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Sony STR-WX5 Service Manual

Fm stereo/fm-am receiver
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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: Table Of Contents

    TABLE OF CONTENTS General 1. GENERAL ................3 Power requirements Australian model: 240V AC, 50/60Hz 2. DISASSEMBLY Israel and Thailand models: 2-1. Sliding Panel Assembly ······················································ 9 220V AC, 50/60Hz 2-2. Level Slider ········································································ 9 Other models: 120V or 220V or 230 – 240, 50/60Hz Adjustable with voltage selector Power consumption 290W...

  • Page 3: General

    SECTION 1 GENERAL Front Panel 3 4 5 6 EXCEPT JE JE MODEL rl t; td tf tgth tjtk 1 1/u (Power) button wd MOVIE button rf VIDEO (AV INPUT (VIDEO 2)) jack 2 SLIDING SENSOR window wf ENTER/NEXT button and indicator rg AUDIO-L (AV INPUT (VIDEO 2)) jack 3 MOVIE indicator wg ) + button and indicator...

  • Page 4: Disassembly

    SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. 2-1. SLIDING PANEL ASSEMBLY 4 Flat type cable (19 core) Slide mechanism 1 Push the OPEN/CLOSE button to open the Sliding panel assembly. 2 Screw (BVTP 3x8) 5 Sliding panel assembly 3 Holder level 2-2.

  • Page 5: Service Mode

    SECTION 3 SERVICE MODE Connections and Operations When Used Alone Normally, use the unit connected to the HTC-WX5 as follows. Basically, when servicing the unit, connect the unit as follows. HTC-WX5 UNIT SYSTEM CONTROL 17P AC IN Even when not connected to the HTC-WX5, the unit can operate alone as it mounts a power supply (some functions will however not be available).
  • Page 6 LED and Fluorescent Indicator Tube All Lit, Key Check Mode (Do not connect the HTC-WX5.) Procedure: Press 1/u button to turn the set ON. Press the OPEN/CLOSE button to open the sliding panel. Press three buttons DSP DELAY , ENTER/NEXT , and DISPLAY/DEMO simultaneously. LEDs and fluorescent indicator tube are all turned on.
  • Page 7 • When operations end abnormally: Display of fluorescent display tube Display Main Cause NO DISC ERR DISC 1 is NO DISC from the beginning FOCUS1 ERR Focus is not imposed properly FOCUS2 ERR The focus deviated several times after the disc rotated normally GFS ERR GFS ERROR FBIAS ERR...
  • Page 8 PANEL Aging Mode This mode is used for opening and closing the sliding panel continuously. Setting the aging mode : With the set at standby condition, press FLASH button, ENTER/NEXT button and STEREO/MONO button together. The aging will start and sliding panel will follow aging sequence as described below. •...

  • Page 9: Diagrams

    STR-WX5 SECTION 4 DIAGRAMS 4-1. CIRCUIT BOARDS LOCATION THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) PRIMARY board ENCAPSULATED COMPONENT SECONDARY board (EXCEPT JE) For schematic diagrams.

  • Page 10: Block Diagrams

    STR-WX5 4-2. BLOCK DIAGRAM MAIN SECTIOAN VIDEO VOLUME IC111(1/2) IC111(2/2) L-CH R-CH(CD R) SELECT MUTE SWITCH MICON R-CH(PB R) Q183 INTERFACE CN101 MD/V1 R-CH IC113(2/2) POWER SYSTEM R-CH MUTE SECTION CONTROL 32 34 30 (Page 11) R-CH(REC R) HTC-WX5 DBFB...

  • Page 11: Main Section

    STR-WX5 POWER SECTION RY781 J781 MONITOR VIDEO SUPER WOOFER R-CH POWER AMP IC901 RY751 TB751 MUTE L-CH FRONT Q181 SPEAKER TA MUTE D751 OVER LOAD TB201 Q952 R-CH REAR D761 SPEAKER R-CH MAIN R-CH SECTION OVER LOAD PROTECTOR (Page 17)

  • Page 12: Main Section

    STR-WX5 4-3. PRINTED WIRING BOARD MAIN SECTION • Refer to page 9 for Circuit Boards Location. (Page 17) (Page 15) (Page 15) (Page 19) • Semiconductor Location Ref. No. Location D101 B-11 D102 B-11 D131 D401 D402 D403 D751 F-11...

  • Page 13: Schematic Diagram Main(1/2) Section

    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 14: Schematic Diagram Main (2/2) Section

    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 15: Schematic Diagram Av/Mic Section

    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 16: Schematic Diagram Power Amp Section

    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 17: Printed Wiring Board Power Amp Section

    STR-WX5 4-9. PRINTED WIRING BOARD POWER AMP SECTION • Refer to page 9 for Circuit Boards Location. (Page 12) (Page 15) (Page 12) (Page 12)

  • Page 18: Schematic Diagram Display Section

    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 19: Printed Wiring Board Display Section

    STR-WX5 4-11. PRINTED WIRING BOARD DISPLAY SECTION • Refer to page 9 for Circuit Boards Location. (Page 12) • Semiconductor Location EXCEPT AUS MODEL Ref. No. Location AUS MODEL E,AR,JE MODEL D501 D502 EXCEPT E,AR,JE MODEL D504 EXCEPT E,AR MODEL...

  • Page 20: Schematic Diagram Sliding Panel Section

    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 21: Printed Wiring Board Sliding Panel Section

    STR-WX5 4-13. PRINTED WIRING BOARD SLIDING PANEL SECTION • Refer to page 9 for Circuit Boards Location. (Page 19) (Page 12) (Page 12) • Semiconductor Location Ref. No. Location D631 D632 D633 D634 D635 D638 D639 D640 D641 (Page 19)

  • Page 22: Printed Wiring Board Trans Section

    STR-WX5 • Refer to page 9 for Circuit Boards Location. 4-14. PRINTED WIRING BOARD TRANS SECTION...

  • Page 23: 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 24: 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 25 • 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...

  • Page 26: Ic Pin Function

    4-17. IC PIN FUNCTION • IC501 SYSTEM CONTROL (uPD780016AYGF-012-3BA) PANEL BOARD Pin No. Pin Name Description Not used LEVEL A Surround level A signal output LEVEL B Surround level B signal output PROLOGIC RLY Not used DBFB B2 DBFB level 2 signal output DBFB B1 DBFB level 1 signal output TA MUTE...
  • Page 27 Pin No. Pin Name Description AV IN AV INPUT (VIDEO 2) switch input SENSOR IN Sliding (panel) sensor signal input SIRCS IN Remote sensor signal input SPEANE RST Spectrum analyzer reset output – – Ground – – SOFT Soft test terminal Auto indicator output MOVIE A MOVIE G...
  • Page 28 Pin No. Pin Name Description – Ground MOTOR1 Panel motor contol output MOTOR2 PANEL OPEN Panel open switch output PANEL CLOSE Panel close switch output ST.MUTE ST mute signal output Stereo detection input for tuner STEREO TUNED Tuned detection input for tuner Tuner PLL latch output DATA IN Tuner PLL data input...

  • Page 29: Exploded Views

    SECTION 5 EXPLODED VIEWS NOTE: • -XX, -X mean standardized parts, so they may • Hardware (# mark) list and accessories and The components identified by mark ! or have some differences from the original one. packing materials are given in the last of this dotted line with mark ! are critical for safety.

  • Page 30: Front Panel Section

    X-4951-665-1 ESCUTCHEON (L) ASSY * 63 4-900-849-01 HOLDER (FL) X-4949-994-1 ESCUTCHEON (EQ) ASSY * 64 1-669-957-11 FRONT AV BOARD 4-962-708-11 EMBLEM (4-A), SONY * 65 4-210-042-01 BRACKET (SENSOR) 4-951-620-01 SCREW (2.6 × 8), +BVTP * 66 1-669-964-11 DETECTOR BOARD * 59...

  • Page 31: Slide Mechanism Section

    6-3. SLIDE MECHANISM SECTION M891 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 4-900-844-01 LEVEL SLIDER 4-900-864-01 BRACKET (TOP) 4-951-620-01 SCREW (2.6X8), +BVTP 4-900-847-01 GEAR (2) X-4950-394-2 HOLDER (L) ASSY 3-344-059-01 BELT (L) X-4950-395-2 HOLDER (R) ASSY 4-900-845-01 BRACKET SLIDER * 111 1-669-965-11 MOTOR BOARD...

  • Page 32: Circuit Boards And Back Panel Section

    6-4. CIRCUIT BOARDS AND BACK PANEL SECTION (EA,SP,MY,TW) (AR) (EA3,SP,MY,TW) (AUS) (E,TH,JE) not supplied (E,JE) T901 M901 not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark A-4419-951-A MAIN BOARD, COMPLETE (EXCEPT EA4,TH,JE) * 157 4-900-848-01 BACK PANEL (EXCEPT EA4,TH) A-4426-830-A MAIN BOARD, COMPLETE (EA4,TH) * 157 4-900-848-11 BACK PANEL (EA4,TH)

  • Page 33: Electrical Parts List

    DETECTOR FRONT AV SECTION 6 ELECTRICAL PARTS LIST HEADPHONE LOADING PANEL NOTE: • Due to standardization, replacements in the • CAPACITORS: • Abbreviation parts list may be different from the parts uF: µF EA3 : Saudi Arabia model specified in the diagrams or the components •...
  • Page 34 LOADING PANEL MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > S636 1-762-378-11 SWITCH, TACTILE (CD REPEAT) S637 1-762-378-11 SWITCH, TACTILE (FLASH) Q531 8-729-900-80 TRANSISTOR DTC114ES S638 1-762-378-11 SWITCH, TACTILE (DSP REVERB) Q532 8-729-900-80 TRANSISTOR DTC114ES S639 1-762-378-11 SWITCH, TACTILE (CD PLAY MODE)
  • Page 35 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C172 1-162-291-31 CERAMIC 560PF < CONNECTOR > C173 1-136-165-00 FILM 0.1uF C174 1-136-165-00 FILM 0.1uF * CN101 1-764-017-21 HOUSING,CONNECTOR (PC BOARD) 17P C175 1-136-495-11 FILM 0.068uF CN103 1-774-289-11 PIN, CONNECTOR (PC BOARD) 15P C176 1-162-306-11 CERAMIC...
  • Page 36 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > R182 1-249-421-11 CARBON 2.2K 1/4W F R184 1-249-435-11 CARBON 1/4W Q121 8-729-422-57 TRANSISTOR UN4111 R185 1-249-439-11 CARBON 1/4W Q132 8-729-620-05 TRANSISTOR 2SC2603-EF R186 1-247-883-00 CARBON 150K 1/4W Q182...
  • Page 37 MAIN MIC/ECHO Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R761 1-249-432-11 CARBON 1/4W C6022 1-126-160-11 ELECT 50V (JE) R762 1-249-437-11 CARBON 1/4W C6023 1-161-494-00 CERAMIC 0.022uF 25V (JE) R767 1-249-435-11 CARBON 1/4W C6024 1-136-167-00 FILM 0.15uF 50V (JE) R781...
  • Page 38 MIC/ECHO MOTOR PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R6016 1-249-429-11 CARBON 1/4W F C514 1-162-284-31 CERAMIC 150PF (JE) C517 1-162-303-11 CERAMIC 0.0033uF 30% R6017 1-249-437-11 CARBON 1/4W C518 1-126-157-11 ELECT 10uF (JE) C519 1-126-157-11 ELECT 10uF R6018...
  • Page 39 PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < FLUORESCENT INDICATOR > R532 1-247-807-31 CARBON 1/4W R533 1-247-807-31 CARBON 1/4W FL601 1-517-775-11 INDICATOR TUBE, FLUORESCENT R534 1-247-807-31 CARBON 1/4W R535 1-247-807-31 CARBON 1/4W < IC > R536 1-247-807-31 CARBON 1/4W...
  • Page 40 PANEL POWER AMP Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R593 1-247-843-11 CARBON 3.3K 1/4W < VIBRATOR > R594 1-249-425-11 CARBON 4.7K 1/4W F R595 1-249-429-11 CARBON 1/4W X501 1-760-489-11 VIBRATOR, CERAMIC (5MHz) R596 1-249-433-11 CARBON 1/4W X502 1-567-098-41 VIBRATOR, CRYSTAL (32kHz)
  • Page 41 POWER AMP PRIMARY SECONDARY SURR SPK Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < RESISTOR > < FUSE > R133 1-249-425-11 CARBON 4.7K 1/4W F ! F873 1-532-506-51 FUSE T6.3AL/250V (E,EA3,SP,MY,AR,TW,JE) R134 1-249-437-11 CARBON 1/4W ************************************************************ R183 1-249-425-11 CARBON...
  • Page 42 STR-WX5 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks MISCELLANEOUS ************* 1-773-125-11 WIRE (FLAT TYPE) (19 CORE) 1-233-545-32 ENCAPSULATED COMPONENT (TUNER UNIT)(E,EA4,TH,AUS,AR) 1-233-546-32 ENCAPSULATED COMPONENT (TUNER UNIT) (EA3,MY,SP,TW) 1-693-385-31 TUNER (JE) ! 160 1-575-653-11 CORD, POWER (TH)

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