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Kenwood KRC-108S, Service Manual

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Kenwood KRC-108S Service Manual Download Page 8

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

9

10

K

L

M

N

O

P

Q

R

S

T

1

2

3

4

5

6

7

PC BOARD  (FOIL SIDE VIEW)

IC

Q

address

1

6P

2

4R

3

4R

4

2Q

5

4N

6

4R

50

4O

51

4O

52

4O

53

4N

54

3O

55

3O

56

2N

57

3N

58

4N

59

4N

60

3N

61

3N

62

4P

150

4R

151

3Q

153

3S

200

4S

201

3S

202

4S

203

3S

260

5R

261

5S

301

5R

350

3P

351

4P

352

4P

353

4P

370

3Q

371

4Q

450

2R

451

2R

W106

R151

W118

B E

R205

C210

W117

C202

W101

C200

C201

B

E B

R102

R101

W120

C101

R103

R113

R109

R108

R112

R107

100

1

C60

B

R206

C153

W116

B E

R207

C156

R135

R134

E

7

8

1

14

C164

R203

B E

C155

R150

C157

C154

C158

B E

R201

15

14

C14

R115

5

4

C104

R114

R117

R118

R69

W107

1

3

W108

R155

C13

28

1

C151

R157

R158

R156

B E

E

R154

R372

C103

81

80

C102

50

51

31

30

R121

R125

R122

R127

R123

R120

C5

R7

R3

C7

R5

R59

R68

R131

R124

R126

R57

C52

R352

B

B E

C351

W114

E

R52

B

E

E B

R54

C54

R58

C6

R8

R250

C8

R6

R4

C2

R2

C1

R1

C251

R251

W115

E

B

B E

R60

R61

B E

E

B

E B

R63

R62

R64

B E

R454

R451

R450

C452

R452

R455

B E

R453

B E

E B

W102

W105

W104

W103

W112

W111

R152

W110

R13

R16

R153

W121

W113

W109

TH1

R14

R15

B

E

B E

Q151

Q260

Q301

Q202

IC3

Q200

Q150

IC2

Q371

IC6

Q351

IC1

Q50

Q352

Q353

Q62

Q59

Q58

Q53

Q54

Q52

Q61

Q153

Q450

Q451

Q55

Q57

R370

R350

W75

12

1

R261

R307

W1

B

E

L9

24

C206

L8/W11

L10/W84

1

ED1

C350

W51

W46

W13

R104

W10

W21

W4

R105

R106

R260

1

W15

W16

W19

1

W41

R300

R302

R303

R301

W33

R110

W23

W38

W44

W43

W18

W17

C152

6

W9

W7

W5

W2

W14

W12

R202

B

E

E

B

R200

W6

W20

W31

W35

W29

W27

W22

W32

W30

R119

W37

W39

W45

W47

W49

W40

W28

W24

C150

W25

L3

R373

R371

B

E

W86

PL1

9

10

PL2

21

X1

W68

22

25

R340

C9

W85

C250

8

C3

C352

W53

W58

W54

W56

W61

W64

W72

W67

W66

W70

W69

C55

R353

E

B

W83

R55

R50

C53

C10

W73

1

W79

C56

W81

5

1

C4

R111

W78

B

E

W74

C58

R67

C57

B

L5

L4

C15

1

2

W8

C450

C451

C17

C160

C159

C18

C16

C161

C162

W50

W34

1

2

W26

W48

W36

25

24

W62

W63

W57

R351

W55

W52

W60

W59

W65

C50

16

8

W77

W76

R66

R65

E

L1

B

E

9

1

W80

D151

Q370

Q203

Q261

A1

D352

CN2

P1

D100

D261

D260

D103

D102

D101

WH1

D104

D200

D13

D152

D150

CN1

D52

D351

Q350

D54

D51

D350

IC5

D55

Q51

D53

D56

(J74-0960-12)

X14-6150-10/0-21

J1

Q201

J5

IC4

D371

D370

J2

D50

J2

Q60

Q56

12

1

CN1

1

2

3

ATT

R3

AUD

SRC

AUTO

4

5

R1

RST

BAND

R4

R2

CLK

6

D2

D4

D9

D1

D10

D1

1

X13-9660-10 (J74-0964-12)

D8

D7

D5

D3

D12

D6

Summary of Contents for KRC-108S

Page 1: ...64 1932 02 Cassette lid A53 1675 03 Knob REW K27 3556 04 Knob FF K27 3555 04 Knob EJECT K27 3554 03 Lever D10 3031 04 x2 Mounting hardware J21 9491 03 DC cord E30 4783 05 KRC 108S E30 4784 05 KRC 188 Stay J54 0606 04 Screw set N99 1632 05 Escutcheon B07 2181 02 LCD B38 1024 05 Panel A64 1933 02 Cassette lid A53 1677 03 Knob REW K27 3556 04 Knob FF K27 3555 04 KRC 108S KRC 188 ...

Page 2: ...2 BLOCK DIAGRAM 3 MICROCOMPUTER S TERMINAL DECRIPTION 4 ADJUSTMENT 6 PC BOARD 7 SCHEMATIC DIAGRAM 11 EXPLODED VIEW 15 PARTS LIST 17 SPECIFICATIONS BACK COVER CONTENTS KRC 108S 188 ...

Page 3: ...7SEG LCD ED1 FM ANT AM ANT RF GND FM B AM B OSC GND OSC GND OSC GND VT PLL B IFC OUT SDA SCL DIG GND IF1 B IF1 GND S METER IF2 GND SD FM B PON ACC DET B U DET SCL MUTE SDA P CON RESET FWD REV MOTOR Rch COM Lch TAPE MP IN AM MPX OUT RR OUT LR OUT RF LEVEL SCL SDA OUT LF STBY MUTE Rch Lch T MUTE FWD REV B U SMUTE 9 FF REW BU5V AM B VDD 5V PACK IN ANT CON BEEP SVR AMP STBY SVR AC GND BEEP Rch Lch TAP...

Page 4: ...P40 I SD Station detection H Station detected 27 P77 O PLL_CLK IC3 clock output 28 P76 I O PLL_DATA IC3 data input output 29 P75 I IFC AM bandwidth H Station detected 30 P74 O AM B AM power output H ON 31 P73 O FM B FM power output H ON 32 P72 O SCK IC2 clock output 33 P71 I O SDA IC2 data input output 34 P70 O NC Not used 35 RESET I RESET Reset input 36 37 P81 80 O NC Not used 38 XIN X_IN Clock i...

Page 5: ...input 5 V 92 VREF VREF A D reference voltage input 93 Avss Avss Analog power input Vss 94 COM3 O NC Not used 95 COM2 O COM3 LCD common output 96 COM1 O COM2 LCD common output 97 COM0 O COM1 LCD common output 98 VL3 I VL3 LCD power input 99 VL2 I VL2 LCD power input 100 C2 I NC Not used MICROCOMPUTER S TERMINAL DESCRIPTION How to Read the Destination Type The destination type is set by reading the ...

Page 6: ...ield plate core center area 2 During RVS transport adjust screws R and R so that line B of 2 LINE TAPE passes trough the center of the head shield plate core center area 3 After the alignment above reverse the trans port direction and check the FWD alignment again If it is deviated perform alignment again Tape used SCC 1659 manufactured by A BEX 2 HEAD AZIMUTH TCC 153 10kHz Connect a AC voltmeter ...

Page 7: ...60 W66 W67 W86 W81 W85 W62 W59 W50 W25 L8 W11 W52 W78 W48 W10 W57 W55 W65 W63 C150 W76 W77 C206 L9 W74 W75 W80 W36 W26 W34 W18 W8 W2 W40 W24 W13 W73 C4 C3 W16 W15 W21 W72 L5 PL1 W1 W4 W19 L4 L10 W84 W7 W9 W69 W17 W5 W70 W12 W6 W20 W64 W28 W41 W61 W22 W47 W45 W30 W32 W53 ED1 W29 W54 W56 W51 W49 W27 W35 W58 W37 W31 W38 W44 W14 W23 W33 W46 W43 W68 W79 W39 PL2 R200 R202 C15 R55 R67 R350 R370 R373 C55 ...

Page 8: ...112 W111 R152 W110 R13 R16 R153 W121 W113 W109 TH1 R14 R15 B E B E Q151 Q260 Q301 Q202 IC3 Q200 Q150 IC2 Q371 IC6 Q351 IC1 Q50 Q352 Q353 Q62 Q59 Q58 Q53 Q54 Q52 Q61 Q153 Q450 Q451 Q55 Q57 R370 R350 W75 12 1 R261 R307 W1 B E L9 24 C206 L8 W11 L10 W84 1 ED1 C350 W51 W46 W13 R104 W10 W21 W4 R105 R106 R260 1 W15 W16 W19 1 W41 R300 R302 R303 R301 W33 R110 W23 W38 W44 W43 W18 W17 C152 6 W9 W7 W5 W2 W14 ...

Page 9: ...12 11 10 9 8 7 6 5 4 3 2 1 RST KI3 KS4 KS3 KS2 KS1 KS0 KI2 KI1 KI0 ILL B ILL GND 2 2K R307 R110 1K R106 1K R105 1K R104 1K 2 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 52 51 53 54 65 57 55 56 58 59 60 61 62 63 64 70 66 67 68 69 71 72 73 74 75 78 76 77 79 80 97 R103 10K R302 47K R303 47K R300 47K 47K 51 54 53 52 56 26 30 27 28 10 R301 56 47K X1 8 664MHz 27P C102 27P C103 49 48 47 46 5...

Page 10: ...3 COM3 2 COM2 7 S4 5 6 S2 S3 8 S5 9 S6 18 17 16 14 13 15 11 10 12 S10 S7 S8 S9 S11 S12 S15 S13 S14 23 22 21 20 19 S18 S16 S17 S20 S19 25 24 S21 S22 95 97 96 85 86 88 90 89 87 73 74 75 77 78 79 80 81 76 82 83 84 69 70 71 72 NO NO NO YES YES R350 NO NO YES YES YES C202 YES NO NO YES YES L8 116 W84 W11 117 121 GND LINE SIGNAL LINE X14 6150 xx A IC1 M38258MCD066FP IC2 TDA7400D IC3 HD74HC27FP IC4 TDA73...

Page 11: ...d numbers larger than 700 are not supplied A B 1 2 3 31 54 4 99 101 115 53 111 102 102 12 103 111 31 33 14 102 114 52 39 10 40 34 58 57 39 9 35 112 113 7 6 26 25 HD1 56 100 106x2 37 36 38 CM1 20 5 1 23 22 105x2 113 112 16 18 17 19 102 104 KRC 108S 188 ...

Page 12: ...2006 46 N82 2006 46 N83 3005 46 N64 3010 46 N80 3008 46 N83 3020 46 N86 2606 46 A B C D E F G H J D E Jx2 D C X13 9660 10 E 741 714 708 746 731 711 701 730 715 704 742 745 E E E E X14 6150 xx Fx2 Bx2 Bx2 H B B D 216 202 DC1 205 228 217 224 226 ME1 225 240 218 F1 207x2 A X14 A 1 X14 J 2 X14 J 1 X14 J 5 X14 L 1 G 220 222 221 213 CL1 PA1 KRC 188 ONLY 223 209 KRC 108S 188 ...

Page 13: ...0 21 17 Dest inati on Ref No Parts No Description Dest inati on PL1 2 B30 1418 15 LAMP 5 5V 125MA GR K PL1 2 B30 1576 05 LAMP 5 5V 125MA MI M1 C1 2 CK73GB1H152K CHIP C 1500PF K C3 4 CE04CW0J470M ELECTRO 47UF 6 3WV C5 6 CC73GCH1H101J CHIP C 100PF J C7 8 CK73GB1H223K CHIP C 0 022UF K C9 10 CE04CW1A101M ELECTRO 100UF 10WV C13 14 CK73FB1C224K CHIP C 0 22UF K C15 18 C90 5296 05 ELECTRO 0 22UF 50WV C50 ...

Page 14: ...73GB1J101J CHIP R 100 J 1 16W R150 151 RK73GB1J472J CHIP R 4 7K J 1 16W R152 RK73FB2A102J CHIP R 1 0K J 1 10W R153 RK73FB2A913J CHIP R 91K J 1 10W R154 RK73FB2A751J CHIP R 750 J 1 10W R155 RK73GB1J431J CHIP R 430 J 1 16W R156 RK73GB1J154J CHIP R 150K J 1 16W R157 RK73GB1J101J CHIP R 100 J 1 16W R158 RK73FB2A333J CHIP R 33K J 1 10W Ref No Parts No Description Dest inati on R201 RK73FB2A223J CHIP R ...

Page 15: ... DIGITAL TRANSISTOR M1 Q450 451 DTC143TK DIGITAL TRANSISTOR M1 Q450 451 UN2216 DIGITAL TRANSISTOR M1 TH1 PTH9C42BD471Q POSITIVE RESISTOR A1 2D X86 3160 11 FRONT END UNIT 1 2A A10 4328 08 CHASISS CALKING ASSY 4 3B J26 4017 08 PRINTED WIRING BOARD ASSY 5 2A J21 7778 08 MOUNTING HARDWARE Ref No Parts No Description Dest inati on 6 2B D10 4091 08 SLIDER 7 2B D13 1323 08 GEAR 9 2B D10 4200 08 ARM ASSY ...

Page 16: ...Bandwidth Power 20Wx4 at less than 1 THD TONE Bass 100Hz 10dB Treble 10kHz 10dB GENERAL Operating voltage 11 16V allowable 14 4V Current consumption 10A Installation size W 182 mm H 53 mm D 155 mm Weight 1400g KRC 108S 188 KENWOOD CORPORATION 14 6 Dogenzaka 1 chome Shibuya ku Tokyo 150 8501 Japan KENWOOD SERVICE CORPORATION P O BOX 22745 2201 East Dominguez Street Long Beach CA90801 5745 U S A KEN...

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