INPUT/OUTPUT CHART
FOR IC6001
5.2 TRUTH TABLE
6 WAVEFORM TABLE&
VOLTAGE CHART
6.1 WAVEFORM TABLE
6.2 VOLTAGE CHART
7 BLOCK DIAGRAMS
7.1 SYSTEM CONTROL& SERVO
BLOCK DIAGRAM
7.2 LUMINANCE&
CHROMINANCE BLOCK DIAGRAM
8 SCHEMATIC DIAGRAMS
8.1 POWER TRANSFORMER
SECTION IN MAIN SCHEMATIC