Kenwood-KD-CW-312-GY-Service-Manual电路原理图.pdf
This product uses Lead Free solder.This product complies with the RoHS directive for the European market.SERVICE MANUAL© 2007-10 PRINTED IN JA PANB53-0579-00 (N) 223KDC-W241AY/W241GYKDC-W3041A/W3041AYKDC-W3041G/W3041GYKDC-W312A/W312AYKDC-W312G/W312GY/W312SAYCD RECEIVERTDF SPARE-PANELMAIN UNIT NAME TDF PARTS No. TDF NAMEKDC-W241AY Y33-2840-66 TDF-W241AKDC-W241GY Y33-2840-67 TDF-W241GKDC-W3041A Y33-2840-60 TDF-W3041AKDC-W3041AY Y33-2840-60 TDF-W3041AKDC-W3041G Y33-2840-61 TDF-W3041GPanel assyKDC-W312A/AY (A64-4290-02)KDC-W312G/GY (A64-4290-02)KDC-W312SAY (A64-4293-02)KDC-W3041GY Y33-2840-61 TDF-W3041GKDC-W312A Y33-2840-62 TDF-W312APanel assyKDC-W241AY/W241GY (A64-4292-02)Panel assyKDC-W3041xx (A64-4289-02)KDC-W312AY Y33-2840-62 TDF-W312AKDC-W312G Y33-2840-63 TDF-W312GDC cord(E30-6427-05)Lever(D10-4589-04) x2Escutcheon(B07-3122-01)Mounting hardware assy(J21-9716-03)Carrying case(W01-1691-05)KDC-W3041KDC-W312KDC-W241KDC-W312GY Y33-2840-63 TDF-W312GKDC-W312SAY Y33-2840-68 TDF-W312SA2KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYBLOCK DIAGRAM2161FRONT/P.ON FLBU DETPHONEACC DETRSTPHONEACC DET / BU DETPS1-1 / PS1-2 / PS1-3P.ON FLPS2-1 / PS2-2959BU DET112MUTER11-15123331ROM CORRECTION (NOT USED)1REAR/SW111R80,81P-ANTP-CONB.U.ACCPHONESP-OUTPS2 1 / PS2 2PS1 1 / PS1 2 / PS1 3R1031FL+B5E-VOLIC2 or IC3A8VSYSTEM u-COMBUPOWERDC-DETQ701,702PRE-OUTPHONEACC-DETQ101SURGE-Q103BU-DETQ102Q2DC-CNA8VSERVO+BD5BU5SW5DETDC-CN etcPAN5VRESET ICIC8ILLUMI+BCNRESETENCODERROTARYREMOTEILLUMIKEYMATRIXKEYVFDIC1SW5IC6IC3J1+BILLUMIILLUMI+BAM+BS1ED1J5MUTEQ705J2A1SERVO+BA8VBU51/2WRx5Q301BU5BU5Q901-903DME1BU5SW5CDSERVOICto GNDS2J1SW5AM+BA8VTUNERFRONT-ENDANT.DECODERRDSIC7SW5E2PROMSW5BUMECHACDPRE-OUTMUTEBU5SW5F-AUXJ2PANEL DETRx21/4WIC1BU5SW5SW14VFL+BIC4POWERSUPPLYICFL+BJ3BU5IC10VFDDRIVERQ8,9Q7ELECTRIC UNIT (X34- )SWITCH UNIT (X16- )VREF8EJE-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.ONE 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- )3KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYCOMPONENTS DESCRIPTION ELECTRIC UNIT (X34-565x-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 Amplifi es the front L/R and the rear L/R to 50W maximum.IC7 RDS IC RDS decoder.IC8 Reset IC Lo when detection voltage goes below 3.6V.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.Q11 14V SW ON when the base goes Hi.Q12 14V SW ON when the base goes Lo.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.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 (X16-617x-xx)Ref. No. Application / Function Operation / Condition / CompatibilityIC1 VFD DriverIC3 Remote Control Sensor CD PLAYER UNIT (X32-5970-02)Ref. No. Application / Function Operation / Condition / CompatibilityIC3 4ch BTL DriverDriver for focusing & tracking coil, driver for sled & spindle motor, and operation for disc loading & 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.IC6 D3.3V REG. Power supply for digital 3.3V.IC11 BU1.5V REG. Power supply for back-up 1.5V.Q1 APC (Auto Power Control) Drives LD (Laser Diode).4KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYRef. No. Application / Function Operation / Condition / CompatibilityQ1012 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/OFF surely 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.COMPONENTS DESCRIPTION5KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYMICROCOMPUTERS TERMINAL DESCRIPTION SYSTEM µ-COM: IC1 on X34- (ELECTRIC UNIT)Pin No. Pin Name I/O ApplicationTruth ValueTableProcessing Operation Description1 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 L fi xed6 REMO I Remote control signal input Detects pulse width7 NC - Not used Output L fi xed8 BYTE - 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 VCC18 PANEL DET I Panel communication detection H: Panel detached, L: Panel attached19,20 NC - Not used Output L fi xed21 ROMCOR DET I E2PROM writing request H: Writing22,23 NC - Not used Output L fi xed24 PON FL O Key illumination power supply control ON: H, OFF: L25 NC - Not used Output L fi xed26 PON PANEL I/O Panel 5V controlON: L, Momentary power down/Panel detached: Hi-Z, 11 minutes after ACC OFF: Hi-Z27,28 NC - Not used Output L fi xed29 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 BUCK 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 disc6KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYPin No. Pin Name I/O ApplicationTruth ValueTableProcessing Operation Description43 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 NC - Not used50 CD MRST O CD mechanism µ-com reset H: Normal, L: Reset5153 NC - Not used Output L fi xed54 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 width5861 NC - Not used Output L fi xed62 VCC2 -63 NC - Not used Output L fi xed64 VSS -65 NC - Not used66 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 O AUX/LX audio switchingAUX: H (Switches after 100ms after fi rst-out mute begins 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 OFF 73 LX REQ M O Communication request to slave unit74 NC - Not used75 LX REQ S I Communication request from slave unit Pull-down (GND)76 PWIC SVR O SVR discharging circuitDuring 500ms after power OFF and momentary power down: H, Since then: L77 PWIC STBY O Power IC standby control Power ON: H, Power OFF: L 78 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: H80 BU DET I Detection of momentary power downBU found: L, No BU/Momentary power down: H (Operates after less than 4ms after momentary power down is detected)8183 NC O Not used Output L fi xed84 TUN SMETER I S-meter inputMICROCOMPUTERS TERMINAL DESCRIPTION7KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYPin No. Pin Name I/O ApplicationTruth ValueTableProcessing Operation Description85 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 condition of over 1.0V, it will be judged as DC offset detected.88 LINE MUTE I Line mute detection 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 NC - Not used Output L fi xed96 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 DESCRIPTIONTruth value tableq CD motor controlCD motor CD loading/ejectStop L LLoad H LEject H HBrake H Hi-ze Destination switchingTYPE 2(Pin 86)TYPE 1(Pin 85)Model2.4V 0VKDC-W3037A/W3037G/W311A/W311G/W40372.4V 1.2V KDC-W3537A/W3537G2.4V 2.4V KDC-W237A/W237Gr Power supply IC (IC4) controlSEL1 (Pin 10)PS1-2 PS1-3 PS2-1 ILLUMI P-CON P-ANTL L L OFF OFF OFFL L H ON OFF OFFH L H ON ON OFFH H H ON ON ONSEL2 (Pin 11)PS1-1 PS2-2 AUDIO/SW5 AML L OFF OFFH L ON OFFH H ON ON8KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAY Example:.Key Description of display Description5Disc EJECT times displayEJCXXXXX Disc EJECT times display. MAX 65535 (times)5While 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 modeProcedure NotePress 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 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 not perform 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)Preout RearTEST MODE9KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAY Special displays when all lights are on in STANDBY sourceKey Description of display DescriptionCommon All lights ON. All lights ON.1Destination terminal condition indicationTYPE:11“TYPE” indicates system µ-com (IC1) destination, and shows real-time condition of the destination terminal.Development ID condition indication704A25.00 Development ID Version (system µ-com: IC1)2 Serial No. display 00000000 Serial No. is displayed (8 digits)3Power ON time displayPON 0HXX0050 is displayed for “XX”. When less than 1 hour, displayed by increments of 10 minutes.PONXXXXX 0000110922 is displayed for “XXXXX”. MAX 10922 (hours)3When Power ON time is displayed, press and hold for 2 seconds or longer to clear Power ON time.4Disc operation time displayCDT 0HXX0050 is displayed for “XX”. When less than 1 hour, displayed by increments of 10 minutes.CDTXXXXX 0000110922 is displayed for “XXXXX”. MAX 10922 (hours)4While 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.)5Disc EJECT times displayEJCXXXXX Disc EJECT times display. MAX 65535 (times)5While disc EJECT times is displayed, press and hold for 2 seconds or longer to clear disc EJECT times.6Panel open/close times displayPC XXXXX PANEL open/close times display. MAX 65535 (times)6Press the key for more than 2 seconds while the PANEL open/close count is displayed and PANEL open/close count is cleared.FMROM correction version displayRO123 The number is the ROM correction version number.ERR When E2PROM is not installed.R When not written in yet.R When data not matched. (due to the difference in versions) AM ROM data transferAudio data initialization AUD I N I T AUDIO setting value is re-set to the test mode default value.Forced Power OFF information displayPOFF No forced power OFFPOFF SECForced power OFF because of missing Security Code. (Code security supporting model)POFF PNLForced power OFF by communication error between system µ-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/OFFFor 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 all CD information.TEST MODE10KDC-W241AY/W241GY/W3041A/W3041AY/W3041G/W3041GY/W312A/W312AY/W312G/W312GY/W312SAYCD information display modeKey Des
