Aiwa XR-EM70 Service Manual page 35

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<FM Adjustment>
3 7 63 1515 0
For adjusting FM, do wiring and connection as in the following.
Standard Signal Generator
7. Tracking Adjustment (FM)
Requirement
Measuring device: Millivoltmeter
Test Point: Lch, Rch, GND
Adjustment Point: L904
(1) Adjust the S.S.G setting to 98.0 MHz, 75 kHz variation and reduce the output level all the way.
(2) Adjust L904 until the value of millivoltmeter reaches the maximum.
(3) Adjust the S.S.G setting to 98.0 MHz, 75 kHz variation, and 66 dBuV for the output level.
(4) Check that the test point voltage is below 9 dBuV.
8. Auto Stop Check (FM)
Requirement
(1) Adjust the S.S.G setting to 98.0 MHz, 75 kHz variation, and 40 dBuV ± 10 dBuV for the output level.
(2) Activate the tuner search function, and check that there is reception of 98.0 MHz.
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8
SET
TP
Lch
Rch
Connect to the respective measuring device
GND
Q Q
3 6 7 1 3
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– 35 –
2 9 9 4 2 8
Lch
GND
Rch
1 5 0 5 8 2 9 9 4
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co
9 9
AC MILLIVOLTMETER
CH2
CH1
GND
2 8 9 9