Kenwood-KDC-2031-SG-Service-Manual电路原理图.pdf

© 2004-12 PRINTED IN JAPANB53-0234-00 (N)1813CD RECEIVERKDC-2031SA/SAYKDC-2031SG/SGYSERVICE MANUALANTENNA ADAPTOR(T90-0523-05)SPARE TDF PANELMAIN UNIT NAME TDF PARTS No. TDF NAMEKDC-2031SA/SAY Y33-2140-66 TDF-2031SAKDC-2031SG/SGY Y33-2140-67 TDF-2031SGMOUNTING HARDWARE ASSY(J21-9716-03)PLASTIC CABINET ASSY(A02-2736-03)DC CORD(E30-6413-05)LEVER(D10-4589-04) x2ESCUTCHEON(B07-3122-01)VOLAUDFFSET UPMONO SCAN RDM REP/AUTOAMEPANEL ASSYKDC-2031SA/SAY/SG/SGY (A64-3461-02)This product uses Lead Free solder.2KDC-2031SA/2031SAYKDC-2031SG/2031SGYBLOCK DIAGRAMMECHACD or MDCHANGERJ2E-VOLIC10&AM AGCQ501FM AGCL506J4TUNERIC11E2PROMSYSTEM u-COMIC1IC7RDSDECODERRST ICIC8PRE MUTEQ351,352IC4POWER ICMUTE LOGICIC6SURGE DETBU DETACC DETQ51Q52Q53J1PAN5VQ151Q72,73SERVOVFD REGIC15POWER SUPPLY ICIC3ED1VFDwithVFD DRIVERIC1REMOTEIC3VOLS11KEY MATRIXDSIQ155.J6SERVOA8VBU5VAUDIO OUTAM+BANTMPX OUTMPX IN800mV1200mVAUDIO OUTBU5VA8VBACK-UPSP OUTBACK-UPACCTEL MUTEP-ANTP-CONPAN5SERVOP-ANTSW5VAM+BA8VBU5VP-CONSW5VAM+BAUDIO+BVCCILLUMIBU5VILLUMIPAN5V BU5VPRE OUTKEY:CHANGERCD/MD RECEIVERFM (E Type)FM (J/K Type)AM (J/K Type)AM (E Type):1800mV1372mV600mV855mV3600mV3600mVELECTRIC UNIT (X34-)SWITCH UNIT (X16-)7VREFL-chR-chA. GNDA8VD. GNDBU5VLOE/LIM SW12EJE SWLOS SWS7.5VLO/EJMOTORS. GNDVREFVREF224DRV MUTEMUTEDOUTDATA42CLKMSTOPMRSTMUTE LMUTE R22 HL125243202113151149768181211102219EFACBTR COILFO COILAPCSERVOu-COMIC2Q116.934MHzCLOCKX1DRIVERMOTORIC3PROCESSORLPFIC48V SWQ4Q3SWS3S1S2D. GNDRF AMPIC1REF5V REGD2S. GNDA. GNDD. GNDSLEDLOADING5V SWQ2D. GNDD. GNDLOADING & SLEDMOTORSPINDLE MOTORAMPQ5,6,D3CURR.DM1DM2SW +5VA+5VPICK-UP (DPU1)CD PLAYER UNIT (X32-5750-00)BOARD (X34-)MOTHERMECHA ASSY (X92-)3KDC-2031SA/2031SAYKDC-2031SG/2031SGYCOMPONENTS DESCRIPTION ELECTRIC UNIT (X34-3412-7x)Ref. No. Application / Function Operation / ConditionIC1 SYSTEM µ-COM System control.IC3 POWER SUPPLY DC5Vx2, 7.9Vx1, 8.1Vx1, 10.3V, P.CON, P-ANT output.IC4 POWER IC Audio signal amplifier.IC6 MUTE LOGIC Mute control.IC7 RDS DECODER For other models.IC8 RESET “L” when detection voltage goes below 3.6V.IC10 E-VOL & TUNER E-VOL, Tuner, Stereo decode.IC11 E2PROM Saves and writes tuner adjustment data.IC15 VFD REGULATOR 11.3V output voltage for LED and VFD.Q51 SERGE DET “ON” when the base goes “H”.Q52 BU DET “ON” when the base goes “H”.Q53 ACC DET “ON” when the base goes “H”.Q71 SERVO+B CONTROL SW “ON” when the base goes “H”.Q72,73 SERVO+B AVR Output voltage level : 7.5V.Q74 IC3 CONTROL SW “ON” when the base goes “H” (Output voltage : 10.3V).Q151 PANEL 5V SW “ON” when the base goes “L”.Q155 DSI ILLUMI SW “ON” when the base goes “L”.Q252 IC4 STBY SW “ON” when the base goes “L”.Q330 Q351, 352 MUTE DRIVER “ON” when the base goes “L”.Q351 Lch PRE MUTE SW Pre-output is muted when the base goes “H”.Q352 Rch PRE MUTE SW Pre-output is muted when the base goes “H”.Q501 AM RF AMP Adjusts for AM-RF gain. CD PLAYER UNIT (X32-5750-00)Ref. No. Application / Function Operation / ConditionGeneration of RF signal based on the signals from the APC circuit and pickup, andIC1RF AMPLIFIER responding generation of servo error (focusing error and tracking error) signals.to CD-RW Detection of dropout, anti-shock, track crossing and off-tracking conditions, includedgain control function during CD-RW.Focusing, tracking, sled and spindle servo processing.IC2CD SIGNAL PROCESSOR Automatic adjustment (focusing, tracking, gain, offset and balance) operations.built-in µ-COM Digital signal processing (DSP, PLL, sub-codes, CIRC error correction, audio datainterpolation processing) operations, and microcomputer function.IC3 4ch BTL DRIVERFocusing coil, tracking coil, spindle motor and sled motor driver, disc loading andeject operation.IC4 L.P.F. (LOW PASS FILTER) 2nd low pass filter for audio signals.Q1 APC (AUTOMATIC POWER CONTROL) LD power control.Q2 DIGITAL +5V SW “ON” When P. ON signal goes “L”.4KDC-2031SA/2031SAYKDC-2031SG/2031SGYRef. No. Application / Function Operation / ConditionQ3 Q4 SW “ON” When P. ON signal goes “L” (SW+5V is ON).Q4 ANALOG +8V SW “ON” When P. ON signal goes “L” (Q3 is ON).Q5, 6 CURRENT AMP Current driver. SWITCH UNIT (X16-294x-xx)Ref. No. Application / Function Operation / ConditionIC1 VFD DRIVERIC3 REMOTE SENSORQ1 GREEN LED SW “ON” when the base goes “H”.Q2 RED LED SW “ON” when the base goes “H”.Q21 PAN SW5V “ON” when the base goes “H”.COMPONENTS DESCRIPTION SYSTEM µ-COM : IC1 on X34- (ELECTRIC UNIT)Pin No.ActivePin Name I/O Application Processing Operation(H/L)1 DC ERR I DC offset detection input2 LINE MUTE I Phone detection NAVI MUTE : Over 2.5V, TEL MUTE : Below 1V3ROTARY CW I Rotary encoder input4AVSS -5 TUN TYPE1 I E-VOL setting switch Refer to “TUN TYPE” on the TRUTH TABLE6 TUN TYPE2 I E-VOL setting switch Refer to “TUN TYPE” on the TRUTH TABLE7AVREF1 -8 VFD DATAF I Data input from VFD driver9 VFD DATAS O Data output to VFD driver10 VFD CLK O Clock output to VFD driver11 L VFD RST O Reset output to VFD driverDisplay OFF, Key reset, TDF panel OFF : LDisplay ON, Key scan : H12 VFD CE O Chip enable output to VFD driver13 ROTARY CCW I Rotary encoder input14 L TDF DET I TDF panel detection TDF panel OFF : H, TDF panel ON : L15 PWIC BEEP O Beep output1619 NC -20 L TUN ADJ I For adjusting IC10Adjustment=H, PS1-1,2=L, PS1-3=Hi-Z,PS2-1,2=Hi-Z, TUN DATA, CLK=Hi-Z21 TUN SD I Tuner search stop output H : Station exists, L : Station does not existMICROCOMPUTERS TERMINAL DESCRIPTION5KDC-2031SA/2031SAYKDC-2031SG/2031SGYPin No.ActivePin Name I/O Application Processing Operation(H/L)2224 NC -25 AUD SDA I/O Volume + tuner I2C data input and output26 AUD SCL I/O Volume + tuner I2C clock input and output27 H PWIC STBY O Power IC standby output Power IC ON : H, Power IC OFF : L28 H VOL MUTE O E-VOL mute output L : Mute OFF, Hi-Z : Mute ON29 L PWIC MUTE O Power IC mute output Power OFF : L, Standby : L, Tel mute : L30 TUN FANC OUT O Tuner block (inside the µ-com) check OK : L, NG : H31 RESET2 O Mute for reset Output L32 NC -33 VSS1 -34 NC -35 L ACC DET I ACC detection ACC exists : L, ACC does not exist : H36 L BU DET I Momentary power-down detectionBU exists : LBU does not exist (Momentary power-down) : H37 NC -38 PS2-2 O Power supply control output Refer to “POWER IC CONTROL” on the TRUTH TABLE39 PS2-1 O Power supply control output Refer to “POWER IC CONTROL” on the TRUTH TABLE40 PS1-1 O Power supply control output Refer to “POWER IC CONTROL” on the TRUTH TABLE41 PS1-2 O Power supply control output Refer to “POWER IC CONTROL” on the TRUTH TABLE42 PS1-3 O Power supply control output Refer to “POWER IC CONTROL” on the TRUTH TABLE43,44 NC -45 CD MUTE I CD mute request L : Mute request46 L CD MSTOP O CD mecha u-com stop H : mecha µ-com operates, L : mecha µ-com is stopped47 CD LOE LIM SW I CD detection (chucking switch) H : Loading is finished, L : Disc does not exist48 CD LOEJ I/O CD motor controlRefer to “CD MECHA CONTROL OPERATION”on the TRUTH TABLE49 CD MOTOR O CD motor controlRefer to “CD MECHA CONTROL OPERATION”on the TRUTH TABLE50 NC -51 L CD MRST O CD mecha µ-com reset H : Normal condition, L : Reset52 CD SCL I/O CD mecha I2C clock output53 CD DISC12 SW I 12cm CD detection54 CD LOS SW I CD loading detection55 CD SDA I/O CD mecha I2C data input and output56 OEM DISP CE I/O External display chip enable External display57 OEM DISP CLK I/O External display clock External display58 OEM DISP DATA I/O External display chip data External display59 DSI O DSI control DSI ON : H, DSI OFF : L, TDF DET=H (DSI blinks)60 L RESET IMICROCOMPUTERS TERMINAL DESCRIPTION6KDC-2031SA/2031SAYKDC-2031SG/2031SGYPin No.ActivePin Name I/O Application Processing Operation(H/L)61 NC -62 L PON FL O VFD power supply ONVFD ON : H, VFD OFF : LTDF DET H (DSI blinks) : L, TDF DET L : H63 KEY REQ I Communication request from VFD driver L : Key input64 NC -65 REMOTE I Remote control input66 NC -67 VSS0 -68 VDD1 -69 X2 -70 X1 -71 TEST -72 XT2 -73 XT1 -74 VDD0 -75 AVDD -7678 TYPE 3TYPE 1 I Destination switch79 NC -80 TUN SMETER I Tuner S-meter inputMICROCOMPUTERS TERMINAL DESCRIPTION TRUTH TABLE TUN TYPETYPE 1 TYPE 2General models commercially-designated as pure KENWOOD brand (Initial value)LLInitial value setting POWER SUPPLY IC (IC3) CONTROLSEL1 (Pin No. 11)PS1-2 PS1-3 PS2-1 ILLUMI P-CON P-ANTLLLOFF OFF OFFLLHONOFF OFFHLHONONOFFHHHONONONSEL2 (Pin No. 12)PS1-1 PS2-2 AUDIO SW5 AMLLOFF OFF OFFHLONON OFFHHONON ON CD MECHA CONTROL OPERATIONCD LOEJ CD MOTOR CD MECHA OPERATIONLH LoadHH EjectHi-Z L StopHi-Z H Brake7KDC-2031SA/2031SAYKDC-2031SG/2031SGY CD MECHANISM µ-COM : IC2 on X32- (CD PLAYER UNIT)Pin No.ActivePin Name I/O Application Processing Operation(H/L)1 TVD O Traverse drive output (PWM output).2 SPL O Spindle motor drive output (PWM output).3NC-No connection.4 PWM O Multipurpose PWM output.5 TBAL O Tracking balance adjustment output (PWM output).6 FBAL O Focusing balance adjustment output (PWM output).7 NRFDET I RF detection signal input. L : Detection8 OFT I Off-tracking signal input. H : Detection9 BDO I Drop-out signal input. H : Detection10 LDON O Laser-on signal output. H : Focus ON11 DSLB O DSL balance output.12 DVDD1 - Power supply for digital circuit.13 DVSS1 - GND for digital circuit.14 AVSS2 - GND for analog circuit. For DSL, PLL and A/D converter15 DSLF I/O Loup filter for DSL and bias output for ARF.16 ARF I RF signal input.17 RFSW I DSL circuit time constant switch.18 PLLF I/O Loup filter for PLL.19 PLLF2 I/O Loup filter character switch for PLL.20 IREF I Reference current input.21 RFENV I RF envelope signal input.22 TRCRS I Tracking cross signal input.23 TE I Tracking error signal input.24 FE I Focusing error signal input.25 AVDD2 - Power supply for analog circuit. For DSL, PLL and A/D converter26 AVSS1 - GND for analog circuit. For Lch/Rch audio output27 OUTR O Rch audio output.28 AVDD1 - Power supply for analog circuit. For Lch/Rch audio output29 OUTL O Lch audio output.30 DVSS3 - GND for digital circuit.31 CSEL -32 NC - No connection.33 ASEL -34 MSEL0 -35 MSEL1 -3639 NC - No connection.40 VREFP - Reference power supply input for A/D converter.41 HOT -MICROCOMPUTERS TERMINAL DESCRIPTION8KDC-2031SA/2031SAYKDC-2031SG/2031SGYMICROCOMPUTERS TERMINAL DESCRIPTIONPin No.ActivePin Name I/O Application Processing Operation(H/L)42 8EJE SW -43 12EJE/SDET SW -44 LOE/LIM SW ILoading-end detection / H : Loading-end detectionPick-up inner circumference detection. L : Pick-up inner circumference detection4549 NC - No connection.50 DVDD2 - Power supply for digital circuit.51 X1 I Main clock input.52 X2 O Main clock output.53 DVSS2 - GND for digital circuit.54 XSUB1 -55 NC - No connection.56 TEST1 - Test terminal. Normal condition : “H” fixed57 TEST2 - Test terminal. Normal condition : “H” fixed58,59 NC - No connection.60 DRV MUTE O Driver mute control. L : Mute ON, H : Mute OFF61 L MUTE L O Audio Lch mute output.62 L MUTE R O Audio Rch mute output.63 L RST I LSI reset input.64 OCD CLK -65 L MSTOP I Standby detection.66 DATA I/O I2C bus data line (Communication line to system µ-com). During serial writer is connected.67 SBIO I Data input. During serial writer is connected.68 L CLK I/O I2C bus clock line (Communication line to system µ-com). During serial writer is connected.69 TX O Digital audio interface signal output.70 NC - No connection.71 XSEL -72 MCNT I Loading control / Eject control. L : OFF (Host control), H : Mecha µ-com control73 P. ON O Audio & Servo power supply control. L : Power supply ON. H : Power supply OFF74,75 NC - No connection.76 CD-RW O CD-RW control. H : CD-RW, L : Normal disc77 NC - No connection.78 DVDD3 - Power supply for digital circuit.79 FOD O Focusing drive output (PWM output).80 TRD O Tracking drive output (PWM output).9KDC-2031SA/2031SAYKDC-2031SG/2031SGYTEST MODEHow to enter the test modeWhile simultaneously press PRESET “1” key and PRESET “3”key, press “RESET” button.How to release the test modePress “RESET” button. (The release cannot be achieved inthe conditions of POWER OFF and ACC OFF.)Initial conditions of the test mode The source is “STANDBY”. The displays all lit up. The volume is at 10dB (The display shows “30”.) LOUD is “OFF”. SYSTEM Q is “NATURAL”. BEEP is sounded at all time with the key depressed for lessthan 1 second.Special displays when all indicator lights are lightedWhen “PRESET” keys are pressed while all indicators for theSTANDBY sources are lighted, the following displays will ap-pear.PRESET Version display (4 digits : month, date)“1” key (4digits : hour, minute)(Display) : XXXX xxxxPRESET Serial number display (4 digits) (4 digits)“2” key (Display) : XXXX xxxxPRESET When pressed for less than 1 second : POWER ON“3” key time display (STANDBY source time is not counted.)(Display) : _ _ _ X xxxx MAX 60,000 (hours)* The display is cleared by pressing the key for morethan 2 seconds.PRESET When pressed for less than 1 second : CD operation“4” key time display(Display) : _ _ _ X xxxx MAX 60,000 (hours)* The display is cleared by pressing the key for morethan 2 seconds.PRESET When pressed for less than 1 second : CD EJECT“5” key number display(Display) : _ _ _ X xxxx MAX 60,000 (times)* The display is cleared by pressing the key for morethan 2 seconds.PRESET When pressed for less than 1 second : Panel open/“6” key close number display(Display) : _ _ _ X xxxx MAX 600,000 (times)* The display is cleared by pressing the key for morethan 2 seconds.“FM” ROM CORRECTION version displaykey (Display)Effective : Rxxx (x : number)Not effective (When not able to read) : R Not effective (When version is different) : R“AM” IC10 adjustment status (Refer to “ADJUSTMENT” onkey the following page.)(Display)Adjustment complete : E2OKAdjustment not completed : E2ERCommunication error : ICER* When other than “E2P _ OK _ _” , Pin No. 30 willbecome “H”.“ ”Mechanism error detection statuskey Communication error Error No. 1 Error No. 2 Error No. 3 Communication error (Error No. 1 is themost recent error.)(Display)Communication OK : ICOKCommunication error : ICERNot detected : En (n : 13)Detected : En ( : error code)* The display is cleared by pressing the key for morethan 2 seconds.10KDC-2031SA/2031SAYKDC-2031SG/2031SGYADJUSTMENT DC offset error detection confirmation modeConfirmation mode :While depressing PRESET “3” key and PRESET “6” keysimultaneously, press on the “RESET” button.(Display) Detected : DCERNot detected : DCOK* By pressing “CLK” key while “DCER” is being displayed,detection status is cleared. This will result in the display of“DCOK”.Release Method : Press “RESET” button. Mechanism memory clear confirmation modeConfirmation mode :While depressing “ATT” key and “Q” key simultaneously,press “RESET” button.(Display) : MCLR*Two seconds after the confirmation mode boots up, Mecha-nism memory clear as a result is displayed.(Display) Clear status display normal completion : CD _ OClear status display abnormal completion : CD _ Release Method : Press “RESET” button.After replacing the following parts, adjust as follows.REP