Sony str vx 550 service manual

Page 1

5
3

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US Model
Canadian Model

P3367;

THE QUALITY OF

THIS MANUAL IS

THE BEST THAT
IS AVAILABLE

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:

With 8ohm loads, both channeis driven,
from 20 - 20,000 Hz; rated 50 watts per
channel minimum RMS power, with no more
than 0.008% total harmonic distortion from
250 milliwatts to rated output.

OTHER SPECIFICATIONS

Amplifier section
Cork/nus HMS power output

50 walls (4 ohms) at 20 Hz -20 kHz
Dynamic headroom L4 as ('78 IHF)
Harmcnrc distoruon Less than 0.008% at rated oquul

Less lhan 0,0I5J. (4 ohms)
Intermoduialron [IMI dlSIO'IICn
1 "I 7 *l = Less than 0.008. at rated output
Frequency response PHONO: FIIAA equalization curve :0.SdB
CDIAUX
TAPE-1. -2
VIDEO-1. 2
Less than 68 uv (5 ohms, network A)
50 (8 ohms. 1 kHz)

5Hz-100kHz :ema

Resrdual noise
Damping Iactor

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BY SHADING AND MARK

A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CR|T|CAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONYA

I
:MICHOFILM

Inputs
l . i s N I-rergnh't;
I _ Mal-mum Inpu! . ' u:

i l S:"S:..v\h : Iraeuang 3", I! my [ 3:12. in: 9\e
i I f 5 as
unono I :5er , so nanms uc mv 79 :B'

l 1, ta: 2 5 rrv
co Aux i : we as
up: i 2 . ran my I a) new; - as oE
VlDEO 2 l at ISO nw

' 7a IEIF
OuIDuIS REC OUT 1. 2. VIDEO OUT-1
Voltage 150 mv

Impedance 10 konms

SPEAKERS A. B
Accepts speakers 0! 4 I0 15 ohms (A or B)
Accepts speakers 0! 810 16 ohms. IA and
BI

HEADPHONES
Accepls low and hrgh impedance head~
phones
- Continued on page 2 -

ATTENTION AU CDMPOSANT AYANT RAPPORT
A LA SECURITE!

LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MAROUE - SUR LES DIAGRAMMES SCHEc
MATIOUES ET LA LISTE DES PIECES SONTCRITIOUES
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACEH CES CCMPOSANTS QUE PAR DES PIECES
SONY DONT LES NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY.

FM SIEREl/FM-AM RECEIVER
SONX
run

I
l

Page 2

_._I

STR-VXSS r j

sass l
firm at too Hz
TREBLC
:8 dB at 10 kHz
Eda/act at If: Hz

Tone controls

Low tiller

FM tuner section
Tuning range
Antenna terminals

87.5 MHz 08 MHZ
300 ohms. balanced
75 ohms. unbalanced
lnlermediale trequency 10.7 MHz
Sensitmty at SDdB quiet-no

17.3 am. 4 pV (mono)

383 car. 45 av (stereo)
Usable sensuivrty 11.2 dBt. 2.4V (IHF)
Signal-to-norse ratio 82 dB (mono). Z6d5 (stereo)
Harmonic o-stortion 0,08% (mono). 0.15% (sterec) at 1 kHz
IM distortion 0.08% (mono). 0.15% (stereo)
Separation 45 dB at 1 kHz
Frequency response 30 Hz 15 kHz EECB
Selectivity :3ch a: 5.. * ier
Capture ratio 1003
AM suppression rario 54 d6
Imag response ratio 80 dB
rF rQrse ratio 75 dB
Spur: s response ratio

TOdB
RF intermooulation 65GB (IHF)
Auto~tunmg threshold

Apprcr. 30 db"
AM tuner section
Tuning range 530 1.610 kHz (wrth the AM channel plan
selector set at 1C kHz)

4 my ~42: up: mmamsmwmfl

522 1.602 kHztw1th the AM channel plan
selector set at 9 kHz)

Ferrite-Dar antenna

External antenna termina

intermediate lreduency 450 kHz

Antenna

Usable sensrttvtty sous/m, terrrte-bar anter natal 1.000 kHz)
100w. external antenna (at 1000 kHz)
Signalvto-nmse ratio 54 dB tat 50 mVImI

Harmonic distortion 0.3% (at 50 mVIrn. 400 H.:)

Selecllvrly 4063 (10 kHz)
Auto-tuning threshold
50 dB/m
General
System Tuner section: Super neterodyne PLL

quartz-lock digital Sy lthe5izer system
Amplit. . Sect-on:
Low-noise NF type eoualizer amp
Pure-complementary SEPP
Power requirements 120 V ac. so Hz
Memory backup power: Lithium battery.
3 V dc
Power consumption USA model 160 watts
Canadian model: 195 watts

AC outlets Two switched (100 watts)
Drmensrons Appmx 430 . 105 . 350 mm twin/d)
(17 - aw. - 141:. inches)

nUUdlng protecting parts and controls

weight Approx Stu; (lbs 11 oz) net
, {warm 9 5 kg :2. tbs) m shipping cap
ton
Loda=0175v
-_3

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iEATURES

lhe STFr-VXSSO is a combined receiver and audiolvideo control
:enter. Its Direct Access Tuning system makes tuning easier than
iver. The receiver employs a quartz-lock digital synthesizer in its
itale-ot~the-art tuner section and a medium-high power output
implirier section which can be used in your home audio-video
intem.

chono amplilier stage. which employs an to. is caretully design.
0 to improve sterec separation and signal-to-noise ratio

iThe quartz-lock agital synthesizer system with a sophisticated
'hase Lo Loop (PLL) circuit allows extremely precise tuning or
M and A lations with an electronic digital readout on the ire
tuency display.

I new lc recently developed by Sony allows a high comparison tre-
erflCy thus eliminating the tendency for a low comparison tre-
uency. which had been previously generally employed. to slip into
he audio range and degrade the signalrto-noise ratio.

IVideo tapes can be cc pied from the video cassette recorder con~
lected to the VlDEO 2 jacks to the video cassette recorder con.
lected to the VIDEO 1 jacks; while video tapes are being copied.
lther program sources can be enjoyed.

tWhen copying video tapes. sound can be added to the video tape
rom another program source (compact disc. cassette tape. record.
tc).

the ASP (Audio Signal Processor) lC developed by Sony can
igitally control the tone. tiiter and volume settings. The ASP lC
lso permits electronic program source selection, Mechanical con-
'ols and switches have been practically eliminated from the tram
anel. In combination with a microcomputer and a non-volatile
iemory lC. the ASP to others greater flexibility - an Acoustic
unction, an ability to store and recall two sets or tonal adjust-
tents.

lThe volume can be adjusted with the slightest touch of the elec-
onically driven volume controi Psyt When the power is turned on.
ie volume is set to the minimum level and automatically increased
) the prevrously set level.

OFour methods at tuning are available :

Direct access tuning: FM or AM Stations can be directly tuned in
by inputting the station trequency with the DIRECT ACCESS
TUNlNG keyst

Sweep tuning' the FM or AM band is scanned automatically until
a signal is received. _._,

Memory preset tuning; a desired memorized station can be in-
stantly received by pressing the PRESET TUNING key.

Memory scan tuning: the FM or AM stations memorized in the
PRESET TUNING keys am scanned to quickly locate the
desired station.

orhe optional Remote Commander allows you to control all com-

ponents connected to the receiver from a distance.

oThe memorized stations are retained in memory by one lithium

battery when the power is turned oil. This back~up also allows the

last station tuned in to he held in memory.

MODEL tDENTIFICATION
- Specification Label -

SONY.

MODEL N0. STR-VX550

/ / / 4

t For Service Manuals Contact
MAURITFION TECHNICAL SERVICES

8 Cherry Tree Rd. Chinnor

Oxon OX9 4QY

Tel:- 01844-351694 Fax} 01844-352554

| Emails snoriries@mauritron.oo.ilt
l
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SERIAL NOl
MADE IN JAPAN

{ US Model 120 V 60 Hz 140W

Canadian Model 120 V 60 Hz 195W