Kenwood-KDC-138-Service-Manual 电路图 维修手册.pdf

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1、This product uses Lead Free solder. This product complies with the RoHS directive for the European market. 2007-9 PRINTED IN JA PAN B53-0577-00 (N) 373SERVICE MANUAL KDC-138/138CR KDC-139/139S CD RECEIVER * Depends on the model. Refer to the parts list. Panel assy KDC-138 (A64-4276-02) Panel assy KD

2、C-138CR (A64-4277-02) TDF SPARE-PANEL MAIN UNIT NAMETDF PARTS No.TDF NAME KDC-138Y33-2830-63TDF-81D KDC-138CRY33-2830-64TDF-81DCR KDC-139Y33-2820-65TDF-139 Panel assy KDC-139 (A64-4286-02) KDC-139S (A64-4287-02) * Carrying case (W01-1692-05) Mounting hardware assy (J21-9716-03) Lever (D10-4589-04) x

3、2 DC cord (E30-6415-15) Screw set (N99-1757-05) * Escutcheon (B07-xxxx-xx) * Plastic cabinet assy (A02-2736-03) Screw (4x16) (N84-4016-48) KDC-138KDC-138CR KDC-139 KDC-139SY33-2820-66TDF-139S RadioFans.CN 收音机爱 好者资料库 2 KDC-138/138CR/139/139S BLOCK DIAGRAM ELECTRIC UNIT (X34- ) SWITCH UNIT (X16- ) E-V

4、OL IC2 or IC3 A8V SYSTEM u-COM BU POWER DC-DET Q701,702 PRE-OUT PHONE ACC-DET Q101 SURGE- Q103 BU-DET Q102 Q2 DC-CN A8V SERVO+B D5 BU5 SW5 DET DC-CN etc PAN5V RESET IC IC8 ILLUMI+B CN RESET ENCODER ROTARY REMOTE ILLUMI KEY MATRIX KEY LED IC1 SW5 IC6 IC2 J1 AM+B S1 ED1 J5 MUTE Q705 J2 A1 SERVO+B A8V

5、BU5 Q301 BU5 BU5 Q901-903 DME1 BU5 SW5 CD SERVO IC to GND S2 J1 SW5 AM+B A8V TUNER FRONT-END ANT. E2PROMSW5 BU MECHA CD PRE-OUT MUTE BU5 SW5 F-AUX J2 PANEL DET IC1 DRIVER BU5 SW5 FL+B IC4 POWER SUPPLY IC J3 BU5 LCD IC10 2 16 1 BU DET PHONE ACC DET RST PHONE ACC DET / BU DET PS1-1 / PS1-2 / PS1-3 P.O

6、N FL PS2-1 / PS2-2 9 5 10 BU DET 11 2 MUTE 12 3 3 ROM CORRECTION (NOT USED) 1 REAR/SW 111 P-ANT P-CON B.U. ACC PHONE SP-OUT PS2 1 / PS2 2 PS1 1 / PS1 2 / PS1 3 R103 1 DPU1 CD PLAYER UNIT (X32-598x-xx) BOARD (X34- ) MOTHER EF A C B TR COIL FO COIL APC IC1 16.93MHz CLOCK IC6 8V SW3.3V REG IC3 LOADING

7、& RF AMP SERVO PROCESSOR MOTOR DRIVER MOTOR SPINDLE 3.3V REG IC2 S2 S4 S1 S3 + + ONLY SLED MOTOR DM1 DM2 Q1 X2 Q7 PROCESSOR MICRO 1 CHIP IC LEVEL SHIFT LEVEL SHIFT LEVEL SHIFT Q3 Q3 Q4 (0-00),(0-01) ONLY SW Q2 SW Q8,9 3.3V SW Q6 SW (0-01),(0-03) ONLY (0-00),(0-01) X1 or VREF D.GND BU5V 8EJE-SW 12EJE

8、-SW LOS-SW LOE/LIM-SW D.GND MOTOR LO/EJ S.GND D.GND D.GND S.GND A.GND AS8V R-ch L-ch S.GND DMUTE A,B,C,E,F VREF TR OUT FO OUT DM OUT FM OUT TVD,SPL FOD,TRD, DATA CLK MSTOP RST MUTE MUTE CLK DATA MSTOP MRST D.GND S7V AVDD REGVDD P-ON1 IOVDD RadioFans.CN 收音机爱 好者资料库 3 KDC-138/138CR/139/139S COMPONENTS

9、DESCRIPTION ELECTRIC UNIT (X34-564x-xx) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1System -COMControls FM/AM tuner, the changer, CD mechanism, panel, volume and tone. IC2,3E-VOLControls the source, volume and tone. IC4Power Supply ICOutputs 5Vx2, 8.1Vx2, 10.2V, P-CON and

10、P-ANT. IC6Power IC Amplifi es the front L/R and the rear L/R to 50W or 45W maximum. IC8Reset ICLo when detection voltage goes below 3.6V. Q2Servo+B AVRWhen Q3s base goes Hi, Servo+B AVR outputs 7.5V. Q3Control SW for Servo+BON when the base goes Hi. Q1114V SWON when the base goes Hi. Q1214V SWON whe

11、n the base goes Lo. Q13Control SW for IC4ON when the base goes Hi. Q14Control SW for IC4ON when the base goes Lo. Q101ACC DETON when the base goes Hi during ACC is applied. Q102Serge DETWhen the base goes Hi, surge voltage is detected. Q103BU DETON when the base goes Hi during BU is applied. Q104,10

12、5Mute ControlON when the base goes Hi. Q301Panel 5V SWON when the base goes Lo. Q402Quick Charge Voltage SWCharges voltage quickly when the base goes Hi. Q701,702Pre-out Mute SWWhen a base of the 4 transistors goes Hi, pre-out is muted. Q705Mute Driver for Pre-outON when the base goes Lo. Q801Electr

13、ic Discharge Circuit for C805 (SVR)ON when the base goes Lo. Q901DC Offset DETON when the base goes Hi after Q902s and Q903s outputs are separated. Q902,903DC Offset DET SWON when the bases go Lo after IC6s SP-OUTs (DC) are separated. SWITCH UNIT (X16-616x-xx) Ref. No.Application / FunctionOperation

14、 / Condition / Compatibility IC1LCD Driver IC2Remote Control Sensor CD PLAYER UNIT (X32-5980-04) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1 CD Signal Processor & MECHA -COM RF Amplifi er responding to CD-RW Focusing, tracking, sled and spindle servo processing. Automatic

15、 adjustment (focusing, tracking, gain, offset and balance) operations. Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio data interpolation processing) operations, and microcomputer function. Generation of RF signal based on the signals from the APC circuit and the laser p

16、ick-up, and generation of servo error (focusing error and tracking error) signals. Detection of dropout, anti-shock, track crossing and off-tracking conditions, included gain control function during CD-RW. IC23.3V REGSupplies 3.3V to IC1 and the laser pick-up. IC64ch BTL DriverFocusing and tracking

17、coil, sled and spindle motor driver, disc loading and eject operation. RadioFans.CN 收音机爱 好者资料库 4 KDC-138/138CR/139/139S Ref. No.Application / FunctionOperation / Condition / Compatibility Q35V-3.3V Level ShiftShifts 5V to 3.3V, or 3.3V to 5V. Q45V-3.3V Level ShiftShifts 3.3V to 5V. Q6BU3.3V SWQ6 is

18、ON when Q8 or Q9 is ON. Q7APC (Auto Power Control)Drives LD (Laser Diode). Q8Power Supply ControlPower Supply Control from MECHA -COM. Q6 is ON when pin 63 (P_ON1) of IC1 is Hi. Q9Power Supply ControlPower Supply Control from system -COM. Q6 is ON when pin 125 (MSTOP) of IC1 is Hi. D1,25V Force Volt

19、age Prevention5V Force Voltage Prevention from MECHA -COM side. D3Laser Diode ProtectionPrevents reverse bias which is applied to laser. Laser destruction prevention. D4Static Electricity CountermeasurePrevents malfunction by static electricity. COMPONENTS DESCRIPTION 5 KDC-138/138CR/139/139S MICROC

20、OMPUTERS TERMINAL DESCRIPTION SYSTEM -COM: IC1 on X34- (ELECTRIC UNIT) Pin No.Pin NameI/OApplication Truth Value Table Processing Operation Description 1LX DATA MI/OData to slave unitPull-down (GND) 2LX CLKI/OLX-BUS clock125k65kHz 35NC-Not used Output L fi xed 6REMOIRemote control signal inputDetect

21、s pulse width 7NC-Not used Output L fi xed 8BYTE-Memory extended bus width settingConnects to VSS 9CNVSS -Connects to VSS 10XCIN -32.768kHz 11XCOUT -32.768kHz 12RESET -L: Reset 13XOUT -10.0MHz 14VSS - 15XIN -10.0MHz 16VCC1 - 17NMIIConnects to VCC 18PANEL DETIPanel communication detectionH: Panel det

22、ached, L: Panel attached 19,20NC-Not used Output L fi xed 21ROMCOR DETIE2PROM writing requestH: Writing 22,23NC-Not used Output L fi xed 24PON FL-Not used Output L fi xed 25NC-Not used Output L fi xed 26PON PANELI/OPanel 5V control ON: L, Momentary power down/Panel detached: Hi-Z, 11 minutes after A

23、CC OFF: Hi-Z 27,28NC-Not used Output L fi xed 29AUD SCLI/OE-VOL clock output 30AUD SDAI/OE-VOL data input/output 31VFD SYS DATAOLCD data output 32VFD PAN DATAILCD data input 33VFD CLKOLCD clock output125kHz 34VFD BLK-Not used Output L fi xed 35CD DATAI/OCD mechanism I2C data input/output 36CD CLKI/O

24、CD mechanism I2C clock output 37NC-Not used Output L fi xed 38CD LOS SWICD loading detection 39PIO0ICommunication request from mechanism DSPH: Data request 40CD MSTOPOCD mechanism -com stop H: Mechanism -com operates, L: Mechanism -com stops 41EPMIFlash EPM inputConnects to VSS 42CD LOE LIM SWICD de

25、tection (Chucking SW)H: Loading completed, L: No disc 43PON CD-Not used 6 KDC-138/138CR/139/139S Pin No.Pin NameI/OApplication Truth Value Table Processing Operation Description 44CD LOEJI/OCD motor controlqRefer to the truth value table 45CD MOTORI/OCD motor controlqRefer to the truth value table 4

26、6VFD CEOLCD control request 47CD DRIVEMUTEOMotor driver mute output 48CD CCEOCD mechanism chip enable 49NCINot used 50CD MRSTOCD mechanism -com resetH: Normal, L: Reset 5153NC-Not used Output L fi xed 54CD MUTEICD mute requestL: Mute request 55CD DISC12 SWI12cm disc detectionPull-up (B.U.) 56ROTARY

27、CCWIVOL key inputDetects pulse width 57ROTARY CWIVOL key inputDetects pulse width 5861NC-Not used Output L fi xed 62VCC2- 63NC-Not used Output L fi xed 64VSS- 65NC-Not used 66TUN IFC OUTIFront-end IFC-OUT inputH: Station found, L: No station 67PON EXT GNDI/OIC2 external input quick charge control L:

28、 OFF, Hi-Z: Quick charge, When IC2 is in source select: Hi-Z, Mute L: L, Momentary power down/Power OFF: L 68MUTEI/OMuteL: Mute OFF, Hi-Z: Mute ON 69ANALOG CONOAUX/LX audio switching AUX: H (Switches after 100ms after fi rst-out mute begins to work), LX/Other source: L 70LX RSTOForced reset to slave

29、 unitH: Reset, L: Normal 71LX CONOStart-up request to slave unitH: Slave unit ON, L: Slave unit OFF 72LX MUTEIMute request from slave unitH: Mute ON, L: Mute OFF 73LX REQ MOCommunication request to slave unit 74NC-Not used 75LX REQ SICommunication request from slave unitPull-down (GND) 76PWIC SVROSV

30、R discharging circuit During 500ms after power OFF and momentary power down: H, Since then: L 77PWIC STBYOPower IC standby controlPower ON: H, Power OFF: L 78PWIC MUTEOPower IC mute STANDBY source/Momentary power down: L, TEL mute: L 79ACC DETIACC power supply detectionACC found: L, No ACC: H 80BU D

31、ETIDetection of momentary power down BU found: L, No BU/Momentary power down: H (Operates after less than 4ms after momentary power down is detected) 8183NC-Not used Output L fi xed 84TUN SMETERIS-meter input 85TYPE1IDestination switchingeRefer to the truth value table MICROCOMPUTERS TERMINAL DESCRI

32、PTION 7 KDC-138/138CR/139/139S Pin No.Pin NameI/OApplication Truth Value Table Processing Operation Description 86TYPE2IDestination switchingeRefer to the truth value table 87PWIC DC DETIDC offset detection If DC offset is found 20 times in 100ms with condition of over 1.0V, it will be judged as DC

33、offset detected. 88LINE MUTEILine mute detectionTEL mute: Below 1V, NAVI mue: Over 2.5V 89OFFSET DETIPower IC offset detection 90PS2 2OPower supply IC controlrRefer to the truth value table 91PS2 1OPower supply IC controlrRefer to the truth value table 92PS1 1OPower supply IC controlrRefer to the tr

34、uth value table 93PS1 2OPower supply IC controlrRefer to the truth value table 94PS1 3OPower supply IC controlrRefer to the truth value table 95NC-Not used Output L fi xed 96AVSS- 97REF CONOVREF controlConnects to VREF 98VREF- 99AVCC- 100LX DATA SIData from slave unitPull-down (GND) MICROCOMPUTERS T

35、ERMINAL DESCRIPTION Truth value table q CD motor control CD motorCD loading/eject StopLL LoadHL EjectHH BrakeHHi-z e Destination switching TYPE 2 (Pin 86) TYPE 1 (Pin 85) Model 0V0VKDC-135 0V2.4VKDC-135CR 1.2V0VKDC-136 r Power supply IC (IC4) control SEL1 (Pin 10) PS1-2PS1-3PS2-1ILLUMIP-CONP-ANT LLL

36、OFFOFFOFF LLHONOFFOFF HLHONONOFF HHHONONON SEL2 (Pin 11) PS1-1PS2-2AUDIO/SW5AM LLOFFOFF HLONOFF HHONON 8 KDC-138/138CR/139/139S Example KeyDescription of displayDescription 5 Disc EJECT times display EJCXXXXXDisc EJECT times display. MAX 65535 (times) 5 While disc EJECT times is displayed, press and

37、 hold for 2 seconds or longer to clear disc EJECT times. A symbol “” in the key column indicates that the key should be pressed and held for 1 second or longer. How to enter the test mode ProcedureNote Press and hold the 1 key and 3 key and reset. All lamps blink when it is detected that the sub-clo

38、ck resonator is disconnected. When having started up in the test mode, change the LINE MUTE inhibition time from 10 seconds to 1 second. When operating in the test mode, even if a DC offset error occurs, detection information is not written in the E2PROM. Forced disc ejection is prohibited in the te

39、st mode. How to clear the test mode ProcedureNote Reset, momentary power down, ACC OFF, Power OFF, Panel detached.Clearing the test mode Test mode default condition DescriptionDefault values SourceSTANDBY DisplayDisplay lights are all turned on. Volume-10dB (“30” is displayed.) Bass BoostOFF CRSCOFF

40、 regardless of having/not having the switching function. AUXON (Only model equipped with AUX) System QNATURAL (FLAT) PreoutRear TEST MODE 9 KDC-138/138CR/139/139S Special displays when all lights are on in STANDBY source KeyDescription of displayDescription CommonAll lights ON.All lights ON. 1 Desti

41、nation terminal condition indication TP11 “TYPE” indicates system -com (IC1) destination, and shows real-time condition of the destination terminal. Development ID condition indication 5 : 00701KDevelopment ID Version (system -com: IC1) 2Serial No. display 00000000Serial No. is displayed (8 digits)

42、3 Power ON time display Pon0HXX 0050 is displayed for “XX”. When less than 1 hour, displayed by displayed by increments of 10 minutes. PonXXXXX0000110922 is displayed for “XXXXX”. MAX 10922 (hours) 3 When Power ON time is displayed, press and hold for 2 seconds or longer to clear Power ON time. 4 Di

43、sc operation time display PLy0HXX 0050 is displayed for “XX”. When less than 1 hour, displayed by increments of 10 minutes. PLyXXXXX0000110922 is displayed for “XXXXX”. MAX 10922 (hours) 4 While the disc operation time is displayed, press and hold for 2 seconds or longer to clear the disc operation

44、time. (Cleared only for displayed media.) 5 Disc EJECT times display EJCXXXXXDisc EJECT times display. MAX 65535 (times) 5 While disc EJECT times is displayed, press and hold for 2 seconds or longer to clear disc EJECT times. 6 Panel open/close times display PCXXXXXPANEL open/close times display. MA

45、X 65535 (times) 6 Press the key for more than 2 seconds while the PANEL open/ close count is displayed and PANEL open/close count is cleared. FM ROM correction version display 0123The number is the ROM correction version number. ERWhen E2PROM is not installed. When not written in yet. ooooWhen data

46、not matched. (due to the difference in versions) AMROM data transfer Audio data initialization InITAUDIO setting value is re-set to the test mode default value. Forced Power OFF information display POFFNo forced power OFF POFFPnL Forced power OFF by communication error between system -com and panel.

47、 While the forced power OFF data is displayed, press and hold for 2 seconds to clear the data. CD information display mode ON/OFF For the display contents, refer to “CD information display mode” in the next section. While in CD information display mode, press and hold for 2 seconds or longer to clea

48、r all CD information. TEST MODE 10 KDC-138/138CR/139/139S CD information display mode KeyDescription of displayDescription FM (forward rotation) AM (reverse rotation) I2C com- munication status ICOKI2C communication OK ICERI2C communication NG / CD mecha- nism error log display 1 : XXMER Mechanism e

49、rror log 1 (Latest) XX: Error number. “ ” is displayed in case there is no error. 2 : XXMER Mechanism error log 2 (Latest) XX: Error number. “ ” is displayed in case there is no error. 3 : XXMER Mechanism error log 3 (Latest) XX: Error number. “ ” is displayed in case there is no error. / CD Load error information display 1 : XXLDER Load error switch 1 XX: Number of errors. “ ” is displayed in case there is no error. 2 : XXLDER Load error switch 2 XX: Number of errors. “ ” is displayed in case there is no error. / CD Ejection error informa