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Sony STR-VX500 Service Manual

Fm stereo/fm-am receiver
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SERVICE MANUAL

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 Ω at 1kHz DIN)
Continuous RMS power output (Reference)
FRONT SPEAKER: 150 + 150W
(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 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 8Ω or more.
FRONT SPEAKER:
accepts impedance of 6 to 16Ω
REAR SPEAKER:
accepts impedance of 16Ω
SUPER WOOFER:
Voltage 1V, impedance 1kΩ
MICROFILM
STR-VX500
SPECIFICATIONS
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Antenna terminals
Intermediate frequency
AM tuner section
Tuning range
Intermediate frequency
Antenna
General
Power requirements
Power consumption
Dimensions (w/h/d)
Mass
Design and specifications are subject to change without notice.
FM STEREO/FM-AM RECEIVER
E Model
87.5 – 108.0MHz
75Ω unbalanced
10.7MHz
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)
450kHz
AM loop antenna External antenna terminal
120V, 220V or 230 – 240V AC, 50/60Hz
Adjustable with voltage selector
290W
Approx. 288 × 205 × 375mm
Approx. 8.6kg

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  • Page 1: Service Manual

    STR-VX500 SERVICE MANUAL E Model This set is the tuner and amplifier section in MHC-VX500. SPECIFICATIONS Amplifier section Tuner section The following measured at AC 120, 220, 240V 50/60 Hz FM stereo, FM/AM superheterodyne tuner DIN power output (Rated) (FRONT) 120 + 120W (6 Ω...

  • Page 2: Table Of Contents

    COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

  • Page 3: General

    SECTION 1 GENERAL Front Panel qjqh ql m – button 1 MOVIE button w; NON-STOP button 2 MUSIC button 3 GAME button wa EDIT button 4 PLACE button ws FLASH button wd PLAY MODE button 5 P FILE button wf REPEAT button 6 EFFECT ON/OFF button 7 OPEN/CLOSE button wg PHONES jack...
  • Page 4 Rear Panel 1 SYSTEM CONTROL jack 2 ANTENNA terminal 3 REAR SPEAKER terminal 4 MONITOR OUT jack 5 FRONT SPEAKER terminal 6 MD/VIDEO 1 jack...

  • Page 5: 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 3 5 Sliding panel assembly 3 Holder level 2-2.

  • Page 6: Service Mode

    SECTION 3 SERVICE MODE Connections and Operations When Used Alone Normally, use the unit connected to the HTC-VX500 as follows. Basically, when servicing the unit, connect the unit as follows. HTC-VX500 UNIT SYSTEM CONTROL 17P AC IN Even when not connected to the HTC-VX500, the unit can operate alone as it mounts a power supply (some functions will however not be available).
  • Page 7 LED and Fluorescent Indicator Tube All Lit, Key Check Mode (Do not connect the HTC-VX500.) Procedure: Press 1/1 button to turn the set ON. Press the OPEN/CLOSE button to open the sliding panel. Press three buttons DELAY , ENTER/NEXT , and DISPLAY/DEMO simultaneously. LEDs and fluorescent indicator tube are all turned on.
  • Page 8 • 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 9: Diagrams

    STR-VX500 SECTION 4 DIAGRAMS PANEL Aging Mode 4-1. CIRCUIT BOARDS LOCATION 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.

  • Page 10: Block Diagrams

    STR-VX500 4-2. BLOCK DIAGRAMS MAIN SECTION VIDEO IC111(1/2) VOLUME IC111(2/2) L-CH SELECT R-CH(CD R) SWITCH MUTE MICON MD/V1 R-CH(PB R) Q183 INTERFACE CN101 POWER R-CH SYSTEM IC113(2/2) R-CH MUTE SECTION CONTROL 32 34 R-CH(REC R) HTC-VX500 DBFB SELECTOR IIC DATA...

  • Page 11: Power Section

    STR-VX500 POWER SECTION J781 RY781 VIDEO VIDEO OUT SUPER WOOFER R-CH R-CH D761 TB201 REAR SPEAKER POWER AMP IC901 D751 R-CH MAIN RY751 SECTION TB751 MUTE L-CH FRONT Q181 SPEAKER TA MUTE OVER LOAD Q952 R-CH J755 MUTE R-CH PHONES...
  • Page 12 STR-VX500 • Waveforms THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. DISPLAY Section (In addition to this, the necessary note is printed in each block.) For schematic diagrams. For printed wiring boards. 5.5Vp-p Note: Note: • X : parts extracted from the component side.

  • Page 13: Printed Wiring Board Main Section

    STR-VX500 4-3. PRINTED WIRING BOARD MAIN SECTION • Refer to page 9 for Circuit Boards Location. • Semiconductor Location Ref. No. Location HTC-VX500 D101 B-11 D102 B-11 D131 D401 D402 D403 D751 F-11 D752 E-10 D761 E-12 D781 G-10 D801...

  • Page 14: Schematic Diagram Main (1/2) Section

    STR-VX500 4-4. SCHEMATIC DIAGRAM MAIN (1/2) SECTION • Refer to page 27 for IC Block Diagrams.

  • Page 15: Schematic Diagram Main (2/2) Section

    STR-VX500 4-5. SCHEMATIC DIAGRAM MAIN (2/2) SECTION • Refer to page 13 for Printed Wiring Board. • Refer to page 27 for IC Block Diagrams. Q854 BN1F4M R857 Q855 2SC2958L RELAY SWITCH The components identified by mark ! or dotted line with mark ! are critical for safety.

  • Page 16: Schematic Diagram Power Amp Section

    STR-VX500 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.

  • Page 17: Printed Wiring Board Power Amp Section

    STR-VX500 4-7. PRINTED WIRING BOARD POWER AMP SECTION • Refer to page 9 for Circuit Boards Location.

  • Page 18: Schematic Diagram Display Section

    STR-VX500 4-8. SCHEMATIC DIAGRAM DISPLAY SECTION • Refer to page 28 for IC Block Diagrams. • Refer to page 12 for Waveform. MY,SP,IA,HK MODEL EA MODEL...

  • Page 19: Printed Wiring Board Display Section

    STR-VX500 4-9. PRINTED WIRING BOARD DISPLAY SECTION • Refer to page 9 for Circuit Boards Location. • Semiconductor Location Ref. No. Location D501 D502 D504 D505 D506 D507 EA MODEL D509 MY,SP,IA,HK MODEL D511 D512 D513 D514 D515 D516 D517...

  • Page 20: Schematic Diagram Sliding Panel Section

    STR-VX500 4-10. SCHEMATIC DIAGRAM SLIDING PANEL SECTION • Refer to page 28 for IC Block Diagrams.

  • Page 21: Printed Wiring Board Sliding Panel Section

    STR-VX500 4-11. PRINTED WIRING BOARD SLIDING PANEL SECTION • Refer to page 9 for Circuit Boards Location.

  • Page 22: Printed Wiring Board Trans Section

    STR-VX500 4-12. PRINTED WIRING BOARD TRANS SECTION • Refer to page 9 for Circuit Boards Location.

  • Page 23: Schematic Diagram Trans Section

    STR-VX500 4-13. SCHEMATIC DIAGRAM TRANS SECTION 2.5A 2.5A (Page 15) T6.3AL 250V The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.

  • Page 24: Schematic Diagram Av/Mic Section

    STR-VX500 4-14. SCHEMATIC DIAGRAM AV/MIC SECTION • Refer to page 28 for IC Block Diagrams.

  • Page 25: Printed Wiring Board Av/Mic Section

    STR-VX500 4-15. PRINTED WIRING BOARD AV/MIC SECTION • Refer to page 9 for Circuit Boards Location.

  • Page 26: Ic Block Diagrams

    4-16. IC BLOCK DIAGRAMS • MAIN BOARD IC300 LV1041M R BPF2 L BPF2 RECT RECT LOGIC LOGIC R BPF1 RECT L BPF1 RECT LOGIC LOGIC RT IN S DC OUT C DC OUT R DC OUT LT IN L DC OUT CONTROL DC CUT V REF...
  • Page 27 IC401 M65850P OSCILLATOR LPF2 1/2 VCC CLOCK AUTO MAIN 20KBIT RESET RESET CONTROL SRAM LPF1 IC851 µPC1237HA OVER LOAD DET MUTE OFFSET DET LATCH/ AUTORESET AC OFF...

  • Page 28: Motor Board

    • PANEL BOARD IC505 µPD4053BC IC506 BA3833F-E2 RESET RESET 18 RESET B.COM OPEN A.COM REFFERENCE PREF 17 f01 CURRENT C.COM OPEN LINE 16 f02 LINE 15 f03 OPEN BIAS 13 f Bias 12 VCC 11 NC 10 NC • MOTOR BOARD •...

  • Page 29: Ic Pin Function

    4-17. IC PIN FUNCTION • IC501 SYSTEM CONTROL (uPD780016AYGF-025-3BA) (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...
  • Page 30 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 Audio indicator output MOVIE A MOVIE G...
  • Page 31 Pin No. Pin Name Description — Ground MOTOR1 Panel motor control output MOTOR2 PANEL OPEN Panel open switch output PANEL CLOSE Panel close switch output ST. MUTE ST mute signal output STEREO Stereo detection input for tuner TUNED Tuner detection input for tuner Tuner PLL latch output DATA IN Tuner PLL data input...

  • Page 32: 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 33: Front Panel Section

    X-4951-665-1 ESCUTCHEON (L) ASSY * 62 4-932-810-11 CUSHION (FL) X-4949-994-1 ESCUTCHEON (EQ) ASSY * 63 4-900-849-01 HOLDER (FL) 4-962-708-11 EMBLEM (4-A), SONY * 64 1-669-957-11 FRONT AV BOARD 4-951-620-01 SCREW (2.6 × 8), +BVTP 4-900-845-01 BRACKET SLIDER * 59 A-4414-708-A MIC/ECHO BOARD, COMPLETE (EA,HK,MY,SP)

  • Page 34: Slide Mechanism Section

    5-3. SLIDE MECHANISM SECTION M891 Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 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-4950-394-1 HOLDER (L) ASSY 3-344-059-01 BELT (L) X-4950-395-1 HOLDER (R) ASSY * 111 1-669-965-11 MOTOR BOARD * 105...

  • Page 35: Circuit Boards And Back Panel Section

    5-4. CIRCUIT BOARDS AND BACK PANEL SECTION IA MODEL EA, SP, MY MODEL HK MODEL not supplied T901 M901 not supplied Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks * 151 A-4419-951-A MAIN BOARD, COMPLETE (EA,HK,MY,SP) 4-970-381-11 FOOT (REAR) * 151 A-4426-429-A MAIN BOARD, COMPLETE (IA)

  • Page 36: Electrical Parts List

    DETECTOR FRONT AV SECTION 6 HEADPHONE LOADING PANEL ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name.
  • Page 37 LOADING PANEL MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > < SWITCH > Q531 8-729-900-80 TRANSISTOR BA1A4M-TP S631 1-762-751-11 SWITCH, TACTILE (REW) Q532 8-729-900-80 TRANSISTOR BA1A4M-TP S632 1-762-751-11 SWITCH, TACTILE (GAME) Q533 8-729-900-80 TRANSISTOR BA1A4M-TP S633...
  • Page 38 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C161 1-136-171-00 FILM 0.33uF C818 1-126-959-11 ELECT 0.47uF C162 1-136-161-00 FILM 0.047uF C819 1-104-664-11 ELECT 47uF C163 1-164-159-11 CERAMIC 0.1uF C820 1-126-959-11 ELECT 0.47uF C164 1-130-480-00 MYLAR 0.0056uF 5% C821 1-104-664-11 ELECT...
  • Page 39 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < IC > R136 1-247-883-00 CARBON 150K 1/4W R138 1-249-437-11 CARBON 1/4W IC111 8-759-495-24 IC M62442FP-TP R139 1-247-903-00 CARBON 1/4W IC112 8-759-000-48 IC MC14052BCP R140 1-249-441-11 CARBON 100K 1/4W IC113...
  • Page 40 MAIN MIC/ECHO Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R702 1-247-807-31 CARBON 1/4W A-4414-708-A MIC/ECHO BOARD, COMPLETE (EA,HK,MY,SP) R705 1-247-807-31 CARBON 1/4W ************************************* R706 1-247-807-31 CARBON 1/4W A-4414-724-A MIC/ECHO BOARD, COMPLETE (IA) R707 1-247-807-31 CARBON 1/4W **************************** R708...
  • Page 41 MIC/ECHO MOTOR PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < COIL > A-4426-837-A PANEL BOARD, COMPLETE (EA) ************************* L6011 1-410-521-11 INDUCTOR 100uH A-4417-072-A PANEL BOARD, COMPLETE (HK,MY,SP) ******************************* < RESISTOR > A-4414-737-A PANEL BOARD, COMPLETE (IA) ************************* R6001 1-249-429-11 CARBON...
  • Page 42 PANEL Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < DIODE > R505 1-249-429-11 CARBON 1/4W R506 1-249-429-11 CARBON 1/4W D501 8-719-024-99 DIODE 11ES2-NTA2B R507 1-249-441-11 CARBON 100K 1/4W D502 8-719-911-19 DIODE 1SS133T-72 R514 1-249-429-11 CARBON 1/4W D504 8-719-911-19 DIODE 1SS133T-72...
  • Page 43 PANEL POWER AMP Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R568 1-247-807-31 CARBON 1/4W < SWITCH > R569 1-249-407-11 CARBON 1/4W F R570 1-249-409-11 CARBON 1/4W F S501 1-762-751-11 SWITCH, TACTILE (EQ 16kHz) R571 1-249-411-11 CARBON 1/4W S502 1-762-751-11 SWITCH, TACTILE (NAME IN)
  • Page 44 POWER AMP PRIMARY SECONDARY Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C936 1-162-282-31 CERAMIC 100PF R934 1-249-421-11 CARBON 2.2K 1/4W F C937 1-128-560-11 ELECT 22uF 100V R935 1-249-421-11 CARBON 2.2K 1/4W F C938 1-126-934-11 ELECT 220uF R936 1-249-421-11 CARBON...
  • Page 45 SECONDARY SURR SPK Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < RESISTOR > ************** HARDWARE LIST ! R871 1-219-119-81 FUSIBLE 1/4W F ************** ! R872 1-219-119-81 FUSIBLE 1/4W F 7-685-647-79 SCREW +BVTP 3 × 10 TYPE2 N-S ************************************************************ 7-685-646-79 SCREW +BVTP 3 ×...
  • Page 46 STR-VX500 Sony Corporation 9-929-004-11 99H16091-1D Home Audio Company Printed in Japan ©1999.8 Published by Quality Assurance Dept.

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