Sony-STEX770-tun-sm 电路图 维修手册.pdf

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1、ST-EX770 AEP Model UK Model SERVICE MANUAL MICROFILM Ref. No.Part No. Description 9-922-857-11 Sony Corporation Home A&V Products Company FM STEREO/FM-AM TIMER TUNER 98D001648-1D Printed in Japan 1998.4 Published by Quality Assurance Dept. (Shibaura) ST-EX770 is the tuner section in MHC-EX660 and DH

2、C-EX770MD. The mechanical and electorical specifications of ST-EX770 is almost same as ST-EX77 AEP/UK model. So this manual contains only the points which differ from ST-EX77. For the informations not contained in this manual, please refer to the ST-EX77 service manuals (9-960-933- ) previously issu

3、ed. PARTS LIST(The difference between ST-EX77 and ST-EX770) Page * 64-985-904-11PANEL(ST), BACK 51X-4948-355-1PANEL ASSY, FRONT 53X-4947-762-1BUTTON(TIMER) ASSY 544-985-890-01BUTTON(MODE) 56X-4948-356-1BUTTON(MEMO) ASSY (MEMORY, ST/MONO) 574-985-892-21BUTTON(PLAY) (TUNER/BAND, TUNING MODE) 614-985-9

4、25-01KNOB(JOG) Ref. No.Part No.Description 22 ST-EX77 ST-EX770 Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. * 64-985-904-31 PANEL(ST), BACK 51X-4949-865-1 PANEL ASSY, FRONT 53X-4949-932-1 BUTTON(TIMER

5、) ASSY 544-985-890-11 BUTTON(MODE) 56X-4949-933-1 BUTTON(MEMO) ASSY (MEMORY, ST/MONO) 574-985-892-41 BUTTON(PLAY) (TUNER/BAND, TUNING MODE) 614-985-925-11 KNOB(JOG) 23 RadioFans.CN 收音机爱 好者资料库 MICROFILM ST-EX77 AEP Model UK Model E Model SERVICE MANUAL This set is the tuner section in MHC-EX66,DHC-EX

6、77MD/MD77. FM STEREO/FM-AM TIMER TUNER SPECIFICATIONS AEP, UK models: Hong Kong, Singapore models: 90 RadioFans.CN 收音机爱 好者资料库 2 TABLE OF CONTENTS Servicing Notes . 2 1.GENERAL Listening to the Radio .3 Labeling the Preset Stations .4 Using the Radio Data System (RDS) .5 2.DISASSEMBLY.7 3.ELECTRICAL

7、ADJUSTMENTS.8 4.DIAGRAMS 4-1.IC Pin Function Description.9 4-2.Printed Wiring Boards . 11 4-3.Schematic Diagram . 15 5.EXPLODED VIEWS. 22 6.ELECTRICAL PARTS LIST. 24 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PART

8、S 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. MODEL IDENTIFICATION Back Panel How to operate with a single unit. Normally, this set is not operated with its own. The exclusive jig

9、 (J-2501-078-A) and service box (PFJ-1) are nec- essary to operate the set with a single unit. Turn the power set of the service box ON. Then press the ENTER/NEXT button and SLEEP button at the same time to turn the power on. Connection: SERVICING NOTES KEY/FL tube/LED check mode. To enter KEY/FL tu

10、be/LED check mode, press the ENTER/NEXT and REC buttons at the same time. Under mode, every time when press any key or turn MULTI CONTROLLER knob, change to next situation. 1 All LED indicators light on 2 All FL tube indicators light on 3 A part of FL tube light on mode 1. (Indicated ST-SEG) 4 A par

11、t of FL tube light on mode 2. (Indicated RDS-SEG) 5 KEY check mode Note: 1) All LED light on mode is kept, when buttons which is pressed to enter all LED light on mode, release same time. When release them separate timing, it is moved to next All LED light on mode. 2) After all LED light on mode, li

12、ght on point remove one by one, when any button pressed or MULTI CONTROLLER knob turned. 3) Under KEY check mode, every time buttons pressed numeri- cal value of “KEY” in FL tube increase. And that time, numerical value of “ECDR” increase when MULTI CONTROLLER button turn to + direction, and it decr

13、ease turn to direction. When you want to finish this mode, unplug the power of amplifier or turn off PFJ-1 of POWER switch. 4-985-904-1 : AEP, UK model 4-985-904-2 : Hong Kong, Singapore model POWER SW FH-E939, 838,937 CDP/TCCN904 17P CN902 7P CN101 7P JIG (J-2501-078-A) SERVICE BOX (PFJ-1) SET SYST

14、EM CONTROL CORD WITH CONNECTOR 7P (attached to set) CORD WITH CONNECTOR 17P (attached to PFJ-1) RadioFans.CN 收音机爱 好者资料库 3 This section is extracted from instruction manual. SECTION 1 GENERAL AEP, UK models AEP, UK models: Hong Kong, Singapore models Hong Kong, Singapore models: Hong Kong, Singapore

15、models: AEP, UK models: For AEP, UK models: For Hong Kong, Singapore models: 4 For Hong Kong, Singapore models: Hong Kong, Singapore models: AEP, UK models: For AEP, UK models: http:/getMANUAL.com 5 (AEP, UK models only) 6 Precautions in Repairing If the front unit fails, it is difficult to repair t

16、he inner circuits, so replace the entire front end unit. The FM TUNED level must be adjusted after the AM TUNED level adjustment has completed. AM SECTION AM Tuning Level Adjustment Setting : BAND switch : MW(AM) SECTION 3 ELECTRICAL ADJUSTMENTS AM RF signal generator 30 % amplitude modulation by 40

17、0 Hz signal Carrier frequency : 999 kHz (at 9 k step) 1,000 kHz (at 10 k step) Output level : 25 dB loop antenna set loop antenna supplied accessories 60 cm AM antenna terminal field strength dB(V/m)= RF SSG output level dB (V/m)26 dB Procedure: 1.Set loop antenna A so that the loop antenna B input

18、level be- comes 55 dB/m. 2.Tune the set to 999 kHz or 1,000 kHz. 3.Adjust RV1 so that the TUNED indicator goes on. Adjustment Location : MAIN board. FM SECTION FM Tuning Level Adjustment Setting : BAND switch : FM Adjustment Location : MAIN BOARD Component Side CN101TM1 RV2 FM Tuning Level Adjustmen

19、t RV1 AM Tuning Level Adjustment FE2 IC1 CN102 SECTION 2 DISASSEMBLY Procedure: 1.Tune the set to 98 MHz. 3.Adjust RV2 so that the TUNED indicator goes on. Adjustment Location : MAIN board. 7 8 FM RF Stereo signal generator Carrier frequency : 98 MHz Moduration : AUDIO 1kHz,75 kHz deviation (100%) O

20、utput level : 26 dB (17.8 V) set FM antenna terminal (75 coaxial) Note: Follow the disassembly procedure in the numerical order given. 1 two screws (case 3 TP2) 1 two screws (case 3 TP2) 4 three screws (BVTP3 10) 8 main board 3 flat wire (19 core) (CN102) 7 two claws 2 case 6 claw 5 two screws (BVTP

21、3 8) SECTION 4 DIAGRAMS 4-1. IC PIN FUNCTION DESCRIPTION MAIN BOARD IC201 PD78013FGC-544-AB8 (SYSTEM CONTROL) 41X2O System main clock. (10 MHz) 42X1I 43GNDGround 44XT2O System sub clock. (32.768 kHz) 45XT1I 46GNDGround 47KEY IN K1I 48KEY IN K2IKey input. (analog) 49KEY INI 50GND 51GND 52GNDGround 53

22、GND 54GND 55AVDDAnalog power supply +5V. 56AVREFIAnalog system reference voltage input. 57GNDGround 58SDATAOFlourescent indicator tube data output. (IC601) 59SCKOFlourescent indicator tube clock output. (IC601) 60CSOFlourescent indicator tube chip select signal output. (IC601) 61RESETOFlourescent in

23、dicator tube reset signal output. (IC601) 62ERRORSI 63CORRECTIONONot used. (open) 64RECEIVEDO Pin No.Pin NameI/OFunction 1DESTINATIONI 2DESTINATIONI Destination selection input. 3DESTINATIONI 4DESTINATIONI 5IF +50I Not used. (Ground) 6IF 50O 7BACK UPIBack up mode input. 8NCNot used. (open) 9VssGroun

24、d 10POWEROPower ON/OFF switch control. 11MUTEOMute output. 12ANALOG-BUS 13NC 14NC Not used. (open) 15AM MONO 16AM/FM 17IFNG 18STEREOIStereo signal input. 19SIGNALITuned signal input. 20DATA INIData input. (IC51) 21DATA OUTOData output. (IC51) 22CLOCKOClock output. (IC51) 23CEOChip enable output. (IC

25、51) 24VssGround 25NC Not used. (open) 26NC 27ONCEOLED drive output (Not used) 28DAILYO 29RECO 30SLEEPOLED drive output. 31ENCODERO 32NEXTO 33ENCODER IN BIEncoder input. (B) 34AU BUS OUTOAudio bus output. 35RESETISystem reset input. 36AU BUS INIAudio bus input. 37ENCODER IN AIEncoder input. (A) 38RDS

26、-CLOCKIRDS clock input. 39RDS-DATAIRDS data input. 40VDDPower supply 5V. Pin No.Pin NameI/OFunction 9 10 20 Waveforms 1 IC51 1 2 IC201 $ 3.1Vp-p 10 MHz 2.4 Vp-p 4.5 MHz 3 IC201 $ 1.8 Vp-p 32.768 kHz 4 IC302 ! 2.8 Vp-p 4.332 MHz IC Block Diagrams IC1LA1835 ALC BUFF AM OSC AM MIX AM RF. AMP AGC S METE

27、R LEVEL DET FM IF AM DET S-CURVE AM/FM IF BUFF REG TUNING DRIVE COMP GND AM/FM SW VCC PHASE DET PILOT DET VCO FF STEREO DRIVE TRIG STEREO SW MUTE FFFF FM IF FM DET DECODER ANTI BIRDIE 12345678910 2019181716 1514131211 21222324252627282930 FM-SD AM-OSC FM-AFC AM-RF-IN AGC AM. CUT AM/FM VCO MPX-IN OUT

28、 R OUT L AMP-IN R AMP-IN L R LVCO-STOP ST-LED AM/FM AM. SD AM. SD IF-BUFF VCC DET FM-IN AM-MIX IF REG AM-IF GND TU-LED FM AM 21 PHASE DETECTOR CHARGE PUMP SWALLOW COUNTER 1/16, 1/17 4BITS 12BITS PROGRAMMABLE DRIVER UNIVERSAL COUNTER REFERENCE DIVIDER POWER ON RESET 1/2 C2B I/F 12345678910 2019181716

29、1514 13 1211 21222324 XOUT VSS AOUT2 AIN2 PD2 PD1 AIN1 AOUT1 VDD FMIN AMIN IO2 XIN D0 CL D1 CE BO5 BO1 BO2 BO3 BO4 IO1 IFIN UNLOCK DETECTOR DATA SHIFT REGISTER LATCH IC51LC72130 IC302SAA6579 QUALITY BIT GENERATOR OSCILLATOR AND DIVIDER RECONSTRUCTION FILTER 57KHz BANDPASS (8th ORDER) ANTI- ALIASING

30、FILTER DIFFERENTIAL DECODER BIPHASE SYMBOL DECODER COSTAS LOOP VARIABLE AND FIXED DIVIDER CLOCK REGENERATION AND SYNC REFERENCE VOLTAGE TEST LOGIC AND OUTPUT SELECTOT SWITCH CLOCKED COMPARATOR 91016151211 12345678 1413 QUAL RDDA Vref MUX VDDA VSSA CIN SCOUT TSTLD TEST VSSD VDDB OSCI OSCO T57 RDCL 22

31、 SECTION 5 EXPLODED VIEWS NOTE: -XX and -X mean standardized parts, so they may have some difference from the original one. Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts ColorCabinets Color Items marked “” are not stocked since they are seldom required for rou

32、tine service. Some delay should be anticipated when ordering these items. The mechanical parts with no reference num- ber in the exploded views are not supplied. (1) CHASSIS SECTION Abbreviation HK: Hong Kong SP : Singapore 17-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S 24-977-699-11 LEG (F) 33-363-099-01

33、 SCREW (CASE 3 TP2) * 44-985-899-11 CASE 57-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S * 64-985-904-11 PANEL (ST), BACK (AEP, UK) * 64-985-904-21 PANEL (ST), BACK (HK, SP) * 7A-4398-064-A MAIN BOARD, COMPLETE (AEP, UK) * 7A-4398-069-A MAIN BOARD, COMPLETE (HK, SP) 84-965-822-01 FOOT Ref. No.Part No.Descri

34、ptionRemarkRef. No.Part No.DescriptionRemark 4 3 5 6 1 8 2 1 3 7 not supplied 23 (2) FRONT PANEL SECTION 61 60 56 57 55 58 55 54 53 51 52 not supplied 51X-4948-355-1 PANEL ASSY, FRONT (AEP, UK) 51X-4948-357-1 PANEL ASSY, FRONT (HK, SP) 524-962-708-01 EMBLEM (4-A), SONY 53X-4947-762-1 BUTTON (TIMER)

35、ASSY 544-985-890-01 BUTTON (MODE) 554-951-620-01 SCREW (2.6X8), +BVTP 56X-4947-849-1 BUTTON (M/A) ASSY (MANUAL, AUTO, ENTER) (HK, SP) 56X-4948-356-1 BUTTON (MEMO) ASSY (MEMORY, ST/MONO) (AEP, UK) Ref. No.Part No.DescriptionRemarkRef. No.Part No.DescriptionRemark 574-985-892-11 BUTTON (PLAY) (TUNER/B

36、AND, PRESET) (HK, SP) 574-985-892-21 BUTTON (PLAY) (TUNER/BAND, TUNING MODE) (AEP, UK) * 58A-4398-065-A PANEL BOARD, COMPLETE (AEP, UK) * 58A-4398-070-A PANEL BOARD, COMPLETE (HK, SP) 591-773-108-11 WIRE (FLAT TYPE) (19 CORE) 604-988-161-01 SPRING, RING 614-985-925-01 KNOB (JOG) 59 http:/getMANUAL.c

37、om 24 NOTE: Due to standardization, replacements in the parts list may be different from the parts speci- fied in the diagrams or the components used on the set. -XX and -X mean standardized parts, so they may have some difference from the original one. RESISTORS All resistors are in ohms. METAL: Me

38、tal-film resistor. METAL OXIDE: Metal oxide-film resistor. F: nonflammable Abbreviation HK: Hong Kong SP: Singapore Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when order- ing these items. SEMICONDUCTORS In each case, u: , for

39、 example: uA. .: A. .uPA. . : PA. . uPB. .: PB. .uPC. . : PC. . uPD. .: PD. . CAPACITORS uF: F COILS uH: H SECTION 6 ELECTRICAL PARTS LIST The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. Ref. No.Part No.DescriptionRemar

40、kRef. No.Part No.DescriptionRemark When indicating parts by reference number, please include the board. *A-4398-064-A MAIN BOARD, COMPLETE (AEP, UK) *A-4398-069-A MAIN BOARD, COMPLETE (HK, SP) * *4-924-988-11 PLATE (ST), GROUND 7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S C11-162-306-11 CERAMIC0.01uF20%16

41、V C21-126-967-11 ELECT47uF20%16V C31-162-306-11 CERAMIC0.01uF20%16V C41-164-159-11 CERAMIC0.1uF50V C51-164-159-11 CERAMIC0.1uF50V C61-164-159-11 CERAMIC0.1uF50V C71-126-967-11 ELECT47uF20%16V C81-162-306-11 CERAMIC0.01uF20%16V C91-162-306-11 CERAMIC0.01uF20%16V C101-162-306-11 CERAMIC0.01uF20%16V C1

42、11-126-964-11 ELECT10uF20%50V C121-126-959-11 ELECT0.47uF20%50V C131-126-960-11 ELECT1uF20%50V C141-126-960-11 ELECT1uF20%50V C151-126-964-11 ELECT10uF20%50V C161-126-964-11 ELECT10uF20%50V C171-126-964-11 ELECT10uF20%50V C181-126-964-11 ELECT10uF20%50V C191-136-158-00 FILM0.027uF5%50V C201-136-158-

43、00 FILM0.027uF5%50V C211-137-436-11 FILM0.0039uF5%50V C221-137-436-11 FILM0.0039uF5%50V C231-126-960-11 ELECT1uF20%50V C241-162-294-31 CERAMIC0.001uF10%50V C251-162-600-11 CERAMIC0.0047uF30%16V C261-126-967-11 ELECT47uF20%16V C271-126-962-11 ELECT3.3uF20%50V C281-164-159-11 CERAMIC0.1uF50V C291-126-

44、964-11 ELECT10uF20%50V C301-164-159-11 CERAMIC0.1uF50V C321-102-527-11 CERAMIC82PF5%50V (AEP, UK) C331-162-306-11 CERAMIC0.01uF20%16V C351-162-306-11 CERAMIC0.01uF20%16V C361-162-306-11 CERAMIC0.01uF20%16V C371-164-159-11 CERAMIC0.1uF50V C381-162-198-31 CERAMIC8.2PF10%50V C401-162-306-11 CERAMIC0.01

45、uF20%16V C411-162-306-11 CERAMIC0.01uF20%16V C431-162-294-31 CERAMIC0.001uF10%50V C441-164-159-11 CERAMIC0.1uF50V C451-164-159-11 CERAMIC0.1uF50V C471-164-095-11 CERAMIC0.01uF10%16V (HK, SP) C511-102-518-11 CERAMIC33PF5%50V C521-102-514-11 CERAMIC22PF5%50V C531-126-964-11 ELECT10uF20%50V C541-164-15

46、9-11 CERAMIC0.1uF50V C551-126-933-11 ELECT100uF20%10V C561-162-294-31 CERAMIC0.001uF10%50V C581-162-306-11 CERAMIC0.01uF20%16V C641-164-159-11 CERAMIC0.1uF50V C651-126-933-11 ELECT100uF20%16V C671-162-306-11 CERAMIC0.01uF20%16V C711-126-961-11 ELECT2.2uF20%50V C731-164-159-11 CERAMIC0.1uF50V C751-16

47、2-306-11 CERAMIC0.01uF20%16V C911-162-286-31 CERAMIC220PF10%50V (AEP, UK) C921-162-286-31 CERAMIC220PF10%50V (AEP, UK) C931-162-286-31 CERAMIC220PF10%50V (AEP, UK) C941-162-306-11 CERAMIC0.01uF20%16V (AEP, UK) C951-164-159-11 CERAMIC0.1uF50V C961-164-159-11 CERAMIC0.1uF50V C971-162-294-31 CERAMIC0.001uF10%50V (AEP, UK) C981-162-294-31 CERAMIC0.001uF10%50V (AEP, UK) C1111-126-942-61 ELECT1000uF20%25V C1121-164-159-11 CERAMIC0.1uF50V C1131-126-933-11 ELECT100uF20%10V C1211-104-666-11 ELECT220uF20%25V C1221-104-666-11 ELECT220uF20%25V C1231-126-952-