Technics ST 9038 Service Manual

Page 2

CARACTERISTIOUES TECHNIQUES

(DIN 45 500)

Gamma da fréquences 87.6 ~107.9 MHz
Sensibilite (140 kHz déviafionl 1,2}1V (IHF, utilisablel
ZOMV UHF, Signal/brult 46 dB, 750., STEREO)
1.2)AV (Signal/Bruit 30 dB, 7SQI
1.1 )lV (Signal/Dru 26 dB, 75 OI
1.0/1V (Signal/bruit 20 (18.75 D)

Distorsion harmonique (male (1 kHz)

MONO 0.1%

STEREO 0.15%
Signal/Bruit (i4!) kHz déviation)

MONO 72dB(lHF,7SOBl

Résponse de fréquence 20 Hz ~ 18 kHz] +0.1 -0.5 dB

Sujet é changement sans préaris.

Courant portaur do dispersion

19kHz 760dB (-65 dB, IHF)
Equilibrage de Canaux (250 Hz " 6300 H1) $0.5 dB
Point Iirnite 10 UV
Largeur de bande

Amplificateur F1 250 KHZ

Démodulateur FM 1000 kHz

lmpédance d'anlenne 759 (asymétrique)

GENERALITES

Sélectivité alernée par-Canal 75 dB
Taux da capture 10 dB Tension de sortie 0 ~15 V
Rejet dimage (a 98 MHz) 95 dB Consummation 12 W
Rejet Fl (5: 98 MHz) 105 dB AIimentation 50 Hz/eo Hz,110 V/120 v/220 W240 v
Reiet de réponse pavsita (i: 93 MHz) 105 dB Dimensions (L x H x P1) 450 x 53 x 293 mm
Suppression AM 55 dB Poids 5.9 Kg
Séparation stéréophonlque
1 kHz 45 dB
10 kHz 35 :18
I LOCATION OF CONTROLS
STATION SELECTOR
fine - on
off A?
(muting Off)/\standard AUTO TUNING BUTTON
POWER (STEREO INDICATOR) (I) (l)
(stand by)
DISPLAY PANEL MANURALL TUNING
auto CON TR
A AUTO H|~BLEND
pink nOIse mono (ION J__OI:I_-)
MULTIPATH OUTPUT
CONTROL SIGNAL LINE FM ANTENNA .7
(759 COAXIAL) (HORIZ) (VERT)
VOLTAGE ADJUSTER OUTPUT LEVEL CONTROL I
(RIGHT)
POWER SWITCH(maIn) OUTPUT (LEFT)
The product for [XE] only
FM 40H MPX OUTPUT
CONTENTS '
LOCATION OF CONTROLS .................... SCHEMATIC DIAGRAM
How TO USE 16-FIN CONTROL SIGNAL LINE . . . . . (Counter Clock Circuitry) ................ 19 - 21
BLOCK DIAGRAM ..................... BLOCK DIAGRAM OF IC .................. 19-21 I
ALIGNMENT INSTRUCTIONS (ENGLISH) . . I . SCHEMATIC DIAGRAM I
I ALIGNMENT POINTS ................... (Programmable 8. Display Circuitry) .......... 22 - 24 I
I ANWEISUNGEN FUR ABGLEICHUNG (DEUTSCH) SCHEMATIC DIAGRAM
INSTRUCTIONS D' ALIGNMENT (FRANCAIS). (Tuner& Power Supply Circuitry) . . . . . . 25 - 27 I
I HOW TO REMOVE THE PRINTEDCIRCUIT BOARD. EXPLODED VIEWS ..................... 28 - 29 i
REPLACEMENT PARTS LIST (Electric Parts) ...... 12 - REPLACEMENT PARTS LIST I
PRINTED CIRCUIT BOARD (Counter Clock Circuitry) . . . 15 (Cabinet and Chassis parts) .................. 30 I
TERMINAL GUIDE .................... . 16 CHANGE FROM TENTATIVE SERVICE MANUAL . .31 I
PRINTED CIRCUIT BOARD (Front End Circuitry) . ACCESSORIES ..................... , 31
PRINTED CIRCUIT BOARD (Pra Scaler Circuitry) ...... 1e PACKINGS ...... . . 32 1
PRINTED CIRCUIT BOARD MOUNTING IN AN ELA-STANDARD RACK. . . .32 I
(Power Supply, Tuner, Programmable &

Display circuitry) ..................... 17 - 1s

USE OF UNIT"FEET" ................... I Z .32 I