Sony hst 303 service manual

Page 1

SRVICE MANUAL

Canadian Model
E Model

This set amplifier, tuner and
cassette deck section FH-303.

Model Name Using Similar
Mechanism

DXA-204, DXA-207

Tape Transport Mechanism

Type TOM-884F
SPECIFICATIONS

sw/mw tuner section: E model
System FM stereo, FM/AM superheterodyne tuner

SW 1 SW 2 MW
FM tuner section Tuning range 3.2 - 7.3 9.5 - 531 - 1,602
Tuning range 87.5 - 108 MHz MHz 21.75 kHz
Antenna Telescopic antenna MHZ
Antenna terminals Antenna Telescopic Built-in ferrite

75 ohms unbalanced antenna bar antenna

Intermediate frequency
10.7 MHZ
Usable sensitivity 30 W (SIN = 30 113/75 ohms)

MW tuner section : Canadian model

External antenna terminal

MW

Tuning range 530 - 1610 kHz

intermediate frequency 450 kHz

Usable Built-in

sensitivity ferrite bar - mill-2m
antenna Z)
External 30 W 30 V 100 EN
antenna (5 MHz) (15 MHz) (999 kHz)

Antenna Built-in ferrite bar antenna,
External antenna terminal
intermediate frequency 450 kHz
Usable built-in 250 yV/m
sensitivity antenna (1000 kHz)
5 2MB) external 100 "v
antenna (1000 kHz)

-Continued on next page-

Dolby noise reduction manufactured under license from
Dolby Laboratories Licensing Corporation.
DOLBY and the double-D symbol DI] are trademarks of
Dolby Laboratories Licensing Corporation.

BGMPACT Hl-DENSITY
CflMPflNENT SYSTEM

SONY.

Page 2

HST-303

Cassette Deck Section

Recording system

4»track 2-channel stereo
Frequency response
DOLBY NR OFF

TYPE II cassette (Sony UCX} 40 - 15,000 Hz (:3 dB)

TYPE I cassette (Sony HF-S) 40 - 14,000 Hz (:3 dB)

Wow and flutter 009% WRMS
10.3% (DIN)

Amp ' Section

Continuous RMS power output
Canada model
25 + 25 watts (4 ohms, at 1kHZ, 5% THD)
18 + 18 watts (4 ohms, 80 Hz , 20 kHz,
1% THD)
E model
, 25 + 25 watts (4 ohms, at 1 kHz, 5% THD)
Peak music power output (General area model)
240 watts (4 ohms)
DC operation with the ESP-88 (optional)
3.5W + 3,5W(1 kHZ, 5% THD)

Inputs
Sensitivity Impedance
PHONO (phono jacks) 2.5 mV 50 kilohms
CD/AUX (phone jacks) 450 mV 50 kilohms
MlC(minijack) 1 mV 600 ohms
Outputs
HEADPHONES Accepts headphones of 8 ohms or
(stereo miniiack) more
SPEAKER Accepts speakers of 4 to 16 ohms

MODEL IDENTIFICATION
-$peciflcation Label -

SONYTa MODEL No. HST-303
.-

WWW

E MODEL: AC: 110-120/220v240V~50/60Hz 65W
Canadian MODEL: AC: 120V ~60Hz 85W

SAFETY-RE LATED COMPONENT WARN INGI I

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
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.

TABLE OF CONTENS

Section Ltle %
Specification ........................................ 1
Model Identification ................................ 2
SECTION 1 GENERAL .......................... 3
1-1. Parts Identification .i 3
SECTION 2 MECHANICAL ADJUSTMENT ...... 4
SECTION 3 ELECTRICAL ADJUSTMENT tttttttt 4
SECTION 4 DIAGRAMS .......................... 8
4-1. Semicouductor Lead Layouts 8
4-2. Printed Wiring Boards 9
4-3. Schematic Diagram

~Tuner Section (E Model)- ................ 13
4-41 Schematic Diagram

-Tuner Section (Canadian Mode1)- .......... 14
4-5. Schematic Diagram ~Deck Sectioni 17
4-6. Schematic Diagram -Audio/Power Section- 18
SECTION 5 EXPLODED VIEWS 21
5-1. Case, Front Panel .......................... 21
5-2. Chassis 22
5-3. Mechanism Section 23
SECTION 6 ELECTRICAL PARTS LIST ...... 27

ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI

LES COMPOSANTS roENTiFiés PAR UNE MAROUE A
SUR LEs DIAGRAMMES SCHEMATIOUES ET LA LIsTE
DES PIECES soNT CRITiouEs Poun LA SECURITE
DE FONCTIONNEMENT. NE REMPLACEH CEs coM-
POSANTS ouE PAR DES PIEcEs s0Nv DONT LES
NUMERos SONT ooNNEs DANS CE MANUEL ou
DANS LES SUPPLEMENTS PUBLIES PAR SONY.