Sony STR-K740P - Fm Stereo/fm-am Receiver, Service Manual

Page 1: ...840P FRONT1 100 W ch CENTER1 100 W SURR1 100 W ch STR K740P FRONT1 80 W ch CENTER1 80 W SURR1 80 W ch Models of area code CEL CEK Rated Power Output at Stereo Mode 8 ohms 1 kHz THD 0 7 STR K840P 100 W 100 W2 STR K740P 80 W 80 W2 Reference Power Output2 8 ohms 1 kHz THD 0 7 STR K840P FRONT1 100 W ch CENTER1 100 W SURR1 100 W ch STR K740P FRONT1 80 W ch CENTER1 80 W SURR1 80 W ch Models of area code...

Page 2: ...stations will be erased when you change the tuning scale To reset the scale to 10 kHz or 9 kHz repeat the procedure Video section Inputs Video 1 Vp p 75 ohms Outputs Video 1 Vp p 75 ohms Sensitivity Impedance 75 ohms S N 100 dB A 20 kHz LPF Sensitivity Impedance S N 100 dB A 20 kHz LPF Voltage 250 mV Impedance 10 kilohms Voltage 2 V Impedance 1 kilohms General Power requirements Area code Power re...

Page 3: ...le See Fig A SAFETY CHECK OUT ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPÉMENTS PUBLIÉS PAR SONY To Exposed Metal Parts on Set 0 15 µ...

Page 4: ... Section 20 3 12 Schematic Diagram VIDEO Section 20 3 13 Printed Wiring Board POWER Section 21 3 14 Schematic Diagram POWER Section 22 3 15 IC Block Diagrams 23 3 16 IC PIN FUNCTION DESCRIPTIONS 25 4 EXPLODED VIEWS 27 4 1 Front Panel Section 27 4 2 Chassis Section 1 28 4 3 Chassis Section 2 29 5 ELECTRICAL PARTS LIST 30 MODEL IDENTIFICATION BACK PANEL Parts No MODEL PARTS No K740P US 4 238 189 2s ...

Page 5: ...CEK only 3 33 34 PRESET TUNING Except for models of area code CEL CEK 3 33 54 PTY models of area code CEL CEK only ef 34 SET UP 6 4 16 37 57 SHIFT eg 33 SLEEP HT DDW740 only qf 37 SURR qd 28 57 T Z TREBLE qh 30 57 TUNER ws 22 32 33 36 TUNING 5 32 VIDEO 1 qk 22 VIDEO 2 w 22 BUTTON DESCRIPTIONS 1 power 1 4 15 20 21 30 31 54 ALPHABETICAL ORDER 0 9 2 CH wh 26 A D A DEC wk 24 26 AM Except for models of...

Page 6: ... and NAME LED turn on 4 Press the VIDEO button All segments turn off 5 Every pressing of the VIDEO button turns on each segment and LED one after another in the same order Not only the VIDEO button but also the other buttons such as DVD LD TV SAT MD TAPE CD TUNER and AUX can be used SOUND FIELD CLEAR MODE The preset sound field is cleared when this mode is activated Use this mode before returning ...

Page 7: ...the broadcasts that can be received by the tuner and sets up the broadcasts Be sure to start scanning after connecting the antenna Procedure 1 Check that the antenna is connected 2 Press the 1 button to turn on the power while pressing the MEMORY button 3 The message AUTO BETICAL SELECT appears and the receiver starts scanning ...

Page 8: ...8 STR K740P K840P SECTION 3 DIAGRAMS 3 1 Circuit Board Location VIDEO board DIGITAL board MAIN board DISPLAY board HEADPHONE board POWER SW board STANDBY board AC SELCT board E model only ...

Page 9: ...rs refer to waveforms Signal path F FM J CD ANALOG c DVD DIGITAL Abbreviation CND Canadian model MY Malaysia model SP Singapore model AR Argentine model MX Mexican model THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS In addition to this necessary note is printed in each block Note The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace o...

Page 10: ...N A 98 97 95 96 99 100 94 1 DO DI CLK CE ERROR XSTATE CKSEL1 DATA0 20 HCLK 4 HCS 5 HACN 7 PM 3 BST 6 XRST 10 CDT1 12 SCL 13 CS 8 PD 9 SMUTE 24 ANA DIG MUTING CONT Q1601 1602 21 5 6 34 33 F MUTING MUTING SWITCH Q379 49 MD0 51 MD2 28 SP SWITCH FLASH 1 27 FLASH 2 MD0 VDD MD2 FLASH 1 FLASH 2 RESET 3 3V CNS3 B J403 J402 CD MD TAPE DVD LD VIDEO 2 AUDIO OUT OPTICAL IN IC1105 DIN1 4 Signal Path R CH is om...

Page 11: ...2 7V REG 1 3 AUDIO 7V VIDEO 5V VIDEO 5V IC801 IC802 IC807 IC804 POWER RELAY 66 RELAY B D902 905 82 83 X0 X1 X1601 20 0MHz F1 F2 L SL SL C SW A MUTING 1 MUTING 1 POWER MUTING Q747 748 22 AC MUTING J791 FLUORESCENT INDICATOR TUBE FL101 61 DIN 62 CLK 63 FL_STB 7 DIN 8 CLK 9 STB 14 29 SEG1 16 42 31 GRID1 12 F1 F2 1 SW1 2 SW2 3 SW3 4 SW4 FL DRIVE IC100 D111 114 29 BLUE LED 30 MODE LED 31 2CH LED 32 AFD...

Page 12: ... EXCEPT K740P AEP UK K840P AEP UK 15P K740P AEP UK K840P AEP UK K740P AEP UK K840P AEP UK Uses unleaded solder Ref No Location D1001 A 2 D1101 A 3 D1501 B 8 D1502 B 8 D1601 E 1 D1905 F 7 D1906 E 7 D1907 E 7 IC1101 A 3 IC1102 A 1 IC1105 A 6 IC1201 C 2 IC1202 C 3 IC1501 B 2 IC1502 B 1 IC1503 C 9 IC1552 B 1 IC1601 D 1 IC1602 E 1 IC1604 F 1 IC1901 E 7 IC1902 E 6 IC1903 F 7 IC1904 E 6 Q1601 D 1 Q1602 E...

Page 13: ...13 13 STR K740P K840P 3 4 Schematic Diagram DIGITAL Section 1 2 See page 9 for Waveform See page 23 for IC Block Diagrams IC B D ...

Page 14: ...14 14 STR K740P K840P 3 5 Schematic Diagram DIGITAL Section 2 2 See page 9 for Waveform See page 25 for IC Pin Function Description ...

Page 15: ... E 9 D791 E 13 D801 D 13 D802 B 13 D804 D 12 D896 C 5 D902 D 12 D903 D 12 D904 D 13 D905 D 12 Ref No Location IC201 C 3 IC401 D 3 IC501 E 2 IC601 C 8 IC701 D 5 IC702 D 7 IC801 B 6 IC802 C 6 Ref No Location Q361 C 5 Q362 C 6 Q363 D 1 Q364 D 2 Q365 C 6 Q366 C 7 Q379 D 1 Q471 B 2 Q501 E 2 Q502 F 3 Q503 F 3 Q504 F 7 Q505 E 2 Q506 E 3 Q540 E 4 Q550 C 9 Q560 C 7 Ref No Location Q601 E 10 Q602 F 11 Q603 ...

Page 16: ...16 16 STR K740P K840P 3 7 Schematic Diagram MAIN Section 1 2 See page 23 for IC Block Diagrams 13 ...

Page 17: ...17 17 STR K740P K840P 3 8 Schematic Diagram MAIN Section 2 2 See page 23 for IC Block Diagrams IC B D IC B D IC B D ...

Page 18: ... UK K840P AEP UK K740P AEP UK K840P AEP UK EXCEPT K740P AEP UK K840P AEP UK Digital Cinema Sound Uses unleaded solder Ref No Location D100 B 6 D102 A 9 D103 D 7 D104 D 6 D105 D 6 D111 C 7 D112 C 6 D113 C 9 D114 C 8 IC100 B 9 IC101 B 3 IC102 B 13 Q100 A 6 Q101 D 1 Q102 D 2 Q103 D 2 Q104 B 5 Q107 B 11 Q108 B 11 Q109 B 11 Q110 B 11 Q111 B 12 Semiconductor Location ...

Page 19: ...19 19 STR K740P K840P 3 10 Schematic Diagram DISPLAY Section See page 24 for IC Block Diagrams IC B D ...

Page 20: ...R K740P K840P See page 8 for Circuit Boards Location 3 11 Printed Wiring Board VIDEO Section 3 12 Schematic Diagram VIDEO Section See page 24 for IC Block Diagrams IC807 IC804 IC103 Uses unleaded solder IC B D ...

Page 21: ...e page 8 for Circuit Boards Location 3 13 Printed Wiring Board POWER Section CNP801 Page 15 1 2 3 CNP802 Page 15 H J K740P US CND K840P US CND EXCEPT K740P E K840P E K740P E K840P E CHASSIS 1 2 3 1 2 3 4 5 Uses unleaded solder ...

Page 22: ...22 22 STR K740P K840P 3 14 Schematic Diagram POWER Section F901 2 5V 250V EXCEPT K740P US CND K840P US CND MX 6 3V 125V K740P US CND K840P US CND MX ...

Page 23: ...BPSYNC ERROR DATAO DOSEL1 CKOUT BCK LRCK CKSEL1 MODE0 MODE1 42 DGND 43 DVDD XMODE TIMING MICROCOMPUTER INTERFACE SAMPLING FREQUENCY C BIT DETECT PA PB DETECT LOCK DETECT SYSTEM RESET MODE SELECT INPUT CIRCUIT DATA DEMODULATOR PLL CLOCK IC501 STK350 230 MAIN BOARD 1 2 3 4 5 6 7 8 9 TR3 R1 R2 TR4 TR6 TR7 R4 R9 TR5 TR1 TR2 R6 D4 D3 R7 R8 TR8 D1 D2 R5 R3 INPUT NF VEOUT VEOUT VSS GND VCC SUB IC701 IC70...

Page 24: ...NJM2595D VIDEO BOARD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1A 1B 1Y 2A 2B 2Y GND VCC 4B 4A 4Y 3B 3A 3Y 2 3 4 5 6 7 8 9 12 11 13 15 16 1 14 10 M OUT SW5 DVD SW3 V2 SW4 NC VEE V3 SW2 NC GND V1 SW1 VI OUT VCC 6dB Amp 6dB Amp 75Ω Driver 75Ω Driver 6dB Amp 75Ω Driver ...

Page 25: ...CODEC Ground Clock signal output to AUDIO CODEC Chip select signal output to AUDIO CODEC Control data signal output to the sound processor Clock signal output to the sound processor Latch signal output to the sound processor Not used HDOUT signal input from DSP HDIN signal output to DSP Clock signal output to DSP Muting signal output Muting signal output to the power amplifier Power supply Muting ...

Page 26: ...nal output to the FL tube driver Clock signal output to the FL tube driver Strobe signal output to the FL tube driver Control A1 signal output Control A1 signal input Power relay control signal output Protector status detect signal input Headphone relay control signal output Woofer relay control signal output Rear speaker relay control signal output Centre speaker relay control signal output Front...

Page 27: ...on Remarks 4 1 Front Panel Section 2 4 1 5 5 6 6 6 5 5 9 10 11 3 8 1 1 7 FL101 chassis section not supplied 1 X 4954 429 1 FRONT PANEL ASSY SILVER K740P US 1 X 4954 430 1 FRONT PANEL ASSY SILVER K740P CND 1 X 4954 431 1 FRONT PANEL ASSY SILVER K740P E MY SP 1 X 4954 432 1 FRONT PANEL ASSY SILVER K740P AEP UK 1 X 4954 433 1 FRONT PANEL ASSY SILVER K840P US 1 X 4954 434 1 FRONT PANEL ASSY SILVER K84...

Page 28: ... K840P US 55 4 238 193 11 BACK PANEL HT4 K840P CND 55 4 238 193 21 BACK PANEL HT4 K840P MY SP 55 4 238 193 31 BACK PANEL HT4 K840P E 55 4 238 193 41 BACK PANEL HT4 K840P AEP 55 4 238 193 51 BACK PANEL HT4 K840P UK 55 4 238 193 81 BACK PANEL HT4 K840P AR 55 4 238 193 91 BACK PANEL HT4 K840P MX 56 X 4953 448 1 FOOT ASSY 57 1 575 662 31 WIRE FLAT TYPE 5 CORE K840P AR MX 57 1 769 844 11 WIRE FLAT TYPE...

Page 29: ...OWER K740P US CND K840P US CND MX 064 1 783 941 12 CORD POWER K840P AR 65 3 703 244 00 BUSHING 2104 CORD 66 1 683 761 11 AC SELECT BOARD K740P E K840P E 67 1 500 386 11 FILTER CLAMP FERRITE CORE K740P K840P US CND AEP UK E MY SP 68 4 956 370 12 BAND PLUG FIXED K740P UK K840P UK 0T901 1 437 629 11 POWER TRANSFORMER K840P AR 0T901 1 435 901 11 POWER TRANSFORMER K840P E 0T901 1 435 903 11 TRANSFORMER...

Page 30: ...HIP 0 01uF 50V C1108 1 164 156 11 CERAMIC CHIP 0 1uF 25V C1109 1 162 918 11 CERAMIC CHIP 18PF 5 00 50V C1110 1 162 918 11 CERAMIC CHIP 18PF 5 00 50V C1111 1 164 156 11 CERAMIC CHIP 0 1uF 25V C1112 1 162 974 11 CERAMIC CHIP 0 01uF 50V C1113 1 164 156 11 CERAMIC CHIP 0 1uF 25V C1114 1 162 905 11 CERAMIC CHIP 1PF 25 00 50V C1115 1 162 923 11 CERAMIC CHIP 47PF 5 50V C1116 1 126 935 11 ELECT 470uF 20 0...

Page 31: ...11 SOCKET CONNECTOR 11P EXCEPT K740P AEP UK K840P AEP UK CNS7 1 569 321 11 SOCKET CONNECTOR 15P K740P AEP UK K840P AEP UK CNS8 1 569 315 11 SOCKET CONNECTOR 5P DIODE D1001 8 719 016 74 DIODE 1SS352 TPH3 D1101 8 719 016 74 DIODE 1SS352 TPH3 D1501 8 719 049 09 DIODE 1SS367 T3SONY D1502 8 719 049 09 DIODE 1SS367 T3SONY D1601 8 719 016 74 DIODE 1SS352 TPH3 D1905 8 719 053 18 DIODE 1SR154 400TE 25 D190...

Page 32: ...L CHIP 10K 5 1 16W R1504 1 216 815 11 METAL CHIP 330 5 1 16W R1505 1 216 825 11 METAL CHIP 2 2K 5 1 16W R1506 1 216 833 11 METAL CHIP 10K 5 1 16W R1507 1 216 829 11 METAL CHIP 4 7K 5 1 16W R1508 1 216 845 11 METAL CHIP 100K 5 1 16W R1509 1 216 809 11 METAL CHIP 100 5 1 16W R1516 1 216 864 11 METAL CHIP 0 5 1 16W R1517 1 216 864 11 METAL CHIP 0 5 1 16W R1518 1 216 864 11 METAL CHIP 0 5 1 16W R1519 ...

Page 33: ...ETAL CHIP 4 7K 5 1 16W R1703 1 216 833 11 METAL CHIP 10K 5 1 16W R1704 1 216 833 11 METAL CHIP 10K 5 1 16W R1706 1 216 833 11 METAL CHIP 10K 5 1 16W R1707 1 216 833 11 METAL CHIP 10K 5 1 16W R1708 1 216 833 11 METAL CHIP 10K 5 1 16W R1709 1 216 833 11 METAL CHIP 10K 5 1 16W VIBRATOR X1101 1 781 465 21 VIBRATOR CRYSTAL 12 288MHz X1201 1 795 297 21 VIBRATOR CERAMIC 13 59MHz X1601 1 795 318 11 OSCILL...

Page 34: ...9 413 11 CARBON 470 5 1 4W F R122 1 249 417 11 CARBON 1K 5 1 4W F K740P R122 1 249 421 11 CARBON 2 2K 5 1 4W F K840P R123 1 249 417 11 CARBON 1K 5 1 4W F K740P R123 1 249 421 11 CARBON 2 2K 5 1 4W F K840P R124 1 249 421 11 CARBON 2 2K 5 1 4W F K740P R124 1 249 415 11 CARBON 680 5 1 4W F K840P R125 1 249 421 11 CARBON 2 2K 5 1 4W F K740P R125 1 249 415 11 CARBON 680 5 1 4W F K840P R126 1 249 425 11...

Page 35: ...CTILE CINEMA STUDIO C S133 1 771 410 21 SWITCH TACTILE CINEMA STUDIO B S134 1 771 410 21 SWITCH TACTILE CINEMA STUDIO A S135 1 771 410 21 SWITCH TACTILE BASS S136 1 771 410 21 SWITCH TACTILE A F D S137 1 771 410 21 SWITCH TACTILE 2CH 1 683 763 11 HEADPHONE BOARD CAPACITOR C790 1 164 159 11 CERAMIC 0 1uF 50V CONNECTOR CNP791 1 691 766 11 PLUG MICRO CONNECTOR 4P JACK J791 1 815 314 21 JACK PHONES A ...

Page 36: ...C 220PF 5 50V C607 1 128 809 11 CERAMIC 100PF 5 50V C610 1 126 947 11 ELECT 47uF 20 00 25V C611 1 136 157 00 FILM 0 022uF 5 00 50V C616 1 106 355 12 MYLAR 3300PF 5 200V C617 1 106 355 12 MYLAR 3300PF 5 200V C619 1 128 813 11 CERAMIC 220PF 5 50V C620 1 162 815 11 CERAMIC 47PF 5 00 500V C621 1 162 815 11 CERAMIC 47PF 5 00 500V C640 1 126 964 11 ELECT 10uF 20 00 50V C642 1 127 876 11 CERAMIC 0 01uF 1...

Page 37: ...uF 10 50V K840P AEP UK CC31 1 128 809 11 CERAMIC 100PF 5 50V K740P AEP UK K840P AEP UK CC32 1 128 809 11 CERAMIC 100PF 5 50V K740P AEP UK K840P AEP UK CC41 1 128 809 11 CERAMIC 100PF 5 50V K740P AEP UK K840P AEP UK CC42 1 128 809 11 CERAMIC 100PF 5 50V K740P AEP UK K840P AEP UK CC52 1 128 809 11 CERAMIC 100PF 5 50V K740P AEP UK K840P AEP UK CC53 1 128 809 11 CERAMIC 100PF 5 50V K840P AEP UK CC54 1...

Page 38: ...RANSISTOR 2SA988TP PAFAEA Q606 8 729 140 82 TRANSISTOR 2SA988TP PAFAEA Q610 8 729 119 79 TRANSISTOR 2SC2785TP FEK Q640 8 729 281 53 TRANSISTOR 2SC1815GR TPE2 Q651 8 729 119 76 TRANSISTOR 2SA1115TP EF Q652 8 729 141 30 TRANSISTOR 2SC3623ATP LK Q653 8 749 010 25 TRANSISTOR MN2488 OPY M Q654 8 749 010 26 TRANSISTOR MP1620 OPY M Q655 8 729 140 82 TRANSISTOR 2SA988TP PAFAEA Q656 8 729 140 82 TRANSISTOR...

Page 39: ... CARBON 560 5 1 4W F K840P R504 1 249 411 11 CARBON 330 5 1 4W R505 1 249 439 11 CARBON 68K 5 1 4W R510 1 249 421 11 CARBON 2 2K 5 1 4W F R511 1 249 440 11 CARBON 82K 5 1 4W R513 1 249 414 11 CARBON 560 5 1 4W F 0R514 1 249 405 11 CARBON 100 5 1 4W F 0R515 1 249 405 11 CARBON 100 5 1 4W F 0R516 1 234 182 11 ENCAPSULATED COMPONENT 0R517 1 249 393 11 CARBON 10 5 1 4W F R520 1 249 425 11 CARBON 4 7K ...

Page 40: ... 2K 5 1 4W R722 1 249 419 11 CARBON 1 5K 5 1 4W F R723 1 249 437 11 CARBON 47K 5 1 4W R724 1 249 431 11 CARBON 15K 5 1 4W R725 1 249 439 11 CARBON 68K 5 1 4W R731 1 249 425 11 CARBON 4 7K 5 1 4W F 0R732 1 249 381 11 CARBON 1 5 1 4W F 0R733 1 249 381 11 CARBON 1 5 1 4W F 0R734 1 249 389 11 CARBON 4 7 5 1 4W F R735 1 249 427 11 CARBON 6 8K 5 1 4W F R736 1 249 417 11 CARBON 1K 5 1 4W F R737 1 249 436...

Page 41: ...TE K740P AEP UK K840P AEP UK A 4727 816 A STANDBY BOARD COMPLETE K740P US CND K840P US CND 1 533 293 11 FUSE HOLDER CAPACITOR C813 1 164 159 11 CERAMIC 0 1uF 50V C814 1 164 159 11 CERAMIC 0 1uF 50V C815 1 126 943 11 ELECT 2200uF 20 00 25V C816 1 126 941 11 ELECT 470uF 20 00 25V C920 1 164 159 11 CERAMIC 0 1uF 50V C921 1 164 159 11 CERAMIC 0 1uF 50V C923 1 126 948 11 ELECT 100uF 20 00 35V C950 1 12...

Page 42: ...ECT 1uF 20 00 50V C208 1 126 960 11 ELECT 1uF 20 00 50V C210 1 126 964 11 ELECT 10uF 20 00 50V C213 1 126 964 11 ELECT 10uF 20 00 50V C214 1 164 159 11 CERAMIC 0 1uF 50V C215 1 164 159 11 CERAMIC 0 1uF 50V C248 1 128 825 11 CERAMIC 2200PF 5 50V C249 1 128 825 11 CERAMIC 2200PF 5 50V C809 1 104 665 11 ELECT 100uF 20 00 10V C825 1 164 159 11 CERAMIC 0 1uF 50V C827 1 126 947 11 ELECT 47uF 20 00 25V C...

Page 43: ...1 12 CORD POWER K840P AR 67 1 500 386 11 FILTER CLAMP FERRITE CORE K740P K840P US CND AEP UK E MY SP 0T901 1 437 629 11 POWER TRANSFORMER K840P AR 0T901 1 435 901 11 POWER TRANSFORMER K840P E 0T901 1 435 903 11 TRANSFORMER POWER K840P AEP UK MY SP 0T901 1 435 905 11 TRANSFORMER POWER K840P CND 0T901 1 435 906 11 TRANSFORMER POWER K840P US MX 0T901 1 437 639 11 POWER TRANSFORMER K740P US 0T901 1 43...

Page 44: ...g 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 1 0 2002 02 New STR K740P K840P ...