Kenwood-KD-CW-312-A-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. SERVICE MANUAL 2007-10 PRINTED IN JA PAN B53-0579-00 (N) 223 KDC-W241AY/W241GY KDC-W3041A/W3041AY KDC-W3041G/W3041GY KDC-W312A/W312AY KDC-W312G/W312GY/W312SAY CD RECEIVER TDF SPARE-PANEL MAIN U

2、NIT NAMETDF PARTS No.TDF NAME KDC-W241AYY33-2840-66TDF-W241A KDC-W241GYY33-2840-67TDF-W241G KDC-W3041AY33-2840-60TDF-W3041A KDC-W3041AYY33-2840-60TDF-W3041A KDC-W3041GY33-2840-61TDF-W3041G Panel assy KDC-W312A/AY (A64-4290-02) KDC-W312G/GY (A64-4290-02) KDC-W312SAY (A64-4293-02) KDC-W3041GYY33-2840-

3、61TDF-W3041G KDC-W312AY33-2840-62TDF-W312A Panel assy KDC-W241AY/W241GY (A64-4292-02) Panel assy KDC-W3041xx (A64-4289-02) KDC-W312AYY33-2840-62TDF-W312A KDC-W312GY33-2840-63TDF-W312G DC cord (E30-6427-05) Lever (D10-4589-04) x2 Escutcheon (B07-3122-01) Mounting hardware assy (J21-9716-03) Carrying

4、case (W01-1691-05) KDC-W3041 KDC-W312 KDC-W241 KDC-W312GYY33-2840-63TDF-W312G KDC-W312SAYY33-2840-68TDF-W312SA RadioFans.CN 收音机爱 好者资料库 2 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY BLOCK DIAGRAM 2 16 1 FRONT/ P.ON FL BU DET PHONE ACC DET RST PHONE ACC DET / BU

5、DET PS1-1 / PS1-2 / PS1-3 P.ON FL PS2-1 / PS2-2 9 5 9 BU DET 11 2 MUTE R11-15 12 3 3 3 1 ROM CORRECTION (NOT USED) 1 REAR/SW 111 R80,81 P-ANT P-CON B.U. ACC PHONE SP-OUT PS2 1 / PS2 2 PS1 1 / PS1 2 / PS1 3 R103 1 FL+B 5 E-VOL IC2 or IC3 A8V SYSTEM u-COM BU POWER DC-DET Q701,702 PRE-OUT PHONE ACC-DET

6、 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 VFD IC1 SW5 IC6 IC3 J1 +B ILLUMI ILLUMI+B AM+B S1 ED1 J5 MUTE Q705 J2 A1 SERVO+B A8V BU5 1/2W Rx5 Q301 BU5 BU5 Q901-903 DME1 BU5 SW5 CD SERVO I

7、C to GND S2 J1 SW5 AM+B A8V TUNER FRONT-END ANT. DECODER RDS IC7 SW5 E2PROMSW5 BU MECHA CD PRE-OUT MUTE BU5 SW5 F-AUX J2 PANEL DET Rx2 1/4W IC1 BU5 SW5 SW14V FL+B IC4 POWER SUPPLY IC FL+B J3 BU5 IC10 VFD DRIVER Q8,9 Q7 ELECTRIC UNIT (X34- ) SWITCH UNIT (X16- ) VREF 8EJE-SW 12EJE-SW LOS-SW LOE-SW MOT

8、OR LO/EJ A.GND A8V A,B,C,E,F TR OUT FO OUT DM OUT FM OUT A3.3V LD SIGNAL S.GND S7.5V FO OUT TR OUT DM OUT FM OUT DRV MUTE SO SRAMSTB SI BUCK CCE PIO0 R246,247 SRAMSTB BUCK CCE PIO0 SO SI MRSTMRST C88,R82 C87,R83 R-ch L-chL-ch R-ch ZDETMUTE L/R D.GND D GND BU1.5V SW1.5V SW3.3V AGND BU5V P.ON EF A C B

9、 TR COIL FO COIL APC IC4 16.934MHz CLOCK IC3 3.3V REG IC7 LOADING & MOTOR DRIVER MOTOR SPINDLE S2 S4 S1 S3 (0-01) SLED MOTOR DM1 DM2 X1 Q1 RF AMP SERVO MP3 DECODER WMA DECODER 1M bit SRAM PROCESSOR AAC DECODER + + + + + LEVEL SHIFT Q11 SHIFT LEVEL Q12 LEVEL SHIFT SHIFT LEVEL Q10 CR FILTER CR FILTER

10、REVERSAL CIRCUIT Q13 BU1.5V REG IC5 IC6 IC11 SW3.3V REG SW1.5V REG ONLY LOADING & DPU1 CD PLAYER UNIT (X32-597x-xx) BOARD MOTHER (X34- ) RadioFans.CN 收音机爱 好者资料库 3 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY COMPONENTS DESCRIPTION ELECTRIC UNIT (X34-565x-xx) Ref

11、. 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 P-ANT. IC6Power IC Amplifi es the front L/R

12、 and the rear L/R to 50W maximum. IC7RDS ICRDS decoder. 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. Q7VFD+B SWON when the base goes Hi. Q8VFD+B AVRWhen Q9s base goes Hi, Servo+B

13、AVR outputs 10.5V. Q9Control SW for VFD+BON when the base goes Hi. Q1114V SWON when the base goes Hi. Q1214V SWON 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

14、 BU is applied. Q104,105Mute 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 b

15、ase 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 (X16-617x-xx) Ref. No.Application / FunctionOperation / Condition / Compatibility IC1VFD Driver IC3Re

16、mote Control Sensor CD PLAYER UNIT (X32-5970-02) Ref. No.Application / FunctionOperation / Condition / Compatibility IC34ch BTL Driver Driver for focusing & tracking coil, driver for sled & spindle motor, and operation for disc loading & ejection. IC4Servo DSP with built-in Audio DACWith built-in MP

17、3/WMA/AAC decoder and 1M-bit-SRAM. IC5D1.5V REG.Power supply for digital 1.5V. IC6D3.3V REG.Power supply for digital 3.3V. IC11BU1.5V REG.Power supply for back-up 1.5V. Q1APC (Auto Power Control)Drives LD (Laser Diode). RadioFans.CN 收音机爱 好者资料库 4 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A

18、/W312AY/W312G/W312GY/W312SAY Ref. No.Application / FunctionOperation / Condition / Compatibility Q10125V3.3V Level ShiftConverts signal from 5V to 3.3V, or from 3.3V to 5V. Q13InverterInverts ZDET signal. D1Level Down Lowers signal level by about 1.2V so that Lo level signal that turns the regulator

19、 ON/OFF surely becomes Lo judgment level of the regulator SW. D2Laser Diode ProtectionPrevents reverse bias which is applied to laser. Laser destruction prevention. D3,4Static Electricity CountermeasurePrevents malfunction by static electricity. COMPONENTS DESCRIPTION 5 KDC-W241AY/W241GY/W3041A/W304

20、1AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY MICROCOMPUTERS 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

21、used Output L fi xed 6REMOIRemote control signal inputDetects 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

22、to VCC 18PANEL DETIPanel communication detectionH: Panel detached, 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 FLOKey illumination power supply controlON: H, OFF: L 25NC-Not used Output L fi xed 26PON PANELI/

23、OPanel 5V control ON: L, Momentary power down/Panel detached: Hi-Z, 11 minutes after ACC 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 DATAOVFD data output 32VFD PAN DATAIVFD data input 33VFD CLKOVFD clock output125kHz 34VFD B

24、LKOVFD data blanking output H: Reset cancelled, L: Reset, Momentary power down /Panel detached: L, 11 minutes after ACC OFF: L 35CD SIOCD mechanism serial output 36CD SOICD mechanism serial input 37BUCKOSerial clock output1MHz 38CD LOS SWICD loading detection 39PIO0ICommunication request from mechan

25、ism DSPH: Data request 40CD SRAMSTBO1M-bit SRAM standbyH: SRAM standby 41EPMIFlash EPM inputConnects to VSS 42CD LOE LIM SWICD detection (Chucking SW)H: Loading completed, L: No disc 6 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY Pin No.Pin NameI/OApplication Tr

26、uth Value Table Processing Operation Description 43PON CDOCD mechanism power supply controlH: Power ON 44CD LOEJI/OCD motor controlqRefer to the truth value table 45CD MOTORI/OCD motor controlqRefer to the truth value table 46VFD CEOVFD control request 47CD DRIVEMUTEOMotor driver mute output 48CD CC

27、EOCD mechanism chip enable 49NC-Not 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 CCWIVOL key inputDetects pulse width 57ROTARY CWIVOL key inputDetects pulse

28、 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 GND I/OIC2 external input quick charge control L: OFF, Hi-Z: Quick charge, When IC2 is in source select: Hi-Z, Mute L: L, M

29、omentary 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 unitH: Reset, L: Normal 71LX CONOStart-up request to slave unitH: Slave u

30、nit 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 SVROSVR discharging circuit During 500ms after power OFF and momentary power dow

31、n: 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 DETIDetection of momentary power down BU found: L, No BU/Momentary power do

32、wn: H (Operates after less than 4ms after momentary power down is detected) 8183NCONot used Output L fi xed 84TUN SMETERIS-meter input MICROCOMPUTERS TERMINAL DESCRIPTION 7 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY Pin No.Pin NameI/OApplication Truth Value Ta

33、ble Processing Operation Description 85TYPE1IDestination switchingeRefer to the truth value table 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 offset detecte

34、d. 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 truth value tabl

35、e 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 TERMINAL DESCRI

36、PTION 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 2.4V0V KDC-W3037A/W3037G/ W311A/W311G/W4037 2.4V1.2VKDC-W3537A/W3537G 2.4V2.4VKDC-W237A/W237G r Power supply IC (IC4) control SEL1 (Pin 1

37、0) PS1-2PS1-3PS2-1ILLUMIP-CONP-ANT LLLOFFOFFOFF LLHONOFFOFF HLHONONOFF HHHONONON SEL2 (Pin 11) PS1-1PS2-2AUDIO/SW5AM LLOFFOFF HLONOFF HHONON 8 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/W312AY/W312G/W312GY/W312SAY Example :. KeyDescription of displayDescription 5 Disc EJECT times display

38、 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. 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 ProcedureNo

39、te Press and hold the 1 key and 3 key and reset. All lamps blink when it is detected that the sub-clock resonator is disconnected. Do not display “CODE_OFF”, “CODE_ON” or “CODE_NG” when Power is ON. When having started up in the test mode, change the LINE MUTE inhibition time from 10 seconds to 1 se

40、cond. When operating in the test mode, even if a DC offset error occurs, detection information is not written in the E2PROM. When operating in the test mode, CD mechanism error log information clear mode, and DC offset error detection information clear mode, do not perform DEMO mode operations. Also

41、, do not display DEMO ON/OFF option items in the MENU in STANDBY source in the above modes. Forced disc ejection is prohibited in the test 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

42、 DescriptionDefault values SourceSTANDBY DisplayDisplay lights are all turned on. Volume-10dB (“30” is displayed.) Bass BoostOFF CRSCOFF regardless of having/not having the switching function. AUXON System QNATURAL (FLAT) PreoutRear TEST MODE 9 KDC-W241AY/W241GY/W3041A/W3041AY/W3041G /W3041GY/W312A/

43、W312AY/W312G/W312GY/W312SAY Special displays when all lights are on in STANDBY source KeyDescription of displayDescription CommonAll lights ON.All lights ON. 1 Destination terminal condition indication TYPE : 11 “TYPE” indicates system -com (IC1) destination, and shows real-time condition of the des

44、tination terminal. Development ID condition indication 704A25 . 00Development ID Version (system -com: IC1) 2Serial No. display 00000000Serial No. is displayed (8 digits) 3 Power ON time display PON0HXX 0050 is displayed for “XX”. When less than 1 hour, displayed by increments of 10 minutes. PONXXXX

45、X0000110922 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 Disc operation time display CDT0HXX 0050 is displayed for “XX”. When less than 1 hour, displayed by increments of 10 minutes. CDTXXXXX0000110922

46、 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 time. (Cleared only for displayed media.) 5 Disc EJECT times display EJCXXXXXDisc EJECT times display. MAX 65535 (times) 5 While disc EJECT ti

47、mes 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. MAX 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.

48、FM ROM correction version display RO123The number is the ROM correction version number. ERRWhen E2PROM is not installed. RWhen not written in yet. RWhen data not matched. (due to the difference in versions) AMROM data transfer Audio data initialization AUDINITAUDIO setting value is re-set to the tes

49、t mode default value. Forced Power OFF information display POFFNo forced power OFF POFFSEC Forced power OFF because of missing Security Code. (Code security supporting model) POFFPNL Forced power OFF by communication error between system -com and panel. 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 clear