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Kenwood GX-401EF2, Service Manual

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Kenwood GX-401EF2 Service Manual Download Page 10

K

L

M

N

O

P

Q

R

S

T

1

2

3

4

5

6

7

12

11

PC BOARD (COMPONENT SIDE VIEW)

E

B

B E

B E

BE

E

B

EB

B

E

B

E

BE

E

B

EB

EB

E

B

E

BB

E

R102

R427

R429

R426

R430

R428

R425

R710

R806

R805

R809

R878

R825

R856

R848

C818

R888

R923

R1

R849

R847

R836

R850

R833

C28

C30

R872

R860

R867

R863

R862

R864

R869

R873

R876

R875

X82

L62

R602

C603

R505

C712

R508

R840

R816

R815

C801

R826

R837

X81

R839

R846

R845

R829

R857

R832

W81

C800

R828

R870

R865

R858

R877

R823

R920

R834

R810

R820

R831

R841

R711

L801

R824

R835

R822

R821

R721

R15

R900

R880

C29

R851
R879

R898

R887

R13

C8

R12

C14

R32

R31

R27

R28

C19

C20

C25

C26

L17

C121

R913

R918

R885

R892

R896

R890

R886

R895

R897

R893

R910

R899

R891

R800

R801

R807

R808

R803

C803

R804

R818

R912

R914

R229

R911

R206

R230

L21

R802

R208

R827

R714

R209

R715

C716

R713

C313 C314

W12

C433

R435

R438

R440

C422

C432

C434

R436

R105

C421

C431

R437

R725

R707

R709

R706

R503

C713

F2

C424

F1

C423

C114

R117

R124

L16

C118

R119

R118

L14

L15

L13

C419

C708

R419

R421

R705

R702

O

G

I

R439

4

1

5

8

14

8

14

8

1

7

1

7

1

22

1

4

5

8

15

28

1

14

5

8

1

4

1

7

14

8

100

1

30

51

80

81

31

50

1

11

2

12

1

13

14

26

9

16

1

8

1

10

21

30

31

40

11

20

R

HIUP

L

L

R

GND

DOLB

X11

W2

VR2

VR1

VR11

C215

R611

R612

R610

VPP

GND

L72

L71

C701

W11

L11

1

C703

R37

R38

R36

R35

R901

R903

R904

R720

R6

C133

C810

C903

C130

C127

C132

C131

C406

C407

C405

C715

C408

C612

C12

C15

C16

C7

C9

C10

C124

C214

C22

C212

C410

C409

C610

C208

C206

C209

C203

C205

C21

C210

C211

C213

C218

C3

C614

C613

C707

C722

C718

C711

C604

C602

C608

C721

L12

C202

C201

C720

L61

C207

C204

3

1

5

B

E

E

B

B

E

B

E

2

1

19

20

24

1

16

EB

B

E

9

5

1

10 6

2

13 11 7

3

4

8

12

7

1

6

12

1

2

24

25

BE

Q804

D602

CN3

Q603

D706

D501

Q2

D705

D902

Q904

Q801

Q805

D201

D206

Q205

D207

Q204

CN82

Q203

D506

D208

Q202

Q103

Q101

D701

D103

Q108

Q109

Q110

CN2

J2

J1

A61

A11

D712

D901

Q704

Q706

Q606

Q605

Q701

D710

D713

D903

D708

Q94

Q1

D601

D703

D604

D709

D1

CN81

CN1

IC2

IC81

IC1

IC72

IC84

IC21

IC31

IC32

IC22

IC71

IC13

IC12

(J74-1380-12)

IC41

X14-6212-71

SYNTHESIZER UNIT

SYNTHESIZER UNIT

(X14-6212-71)

Ref. No.

Address

IC

Q

1

6P

2

6N

12

6Q

13

6Q

21

5O

22

5P

31

4P

32

4P

41

2Q

71

3R

72

3P

81

5N

84

4O

1

4M

2

4M

94

3M

101

4Q

103

4Q

108

5R

109

5R

110

5Q

202

4O

203

4O

204

5O

205

5O

603

4L

605

6L

606

6L

701

2N

704

2R

706

2M

801

3N

804

3N

805

3N

904

4N

Refer to the schematic diagram for the

values of resistors and capacitors.

Summary of Contents for GX-401EF2

Page 1: ...IGITAL AUDIO VOL ADJ TONE BAL REG DISP SCAN MUTE LOUD AS LOCAL TUNE TRACK Front glass B10 4256 03 Blind plate F19 1357 04 Knob SEEK K23 1065 04 Knob VOL K23 1066 04 Knob 1 3 5 K25 1462 03 Knob 2 4 6 K25 1463 03 Knob CS EJ K24 3876 04 Knob NEWS K24 3877 04 Knob T B K24 3878 04 Panel assy A64 2724 02 Cassette lid A53 1703 03 Holder J19 5161 05 x 2 Cord with plug E30 6075 05 SUBARU GENUINE ...

Page 2: ...SW EQ IC1 DRIVER MOTOR IC2 P ANT Q94 BU DET Q709 ACC DET Q904 Q706 BU5V AVR A8V AVR Q704 Q708 PON5V SW LAMP AVR Q605 606 C5V AVR Q710 CD7V AVR Q701 DC DC A61 CD MECHA B 2 X25 MECHA CASSETTE DOLBY SYSTEM u COM IC81 SP OUT P ANT BU ACC TEL MUTE SMALL PANEL u COM IC1 ED1 VFD MATRIX KEY LAMP FM B SW A11 ANT SW IC21 FM AM CD MECHA CASSETTE CD CH IC22 19dB 11dB IC31 32 FIX EQ 34dB 34dB IC41 REAR SP SP F...

Page 3: ...itching when tape selected music Pch SW ON when playback a tape Q94 P ANT circuit control switch P ANT circuit control Q101 FM power switch FM 8V Q102 FM power switch Pch SW Q103 AM power switch AM 8V Q104 AM power switch Pch SW Q107 IF mode switch by force Output Lo when WIDE Q108 Noise amplifier Noise detection ouput buffer Q109 110 Noise amplifier Noise detection time constant switching Q201 Sw...

Page 4: ... I O CD mechanism clock input output 16 NC O Not used Ref No Application Function Operation Condition Q706 AVR for microcomputer 5 6V AVR Q707 AVR control for microcomputer 5 6V AVR Q708 Switch for P ON 5V Switch for P ON 5V Q709 BU detection Output Lo when BU ON Q710 Cassette mechanism sub motor driver power switch Sub motor driver VREF Q801 MUTE switch ICll3 and POWER IC hard mute Q802 DSI contr...

Page 5: ...ower control H Power on Panel µcom VFD ON terminal confirm H after that set H 34 NC O Not used N C 35 NC O Not used N C 36 M_MOTOR O CD mechanism main motor control H Motor on 37 VDD Power supply 38 X2 Main clock 12MHz 39 X1 I Main clock 12MHz 40 VSS GND 41 XT2 Sub clock 32 768kHz 42 XT1 I Sub clock 32 768kHz 43 RESET I H input after initialise L Reset less than 3V 44 BU_DET I BU detection L Norma...

Page 6: ...QUAL I RDS quality Receiving mode 83 MTL_OUT O Cassette mechanism output invert data when metal detection H Metal L Normal 84 MUSIC I Cassette mechanism between music detection H Between music L Music 85 MSGV O When Cassette mechanism select music gain switching H Normal L FF REW DPSS 86 F R O Cassette mechanism F R switching L FWD Initial mode H REV 87 METAL I Cassette mechanism metal detection H...

Page 7: ... 22 23 NC O Not used OPEN 24 AVDD Positive power supply 25 AVSS GND 26 ENC_UP I Encoder input UP 27 ENC_DOWN I Encoder input DOWN 28 33 NC I Not used 34 AVREF I GND 35 AVDD Not used 36 RESET I Reset input L Reset 37 XT2 Not used 38 XT1 I Not used GND 39 IC VPP Not used 40 X2 Main clock 8 38MHz 41 X1 I Main clock 8 38MHz 42 VSS1 GND 43 SC_CON I System computer communication and panel operation cont...

Page 8: ...re EMF 66dBµV and 1kHz Setting of MW and LW seek stop level Receive condition 999kHz an electric field intensity are EMF 35dBµV and Mod OFF Complete on condition that show ADJ OK when pressing on PRESET1 and PRESET6 keys Releasing the test mode when BU OFF or POWER OFF Adjument of Dolby level Playback the TCC 130 Dolby level tape Test pin level at 300mVrms adjustment VR1 TL and VR2 TR How to measu...

Page 9: ...89 R52 C15 C14 R32 C23 C51 R218 1 4 5 8 IC6 CN1 Q1 Q4 D1 Q2 Q3 Q5 CN2 X32 5240 01 J74 1249 02 R81 R80 C16 R17 R76 C40 C44 R79 C4 R9 R5 C12 R19 C19 C18 R21 C70 R70 C39 R102 C68 R104 C42 R84 C69 R101 C67 R103 R214 C33 C10 C11 R40 R47 R46 R10 C8 C5 R12 C6 C3 R6 R3 C20 C7 R11 R20 R49 C29 C1 C2 C55 1 16 22 1 G I O 14 1 28 15 25 1 51 75 76 100 50 26 16 1 17 32 SPDL MOTOR S GND S 7 5V LOE LIM DRVMUTE A 8...

Page 10: ...0 81 31 50 1 11 2 12 1 13 14 26 9 16 1 8 1 10 21 30 31 40 11 20 R HIUP L L R GND DOLB X11 W2 VR2 VR1 VR11 C215 R611 R612 R610 VPP GND L72 L71 C701 W11 L11 1 C703 R37 R38 R36 R35 R901 R903 R904 R720 R6 C133 C810 C903 C130 C127 C132 C131 C406 C407 C405 C715 C408 C612 C12 C15 C16 C7 C9 C10 C124 C214 C22 C212 C410 C409 C610 C208 C206 C209 C203 C205 C21 C210 C211 C213 C218 C3 C614 C613 C707 C722 C718 C...

Page 11: ...22 R607 R609 R605 R608 R606 R603 R604 R838 C806 C807 R8 C616 C615 C606 C605 R601 R717 C902 R902 C901 C601 R509 R716 R730 C719 R724 R507 R504 R502 R506 1 2 4 3 R921 IC82 J74 1380 12 X14 6212 71 Q710 Q703 D101 Q107 Q104 Q102 Q3 Q802 Q201 D202 D205 D204 Q803 Q708 Q709 Q705 Q702 Q607 Q608 Q609 Q903 Q901 Q902 D504 Q601 Q604 D502 D503 Q707 E E B 100 1 30 51 80 81 31 50 R HIUP L L R GND DOLB X11 W2 VR2 V...

Page 12: ... D6 Q1 X25 9382 70 A 2 J74 1381 12 X25 B 2 R28 R36 R38 R44 R26 R10 C5 R11 R7 W3 C4 L1 R40 R20 R17 R18 R19 R37 R39 R8 R34 R30 R31 R32 R25 R29 R16 R35 R33 R21 R15 R14 R12 W2 W1 R41 C2 R22 R23 R24 R6 R5 R9 R2 R3 R4 C1 R1 C3 16 17 48 49 64 1 33 32 IC1 TAPE BAND SCN DISP CD EJ CS EJ NEWS T I CD 1 15 TONE VOL POWER MUTE 1 5 1 5 4 2 PL4 PL5 PL6 PL3 PL1 PL2 D3 S17 S13 S14 S16 S15 S12 S11 S21 S19 S18 S20 E...

Page 13: ...1 100 4 7K R49 1 2 8 3 4 7 6 5 C79 C80 330 R108 330 R107 20K R121 R117 20K 68P C77 20K R125 R118 20K R122 20K 68P C78 R126 20K R47 10K 0 1 C51 2200P CP2 100 13 15 16 47 93 94 86 89 91 87 18 17 12 11 86 87 89 94 93 91 10 2 1 4 3 11 12 15 19 29 30 32 33 34 35 36 14 LOAD SLED SLED EJECT SPDL SPDL 1K R46 0 1 C33 FE C1 1 2 2 2200P 470P C71 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 GND NRFDET OFTR C OFTR B...

Page 14: ...0 1u50 19 20 21 22 23 GND VCC OUTRR SCL SDA 7 0 1 C217 L21 4 7uH 47u16 C218 15 16 17 OUTR QUAL SMUT OUTL 8 C314 0 1 R315 360K C417 R703 C709 1 15K C702 0 022 R729 13K R728 13K R727 13K R726 13K R710 3 9K 140uH F1 4700u16 0 1 C416 C418 C415 NC 13 RL P ANT 14 ACC 10 GND RR 11 12 FR FL 8 9 RL BU 5 6 7 FR FL RR 2 3 4 SMALL 1 0 33 C431 R402 130 R322 C413 C411 C414 C412 1 8K R436 1 5K R440 10K C434 0 01...

Page 15: ... 6 5 GND 3 4 2 7 8 VDD 1 C120 R123 4 9 4 9 96 59 93 95 11 10 13 MHz 81 82 NR 86 84 85 83 88 89 C18 C12 C21 C23 39 37 34 32 37 32 38 39 34 220K 68 69 70 62 63 71 76 1K 74 1K 55 52 51 53 54 56 R850 1K R836 47K 55 56 1K R858 R857 R848 R846 100K 22P 47 R CLK ILLM OUT CH REQC SC REQ 100K 50 48 49 AVREFO SMALL AVDD R REEL F REEL PHONE XT1 NC ACC DET RESET BU DET 45 R845 1K 46 R839 1K R841 1K 43 44 71 72...

Page 16: ... DATA 28 24 25 23 26 27 31 29 30 32 ENC DOWN ENC UP AVSS NC AVDD NC NC NC NC NC NC 33 34 SC REQ IC VPP MC REQ SC CON VSS1 RESET NC 11 12 13 NC NC NC 9 10 VSS VDD VFD BLK 6 7 8 NC NC 3 4 5 KS3 KS2 NC 64 2 1 KS0 KS1 61 62 63 NC NC NC 59 60 NC NC 53 NC 57 56 58 NC NC NC 55 NC 54 KR3 KR4 VFD ON 50 52 51 NC NC 49 X1 38 37 36 XT1 XT2 40 39 X2 43 42 41 46 45 44 KR1 KR0 47 48 KR2 47K R37 47K R39 47K R26 1...

Page 17: ... 62 9 HD1 17 15 4 22 12 12 20 5 6 7 26 48 48 49 27 94 S1 91 92 94 95 D N G H C C F B E E E B G H N D Ax2 Ax2 K J J E M2x2 5 BLK FLAT WASHER M2x13 M2x3 BLK M2x3 FLAT WASHER FLAT WASHER FLAT WASHER FLAT WASHER SCREW FLAT WASHER N09 4324 08 N19 2136 08 N09 4325 08 N09 4326 08 N09 4058 08 N19 2038 08 N19 2136 08 N19 2137 08 N19 2138 08 N09 4327 08 N19 2139 08 A B C D E F G H J K N GX 401EF2 ...

Page 18: ...5 N83 3006 46 N89 3008 46 A B C D E F G H J X14 W 11 X14 X25 FC2 PA1 X25 A A Fx2 F F ED1 E E E E E E Dx2 Gx2 B H H B B B H H H H 219 219 713 701 220 204 219 220 720 721 741 717 226 227 207 235 236 238 233 203 211 232 210 209 224 208 714 742 702 218 239 230 237 231 234 240 211 203 216 CL1 705 206 718 722 215 742 W2 800 1 3 5 2 4 H H Cx2 DME CME 219 C Jx2 J J J D Dx2 J J J J J D X14 X14 X14 X14 X14 ...

Page 19: ...429 419 427 F DM2 834 850 849 807 806 437 443 443 443 456 437 437 453 441 451 455 436 433 433 440 415 439 442 411 413 412 410 422 432 435 443 402 437 Bx2 Ax2 Dx2 DPU1 H F F G DFPC1 E A B C D E F G H N09 4460 05 N09 4472 05 N09 6004 05 N09 6006 05 N09 6007 05 N09 6051 05 N19 2163 04 N39 2020 46 φ2x8 M1 7x8 5 M1 7x2 5 φ2x3 5 M2x2 φ2x6 BLK 1 6 WASHER M2x2 X32 524 408 809 405 GX 401EF2 ...

Page 20: ... 2606 05 ELECTRO 0 47UF 50WV C10 CE04CW0J220M ELECTRO 22UF 6 3WV C11 CK73GB1H222K CHIP C 2200PF K C12 C90 2608 05 ELECTRO 1 0UF 50WV C13 14 CK73GB1C104K CHIP C 0 10UF K C15 16 C90 2605 05 ELECTRO 0 33UF 50WV C17 18 CK73GB1H123K CHIP C 0 012UF K C19 20 CK73GB1H821K CHIP C 820PF K C21 22 CE04CW1A330M ELECTRO 33UF 10WV C23 24 CK73GB1C104K CHIP C 0 10UF K C25 26 CK73GB1H821K CHIP C 820PF K C28 CK73FB1...

Page 21: ...0 10UF K C711 CE04CW1A101M ELECTRO 100UF 10WV C712 CK73GB1H103K CHIP C 0 010UF K C713 CK73GB1H223K CHIP C 0 022UF K C715 C90 2536 05 ELECTRO 10UF 16WV C716 CK73FB1H104K CHIP C 0 10UF K C718 C90 2597 05 ELECTRO 10UF 16WV C719 CK73FB1C224K CHIP C 0 22UF K C720 C90 2945 05 ELECTRO 0 047F 5 5WV C721 CE04CW0J331M ELECTRO 330UF 6 3WV C722 CE04CW1A101M ELECTRO 100UF 10WV C723 CK73GB1H122K CHIP C 1200PF K...

Page 22: ...GB2A201J CHIP R 200 J 1 10W R410 RK73GB2A272J CHIP R 2 7K J 1 10W R411 418 RK73EB2E2R2J CHIP R 2 2 J 1 4W R419 RK73GB2A123J CHIP R 12K J 1 10W R420 RK73GB2A101J CHIP R 100 J 1 10W R421 RK73GB2A153J CHIP R 15K J 1 10W R425 426 RK73GB2A272J CHIP R 2 7K J 1 10W R427 428 RK73GB2A242J CHIP R 2 4K J 1 10W R429 430 RK73GB2A911J CHIP R 910 J 1 10W R435 436 RK73GB2A182J CHIP R 1 8K J 1 10W R437 438 RK73GB2...

Page 23: ...273J CHIP R 27K J 1 10W R863 RK73GB2A104J CHIP R 100K J 1 10W R864 RK73GB2A102J CHIP R 1 0K J 1 10W R865 RK73GB2A471J CHIP R 470 J 1 10W R866 RK73GB2A104J CHIP R 100K J 1 10W R867 RK73GB2A471J CHIP R 470 J 1 10W R868 RK73GB2A104J CHIP R 100K J 1 10W R869 RK73GB2A101J CHIP R 100 J 1 10W R870 RK73GB2A470J CHIP R 47 J 1 10W R871 RK73GB2A104J CHIP R 100K J 1 10W R872 RK73GB2A470J CHIP R 47 J 1 10W R87...

Page 24: ... DIGITAL TRANSISTOR Q203 UN5213 DIGITAL TRANSISTOR Q204 205 DTC343TK DIGITAL TRANSISTOR Q601 UMC2N TRANSISTOR Q603 2SB1184 TRANSISTOR Q604 2SC2412K S TRANSISTOR Q604 2SD601A TRANSISTOR Q605 606 2SB1565 E F TRANSISTOR Q607 UMC2N TRANSISTOR Q608 2SC2412K S TRANSISTOR Q608 2SD601A TRANSISTOR Q609 DTC144EUA DIGITAL TRANSISTOR Q609 UN5213 DIGITAL TRANSISTOR Q701 2SB1565 E F TRANSISTOR Q702 2SC2412K S T...

Page 25: ...6 CC73GCH1H151J CHIP C 150PF J C17 CK73GB1H472K CHIP C 4700PF K C18 CC73GCH1H221J CHIP C 220PF J C19 20 CK73GB1C104K CHIP C 0 10UF K C21 CK73FB1A225K CHIP C 2 2UF K C23 CK73GB1H102K CHIP C 1000PF K C24 CK73GB1E223K CHIP C 0 022UF K C25 CK73GB1H153K CHIP C 0 015UF K C26 CK73GB0J105K CHIP C 1 0UF K C28 CK73GB0J105K CHIP C 1 0UF K C29 CK73GB1C104K CHIP C 0 10UF K C33 CK73GB1C104K CHIP C 0 10UF K C35 ...

Page 26: ...3 03 ARM 413 3E D10 4584 03 ARM 414 3F D10 4585 03 ARM 415 2E D10 4586 03 SLIDER 416 3F D10 4587 22 SLIDER 417 3F D10 4588 03 SLIDER 418 3F D10 4595 04 ARM 419 3F D10 4596 14 ARM 422 2E D13 2151 04 GEAR 423 2F D13 2152 04 GEAR 424 3F D13 2153 04 GEAR 425 3F D13 2154 04 GEAR 426 3F D13 2155 04 WORM 427 3F D13 2156 14 GEAR 428 3F D13 2157 04 GEAR 429 3F D13 2158 04 GEAR 430 3F D13 2168 04 GEAR 431 3...

Page 27: ...CM2 1A T42 1001 08 MOTOR ASSY SUB HD1 2B T31 0225 08 PLAYBACK HEAD Indicates safety critical components Ref No A d d N e w Parts No Description Desti nation FM Section Frequency Range 87 5MHz 108 0MHz Frequency Step 50kHz Usable Sensitivity S N 26dB 0 7µV 75Ω Quieting Sensitivity S N 50dB 1 6µV 75Ω Frequency Response 3 0dB 30Hz 15kHz S N 65dB MONO Selectivity 80dB 400kHz Stereo Separation 35dB 1kH...

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