Sony-STRV7700-rec-sm 电路图 维修手册.pdf

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1、STR-V7700 E Model Chinese Model SERVICE MANUAL FM STEREO/FM-AM RECEIVER MICROFILM STR-V7700 is RECEIVER section in MHC-V7700AV. SPECIFICATIONS Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY”, “PRO LOGIC” and the double-D symbol a are trademarks of Dolby Laboratories

2、 Licensing Corporation. Continued on next page Amplifier section Continuous RMS power output FRONT SPEAKER: China model100+100 watts 6 ohms at 1 kHz, 10% THD (240V AC supply) 85+85 watts 6 ohms at 1 kHz, 10% THD (220V AC supply) Other models100+100 watts (6 ohmsat 1 kHz,10% THD) CENTER SPEAKER: 45wa

3、tts (reference) (8 ohms at 1 kHz, 10% THD) REAR SPEAKER: 30+30 watts (reference) (8 ohms at 1 kHz, 10% THD) Peak music power output: 1800 watts (reference) InputsMD/VIDEO 1 IN (phono jacks): voltage 250 mV, impedance 47 kilo ohms AV INPUT AUDIO (phono jacks): voltage 250 mV, impedance 47 kilo ohms M

4、IX MIC 1/2 (phone jack): sensitivity 1 mV, impedance 10 kilo ohms OutputsMD/VIDEO 1 OUT (phono jacks): voltage 250 mV, impedance 1 kilo ohm PHONES (stereo phone jack): accepts headphones of 8 ohms or more. FRONT SPEAKER: accepts impedance of 6 to 16 ohms CENTER SPEAKER: accepts impedance of 8 to 16

5、ohms REAR SPEAKER: accepts impedance of 8 to 16 ohms SUPER WOOFER: Voltage 1 V, impedance 1 kilo ohm Video section InputsAV INPUT VIDEO (phono jack): 1 Vp-p, 75 ohms VIDEO IN (phono jack): 1 Vp-p, 75 ohms OutputsMONITOR OUT (phono jack): 1 Vp-p, 75 ohms VIDEO OUT (phono jack): 1 Vp-p, 75 ohms S-VIDE

6、O (4-pin/mini- DIN jack): Y: 1 Vp-p, unbalanced, sync negative C: 0.286 Vp-p, load impedance 75 ohms Tuner section FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range87.5-108.0 MHz Antenna terminals75 ohm unbalanced Intermediate frequency10.7 MHz AM tuner section Tuning range Thai m

7、odels:531-1,602 kHz (with the AM tuning interval set at 9 kHz) 530-1,710 kHz (with the AM tuning interval set at 10 kHz) Other models:MW 531-1,602 kHz (with the MW tuning interval set at 9 kHz) 530-1,710 kHz (with the MW tuning interval set at 10 kHz) SW 5.95-17.90 MHz (with the SW tuning interval s

8、et at 5 kHz) Intermediate frequency450 kHz AntennaAM loop antenna External antenna terminal RadioFans.CN 收音机爱 好者资料库 2 Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tentalum capacitor may be damaged by heat. TABLE OF CONTENTS 1.GENERAL

9、3 2.TEST MODE 5 3.DIAGRAMS 6 3-1.Circuit Boards Location 6 3-2.Printed Wiring Board Panel Section 7 3-3.Schematic Diagram Panel Section 9 3-4.Printed Wiring Board Main Section 12 3-5.Schematic Diagram Main Section 15 3-6.Printed Wiring Board and Schematic Diagram Amp/Key con Section 19 3-7.Printed W

10、iring Board and Schematic Diagram Mic Echo/AV in Section 23 3-8.Printed Wiring Board and Schematic Diagram Power Section 26 3-9.IC Pin Function 29 3-10. IC Block Diagrams 31 4.EXPLODED VIEWS 4-1.Main Section 33 4-2.Panel Section 34 5.ELECTRICAL PARTS LIST 35 SAFETY-RELATED COMPONENT WARNING! COMPONE

11、NTS 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. General Power requirements Thai model:22

12、0-240V AC, 50/60 Hz Other models:110-120V or 220-240V AC, 50/60Hz Adjustable with voltage selector Power consumption230watts Dimensions (w/h/d)Approx. 280 205 336 mm MassApprox. 7.0kg Design and specifications are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 3 SECTION 1 GENERAL FRONT PA

13、NEL 1 2 3 4 5 6 7 8 9 ! ! ! ! ! ! ! ! ! !# # # # # $ # # # # 1KARAOKE PON/MPX button 2DSP button 3EFFECT ON/OFF button 4MUSIC button 5MOVIE button 6GAME button 7P FILE button 8MEMO button 9DBFB button !VOLUME !GROOVE button !TUNER BAND button !STEREO/MONO button !FUNCTION button !MIC LEVEL/ECHO VOL

14、!MIX MIC 1 jack !MIX MIC 2 jack !PHONES jack !EDIT button PLAY MODE button 1/ALL DISCS button REPEAT button HIGH FREQ button ENTER/NEXT button MULTI JOG STATION dial LOW FREQ button MEMORY button TUNING MODE button FLASH button #LOOP button #WAVE button #AV INPUT jack #CLOCK TIMER SET button #TIMER

15、SELECT button #KEY CONTROL button #KEY CONTROL n button #DOLBY PROLOGIC button #C. MODE button #DISPLAY/DEMO button $POWER button RadioFans.CN 收音机爱 好者资料库 4 BACK PANEL $SYSTEM CONTROL $MD/VIDEO 1 jack $FRONT SPEAKER terminal $SUPER WOOFER jack $VIDEO OUT jack $CENTER SPEAKER terminal $REAR SPEAKER te

16、rminal $VOLTAGE SELECTOR switch (EXCEPT TH, KR) $ANTENNA terminal Abbreviation TH : Thai KR : Korean $ $ $ $ $ $ $ FL DISPLAY/KEY LED TEST MODE Press the REPEAT, ENTER/NEXT and SURROUND buttons simultaneously. 1.All FL segments and all LEDs turn on. 2.To access the microprocessor information, press

17、the P FILE key. Each pressing of the P FILE key advances the display on the FL tube in the following sequence. 3. To check the encoder, press the MUSIC key. The following display appears on the FL tube. K0J0V0 The number after K indicates the number of times that the key is pressed. The key which wa

18、s pressed in the past, is not counted. The key which is pressed hereafter is counted. Pressing any key increases the number after K. The number after J indicates the number of rotations that the JOG dial is rotated. Turning the JOG dial clockwise increases the number after J. Turning the JOG dial co

19、unter-clockwise decreases the number after J. The number after V indicates the number of rotations that the VOLUME dial is rotated. Turning the VOLUME dial clockwise increases the number after V. Turning the VOLUME dial counter- clockwise decreases the number after V. To exit this mode, perform the

20、Cold Reset (reset clearing memory) as described below. GENERAL TEST MODE (INCLUDING AMPLIFIER AND TUNER) Press the REPEAT, ENTER/NEXT and CLOCK TIMER SET buttons simultaneously while the main power is on. 1.Sound volume display segment starts blinking. 2.The tuning enters the PRESET mode. 3.Rotating

21、 the VOLUME control clockwise increases the volume level to maximum. Rotating the VOLUME control counter-clockwise decreases the volume level to minimum. 4.Pressing the MUSIC key decreases the equalizer curve to minimum and EQ CHECK appears on the display. Pressing the MOVIE key increases the equali

22、zer curve to maximum. Pressing the GAME key makes the equalizer curve flat. 5.Pressing any of the DBFB, GROOVE or SURROUND key disappears EQ CHECK on the display. To exit this mode, perform the Cold Reset (reset clearing memory) as described below. SECTION 2 TEST MODE AGING MODE 1.CD aging mode To e

23、xecute the CD aging, set the three discs to the CD tray and set the function to CD. REPEAT, ENTER/NEXT and LOOP buttons simultaneously. The CD aging mode starts and the disc calendar starts blinking. 2.Tape aging mode To execute the tape aging, set the two tapes to the tape A and B drives. Set the f

24、unction to TAPE. Press the REPEAT, ENTER/ NEXT and LOOP buttons simultaneously. Press the A forward key to start the tape aging mode. AGING appears on the display. CD SERVICE MODE Turn on the main power. Press the REPEAT, ENTER/NEXT and KARAOKE PON/MPX buttons simultaneously. VACS toggles between ON

25、 and OFF. VACS LEVEL DISPLAY Turn on the main power. Press the EDIT, ENTER/NEXT and KARAOKE PON/MPX buttons simultaneously. VACS level appears on the display. CD SHIP MODE Turn on the main power. Press the PLAY MODE and POWER buttons simultaneously. The main power is turned off and LOCK appears on t

26、he display. TUNER STEP CHANGE Turn on the main power. Set the function to TUNER. Select MW band from the present tuning. Turn off the main power. Press the ENTER/NEXT and POWER buttons simultaneously. The main power is turned on and the changed step appears on the display. MD/VIDEO 1 FUNCTION CHANGE

27、 Press the FUNCTION and POWER buttons simultaneously while the main power is off. When the function is set to VIDEO 1, the function is changed to MD and MD appears on the display. When the function is set to MD, the function is changed to VIDEO 1 and VIDEO 1 appears on the display. COLD RESET (Reset

28、 which clears memory.) Press the REPEAT, ENTER/NEXT and DISPLAY buttons simultaneously at any time. The system is reset while clearing memory. HOT RESET (Reset which does not clear memory.) Press the REPEAT, ENTER/NEXT and TIMER SELECT buttons simultaneously at any time. The system is reset without

29、clearing memory. STR microprocessor version number HCD microprocessor version number VCD microprocessor version number (VCD model only) Model name Destination 3-1.CIRCUIT BOARDS LOCATION SECTION 3 DIAGRAMS PRI BOARD SEC BOARD PANEL BOARD AVIN BOARD JOG BOARD VOLUME BOARD MIC ECHO BOARD MAIN BOARD SU

30、R BOARD AMP-A BOARD ENCAPSULATED COMPONENT 5 6 SUPPLY POWER BOARD SURROUND AMP BOARD KEY-CON BOARD 29 3-9.IC PIN FUNCTION IC501 TMP87CM75F-6623 (DISPLAY CONTROL) Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 4

31、7 48 49 50 I/O O I O O O O I I O I I O I I I I I I I I I I I/O I/O O O O O O O O O O I I I I I I I I Description Not used Power supply (35V) Transfer clock output serial data Serial data input Serial data output Chip enable output Latch output to IC504 H : D542, D543 ON Stereo signal input Tuned sig

32、nal input Power supply (Ground) Oscillator connection terminal (8MHz) Oscillator connection terminal (8MHz) Reset signal input terminal Oscillator connection terminal (32.768kHz) Oscillator connection terminal (32.768kHz) Not used (Ground) AC Power supply off RDS DATA input RDS clock input SIRCS sig

33、nal input JOG dial encoder input Volum encoder input Volum encoder input JOG dial encoder input AUB input 12C clock I/O 12C data I/O AUB output Power supply (5V) Power supply (Ground) Latch output to IC105 Latch output to IC2002 Mute output to transistorL : Mute ON DBFB level control outputL : DBFB

34、HIGH Latch output to IC6003 H : Key con ON L : SP relay ON PRO LOGIC RELAY output Key data input (A/D converter) Key data input (A/D converter) Key data input (A/D converter) Spectrum analyzer signal input Spectrum analyzer signal input Spectrum analyzer signal input Spectrum analyzer signal input I

35、nput for model select Power supply for analog (Ground) Power supply (+5V) Power supply (Ground) Pin Name NC VG COM CLK ST DATA IN COM DATA ST CE LED LAT POWER ON/OFF STEREO TUNED Vss X OUT X IN RESET XT OUT XT IN GND BACK UP RDS DATA RDS CLK SIRCS IN JOG IN B VOL IN B VOL IN A JOG IN A AUB IN 12C CL

36、K 12C DATA AUB OUT VDD Vss EQ LAT VR LAT TA MUTE VIDEO MD KEY CON LAT KEY CON ON/OFF POWER ON/OFF P LOG RELAY KEY IN 0 KEY IN 1 KEY IN 2 SPEANA 0 SPEANA 1 SPEANA 2 SPEANA 3 SUFFIX VASS VAREF VDD 30 Pin No. 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 8

37、2 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 I/O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O Description H : MUTEL : Signal Receiving Not used Pin Name FL1G FL2G FL3G FL4G FL5G FL6G FL7G FL8G FL9G FL10G FL11G FL12G FL13G FL14G FLP1 FL

38、P2 FLP3 FLP4 FLP5 FLP6 FLP7 FLP8 FLP9 FLP10 FLP11 FLP12 FLP13 FLP14 FLP15 FLP16 FLP17 FLP18 FLP19 FLP20 FL-P21 FLP22 FLP23 FLP24 FLP25 FLP26 FLP27 FLP28 FLP29 FLP30 FLP31 FLP32 FLP33 FLP34 ST MUTE NC Grid output to FL501 Segment output to FL501 31 3-10. IC BLOCK DIAGRAMS IC3001 LA2786 IC3000 LV1016

39、1 2 3 4 5 6 7 8 9 15 10 11 12 + 13 14 16 21 18 19 25 17 24 22 2320 34 32 33 29 30 35 28 31 27 26 36 40 39 38 37 41 42 NOISE FILTER NOISE CH BALANCE CONTROL VR CONTROL LPF V REF VR VR NOISE GENERATOR VCAVCA VCAVCA VCAVCA VCAVCA LPF LPF RECTRECTRECTRECT P. S.P. S. CMODE MUTE DIVIDEROSC CONTROL CTRIM L

40、OG DIFF LOG DIFF DUAL T CONTROL L-IN R-IN VSS CLK DATA VCC L-OUT R-OUT S-OUT C-OUT ENABLE OSC1 CMODE-CAP. C-TRIM DC CUT R-BPF1 R-BPF2 R-BPF3 DC CUT DC CUT L-R RECT L+R RECT VCS-TH VCS-1 VCS-2 BPF1 BPF2 VREF S-CH DC OUT C-CH DC OUT L-CH DC OUT R-CH DC OUT VREF L-BPF1 L-BPF2 L-BPF3 DC CUT DC CUT R REC

41、T L RECT VLR-TH VLR-1 VLR-2 156 + + 201918171615141321222324 234789101211 + DEC IN-FILTER (40kHz) VDD ADM-CONTSRAM ADM OUT-FILTER (7k/5k) B-NR DC-OUT VOL/MUTE S-TRIM INV-PHASE R+DELAYL+DELAY A B A B A B A B A B A B A B LR L+R (6dB) A B A.GND L-OUT R-OUT VREF S-OUT DELAY-OUT S-IN R-IN L-IN VCC NR-DET

42、 ENABLE DATA CLK D.GND DC-CUT VDD OSC OSC NR-IREF DC-CUT 32 12345678 ADCONT DA1CONT KEY DOWN KEY UP DAIINTIN ADINTOUT ADINTIN LPF1 REFREFREFREF HPFLPF2MIX CLKO/KEY0 SDATA/KEY1 SCK/KEY2 STROBE/KEY3 KEY4 KEY5 REF GND VCC MODE2 MODE1 DAIINTOUT LPF1IN LPF1OUT HPFIN HPFOUT LPF2IN LPF2OUT MIXIN MIXOUT DA2

43、CONT 91011121314 15 16 17 18 19 20 21 22 23 24 25 26 27 28 + LOGIC D/A RESETRAM A/D CLOCK GENERATOR REF + + + OSCILLATOR 1/2 VCC AUTO RESET LPF1 MAIN CONTROL A/D 20KBIT SRAM LPF2D/A 1234567 891014131211 CLOCK RESET MO MI D1DO0 DO1 VCC CLOCK REF OP2IN OP2OUT LPF2IN LPF2OUT LPF1IN LPF1OUT OP1OUT OP1IN

44、 CC1 CC2 GND 12345678 OVER LOAD DET F/F OFFSET DET LATCH/ AUTORESET VCC ON MUTE AC OFF DET VCC IC850PC1237HA + + + + + + + SBAND GRAPHIC EQUALIZER SBAND GRAPHIC EQUALIZER U-CON INTER FACE + + + + + + + + 1234567891020191817161514131211 21222324 64636261605958575655454647484950515253544443 4241 25 26

45、 27 28 29 30 31 32 33 34 40 39 38 37 36 35 80 79 78 77 76 75 74 73 72 71 65 66 67 68 69 70 KEY OUT1 NC3 REC 1A REC 1B REC 1C NC4 F1 F1 F1 O1 F1 IN1 F2 F1 F2 O1 F2 IN1 F3 F1 F3 O1 F3 IN1 F4 F1 F4 O1 F4 IN1 F5 F1 F OUT1 VOL OUT1 VOL IN1 BBIN1 BB11 BB12 BBIN2 VOL OUT2 VOL IN2 F OUT2 F5 F2 F4 IN2 F4 O2

46、F4 F2 F3 IN2 F3 O2 F3 F2 F2 IN2 F2 O2 F2 F2 F1 IN2 F1 O2 F1 F2 NC6 REC 2C REC 2B REC 2A NC7 KEY OUT2 BB22 BUF IN1 BUF OUT1 NC5 AVDD DGND LATCH DATA CLOCK DVDD PORT C PORT B PORT A BUFOUT1 BUFIN1 BB21 KEY IN1 DELAY OUT DELAY IN NC2 IN 1B NC1 IN 1A AGND AVSS IN 2A NC9 IN 2B NC8 BPF IN BPF OUT KEY IN2

47、IC105M62427FP-A IC6002 M65850PIC6003 M65847FP SECTION 4 EXPLODED VIEWS Note: -XX, -X mean standardized parts, so they may have some differences from the original one. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering t

48、hese items. The mechanical parts with no reference number in the exploded views are not supplied. Abbreviations CH: ChineseMY: Malaysia SP: SingaporeTH: Thai IA: IndonesianKR: Korean The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number

49、 specified. 33 4-1.MAIN SECTION 13-363-099-11SCREW (CASE 3 TP2) * 24-991-364-11CASE * 31-666-059-11SEC BOARD * 41-666-069-11PRI BOARD * 5A-4398-466-A SURROUND AMP BOARD,COMPLETE (MY,SP,KR,CH) * 5A-4403-217-A SURROUND AMP BOARD,COMPLETE (TH) * 5A-4403-699-A SURROUND AMP BOARD,COMPLETE (IA) 61-233-545-21ENCAPSULATED COMPONENT (TH,KR) 61-233-546-21ENCAPSULATED COMPONENT (EXCEPT TH) * 71-666-070-11AMP-A BOARD * 84-991-361-41PANEL (VCD), BACK (MY,SP) * 84-991-361-51PANEL (VCD), BACK (CH) * 84-991-3