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11
ELECTRICAL ADJUSTMENT
(5) C RECORD CURRENT
v
CONNECTION METHOD
v
ADJUSTMENT PROCEDURE
1) Supply the Color Bar Signal to the VIDEO IN JACK, and set the VCR to the REC mode.
2) Connect the oscilloscope to TJ491 and trigger the scope with a composite sync signal at TJ302.
3) Adjust R491 until Y-FM record current is minimized.
4) Adjust R492 until color record current is 130
±
10mVp-p.
Adjustment Parts Check Point Measuring Equipment Test Tape Input Signal
R492 TJ491 Signal Gen. Oscilloscope Blank Tape Color Bar
REC-C
R492
R491
TJ491
TJ302
CH-1
Oscilloscope
CH-2
SIGNAL
GENERATOR
Burst
TJ491
130 10mVp-p