Pioneer SK-909L Service Manual page 5

Portable stereo fm/sw/mw/lw radio cassette recorder
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SW TRACKING ADJUSTMENT
• Connection Diagram
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liiiii!iiliiii!fl
Tes
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NOTICE:
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Select C1 so that total capacity of 80 pF is attained from
the direction of the receiver jack.
Z:
Output impedance of the SSG.
To Adjust
mV Meter
['fl~;,~YJ,'
R@~
Pin Plu.g
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j
0
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OseitloscOlle
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1
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1
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1
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,
5?§d
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6
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Fig.4
Frequency of SSG
I
Variable Capacitor Position
Adjusting Point
Rernarks
. ­
l
1.
5.8 MHz (400 Hz, 30% modulation)
Maximum (turn the tuning knob
T7
5.8 MHz can be
output: level 40 ­
60 dB/m.
counterclockwise until lowend.)
received.
2.
18.5 MHz (400 Hz, 30% modulation)
Minimum (turn the tuning knob
1
Te8
I
18.5 MHz can be
output: level 40 ­
60 dB/m.
clockwise until high end.)
Teceived.
3.
Repeat (1) and (2) alternately and adiust: so that 5.8 ­
18.5 MHz are received.
4.
7 MHz (400 Hz, 30% modulation)
I
l
output: level 40 ­
50 dB/m.
I
Tuned to 7 MHz.
T6
Maximum output.
5.
17 MHz (400 HZ,30% modulation)
I
Tuned to 17 MHz.
TC5
Maximum output.
output: level 40 ­
50 dB/m.
. ­
I
6.
Repeat (4) and (5) alternately and confirm that they are as specified.
FM IF ADJUSTMENT
• Connection Diagram
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liiiiiiiiiiiiilltd
mV Meter
---§-'lINE OUT
l@Te.,m;nal
R@~
GND
Pm Plug
T3
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Center Meter
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Bel
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Fig.5
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4

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