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Sony ST-SV7 Service Manual

Fm stereo, fm/am superheterodyne tuner
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SERVICE MANUAL
Ver 1.0 2001.06
ST-SV7 is the tuner section
in MHC-SV7AV.
Sony Corporation
9-873-152-01
2001F0500-1
Home Audio Company
C 2001.6
Shinagawa Tec Service Manual Production Group
SPECIFICATIONS
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
87.5 – 108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Middle Eastern model:
531 – 1,602 kHz
(with the interval set at 9 kHz)
Other models:
531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
Dimensions (w/h/d)
Approx. 280 x 108 x 340 mm
Mass
Approx. 2.1 kg
Design and specifications are subject to change
without notice.
ST-SV7
FM STEREO, FM/AM
SUPERHETERODYNE TUNER
E Model

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  • Page 1 ST-SV7 SERVICE MANUAL E Model Ver 1.0 2001.06 ST-SV7 is the tuner section in MHC-SV7AV. SPECIFICATIONS Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range 87.5 – 108.0 MHz Antenna FM lead antenna Antenna terminals 75 ohm unbalanced Intermediate frequency 10.7 MHz...

  • Page 2: Table Of Contents

    LINE WITH MARK 0 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 PUB- LISHED BY SONY.

  • Page 3: General

    ST-SV7 SECTION 2 This section is extracted from instruction manual. GENERAL LOCATION OF CONTROLS – Front Panel – qlw; wa ws CLOCK/TIMER wh (13, 25, 34) DISPLAY qk (13, 18, 33, 40) ENTER ws (22) IR receptor wj PRESET –/+ wd (22) —...

  • Page 4: Setting The Time

    ST-SV7 Setting the time Remote Control Turn on the system. 1 2 3 4 5 Press CLOCK/TIMER (or CLOCK/TIMER SET on the remote). When you set the time for the first time, proceed to step 5. Press O or o repeatedly to select “CLOCK SET”.

  • Page 5: Disassembly

    ST-SV7 SECTION 3 DISASSEMBLY • This set can be disassembled in the order shown below. 3-1. DISASSEMBLY FLOW 3-2. COVER (Page 6) 3-3. FRONT PANEL SECTION 3-5. TUNER PACK (FM/AM) 3-7. DSP BOARD (Page 6) (Page 7) (Page 8) 3-4. PANEL BOARD, 3-6.

  • Page 6: Cover

    ST-SV7 Note: Follow the disassembly procedure in the numerical order given. 3-2. COVER 3 cover 1 screw (+BVTT3 × 6 (S)) 2 two screws (case 3 TP2) 2 two screws (case 3 TP2) 3-3. FRONT PANEL SECTION 1 wire (flat type) (19 core)

  • Page 7: Panel Board, Sircs Board

    ST-SV7 3-4. PANEL BOARD, SIRCS BOARD 2 two screws (BVTP2.6 × 8) 6 SIRCS board 4 PANEL board 2 four screws (BVTP2.6 × 8) 5 two claws 1 wire (flat type) (19 core) (CN602) 3 two claws 3-5. TUNER PACK (FM/AM)

  • Page 8: Main Board

    ST-SV7 3-6. MAIN BOARD 1 wire (flat type) (23 core) (CN508) 2 five connectors (CN510, 5031, 5032, 5041, 5042) 1 wire (flat type) (21 core) (CN509) 6 MAIN board 4 screw 4 two screws (BVTP3 × 8) (BVTP3 × 8)

  • Page 9: Test Mode

    SECTION 4 TEST MODE [GC Test Mode] Note: Use following buttons in the test mode. no mark : Button of tuner unit (ST-SV7) Enter the GC Test Mode mode : Button of amplifier unit (TA-SV7AV) Procedure 1: : Button of CD unit (MCE-SV7) 1.

  • Page 10: Diagrams

    ST-SV7 SECTION 5 DIAGRAMS 5-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS Note on Printed Wiring Board: Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF • X : parts extracted from the component side.
  • Page 11 ST-SV7 • Waveforms • IC Block Diagrams – MAIN Board – – DSP Board – – DSP Board – 1 IC501 qa (XCOUT) 1 IC601 9 (MCLK1), IC604 w; (XMCK), 5 IC601 ws (KFSIO), IC604 qd (CKOUT) IC604 LC89056W-E wa (XOUT) 4.4 Vp-p...

  • Page 12: Schematic Diagram - Main Board (1/2)

    ST-SV7 5-2. SCHEMATIC DIAGRAM – MAIN Board (1/2) – (INCLUDED IN MAIN BOARD) (1/2) CN5031 M(A)-GND EVER+5V D-GND NO901 NO991 C991 D+5V +12V REGULATOR (Page 13) IC991 C992 NJM7812FA CN5041 12.1 MIC-SIG MIC-GND (A-GND) FL-OUT FRONT-GND FR-OUT CENTER-OUT CENTER-GND (Page 13)
  • Page 13 ST-SV7 5-3. SCHEMATIC DIAGRAM – MAIN Board (2/2) – • See page 11 for Waveforms. (2/2) CN506 ST-CLK R957 ST-DIN MC D0 ST-DOUT MC D1 ST-CE IC953 BA8274K A+10V R958 TUNED C962 75Ω R959 C961 FM/AM STEREO R964 R961 2.2k 5.6k...

  • Page 14: Printed Wiring Board - Main Board

    ST-SV7 5-4. PRINTED WIRING BOARD – MAIN Board – • See page 10 for Circuit Boards Location. • Semiconductor Location ANTENNA Ref. No. Location D551 75Ω D552 D901 SYSTEM D903 CONTROL 1 (TO TA-SV7AV) D904 * SUPPLIED WITH D911 FM/AM TUNER UNIT *...

  • Page 15: Printed Wiring Board - Dsp Board

    ST-SV7 5-5. PRINTED WIRING BOARD – DSP Board – • See page 10 for Circuit Boards Location. • Semiconductor Location Ref. No. Location J601 VIDEO D601 (AUDIO) D604 J602 D605 D607 WOOFER D608 IC609 DSP BOARD D609 OPTICAL (CONDUCTOR SIDE)

  • Page 16: Schematic Diagram - Dsp Board (1/2)

    ST-SV7 5-6. SCHEMATIC DIAGRAM – DSP Board (1/2) – • • See page 11 for Waveforms. See page 11 for IC Block Diagram. C657 1000p (TH) C656 C657 C655 R664 (EA,SP) CN602 A+5V FB608 A-GND R680 FB607 DIGITAL 3.3k D+5V...

  • Page 17: Schematic Diagram - Dsp Board (2/2)

    ST-SV7 5-7. SCHEMATIC DIAGRAM – DSP Board (2/2) – • • See page 11 for Waveforms. See page 11 for IC Block Diagram. Q603 Q603 2SC1623 REGULATOR R776 R778 C690 C691 R777 R775 R762 FB606 INPUT SELECT SWITCH, C689 GRAPHIC...

  • Page 18: Printed Wiring Boards - Panel Section

    ST-SV7 5-8. PRINTED WIRING BOARDS – PANEL Section – • See page 10 for Circuit Boards Location. PANEL BOARD C610 JW24 R603 FL601 JW11 C601 FLUORESCENT C653 C655 C657 C659 C661 C651 INDICATOR C649 TUBE C664 S611 C650 S601 SIRCS...

  • Page 19: Schematic Diagram - Panel Section

    ST-SV7 5-9. SCHEMATIC DIAGRAM – PANEL Section – • See page 11 for Waveform. FL601 FLUORESCENT INDICATOR TUBE C610 R616 100k CN602 DISP/STANDBY KEY S611 D-GND STEREO/ MONO JOG2-B JOG2-A S610 R626 JOG1-B 3.9k TUNER MEMORY JOG1-A VOLA S609 R625 VOLB 2.7k...

  • Page 20: Ic Pin Function Description

    ST-SV7 5-10. IC PIN FUNCTION DESCRIPTION • MAIN BOARD IC501 M30622MGA-A69FP (SYSTEM CONTROLLER) Pin No. Pin Name Description Pin No. Pin Name Description AMP-DATA Serial data output to the M61512FP (IC607) — Ground terminal AMP-CLK Serial data transfer clock signal output to the M61512FP (IC607) 65 to 70 —...
  • Page 21 ST-SV7 • DSP BOARD IC601 CXD9617R (AUDIO DIGITAL SIGNAL PROCESSOR) Pin No. Pin Name Description — Ground terminal XRST Reset signal input from the M61512FP (IC607) “L”: reset EXTIN Master clock signal input terminal Not used (fixed at “L”) Sampling frequency selection signal input terminal Not used (fixed at “L”) VDDI —...
  • Page 22 ST-SV7 Pin No. Pin Name Description — Ground terminal WMD0 S-RAM wait mode setting terminal Fixed at “L” in this set PAGE2 Page selection signal output terminal Not used (open) — Ground terminal PAGE1, PAGE0 52, 53 Page selection signal output terminal Not used (open) BOOT Boot mode control signal output terminal Not used (fixed at “L”)
  • Page 23 ST-SV7 • DSP BOARD IC604 LC89056W-E (DIGITAL AUDIO INTERFACE RECEIVER) Pin No. Pin Name Description DISEL Selection terminal of data input terminal Fixed at “L” in this set DOUT Digital data output to the optical transceiver (IC609) DIN0 Digital data input from the optical receiver (IC952) (for MCE-SV7)
  • Page 24 ST-SV7 • DSP BOARD IC605 AK4527 (A/D, D/A CONVERTER) Pin No. Pin Name Description Audio serial data source selection signal input terminal SDOS “L”: internal ADC output, “H”: DAUX input (fixed at “L” in this set) Serial control mode selection signal input terminal “L”: 3-wire serial, “H”: I2C bus SMUTE Soft muting on/off signal input from the system controller (IC501) “L”: muting on...
  • Page 25 ST-SV7 • PANEL BOARD IC601 MB90M407PF-G-102-BND (DISPLAY CONTROLLER) Pin No. Pin Name Description 1 to 6 G6 to G1 Grid drive signal output to the fluorescent indicator tube (FL601) 7 to 10 A1 to A4 Segment drive signal output to the fluorescent indicator tube (FL601) VSS FOR IO —...

  • Page 26: Exploded Views

    ST-SV7 SECTION 6 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they may have some difference from the original are seldom required for routine service. Some one. delay should be anticipated when ordering •...

  • Page 27: Chassis Section

    ST-SV7 6-2. CHASSIS SECTION (Including not supplied not supplied not supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 51 4-924-098-01 HOLDER, PC BOARD 1-757-631-11 CORD (WITH CONNECTOR) 20P A-4725-739-A MAIN BOARD, COMPLETE (SP) 1-757-630-11 CORD (WITH CONNECTOR) 19P...

  • Page 28: Electrical Parts List

    ST-SV7 SECTION 7 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark 0 or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 29 ST-SV7 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C682 1-126-193-11 ELECT < CONNECTOR > C683 1-126-193-11 ELECT C684 1-126-964-11 ELECT 10uF CN601 1-506-469-11 PIN, CONNECTOR 4P C685 1-126-964-11 ELECT 10uF CN602 1-779-289-11 CONNECTOR, FFC (LIF (NON-ZIF)) 21P...
  • Page 30 ST-SV7 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSISTOR > R648 1-216-815-11 METAL CHIP 1/16W R649 1-216-817-11 METAL CHIP 1/16W Q601 8-729-801-93 TRANSISTOR 2SD1387 R650 1-216-817-11 METAL CHIP 1/16W Q602 8-729-120-28 TRANSISTOR 2SC1623-L5L6 R651...
  • Page 31 ST-SV7 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R706 1-216-841-11 METAL CHIP 1/16W R707 1-216-841-11 METAL CHIP 1/16W R779 1-216-841-11 METAL CHIP 1/16W R709 1-216-864-11 METAL CHIP 1/16W R780 1-216-841-11 METAL CHIP 1/16W R781...
  • Page 32 ST-SV7 MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C970 1-162-306-11 CERAMIC 0.01uF < COIL > C971 1-164-159-11 CERAMIC 0.1uF C972 1-164-159-11 CERAMIC 0.1uF L951 1-410-336-11 INDUCTOR 220uH L955 1-410-682-31 INDUCTOR 470uH C977 1-126-964-11 ELECT...
  • Page 33 ST-SV7 MAIN PANEL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R544 1-249-425-11 CARBON 4.7K 1/4W C650 1-162-306-11 CERAMIC 0.01uF R545 1-249-425-11 CARBON 4.7K 1/4W R546 1-249-407-11 CARBON 1/4W C651 1-162-282-31 CERAMIC 100PF (SP, TH) C652...
  • Page 34 ST-SV7 PANEL SIRCS Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R631 1-249-417-11 CARBON 1/4W R632 1-249-429-11 CARBON 1/4W R633 1-249-417-11 CARBON 1/4W R634 1-249-429-11 CARBON 1/4W R635 1-249-417-11 CARBON 1/4W R636 1-249-429-11 CARBON 1/4W R637...
  • Page 35 ST-SV7 MEMO...
  • Page 36 ST-SV7 REVISION HISTORY Clicking the version allows you to jump to the revised page. Also, clicking the version at the upper right on the revised page allows you to jump to the next revised page. Ver. Date Description of Revision...

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