Aiwa XR-EM20 Service Manual page 43

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<FM ADJUSTMENT>
For adjusting FM, do wiring function and connection as in the following.
7.TRACKING ADJUSTMENT
Requirement
Measuring equipment: millivoltmeter
Test point: TP8(Lch), TP9(Rch), GND
Adjustment point: L904
(1) Adjust the S.S.G. setting to 87.5KHz of 30% variation and reduce the output level
all the way (till a certain degree of is monitored through the oscilloscope).
(2) Adjust L904 until the value of the milivoltmeter reaches the maximum.
L903
There is no gap.
TE
L 13942296513
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Standard Signal Generator
GOOD
L903
L904
There is gap.
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8
SET
Lch
Rch
GND
NG
L904
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3 6 7 1 3
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2 9 9 4 2 8
TP
Connect to the respective
measuring equipment
AC MILLIVOLTMETER
TP8
GND
TP9
1 5 0 5 8 2 9 9 4
m
co
9 9
CH1 CH2
GND
2 8 9 9