Sony hstd 20 service manual

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SERVICE MANUAL

. HST-D20 is the STEREO DECK
RECEIVER in XO-DZO.

E Model

SPECIFICATIONS

System FM stereo, FMIAM superheterodyne tuner
FM tuner section
Tuning range 87.5 to 108 MHz
Antenna terminals 75 ohms unbalanced
SWIMW tuner section
SW1 SW2 MW
Tuning range 32 to 73 MHz 9.5 to 2175 531 to 1,802
MHz kHz
Antenna AM Loop antennaI
External antenna terminal
Intermediate 450 kHz
frequency
Amplifier section
Peak music power output:
360 W (with the 53-020 speaker system)
In puts
Jacks Jack type Sensitivrty Impedance
CD IN Phono 200 mV 47 konms
PHONO lN Phono 5.5 mV 50 1(0th

m1 a"... Um DECK A: xo-mocD/mos

mu" ch-"3' men a: XO-DlOCD/DIOS

Tape Transport DECK A: Tom-mums

mum TV!" DECK B: TCM-YM47W38
Cassette deck section

Recording system 4-track 2-channel stereo
Frequency response DOLBY NR OFF
With TYPE [I cassette (Sony UX-S)
60 Hz to 14 kHz (:3 (13)
With TYPE I cassette (Sony HF-S),
60 Hz to 13 kHz (:3 GE)

General
Power requirements 110 to 120V or 22010 240V, adjustable, 50/60Hz

Power consumption 120W

Weight Approx. 75 kg (16 lb 9 oz) net
Dimensions Approx 355 X 295 x 350 mm (w/h/d)
(14 MW. x 137/: inches)

Accessories supplied
Remote commander (1)
Batteries Sony SUM-3 (NS) (2)
AM loop antenna (1)

FM antenna wire

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.

DOLBY and the double-D symbol D0 are trademarks of
Dolby Laboratories Licensing Corporation.

STEREO DECK RECEIVER
S O N Y9

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HST-D20

TABLE OF CONTENTS
Section Title Page

Specification..................... 1
Ceramic Filters (CFl and CFZ) . . . . . ..... z
SECTION1.GENERAL............. 3
Location and function of Parts and Controls
SECTION2.DIAGRAMS...............5
2-1. Printed Wiring Board (1)
(Dmersection) ..............5
2-2. Schematic Diagrams (1)
(Tuner section) . . . .
2-3. Printed Wiring Board (2)
(Amp and power-supply section) . . . . . 11
2-4. Schematic Diagrams (2)

(Amp and power-supply section) . . . . . 15

2-5. PM FRONT END Schematic Diagram . . 19
SECTION 3. EXPLODED VIEWS . . . . . . . . . . 20
SECTION 4. ELECTRICAL PARTS LIST . . . . . . 23

MODEL IDENTIFICATION
- Specification Label -

SONY; MODEL Moi HST-D20

STEREO DECK RECEIVER SYSTEM
AC: 110/120/220/240vro 50/60 Hz 120 w

SAFETY-R E LATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BV MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BV SONY.

Note-1 on Ceramic Filter (CPIOl, 102) Replacement
and Diode D364, 365 Connection.

This set employs two ceramic filters (CF101, 102)
which should have the same color marking to
Therefore FM XF
offset adjustment by diodes (D364, 365) connection is

identify their center frequency.

necessary to match the center frequency of the
ceramic filters used with FM intermediate frequency.

Color marking

CFIOI, 102

0: connect
X: not connect

D354, 365
connection PM intermedi-
ate frequency
Color Center fre- A '13 (m2)

mark quency (Mu) (D364) (D365)

Ceramic filter

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
Ceramic filters of
same center frequency, i.e., of same color coding
should be used for CF101 and CF102.

When replacing the ceramic filters, perform the FM
Discriminator Adjustment.

three types as shown above.