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12
ELECTRICAL ADJUSTMENT
(6) Y RECORD CURRENT
v
CONNECTION METHOD
v
ADJUSTMENT PROCEDURE
1) Supply the Color Bar Signal to the VIDEO IN JACK.
2) After Inserting a Rec Tape, Rec in SP MODE.
3) Connect the oscilloscope to TJ491
and trigger the scope with a compos-
ite sync signal at TJ302.
4) Adjust R491 until Y-FM record current
is 500
±
10mVp-p. (Standard SYNC
Tip)
Adjustment Parts Checking Point Measuring Equipment Test Tape Input Signal
R491 TJ491 Signal Gen. Oscilloscope Blank Tape Color Bar
REC-Y
TJ302
CH-1
Oscilloscope
CH-2
SIGNAL
GENERATOR
TJ491
R491
500V 10mVp-p
TJ491