Kenwood-KDCW-7027-Service-Manual电路原理图.pdf

© 2004-02 PRINTED IN JAPANB53-0130-00 (N)2704CD RECEIVERKDC-8026KDC-MP825KDC-MPV8025KDC-W7027SERVICE MANUALCD mechanism extension cord (24PIN) : W05-0935-00TDF PANEL INFORMATIONMODEL PARTS NO. PANEL NAME KDC-8026 KDC-MP825 KDC-MPV8025KDC-W7027Y33-1790-61 TDF-M7000*Size AA Battery(Not Supplied)Escutcheon(B07-3078-01)Plastic cabinet assy(A02-2731-13)Mounting hardware assy(J21-9823-03)* DC cord(E30-4942-05)* Antenna adaptor(T90-0552-05)Screw(N99-1734-05)Lever(D10-4674-04) x 2*Screw set(N99-1723-05)* DC cord(E30-6294-05)(E30-6295-05)*Remote controller assy(A70-2040-05) : RC-505* Depends on model. Refer to the parts list.Panel assyKDC-8026 (A64-3231-01)Panel assyKDC-MPV8025 (A64-3228-01)Panel assyKDC-W7027 (A64-3223-01)Panel assyKDC-MP825 (A64-3229-01)2KDC-8026/MP825KDC-MPV8025/W7027TUNERCDCHMECHAPANELTDF UNITSWITCH UNIT(X16-208)(X16-256)(X34- )(X16-254)DISPLAYUNIT(X16-255)BUFFERRDSDECODERBUFFERREMORESET SWKEY MATRIXFLSYSTEMMPXE-VOL&ACC DETTEL MUTEB.U DETSYSTEMDRIVERMUTEPOWERICACCTEL MUTEBACK UPSP OUT (FL)RESETKEY ILLIC14IC2IC1IC4IC8IC9Q303,304AM+BAGCE'S+PRE MUTEPRE MUTEPRE MUTEPRE OUT(FRONT)PRE OUT(REAR)(SUB WOOFER)PRE OUTAUX INOP AMPOP AMPOP AMPSP OUT (FR)SP OUT (RL)SP OUT (RR)EXT AMPDIMMER DIMMEREXT.AMP.CONANT-CON ANT CONP-CON P CONWIRED REMO/OPEL DISP I/FFOCUSSWWOWIC5IC20IC6IC9IC13IC12IC11Q207,208Q205,206Q203,204BU5VSW 5VSW 14V5VSERVOFL+BSW REGA8VPANELQ1,2Q3,601Q502,503Q4,5Q6-8Q9,602BU5VSW5VPANEL5VSW14VDC/DC A8VSERVOCD4.7VIC16MOTORDRDRMOTORIC15DC/DCROTARYENCODERIC7LEVELSHIFTLEVELSHIFTIC8u-COMIC11IC2MASKROM2.5VROMFLASHIC4BPFPANELSW5VIC63.3VSW3.3VQ5FL+BQ4FL3.3VQ2,3EEPROMEEP5VQ501IC1Q23,24Q26Q25IC18Q27Q29IC10Q6,10Q11-14IC19LEDLEDEEPROMMICROPROCESSORS-METERAUDIO OUTSERVO8VBU5VCD4.7VBACK UPFMAMCDQUALCHPANEL5KEYBU5V8VSW5V8V 8VSW5VBPF8V8V9V9V9V8V9VSW5VFL+BFACAGC8V8VBU5VBU5VBU5VSERVOILL+SW5VBLOCK DIAGRAM3KDC-8026/MP825KDC-MPV8025/W7027 SUB CIRCUIT UNIT (X16-2080-10)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 E2PROM E2PROM for security DISPLAY UNIT (X16-2540-10)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 Driver LCD driver (Include KEY input function)IC2 Driver LCD driverIC3 Remote control IC For Remote control sensorQ1 SW Key scan start SW “ON” when Q1 base level goes LQ2 Red LED SW Red LED is turned on when Q2 base level goes HQ5 VLCD AVR Reference voltageQ6 SW Power supply control SW “ON” when base level goes LQ11 Dimmer control LCD back light control “OFF” when Q11 base level goes LD26 VLCD AVR Reference voltage DISPLAY UNIT (X16-2550-10)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 Driver LCD driver (Include KEY input function)IC2 Driver LCD driverIC3 Remote control IC For Remote control sensorIC4 D/A converter For Variable illumination controlQ1 SW Key scan start SW ON when Q1 base level goes LQ2 Red LED SW Red LED is turned on when Q2 base level goes HQ5,D26 VLCD AVR Reference voltageQ6 SW Power supply control SW ON when base level goes LQ11-16 Illumination control Variable illumination control transistorQ62-64 Illumination control Variable illumination control transistor SWITCH UNIT (X16-2560-11)Ref No. Application / Functions Operation / Condition / CompatibilityQ1 DSI LED SW DSI LED blinks when Q1 base level goes H/LQ2 KEY Illumination SW (Green) KEY Illumination SW “ON” when the Q2 base level goes HQ3 KEY Illumination SW (Red) KEY Illumination SW “ON” when the Q3 base level goes HQ4 KEY Illumination SW (Blue) KEY Illumination SW “ON” when the Q4 base level goes H CD PLAYER UNIT (X32-5540-00)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 Mechanism control microprocessor -IC2 DSP CD signal processor, RF amp, Servo controlIC3 Decoder IC MP3/WMA decoderIC4 BTL driver Focus, Tracking coil, Feed and Spindle motor driver ICIC5 AVR SW3.3V AVRIC6 AVR BU3.3V AVRCOMPONENTS DESCRIPTION4KDC-8026/MP825KDC-MPV8025/W7027Ref No. Application / Functions Operation / Condition / CompatibilityIC7 AVR BU2.5V AVRIC8 Selector IC Serial audio data selectorIC9 AVR 3.3V AVR (IC2 DAC part)Q1,4 Level shift FET Level shift (3.3V - 5.0V)Q3,5 Level shift TR Level shift (3.3V - 5.0V)Q6 Level shift TR Level shift (3.3V - 5.0V)Q7 Level shift TR Level shift (3.3V - 5.0V)Q8 APC Auto power controlQ9,10 Switching TR Sub beam delay control switch ELECTRIC UNIT (X34-3040-10/11/21, X34-3042-71)Ref No. Application / Functions Operation / Condition / CompatibilityIC1 System control IC System control microprocessorIC2 E-VOL & tuner IC E-VOL. FM/AM tuner & stereo decoderIC3 Power supply IC For A8V AVRIC4 Audio power IC Audio power amplifierIC5 Power supply IC Switching regulator IC for CD5VIC7 Reset IC When BU5V line voltage is less than 3.5V, this IC output line is “L”IC8 Muting logic IC Control for MUTE, P-ANT & RESET mutingIC12 RDS decoder Decode for RDS signalIC13,14 Motor driver Control for Panel mechanism motorQ1,2 BU 5V AVR While BU is applied when BU5V regulator output is +5VQ3 SW5V AVR When Q3base level goes L, SW5V regulator output is +5VQ4,5 SW14V AVR When Q5 base level goes H, SW14V regulator output is +14VQ6-8 Audio 8V AVR When Q6 base level goes H, A8V regulator output is +8.4VQ9,34 Servo +B AVR When Q34 base level goes H, S+B regulator output is +7.4VQ1114 Illumination +B AVR When Q11 base level goes H, AVR output is +10.5VQ23,24 P-ANT SW When Q23 base level goes H, P-ANT SW output is +14VQ25,26 P-CON SW When Q26 base level goes H, P-CPN SW output is +14VQ27,28 P-CON protection Protect Q27 by turning on when P-CON output is groundedQ29 Buffer EX amp control bufferQ30 Small lamp det. SW When Q30 base level goes H, Q30 turned ONQ32 BU detector When Q32 base level goes H, Q32 turned ONQ33 ACC detector When Q33 base level goes H, Q33 turned ONQ51,52 Muting driver When base level goes L, muting driver is turned ONQ55,56,59,60 Pre-out muting SW When base level goes H, Pre-output is mutedQ63 E2P 5V SW When Q63 base level goes L, E2P 5V is out for E2P ROMQ102,103 AM +B SW When Q102 base level goes H, AM +B is out to tuner unitQ104 Buffer Composite signal buffer for RDSCOMPONENTS DESCRIPTION5KDC-8026/MP825KDC-MPV8025/W7027 SYSTEM MICROPROCESSOR : UPD703030GC042 (X34-304 : IC1)Pin No. Pin Name I/O Description / Processing Operation Fig.1 PLL DATA I/O Data input/output terminal for Tuner front-end2 AM+B I/O AM+B (AM operation : H)3 (FM+B) O FM+B (FM operation : H, Last FM : H with RDS,RBDS model)4PAN E2P DATA I/O Variable illumination D/A converter, E2PROM DATA terminal5PAN E2P CLK I/O Variable illumination D/A converter, E2PROM CLK terminal6 EVDD - VDD 5V7 EVSS - GND8 AFS O Time constant switching for noise detection (FM seek, AF search, AUTO 0 : L, Receiving : H)9 BEEP O BEEP audio output terminal10 REMO I Remote control input terminal11 P MUTE O Audio power IC muting control terminal (POWER OFF, ALL OFF, TEL MUTE : L)12 SVR O Audio power IC SVR discharge circuit control terminal13 IC2 SDA I/O CD mechanism, IC2, IC5, ROM correction DATA line14 IC2 CLK I/O CD mechanism, IC2, IC5, ROM correction CLOCK line15 P STBY O Audio power IC Stand-by terminal (POWER IC ON, ALL OFF : H, POWER IC OFF : L)16 P CON I/O Power control terminal (POWER ON : H, POWER OFF, ALL OFF : Hi-Z)17 DIMMER CONT O Dimmer control terminal (W-LED only : Pulse control F=1KHz, Normal : H)18 TEST - NC (GND)19 TYPE2 I Destination select terminal20 MUTE O MUTE output terminal (ON : OPEN, OFF : L)21 PRE MUTER O PREOUT (Rch) muting control terminal22 PRE MUTEL O PREOUT (Lch) muting control terminal23 BU DET I Momentary power dropped detection terminal (No Backup, Momentary power dropped : H, Backup : L)24 ACC DET I ACC detection terminal (With ACC : L, Without ACC : H)25 SW5V I/O SW5V control terminal (OFF : H, ON : L)26 EXT AMP CONT O External amplifier control terminal27 DIMMER I Small lamp detection terminal (ON : L, OFF : H)28 ANT CONT I/O Antenna control/ Destination select terminal (TUNER ON : H)29 P ON I/O SW14V, SW5V control terminal (POWER ON : H, POWER OFF : Hi-Z)30 ILL ON I/O FL, illumination control terminal (ON : H, OFF : Hi-Z)31 RESET I Reset input terminal32,33 XT1/XT2 - Sub clock (32.768kHz)34 REGC - Connect to 1µF capacitor35,36 X2/X1 - Main clock (20MHz)37 VSS - GND38 VDD - AVR 5V39 CLKOUT - NC40 LX REQ M O Communication request to external slave unit (Request : L)41 LX MUTE I Mute request from external slave unit (MUTE : H)MICROCOMPUTERS TERMINAL DESCRIPTION6KDC-8026/MP825KDC-MPV8025/W7027Pin No. Pin Name I/O Description / Processing Operation42 LX CON O External slave unit (ON : H, OFF : L)43 LX RST O Reset output to external slave unit (Normal : L, After system reset : H 400ms or more and then L)44 CD MECHA+B O CD4.7V output terminal (CD : H, Except CD source : L)45,46 TYPE0/TYPE1 I Destination select terminal47,48 IC2 TYPE0/TYPE1 I IC2 destination select terminal49 NC - NC50 E2P5V I/O E2PROM, D/A converter power supply control terminal (ON : L, OFF : Hi-Z)51 DSI I/O DSI control (ON : L, OFF : Hi-Z)52 L CE O CE output to LCD driver IC53 L INH O INN output to LCD driver IC (Normal : H, Reset, Momentary power dropped : L)54 VOL A I Volume input terminal55 DVDD - AVR 5V56 DVSS - GND57 VOL B I Volume input terminal58 M RST O Reset output to CD mechanism (Normal : H, Reset : L)59 M STOP O Stop request to CD mechanism (STOP : L, CD : H)60 CD SW3 I CD DOWN SW detection terminal (CD disc chucking : H)61 LO/EJ I/O CD mechanism loading/ eject selector (STOP, Brake : Hi-Z, LOADING : L, EJECT : H)62 MOSW O CD mechanism motor driver SW (LOADING, EJECT, Brake : H)63 FPM MOTOR B O FPM mechanism (Slider) control terminal 164 FPM MOTOR F O FPM mechanism (Slider) control terminal 165 FPM MOTOR O O FPM mechanism (Angle) control terminal 166 FPM MOTOR C O FPM mechanism (Angle) control terminal 167 O DATA I/O External display DATA terminal 168 O CLK I/O External display CLK terminal69 O CE I/O External display chip enable terminal70 M MUTER I Mute request from CD mechanism (Rch ON : L)71 AVDD - AVR 5V72 AVSS - GND73 AVREF I Connect to P-ON (29PIN)74 M MUTEL I Mute request from CD mechanism (Lch ON : L)75 PAN DET I PANEL, E2PROM detection terminal (With panel : L, Without : H)76 PHONE I PHONE detection terminal (TEL MUTE : 1V or less, NAVI MUTE : 2.5V or more)77 FPM SW4 IFPM mechanism position detect/ CD Mechanism detection terminal1(3.75V or more : No mechanism, 1.25V or more : H, Less than 1.25V : L)78 FPM SW1 I FPM mechanism position detect terminal 179 FPM SW2 I FPM mechanism position detect terminal 180 FPM SW3 I FPM mechanism position detect terminal 181 FPM PHOUT I FPM mechanism position detect terminal (2.2V or more : H) 182 S METER I S meter detection terminalMICROCOMPUTERS TERMINAL DESCRIPTION7KDC-8026/MP825KDC-MPV8025/W7027Pin No. Pin Name I/O Description / Processing Operation83 NOISE I FM noise detection terminal84 IFC OUT I Front end IFC OUT input terminal (Receiving station : 2.5V or more)85 POWER DET I Audio power IC DC offset detection86 CD SW4 I 8cmDISC detection terminal (8cmDISC : L)87 R CLK I RDS decoder clock input terminal88 LX REQ S I Receive request from external slave unit (Request : L)89 SC REQ I Communication request from panel microprocessor90 CD SW1 I LOADING SW detection terminal (LOADING start, POWER OFF : L)91 CD SW2 I 12cmDISC detection terminal (12cmDISC, POWER OFF : L)92 R QUAL I RDS decoder QUAL input terminal93 R DATA I RDS decoder DATA input terminal94 LX DATA S I Data input from external slave unit95 LX DATA M O Data output to external slave unit96 LX CLK I/O Clock input/ output with external slave unit97 L DATAL I Data input from LCD driver98 L DATAS O Data output to LCD driver99 L CLK O CLK output to LCD driver100 PLL CLK I/O Clock input/ output to Tuner front-endFig.1 FPM motor controlSLIDE FPM mechanismFPM MOTOR B FPM MOTOR F operationLLStandbyHLBackward operationLHForward operationHHBrakeANGLE FPM mechanismFPM MOTOR O FPM MOTOR C operationLLStandbyHLAngle open directionLHAngle close directionHHBrakeMICROCOMPUTERS TERMINAL DESCRIPTION MECHANISM CONTROL MICROPROCESSOR : 91CW12AFG-4VF6 (X32-554 : IC1)Pin No. Pin Name I/O Description / Processing Operation1 VREFL I Reference voltage input terminal2AVSS - GND for ADC3AVCC - Power supply for ADC (BU3.3V)4NCONC (OPEN)5 20RST O Reset control output terminal (for decoder) L : RESET, H : NORMAL6 20ACK I Acknowledge signal input terminal (for decoder)7 20STBY O Standby control (for decoder) H : STAND BY, L : NORMAL8,9 NC O NC (OPEN)10 20INT I Interrupt signal input terminal (for decoder)11 FOGUP I Interrupt for focus gain up control signal H : Focus gain UP, L : NORMAL8KDC-8026/MP825KDC-MPV8025/W7027Pin No. Pin Name I/O Description / Processing Operation12 LZM I 0bit muting detect (Lch) L : MUTE OFF, H : MUTE ON13 RZM I 0bit muting detect (Rch) L : MUTE OFF, H : MUTE ON14,15 NC O NC16 20CS O Chip select signal output terminal (for decoder)17 20LP O Latch pules signal output terminal (for decoder)18 20TXD0 I/O Serial data signal output terminal (for decoder)19 20RXD0 I Serial data signal input terminal (for decoder)20 20SCLK0 O Serial data clock output terminal (for decoder)21 DSPTXD1 O Serial data signal output terminal (for DSP)22 DSPRXD1 I Serial data signal input terminal (for DSP)23 DSPSCLK1 O Serial data clock output terminal (for DSP)24 AM0 I Select for ROM mode H : NORMAL, L : External ROM mode25 DVCC - BU3.3V26 X2 O Oscillator (16MHz)27 DVSS - GND28 X1 I Oscillator (16MHz)29 AM1 I BU3.3V30 RESET I Reset terminal L : RESET, H : NORMAL31,32 NC O NC33,34 EMU0,1 O NC35 DSPSTB O Data strobe signal output terminal36 DSPA0 O Command, parameter select signal H : Parameter, L : Command37 DSPRST O Reset control output terminal (for DSP)38 DSPINT I Interrupt signal input terminal (for DSP) H : Interrupt39 /DAC RESET O Reset signal output terminal (for DSP) L : RESET, H : NORMAL40 SEARCH O Search condition output terminal H : Search, L : NORMAL41 LOE/LIM_SW I SLT SW detect input terminal H : Inside4245 NC O NC (OPEN)46 PONE5 O +5V AVR control terminal (for VIDEO) H : Power ON47 PONE2.5 O +2.5V AVR control terminal (for VIDEO) H : Power ON48,49 NC O NC (OPEN)50 FLAGIN I C2 error detect terminal L : Correction OK, H : Correction NG5160 NC O NC (OPEN)61 /DAC PD O Reset control output terminal (for DAC) L : RESET, H : NORMAL62 DVSS - GND63 NMI I Request for non maskable interrupt signal input terminal64 DVCC - +VCC65 DAC MUTE O Muting control output terminal (for DAC) H : MUTE, L : MUTE OFF66 DAC PON O Audio power supply (for DXM-6550) H : POWER ON67 PONA5 O +5V Audio power supply (for DXM-6550) H : POWER ONMICROCOMPUTERS TERMINAL DESCRIPTION9KDC-8026/MP825KDC-MPV8025/W7027Pin No. Pin Name I/O Description / Processing Operation68 ESRST O Reset signal output terminal (for ES3890) L : RESET, H : NORMAL69 VMUTE O Video mute control terminal H : MUTE ON, L : MUTE OFF70 NC O NC (OPEN)71 SELINT O Video/Audio select output terminal H : NORMAL, L : Interrupt72 ASEL0 O Audio signal output select control terminal 1 00 : STER