Sony st s 190 service manual

Page 2

ST-S190

TABLE OF CONTENTS Note on Ceramic Filter (CF1, 2, 3) Replacement.

Section T_ltle _}llg_e This set employs three ceramic filters (CH, 2, 3) which should
have the same color marking to identify their center frequency.
Therefore FM IF offset adjustment by * D707, * D708 mounted
is necessary to match the center frequency of the ceramic filters

Specification

1. GENERAL"" used with FM intermediate frequency
colormarkl'ng
2. ELECTRICAL ADJUSTMENTS """"""""""""""""" 4
3. DIAGRAMS
3-1. Printed Wiring Boards" 6 ("2 3)
3-2, Schematic Diagram ' 9
3-3. IC Block Diagrams" 15
................................................ O : Mounted
4. EXPLODED VIEW 16 x :not Mounted
5. ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 17 Ceramic mm Mount FM .
Intermediate
Color Center fre- * A at: B frequency
mark quency(MI-Iz) D707 D708 (MHZ)
White 10.750 0 X 10.750
Red 10.700 X X 10.700
Black 10.650 X 0 10.650
FM intermediate frequency is determined by the three types as
shown above, Ceramic filters of same center frequency, i. e., of
FEATURES same color coding should be used for CH, 2 and CF}.
The ST-S190 comes with a host of convenient features for your When replacing the ceramic filters, perform the FM Discriminator
listening pleasure. Among them are: Adjustment,
' Digitally controlled tuning
Gives you precise control when tuning in stations. MODEL IDENTIFICATION
, (Specification Label)
0 Automatic tuning for up to 30 stations
Allows you to store the frequencies of your most popular stations AEP Model
under two-character codes. To tune in any stored station, simply ( N
enter the appropriate code. SONY; MODEL N0. ST-Sl 90
0 Name assignment for up to 30 stations FM STEREO / FM-AM TU NER
Allows you to assign tour-letter names to frequencies so you can
more'quickly identity stations. AC 220-230V N 50 :OHZ
SERIAL NO.
\MADE iN JAPAN j
Germany, ltallan Model
K SONY. MODEL NO. sr-319o \
SAFETY-RELATED COMPONENT WARNINGII
FM STEREO / FM-AM TUNER
COMPONENTS IDENTIFIED BY MARK A on DOTTED AC 220-230V q, 50 / 60Hz
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE U
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR As SERIAL NO.
SHOWN IN THIS MANUAL on IN SUPPLEMENTS PUB- \MADE IN JAPAN J

LISHED BY SONY.