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VC-G20SM/G200SM
VC-G201SM/G401SM
5. ELECTRICAL ADJUSTMENT
Notes:
• Before the adjustment:
Electrical adjustments discussed here are often required after replacement of electronic components and mechani-
cal parts such as video heads.
Check that the mechanism and all electric components are in good working condition prior to the adjustments,
otherwise adjustments can not be completed.
• Instruments required:
Blank video cassette tape
DC voltmeter
Screwdriver for adjustment
Colour TV monitor
Dual-trace oscilloscope
Alignment tape (VROCBZF)
Servicing precations
When the IC710 (E
2
PROM) has been replaced, make the following reprogramming. Depending on models, the
IC710(E
2
PROM) has been factry-adjusted for it’s memory function.
It’s therefore necessary to reprogram the memory function for the model in question.
Note that the servo circuit requires readjustments for the head switching point, slow and still modes.
• Location of controls and test points
TP201
Figure 5-1.
Содержание VC-G200SM
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Страница 104: ...104 VC G20SM G200SM VC G201SM G401SM SIGNAL FLOW BLOCK DIAGRAM SIGNALVERLAUF BLOCKSCHALTBILD ...
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Страница 107: ...107 VC G20SM G200SM VC G201SM G401SM EE Signal PB Signal REC Signal E E Signal Wiedergabe signal Aufnahme sihnal ...
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Страница 110: ...110 VC G20SM G200SM VC G201SM G401SM POWER CIRCUIT BLOCK DIAGRAM HAUPTSTROMKREIS BLOCKSCHALTBILD ...
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