Technics QUARTZ ST-S4 - Page 16

‘pamaaed
“on”
position.
8.
$17
or
21
:
FM
signal-
sgth
indicator
switch.
*(~]
marked
terminal
:
5V
or
OV
output
ch in ‘‘normal”’ position. normal «—+ super narrow 9. $18 : Allocation _ :ctor switch in “AM 9kHz/FM 0.05MHz step” position. *( mm] marked terminal : 5V or —26V output.
in “‘auto” position. auto -—» mono AM ¢ 4z/FM 0.05MHz —*AM 10kHz/FM 0.2MHz ; ;
10. $19 : Voltage selek.zor switch in ‘'240V" position. 13. Signal lines
@ 110V -—+ @ 120V + © 220V=—+ @ 240V —— FM signal |
|
11.
$20
:
FM
frequency-shift
switch
~~
Audio
frequency
signal
sua
a
/
ama
AM
signal
] 12. Indicated voltage values are the standard values for the unit measured by the DC wuum= Positive voltage lines
‘toh electronic circuit tester (high-impedance) with the chassis taken as standard. 14. Important safety notice:
Ich, SB 2ch, 10ch, $9 3ch, 11ch, Therefore, there may exist some errors in the voltage values, depending on the Components identified by A\ mark have special characteristics important f
12ch, S11—— 5ch, 13ch, $12 —— 6ch, veh internal impedance of the DC circuit tester. When replacing any of these components, use only manufacturer's specifiec
15ch,
S14
——
8ch,
16ch
*
Figures
in)
stand
for
DC
voltage
in
FM/AM
signal
reception
mode.
.
itch * Figuresing > stand for DC voltage in FM stereo signal reception mode.
* Figuresin®™ 4stand for DC voltage in FM (no signal) muting to on mode.
* Figures in€ —) stand for DC voltage with the band selectors circuit set at AM.
8 9 10 11 12 13 14
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fare) 2SA733. = MAI50
SWITCHING
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a
—
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clos
0.01
+4
16K
i
| Q104 0103, 203
2SC945 MAI5O
| ANO CIRCUIT
=
E ——
|
Ri27 (OK
signal AM OSC signal
narrow)
Cl2t 25V4.7
y +
RIl0 3.3K
C30! 16viI00
0204
AMRF wais5o
C302 K0.047
47
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SVDBB3l2
AM VARIABLE
CAPACITOR
R312
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C202 240P-———7>
RIS 27K
i R202
. > AI 14 IK
| 3 ee] |
———
C204 2Z0.0I
for DXA} and XU |
RI28 270K
R317 47K
LW FM AM A B c oO
Q401~~ 403 , 604
2SC945
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A PL 401 (6.3V 40mA)
QUARTZ IND.
Products for [XA] and [XL]
SUP 21750A
ae Se ae
$15 Ssié 17
FM
IF
band
FM
mode
|
FM
aM
F
$20 S21 sionelil
Preset-tuning selector selector
xy
oa be ese eA Anise