JVC GR-AX640U, Service Manual

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TABLE OF CONTENTS
The following table indicate main different points between models GR-AX940U, AX940UC, AX840U, AX840UC, AX640U
and GR-AX640UC.
3. ELECTRICAL ADJUSTMENT
3.1 ELECTRICAL ADJUSTMENT ..................................................................................................................................... 3-1
3.2 ELECTRONIC VIEWFINDER (E. VF) ADJUSTMENT (For GR-AX640U/UC) ............................................................ 3-3
4. CHARTS AND DIAGRAMS
4.1 BOARD INTERCONNECTIONS ................................................................................................................................. 4-3
4.2 CPU SCHEMATIC DIAGRAM ..................................................................................................................................... 4-5
4.6 Y/C & AUDIO SCHEMATIC DIAGRAM ..................................................................................................................... 4-11
4.10 REGULATOR SCHEMATIC DIAGRAM .................................................................................................................... 4-19
4.11 LCD CTL SCHEMATIC DIAGRAM ............................................................................................................................ 4-22
4.12 MAIN CIRCUIT BOARD ............................................................................................................................................ 4-23
4.17 POWER SYSTEM BLOCK DIAGRAM ...................................................................................................................... 4-37
4.23 ELECTRONIC VIEWFINDER SCHEMATIC DIAGRAM (For AX640U/UC) .............................................................. 4-55
4.24 ELECTRONIC VIEWFINDER CIRCUIT BOARD (For AX640U/UC) ......................................................................... 4-57
5. PARTS LIST
5.6 ELECTRONIC VIEWFINDER ASSEMBLY <M4> [GR-AX640U/UC] ........................................................................ 5-19
5.5 ELECTRICAL PARTS LIST
E.VF BOARD ASSEMBLY (GR-AX640U/UC) <60> .................................................................................................. 5-18
VIEW FINDER Color Black/White
CASSETTE COVER Black Dark Glay
DC LIGHT
Q Q
– – – –
GR-AX940U GR-AX940UC GR-AX840U GR-AX840UC GR-AX640U GR-AX640UC
MODEL
ITEM
Note: Mark – is not used. Mark
Q
is used. Mark is same as left.