Sony str av 1020 avr service manual

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Extracted text from sony str av 1020 avr service manual (Ocr-read)

Page 1

US Model
Canadian Model

Photo : STR~AV1020

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC
DISTORTION

With 8-ohm load, both channels driven, from
20 - 20,000 Hz, rated 120 watts
(STR-AVi 020) or 100 watts (STR-AV920) per
channel minimum RMS power, with no more
than 0.008% total harmonic distortion from
250 milliwatts to rated output.

Other Spe ca 'ons

Ampliﬁer section

STR-AV1020 STFl-AVQZO

Frequency PHONO
response

RIAA equalization
curve i 0.5 dB

CD, DAT, +0
TAPE 10 Hz-70 kHz,,dE
VIDEO 1 .25"

Residual noise Less than 70;;V

Damping factor 50

(8 ohms, at 1 kHz)

Input PHONO MM 25 mV. 50 kilohms

sensitivity/ DAT,CD,

Amplifier section
STR-AV1020 STR-AVQZO
Dynamic 8 ohms, at 1 195 + 195 Mo + 140
power output kHz IHF watts watts
4 ohms, at 1 250 + 250 190 + 190
kHz IHF watts watts
Harmonic distortion at rated Less than Less than
output 0.008% 0.03%
Intermodulalion (IM) distortion Less than Less than
at rated output 0.008% 0.03%
Power output of surround/DRLC 10 + to watts

ampliﬁer (8 ohms, at 1 kHz)

impede? VIDEO 123' 50WV
TAPE 1'2 50 kllohms
S/N PHONO MM 87 dB
79 dB ' (A,2.5mV)
DAT. CD
105 dB
VIDEO 123* .,
TAPE 13 85 dB (AJSOmV)
Output DAT OUT
sensitivity/ TAPE our 12 13°31.
impedance VIDEO 1 ° ms
SPEAKERS Accepts seakers ol 4 - 16 ohms
HEADPHONES Accepts headphones of high
and low impedance
CENTER OUT' 6V, I kilohm
MUTING - ZDdB
DBFB +10 08(70 Hz)

Graphic Equalizer

7»band :10 dB at 63 Hz. V60
Hz, 400 H2. 1 kHZ, 2.5 kHZ.
6.3 kHz, and 16 kHz

- STR~AV1020 only
- ~ '79in

- Continued on page 2 -

FM STEREﬂ/FM-AM RECEIVER

SONY;

Page 2

STR-AV920/AV1020

AM tuner section
STR-AVi 020 | STR-AVQZO
Frequency range 530 - 1710 kHz (with 10 kHz interval)
531 - 1710 kHz (with 9 kHz interval)
Antenna Loop antenna
Usable sensitivity 50 dB/m (at 1,000 kHz or 999 kHz)
SIN 54 dB (3150 mV/m)
Harmonic distortion 0.5% (50 mV/m, 400 Hz)
Selectivity 35 dB (9 kHz). 40 dB (10 kHz)
Auto tuning threshold 55 dB/ m
General
srruvrozo | srn-Avazo
System Tuner PLL quartz-locked digital synthesizer
section system
Preampliﬁer Low-noise NF type equalizer
section
Power Purecomplimentary SEPP
amplilier
section
Power requirements 120 V A050 Hz
Power consumption USA model: USA model:
250 watts 210 watts
Canada model: Canada model:
520 VA 450 VA
AC outlets Two switched, total 100 watts
Dimensions 430 X 135 X 350 mm (w/h/d)
(17 X 5/. X 14/. inches)
Weight 10.3 kg (22 lb 11 oz) i 10.2 kg (22 lb 5 oz)

Supplied accessories

FM ribbon antenna (1)

AM loop antenna (1)

Remote commander (1)
RM-UZOi (STR-AV902)
RM-P301 (STR-AV1020)

External antenna connector (1)

(STR-AV1020 only)

Sony Batteries SUM-3(NS) (2)

Design and specifications subiect to change without notice.

TABLE OF CONTENTS

Video section
STR-AV1020 STFl-AVQZO
inputs VIDEO1,2,3: VIDE01,2:
1 Vp»p 75 ohms 1 Vp-p 75 ohms
Outputs VIDEO 1. MONITOR:
1 Vp-p 75 ohms
FM tuner section
STR-AVi 020 STR-AV920
Frequency range 87.5 -108.0 MHz
Antenna terminals 75 ohms 300 ohms.
coaxial balanced
75 ohms.
unbalanced
Sensitivity at 50 (18 18.3 dBl, 45 av (mono)
38.3 dBl, 45 V (stereo)
Usable sensitivity i1.zd€i,2nV(lHF)
S/N Mono 54 dB 80 dB
Stereo 78 dB 74 dB
Harmonic dis- Mono 0.2% 0.3%
°"'°" 3 HZ Stereo 0.4% 0.5%
lM distortiOn Mono 0.2 % 0.3%
Stereo 0.4% 0.5%
Separation 45 dB al 1 kHz
Frequency response 30 Hz - 15 kHz 30 Hz - 15 kHz
:Q5dB igde
Selectivity 65 dB at 300 60 dB at 400
kHz kHz
Capture ratio 1.2 dB
AM suppression ratio 60 dB 54 as
image response ratio 80 dB 70 :13
IF response ratio 90 d8 70 dB
Spurious response ratio 100 dB 80 dB
RF intermodulation at 800 kHz 65 dB 60 dB
Auto tuning Low 30 dB!
threshold High 50 dBl
Section itle Page
GENERAL
l-l. Connections"
12 Parts identification-w ......................... .. ............... 5
1-3. How to Use the Learning Function
(STR-AVIOZO only) .................. ........................ 7
ELECTRICAL ADJUSTMENTS H "8
Explanation of IC502 (,uPD75516) 10
DIAGRAMS
3-1. Semiconductor Lead Layouts ' ~ 12
3-2. Circuit Boards Location. - 12
3-3. Printed Wiring Boards
Main Section-«m- ............... ............... 14
3-4. Schematic Diagram
-Main Section- .......... 19

35. Schematic Diagram
-Surround/Graphic Equalizer Section
(STR.AV1020) _ ........................... ...'. ................ 23
3-6, Printed Wiring Boards
~Surround/Graphic Equalizer Section
(STR.AV1020) _. .............. ..... .................. . ....... .. 27
3-7. Printed Wiring Boards
«Surround/Graphic Equalizer Section
(STR,AV920) .. u... ............. . ........................ ..... 30

SEE

3.9.

3-10.
3-1 1.
3-12.
313.
EH4.

3-15.

Title Page

Schematic Diagram
~Surround/Graphic Equalizer Section
(STR-AVQZO) - """"
Schematic Diagram -Display Section-
Printed Wiring Boards -Display Section- ~~~~~~~~ 41
Printed Wiring Boards

~Tuner Section (STR-AVIOZO) -
Schematic Diagram

~43

-Tuner Section (STR-Avmzo) - ............. . ........ 45
Printed Wiring Boards
-Tuner Section (STR~AV920) - ~~~~~~~~~~~~~~~~~~~~~ 47

Schematic Diagram
-Tuner Section (STR-AV920) -
IC Block Diagrams-~

4. EXPLODED VIEWS

4-1. Front Panel
4-2. Chassis~~~~
5. ELECTRICAL PARTS LlST~- ~~~~~~~~~~~~~~~~~ -~

_2_