Kenwood KDC-8021 Service Manual Download Page 14

Page: 14 / 27

Refer to the schematic diagram for the value of resistors and capacitors.

PC BOARD

(

Foil side view

)

X16-1600-10/1612-70 (J74-1311-12)

R63

R60

C26

C27

CP10

R61

R62

CP1

CP2

CP8

CP9

CP3

C15

C19

C16

C18

R22

R23

R20

R24

R16

R19

R17

R14

C14

C11

C12

C17

C23

C22

CP7

OPEN

CP4

CP6

R22

R10

R18

R11

R12

R13

C23

C9
C10

R34

R33

R35

C20

C21

100

DATA I/O

GND

VOL B

VOL

SRC

KS1(CLK)

KS2(DO)

KR2

FL+B

OPEN

D GND

TEST

+3.3V

MC CLK

RST

MC REQ

FAC

SC REQ

RST

VDD

ANA

KR3

KR1

S.GND

KS3(DI)

KS4

D10

IC2

IC1

IC4

D10

D12

D14

IC5

S14

R12

R10

R11

R31

R45

C19

R179

R180

R187

R174

R175

R176

R181

R182

TH1

R188

R185

R186

R29

R169

R170

R173

R167

R168

C107

C109

C108

R217

R218

R216

R214

R193

R194

R192

C48

R191

R211

R134

R243

R242

R248

R246

R247

R244

R245

R220

R90

R91

R87

R101

R107

R106

R102

R103

R100

R95

R94

R93

R96

R99

R98

R97

R85

R61

R62

R56

R57

R63

R64

C104

R55

C103

R79

R83
R84

R70

R69

C85

R189

C87

C86

R190

R172

R177

R171

R184

C88

R178

R183

R230

R240

R241

R231

R232

R204

R226

R121

R120

R143

R140

111

R114

R115

C72

C74

C106

C105

C102

C101

R146

R147

R144

R145

R151

R148

C129

C49

C123

C128

C124

C122

C121

C46

C30

C31

C35

C41

C17

C45

C15

C125

C43

C120

C71

R156

R26

R23

R24

R25

C73

R34

R155

C130

C54

C61

R20

R21

R22

R18

R19

R13

C20

R133

R132

R131

R130

W100

C131

R66
R65

R58

R59

R60

R126

C154

C152

C150

C151

C57

R118

C153

R48
R49

R233

C119

4 3

D39

D42

D36

D37

D35

D38

D13

D41

D40

D52

D56

D27

D50

D30

D29

D55

D54

D51

D53

Q36

Q35

Q37

Q34

Q33

Q45

Q49

Q47

Q14

Q17

Q10

Q18

Q26

Q27

Q20

Q19

Q22

Q21

D49

D22

D21

IC8

D10

D25

D24

D23

Q50

D12

D43

D44

IC16

D60 D61

X25-9170-10/9182-70 (J74-1309-12)

X25-9170-10/918

Ref. No.

IC8

IC16

Q10

Q14

Q17

Q18

Q19

Q20

Q21

Q22

Q26

Q27

Q33

Q34

Q35

Q36

Q37

Q45

Q47

Q49

Q50

Address

X16-1600-10/1612-70

Ref. No. Address

IC1

IC2

IC4

Summary of Contents for KDC-8021

Page 1: ...INTED IN KOREA B51 7901 00 K 3169 The CD mechanism information is not in this service manual Please refer to service manual KDC M9021 X859 X92 4460 0x B51 7891 00 KDC 8021 X92 4450 01 B51 7889 00 Panel assy A64 2567 02 KDC X859 Panel assy A64 2588 02 Panel assy A64 2587 02 KDC M9021 KDC 8021 Escutcheon assy B07 3007 03 Escutcheon assy B07 3007 03 Escutcheon assy B07 3007 03 DC cord E30 4939 05 DC ...

Page 2: ... TYPE X16 158 X16 159 AUDIO S METER IFC OUT PLL DATA PLL CLK SW5V FM AM CD CHANGER S METER QUAL SDA SCK S MUTE A 8V MASK SW1 RCLK QUAL RDATA NOISE S METER AFS IFC OUT PLL DATA PLL CLK SW1 M RST LO EJ MO SW MUTE R MUTE L M STOP SW3 DATA C CH RST CH MUTE SW2 DATA H CH CON CH CLK REQ H REQ C MASK DET RESET AM B FM B SCK SDA PRE MUTE MUTE BEEP P MUTE ACC DET PHONE DIMMER EXT AMP CONT P CON PAN5V P ON ...

Page 3: ... SW Q24 turns ON when the base of Q23 is H Q25 28 POWER CONT SW Q25 turns ON when the base of Q28 is H Upon detection of drop in the output voltage these transistors turn Q26 27 POWER CONT circuit output protection Q25 OFF to protect the output This prevents malfunction of Q26 when the POWER CONT SW turns ON Q29 External amp control SW Turns ON when a pulse is input to the base Q30 Dimmer control ...

Page 4: ...ly of IC and UFD Logic which are driver by 3 3V Q1 REMO ON SW The power supply of IC2 and IC3 is turned on when the base level goes L Q2 SC CON SW ON when the base level goes H Q3 4 FL B SW FL B VDD2 is turned on when Q3 s base level goes H Q5 FL BLK SW ON when the base level goes H Q6 7 KEY ILLUMINATION SW Lights green key illumination when Q6 s base level goes H Lights red key illumination when ...

Page 5: ...Display for FL driver Blanking display H Display ON L Display OFF 21 TEST I INTEMALLY CONNECTED 22 33 NC O 34 RESET I RESET 35 XT1 GND 36 XT2 37 REGC Regulator capacitance connection 38 X2 MAIN CLOCK 39 X1 MAIN CLOCK 40 VSS GND 41 VDD PAN 5V 42 47 NC O 48 FL 3 3V O FL 3 3V ON OFF H ON L OFF 49 FL B I O FL B ON OFF H FL B ON Hi Z FL B OFF 50 57 NC O 58 BVDD PAN 5V 59 BVSS GND 60 73 NC O 74 AVDD PAN...

Page 6: ...ring operation H 95 MC REQ I Request from System uCOM H Requested 96 KS4 I O Key scan Hi Z L scan 97 KS3 I O Key scan Hi Z L scan Flash uCOM write port DI 98 KS2 I O Key scan Hi Z L scan Flash uCOM write port DO 99 KS1 I O Key scan Hi Z L scan Flash uCOM write port CLK 100 MC DATA I Data communication with System uCOM PANEL MICROCOMPUTER UPD703032GFA03 X16 ...

Page 7: ...12 BEEP O Beep output terminal L L Since there is no 13 REMO I Wired remote input wired remote control terminal connected to GND 14 N C O Output Open Not used L 15 N C O Output Open Not used L 16 IC2 SDA I O IC2 IC5 and CD mechanism DATA line Hi Z Hi Z 17 IC2 SCL I O IC2 IC5 and CD mechanism CLOCK line Hi Z Hi Z L when M MUTE R is L during CD playback H other sources 18 PRE MUTE R O PREOUT Rch MUT...

Page 8: ... Antenna control terminal RDS H Other sources L L in last FM with RBDS TI ON H 34 RESET I Reset input terminal Normal H Reset L 35 XT1 I Sub clock connection Clock count Working terminal while power is OFF 36 XT2 Sub clock connection terminal Output terminal for 37 REGC capacitor of Reg in uCOM During power ON Oscillating During power 38 X2 Main clock connection OFF and momentary terminal power do...

Page 9: ...H Reset L 60 M RST O Reset output According to the to CD mechanism mechanism control H H specification 61 M STOP O Stop request to CD mechanism STOP L CD H L L 62 N C O Output Open Not used L 63 CD SW3 I CD Down SW detection terminal Chucking H L 64 LO EJ I O CD mechanism Loading Stop braking Hi Z Ejection switching Loading L Ejection H Hi z Hi Z 65 MOSW O CD mechanism motor Loading ejection power...

Page 10: ...eter detection terminal 85 R DATA I RDS decoder DATA Models without RDS and input terminal RBDS Connected to GND 86 R QUAL I RDS decoder OUAL Models without RDS and input terminal RBDS Connected to GND 87 IFC OUT I F E IFC OUT input Station detected 2 5 V terminal or more 88 CH MUTE I Muting request from CH 89 CH REQH O Request output to CH Request L H H 90 R CLK I RDS decoder CLK input Models wit...

Page 11: ...o 9 î No 15 î No 10 î No 11 î No 12 î No 13 î No 14 î and back to No 9 Using the Track down key moves 1 track downwards from the track being played When the total number of MP3 or WMA disc tracks is 9 or less playback starts from the first track With the model equipped with the MP3 or MP3 WMP mechanism the mechanism model name and version number are displayed at the bottom line 7 Audio items Momen...

Page 12: ... in the initial status 1 Enter the test mode See 1 How to enter the test mode 2 Press the 4 8 key to enter the Mask key registration mode TRANSMIT1 should be displayed now The display at this time should show in place of Security items 3 Point the Mask key remote toward the light sensor and press and hold its key for more than 0 5 second 4 When TRANSMIT2 is displayed press and hold the key on the ...

Page 13: ...C76 C77 C113 C112 C142 C141 C78 C111 C114 C56 C117 C118 C55 C64 C115 C62 C63 C100 C39 C127 C126 C23 C33 C32 C36 C34 C5 C29 C140 C94 C44 C89 C92 C93 C91 C90 C116 C22 C3 C24 C6 C16 C21 C60 C10 C11 C9 C18 C8 C81 C82 C66 C68 C67 C65 L3 L1 R46 R27 C80 C79 C84 C83 C12 C13 C200 L4 J1 L1 TEST RST 5V E B E B E B E B E B B B E E 13 1 2 12 1 7 6 2 24 1 2 9 10 6 7 5 1 13 2 3 4 8 12 11 24 25 1 1 1 1 8 16 9 10 ...

Page 14: ...1 R211 R134 R243 R242 R248 R246 R247 R244 R245 R220 R90 R91 R87 R101 R107 R106 R102 R103 R100 R95 R94 R93 R96 R99 R98 R97 R85 R61 R62 R56 R57 R63 R64 C104 R55 C103 R79 R83 R84 R70 R69 C85 R189 C87 C86 R190 R172 R177 R171 R184 C88 R178 R183 R230 R240 R241 R231 R232 C2 R204 R226 R121 R120 R119 R143 R140 R111 R117 R116 R114 R115 C72 C74 C106 C105 C102 C101 R146 R147 R144 R145 R151 R148 C129 C49 C123 ...

Page 15: ...152 330K R153 330K R151 4 7K TAPE R 44 41 40 39 43 42 2 1 3 6 5 4 7 NC 10 9 8 11 12 NC 15 16 17 13 14 35 34 38 37 36 31 32 33 27 28 29 30 21 22 NC 18 19 20 24 25 26 23 ACIN LF ACOUT R ACOUT L NC ACIN LR ACIN RF ACIN RR VREF CREF TAPE L MPOUT QUAL SMUTE SPANA R SPANA L MPIN LEVEL MPX NC OUT FR OUT FL OUT RL NC GND NC OUT RR VDD SCL SDA CDL OUT CDR OUT CDGND CDR NC PHONE NC PHONE AFS CDL NC NC AM 4 ...

Page 16: ...OSW N C MASK SW2 E2PROM DET AVDD PHONE AVREF AVSS MASK SW1 MASK SW3 R QUAL S METER NOISE R DATA IFC OUT CH MUTE CD SW2 CD SW1 N C N C CH DATAC CH DATAH SC DATA CH CLK 100K 11 R110 1K 12 2 2K R112 13 17 16 18 19 23 24 25 26 27 28 30 31 32 33 22P C45 22P C46 X2 43 44 45 46 47 48 100K 100K 56 100K R69 100K R70 1K R67 1K R68 57 60 61 63 64 65 67 68 77 70 71 72 R80 1K R81 1K 79 80 15K R50 L6 99 98 97 9...

Page 17: ...SC CON KS4 MC DATA 98 KS1 99 100 KS3 KS2 96 97 OPEN KEY SRC KEY VREF CON 93 MC REQ 94 95 91 92 KR1 86 VOLUME B VOLUME A SC REQ 88 N C 89 90 87 WAVE IN KR3 KR2 84 85 F06 82 83 70 56 N C N C N C N C 51 52 N C N C N C 53 54 55 63 N C N C BVDD BVSS 57 58 59 N C N C N C 60 61 62 N C N C N C N C 64 65 66 N C N C N C 67 68 69 F01 77 AVDD N C N C N C 71 72 73 AVSS AVREF 74 75 76 80 F02 F03 F04 78 79 F05 1...

Page 18: ...PA1 PME1 219 220 267 756 268 221 266 265 248 212 208 233 245 242 229 225 228 203 204 PM1 PFPC1 PS2 PS3 PS1 226 227 230 232 231 224 206 258 246 257 247 716 210 211 218 244 775 737 782 F1 X25 A 1 X16 118 J 1 X16 118 FPC2 X16 16X ED1 P Px2 Rx2 Rx2 Rx2 P S Tx3 P V Nx2 Nx2 M Lx2 M M E K D Q Qx2 D Px2 B B A H G J Bx2 B F F B J B A C A B P P 243 262 251 Depends on model Refer to the parts list 272 217 23...

Page 19: ...RONT GLASS K H25 1108 04 PROTECTION BAG 100X300X0 03 219 3A B10 4165 01 FRONT GLASS E1 H25 1111 04 PROTECTION BAG 280X450X0 03 E1E2 219 3A B10 4166 01 FRONT GLASS E2 H54 2336 03 ITEM CARTON CASE K 220 3A B10 4152 04 FRONT GLASS H54 2337 03 ITEM CARTON CASE E1 221 3A B19 2133 03 LIGHTING BOARD H54 2344 03 ITEM CARTON CASE E2 222 3A B43 1284 04 BADGE 254 1A J19 5051 03 BRACKET L K B46 0100 50 WARRAN...

Page 20: ... RK73EB2E681J CHIP R 680 J 1 4W C3 CK73GB1H103K CHIP C 0 010UF K R62 RK73EB2E561J CHIP R 560 J 1 4W C5 CK73GB1H103K CHIP C 0 010UF K C6 CK73FB1A225K CHIP C 2 2UF K S1 10 S70 0856 05 TACT SWITCH C7 12 CK73GB1H103K CHIP C 0 010UF K S11 12 S70 0857 05 TACT SWITCH S13 S70 0851 05 TACT SWITCH C14 CK73GB1H103K CHIP C 0 010UF K S14 S70 0864 05 TACT SWITCH C15 CK73FB1A225K CHIP C 2 2UF K C16 CK73EB0J106K ...

Page 21: ...0 022UF K E1K C30 CK73GB1H223K CHIP C 0 022UF K E1K C129 130 CC73GCH1H270J CHIP C 27PF J C131 CC73GCH1H681J CHIP C 680PF J C31 CK73GB1H103K CHIP C 0 010UF K E1K C132 133 CK73GB1A224K CHIP C 0 22UF K C32 33 CE04NW1E4R7M ELECTRO 4 7UF 25WV E1K C140 CE04NW0J470M ELECTRO 47UF 6 3WV C34 CE04NW1V3R3M ELECTRO 3 3UF 35WV C141 142 CE04NW1HR47M ELECTRO 0 47UF 50WV C35 CK73GB1C683K CHIP C 0 068UF K C36 CE04N...

Page 22: ...73GB2A103J CHIP R 10K J 1 10W E1K R103 105 RK73GB2A471J CHIP R 470 J 1 10W R25 26 RK73GB2A913J CHIP R 91K J 1 10W E1K R106 107 RK73GB2A472J CHIP R 4 7K J 1 10W R108 110 RK73GB2A102J CHIP R 1 0K J 1 10W R27 RD14DB2H102J SMALL RD 1 0K J 1 2W K R111 RK73GB2A104J CHIP R 100K J 1 10W E1E2 R28 RK73GB2A223J CHIP R 22K J 1 10W K R29 RK73FB2B472J CHIP R 4 7K J 1 8W R112 RK73GB2A222J CHIP R 2 2K J 1 10W R30...

Page 23: ...OGUE IC R218 RK73EB2E101J CHIP R 100 J 1 4W IC3 M5237ML IC VOLTAGE REGULATOR R219 RK73EB2E100J CHIP R 10 J 1 4W IC4 TDA7560 ANALOGUE IC R220 RK73EB2E101J CHIP R 100 J 1 4W IC5 TDA7401 ANALOGUE IC E1K R221 RK73FB2B102J CHIP R 1 0K J 1 8W IC6 SI 8033JD ANALOGUE IC E1K R222 RK73GB2A223J CHIP R 22K J 1 10W IC7 ICL7660SIBA ANALOGUE IC E1K R223 RK73FB2B102J CHIP R 1 0K J 1 8W IC8 S 80837ANNP MOS IC R224...

Page 24: ...OR Q29 KRA105S DIGITAL TRANSISTOR K Q30 DTC144EUA DIGITAL TRANSISTOR Q30 KRC404 DIGITAL TRANSISTOR K Q31 32 2SC4081 TRANSISTOR Q33 34 DTA124EUA DIGITAL TRANSISTOR Q33 34 KRA303 DIGITAL TRANSISTOR K Q35 2SC4081 TRANSISTOR Q36 DTC124EUA DIGITAL TRANSISTOR Q36 KRC403 DIGITAL TRANSISTOR K Q37 41 DTC143TUA DIGITAL TRANSISTOR E2 Q37 43 DTC143TUA DIGITAL TRANSISTOR E1K Q37 43 KRC410 DIGITAL TRANSISTOR K ...

Page 25: ...ampling 8 Times OverSampling D A Converter 1 Bit 1 Bit Spindle Speed CD Wow Flutter Below Mesurable Limit Below Mesurable Limit Frequency Response 10 20kHz 1dB 10 20kHz 1dB Total Harmonic Distortion 0 01 1kHz 0 01 1kHz S N Ratio dB 105dB 1kHz 105dB 1kHz Dynamic Range 93dB 93dB Channel Separation 95dB 95dB MP3 decord MPEG1 0 Audio Layer3 WMA decord Preout Level mV Load Unbalanced 1800mV 10kΩ CD CD ...

Page 26: ...80mm Digital Filter D A 8 Times OverSampling D A Converter 1 Bit Spindle Speed CD Wow Flutter Below Mesurable Limit Frequency Response 10 20kHz 1dB Total Harmonic Distortion 0 01 1kHz S N Ratio dB 105dB 1kHz Dynamic Range 93dB Channel Separation 95dB MP3 decord MPEG1 0 Audio Layer3 WMA decord Preout Level mV Load Unbalanced 4500mV 10k CD CD CH Preout Impedance 80 AMP Maximum Power 50wx4 Full Bandw...

Page 27: ... KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str 15 63150 Heusenstamm Germany KENWOOD ELECTRONICS FRANCE S A 13 Boulevard Ney 75018 Paris France KENWOOD ELECTRONICS BELGIUM N V Leuvensesteenweg 248 J 1800 Vilvoorde Belgium KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano ltaly KENWOOD IBÉRICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 4...

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