Sony STRWX-5 Service manual

STR-WX5

SERVICE MANUAL

STR-WX5 is the tuner and amplifier
section in MHC-WX5.

SPECIFICATIONS

Amplifier section

The following measured at AC 120, 220, 240V 50/60Hz
DIN power output (Rated) (FRONT)

120 + 120W (6 Ω at 1kHz DIN)

Continuous RMS power output (Reference)

150 + 150 W
(6 Ω at 1kHz, 10% THD)

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

450/250mV, impedance 47kΩ
AV INPUT AUDIO (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 8Ω or 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

E Model

Australian Model

Tourist Model

FM tuner section

Tuning range 87.5 – 108.0MHz
Antenna terminals 75Ω unbalanced
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 —

MICROFILM

FM STEREO/FM-AM RECEIVER

STR-WX5

4-4. SCHEMATIC DIAGRAM MAIN(1/2) SECTION

• Refer to page 24 for IC Block Diagrams.

(Page 15)

(Page 18)

16

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

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STR-WX5

4-5. SCHEMATIC DIARGAM MAIN(2/2) SECTION

• Refer to page 12 for Printed Wiring Board. • Refer to page 24 for IC Block Diagrams.

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

(Page 16)

(Page 20)

(Page 16)

Q854

0.8

BN1F4M

R857
22k

0

Q855
2SC2958L
RELAY SWITCH

16

(Page 23)

0.1

(Page 15) (Page 20)

(Page 16)

The components identified by mark ! or dotted
line with mark ! are critical for safety.
Replace only with part number specified.

1414