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Kenwood KMD-671R manual

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Table of contents for the manual

  • Page 1

    © 2000-1 PRINTED IN JAPAN B51-7580-00(S) 2209 SERVICE MANUAL MD RECEIVER KMD-671R ● This service manual does not include information on the MD mechanism assembly (explodedview, parts list, schematic diagram or mechanism description). For such information, refer to the MD mechanism assembly manual (X92-3390-00,0-01,X92-3560-00, X92-3580-00:B51-74[...]

  • Page 2

    BLOCK DIAGRAM KMD-671R 2 A8V SW5V UP BACK and E-VOL MPX CH MD AM FM VDD QUAL LEVEL MP IN IC2 Q21,22 MUTE MUTE DRIVER Q19,20 IC8, Q23 200mV 170mV 1200mV 1200mV BUFF Q29 FM+B AM+B Q27,28 TUN5V A UDIO OUT VDD 5V IF1/IF2/PLL+B AM+B FM+B S-METER SD ANT S 5.0V A8V BU5V LOAD LOE SW LOS SW MD EJECT M STOP M RST M MUTE M D ATA M CLK BU5V R CLK R D ATA QUAL [...]

  • Page 3

    KMD-671R 3 COMPONENT DESCRIPTION ● SWITCH UNIT(X13-9702-71) Ref.No. Component Name Application/Function Operation/Condition/Compatibility IC1 LC75808W LCD driver with key-matrix IC2 RS-171 Remote control light sensor Q1 DTA114EKorUN2111 Key-matrix permission SW Ready on key-matrix, ON when the base goes “Lo”. Q2 2SD2114K Illumination SW(Red) [...]

  • Page 4

    KMD-671R 4 MICROCOMPUTER'S DESCRIPTION ● Terminal Description Pin No. Pin Name I/O Description Processing Operation 1 TYPE 0 I Destination type input terminal 0 Pull up to BU 5V lines 2 TYPE 1 I Destination type input terminal 1 Pull down to GND 3 N.C. O Not used 4 N.C. O Not used 5 N.C. O Not used 6 N.C. O Not used 7 N.C. O Not used 8 N.C. [...]

  • Page 5

    Pin No. Pin Name I/O Description Processing Operation 50 N.C. O Not used 51 AVDD - VDD connection terminal Connected to BU 5V lines 52 AVREF 0 - VDD connection terminal(A/D converter reference Connected to BU 5V lines voltage input) 53 PHONE I PHONE detection input 1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE 54 N.C. I Not used Connected to GND[...]

  • Page 6

    Pin No. Pin Name I/O Description Processing Operation 50 N.C. O Not used 51 AVDD - VDD connection terminal Connected to BU 5V lines 52 AVREF 0 - VDD connection terminal(A/D converter reference Connected to BU 5V lines voltage input) 53 PHONE I PHONE detection input 1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE 54 N.C. I Not used Connected to GND[...]

  • Page 7

    ELECTRIC UNIT PC BOARD (Component Side V iew) A B C D E F G I H 1 2 3 4 5 6 7 SWITCH UNIT Refer to the schematic diagram for the values of resistors and capacitors. 7 8 C89 C88 R126 R125 R124 R123 R122 R121 R120 R119 R118 C83 C61 C77 C70 R150 R151 R152 C39 R146 C38 R147 C41 R93 C40 C60 C59 C74 R32 R143 R141 C71 C75 C73 C72 W8 R106 R108 R101 R129 R1[...]

  • Page 8

    Refer to the schematic diagram for the values of resistors and capacitors. 9 10 J K L M N O P R Q 1 2 3 4 5 6 7 SWITCH UNIT ELECTRIC UNIT PC BOARD (Foil Side V iew) R18 R25 C8 R13 BE E B C4 C10 C5 R19 R28 B R17 E R10 CP1 25 R12 C3 R14 26 51 50 R20 CP2 1 R16 R15 C2 R3 100 BE 75 76 R21 R6 R29 C1 R5 R4 R2 R1 R11 R8 R7 R9 C7 C6 14 15 2 1 C9 R22 R24 Q2 [...]

  • Page 9

    A B C D E F G I H 1 2 3 4 5 6 7 J1 D12 D13 Q18 Q17 DETECTION ACC DETECTION D6 D11 D10 D9 Q13 Q14 Q15 P-CON SW PRO TECTION Q16 P-CON SW D3 D1 D2 Q5 Q3 Q4 Q1 Q2 B.UP 5V Q9 Q8 ILLUMI AV R B.UP D7 Q19 AV R (X25-845X-XX) 1 DC CONNECTOR RESET IC Q6 Q7 D4 AV R Q10 SW5V MUTE DRIVER IC1 : UPD784216GF520 IC2 : TDA7400D IC3 : M5237ML IC4 : TDA7386 IC6 : LM259[...]

  • Page 10

    J K L M N O P R Q 1 2 3 4 5 6 7 CN1 J4 E-VOL & NC MPX POWER IC Q25 Q26 FM +B WH1 A1 J3 ANT IN SW SVR SW Q29 COMPOSITE OUT BUFFER Q22 Q21 Q28 Q27 T o MD MECHANISM Q24 D25 D34 D35 D37 D36 D33 D32 D30 D31 Q23 D19 3 2/2 X13- J1 SW AM +B DET . P ANEL A UDIO FLA T CABLE (E39-0338-05) D23 D22 D20 D21 D15 D41 D44 D46 D45 D18 D17 D16 D24 Q31 Q32 Q30 D50[...]

  • Page 11

    S T U V W X Y AA Z 1 2 3 4 5 6 7 CA UTION: F or continued saf ety , replace safety critical components only with manuf acturer’ s recommended par ts (ref er to, parts list). Indicates safety critical components . T o reduce the risk of electr ic shoc k, leakage- current or resistance measurements shall be carr ied out (e xposed parts are acceptab[...]

  • Page 12

    KMD-671R 17 A B 1 2 3 EXPLODED VIEW (UNIT) P ar ts with exploded numbers larger than 700 are not suppied.[...]

  • Page 13

    KMD-671R P ARTS LIST 18 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No. are not supplied. Les ar ticles non mentionnes dans le P ar ts No . ne sont pas f our nis. T eile ohane Parts No. werden nicht geliefer t. E1: Europe M1: Othe[...]

  • Page 14

    KMD-671R P ARTS LIST 19 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No . are not supplied. Les ar ticles non mentionnes dans le P ar ts No . ne sont pas fournis. T eile ohane P ar ts No . werden nicht gelief er t. E1: Europe M1: O[...]

  • Page 15

    KMD-671R P ARTS LIST 20 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No. are not supplied. Les ar ticles non mentionnes dans le P ar ts No . ne sont pas f our nis. T eile ohane Parts No. werden nicht geliefer t. E1: Europe M1: Othe[...]

  • Page 16

    KMD-671R P ARTS LIST 21 Ref.No. Parts No. Description A d d A d d N e w Dest inati on Ref.No. Parts No. Description A d d A d d N e w Dest inati on ∗ New P ar ts P ar ts without P ar ts No . are not supplied. Les ar ticles non mentionnes dans le P ar ts No . ne sont pas fournis. T eile ohane P ar ts No . werden nicht gelief er t. E1: Europe M1: O[...]

  • Page 17

    KMD-671R 22 KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. SPECIFICA TIONS KENWOOD ELECTRONICS IT ALIA S.p.A. Via G. Sirtori 7/9, 20129 Milano, Italy KENWOOD IBÉRICA S.A. Bolivia, 239-08020 Barcelona, Spain KENWOOD ELECTRONICS AUSTRALIA PTY . L TD. (A.C.N. 001 499 0[...]