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Kenwood KT-990D Service Manual page 32

Quartz synthesizer am-fm stereo tuner
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[el
uu
rm
"
4
AN
IVEIVE
(X13 - 575X-XX) (B/4)
TV SOUND
MUSIC/ NEWS
IDLE; OV
FULL
SCALE :3.5V
TUNE MODE
ACTIVE RECEPTION
1sV
So
7
OUT-OFF-TUNES @
MODE
: -17.5V
;
$i3
sia
ACTIVE
RECEPTION
won
=
ow
0.01
x10
C7 10p3s
ON: -17e5V
OFF : 306V
TUNE MODE (OV
OUT-OFF- TUNE
MODE:5V
20
C32
330P
RIZ6
100K
36
RB
220K
4.7K
Icl
1c!
(5/6)
(6/6)
ot
:HZS3.3N(B)
or RD3.3ES(B)
KT- 990D (kK) (2/2)
D2,4~6,9,11,17~ 27
1 1SS133 or ISSI76
(X13 -575X- XX)
IC 1 {pp PD4069UBC
Q1,4,5,9,1I~13
2 28C945(A)(0,P) or 28C2320(E,F)
CAUTION:
For continued safety, replace safety critical compon-
ents only with manufacture's recommended
parts (refer to parts
list). A Indicates safety critical components.
To reduce the risk of
electric shock, leakage-current or resistance measurements shall be
carried out (exposed parts are acceptably insulated from the supply
circuit) before tha appliance is returned to the customer.
DC voltages are as measured with a high impedance voltmeter dur-
ing reception of the FM broadcast signal (with a signal strength of
60 dB at the ANT terminal). Values may vary slightly due to varia-
tions between individual instruments or/and units.
Les tensions c.c. doivent étre mesurées avec un voltmétre a haute
impédance pendant {fa réception d'un signal de programme
FM
(avec une force de signal de 60 dB a la borne ANT).
Les valeurs
peuvent différer légarement du fait des variations inhérentes aux
appareils et aux instruments de mesure individuels.
Die angegebenen
Gleichspannungswerte
wurden
mit einem ho-
chohmigen
Spannungsmesser
bei Empfang
eines
UKW-Signals
(mit einer Feldstarke von 60 dB am Antennenanschlu&) gemessen.
Dabei
schwanken
die MeRwerte
aufgrund
von
Unterschieden
zwischen einzelnen Instrumenten oder Geraten u. U. geringfigig.
KT-990D

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