Sony str av 370x rec service manual

Page 2

STWFOWWM

08/25/2012
.. . 153 L181. 4.5 uv
Sensmvily at
50 dB (mono) _
. _ 35.3 dBi. 45 V
quieting
(stereo)
Usable 11.2 dBI. 2 11V (IHF) Loop antenna:
sensitivity 500 uV (at 1.000 kHz)
Signal-to- 78 dB (mono) 54 dB (at 50 mV/m)
noise ratio 70 dB (stereo)
Harmonic 0.3% (mono). 0.5% 0.5% (at 50 mV/m.
distortion (stereo) at 1 kHz 400 Hz)
Selectivity 60 dB at 400 kHz 40 dB at 10 kHz
Separation 45 dB at 1 kHz -
Frequency 30 Hz - 15 kHz
response 5? GE
General
System

Tuner section: PLL quart-locked digital
synthesizer system
Preanplifier section: Iow~noise NF type equalizer amp
Power amliiier section: quasimmplemenlary SEPP
Power requirements
AEP, Germany models: 220V AC. 50/30 Hz
UK model: 240V AC. 50/60 Hz
E model: 1 1D-120V. 220-230V. 240V AC, adjustable.
50/60 Hz
Power consumption
STR-AVZTOX: 60W
STR-AVSIOX: 1 15W
In standby condition: 5W (STRVAV370X)
AC outlets
One switched (100W) (STR»AV370X)
Dimensions
Approx. 430 X 122.5 X 300mm (wlhld)
(17 X 4 7l. X 11/. inches)
including projecting parts and controls
Weight
STR-AV270X: Approx. 5.5 kg (12 lb 2 oz)
STR-AV370X: Approx 6.5 kg (14 lb 5 oz)
Accessories supplied
FM wire antenna (1)
AM loop antenna (1)
Remote Commander (1) (STFl-AVSTOX)
Sony batteries SUM 3(NS) (2)

Design and specifications subject to change without notice.

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TABLE OF CONTENTS
Section M Page
Specifications .................................. 1
Model Identification ............................ 2
1. GENERAL
Location and Function of Controls ----------- 3
Receiving FM/AM Broadcasts ~~~~~~~~~~~~~ 4
2. ELECTRICAL ADJUSTMENTS ---------- 6
3. DIAGRAMS
3_1_ Block Diagram ........................... 7
3-2. Printed Wiring Boards - Main Section - ~ - - 11
3-3. Schematic Diagram - Main Section - ----- 15
3-4. Printed Wiring Boards - Tuner Section - - - 19
3-5. Schematic Diagram - Tuner Section - ----- 20
36. Explanation of IC301 (1.; PD75206) ---------- 23
4. EXPLODED VIEWS -------------------- 25
5. ELECTRICAL PARTS LIST ------------ 27

MODEL IDENTIFICATION
- Specification Labels -

STR-AV27OX
STR-AVSIOX

SONY. MODEL N0.
FM STEREO/FMEAM RECEIVER

Wm

V/////%

SERIAL No.
MADE IN JAPAN

AEP, Germany model: AC:
UK model: AC:
E model: AC:

220 - 230 V~50l60Hz
240 V ~50/60 HZ
120/220/240 V ~50/60 Hz
1 15 W

SAFETY-RELATED COMPONENT WARNINGII

COMPONENTS IDENTIFIED BV MARK A OR DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.