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Sony STR-K675P Service Manual
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Sony STR-K675P Service Manual

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SERVICE MANUAL
Ver. 1.0 2005.03
• STR-K675P is the tuner and the amplifier
section in HT-DDW675.
Manufactured under license from Dolby Laboratories.
"Dolby", "Pro Logic" and the double-D symbol are trademarks
of Dolby Laboratories.
"DTS" and "DTS Digital Surround" are registered trademarks of
Digital Theater Systems, Inc.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:
(Models of area code US only)
With 6 ohm loads, both channels driven, from
120 – 20,000 Hz; rated 70 watts per channel
minimum RMS power, with no more than 0.7%
total harmonic distortion from 250 milliwatts to
rated output.
Amplifier section
1)
Power Output
(6 ohms 1 kHz, THD 10%)
2)
FRONT
:
110 W/ch
2)
CENTER
:
110 W
2)
SURR
:
110 W/ch
1) Measured under the following conditions:
120 V AC, 60 Hz
2) Depending on the sound field settings and the
source, there may be no sound output.
Inputs (Analog)
SA-CD/CD, DVD
Sensitivity: 800 mV
VIDEO 1, 2
Impedance: 50 k ohms
Sony Corporation
9-879-446-01
Audio Group
2005C1678-1
Published by Sony Engineering Corporation
© 2005.03
STR-K675P
SPECIFICATIONS
Inputs (Digital)
DVD (Coaxial)
Sensitivity: –
Impedance: 75 ohms
SA-CD/CD (Optical)
Sensitivity: –
Impedance: –
Output (Analog)
SUB WOOFER
Voltage: 2 V
Impedance: 1 k ohm
Reproduction frequency range:
28 – 20,000 Hz
Tone
±6 dB, 1 dB step
Gain levels
FM tuner section
Tuning range
87.5 - 108.0 MHz
Antenna
FM wire antenna
Antenna terminals
75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
With 10-kHz tuning scale: 530 - 1,710 kHz
With 9-kHz tuning scale: 531 - 1,710 kHz
Antenna
Loop antenna
Intermediate frequency
450 kHz
FM STEREO FM-AM RECEIVER
3) You can change the AM tuning scale to 9 kHz or
10 kHz. After tuning in any AM station, turn off the
receiver. While holding down PRESET TUNING +
or TUNING +, press ?/1. All preset stations will be
erased when you change the tuning scale. To reset
the scale to 10 kHz (or 9 kHz), repeat the procedure.
General
Power requirements
Power consumption
Power consumption (during standby mode)
Dimensions (w/h/d) (Approx.)
Mass (Approx.)
Design and specifications are subject to change
without notice
3)
3)
US Model
120 V AC, 60 Hz
170 W
0.2 W
430 × 145 × 301.5 mm
(17 × 5 6/8 × 11 7/8 inches)
including projecting parts
and controls
6.5 kg (14 lb 6 oz)

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  • Page 1 STR-K675P SERVICE MANUAL US Model Ver. 1.0 2005.03 • STR-K675P is the tuner and the amplifier section in HT-DDW675. Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D symbol are trademarks of Dolby Laboratories. “DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.

  • Page 2: Table Of Contents

    THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. • Usable with ordinary solder REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE It is best to use only unleaded solder but unleaded solder may PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR also be added to ordinary solder.

  • Page 3: General

    STR-K675P SECTION 1 GENERAL This section is extracted from instruction manual. Main unit ,  2 3  = $/3+$%(7,&$/ 25'(5 ,1387 02'(  3+21(6 MDFN   $  + ,5 UHFHSWRU   35(6(7 781,1* ±  $)'...
  • Page 4 STR-K675P Before you use your Remote button description remote Inserting batteries into the remote ,QVHUW 5 VL]H$$ EDWWHULHV ZLWK WKH  DQG ± TV ?/1 AV ?/1 SURSHUO\ RULHQWHG LQ WKH EDWWHU\ FRPSDUWPHQW :KHQ XVLQJ WKH UHPRWH SRLQW LW DW WKH UHPRWH...
  • Page 5 STR-K675P 7KH WDEOHV EHORZ VKRZ WKH VHWWLQJV RI HDFK 5HPRWH 2SHUDWLRQV )XQFWLRQ EXWWRQ %XWWRQ (17(5 799,'(2 (QWHUV WKH VHOHFWLRQ 5HPRWH 2SHUDWLRQV )XQFWLRQ &$66(77( %XWWRQ 5(&25'(5 $)' 5HFHLYHU 6HOHFWV WKH GHFRGLQJ &' 3/$<(5 PRGH IRU DXGLR VRXQG (17(5 5HFHLYHU (QWHUV WKH VHOHFWLRQ...
  • Page 6 STR-K675P 5HPRWH 2SHUDWLRQV )XQFWLRQ 5HPRWH 2SHUDWLRQV )XQFWLRQ %XWWRQ %XWWRQ 9,'(2 6NLSV WUDFNV 6<67(0 5HFHLYHU79 7XUQV RII WKH UHFHLYHU ./> &$66(77( wj wk 67$1'%< DQG RWKHU 6RQ\ DXGLR 5(&25'(5 3UHVV $9 3/$<(5 YLGHR FRPSRQHQWV &' 3/$<(5 9,'(2 ?/1 1 &$66(77( ?/1 2 3/$<(5...

  • Page 7: Test Mode

    STR-K675P SECTION 2 TEST MODE FACTORY PRESET MODE SOUND FIELD CLEAR MODE • All preset contents are reset to the default setting. • The preset sound field is cleared when this mode is activated. • Procedure: Use this mode before returning the product to clients upon While depressing the PRESET TUNING–...

  • Page 8: Diagrams

    STR-K675P SECTION 3 DIAGRAMS • Circuit Boards Location STANDBY board POWER board MAIN board VIDEO board DIGITAL board TUNING board HEADPHONE board DISPLAY board...
  • Page 9 STR-K675P THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. • Waveforms (In addition to this, the necessary note is printed in each block.) – DIGITAL Board – For Schematic Diagrams. For Printed Wiring Boards. Note: Note: IC1501 9 (MCLK1) •...

  • Page 10: Block Diagram - Main Section

    STR-K675P 3-1. BLOCK DIAGRAM — MAIN SECTION — IC400 ANALOG SOUND TUNER PACK PROCESSOR L CH INL1 75 Ω COAXIAL R CH R-CH IC1101(1/3) SYSTEM CONTROL. TUNER +10V ST-DO ST-DI TUNER-DATA T.SERIAL CLK SLATCH STEREO STEREO TUNED TUNED MUTING MUTE...

  • Page 11: Block Diagram - Display/Power Section

    STR-K675P 3-2. BLOCK DIAGRAM — DISPLAY/POWER SECTION — R-CH J700 IC501 PHONES POWER AMP RY502 Q509 Q503 +V OUT2 RELAY BOOSTER DRIVE Q501,502 LIMITER TM600 • R-CH is omitted due to same as L-CH RY501 • Signal Path D731 FRONT...

  • Page 12: Printed Wiring Board - Digital Board (Side A)

    STR-K675P • See page 8 for Circuit Boards Location. 3-3. PRINTED WIRING BOARD — DIGITAL BOARD (SIDE A) — • :Uses unleaded solder. • Semiconductor Location Ref. No. Location D1001 D1103 D1105 D1106 D1301 D1302 IC1101 IC1111 IC1131 IC1301 IC1301...

  • Page 13: Printed Wiring Board - Digital Board (Side B)

    STR-K675P • See page 8 for Circuit Boards Location. 3-4. PRINTED WIRING BOARD — DIGITAL BOARD (SIDE B) — • :Uses unleaded solder. STANDBY BOARD MAIN BOARD CNP801 CN504 (Page 22) (Page 18) VIDEO BOARD CNS250 TUNER UNIT (Page 25)

  • Page 14: Schematic Diagram - Digital Board (1/4)

    STR-K675P 3-5. SCHEMATIC DIAGRAM — DIGITAL BOARD (1/4) — • See page 9 for Waveform. • See page 27 for IC Block Diagram. TUNER UNIT VIDEO BOARD CNS250 (Page 26) CNS509 CNS508 FB1302 C1252 C1253 C1251 R1252 R1251 IC1352 R1352...

  • Page 15: Schematic Diagram - Digital Board (2/4)

    STR-K675P 3-6. SCHEMATIC DIAGRAM — DIGITAL BOARD (2/4) — CNP503 CNP504 CNP505 D1001 1SR154-400TE-25 JR1202 IC1902 TA7809LS IC1904 BA33BC0T C1021 C1022 C1914 C1913 IC1031 BA50BC0T C1031 C1032 C1905 IC1901 SI-3004KWF R1187 C1906 470 10V C1908 470 10V FB1308 JR1201 CNS505...

  • Page 16: Schematic Diagram - Digital Board (3/4)

    STR-K675P 3-7. SCHEMATIC DIAGRAM — DIGITAL BOARD (3/4) — • See page 9 for Waveform. • See page 28, 29 for IC Block Diagrams. R1019 FB1502 C1515 C1516 R1018 C1518 C1517 C1520 FB1501 IC1502 C1450 IS61LV6416-10TLT R1474 C1460 C1494 FB1453...

  • Page 17: Schematic Diagram - Digital Board (4/4)

    STR-K675P 3-8. SCHEMATIC DIAGRAM — DIGITAL BOARD (4/4) — • See page 9 for Waveform. • See page 27 for IC Block Diagram. • See page 31 for IC Pin Function Description. IC1111 S-80929CNMC -G8ZT2G C1137 0.01 C1107 R1112 R1039...

  • Page 18: Printed Wiring Board - Main Section

    STR-K675P • See page 8 for Circuit Boards Location. 3-9. PRINTED WIRING BOARD — MAIN SECTION — • :Uses unleaded solder. SPEAKERS SA-CD/CD VIDEO 2 VIDEO 1 IMPEDANCE USE 6-16 AUDIO IN AUDIO IN AUDIO IN AUDIO IN SUB WOOFER...

  • Page 19: Schematic Diagram - Main Section (1/3)

    STR-K675P 3-10. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — C421 C422 C424 C434 R411 J401 C444 R412 C443 R413 R401 C433 2.2 50V R414 R451 R415 C423 R402 C425 C435 2.2 50V R452 IC400 M61542FP C445 R403 C484 C436 C426...

  • Page 20: Schematic Diagram - Main Section (2/3)

    STR-K675P 3-11. SCHEMATIC DIAGRAM — MAIN SECTION (2/3) — • See page 29 for IC Block Diagrams. IC501 C511 R508 500V R532 RY502 680 1W RELAY CN701 CNP701 R505 2.2k Q503 Q505 R500 MN2488 2SA1038S-RSE-TP R506 R531 J700 R518 C513...

  • Page 21: Schematic Diagram - Main Section (3/3)

    STR-K675P 3-12. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) — CN504 CN505 VIDEO BOARD CNP156 (Page 26) D802 D811 C807 HZ6.8BP-TK D5SBA20-4003 Q801 T901 2SB734-T-34 CNP901 POWER -20V REG R803 TRANSFORMER C811 C813 0.22 6800 71V R804 C806 R806 C812 D801 C814 0.22...

  • Page 22: Printed Wiring Board - Standby Section

    STR-K675P • See page 8 for Circuit Boards Location. 3-13. PRINTED WIRING BOARD — STANDBY SECTION — • :Uses unleaded solder. F901 MAIN BOARD DIGITAL BOARD CNP916 CNP505 (Page 18) (Page 13) T901 • Semiconductor POWER TRANSFORMER Location Ref. No.

  • Page 23: Printed Wiring Board - Display Section

    STR-K675P • See page 8 for Circuit Boards Location. 3-14. PRINTED WIRING BOARD — DISPLAY SECTION — • :Uses unleaded solder. IC102 IC100 MUSIC MOVIE A.F.D. IC101 ENTER MAIN MENU DIGITAL BOARD CNS505 (Page 13) MASTER VOLUME SA-CD/CD VIDEO 2...

  • Page 24: Schematic Diagram - Display Section

    STR-K675P 3-15. SCHEMATIC DIAGRAM — DISPLAY SECTION — • See page 30 for IC Block Diagrams. C108 C109 0.22 0.22 R199 R198 FL101 R175 C101 0.22 R101 R102 R103 R104 R105 R106 R107 R108 2.2k 2.2k 4.7k S100 S101 S102...

  • Page 25: Printed Wiring Board - Video Board

    STR-K675P • See page 8 for Circuit Boards Location. 3-16. PRINTED WIRING BOARD — VIDEO BOARD — • :Uses unleaded solder. • Semiconductor Location Ref. No. Location IC203 IC804 IC807 J202 DIGITAL BOARD VIDEO IN CNS509 (Page 13) IC203 VIDEO IN...

  • Page 26: Schematic Diagram - Video Board

    STR-K675P 3-17. SCHEMATIC DIAGRAM — VIDEO BOARD — IC807 J201 R220 TA7805LS C210 C214 C201 C208 10 50V C825 R201 C826 C809 CNP156 J202 IC804 TA79005S C248 C207 2200p 10 50V C206 R218 R221 10 50V IC203 NJM2279D C215 C213...
  • Page 27 STR-K675P • IC Block Diagrams – DIGITAL Board – IC1131 BR24L16F-WE2 1 A0 16 K bit EEPROM ARRAY 11 bit 8 bit 2 A1 ADDRESS SLAVE WORD DATA 11 bit DECODER ADDRESS REGISTER REGISTER START STOP 3 A2 CONTROL CIRCUIT...
  • Page 28 STR-K675P IC1401 PCM1800E/2K 15 14 13 DIGITAL ∑ MODULATOR 1/64 SERIAL I/O DECIMATION INTERFACE FILTER & & MODE/FORMAT LOW-CUT CONTROL DIGITAL ∑ FILTER MODULATOR SINGLE-END SINGLE-END CLOCK/ DEFERENTIAL REFERENCE DEFERENTIAL TIMING CONTROL RESET/ CONVERTER CONVERTER POWER CONTROL IC1452 PCM1602KYG/2K 31 30...
  • Page 29 STR-K675P IC1502 IS61LV6416-10TLT ROW/COLUMN DECODER OUTPUT ENABLE BUFFER 64K x 16 BYTE ENABLE MEMORY CHIP ENABLE BUFFER ARRAY BUFFER I/O 15 I/O 0 I/O 14 I/O 1 I/O 13 I/O 2 I/O 12 I/O 3 I/O 11 I/O 4 I/O 10...
  • Page 30 STR-K675P – DISPLAY Board – IC100 PT6315 Grid driver Multiplexed driver SEG19/GRID10 Command decoder LED1 SEG18/GRID11 LED2 Display memory LED3 SEG17/GRID12 24 bits x 12 words LED4 Timing generator key scan DOUT SEG16/KS16 Key data memory Serial SEG15/KS15 (2 x 16 bits)
  • Page 31 STR-K675P • IC Pin Function Description DIGITAL BOARD IC1101 MB90488BPF-G-137E1 (SYSTEM CONTROL) Pin No. Pin Name Description DATAO Audio data signal input from DIR GP9 signal input from DSP BST signal output to DSP HCS signal output to DSP HACN...
  • Page 32 STR-K675P Pin No. Pin Name Description STOP AC off detect signal input Operation mode setting input Operation mode setting input Operation mode setting input RDS CLOCK RDS clock signal input (Not used) RDS DATA RDS data signal input (Not used)
  • Page 33 STR-K675P Pin No. Pin Name Description Data signal output to DIR Data signal input from DIR ERROR PLL error muting signal input from DIR XSTATE XSTATE data signal input from DIR...

  • Page 34: Exploded Views

    STR-K675P SECTION 4 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • The mechanical parts with no reference number The components identified by mark 0 or may have some difference from the original in the exploded views are not supplied.

  • Page 35: Chassis Section

    STR-K675P 4-2. CHASSIS SECTION Q554 Q553 Q654 Q604 Q503 supplied Q504 Q653 supplied Q603 Q703 Q704 supplied F901 #1 #1 T901 supplied supplied supplied supplied Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 0 F901 4-232-237-01 FOOT (DIA. 30) 1-533-452-12 FUSE, GLASS TUBE (DIA.

  • Page 36: Electrical Parts List

    STR-K675P SECTION 5 DIGITAL ELECTRICAL PARTS LIST NOTE: • Due to standardization, replacements in the • CAPACITORS When indicating parts by reference number, uF: µF parts list may be different from the parts please include the board name. specified in the diagrams or the components •...
  • Page 37 STR-K675P DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C1491 1-126-964-11 ELECT 10uF C1494 1-100-566-91 CERAMIC CHIP 0.1uF D1106 8-719-988-61 DIODE 1SS355TE-17 C1495 1-162-960-11 CERAMIC CHIP 220PF D1107 8-719-988-61 DIODE 1SS355TE-17 C1501 1-100-566-91 CERAMIC CHIP 0.1uF...
  • Page 38 STR-K675P DIGITAL Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSISTOR > R1129 1-216-809-11 METAL CHIP 1/10W R1132 1-216-833-11 METAL CHIP 1/10W Q1103 8-729-027-43 TRANSISTOR RT1N141C-TP-1 R1134 1-216-809-11 METAL CHIP 1/10W Q1104 8-729-230-49 TRANSISTOR 2SC2712-YG-TE85L...

  • Page 39: Digital Display

    STR-K675P DIGITAL DISPLAY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R1316 1-216-809-11 METAL CHIP 1/10W R1515 1-216-857-11 METAL CHIP 1/10W R1517 1-216-813-11 METAL CHIP 1/10W R1318 1-216-833-11 METAL CHIP 1/10W R1518 1-216-813-11 METAL CHIP 1/10W...
  • Page 40 STR-K675P DISPLAY HEADPHONE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C108 1-135-798-11 CERAMIC 0.22uF R116 1-247-847-91 CARBON 4.7K 1/4W C109 1-135-798-11 CERAMIC 0.22uF R137 1-247-847-91 CARBON 4.7K 1/4W C110 1-127-868-11 CERAMIC 2200PF R138 1-249-429-11 CARBON...
  • Page 41 STR-K675P MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C422 1-126-963-11 ELECT 4.7uF C651 1-126-963-11 ELECT 4.7uF C423 1-126-963-11 ELECT 4.7uF C652 1-128-809-11 CERAMIC 100PF C424 1-126-963-11 ELECT 4.7uF C425 1-126-963-11 ELECT 4.7uF C653 1-128-813-11 CERAMIC...
  • Page 42 STR-K675P MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < DIODE > Q505 8-729-042-09 TRANSISTOR 2SA1038S-RSE-TP Q506 8-729-042-09 TRANSISTOR 2SA1038S-RSE-TP D501 8-719-991-33 DIODE 1SS133T-72 D502 8-719-991-33 DIODE 1SS133T-72 Q507 8-729-281-53 TRANSISTOR 2SC1815GR-TPE2 D503 8-719-991-33 DIODE 1SS133T-72...
  • Page 43 STR-K675P MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R505 1-249-421-11 CARBON 2.2K 1/4W R611 1-247-847-91 CARBON 4.7K 1/4W 0 R612 R506 1-249-440-11 CARBON 1/4W 1-240-855-81 CARBON 6.2K 1/4W R507 1-249-414-11 CARBON 1/4W R613 1-249-419-11 CARBON 1.5K...
  • Page 44 STR-K675P MAIN POWER STANDBY Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R720 1-249-439-11 CARBON 1/4W A-1082-613-A STANDBY BOARD, COMPLETE 0 R721 1-249-393-11 CARBON 1/4W ************************ R722 1-247-871-91 CARBON 1/4W < CAPACITOR > 0 R723 1-249-389-11 CARBON...
  • Page 45 STR-K675P STANDBY TUNING VIDEO Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark < TRANSFORMER > R218 1-247-804-11 CARBON 1/4W R220 1-247-804-11 CARBON 1/4W 0 T902 1-443-516-11 POWER TRANSFORMER R221 1-247-804-11 CARBON 1/4W ************************************************************* ************************************************************ TUNING BOARD...
  • Page 46 STR-K675P 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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