Pioneer sx-450 manual l\\ t, t r @

9 . 2 FM SECTION

1.Through 300 ohm dummy antenna, connect FM signal generator to the 300 ohm FM antenna terminals and set for 4OOHzat 100dB and IO0% modulation.

2.Connect AC voltmeter and distortion meter to TAPE REC jack (L or R).

3.Set FUNCTION switch to FM and MUTING switch to OFF.

4.Set FM signal generator and SX-450 dial indication to point A (90MHz).

5.Adjust T3 for maximum indication on AC voltmeter.

6.Adjust T5 lower core for center of scale indication on AM/FM meter.

7.Set FM signal generator for 9dB output and adjust T1 and T2 for maximum indication on AC voltmeter.

8.Set FM signal generator and SX-450 dial indication to point C (106MHz).

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9.Adjust TC3, then TC1 and TC2 for *u"i*rr- indication on AC voltmeter.

10.Again set FM signalgeneratorand SX-450dial indication to point A.

11.Adjust T3, then T1 and T2 for maximum indication on AC voltmeter.

12.Repeat steps 8-11 to eliminate variations in sensitivity at points A and C.

13.Adjust "t4 for maximum sensitivity.

14.Detune to noise only and adjust T5 lower core for center of scale indication on FM meter.

15.Set SX-450 dial indication to point B (98MHz) and adjust FM signal generator for center of scale indication on AM/FM meter.

16.Set FM signal generatoroutput to 60dB and adjust T5 upper core for minimum distortion.

17.Repeat steps14-16 eliminate variation in mini- J" 'a

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