Sony STR-WX5 User manual

STR-WX5

E Model

Australian Model

Tourist Model

SERVICE MANUAL

FM STEREO/FM-AM RECEIVER

MICROFILM

SPECIFICATIONS

STR-WX5 is the tuner and amplifier

section in MHC-WX5.

Amplifier section

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

DIN power output (Rated) (FRONT)

120 + 120W (6 Ωat 1kHz DIN)

Continuous RMS power output (Reference)

150 + 150 W

(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 (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

Video section

Inputs AV INPUT VIDEO (phono jack): 1Vp-p,

75Ω

Outputs MONITOR OUT (phono jack): 1Vp-p,

75Ω

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

Latin America models: 530 – 1,710kHz (10kHz step)

531 – 1,710kHz (9kHz step)

Middle Easten models: 531 – 1,602kHz(with the MW interval set at

9kHz)

5.95 – 17.90MHz (with the SW interval set

at 5kHz)

Australian, Israel, and Thai models :

531 – 1,602kHz(with the AM tuning

interval set at 9kHz)

530 – 1,710kHz (with the AM tuning

interval set at 10kHz)

Other models: 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 – 17.90 MHz (with the SW tuning

interval set at 5kHz)

Intermediate frequency 450kHz

Antenna AM loop antenna

External antenna terminal

— Continued on next page —

STR-WX5

1313

4-4. SCHEMATIC DIAGRAM MAIN(1/2) SECTION • Refer to page 24 for IC Block Diagrams.

(Page 15)

(Page 14) (Page 14) (Page 14) (Page 14)

(Page 18)

STR-WX5

1414

4-5. SCHEMATIC DIARGAM MAIN(2/2) SECTION • Refer to page 12 for Printed Wiring Board. • Refer to page 24 for IC Block Diagrams.

The components identified by mark !or dotted

line with mark !are critical for safety.

Replace only with part number specified.

(Page 20)

(Page 23) (Page 15) (Page 20) (Page 16)

(Page 16)

(Page 13)(Page 13)(Page 13)(Page 13)

0.8

0.1

Q854

BN1F4M

Q855

2SC2958L

RELAY SWITCH

R857

22k

STR-WX5

1515

4-6. SCHEMATIC DIAGRAM AV/MIC SECTION 4-7. PRINTEDWIRING BOARD AV/MIC SECTION

• Refer to page 24 for IC Block Diagrams. • Refer to page 9 for Circuit Boards Location.

(Page 14)

(Page 18)

(Page 13)

(Page 16)

MODEL

(Page 12)

(Page 19)

(Page 17)

MODEL

STR-WX5

1616

4-8. 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.

(Page 14)

(Page 15)

1/4W

STR-WX5

1818

4-10. SCHEMATIC DIAGRAM DISPLAY SECTION • Refer to page 25 for IC Block Diagrams. • Refer to page 26 for IC Pin Function.

(Page 20)

(Page 13) (Page 20)

(Page 15)

3.6

3.5

STR-WX5

2020

4-12. SCHEMATIC DIAGRAM SLIDING PANEL SECTION • Refer to page 28 for IC Block Diagrams.

(Page 18)

(Page 14)

(Page 18)

(Page 14)

0.6

12.7

0.6

0.7

4.5

3.6

3.5

4.9

4-15. SCHEMATIC DIAGRAM TRANS SECTION

(Page 14)

The components identified by mark !or dotted

line with mark !are critical for safety.

Replace only with part number specified.

STR-WX5

• MAIN (2/2) SECTION

IC112 MC14052BCP

2X0

VDD

XCOM

VSS

VEE

INH

2X1

2X3

2XCOM

2X2

IC402 MC14053BCP

C.COM

INH

VEE

VSS

VDD

B.COM

A.COM

OPEN

• MAIN (1/2) SECTION

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 MO

D1 DO0

DO1

VCC

CLOCK

REF

OP2IN

OP2OUT

LPF2IN

LPF2OUT

LPF1IN

LPF1OUT

OP1OUT

OP1IN

CC1

CC2

GND

1 2 3 4 5 6 7 8

OVER LOAD DET

F/F

OFFSET DET

LATCH/

AUTORESET

MUTE

AC OFF

DET

IC851 uPC1237HA

• MIC/ECHO SECTION

IC6002 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 MO

D1 DO0

DO1

VCC

CLOCK

REF

OP2IN

OP2OUT

LPF2IN

LPF2OUT

LPF1IN

LPF1OUT

OP1OUT

OP1IN

CC1

CC2

GND

4-16. IC BLOCK DIAGRAMS

• DISPLAY SECTION

IC505 MC14053BCP

f04

13 f

12 VCC

11 NC

10 NC

15 f03

GND

BIAS

16 f02

17 f01

18 RESET

RESET

PREF

LINE

REFFERENCE

CURRENT

BPF DET

DET

RESET

Bias

C.COM

INH

VEE

VSS

VDD

B.COM

A.COM

OPEN

• SLIDING PANEL SECTION

IC891 LB1641

IC506 BA3833F

12 3 45 6 7 8 9 10

GND

MOTOR

DRIVE

NOISE

FILTER

CLAMP

FWD.IN

REV.IN

VCC 1

VCC 2

NOISE

FILTER

MOTOR

DRIVE

MOTOR

DRIVE

MOTOR

DRIVE

T.S.D O.C.P

FWD/REV/STOP

CONTROL LOGIC

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