Kenwood KDC-7090R Service Manual Download Page 1

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2001-1 PRINTED IN JAPAN

B51-7714-00(S) 1954

SERVICE MANUAL

CD RECEIVER

KDC-7090R/Y

KDC-7090R

AUD

PWR OFF

CLK

ANG

VOL ADJ

NAME.S

DISP

DAB

COMPACT

TEXT

DIGITAL AUDIO

47Wx4

LOUD

SCAN

RDM

REP

M. RDM

PTY

●

KDC-7090R

Antenna adaptor
(T90-0523-05)
(T90-0534-05)

Plastic cabinet assy
(A02-1497-03)

DC cord
(E30-4942-05)

Lever
(D10-4562-04)

Remote controller assy
(A70-0886-15)

Mounting hardware assy
(J21-9716-03)

Knob(EJECT)
(K25-1226-03)

Front glass
(B10-3264-01)

Panel assy
(A64-2161-02)

Knob(VOL)
(K25-1222-03)

Knob(1-6)
(K25-1223-03)

Knob(FM/AM)
(K25-1225-03)

Torsion coil spring
(G01-2924-04)

Screw set
(N99-1704-05)

Summary of Contents for KDC-7090R

Page 1: ...DM REP M RDM PTY KDC 7090R Antenna adaptor T90 0523 05 T90 0534 05 Plastic cabinet assy A02 1497 03 DC cord E30 4942 05 Lever D10 4562 04 Remote controller assy A70 0886 15 Mounting hardware assy J21 9716 03 Knob EJECT K25 1226 03 Front glass B10 3264 01 Panel assy A64 2161 02 Knob VOL K25 1222 03 Knob 1 6 K25 1223 03 Knob FM AM K25 1225 03 Torsion coil spring G01 2924 04 Screw set N99 1704 05 ...

Page 2: ...4V E VOL PREOUT PRE OUT LEVEL ATT CD MECHA CD MD CH FM AM CH S METER QUAL SERVO B MO SW STOP MUTE SW2 LO EJ RST SW3 SW1 SDA SCL A8V BU5V SW5V RST REQ C CLK CH CON DATA H REQ H CD AM FM MUTE PRE MUTE RESET DIMMER KEY REQ L DATAS L CE L DATAL L CLK PANEL REMO SRM SW2 SRM SW3 SRM DET SRM SW1 RDCK RDDA QUAL SDA SCL AFS AFS S METER A8V PLL CLK PLL DATA S METER SW5V DATA C BACK UP 3795mV 3795mV 2005mV 1...

Page 3: ...TBY terminal Power IC ON H Power IC OFF L During All OFF H 21 MUTE O MUTE termianl ON Open OFF L 22 N C O Open not used 23 N C O Open not used 24 ACC DET I ACC detection terminal L ACC H No ACC 25 DIMMER I Small detection terminal ON L OFF H 26 SW5V O 5 volt power terminal ON L OFF H 27 EXT AMP CO O External AMP control terminal 200ms L 40ms Bus boost OFF L 70ms Bus boost LOW L 100ms Bus boost HI ...

Page 4: ...on terminal Tel mute Min 1 volt Navi mute Max 2 5 volt 75 SRM SW3 I Mask mechanism position detection input See 01mask mechanical position detection chart 76 SRM SW1 I Mask mechanism position detection input See 01mask mechanical position detection chart 77 SRM SW2 I Mask mechanism position detection input See 01mask mechanical position detection chart 78 SRM DET I Mask mechanism detection input L...

Page 5: ...r is settable in 3 steps of Rear MAX CENTER Front MAX with the Track up down keys HPF is settable in 2 steps of THRU 220Hz with the Track up down keys LPF is settable in 2 steps of THRU 120Hz with the Track up down keys Bass f Bass Q Bass EXT Middle f Middle Q Treble f do not appear in the audio alignment 8 Menu items Momentarily pressing the CLK key calls up the Menu mode The DNPP SBF keys on the...

Page 6: ... controller 2 key once and press the Track Up key Enters an A Press the remote controller 7 key twice and press the Track Up key Enters an R 3 Security function is canceled and unit sets to All Off mode 4 Code request mode appears if a mistake was made in entering the numbers Mask key write method on initialized EEPROM 1 While holding the FM key and the preset 6 key reset the unit 2 Press the CLK ...

Page 7: ... 5 D 3 6 D 3 1 B 4 2 D 4 3 D 3 4 C 4 5 D 4 O N f e R s s e r d d A C I Q 1 H 4 2 G 4 4 F 2 5 F 3 6 F 3 1 H 4 2 F 4 3 F 3 4 G 4 5 F 4 PC BOARD Foil Side View CD PLAYER UNIT CD PLAYER UNIT CD PLAYER UNIT X32 5030 00 CD PLAYER UNIT X32 5030 00 Refer to the schematic diagram for the values of resistors and capacitors C85 R45 R44 C51 C34 C41 CP1 R117 X1 R121 C72 C77 R125 R104 C78 R122 R118 R126 R102 R1...

Page 8: ... D25 Q29 C124 C125 R7 C126 C127 C123 C122 C121 R202 C128 R82 R90 R89 R69 R66 R75 R50 R72 C116 R204 R231 R230 R216 R215 R214 R111 R109 R100 R102 R205 R207 R206 R115 R208 R116 R119 C21 R10 W7 C149 C141 R4 R3 X2 CP3 CP6 CP5 CP2 X1 R218 R217 R61 R60 R62 R59 R83 R84 R118 R117 CP1 CP4 R49 L R VT 5V RESET IFCOUT S MTR W100 L10 FL RL FL RL FR RR R46 R40 R45 R38 R34 R35 X3 C3 C1 C115 C96 C95 C93 C94 C5 C63...

Page 9: ...Q11 Q12 L10 VT L9 R212 R210 L7 1 C134 L12 7 6 2 24 1 R218 R217 E B X3 C125 W31 C126 24 25 C127 W30 C128 2 1 C121 C1 R33 L1 16 1 9 8 C94 C93 C96 FR FL 6 RL RR 1 C95 CP4 CP6 C120 R204 C116 1 3 W36 R202 E B B R208 R206 R207 R205 W34 W35 W33 C115 L C114 B E B E C67 C69 E L11 C68 C119 RL FL C117 FR C118 14 15 C122 C123 C124 W25 C113 W27 W26 W24 W18 W19 W20 W22 W23 W21 RR W29 W28 C22 L6 R14 B C21 E 28 C...

Page 10: ...21 0 047 C122 0 047 C124 20 52 0 047 0 047 C128 C126 0 047 C127 0 047 C125 10K R200 4 7uH L4 C200 W32 R10 2 2 L CE L CLK L DATA L L DATAS NC DIMMER 1K R238 17 R240 1K 10 100 21 FL FR RL RR R165 R166 R168 R167 C93 C94 C95 C96 11 13 79 4 7K R159 4 7uH L6 X86 3242 70 X86 3342 71 X86 3342 71 YES YES NO NO C161 IC1 UPD703033GC052 UPD703033GC053 UPD703033GC052 UPD703033GC053 YES NO YES NO R51 YES NO NO ...

Page 11: ...94 R82 1K R96 100K R93 100K R88 100K R79 2 2K C46 1000P R77 2 2K R75 1K R76 100K R74 2 2K R73 2 2K R85 R72 1K 2 2K R69 2 2K R71 1M R117 1K R118 1K 31 64 65 57 60 58 61 63 53 54 90 91 AFS 1 2 SRM SW1 SRM SUB 7 6 C147 0 22 C148 75 76 76 77 75 79 78 86 88 87 83 82 81 80 92 2 2K R214 R216 2 2K R215 2 2K 4 7uH L11 0 01 C135 1000P C139 47K R243 83 13 11 10K 31 1K R217 4 7K R218 80 UNIT MODEL KDC V7090R ...

Page 12: ...40 37 38 36 31 33 34 32 29 30 28 26 27 25 22 24 23 21 19 20 68 C4 C2 C3 C1 S44 S50 S48 S49 S46 S47 S45 S36 S40 S42 S43 S41 S38 S39 S37 S35 S33 S34 S31 S32 S29 S30 S21 S25 S27 S28 S26 S23 S24 S22 S19 S20 S18 S16 S17 S14 S15 S6 S10 S12 S13 S11 S8 S9 S7 S2 S4 S5 S3 S1 S52 S53 S54 S55 S56 S57 S58 S60 S59 C8 C7 C6 C5 KS5 9 1K R6 2 2K 2 2K 2 2K R2 2 2K 9 C6 2 2 R7 22K A IC1 IC2 ED1 X13 9992 70 KDC 7090R...

Page 13: ...BDO C BDO 3TOUT C EA ARF C AGC RFIN RFOUT RFN VCC LD PD 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VREF VDET TEBPF TEOUT TEN FEN FEOUT GCTL TBAL F E C A D B FBAL 1 3 2 3300P 6800P 19 0 033 C10 4700P 1000P C23 ARF C8 1 10K R10 10K R11 9 1K R12 15P C5 2P C6 RF 0 1 C7 R15 820K 43K C16 150P R17 3 9K R18 TE 22K R16 4700P C14 0 047 C15 C17 4700P 12 51K R19 220P C18 92 C19 0 1 R20 100K 10 11 R21 240...

Page 14: ... F F J C J Q Q Q B B B B B B D L L E K J1 237 235 236 302 251 238 239 214 212 264 211 210 232 254 225 240 242 230 250 202 213 253 263 243 B B 303 FC1 ME1 DN1 F1 771 770 784 772 701 P P M M P P P P 222 P P P R 802 801 S S S S WH1 IC4 226 269 277 252 782 221 799 722 257 301 304 267 304 223 228 PA1 220 271 272 245 751 273 270 276 274 275 224 N N N N M2 5x2 M2x2 BLK φ2x4 M2x2 5 M2x1 8 BLK FLAT WASHER ...

Page 15: ...49 1C G01 2924 04 TORSION COIL SPRING 250 2C G01 3065 04 EXTENSION SPRING 251 3C G01 3066 04 TORSION COIL SPRING 252 3D G01 3069 04 EXTENSION SPRING 253 2C G01 3080 04 TORSION COIL SPRING 254 2C G09 2038 04 FORMED WIRE 257 3C G16 1177 04 SHEET H10 4763 02 POLYSTYRENE FOAMED FIXTURE H25 0329 04 PROTECTION BAG 280X450X0 03 H25 0337 04 PROTECTION BAG 180X300X0 03 H25 1108 04 PROTECTION BAG 100X300X0 ...

Page 16: ... 022UF K C22 C90 2608 05 ELECTRO 1 0UF 50WV C34 C90 2598 05 ELECTRO 3 3UF 25WV C35 CK73GB1C683K CHIP C 0 068UF K C36 C90 2602 05 ELECTRO 0 10UF 50WV C37 CK73GB1H102K CHIP C 1000PF K C38 39 CK73GB1H103K CHIP C 0 010UF K C40 CE04CW0J470M ELECTRO 47UF 6 3WV C41 CK73GB1H103K CHIP C 0 010UF K C42 CC73GCH1H220J CHIP C 22PF J C43 CC73GCH1H270J CHIP C 27PF J C44 CK73GB0J105K CHIP C 1 0UF K C45 C90 2608 05...

Page 17: ...J CHIP R 100K J 1 16W R62 RK73GB1J104J CHIP R 100K J 1 16W R66 67 RK73GB1J104J CHIP R 100K J 1 16W R69 RK73GB1J222J CHIP R 2 2K J 1 16W R72 RK73GB1J102J CHIP R 1 0K J 1 16W R73 74 RK73GB1J222J CHIP R 2 2K J 1 16W R75 RK73GB1J102J CHIP R 1 0K J 1 16W R76 RK73GB1J104J CHIP R 100K J 1 16W R77 RK73GB1J222J CHIP R 2 2K J 1 16W R79 RK73GB1J222J CHIP R 2 2K J 1 16W R82 RK73GB1J102J CHIP R 1 0K J 1 16W R8...

Page 18: ...Q6 7 DTA124EUA DIGITAL TRANSISTOR Q8 DTC144EUA DIGITAL TRANSISTOR Q9 2SD2375 TRANSISTOR Q10 2SB1184 TRANSISTOR Q11 2SC4081 TRANSISTOR Q12 DTC144EUA DIGITAL TRANSISTOR Q13 DTA124EUA DIGITAL TRANSISTOR Q14 DTA123JK DIGITAL TRANSISTOR Q15 DTC144EUA DIGITAL TRANSISTOR Q26 2SB1277 Q R TRANSISTOR Q27 2SA1576A TRANSISTOR Q28 DTA124EUA DIGITAL TRANSISTOR Q29 DTC114YUA DIGITAL TRANSISTOR Q30 31 2SC4081 TRA...

Page 19: ...16W R73 RK73GB1J473J CHIP R 47K J 1 16W R75 RK73GB1J333J CHIP R 33K J 1 16W R76 RK73GB1J622J CHIP R 6 2K J 1 16W R77 RK73GB1J563J CHIP R 56K J 1 16W R78 RK73GB1J243J CHIP R 24K J 1 16W R81 RK73GB1J333J CHIP R 33K J 1 16W R82 RK73GB1J123J CHIP R 12K J 1 16W R83 RK73GB1J102J CHIP R 1 0K J 1 16W R101 102 RK73GB1J332J CHIP R 3 3K J 1 16W R103 104 RK73GB1J562J CHIP R 5 6K J 1 16W R107 108 RK73FB2A331J ...

Page 20: ... 2771 04 EXTENSION SPRING 62 3A G01 2772 24 EXTENSION SPRING 63 3A G01 2773 14 EXTENSION SPRING 64 3A G01 2774 34 EXTENSION SPRING 65 1B G01 2775 04 TORSION COIL SPRING 66 1B G01 2776 14 TORSION COIL SPRING 67 3B G01 2777 24 TORSION COIL SPRING 69 2A G01 2844 04 EXTENSION SPRING 70 2A G02 1231 04 FLAT SPRING 71 2B G02 1232 24 FLAT SPRING 72 2A G02 1241 24 FLAT SPRING 75 2A J11 0613 13 CLAMPER 76 3...

Page 21: ... 0 80 800 8000 K 35 V EX C C 7 3 F S L 1 H 0 0 0 J Refer to the table above 1 Type 2 Shape 5 Voltage rating 4 Temp coefficient 3 Dimension 6 Value 7 Tolerance 7 6 5 4 3 2 1 EX C K 7 3 F F 1 H 0 0 0 Z 7 6 5 4 3 2 1 Chip CH RH UJ SL Chip B F Chip resistor Carbon EX R K 7 3 E B 2 B 0 0 0 J 7 6 5 4 3 2 1 RESISTORS Chip B F Carbon resistor Nomal type EX R D 1 4 B B 2 C 0 0 0 J 7 6 5 4 3 2 1 1 Type 2 Sh...

Page 22: ...er D A 8 Times Over Sampling D A Converter 1Bit Spindle Speed 500 200 CLV Wow Flutter Below Measurable Limit Frequency Response 10 20kHz 1dB Total Harmonic Distortion 0 01 1kHz S N Ratio 105dB 1kHz Dynamic Range 93dB Channel Separation 85dB AMPLIFIER Section Preout Level Load 1800mV 10kΩ CD CD CH Preout Impedance 600Ω Maximum Power 47W 4 Power Output 29W 4 DIN45324 B 14 4V TONE Section Bass 100Hz ...

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