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Sony STR-WX5 Service Manual
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Sony STR-WX5 Service Manual

Sony STR-WX5 Service Manual

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SERVICE MANUAL

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)
Continuous RMS power output (Reference)
Inputs
Output
Video section
Inputs
Outputs
Tuner section
FM stereo, FM/AM superheterodyne tuner
MICROFILM
SPECIFICATIONS
120 + 120W (6 Ω at 1kHz DIN)
150 + 150 W
(6 Ω at 1kHz, 10% THD)
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
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
AV INPUT VIDEO (phono jack): 1Vp-p,
75Ω
MONITOR OUT (phono jack): 1Vp-p,
75Ω
STR-WX5
Australian 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
FM STEREO/FM-AM RECEIVER
E Model
Tourist Model
— Continued on next page —

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Summary of Contents for Sony STR-WX5

  • Page 1: Service Manual

    STR-WX5 SERVICE MANUAL E Model Australian Model Tourist Model STR-WX5 is the tuner and amplifier section in MHC-WX5. SPECIFICATIONS Amplifier section FM tuner section The following measured at AC 120, 220, 240V 50/60Hz Tuning range 87.5 – 108.0MHz DIN power output (Rated) (FRONT) Antenna terminals 75Ω...
  • Page 2 STR-WX5 4-4. SCHEMATIC DIAGRAM MAIN(1/2) SECTION • Refer to page 24 for IC Block Diagrams. (Page 15) (Page 18) (Page 14) (Page 14) (Page 14) (Page 14)
  • Page 3 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 BN1F4M...
  • Page 4 STR-WX5 4-6. SCHEMATIC DIAGRAM AV/MIC SECTION • Refer to page 24 for IC Block Diagrams. 4-7. PRINTED WIRING BOARD AV/MIC SECTION • Refer to page 9 for Circuit Boards Location. MODEL (Page 12) MODEL MODEL MODEL MODEL MODEL MODEL MODEL...
  • Page 5 STR-WX5 4-8. SCHEMATIC DIAGRAM POWER AMP SECTION 1/4W (Page 14) 1/4W (Page 14) (Page 14) 1/4W (Page 15) The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
  • Page 6 STR-WX5 4-10. SCHEMATIC DIAGRAM DISPLAY SECTION • Refer to page 25 for IC Block Diagrams. • Refer to page 26 for IC Pin Function. (Page 15) (Page 20) (Page 13) (Page 20)
  • Page 7 STR-WX5 4-12. SCHEMATIC DIAGRAM SLIDING PANEL SECTION • Refer to page 28 for IC Block Diagrams. (Page 14) (Page 18) (Page 18) (Page 14)

  • Page 8: Schematic Diagram Trans Section

    STR-WX5 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.

  • Page 9: Ic Block Diagrams

    4-16. IC BLOCK DIAGRAMS • MAIN (1/2) SECTION IC401 M65850P IC402 MC14053BCP B.COM OPEN A.COM OSCILLATOR LPF2 C.COM 1/2 VCC OPEN CLOCK AUTO MAIN 20KBIT RESET RESET CONTROL SRAM OPEN LPF1 • MAIN (2/2) SECTION IC112 MC14052BCP IC851 uPC1237HA OVER LOAD DET MUTE 2XCOM OFFSET DET...
  • Page 10 • DISPLAY SECTION IC505 MC14053BCP B.COM OPEN A.COM C.COM OPEN OPEN IC506 BA3833F RESET 18 RESET RESET REFFERENCE PREF 17 f01 CURRENT LINE 16 f02 LINE 15 f03 BIAS 13 f Bias 12 VCC 11 NC 10 NC • SLIDING PANEL SECTION IC891 LB1641 T.S.D O.C.P...