Electrical Adjustment - Sharp VC-G20SM Serviceanleitung

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:
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
Blank video cassette tape
DC voltmeter
Screwdriver for adjustment
Figure 5-1.
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VC-G20SM/G200SM
VC-G201SM/G401SM