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Kenwood KDC-C521FM Service Manual
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Kenwood KDC-C521FM Service Manual

Kenwood KDC-C521FM Service Manual

Cd auto changer
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Download this manual See also: Instruction Manual
CD AUTO CHANGER
KDC-C471FM
QQ
3 7 63 1515 0
KDC-C521FM
SERVICE MANUAL
When transporting these models, always attach CAUTION CARD and STEPPED SCREW (for transportation).
KDC-C521FM
KDC-C471FM
TE
L 13942296513
Holder assy
Tray
(J19-5146-02) : KDC-C521FM
(J99-0614-01)
(J19-5149-02) : KDC-C471FM
Control unit
(Display unit)
www
Unit holder
(J19-7009-08)
.
Cord with plug (5m)
(E30-4711-05)
x
ao
u163
y
Velcro
i
(W01-1633-08)
2 9
8
COMPACT DISC AUTO CHANGER
NEW ANTI VIBRATION MECHANISM
COMPACT
CD-R/RW
DIGITAL AUDIO
Q Q
COMPACT DISC AUTO CHANGER KDC-C471FM
3
6 7
1 3
1 5
NEW ANTI VIBRATION MECHANISM
COMPACT
CD-R/RW
DIGITAL AUDIO
Bracket
(J19-5018-03) : KDC-C521FM
(J19-5020-03) : KDC-C471FM
RF Modulator
Remote controller assy
(A70-2051-05) (RC-535) : KDC-C521FM
(A70-2052-05) (RC-525) : KDC-C471FM
co
Screw
Antenna adaptor
.
(N99-1755-08) x2
(T90-0512-05)
(E type only)
9 4
2 8
© 2004-3 PRINTED IN JAPAN
B53-0152-00 ( N ) 2703
KDC-C521FM
1BIT
4D/A CONVER
10
DISC
0 5
8
2 9
9 4
2 8
1BIT 4D/A CONVERTER
6
DISC
Screw set
(N99-1645-15)
Bracket
(J19-5019-03) : KDC-C521FM
(J19-5021-03) : KDC-C471FM
Size AAA battery
(Not supplied)
m
Except KDC-C471FM (K type)
Antenna adaptor
(T90-0521-05)
(E type only)
9 9
9 9

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Summary of Contents for Kenwood KDC-C521FM

  • Page 1 (J19-5020-03) : KDC-C471FM Bracket (J19-5019-03) : KDC-C521FM (J19-5021-03) : KDC-C471FM Control unit RF Modulator Remote controller assy (Display unit) (A70-2051-05) (RC-535) : KDC-C521FM (A70-2052-05) (RC-525) : KDC-C471FM Size AAA battery (Not supplied) Except KDC-C471FM (K type) Unit holder u163 (J19-7009-08)
  • Page 2 3 7 6 3 1 5 1 5 0 L 1 3 9 4 2 2 9 6 5 1 3 u 1 6 3...
  • Page 3 3 7 6 3 1 5 1 5 0 L 1 3 9 4 2 2 9 6 5 1 3 u 1 6 3...

  • Page 4: Components Description

    KDC-C471FM/C521FM COMPONENTS DESCRIPTION 3 7 63 1515 0 CD PLAYER UNIT (X32-5470-01) Ref. No. Application / Function Operation / Condition / Compatibility RF amplifier built in digital servo and data processor IC. Focusing, tracking, sled and spindle servo processing. Detection of dropout, anti-shock, track crossing and off-track conditions.
  • Page 5 KDC-C471FM/C521FM COMPONENTS DESCRIPTION 3 7 63 1515 0 Ref. No. Application / Function Operation / Condition / Compatibility While BACKUP is applied, AVR outputs +5V. Q21,22 BU 5V AVR Q21 and Q22 are inverted Darlington connection. When an eccentric disc is detected, Q30 is turned on, and a preceding beam is made to Eccentric disc SW be delayed.

  • Page 6: Microcomputer's Terminal Description

    KDC-C471FM/C521FM MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 MECHANISM MICROCOMPUTER : 784214AGC-165 (X32 : IC7) Pin No. Pin Name Description Processing Operation NOR/RW CD-DA/CD-RW Switching Not used (N.C.) TSTB CD-TEXT parameter strobe P-CON P-CON output Not used (N.C.) Focus OK input “Hi”...
  • Page 7 KDC-C471FM/C521FM MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 Pin No. Pin Name Description Processing Operation DATAH Data input from H/U DATAC Data output from the changer HCLK Communication clock input/output with H/U RECQC Communication request to H/U “Lo” : Communication requested CHMUTE Audio mute request to H/U “Lo”...
  • Page 8 KDC-C471FM/C521FM MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 SYSTEM MICROCOMPUTER : LC72366-9B63 (FM MODULATOR UNIT : IC501) Pin No. Pin Name Terminal name Description Operation in HOLD X IN X_tal TEST2 Ground connection terminal PG3~1 Not used (pull down to GND lines.) Connected to GND lines.
  • Page 9 KDC-C471FM/C521FM ADJUSTMENT 3 7 63 1515 0 L.P.S. initial position adjustment procedure 1. Connect the changer to the HEAD UNIT (H/U). 2. While holding the magazine eject button of the changer, press the reset button of the H/U. 3. After about 3 seconds, release the magazine eject button. 4.

  • Page 10: Pc Board (Component Side View)

    KDC-C471FM/C521FM PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5470-01 (J74-1527-01) SGND VREF LOESW LIMSW PCON IOP+ LCH RCH FCLK REQH BU14 Rch Lch IOP- CHRST AMUTE FDTO CHCON R102 R152 SA5V DAGND FDTI COMMSW TSCK R139 /CE1...
  • Page 11 KDC-C471FM/C521FM PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 CD PLAYER UNIT X32-5470-01 (J74-1527-01) R161 R120 C192 R101 R190 R191 R107 C300 R144 R108 C301 R147 C205 R111 R110 C204 C203 C201 L.P.S C200 R143 R125 R141 L 13942296513 CP17 R135 R153...
  • Page 12 KDC-C471FM/C521FM PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 FM MODULATOR UNIT C317 C551 R551 STK402 R502 R503 R202 Q501 C202 R203 C205 C105 STK401 R102 C102 R103 R531 R104 C506 R552 D201 D101 C552 R501 R536 C519 C104 C504 C520...
  • Page 13 KDC-C471FM/C521FM PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 FM MODULATOR UNIT L 13942296513 u163...
  • Page 14 KDC-C471FM/C521FM PC BOARD (COMPONENT SIDE VIEW) (FOIL SIDE VIEW) 3 7 63 1515 0 CONTROL UNIT CONTROL UNIT D701 D708 C701 R701 R729 D717 R730 D718 R731 D719 R733 D721 R732 R727 R726 D720 R711 R712 R713 R714 R715 R719 Q702 L 13942296513 R720...
  • Page 15 KDC-C471FM/C521FM PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 SUB-CIRCUIT UNIT X13-9840-00 (J74-1100-02) (FOIL SIDE VIEW) SUB-CIRCUIT UNIT X13-9840-00 (J74-1100-02) L 13942296513 (COMPONENT SIDE VIEW) SUB-CIRCUIT UNIT X16-1010-00 (J74-1153-01) BLACK LIMSW u163 Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 16 KDC-C471FM/C521FM 3 7 63 1515 0 CD PLAYER UNIT (X32-5470-0x) 72 (X92-) AVREF0 SUB-CIRCUIT UNIT (X13-9840-00) 14.4V REQH BU+14V BU14V CH-CON BU+14V CH MUTE CH-RST A GND Q6,7 CH RST R-ch A. MUTE R ch A-GND 10u16 L-ch REQC DATAC R100 DATAH CH-CON...
  • Page 17 KDC-C471FM/C521FM 3 7 63 1515 0 MGSW R129 RESET RESET IC NO SW EJSW CHRST 5.0V OUT 1 5.0V ARMSW RESET CH CON CHCON 12.5MHz EEP ROM R155 5.0V BUDET R156 5.0V TEST R153 1.3V 4.7K 5.0V R154 1.2V 4.7K 5.0V 100P LOESW...
  • Page 18 KDC-C471FM/C521FM 3 7 63 1515 0 R11 10K R12 10K R13 10K R14 10K C300 16.93MHz 22u6.3 C301 5.0V 5.0V A.VDD 5.0V C206 2.5V EMPH FLAG 100K 4.0V 10u10 DOUT SCKIN SCKO 2.5V A.GND LRCKIN LRCK HOLD 2.5V C16M/SBSY LOESW 3.6V 2.5V LOESW...
  • Page 19 NAME KDC-C520(J) X92-4760-00 X32-5470-00 KDC-C520FM(J) X92-4760-01 X32-5470-01 2SC4081 KDC-C719(K,M,E) ELEVATOR X92-4760-00 X32-5470-00 KDC-C719Y(E2) KDC-C519FM(K,M) X92-4760-01 X32-5470-01 KDC-C521FM(K,M) KDC-C669(K,M,E) X92-4770-00 X32-5470-00 KDC-C669Y(E2) KDC-C469(J,K,E) X92-4770-02 KDC-C469Y(E2) X32-5470-01 KDC-C469FM(K,E) KDC-C469FMA(E) X92-4770-01 KDC-C471FM(K,E) SIGNAL LINE GND LINE CAUTION : For continued safety, replace safety B LINE critical components only with manufacturer’s recom-...
  • Page 20 KDC-C471FM/C521FM 3 7 63 1515 0 FM MODULATOR UNIT C317 7.7V 7.7V IC301 220u10 R110 FM ST C109 R120 D101 L.P.F. 0.015 MODULATOR IC101 C112 R115 C120 IC103 ∗ 5.4V IC102 R102 (1/2) 22u25 2.2K C114 47u50 C103 R105 3.8V (1/2) 1.5K (1/2)
  • Page 21 RADIO Q609 L 13942296513 CAR ANT PN302 7.7V 8V AVR C114, DESTNATION 13.5V Q606 Q605 KCA-R71FM 680P R612 KDC-C521FM KDC-C471FM Q604 4.7K KCA-R71FM REMOCON KDC-C521FM 1000P MUTE Q607 KDC-C471FM POWER ON RELAY ON CAUTION : For continued R604 safety, replace safety criti-...
  • Page 22 KDS122 Q701 KTC3875S L 13942296513 Q702 KRA303 Q703 : KRA305 IC701 LC75808W IC702 NJL67H380A R705- D704- DESTNATION R704 KCA-R71FM B30-1690-05 KDC-C521FM KCA-R71FM 5.9V KDC-C521FM B30-1567-05 KDC-C471FM Q703 Q702 KEYON 2.7K REMO. GND LINE SENSOR R751 D722 B LINE ILLUMI Q701...
  • Page 23 KDC-C471FM/C521FM 3 7 63 1515 0 5.9V L 13942296513 DISP R711 SW714 SW713 SW724 R712 VOL+ R713 SW734 SW733 SW731 EJECT R714 IC701 SW744 SW743 SW742 SW741 LCD DRIVER VOL- R715 SW754 SW753 SW752 SW751 ∗ ∗ D715 D716 ∗ R710 ∗...
  • Page 24 KDC-C471FM/C521FM EXPLODED VIEW (KDC-C521FM MECHANISM) 3 7 63 1515 0 φ2x3.5 : N09-4126-05 φ2x2.5(BLK) : N09-4288-05 φ2x5 : N86-2005-46 φ1.7x1.5(BLK) : N09-4189-05 φ2x6 : N09-4154-05 M1.7x3 : N09-4181-05 M1.7x2.2 : N39-1722-46 φ2x3.5 : N09-6108-05 φ3.8 WASHER : N19-2105-14 φ4 WASHER : N19-2058-04 φ3.8...
  • Page 25 KDC-C471FM/C521FM EXPLODED VIEW (KDC-C471FM MECHANISM) 3 7 63 1515 0 φ2x3.5 : N09-4126-05 φ2x2.5(BLK) : N09-4288-05 φ2x5 : N86-2005-46 φ1.7x1.5(BLK) : N09-4189-05 φ2x6 : N09-4154-05 M1.7x3 : N09-4181-05 M1.7x2.2 : N39-1722-46 φ2x3.5 : N09-6108-05 φ3.8 WASHER : N19-2105-14 φ4 WASHER : N19-2058-04 φ3.8 WASHER...

  • Page 26: Exploded View (Unit)

    KDC-C471FM/C521FM EXPLODED VIEW (UNIT) 3 7 63 1515 0 BLACK M4x17.3 N09-4383-05 φ2x4 N89-2004-46 φ2.6x6 (BLK) N89-2606-45 L 13942296513 SILVER (X13-9840-00) u163 Parts with the exploded numbers larger than 700 are not supplied.
  • Page 27 KDC-C471FM/C521FM EXPLODED VIEW (FM MODULATOR, CONTROL UNIT) 3 7 63 1515 0 SIZE AAA BATTERY (NOT SUPPLIED) (E type only) (E type only) (Please cut a tip) L 13942296513 LCD1 CONTROL u163 M3x6 (BLK) : N30-3006-45 CN701 φ2x5 (BLK) : N82-2005-45 φ2x8 (BLK) : N82-2008-43 φ2.6x6 (BLK)

  • Page 28: Parts List

    0.10UF H54-3146-04 ITEM CARTON CASE C92-1392-05 ELECTRO 100UF 10WV CK73EB1A475K CHIP C 4.7UF E1 : KDC-C471FM K : KDC-C471FM K1 : KDC-C521FM M1 : KDC-C521FM Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 29 J 1/10W DAP202U DIODE RK73GB2A332J CHIP R 3.3K J 1/10W D21,22 DAN202K DIODE E1 : KDC-C471FM K : KDC-C471FM K1 : KDC-C521FM M1 : KDC-C521FM Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 30 DTC124EUA DIGITAL TRANSISTOR G02-1374-04 FLAT SPRING K1M1 NTH5G20B333K07 THERMISTOR G02-1375-03 FLAT SPRING K1M1 G02-1376-03 FLAT SPRING K1M1 CD-CH MECHANISM ASSY (X92-4760-01) for KDC-C521FM G02-1378-14 FLAT SPRING K1M1 A10-4745-13 CHASSIS ASSY K1M1 A10-4748-02 CHASSIS CALKING ASSY K1M1 G02-1380-04 FLAT SPRING K1M1...
  • Page 31 3 7 63 1515 0 New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. CD-CH MECHANISM ASSY (X92-4760-01) for KDC-C521FM Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref.
  • Page 32 15PF R107,108 RK73GB2A103J CHIP R J 1/10W C306 CK73GB1E333K CHIP C 0.033UF K E1 : KDC-C471FM K : KDC-C471FM K1 : KDC-C521FM M1 : KDC-C521FM Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 33 ZENER DIODE R512 RK73FB2B102J CHIP R 1.0K J 1/8W ZD603 KDZ8.2EV ZENER DIODE E1 : KDC-C471FM K : KDC-C471FM K1 : KDC-C521FM M1 : KDC-C521FM Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 34 NJL67H380A ANALOGUE IC Q701 KTC3875S TRANSISTOR Q702 KRA303 TRANSISTOR Q703 KRA305 TRANSISTOR u163 E1 : KDC-C471FM K : KDC-C471FM K1 : KDC-C521FM M1 : KDC-C521FM Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 35 KDC-C471FM/C521FM PARTS LIST 3 7 63 1515 0 CAPACITORS 2 2 0 • Capacitor value CC45 Color* 010 = 1pF 0 = 22pF 1 = Type ... ceramic, electrolytic, etc. 4 = Voltage rating 100 = 10pF 2 = Shape ... round, square, etc. 5 = Value 101 = 100pF Multiplier...

  • Page 36: Specifications

    Operating Temperature ......................-10~50°C Size (W x H x D) CD changer (KDC-C521FM) ......250 x 80 x 176 mm (9-13/16 x 3-1/8 x 6-13/16 in.) (KDC-C471FM) ......250 x 64 x 176 mm (9-13/16 x 2-1/2 x 6-13/16 in.) Controller ...............