Kenwood-KD-CW-237-GY-Service-Manual电路原理图.pdf

© 2006-12 PRINTED IN JAPANB53-0483-00 (N)229CD RECEIVERKDC-W237AY/W237GYKDC-W3037AY/W3037GYKDC-W311AY/W311GYKDC-W3537AY/W3537GY/W4037YSERVICE MANUALThis product uses Lead Free solder.* Depends on the model. Refer to the parts list.SPARE TDF PANELMAIN UNIT NAME TDF PARTS No. TDF NAMEKDC-W237AY Y33-2660-60 TDF-W237AKDC-W237GY Y33-2660-61 TDF-W237GKDC-W3037AY Y33-2650-63 TDF-W3037AKDC-W3037GY Y33-2650-64 TDF-W3037GKDC-W311AY Y33-2650-65 TDF-W311APanel assyKDC-W3537AY/W3537GY (A64-4042-12)Panel assyKDC-W4037Y (A64-4038-12)KDC-W311GY Y33-2650-66 TDF-W311GKDC-W3537AY Y33-2650-61 TDF-W3537APanel assyKDC-W311AY/W311GY (A64-4057-12)AUTO AMEDISP/KDC-W237AMSCAN RDM REP F.SELFMSCRLVOLATTAUDSET UPMENUB.BOOSTKDC-W3037AMSCAN RDM REP F.SELFMSCRLDISP/PTYVOLATTAUDSET UPTI AMEMENUB.BOOSTKDC-W311AMSCAN RDM REP F.SELFMSCRLDISP/PTYVOLATTAUDSET UPTI AMEMENUB.BOOSTKDC-W3537AMSCAN RDM REP F.SEL M.RDMFMSCRLDISP/PTYVOLATTAUDSET UPTI AMEMENUB.BOOSTKDC-W4037AMSCAN RDM REP F.SEL M.RDMFMSCRLDISPSW/PTYVOLATTAUDSET UPTI AMEMENUB.BOOSTPanel assyKDC-W237AY/W237GY (A64-4058-02)Panel assyKDC-W3037AY/W3037GY (A64-4056-12)KDC-W3537GY Y33-2650-62 TDF-W3537GKDC-W4037Y Y33-2650-60 TDF-W4037Antenna adaptor(T90-0523-05)DC cord(E30-6427-05)Lever(D10-4589-04) x2* Escutcheon(B07-xxxx-xx)Mounting hardware assy(J21-9716-03)Carrying case(W01-1685-05)* Remote controller assy (RC-557)(A70-2087-05)Battery(Not supplied)2KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037YBLOCK DIAGRAM2161FRONT/P. ON FLBU DETPHONEACC DETRSTPHONEACC DET / BU DETPS1-1 / PS1-2 / PS1-3P. ON FLPS2-1 / PS2-2959BU DET113MUTE8R11-15123331ROM CORRECTION (NOT USED)11REAR/SW1111R80-82P-ANTP-CONB.U.ACCPHONESP-OUTPS2-1 / PS2-2PS1-1 / PS1-2 / PS1-3R1031FL+B2LX-BUSE-VOLIC2 or IC3A8VSYSTEM u-COMBUPOWERDC-DETQ701-704PRE-OUTPHONEACC-DETQ101SURGE-Q103BU-DETQ102SW14VQ1Q2DC-CNA8VSERVO+BD5BU5SW5DETBUDC-CN etcBU5PAN5VWIREDREMOTERESET ICIC8ILLUMI+BCNRESETENCODERROTARYREMOTEILLUMIKEYMATRIXKEYVFDIC1SW5IC6IC2J1+BILLUMIILLUMI+BAM+BS1ED1CN4,J5MUTEQ705J4J2A1SERVO+BA8VQ302BU51/2WRx5Q301BU5BU5Q901-903DME1BU5SW5CDSERVOSW5ICCN3to GNDS3J1SW5AM+BA8VTUNERFRONT-ENDANT.DECODERRDSIC7SW5ANALOGSWIC9E2PROMSW5BUMECHACDCONTSWQ401A8V A8VPRE-OUTMUTEBU5SW5 DSIF-AUXJ2PANEL DETRx31/2WIC1BU5SW5SW14VFL+BIC4POWERSUPPLYICFL+BJ3BU5IC10VFDDRIVERQ8,9Q7ELECTRIC UNIT (X34- )SWITCH UNIT (X16- )3KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037YVREF8EJE-SW12EJE-SWLOS-SWLOE-SWMOTORLO/EJA.GNDA8VA,B,C,E,FTR OUTFO OUTDM OUTFM OUTA3.3VLDSIGNALS.GNDS7.5VFO OUTTR OUTDM OUTFM OUTDRV MUTESOSRAMSTBSIBUCKCCEPIO0R246,247SRAMSTBBUCKCCEPIO0SOSIMRST MRSTC88,R82C87,R83R-chL-ch L-chR-chZDET MUTE L/RD.GNDD GND BU1.5VSW1.5VSW3.3V AGNDBU5VP. O NE FACBTR COILFO COILAPCIC416.934MHzCLOCKIC33.3V REGIC7LOADING &MOTORDRIVERMOTORSPINDLES2S4S1S3(0-01)SLEDMOTORDM1DM2X1Q1RF AMPSERVOMP3 DECODERWMA DECODER1M bit SRAMPROCESSORAAC DECODER+LEVELSHIFTQ11SHIFTLEVELQ12LEVELSHIFTSHIFTLEVELQ10CR FILTERCR FILTERREVERSALCIRCUITQ13BU1.5V REGIC5IC6IC11SW3.3V REGSW1.5V REGONLYLOADING &DPU1CD PLAYER UNIT (X32-597x-xx)BOARDMOTHER(X34- )BLOCK DIAGRAM4KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037Y ELECTRIC UNIT (X34-467x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 System µ-COM Controls FM/AM tuner, the changer, CD mechanism, panel, volume and tone.IC2,3 E-VOL Controls the source, volume and tone.IC4 Power Supply IC Outputs 5Vx2, 8.1Vx2, 10.2V, P-CON and P-ANT.IC6 Power IC Amplifies the front L/R and the rear L/R to 50W or 45W maximum.IC7 RDS IC RDS decoder.IC8 Reset IC Lo when detection voltage goes below 3.6V.IC9 Analog SW Multiplex triple 2-channel analog SW.Q1 SW14V ON when the base goes Hi.Q2 Servo+B AVR When Q3s base goes Hi, Servo+B AVR outputs 7.5V.Q3 Control SW for Servo+B ON when the base goes Hi.Q7 VFD+B SW ON when the base goes Hi.Q8 VFD+B AVR When Q9s base goes Hi, Servo+B AVR outputs 10.5V.Q9 Control SW for VFD+B ON when the base goes Hi.Q101 ACC DET ON when the base goes Hi during ACC is applied.Q102 Serge DET When the base goes Hi, surge voltage is detected.Q103 BU DET ON when the base goes Hi during BU is applied.Q104,105 Mute Control ON when the base goes Hi.Q301 Panel 5V SW ON when the base goes Lo.Q302 DSI ILLUMI SW ON when the base goes Hi.Q401 IC9 Control SW Switches to AUX when the base goes Hi, and switches to LX-BUS (CD-CH) when the base goes Lo.Q402 Quick Charge Voltage SW Charges voltage quickly when the base goes Hi.Q701,702 Pre-out Mute SW When a base of the 4 transistors goes Hi, pre-out is muted.Q705 Mute Driver for Pre-out ON when the base goes Lo.Q901 DC Offset DET ON when the base goes Hi after Q902s and Q903s outputs are separated.Q902,903 DC Offset DET SW ON when the bases go Lo after IC6s SP-OUTs (DC) are separated. SWITCH UNIT (X16-386x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 VFD DriverIC3 Remote Control SensorQ1 GREEN LED SW ON when the base goes Hi.Q2 RED LED SW ON when the base goes Hi. CD PLAYER UNIT (X32-5970-00)Ref. No. Application / Function Operation / Condition / CompatibilityIC3 4ch BTL DriverDriver for focusing & tracking coil, driver for sled & spindle motor, and operation for discloading & ejection.IC4 Servo DSP with built-in Audio DAC With built-in MP3/WMA/AAC decoder and 1M-bit-SRAM.IC5 D1.5V REG. Power supply for digital 1.5V.COMPONENTS DESCRIPTION5KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037YRef. No. Application / Function Operation / Condition / CompatibilityIC6 D3.3V REG. Power supply for digital 3.3V.IC7 A3.3V REG. Power supply for audio 3.3V.IC11 BU1.5V REG. Power supply for back-up 1.5V.Q1 APC (Auto Power Control) Drives LD (Laser Diode).Q1012 5V3.3V Level Shift Converts signal from 5V to 3.3V, or from 3.3V to 5V.Q13 Inverter Inverts ZDET signal.D1 Level DownLowers signal level by about 1.2V so that Lo level signal that turns the regulator ON/OFFsurely becomes Lo judgment level of the regulator SW.D2 Laser Diode Protection Prevents reverse bias which is applied to laser. Laser destruction prevention.D3,4 Static Electricity Countermeasure Prevents malfunction by static electricity. SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT)Pin No. Pin Name I/O ApplicationTruth ValueProcessing Operation DescriptionTable1 LX DATA M I/O Data to slave unit Pull-down (GND)2 LX CLK I/O LX-BUS clock 125k65kHz35 NC - Not used Output Lo fixed6 REMO I Remote control signal input Detects pulse width7NC-Not used Output L fixed8 BYTE I Memory extended bus width setting Connects to VSS9 CNVSS - Connects to VSS10 XCIN - 32.768kHz11 XCOUT - 32.768kHz12 RESET - L: Reset13 XOUT - 10.0MHz14 VSS -15 XIN - 10.0MHz16 VCC1 -17 NMI I Connects to VSS18 PANEL DET I Panel communication detection H: Panel detached, L: Panel attached19,20 NC - Not used Output L fixed21 ROMCOR DET I E2PROM writing request H: Writing22,23 NC - Not used Output L fixedMICROCOMPUTERS TERMINAL DESCRIPTIONCOMPONENTS DESCRIPTION6KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037YPin No. Pin Name I/O ApplicationTruth ValueProcessing Operation DescriptionTable24 PON FL O Key illumination power supply control ON: H, OFF: L25 NC - Not used26 PON PANEL I/O Panel 5V controlON: L, Momentary power down/Panel detached: Hi-Z, 11 minutes after ACC OFF: Hi-Z27 NC - Not used Output L fixed28 PWIC BEEP O Beep output29 AUD SCL I/O E-VOL clock output30 AUD SDA I/O E-VOL data input/output31 VFD SYS DATA O VFD data output32 VFD PAN DATA I VFD data input33 VFD CLK O VFD clock output 125kHz34 VFD BLK O VFD data blanking outputH: Reset cancelled, L: Reset, Momentary power down/Panel detached: L, 11 minutes after ACC OFF: L35 CD SI O CD mechanism serial output36 CD SO I CD mechanism serial input37 CD CLK O Serial clock output 1MHz38 CD LOS SW I CD loading detection39 PIO0 I Communication request from mechanism DSP H: Data request40 CD SRAMSTB O 1M-bit SRAM standby H: SRAM standby41 EPM I Flash EPM input Connects to VSS42 CD LOE LIM SW I CD detection (Chucking SW) H: Loading completed, L: No disc43 PON CD O CD mechanism power supply control H: Power ON44 CD LOEJ I/O CD motor control q Refer to the truth value table45 CD MOTOR I/O CD motor control q Refer to the truth value table46 VFD CE O VFD control request47 CD DRIVEMUTE O Motor driver mute output48 CD CCE O CD mechanism chip enable49 CD DISC8 SW I 8cm disc detection Pull-up (B.U.)50 CD MRST O CD mechanism µ-com reset H: Normal, L: Reset5153 NC - Not used Output L fixed54 CD MUTE I CD mute request L: Mute request55 CD DISC12 SW I 12cm disc detection Pull-up (B.U.)56 ROTARY CCW I VOL key input Detects pulse width57 ROTARY CW I VOL key input Detects pulse width58 NC - Not used Output L fixed59 DSI I/O DSI control OFF: Hi-z, Panel detached: Pulse drives, ON: H60 RDS DATA I RDS decoder data input61 RDS QUAL I RDS decoder QUAL input62 VCC2 -MICROCOMPUTERS TERMINAL DESCRIPTION7KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037YPin No. Pin Name I/O ApplicationTruth ValueProcessing Operation DescriptionTable63 NC - Not used Output L fixed64 VSS -65 RDS AFS M I/O Noise detection time constant switching w Refer to the truth value table66 TUN IFC OUT I Front-end IFC-OUT input H: Station found, L: No station67 PON EXT GND I/O IC2 external input quick charge controlL: OFF, Hi-Z: Quick charge, When IC2 is in source select:Hi-Z, Mute L: L, Momentary power down/Power OFF: L68 MUTE I/O Mute L: Mute OFF, Hi-Z: Mute ON69 ANALOG CON OAUX/LX audio switchingAUX: H (Switches after 100ms after first-out mutebegins to work), LX/Other source: L70 LX RST O Forced reset to slave unit H: Reset, L: Normal71 LX CON O Start-up request to slave unit H: Slave unit ON, L: Slave unit OFF72 LX MUTE I Mute request from slave unit H: Mute ON, L: Mute OFF73 LX REQ M O Communication request to slave unit74 RDS CLK I RDS decoder clock input75 LX REQ S I Communication request from slave unit Pull-down (GND)76 PWIC SVR O SVR discharging circuitDuring 500ms after momentary power down: H,Since then: L77 PWIC STBY O Power IC standby control Power ON: H, Power OFF: L78 PWIC MUTE O Power IC muteSTANDBY source/Momentary power down: L,TEL mute: L79 ACC DET I ACC power supply detection ACC found: L, No ACC: HBU found: L, No BU/Momentary power down: H80 BU DET I Detection of momentary power down (Operates after less than 4ms after momentarypower down is detected)81,82 NC O Not used Output L fixed83 RDS NOISE I FM noise detection84 TUN SMETER I S-meter input85 TYPE1 I Destination switching e Refer to the truth value table86 TYPE2 I Destination switching e Refer to the truth value table87 PWIC DC DET I DC offset detectionIf DC offset is found 20 times in 100ms with conditionof over 1.0V, it will be judged as DC offset detected.88 LINE MUTE I Line mute selection TEL mute: Below 1V, NAVI mue: Over 2.5V89 OFFSET DET I Power IC offset detection90 PS2 2 O Power supply IC control r Refer to the truth value table91 PS2 1 O Power supply IC control r Refer to the truth value table92 PS1 1 O Power supply IC control r Refer to the truth value table93 PS1 2 O Power supply IC control r Refer to the truth value table94 PS1 3 O Power supply IC control r Refer to the truth value table95 PON - Not used POWER ON: H, POWER OFF: LMICROCOMPUTERS TERMINAL DESCRIPTION8KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037Y Truth value tableq CD motor controlCD motor CD loading/ejectStop L LLoad H LEject H HBrake H Hi-zw AFS controlRDS AFS M ConditionAFS MID L Except AF search, seeking or tuner sourceAFS HIGH Hi-Z Normal receptione Destination switchingTYPE 2 TYPE 1Model(Pin 86) (Pin 85)3.6V 0V KDC-W3037AY/W3037GY/W311AY/W311GY/W4037Y3.6V 1.2V KDC-W3537AY/W3537GY3.6V 2.4V KDC-W237AY/W237GYr Power supply IC (IC4) controlSEL1 (Pin 10)PS1-2 PS1-3 PS2-1 ILLUMI P-CON P-ANTLLLOFF OFF OFFLLHONOFF OFFHLHONONOFFHHHONONONSEL2 (Pin 11)PS1-1 PS2-2 AUDIO/SW5 AMLLOFF OFFHLONOFFHHONONPin No. Pin Name I/O ApplicationTruth ValueProcessing Operation DescriptionTable96 AVSS -97 REF CON O VREF control Connects to VREF98 VREF -99 AVCC -100 LX DATA S I Data from slave unit Pull-down (GND)MICROCOMPUTERS TERMINAL DESCRIPTION9KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037Y ExampleKey Description of display Description5 Disc EJECT times displayE J C X X X X XDisc EJECT times display. MAX 65535 (times)5 While disc EJECT times is displayed, press and hold for2 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 modeProcedure NotePress and hold the 1 key and 3 key and reset. While “ ” is displayed, power can be turned ON for only 30 minutes.(KDC-W3537AY/W3537GY/W4037Y only)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 second.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 notperform DEMO mode operations.Also, 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 modeProcedure NoteReset, momentary power down, ACC OFF, Power OFF, Panel detached. Clearing the test mode Test mode default conditionDescription Default valuesSource STANDBYDisplay Display lights are all turned on.Volume -10dB (“30” is displayed.)Bass Boost OFFCRSC OFF regardless of having/not having the switching function.AUX ONSystem Q NATURAL (FLAT)Beep Sound on with a key pressed regardless of any settings.Preout Sub Woofer:.TEST MODE10KDC-W237AY/W237GY/W3037AY/W3037GY/W311AY/W311GY/W3537AY/W3537GY/W4037Y Special displays when all lights are on in STANDBY sourceKey Description of display DescriptionCommon All lights ON. All lights ON.1 Destination terminalT Y P E : 1 1“TYPE” indicates system µ-com (IC1) destination, and showscondition indication real-time condition of the destination terminal.Development ID condition6 1 1 A 2 3 . 0 0Development ID Version (system µ-com: IC1)indication2 Serial No. display0 0 0 0 0 0 0 0Serial No. is displayed (8 digits)3Power ON time displayP O N 0 H X X0050 is displayed for “XX”. When less than 1 hour,displayed by displayed by increments of 10 minutes.P O N X X X X X0000110922 is displayed for “XXXXX”. MAX 10922 (hours)3 When Power ON time is displayed, press and hold for2 seconds or longer to clear Power ON time.4 Disc operation time displayC D T 0 H X X0050 is displayed for “XX”. When less than 1 hour,displayed by increments of 10 minutes.C D T X X X X X0000110922 is displayed for “XXXXX”. MAX 10922 (hours)4 While the disc operation time is displayed, press and hold f