Kenwood-SE7G-rec-sm 维修电路原理图.pdf

《Kenwood-SE7G-rec-sm 维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Kenwood-SE7G-rec-sm 维修电路原理图.pdf（27页珍藏版）》请在收音机爱好者资料库上搜索。

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 yW 2RadioFans.CN 收音机爱 好者资料库FM indoor antenna (1)(T90-0182-15) : KM(T90-0806-05) : ETDISPLAYSLEEPTAPEREMOTE CON

5、TROL UNITRC-SE9123RANDOM456CLEAR789P.MODEO.T.E.0+10EDITTUNERBANDINPUTN.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 uni

6、t (1)(A70-1154-05) : 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 PLAYERSPEA

7、KERHM-701R-SE7DP-SE7LS-SE7R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 3RadioFans.CN 收音机爱 好者资料库R-SE7/SE-7(G)3CIRCUIT DESCRIPTIONChannelBANDE TYPEChannelBANDE TYPE01chFM87.50MHz11chFM90.00MHz02chFM97.50MHz12chFM98.00MHz03chFM108.00MHZ13chFM98.50MHz04chAM630kHz14chFM106.00MHz05chAM990kHz15chAM531kHz06c

8、hAM1440kHz16chAM990kHz07chFM87.50MHz17chAM1602kHz08chFM87.50MHz18chFM87.50MHz09chFM87.50MHz19chFM87.50MHz10chFM89.10MHz20chFM87.50MHz1. INITIAL STATE(1) AMP-related blockEPOWEROFFESELECTOR SOURCETUNEREDISPLAYSELECTOREN.B. CIRCUITOFFEA CLASS VOLUME VALUE1.40 STEPEAB CLASS VOLUME VALUE 7 STEPEPURE MOD

9、ENORMAL (AB CLASS)EAUTO POWER SAVEOFFEMULTI 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

10、:00)EPROGRAMWORKING MODE OFFCONTENTS OF PROGR.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) Operatio

11、n outlineThe backup state set command signal (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 processi

12、ng.The microcomputer is initialized when the 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.E The microcomputer is set to the STOP mode so as tosave the power consumption.EA backup state set c

13、ommand signal is detected by a timerinterrupt 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. CIR

14、CUIT MODEEA CLASS VOLUME VALUEEAB CLASS VOLUME VALUEEPURE A MODETUNER ELAST BANDEPRESET CHANNEL/RECEIVING STATION FRE-QUENCY/PI/TA/PTY/PSE LAST RECEIVING STATION FREQUENCY AND PRE-SET CHANNEL (AM/FM) EPRESET MEMORY data (1ch40ch)EAUTO/MANUALCLOCK/TIMER ELAST CLOCK DATAE PROGRAMMED CONTENTS/PROGRAM T

15、IMER WOR-KING MODE ON/OFFEO.T.T. SETTING TIME/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 k

16、ey.R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 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 ar

17、e initialized.4-2. AMP test mode using main units 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/s

18、tandby ONEThe POWER ON state is entered whenever 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

19、-clock is performedbefore the test mode is entered. 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

20、times, the system stops with ERR 1 andERR 2 displayed.(2) All-lighting modeEAll the fluorescent display indicators and LED lamps lightwhen the power is turned on while pressing the BANDkey.E After that, the all-lighting mode is canceled when anymain units key is pressed. The normal display obtainedw

21、hen the selector is set to TUNER then appears.(3) 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

22、 operation.EThe SP protection operation is also the same as the nor-mal operation.E In 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

23、normal operation.(4) When selector is set to TUNERKeyOperationPURE 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

24、 area of E2PROM, then read thewritten data. If the 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.A Set the TUNER ATT to OFF and display the S level inhexadecimal when the ENTER key is

25、pressed. (ATTOFF * is displayed in the fluorescent display indicator.)B Set 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 operat

26、ion is carried out. (*: S LEVEL)When keys other 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-Rece

27、iveChannelPLLDIODE SWnationBAND frequencyspace1Freference DSW1 DSW2rangefrequencyD518D519FM87.5MHz100kHz +10.7MHz25kHzK1108.0MHzAM530kHz10kHz+450kHz10kHz111700kHzFM87.5MHz50kHz+10.7MHz25kHzE1108.0MHzAM531kHz9kHz+450kHz9kHz011602kHzFM87.5MHz50kHz+10.7MHz25kHzE3108.0MHz(RDS)AM531kHz9kHz+450kHz9kHz1016

28、02kHzMK2 or E1 is changed the setting DSW1.X1(DSW1=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

29、the ENTER key.MAX8616.00MID408.00MIN10.20INITIALIZE71.40R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 7R-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 - Max

30、imum - Pre-condition- In the operation for except 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 tim

31、e this key is pressed, all the displaysgo off and 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 initiali

32、zed and thetest mode is canceled.4-3-3. Contents 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.E In the RDS test mode using main units keys, the keysbelow provides a special operation according to

33、 the posi-tion where the selector is set. The main 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

34、remote control key PTY every time this key is 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 thewritte

35、n data. If the 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.A Set the TUNER ATT to OFF and display the S level inhexadecimal when the ENTER key is pressed. (ATTOFF * is displayed in t

36、he fluorescent display indicator.)B Set 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

37、 keys other 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.4-4. SERIAL TEST MODE(1) Setting the serial test mode The unit is put into the serial test mode when

38、 a serial codeTEST ON is input during 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 m

39、odeEThe serial test mode is canceled 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 t

40、he AC poweris turned OFF.(3) CautionsEThe 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.E An identical code is output when the serial

41、 test modecode is input.R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 10FL 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 MAT

42、RIXSELECTOR ANALOGSW CONTROL IC(NJU7313AM)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 ON8SERIALR-SE7/SE-7(G)6CIRCUIT

43、 DESCRIPTION5. Microprocessor : uPD78045FGF057 (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 D

44、OWN(R-SE9) No useNo. of : u-COM port No.R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 11R-SE7/SE-7(G)7CIRCUIT DESCRIPTION# 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 Descr

45、iption Active17 7G1G O FL grid 71 8 VDD 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 Se

46、lector IC strobe 15 SEL/PLL CLK O SEL/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

47、 T MUTE O Tuner mute signal L : MUTE ON23 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 # 28 S.LEVEL(RDS) I Signal level 29 A VDD A/D powe

48、r supply (+5V) 30 A VREF A/D reference 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 cont

49、rol signal H : A CLASS L : AB CLASS40 A MUTE O Audio mute signal L : ON41 HIGH RELAY O AMP high relay control H : ON L : OFF42 LOW RELAY O AMP low relay control H : ON L : OFF43 SP RELAY O Speaker relay control H : ON L : OFF# 44 CLK(RDS) I RDS clock # 45 DATA(RDS) I RDS data 46 PROTECTION I Protect

50、ion detection H : ON L : OFF47 REMOCON I Remote control input 48 IC 49 CLASS A LED O CLASS A LED H : OFF L : ON50 BIAS MID O Bias control signal MID 51 BIAS HI O Bias control signal HI 52 VDD Microprocessor power supply (+5V) 53 ENCA I Volume encoder in put A 54 ENC B I Volume encoder input B 55 HEA