JVC MX KB2 Service Manual

SCHEMATIC DIAGRAMS

COMPACT COMPONENT SYSTEM

MX-KB2

CD-ROM No.SML200408

Contents

Wiring diagram Block diagram Standard schematic diagrams Printed circuit boards

Area suffix

B ------------------------------ U.K. E ---------- Continental Europe EN ----------- Northern Europe EV ------------- Eastern Europe

2-1 2-2 2-3

2-10 to 13

No.MB259SCH

2004/8

In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.

Wiring diagram

1).

2).

AUX INPUT

SJ500

AUX INPUT PCB P/N:11-01002-05

CN504

REMARK:

AC CORD

E/EN/EV Version AC Cord P/N.: 30-00300-01L

B Version AC Cord P/N.: 30-00300-02L

TRANSFORMER

P/N:15-01002-02

P/N:20-61073-11

7P UL2547+2651 P=2 L=250mm

CN803

CN802

POWER PCB

P/N:11-01002-01

CN801

P/N:20-42110-00

11P UL1007#22 P2.5 L=250mm

CN861

CN804

P/N:20-41051-37

5P UL2651#28 L=500mm

P/N:20-45041-80

4P UL1007#20 L=250mm

CN901

P/N:11-01002-06

R

SPEAKER PCB

L

FM ANT

TUNER PCB

P/N:11-01002-02

P/N:20-61030-00

3 PIN UL2547#30 P=2 L=360mm

LOGIC DECK

A PLAY HEADER

LOGIC DECK CONTROL BUS

DISPLAY & KEY

P/N:20-61030-02

3P UL547#30 P=2 L=300mm

J601J602

AM ANT

TU-R

AGND

TU-L

+12V

+5.6V

DGND

STEREO

CD-EN

PLL-DAT

PLL-CLK

PLL-PER

RDS-CLK

RDS-DAT

CN601

P/N:25-61070-00 7 PIN UL2854#30 P=2 L=360 mm

B R/P HEADER

P/N:25-61260-80 13 PIN UL2896 P=1.25 L=260 mm

13P UL2547+2651 P=2 L=370mm

P/N:20-61133-01

CN202

CN101

L-IN AGND R-IN

R.CHR.CH+ GND L.CH+ L.CHGND E-S

CN103

GND NIL SOL-B B-M-SW B-T-SW PHO-B REC-SW T-MOTOR A-T-SW GND PHO-A SOL-A A-M-SW

TU-R

AGND

TU-L

+12V

+5.6V

DGND

STEREO

CD-EN

PLL-DAT

R-IN

GND

PLL-CLK

PLL-PER

RDS-CLK

CN110

L-IN

RDS-DAT

CN205

AC1

CN201

MAIN PCB

P/N:11-01002-00

AC2

-27V

CGND

+5.6V

D-DAT

D-CLK

D-STB

IR-IN

JOG-A

JOG-B

KEY2

KEY1

CN207

P/N:20-41130-00 13 PIN UL2651#28 P=2 L=250mm

ECO HP-M MUTE STBY L-OUT GND R-OUT

+9V

+5V

+12V

+5.6V

AGND

DGND

CGND

P/N:20-41020-00 2PIN UL2651#28 P=2 L=250mm

CN208

SLT

FM+

SW2

GND

SW1

GND

RL-

+5V

RL+

MO-

EMT

MO+

CATH

OL-DET

OL-PROT

CN206

AC1

AC2

-27V

P/N:20-51061-20 6 PIN UL1571#30 P=2 L=100mm

CN402

FM-

DM-

DM+

16.V-CEN

15. COM

14. E

13. D

12. A

11. B

10. C

9. F

8. GND

7. LD

6. VR

5. PD

4. F+

3. T+

2. T-

1. F-

CN204

10PIN UL2651#28 P=2 L=250mm

P/N:25-61135-80 16 P Ul2896 P=1 L=135 mm

CN401

P/N:20-41101-24

CD DECK

PICK UP

HTAC

DNG

+OM

1WS

2WS

TME

-OM

+LR

V5+

-LR

MOTOR PCB

3CD MODULE

CW3

P/N:25-83100-02 2PIN UL2651#28P=2L=100mm

HEADPHONE PCB

P/N:11-01002-05

CN902

CN511

CN510

P/N:25-94060-80 2PIN UL2468#26

TOP LEFT KEY

P/N:11-01002-12

LEFT KEY

P/N:11-01002-10

CN509

CN503

CN505

IR1 GND IR3 LED+

CN500

AC1

AC2

-27V

IR-IN

KEY2

KEY1

+5.6V

CGND

D-STB

D-CLK

D-DAT

JOG-A

JOG-B

MAIN KEY

P/N:11-01002-09

P/N:20-41040-00

4 PIN UL2651#28 P=2 L=50mm

DISPLAY BOARD P/N:11-01002-07

P/N:20-83050-05

5 PIN UL2651#28 P=2 L=50mm

CN501

KEY1

KEY2

CGND

JOG-A

JOG-B

CGND

KEY1

KEY2

CN502

JOG-A

JOG-B

CN506

P/N:25-94060-80 2 PIN UL2468#26

TOP RIGHT KEY P/N:11-01002-13

RIGHT KEY BOART P/N:11-01002-11

CN512

CN514

CN508

REMOTE RECEIVE P/N:11-01002-14

CN513

P/N:25-83100-02

2P UI2651#28 P=2 L=100mm

2-1

Block diagram

KEY BOARD SECTION

CD 2

S501

SC6122

REMOTE RECEIVER

ENCODE VOLUME

45

EN500

3

2

1

+9V

U101

TA8189

4CH Pre+Rec

AMP Wit h ALC

BIAS OSC R/P SWITCH

INVERTER CIRCUIT

LOGIC DECK-TP

FM RECEIVER

HEADER

IC 602

TA2099N

IF

IC 600

TC9257 PLL

AUX INPUT

JOB-A JOB-B

H CASSETTE A L CASSETTE B

REC-E

H-PL AY L-REC

+9V

KEY2

VFD

KEY1

U500 SC6311

VFD CONTROL / DRIVER

KEY SCAN

STB

DATA

CLK

CUP

87EP26F-4K76

REC SIGNAL OUTPUT

FIL AMENT

AC3.3V

+5V

STANDBY LED

CDRW GAIN CONTROL

+5V

VCC

DATA AND CONTROL BUS

U406

TC74HC14

STB DATA

CK

L CH R CH

L CH

R CH

L CH

R CH

+5V

R503

680R

LED500

GVSW

L CH

R CH

SDA

REQ

SCL

L CH

R CH

U201 TC9422F

SYSTEM ELECTRONIC VOLUME

(Tone control Input

selector Main volume)

SYS_MUT

PICK UP

A

B

D

E

U402 TA2153

RF AMPLIFIER

R F

RFCT

RFPP

FEO

U401 TC9462

DIGI TAL SERVO

1 BIT DA CONVERTER

U404 TC94A02F

CD ROM DECODE

MP3DE CODE

DA CONVERTER

R832

10K

R831

10K

D803

IN4001

C

+9V

Q812 8050

+9V

LD

F

R241 10K

Q813 8050

LIMIT SW

+5V

FOO TRO DMO

FMO

ADDRESS BUS

DATA BUS

VDD 3V

VDOT 3.3V

-VC

+VC

IC801 STK402-050

LOW LOGIC DETECT

PROTECT ENABLE

Q860.861.864.865

DETECT

OVERLOAD

ENABLE

PROTECT

F-

T+

T-

F+

U403 TA2092N

DIGI TAL SERVO DRIVER

U405 SRAM (SDJ)

128K X 8 (15ns)

WHEN USE HEAD PHONE THE CONTROL VOLTAGE

IS LOGIC LOW LEVEL

+9V

VDD 3.3V

CN402

HEAD PHONE

Q862 8550

R862

10K

R877

22K

Q867

5050

TO CD DECK

DM+

1

2

1

2

DM-

+12V

GRID VOLTAGE-27V AC 3.3V FILAMENT VOLTAGE +6V TO CUP

3

4

3

4

FM+

+VC

-VC

+12V

+9V

CE803

100UP / 50V

SLT

FM-

ECO POWER ON ECO LOGIC LOW LEVEL

5

6

D849- D852

D806- 809

L7809CV

Q803

D845 IN4001

U803

L7806CV

M-

M+

EMIT

ML+ IN 1

ML-

SW1

SW2

AC5

AC6

AC7 AC8

AC10 AC9 AC12

AC11

D810- D814

R242 10K

T06910A

1

11

2 3

4 5

6 7

8

IN2

U203 TA7291S

BRIDGE DRIVER

IN1

IN2

U202 TA7291S

BRIDGE DRIVER

R233 10K

R232 10K

3CD CHANGER DRIVER SECTION

TRANSFORMER

!

T802

TR801

R841

10K

AC3

AC4

Q822 8050

10

RL802

9

Q809

8050

C801

0.01U/250V

!

CE868

10UF/25V

R842 10K

R814 10K

L803

TO 3CD DECK

+6V

CN204

1

2

3

4

5

6

7

8

9

10

AC PLUG

!

L804

T4.0A L250V

MO+

MO-

CATH

EMIT

+5V

RL+

RL-

SW1

GND

SW2

2-2

Standard schematic diagrams

Power amp. / Primary section

METAL FILM RESISTORS NONFLAME FUSIBLE

AC PLUG

!

AMP STK402-050

PROTECT CIRCUIT

! !

!

2-3

Main section

80

81

82

83

3835-AIN

84

85

86

87

88

89

90

91

92

93

94

95

96

PLL-DAT

97

PLL-CLK

98

PLL-PER

99

VDD

100

Vss

123456789

3835-C3

XOUT

79

78

77

76

75

74

73

72

71

70

69

68

676663626160595857565554535251

65

64

T-A/B

B-CUT

A-PHP

3835-B

3835-A

OL-DET

PRO-EN

MP3-SCLK

U300

87EP26F-4K76

XIN

RESET

XT-OUT

XT-IN

TEST

ESS-CLK

F-SHIFT

REMOTE

MUTE

VFD-CLK

VFD-FTB

VFD-DAT

101112131415161718192021222324252627282930

MP3-SDAT

ESS-DATE

MP3-REQ

ESS-STBE

REC-EN

A-PHO

B-T-SW

A-M-SW

T-MOTO

SOL-A

SOL-B

ECO

VOL-STB

POWER

MR+

B-PHO

VOL-DAT

B-M-SW

VOL-CLK

REC-SW

RDS-CLK

VDD

50

JOB-A

JOB-B

Vss

REC-SW

49

BOOT

48

VREF

47

KEY1

46

KEY2

45

KEY3

44

POW-D

43

STEREO

42

RDS-DAT

41

SW2

40

SW1

39

STL

38

MD+

37

MD-

36

DUCK3

35

DUCK2

34

DUCK1

33

BUCK0

32

DUCK

31

CEE

D-SEN

MR-

CD.RW

CD.RES

2423222120

CH2/A

CH2/B

CH1/A

CH1/B

123456789

19181716151413

NF2

ME/02

PRE/02

U101 TA8189N

NF1

ME/01

PRE/01

A/B

DET

VCC

MIX/0

AGND

M/N

REC/01

REC/02

RNF

REC/I1

CNF

REC/I2R

101112

ALC

GND

123456789

101112

13

2-4

Display & Key control section

3CD 08 00:08

ENCODER VOLUME

STANDBY LED

FROM MAIN PCB

DISPLAY BOARD

MAIN KEY BOARD

RIGHT KEY BOARD

LEFT KEY BOARD

TOP RIGHT KEY BOARD

TOP LEFT KEY BOARD

2-5

CD control section

TO MCU

TO CD DECK

TO PICK UP

U401

TC9462F

2-6

MP3 section

SDA

REQ

SCL

TO MCU

646362616059585756555453525150

XI

XO

VSSX

1

RESET

2

MIMD

3

AD0

4

AD1

5

SDA

6

SCL

7

AD2

8

VDDT

9

SD0

10

AD3

11

AD4

12

SDIO

13

BCKIA

14

LRCKIA

15

AD5

16

CE

DVDDEVSS

171819202122232425262728293031

VDDX

STANDBY

CKO

VSSL

VDDP

VRAL

PDO

VCOI

VSSP

U404

TC94A02F

VDALLOVDAR

IO7

IO6

VRARROTESTP

IO5

VSSR

VDD

CKS

1645141312111098765432

IO3

IO2

IO1

AD0

AD1

AD2

AD3

AD4

AD5

AD10OEAD11

AD6

AD9

AD8

49

IO4

IO3

IO2

48

VSS

47

IO1

46

IO0

45

AD15

44

AD16

43

WR

42

AD14

41

AD13

40

VSS

39

REQ

38

AD6

37

AD7

36

AD8

35

VDDT

34

AD9

33

AD10

AD11

AD12

32

GND

IO4

IO5

IO6

IO7

IO8

171819202122232425262728293031

CE1

AD7

AD12

AD13WECE2

AD14

AD15

AD16

1

NC

VDD

32

2-7

Tuner section (for B, EV version)

RGND FM-RF LOW

CUT

MIX

VCC AM-IF FM-IF GND AGC QUAD R/OUT L/OUT

OUT

IC602 TA2149BN

LPF2LPF1MPX-INDET-OUTIF-REQSTDSC-OUTAM-OSCFM-OSCAM-RFRF-VCCFM-RF/O

TU_R

AGND

TU_L

+12V

+5.6V

DGND

ST

CD_EN

PLL_DATA

PLL_CLK

PLL_PER

2-8

NOTES:

ALL OF THE VOLUME OF THE COMPONENT VOLTAGE

TESTED AT THE FM MODE. NO SIGNAL INPUT STATUS

Tuner section (for E,EN version)

AM LOOP

FOR FM TUNER MODEL

/FM S.SENS AM OSC OUT

NOTES:

ALL OF THE VOLUME OF THE COMPONENT VOLTAGE

TESTED AT THE FM MODE. NO SIGNAL INPUT STATUS

2-9

Printed circuit boards

Main board

(forward side) (reverse side)

2-10

Display board (forward side)

Power board (forward side)

(reverse side)

2-11

Tuner board for B/EV version

Tuner board for E/EN version

(forward side)

(reverse side)

2-12

Headphone board

(forward side) (reverse side)

Speaker jack board

2-13

Victor Company of Japan, Limited

AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.MB259SCH)

Printed in Japan

WPC