Kenwood-SE7-rec-sm 电路图 维修手册.pdf

STEREO INTEGRATED AMPLIFIER/TUNER R-SE7/SE-7(G) SERVICE MANUAL 1997-10/B51-5373-00 (K/K) 3191 stereo integrated amplifier/tuner on/standby phones downup volume control pure input selector N.B.pure enter band auto/mono turning SPEAKER (6 16 ) RL SUB WOOFER PRE OUT FM75 FM300GND AM ANTENA SYSTEM CONTROL R L ININ CDAUX REC OUTPLAY OUTREC OUTPLAY OUT TAPEMD Panel * (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) 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 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 2 RadioFans.CN 收音机爱 好者资料库 FM indoor antenna (1) (T90-0182-15) : KM (T90-0806-05) : ET DISPLAY SLEEPTAPE REMOTE CONTROL UNIT RC-SE9 123RANDOM 456CLEAR 789P.MODE O.T.E.0+10EDIT TUNER BAND INPUTN.B.MUTE VOLUME CONTROL MD CDP.CALL Batteries (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) (A70-1154-05) : KM (A70-1155-05) : TE R-SE7/SE-7(G) CONTENTS / ACCESSORIES 2 CONTENTS / ACCESSORIES . 2 CIRCUIT DESCRIPTION.3 ADJUSTMENT.8 PC BOARD . 10 SCHEMATIC DIAGRAM . 13 EXPLODED VIEW .24 PARTS LIST.25 SPECIFICATIONS .Back cover Contents Accessories System configuration SYSTEM NAMEAMP/TUNERCD PLAYERSPEAKER HM-701R-SE7DP-SE7LS-SE7 R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 3 RadioFans.CN 收音机爱 好者资料库 R-SE7/SE-7(G) 3 CIRCUIT DESCRIPTION ChannelBANDE TYPEChannelBANDE TYPE 01chFM87.50MHz11chFM90.00MHz 02chFM97.50MHz12chFM98.00MHz 03chFM108.00MHZ13chFM98.50MHz 04chAM630kHz14chFM106.00MHz 05chAM990kHz15chAM531kHz 06chAM1440kHz16chAM990kHz 07chFM87.50MHz17chAM1602kHz 08chFM87.50MHz18chFM87.50MHz 09chFM87.50MHz19chFM87.50MHz 10chFM89.10MHz20chFM87.50MHz 1. INITIAL STATE (1) AMP-related block EPOWEROFF ESELECTOR SOURCETUNER EDISPLAYSELECTOR EN.B. CIRCUITOFF EA CLASS VOLUME VALUE1.40 STEP EAB CLASS VOLUME VALUE 7 STEP EPURE MODENORMAL (AB CLASS) EAUTO POWER SAVEOFF EMULTI CONTROL MODEINPUT SEL.(R-SE9 only) (2) TUNER-related block EBANDFM EFREQUENCYLower-limit value of receiving frequency. FM87.5 MHz AM531 kHz EAUTO/MANUALAUTO EP.CH MEMORYLast frequency ELast P.CH01ch ERDS DATA TABLE MEMORYNO DATA (3) TIMER-rated block ECLOCKSTOP (AM12:00) EPROGRAMWORKING MODE OFF CONTENTS OF PROGR.ON=AM 12:00 OFF=AM 12:00 PLAY MODE=PLAY SELECTOR=TUNER(1ch) REC MODE OFF EO.T.TWORKING MODE OFF OTT ON TIMEAM 7:00 (4) TEST PRESET FREQUENCY 2. BACKUP This function holds the current state of the unit even if the AC power of the receiver is turned OFF. (1) Operation outline The backup state set command signal (CE) of a microcom- puter is set low when the AC power is turned OFF. The microcomputer detects the signal and enters the stop state. The microcomputer is reset when the AC power is turned ON. The data for backup state confirmation is checked by reset processing. The microcomputer is initialized when the data was destroyed. If it is not destroyed, the microcomputer is started in the backup state. EThe data for backup state confirmation is written in a RAM area. E The microcomputer is set to the STOP mode so as to save the power consumption. EA backup state set command signal is detected by a timer interrupt of 1 msec. EThe backup guarantee period is set in a circuit. (2) Backup state setting EThe data (A596, 5A69H) for backup state confirmation is written in a RAM area. (3) Contents of backup data to be held AMP EPOWER ON/OFF EDISPLAY MODE ESELECTOR SOURCE EN.B. CIRCUIT MODE EA CLASS VOLUME VALUE EAB CLASS VOLUME VALUE EPURE A MODE TUNER ELAST BAND EPRESET CHANNEL/RECEIVING STATION FRE- QUENCY/PI/TA/PTY/PS E LAST RECEIVING STATION FREQUENCY AND PRE- SET CHANNEL (AM/FM) EPRESET MEMORY data (1ch40ch) EAUTO/MANUAL CLOCK/TIMER ELAST CLOCK DATA E PROGRAMMED CONTENTS/PROGRAM TIMER WOR- KING MODE ON/OFF EO.T.T. SETTING TIME/O.T.T. WORKING MODE ON/OFF The initial setting is performed in a following event : 1. When backup memory data is destroyed when reset is applied to the microprocessor. 2. When the power cord is plugged in to the AC wall outlet while pressing the on/standby key. R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 6 RadioFans.CN 收音机爱 好者资料库 R-SE7/SE-7(G) 4 CIRCUIT DESCRIPTION 3. DESTINATION LIST OF TUNER 3-1 Destination List of Tuner 4. TEST MODE 4-1. Initializing The system is initialized when the power is turned on while pressing the on/standby key. (1) Contents of operation EAll the functions are initialized. 4-2. AMP test mode using main units keys 4-2-1. Entering the AMP test mode ETurn on the power while pressing the BAND key. 4-2-2. Canceling the AMP test mode EBy turning off the power, the system is initialized and the test mode is canceled. 4-2-3. Contents of AMP test mode (1) Automatic on/standby ON EThe POWER ON state is entered whenever the power is turned on while pressing the BAND key. All functions are then initialized and activated in the all-lighting mode. ESub-clock oscillation diagnosis function The oscillation diagnosis (existence of oscillation and measurement of period) of a sub-clock is performed before the test mode is entered. If the diagnosis result is OK, 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 system enters the test mode. If the diagnosis result is continu- ously NG five times, the system stops with ERR 1 and ERR 2 displayed. (2) All-lighting mode EAll the fluorescent display indicators and LED lamps light when the power is turned on while pressing the BAND key. E After that, the all-lighting mode is canceled when any main units key is pressed. The normal display obtained when the selector is set to TUNER then appears. (3) Others EThe AMP test mode is not terminated even if the selector is set to positions other than TUNER. EIn the AMP test mode, the muting during mode selection is not controlled. However, the operation during the power-on sequence is the same as the normal 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 keys below provide a special operation according to the posi- tion where the selector is set. The main units keys except described below and the rotary encoder provide the normal operation. (4) When selector is set to TUNER KeyOperation PURE A keyIncrements the P.CALL every time this key 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 the written data. If the read data is the same as the written data, RAM OK is displayed in the fluorescent display indicator. If the former is different from the latter, RAM NG is displayed. A Set the TUNER ATT to OFF and display the S level in hexadecimal when the ENTER key is pressed. (ATT OFF * is displayed in the fluorescent display indicator.) B Set the TUNER ATT to ON and display the S level in hexadecimal when the ENTER key is pressed. (ATT ON * is displayed in the fluorescent display indicator.) * The special display using the ENTER key is continued until the next operation is carried out. (*: S LEVEL) When keys other than ENTER are pressed in items to B above, the TUNER ATT is set to OFF and the normal display appears. The operation corresponding to the key that has been pressed is performed in this case. (5) When selector is set to positions other than TUNER Desti- Receive Channel PLL DIODE SW nation BAND frequency space 1Freference DSW1 DSW2 rangefrequency D518D519 FM 87.5MHz 100kHz +10.7MHz25kHz K1 108.0MHz AM 530kHz 10kHz+450kHz10kHz 11 1700kHz FM 87.5MHz 50kHz+10.7MHz25kHz E1 108.0MHz AM 531kHz 9kHz+450kHz9kHz 01 1602kHz FM 87.5MHz 50kHz+10.7MHz25kHz E3 108.0MHz (RDS) AM 531kHz 9kHz+450kHz9kHz 10 1602kHz M K2 or E1 is changed the setting DSW1. X1 (DSW1=1 : K2, 0 = E1) 0 : NO DIODE1 : DIODEX : SWITCHING TRANSISTOR ENTER key Every time this key is pressed, master VOL- UME level is selected cyclically. INITIALIZE level MAX MID MIN Value of Master VOLUME Press the ENTER key. Press the PURE A key, then press the ENTER key. MAX8616.00 MID408.00 MIN10.20 INITIALIZE71.40 R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 7 R-SE7/SE-7(G) 5 CIRCUIT DESCRIPTION AUTO key Selects the MUTE operation and equalizer cyclically in the order below for operation display every time this key is pressed. - - MUTE operation - Minimum - Maximum - Pre-condition- In the operation for except the AUTO key, become pre- condition equlizer . Pre condition : The equlizer becomes the condition to be pushed the AUTO key before (include N.B. circuit). (6) SERIAL TEST CODE LIST Refer to Service manual (B51-5210-00) of R-SA7 on page 7. BAND key Every time this key is pressed, all the displays go off and the normal display is selected cyclically. 4-3. RDS test mode using main units keys 4-3-1. Entering the RDS test mode ETurn on the power while pressing the TUNING UP key. 4-3-2. Canceling the RDS test mode EBy turning off the power, the system is initialized and the test mode is canceled. 4-3-3. Contents of RDS test mode EThe POWER ON state is entered whenever the power is turned on while pressing the TUNING UP key. All the functions are then initialized. E In the RDS test mode using main units keys, the keys below provides a special operation according to the posi- tion where the selector is set. The main units keys except described below and the rotary encoder provide the normal operation. KeyOperation CLASS 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 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 the written data. If the read data is the same as the written data, RAM OK is displayed in the fluorescent display indicator. If the former is different from the latter, RAM NG is displayed. A Set the TUNER ATT to OFF and display the S level in hexadecimal when the ENTER key is pressed. (ATT OFF * is displayed in the fluorescent display indicator.) B Set the TUNER ATT to ON and display the S level in hexadecimal when the ENTER key is pressed. (ATT ON * is displayed in the fluorescent display indicator.) * The special display using the ENTER key is continued until the next operation is carried out. (*: S LEVEL) When keys other than ENTER are pressed in items to B above, the TUNER ATT is set to OFF and the normal display appears. The operation corresponding to the key that has been 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 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 mode EThe serial test mode is canceled to return to the ordinary mode by inputting a TEST OFF code (C27 EH). After the ordinary mode was returned, the serial mode is returned 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 power is turned OFF. (3) Cautions EThe 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 guaranteed when they are performed in the serial test mode. E An identical code is output when the serial test mode code is input. R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 10 FL DISPLAY (FIP9GM6R) RESET CE REMOCON LEVEL IN CLASS A LED BIAS MID BIAS HI LOW RELAY HI RELAY SPEAKER RELAY (X09) J5 (X14) IC2 (X14) S2 DATA BUSY ENC-C ENC-D (X14) ED1 (X05) IC2 (X09) IC1 (X14) IC3 u-COM uPD78045FGF057 9 16 4 1 3 3 1 3 2 2 PLL IC (LC72131) KEY MATRIX SELECTOR ANALOG SW CONTROL IC (NJU7313AM) E2PROM IC (X24C04) MULTI CONTROL ENCODER (R-SE9 only) (X14) S1 ENC-A ENC-B 2 VOLUME ROTARY ENCODER (X14) IC4 SIGNAL LEVEL RDS CLOCK RDS DATA 3 RDS (X09) IC3 2ELECTRIC VOLUME IC (M62420) SD STEREO HEAD PHONES PROTECTION A MUTE T MUTE H. P. MUTE ATT A CLASS ON 8 SERIAL R-SE7/SE-7(G) 6 CIRCUIT DESCRIPTION 5. Microprocessor : uPD78045FGF057 (X14 : IC1) 5-1 Microprocessor periphery block diagram Key matrix 60 KR059 KR158 KR2 64 KS0DSW0DSW1 (D158)DSW2 (D159) 63 KS1POWERAUTO / MONOBAND 62 KS2N. B. CIRCUIT (R-SE7) INPUT SEL. (R-SE9) MODE (R-SE7) TUNING UP (R-SE9) No. use 61 KS3pure AENTER (R-SE7) TUNING DOWN (R-SE9) No use No. of : u-COM port No. R-SE7/SE-7(G)(K) COVER( 97.11.28 0:22 AM yW 11 R-SE7/SE-7(G) 7 CIRCUIT 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 KHz cannot be performed. Pin No. Name I/O Description Active 17 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 : ON 14 SEL STB O Selector 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 ON 18 CE I AC OFF(MAIN POWER) detection Signal L : AC OFF 19 PLL DO O IF count data 20 AVSS A/D power SUPPLY (GND) 21 PLL CE O PLL chip enable control L : CE 22 T MUTE O Tuner mute signal L : MUTE ON 23 STEREO I Stereo signal detection L : STEREO ON 24 SD I Synchronized signal detection 25 VOL SCL O Electric volume IC control clock 26 VOL SDA O Electric volume IC contr