Sony STR-DE235 Service Manual
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Sony STR-DE235 Service Manual

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3 7 63 1515 0
SERVICE MANUAL
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L 13942296513
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MICROFILM
http://www.xiaoyu163.com
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http://www.xiaoyu163.com
STR-DE235
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SPECIFICATIONS
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FM STEREO/FM-AM RECEIVER
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AEP Model
UK Model
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Summary of Contents for Sony STR-DE235

  • Page 1 STR-DE235 3 7 63 1515 0 SERVICE MANUAL AEP Model UK Model SPECIFICATIONS L 13942296513 – Continued on next page – FM STEREO/FM-AM RECEIVER u163 MICROFILM http://www.xiaoyu163.com...

  • Page 2: Table Of Contents

    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 PUB- LISHED BY SONY.

  • Page 3: General

    http://www.xiaoyu163.com SECTION 1 GENERAL 3 7 63 1515 0 Location of controls • Front view !¡ !™ !¢ !∞ !§ #∞ #§ !¶ #¶ !• !ª @º @¡ @™ @£ @¢ @∞ @§@¶@• @ª#º #¡ #™ #£ #¢ 1 I/u button !¢...

  • Page 4: Disassembly

    http://www.xiaoyu163.com SECTION 2 DISASSEMBLY 3 7 63 1515 0 Note: Follow the disassembly procedure in the numerical order given. CASE 1 screw (case3 TP2) 1 two screws (case3 TP2) 2 case 1 two screws (case3 TP2) L 13942296513 FRONT PANEL SECTION 3 screw (BVTP3 ×...

  • Page 5: Test Mode

    http://www.xiaoyu163.com SECTION 3 TEST MODE 3 7 6 3 1 5 1 5 0 REAR PAENL SECTION Initialization Mode All preset contents are cleared when this mode is activated. When returning the unit to the customer after completing repairs, per- form this operation to clear the unit.

  • Page 6: Diagrams

    STR-DE235 SECTION 4 DIAGRAMS 3 7 6 3 1 5 1 5 0 4-1. BLOCK DIAGRAM – MAIN Section (1/2) – DOLBY SURROUND PASSIVE DECODER IC301 RV404 MASTER VOLUME REAR LINE AMP LS-OUT IC302 (1/2) –4 (Page 9) MUTING...

  • Page 7: Block Diagram – Main Section (2/2)

    STR-DE235 3 7 6 3 1 5 1 5 0 4-2. BLOCK DIAGRAM – MAIN Section (2/2) – J741 PHONES S701–2 S701–3 POWER AMP S701–2–1 IC701 (1/2) SPEAKERS A SPEAKERS A Ø ON ø OFF Ø ON ø OFF...

  • Page 8: Block Diagram - Display/Power Supply Section

    STR-DE235 4-3. BLOCK DIAGRAM – DISPLAY/POWER SUPPLY Section – 3 7 6 3 1 5 1 5 0 SYSTEM CONTROLLER, FL DRIVER IC201 (2/2) S200 SYS-POWER (POWER) S201 – 220, 222 – 227, S229 – 231, 234 – 244...

  • Page 9: Note For Printed Wiring Boards And Schematic Diagrams

    http://www.xiaoyu163.com 3 7 6 3 1 5 1 5 0 4-4. NOTES FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Circuit Boards Location Note on Printed Wiring Board: Note on Schematic Diagram: • X : parts extracted from the component side. •...

  • Page 10: Printed Wiring Board - Main Board

    STR-DE235 4-5. PRINTED WIRING BOARD – MAIN Board– • See page 14 for Circuit Boards Location. 3 7 6 3 1 5 1 5 0 (Page 17) (Page (Page 17) (Page 18) • Semiconductor Location 1 3 9 4 2 2 9 6 5 1 3 Ref.

  • Page 11: Printed Wiring Boards - Sp Sw Board/Secondary Board/Standby Board/Primary Board

    STR-DE235 4-6. PRINTED WIRING BOARDS – SP SW Board/SECONDARY Board/STANDBY Board/PRIMARY Board – • See page 14 for Circuit Boards Location. 3 7 6 3 1 5 1 5 0 (Page 16) (Page 16) (Page 16) (Page 16) 1 3 9 4 2 2 9 6 5 1 3...

  • Page 12: Schematic Diagram - Main Board (1/4)

    STR-DE235 4-7. SCHEMATIC DIAGRAM – MAIN Board (1/4) – • See page 34 for IC Block Diagram. 3 7 6 3 1 5 1 5 0 • Waveforms – MAIN Board – – DISPLAY Board – 1 IC1 !£ (OSCI) 1 IC201 #∞...

  • Page 13: Schematic Diagram - Main Board (2/4)/Sp Sw Board

    STR-DE235 4-8. SCHEMATIC DIAGRAM – MAIN Board (2/4)/SP SW Board – 3 7 6 3 1 5 1 5 0 (Page 20) 1 3 9 4 2 2 9 6 5 1 3 w w w u 1 6 3 (Page 25) –...
  • Page 14 STR-DE235 4-9. SCHEMATIC DIAGRAM – MAIN Board (3/4) – • • See page 20 for Waveforms. See page 33 for IC Block Diagrams. 3 7 6 3 1 5 1 5 0 (Page 19) (Page 32) 1 3 9 4 2 2 9 6 5 1 3...

  • Page 15: Schematic Diagram - Main Board (4/4)/Secondary Board/Standby Board/Primary Board

    STR-DE235 4-10. SCHEMATIC DIAGRAM – MAIN Board (4/4)/SECONDARY Board/STANDBY Board/PRIMARY Board – • See page 35 for IC Block Diagram. 3 7 6 3 1 5 1 5 0 (Page 21) 1 3 9 4 2 2 9 6 5 1 3...

  • Page 16: Printed Wiring Boards - Panel Section

    STR-DE235 4-11. PRINTED WIRING BOARDS – PANEL Section – • See page 14 for Circuit Boards Location. 3 7 6 3 1 5 1 5 0 • Semiconductor (Page 16) Location (DISPLAY Board) Ref. No. Location D201 D202 D203...

  • Page 17: Schematic Diagram - Panel Section

    STR-DE235 3 7 6 3 1 5 1 5 0 4-12. SCHEMATIC DIAGRAM – PANEL Section – • See page 20 for Waveform. • See page 35 for IC Block Diagram. 1 3 9 4 2 2 9 6 5 1 3...

  • Page 18: Printed Wiring Boards - Volume Board/Tone Board

    STR-DE235 3 7 6 3 1 5 1 5 0 4-13. PRINTED WIRING BOARDS – VOLUME Board/TONE Board – 4-14. SCHEMATIC DIAGRAM – VOLUME Board/TONE Board – • See page 14 for Circuit Boards Location. (Page 15) (Page 15)
  • Page 19 http://www.xiaoyu163.com 3 7 63 1515 0 • IC Block Diagrams – MAIN BOARD – IC1 BU1924 TEST LOGIC AND OUTPUT SELECTOR SWITCH 57kHz OSCILLATOR ANTI- QUALITY BIT RECONSTRUCTION BANDPASS ALIASING GENERATOR FILTER (8th ORDER) DIVIDER FILTER BIPHASE CONTAS LOOP DEFFERENTIAL CLOCKED SYMBOL VARIABLE AND...
  • Page 20 http://www.xiaoyu163.com 3 7 63 1515 0 IC301 LV1018 37 36 35 34 33 32 31 30 29 28 27 26 TRIM TRIM FILTER B-NR CONTROL 8K-SRAM FILTER FILTER VOLUME – DATA DECODER R-STEREO L 13942296513 IC401 LC78212 IC701, 702 µPC2581V BIAS CIRCUIT PROTECTOR DRIVE...
  • Page 21 http://www.xiaoyu163.com 3 7 63 1515 0 IC950 NJM2103D RESET – + VREF + – OUTC VSB/SESIN – – – DISPLAY Board – L 13942296513 IC202 BA6208 MOTOR SWITCH DRIVE MOTOR SWITCH DRIVE u163 – 35 – http://www.xiaoyu163.com...

  • Page 22: Ic Pin Function Description

    http://www.xiaoyu163.com 3 7 63 1515 0 4-15. IC PIN FUNCTION DESCRIPTION • DISPLAY BOARD IC201 µPD78045FGF-082-3B9 (SYSTEM CONTROLLER, FL DRIVER) Pin No. Pin Name Description 1 to 7 DIG7 to DIG1 Digit drive signal output to the fluorescent indicator tube (FL201) —...
  • Page 23 http://www.xiaoyu163.com 3 7 63 1515 0 Pin No. Pin Name Description Motor drive signal (volume up direction) output to the volume motor drive (IC202) VOL UP “H” active SYS-POWER Power on/off switch (S200 I/u) input terminal “L” is input when key pressing TUNER-MUTE Muting control signal output to the FM/AM tuner pack “H”: muting on RDS CLK IN...

  • Page 24: Exploded Views

    http://www.xiaoyu163.com SECTION 5 EXPLODED VIEWS 3 7 63 1515 0 NOTE: • Items marked “*” are not stocked since they • -XX and -X mean standardized parts, so they The components identified by mark ! or dotted line with mark may have some difference from the original are seldom required for routine service.
  • Page 25 4-216-792-01 RING (VOL) 1-765-314-11 WIRE (FLAT TYPE) (7 CORE) 4-216-779-01 BUTTON (KEY) 1-769-941-11 WIRE (FLAT TYPE) (11 CORE) 4-216-794-31 PLATE INDICATION 1-673-043-11 VOLUME BOARD 4-996-698-01 EMBLEM, SONY 1-673-044-11 TONE BOARD u163 4-951-801-01 BUTTON (S) A-4419-013-A KEY BOARD, COMPLETE 1-673-045-11 SP SW BOARD 4-998-717-01 KNOB (BAL) 4-951-620-01 SCREW (2.6X8), +BVTP...
  • Page 26 http://www.xiaoyu163.com 3 7 63 1515 0 (3) CHASSIS SECTION T901 supplied L 13942296513 supplied The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Ref. No. Part No. Description Remark Ref.
  • Page 27 http://www.xiaoyu163.com SECTION 6 DISPLAY 3 7 63 1515 0 ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
  • Page 28 http://www.xiaoyu163.com DISPLAY 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < VIBRATOR > R265 1-249-429-11 CARBON 1/4W R266 1-249-411-11 CARBON 1/4W X201 1-577-101-11 VIBRATOR, CERAMIC (4.19MHz) R267 1-249-413-11 CARBON 1/4W R268 1-249-415-11 CARBON 1/4W ************************************************************...
  • Page 29 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark S243 1-762-196-21 SWITCH, TACT (SOUND FIELD ON/OFF) C347 1-126-963-11 ELECT 4.7uF S244 1-762-196-21 SWITCH, TACT (SOUND FIELD – MODE) C348 1-126-959-11 ELECT 0.47uF ************************************************************ C349...
  • Page 30 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C705 1-102-233-00 CERAMIC 33PF 500V CC53 1-162-282-31 CERAMIC 100PF CC54 1-162-282-31 CERAMIC 100PF C710 1-104-664-11 ELECT 47uF CC55 1-162-282-31 CERAMIC 100PF C711 1-137-372-11 FILM 0.022uF...
  • Page 31 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark IC302 8-759-636-74 IC M5218AP-22 Q753 8-749-010-25 IC MN2488-OPY-M IC401 8-759-545-64 IC LC78212 Q754 8-749-010-26 IC MP1620-OPY-M IC701 8-759-326-52 IC uPC2581V Q770 8-729-140-82 TRANSISTOR 2SA988-PAFAEA IC702 8-759-326-52 IC uPC2581V...
  • Page 32 http://www.xiaoyu163.com MAIN 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R454 1-249-417-11 CARBON 1/4W R707 1-249-435-11 CARBON 1/4W R455 1-249-417-11 CARBON 1/4W R710 1-249-421-11 CARBON 2.2K 1/4W R456 1-249-417-11 CARBON 1/4W R711 1-249-440-11 CARBON 1/4W...
  • Page 33 http://www.xiaoyu163.com MAIN POWER SWITCH PRIMARY SECONDARY 3 7 63 1515 0 SP SW STANDBY TONE Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R953 1-249-433-11 CARBON 1/4W 1-673-045-11 SP SW BOARD R954 1-249-437-11 CARBON 1/4W ************ R955 1-249-429-11 CARBON 1/4W...
  • Page 34 STR-DE235 TONE VOLUME 3 7 63 1515 0 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C473 1-137-368-11 FILM 0.0047uF 5% R480 1-249-437-11 CARBON 1/4W C474 1-137-372-11 FILM 0.022uF < VARIABLE RESISTOR > < CONNECTOR >...

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