Sony STR-VX500 User manual

SERVICE MANUAL

MICROFILM

STR-VX500

E Model

FM STEREO/FM-AM RECEIVER

SPECIFICATIONS

This set is the tuner and amplifier

section in MHC-VX500.

Amplifier section

The following measured at AC 120, 220, 240V 50/60 Hz

DIN power output (Rated) (FRONT)

120 + 120W (6 Ωat 1kHz DIN)

Continuous RMS power output (Reference)

FRONT SPEAKER: 150 + 150W

(6 Ωat 1kHz, 10% THD)

Inputs MD/VIDEO 1 IN (phono jacks): voltage

450/250mV, impedance 47kΩ

AV INPUTAUDIO (phono jacks): voltage

250mV, impedance 47kΩ

MIX MIC 1/2 (phone jack): sensitivity 1mV,

impedance 10kΩ

Output MD/VIDEO 1 OUT (phono jacks): voltage

450/250mV, impedance 1kΩ

PHONES (stereo phone jack): accepts

headphones of 8Ωor more.

FRONT SPEAKER:

accepts impedance of 6 to 16Ω

REAR SPEAKER:

accepts impedance of 16Ω

SUPER WOOFER:

Voltage 1V, impedance 1kΩ

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 – 108.0MHz

Antenna terminals 75Ωunbalanced

Intermediate frequency 10.7MHz

AM tuner section

Tuning range MW: 531 – 1,602kHz (with the MW tuning

interval set at 9kHz)

530 – 1,710kHz (with the MW tuning

interval set at 10kHz)

SW: 5.95 – 17.90MHz (with the SW tuning

interval set at 5kHz)

Intermediate frequency 450kHz

Antenna AM loop antenna External antenna terminal

General

Power requirements 120V, 220V or 230 – 240V AC, 50/60Hz

Adjustable with voltage selector

Power consumption 290W

Dimensions (w/h/d) Approx. 288 ×205 ×375mm

Mass Approx. 8.6kg

Design and specifications are subject to change without notice.

STR-VX500

1414

4-4. SCHEMATIC DIAGRAM MAIN (1/2) SECTION • Refer to page 27 for IC Block Diagrams.

STR-VX500

1515

4-5. SCHEMATIC DIAGRAM MAIN (2/2) SECTION • Refer to page 13 for Printed Wiring Board.

• Refer to page 27 for IC Block Diagrams.

0.8

0.1

Q854

BN1F4M

Q855

2SC2958L

RELAY SWITCH

R857

22k

The components identified by mark !or dotted

line with mark !are critical for safety.

Replace only with part number specified.

STR-VX500

1616

4-6. SCHEMATIC DIAGRAM POWER AMP SECTION

The components identified by mark !or dotted

line with mark !are critical for safety.

Replace only with part number specified.

STR-VX500

1818

4-8. SCHEMATIC DIAGRAM DISPLAY SECTION • Refer to page 28 for IC Block Diagrams.

• Refer to page 12 for Waveform.

EA MODEL

MY,SP,IA,HK

MODEL

STR-VX500

2020

4-10. SCHEMATIC DIAGRAM SLIDING PANEL SECTION • Refer to page 28 for IC Block Diagrams.

4-13. SCHEMATIC DIAGRAM TRANS SECTION

STR-VX500

(Page 15)

T6.3AL

250V

2.5A

The components identified by mark !or dotted

line with mark !are critical for safety.

Replace only with part number specified.

4-14. SCHEMATIC DIAGRAM AV/MIC SECTION

STR-VX500

• Refer to page 28 for IC Block Diagrams.

• MAIN BOARD

IC300 LV1041M

4-16. IC BLOCK DIAGRAMS

2928

3736

7475

80 72 65

6970

STRIM

OSC

VOL

VCA VCA P

VCA VCA

VCA VCA VCA VCA

IEV

NOISE

GEN

NOISE

FILTER

BPF

CONTROL

BPF

V REF

STRIM

MODE

RECT

CUT

B NR

OUT

FILTER

DATA

DECODER

VOL/

MUTE

BPF

RECT

LOGIC

FF RECT

C MODE

LOGIC LOGIC

MASTER

VOL

PPB

MASTER VOL

VDD

PCM

CONTROL

SRAM

FILTER

R BPF2

R BPF1

S DC OUT

C DC OUT

R DC OUT

L DC OUT

V REF

VCC

C OUT

S OUT

R OUT

L OUT

GND

L IN

R IN

S IN

DELAY OUT

C VOL IN

DET

IREF

R OUT

R NF

L NF

L OUT

L BPF2

L BPF1

RT IN

LT IN

DC CUT

C MODE

GND

NS BPF1

OSC

NS BPF2

ENABLE

DATA

CLK

DATA

CLK

ENABLE2

VSS

OSC

VDD

A/D

D/A

DC CUT

VCC

C VOL OUT

C OP IN

GND

C OP NF

C OP OUT

VOL REF

S OP OUT

S OP NF

S OP IN

S VOL OUT

L RECT

DC CUT4

R RECT

DC CUT3

L BPF3

VLR TH

VLR 1

VLR 2

VCS 2

VCS 1

VCS TH

L+R RECT

DC CUT2

L-R RECT

DC CUT1

R DET3

OP VREF

S VOL IN

S OUT

DC CUT

IC401 M65850P

OSCILLATOR

1/2 VCC

AUTO

RESET

LPF1

MAIN

CONTROL

A/D

20KBIT

SRAM

LPF2

D/A

12 3 45 6 7

891014 13 12 11

CLOCK

RESET

D1 DO0

DO1

VCC

CLOCK

REF

OP2IN

OP2OUT

LPF2IN

LPF2OUT

LPF1IN

LPF1OUT

OP1OUT

OP1IN

CC1

CC2

GND

IC851 µPC1237HA

1 2 3 4 5 6 7 8

OVER LOAD DET

F/F

OFFSET DET

LATCH/

AUTORESET

MUTE

AC OFF

DET

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