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5. ELECTRICAL ADJUSTMENT
Notes:
¢
Before the adjustment:
Electrical adjustments discussed here are often required after replacement of electronic components and mechanical
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
© Audio signal generator
© AC milli-voltmeter
© DC voltmeter
© Frequency counter
© Blank video cassette tape
© Alignment tape (VROCPSV)
© Screwdriver for adjustment
© Alignment tape (VROATSV)
© Colour bar signal generator
© Alignment tape (VROCBFFS)
XX Servicing precations
When the IC804 (E2P ROM} has been replaced, make the following reprogramming. Depending on models, the IC804
(E7PROM) 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
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