Kenwood-SE-7-G-Service-Manual电路原理图.pdf

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1、STEREO INTEGRATED AMPLIFIER/TUNERR-SE7/SE-7(G)SERVICE MANUAL1997-10/B51-5373-00 (K/K) 3191stereo integrated amplifier/tuneron/standbyphonesdownupvolumecontrolpureinput selectorN.B.pureenterbandauto/monoturningSPEAKER(6 16 )RLSUBWOOFERPRE OUTFM75FM300GNDAMANTENASYSTEMCONTROLRLININCDAUXREC OUTPLAY OUT

2、REC OUTPLAY OUTTAPEMDPanel *(A60-)Front glass(B10-2373-03)Indicator(B12-0322-04)Panel *(A60-)AC power cord *(E30-)Lock terminal board *(E70-)Phono jack(E63-1014-05)Phono jack(E63-0046-15)Phono jack(E63-0047-15)Rectangular receptacle(E08-0312-05)Metallic cabinet *(A01-)Lock terminal board(E20-0476-05

3、)Power cord bushing(J42-0083-05)Knob(K29-6744-04)Escutcheon(B07-2363-04)Indicator(B12-0320-04)Knob(K29-6358-04)Knob(K29-6750-03)Escutcheon(B07-2367-03)(HM-701)PRECAUTIONS FOR REPAIR For the SERIAL TEST CODE LIST of the circuit description, see Service manual (B51-5210-00) of R-SA7. No connection of

4、ground line if disassemble the unit. Please connection the ground line on rear panel, PCBs, Chassis and some others.* Refer to parts list on page 25.R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW2FM indoor antenna (1)(T90-0182-15) : KM(T90-0806-05) : ETDISPLAYSLEEPTAPEREMOTE CONTROL UNITRC-SE91 2 3 RAN

5、DOM4 5 6 CLEAR7 8 9 P.MODEO.T.E. 0 +10 EDITTUNERBANDINPUT N.B. MUTEVOLUMECONTROLMDCDP.CALLBatteries (R6/AA) (2)AM loop antenna stand (1)(J19-3645-05)AM loop antenna (1)(T90-0820-05)Audio cords (2)(E30-0615-05)System control cord (1)(E30-2628-05)Battery cover (A09-0374-08)Remote control unit (1)(A70-

6、1154-05) : KM (A70-1155-05) : TER-SE7/SE-7(G)CONTENTS / ACCESSORIES2CONTENTS / ACCESSORIES.2CIRCUIT DESCRIPTION.3ADJUSTMENT.8PC BOARD.10SCHEMATIC DIAGRAM.13EXPLODED VIEW.24PARTS LIST.25SPECIFICATIONS.Back coverContentsAccessoriesSystem configurationSYSTEM NAMEAMP/TUNERCD PLAYERSPEAKERHM-701R-SE7DP-S

7、E7LS-SE7R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW3R-SE7/SE-7(G)3CIRCUIT DESCRIPTIONChannelBANDE TYPEChannelBANDE TYPE01chFM87.50MHz11chFM90.00MHz02chFM97.50MHz12chFM98.00MHz03chFM108.00MHZ13chFM98.50MHz04chAM630kHz14chFM106.00MHz05chAM990kHz15chAM531kHz06chAM1440kHz16chAM990kHz07chFM87.50MHz17chAM

8、1602kHz08chFM87.50MHz18chFM87.50MHz09chFM87.50MHz19chFM87.50MHz10chFM89.10MHz20chFM87.50MHz1. INITIAL STATE(1) AMP-related blockEPOWEROFFESELECTOR SOURCETUNEREDISPLAYSELECTOREN.B. CIRCUITOFFEA CLASS VOLUME VALUE1.40 STEPEAB CLASS VOLUME VALUE7 STEPEPURE MODENORMAL (AB CLASS)EAUTO POWER SAVEOFFEMULTI

9、 CONTROL MODEINPUT SEL.(R-SE9 only)(2) TUNER-related blockEBANDFMEFREQUENCYLower-limit value of receiving frequency.FM87.5 MHzAM531 kHzEAUTO/MANUALAUTOEP.CH MEMORYLast frequencyELast P.CH01chERDS DATA TABLE MEMORYNO DATA(3) TIMER-rated blockECLOCKSTOP (AM12:00)EPROGRAMWORKING MODE OFFCONTENTS OF PRO

10、GR.ON=AM 12:00OFF=AM 12:00PLAY MODE=PLAYSELECTOR=TUNER(1ch)REC MODE OFFEO.T.TWORKING MODE OFFOTT ON TIMEAM 7:00(4) TEST PRESET FREQUENCY2. BACKUPThis function holds the current state of the unit even if theAC power of the receiver is turned OFF.(1) Operation outlineThe backup state set command signa

11、l (CE) of a microcom-puter is set low when the AC power is turned OFF. Themicrocomputer detects the signal and enters the stop state.The microcomputer is reset when the AC power is turnedON. The data for backup state confirmation is checked byreset processing.The microcomputer is initialized when th

12、e data wasdestroyed. If it is not destroyed, the microcomputer is startedin the backup state.EThe data for backup state confirmation is written in a RAMarea.EThe microcomputer is set to the STOP mode so as tosave the power consumption.EA backup state set command signal is detected by a timerinterrup

13、t of 1 msec.EThe backup guarantee period is set in a circuit.(2) Backup state settingEThe data (A596, 5A69H) for backup state confirmation iswritten in a RAM area.(3) Contents of backup data to be heldAMP EPOWER ON/OFFEDISPLAY MODEESELECTOR SOURCEEN.B. CIRCUIT MODEEA CLASS VOLUME VALUEEAB CLASS VOLU

14、ME VALUEEPURE A MODETUNER ELAST BANDEPRESET CHANNEL/RECEIVING STATION FRE-QUENCY/PI/TA/PTY/PSELAST RECEIVING STATION FREQUENCY AND PRE-SET CHANNEL (AM/FM) EPRESET MEMORY data (1ch40ch)EAUTO/MANUALCLOCK/TIMER ELAST CLOCK DATAEPROGRAMMED CONTENTS/PROGRAM TIMER WOR-KING MODE ON/OFFEO.T.T. SETTING TIME/

15、O.T.T. WORKING MODE ON/OFFThe initial setting is performed in a following event : 1. When backup memory data is destroyed when reset isapplied to the microprocessor.2. When the power cord is plugged in to the AC wall outletwhile pressing the on/standby key.R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW

16、6R-SE7/SE-7(G)4CIRCUIT DESCRIPTION3. DESTINATION LIST OF TUNER3-1 Destination List of Tuner4. TEST MODE4-1. InitializingThe system is initialized when the power is turned on whilepressing the on/standby key.(1) Contents of operationEAll the functions are initialized.4-2. AMP test mode using main uni

17、ts keys4-2-1. Entering the AMP test modeETurn on the power while pressing the BAND key.4-2-2. Canceling the AMP test modeEBy turning off the power, the system is initialized and thetest mode is canceled.4-2-3. Contents of AMP test mode(1) Automatic on/standbyONEThe POWER ON state is entered whenever

18、 the power isturned on while pressing the BAND key. All functions arethen initialized and activated in the all-lighting mode.ESub-clock oscillation diagnosis functionThe oscillation diagnosis (existence of oscillation andmeasurement of period) of a sub-clock is performedbefore the test mode is enter

19、ed. If the diagnosis result isOK, the system enters the test mode.If the diagnosis result is NG, the oscillation of the sub-clock is diagnosed again. If the result is OK, the systementers the test mode. If the diagnosis result is continu-ously NG five times, the system stops with ERR 1 andERR 2 disp

20、layed.(2) All-lighting modeEAll the fluorescent display indicators and LED lamps lightwhen the power is turned on while pressing the BANDkey.EAfter that, the all-lighting mode is canceled when anymain units key is pressed. The normal display obtainedwhen the selector is set to TUNER then appears.(3)

21、 OthersEThe AMP test mode is not terminated even if the selectoris set to positions other than TUNER.EIn the AMP test mode, the muting during mode selectionis not controlled. However, the operation during thepower-on sequence is the same as the normal operation.EThe SP protection operation is also t

22、he same as the nor-mal operation.EIn the AMP test mode using main units keys, the keysbelow provide a special operation according to the posi-tion where the selector is set. The main units keysexcept described below and the rotary encoder providethe normal operation.(4) When selector is set to TUNER

23、KeyOperationPURE A keyIncrements the P.CALL every time thiskey is pressed.N.B. key Decrement the P.CALL every time this key is pressed.ENTER keySelects the display cyclically in the order below every time this key is pressed.Write data in the unused area of E2PROM, then read thewritten data. If the

24、read data is the same as the writtendata, “RAM OK“ is displayed in the fluorescent displayindicator. If the former is different from the latter, “RAMNG“ is displayed.ASet the TUNER ATT to OFF and display the S level inhexadecimal when the ENTER key is pressed. (“ATTOFF *“ is displayed in the fluores

25、cent display indicator.)BSet the TUNER ATT to ON and display the S level inhexadecimal when the ENTER key is pressed. (“ATT ON*“ is displayed in the fluorescent display indicator.)* The special display using the ENTER key is continued untilthe next operation is carried out. (*: S LEVEL)When keys oth

26、er than ENTER are pressed in items to Babove, the TUNER ATT is set to OFF and the normal displayappears. The operation corresponding to the key that hasbeen pressed is performed in this case.(5) When selector is set to positions other than TUNERDesti-ReceiveChannelPLLDIODE SWnationBANDfrequencyspace

27、1FreferenceDSW1DSW2rangefrequencyD518D519FM87.5MHz100kHz+10.7MHz25kHzK1108.0MHzAM530kHz10kHz+450kHz10kHz111700kHzFM87.5MHz50kHz+10.7MHz25kHzE1108.0MHzAM531kHz9kHz+450kHz9kHz011602kHzFM87.5MHz50kHz+10.7MHz25kHzE3108.0MHz(RDS)AM531kHz9kHz+450kHz9kHz101602kHzMK2 or E1 is changed the setting “DSW1“.X1(D

28、SW1=1 : K2, 0 = E1)0 : NO DIODE1 : DIODEX : SWITCHING TRANSISTORENTER key Every time this key is pressed, master VOL-UME level is selected cyclically.INITIALIZE level MAX MID MIN Value of MasterVOLUMEPress the ENTER key.Press the PURE A key, then press the ENTER key.MAX8616.00MID408.00MIN10.20INITIA

29、LIZE71.40R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW7R-SE7/SE-7(G)5CIRCUIT DESCRIPTION AUTO key Selects the MUTE operation and equalizercyclically in the order below for operation display every timethis key is pressed.- - MUTE operation - Minimum - Maximum - Pre-condition-In the operation for except

30、 the AUTO key, become pre-condition equlizer .Pre condition : The equlizer becomes the condition to bepushed the AUTO key before(include N.B. circuit).(6) SERIAL TEST CODE LISTRefer to Service manual (B51-5210-00) of R-SA7 onpage 7. BAND key Every time this key is pressed, all the displaysgo off and

31、 the normal display is selected cyclically.4-3. RDS test mode using main units keys4-3-1. Entering the RDS test modeETurn on the power while pressing the TUNING UP key.4-3-2. Canceling the RDS test modeEBy turning off the power, the system is initialized and thetest mode is canceled.4-3-3. Contents

32、of RDS test modeEThe POWER ON state is entered whenever the power isturned on while pressing the TUNING UP key. All thefunctions are then initialized.EIn the RDS test mode using main units keys, the keysbelow provides a special operation according to the posi-tion where the selector is set. The main

33、 units keysexcept described below and the rotary encoder providethe normal operation.KeyOperationCLASS A keyPerforms the same operation as for remote control key “DISPLAY“ every time this key is pressed.INPUT SEL. keyPerforms the same operation as for remote control key “PTY“ every time this key is

34、pressed.N.B. keyPerforms the same operation as for remote control key “TA“ every time this key is pressed.ENTER keySelects the display cyclically in the order below every time this key is pressed.Write data in the unused area of EEPROM, then read thewritten data. If the read data is the same as the

35、writtendata, “RAM OK“ is displayed in the fluorescent displayindicator. If the former is different from the latter, “RAMNG“ is displayed.ASet the TUNER ATT to OFF and display the S level inhexadecimal when the ENTER key is pressed. (“ATTOFF *“ is displayed in the fluorescent display indicator.)BSet

36、the TUNER ATT to ON and display the S level inhexadecimal when the ENTER key is pressed. (“ATT ON*“ is displayed in the fluorescent display indicator.)* The special display using the ENTER key is continued untilthe next operation is carried out. (*: S LEVEL)When keys other than ENTER are pressed in

37、items to Babove, the TUNER ATT is set to OFF and the normal displayappears. The operation corresponding to the key that hasbeen pressed is performed in this case.4-4. SERIAL TEST MODE(1) Setting the serial test mode The unit is put into the serial test mode when a serial code“TEST ON“ is input durin

38、g the POWER-ON sequence.In the 16-bit serial test mode, serial code C27FH is input.EIn the serial test mode, all remote control keys and ordi-nary serial codes are disabled. Only the panel keys per-form the same operation as usually.(2) Canceling the serial test modeEThe serial test mode is canceled

39、 to return to the ordinarymode by inputting a “TEST OFF“ code (C27 EH). Afterthe ordinary mode was returned, the serial mode isreturned to the state before the test mode is entered.The backup operation is not initialized.EThe serial test mode is also canceled when the AC poweris turned OFF.(3) Cauti

40、onsEThe serial test code is prescribed as a 16-bit code only.EThe operations below are inhibited in the serial test mode. The operations mentioned above cannot be guaranteedwhen they are performed in the serial test mode.EAn identical code is output when the serial test modecode is input.R-SE7/SE-7(

41、G)(K) COVER( 97.11.28 0:22 AM yW10FL DISPLAY (FIP9GM6R)RESETCEREMOCONLEVEL INCLASS A LEDBIAS MIDBIAS HILOW RELAYHI RELAYSPEAKER RELAY(X09) J5(X14) IC2(X14) S2DATABUSYENC-CENC-D(X14) ED1(X05) IC2(X09) IC1(X14) IC3u-COMuPD78045FGF05791641331322PLL IC(LC72131)KEY MATRIXSELECTOR ANALOGSW CONTROL IC(NJU7

42、313AM)E2PROM IC(X24C04)MULTI CONTROLENCODER(R-SE9 only)(X14) S1ENC-AENC-B2VOLUME ROTARYENCODER(X14) IC4SIGNAL LEVELRDS CLOCKRDS DATA3RDS(X09) IC32ELECTRIC VOLUMEIC (M62420)SDSTEREOHEAD PHONESPROTECTIONA MUTET MUTEH. P. MUTEATTA CLASS ONSERIALR-SE7/SE-7(G)6CIRCUIT DESCRIPTION5. Microprocessor : uPD78

43、045FGF057 (X14 : IC1)5-1 Microprocessor periphery block diagramKey matrix60 KR059 KR158 KR264 KS0DSW0DSW1 (D158)DSW2 (D159)63 KS1POWERAUTO / MONOBAND62 KS2N. B. CIRCUIT(R-SE7) INPUT SEL.(R-SE9) MODE(R-SE7) TUNING UP(R-SE9) No. use61 KS3pure AENTER(R-SE7) TUNING DOWN(R-SE9) No useNo. of : u-COM port

44、No.R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW11R-SE7/SE-7(G)7CIRCUIT DESCRIPTIONH E/T type only, other types unused.The RDS PTY AF search always corresponds to a span search of 100kHz. Therefore, a span search of 50 KHzcannot be performed.Pin No. Name I/O Description Active17 7G1G O FL grid 71 8 VD

45、D Micro processor power supply (+5V) 9 E2PROM SCL O E2PROM control clock 10 E2PROM SDA I/O E2PROM control data 11 ENC C Multi control encoder input A 12 ENC D Multi control encoder input B 13 A CLASS ON O Power ON/OFF control signal H : OFF L : ON14 SEL STB O Selector IC strobe 15 SEL/PLL CLK O SEL/

46、PLL IC control clock 16 SEL/PLL DATA O SEL/PLL IC control data 17 RESET I Microprocessor reset L : RESET ON18 CE I AC OFF(MAIN POWER) detection Signal L : AC OFF19 PLL DO O IF count data 20 AVSS A/D power SUPPLY (GND) 21 PLL CE O PLL chip enable control L : CE22 T MUTE O Tuner mute signal L : MUTE O

47、N23 STEREO I Stereo signal detection L : STEREO ON24 SD I Synchronized signal detection 25 VOL SCL O Electric volume IC control clock 26 VOL SDA O Electric volume IC control data 27 LEVEL IN I Volume level input H 28 S.LEVEL(RDS) I Signal level 29 A VDD A/D power supply (+5V) 30 A VREF A/D reference

48、 voltage(+5V) 31, 32 OSC 32kHz oscillator 33 Vss Microprocessor power supply (GND) 34, 35 OSC 4.19MHz oscillator 36 S.DATA I/O 16bit system data 37 S.BUSY I/O 16 bit system busy H : BUSY L : READY38 H.P. MUTE O Head phones mute signal L : ON39 ATT O CLASS A control signal H : A CLASS L : AB CLASS40 A MUTE O Audio mute signal L : ON41 HIGH RELAY O AMP h