JVC TH-A9 Diagram

TH-A9

1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

2. Alterations of the design or circuitry of the product should not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturer`s warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

3. Many electrical and mechanical parts in the products have special safety-related characteristics. These

characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.

4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after re-assembling.

5. Leakage currnet check (Electrical shock hazard testing) After re-assembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock. Do not use a line isolation transformer during this check.

Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).

Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to eachexposed metal part, particularly any exposed metal part having a return path to the chassis, and meausre the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).

0.15 F AC TYPE

1500 10W

Good earth ground

AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity)

Place this probe on each exposed metal part.

!

1. This equipment has been designed and manufactured to meet international safety standards.

2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.

3. Repairs must be made in accordance with the relevant safety standards.

4. It is essential that safety critical components are replaced by approved parts.

5. If mains voltage selector is provided, check setting for local voltage.

Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.

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. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Except the J and C version)

2-2

Block diagrams

Overall block diagram

J1103

68 7

453

IC153

6ch

IC403

DSP

2 1

Volume

SYSTEM

CONNECTOR

IC406

DSP

Micom

J1101

L

IC151

IC401

AUX

IN

R

Input

Select

CODEC

TH-A9

LVA10199-A1

System control/Video IO board

J602

C

Q631

IC401

Unit CPU

S-VIDEOOUT

Y

Q621

J601

CONPOSITE VIDEO OUT

Q641

CN601

CN503

IC554

Video

Encoder

IC501AVDecoder

J802

AV COMPULINK2

CN502

M9V

D3V

D5V

CN501

Audio IO/DSP board

LVA10201-A1

TUNER UNIT

CN801

CN803

CN402

CN805CN804

IC801

CN807

CN802

Micom

System

CN401

CN806

CN812

CN811

CN810

CN106

W812

W811

W810

LED

Disc

SW

Door

SW

Door

Motor

LVA10199-A3 LVA10199-A4 LVA10199-A5

DVD servo board

LVB10244-A1

IC101

Front End

Processor

CN101

FXL-V6T

IC301

Optical

IC201

ADSC

Disc

Controller

IC271

Power supply board

LVA10200-A1

P901

T901

Trans

AC IN

CN961

CN971

FL indicator board

LVA10200-A2

CN701

CN702

IC701

Display

Micom

FL Display

IC711

Receiver

Remocon

2-3

TH-A9

Overall block diagram

TO

CN601 OF

LVA10199-A1

136

CN503

Y OUT

CV OUT

C OUT

IC554

MC44724AVFU

VIDEO ENCODER

(SYSTEM)

31,32

34-36

39-46

49, 50

29

STREAM DATAS

FROM/TO

CN801 OF

LVA10199-A1

(SYSTEM)

5

7139

11

1

CN502

IC503

TC74VHC00FT

HSYNC

VSYNC

VD 0-7

158

142,143,145

148,150,152

154,155,157

159 5 8

IC505

16M SDRAM

K4S161622D-TC80

177

178

15

IC501

AV DECODER

13

8-11

2-4,6

ZIVA3-PE0

206

OSC

27MHz

IC502

3

NAX0393-001X

IC504

WAITDEC

CPU DATAS

16M SDRAM

K4S161622D-TC80

OSC

1MHZ

FEP

(Front End Processor)

53,54

57,60

LVB10244-A1

ODC

X301

100

NAX0375-001X

IC101

AN8702FH

LD

59, 60

OR GATE

AND GATE

IC311,IC312

IC301

27

85

MN103S13BDA

(Optical Disc Controller)

FM +/-

CN101

WAIT

TC7SH08FU

TC7SH32FU

IC201

ADSC

MN67706ZY

51, 52

3, 17

9, 10

IC271

DRIVER

T+/-

34, 35

IC321,IC322

TC7WH74FU

TC74VHC00FT

84

26

M56788FP-W

31, 32

F+/-

LSI RST

11

50

UNIT CPU

9

CRYSTAL

WAIT

CPU DATAS

1

IC401

MN102L25GHW1

7

23

X401

13.5MHz

CSDEC

CPU DATAS

IC402

16M ROM

KSN5C1000D-J1008

D3.3V

D5V

763

CN501

M9V

2-4

CN10 OF

FROM / TO

LVA10132-01A1

(FXL-V6T)

DVD 5V

DVD 3.3V

CN803 OF

FROM / TO

LVA10199-A1

DVD 9V

(SYSTEM)

Block diagram (power supply section)

FROM/TO

CN701 OF

LVA10200-A2

(FL)

FROM/TO

CN807 OF

LVA10199-A1

(SYSTEM)

FROM/TO

CN808 OF

LVA10199-A1

(SYSTEM)

TH-A9

F1 1

CN971

LVA10200-A1

Q951

FL SW

CN972

FAN MOTOR

1

P. O N

Q956

+12V 3

CN951

F2

-VDISP6B5V5B5V

2

3

D5V3DVDD5V2DOORM9V7DVDM9V 1

CN961

31

IC953

Q953

-VDISP

B5V REG.

NJM75M05FA

Q954

B5V7DVD P.ON2-12V1INH

8

6

Q955

Q959

Q977

2

4

D957

IC951

D5V REG.

PQ05RD21

D956

Q958

Q960

Q961

1

71

8

T901

TRANSFORMER

L901

F901

AC IN

9

13

QQS0097-001

3

5

4

1

REG.

IC901

SWITCH

STR-G6651

12

16

14

2-5

TH-A9

Block diagram (audio input/output section)

FROM/TO SYSTEM

LOUT1

ROUT1

LOUT2

ROUT2

LOUT3

ROUT3

MUTE

VOL_STB

VOL_DT

VOL_CK

AMP

IC521,531

BA125218F-XE

AMP

IC561,571

BA125218F-XE

AMP

IC581,591

BA125218F-XE

MUTE CTL

Q2501 Q2502

MUTE CTL

Q2521

MUTE CTL

Q2561

MUTE CTL

Q2581

6CH VOLUME

M62446FP-X

15

13

9

8

11

16

39 40 41

INPUT SELECT

IC151

BU4066BCF-X

IC153

31

32

34

35

33

36

MUTE CTL

Q1131

MUTE CTL

Q1133

MUTE CTL

Q1135 Q1137

AMP

IC158

AMP

IC159

AMP

IC160

LVA10201-A1

J1103

SYSTEM CONNECTOR

7

68

453

2 1

CN401

5

4

8

6

10

11

FROM/TO CN806 OF LVA10199-A1 (SYSTEM)

SW.P.ON

S MUTE

L

R

TUNERR

TUNERL

LIN+

LIN–

RIN+

RIN–

AMP

IC501

IC510,511

BA125216F-XE

8,10

11

9

2,4

5,6

12,13

1

3

AUX/TUNER

INPUT SELECT

SW Q1251 Q1252

2

1

AUX

TUNER

RLJ1101

AUX IN

2-6

Block diagram (DSP section)

LVA10201-A1

TH-A9

DSPCLK

DSPSTATUS

DSPCOMMAND

DSPREADY

FROM/TO CN804 OF LVA10199-A1 (SYSTEM)

VOL_STB

VOL_DT VOL_CK

IEC958

D5V D5V

CN402

5 6 7 8

11

15 14

3 2 1

34

DSP

IC403

TC9446F-014

RAM

IC404

W24L011AJ-15X

D3V

13

IC407

PQ3DZ53X

99

1,3-7

83,85-89

84

16-18,22 25,26

VDD

OSC X401

24.576MHZ

45-50,53

UPD784215AGC103

18-20,22

4-9

Q403

40,42,43

DSP MICOM

71

17

CODEC

AK4572VQ

IC406

IC401

CN403

TX

2

RX

3

TEST

5

41

37,38,94

11

17

21

84

88

27 28 25 26 23 24

30 29 32 31

OSC

X402

6.14MHZ

Q401

Q402

MUTE

LOUT1 ROUT1 LOUT2 ROUT2 LOUT3 ROUT3

LIN+ LINRIN+ RIN-

VOL_STB VOL_DT VOL_CK

FROM/TO AUDIO

Block diagram (video input/output section)

FROM/TO SYSTEM

AVVLR

FROM/TO CN503 OF LVB10244-A1 (DVD SERVO)

C

CV

CN601

Y

6

3

1

Q631

Q621

Q641

LVA10199-A1

3

4

J802 AV COMPULINK2

C

J602 S-VIDEO OUT

Y

J601 COMPOSITE VIDEO OUT

2-7

TH-A9

Block diagram (system control section)

LVA10199-A1

FROM/TO TUNER UNIT

FROM/TO CN502 OF LVB10244-A1 (DVD SERVO)

FROM/TO CN702 OF LVA10200-A2 (FL)

DOOR MOTOR

TUR

STR TUND TUMU

TUCK TUDT TUCE

IEC958

CS3 /NTSC

RSTE

SCK

RXD U2SDT S2UDT SCLK0

REQ

BUSY

CPURST

INITIAL

DATA OU T

DATA I N CLOCK

BUSY

RESET

AVVCR

TUL

CN805

12 10

15 14 13

3 2 1

CN801

1 5 7

9 11 13 16 17 18 19 20 21

CN802

8

7

6

5

4

2

1

CN106

2

1

MOTOR DRIVER

7

IC108

3

TA8409S

21-26

34,35,38

42,44

SYSTEM MICOM

MN101C49GHT1

30,45-49

39,40 4-6 80 59 62,64

1,9

96

IC801

Q802 Q805

CN806

TUNER R

10

TUNER L

11

SWMUTE

4

FROM/TO CN401 OF

TO VIDEO

LVA10201-A1 (AUDIO)

FROM/TO CN402 OF LVA10201-A1 (DSP)

FROM/TO CN961 OF LVA10200-A1 (POWER SUPPLY)

FROM/TO CN951 OF LVA10200-A1 (POWER SUPPLY)

Q804 Q807

OSC

RESET

IC-PST9140-T

1

EEPROM

2 3

BR93LC46-W

4

X801 8MHz

IC803

IC804

BACKUP DETECT

Q818

89

1369-74

85

90

33 1

54 53 52 51

18-20 92-94,98,99

5

2 1

CN804

1 2 3 5 6 7 8

9 11 14 15

CN807

1

CN808

1

2

8

SW P.ON

AUX TUNER

VOL_CK VOL_DT VOL_STB DSPCLK DSPSTATUS DSPCOMMAND DSPREADY DSPRESET IEC958 D5V D5V

D5V

AVVLR

P. O N DVD P.ON

INM

LVA10199-A3

DOOR SW

S8021

LVA10199-A4

DOOR SW

S8022

W810

3

1

2

CN810

CN811W811

Block diagram (FL section)

LVA10200-A2

CN702

INITIAL

FROM/TO CN802 OF LVA10199-A1 (SYSTEM)

FROM/TO CN971 OF LVA10200-A1 (POWER SUPPLY)

DATA OU T

DATA IN

CLOCK

BUSY

RESET 2

AV VCR 1

B5V

-VDISP 3 F2 F1

8 7 6 5 4

CN701

6B5V B5V 5

2 1

1 2

LVA10199-A5

W812

1 2

DISC LED D721-723

1

3

2

OSC X701

6MHz

25-2760-63

13

Q703

44-48,68

1, 2

61. 62

DISPLAY MICOM

53 50

MN17322DG

23

FL DISPLAY

IC701

DI701

G1-G13 P1-P36

KEY0

K01

KEY0-3

K01-03

KEY1

4958REMOCON

Q712

Q711

POWER SWITCH

S712

OPERATION

SWITCH

S701-710

EJECT

SWITCH

S711

STANDBY

INDICATOR

D733

REMOTE CTL

1

RECEIVER

IC711

GP1U271X

CN812

2-8

TH-A9

Standerd schematic diagrams

System control circuit

7

CN806 CN804 QGF1016C1-17 QGF1016C1-15

Q1181 KTC3203/OY/-T

R1181

10

R1182

2.2K

D1184

MTZJ7.5C-T2

D1185

MTZJ7.5C-T2

R1183

R1184

2.2K

10

6

QGB2027M4-22S

CN801

0.01

C801

R847

R848

QGB2027M3-10S

CN803

CN807

QGB2011MP-08

R849

R850

R851

R853

R854

R855

R856

R857

R811

C802

5

4

VECS

1K

VENT

1K

VERST

1K

VECK

220

VEDO

220

U2SDT

1K

S2UDT

1K

SCLK0

1K

REQ

1K

BUSY

1K

CPU_RST

100

0.01

3

C837

0.01

QGB2011MP-08

CN808

2

QGB1216J1-08S

CN802

R861

R862

R863

R864

R865

R866

EP806

QNZ0136-001Z

1K

DICS

DIDI

DIDO

DICK

DIBUSY

DIRST

IC805 NJM78M05FA

100/16

C815

1

Q1182 KTA1271/OY/-T

C1184 47/25

C1185 47/25

C1186 100/10

C1187 100/10

X10K

10K

R831

R832

QAX0246-001Z

R807R806

100k

10K

R835

R833

C814 100/10 C811

0.01

D807

1SS133-T2

C806

Q815

R888

R889

100K

D808 D809

1SS133-T2 1SS133-T2

R834

DOOR1

DOOR2

DOOR3

LOCK

X801

DSP_COM

DSP_STAT

DSP_CLK

S2UDT

U2SDT

SCLK0

BUSY

CPU_RST

100/10

C816

TU_R

TU_L

47000/5.5

Q816

R813

330

AUDIO_L

MTZJ4.7B-T2

R891

C807

SW_P.ON2

AUDIO_R

220/6.3

R892

VOL_CK

VOL_DT

VOL_STB

DSP_CLK

DSP_STAT

IC801

MN101C49GHT

VERST

DSP_RDY

DSP_RST

C831

0.01

EP801 QNZ0136-001Z

SW_MUTE

VENT

MT0

MT1

DSP_COM

SW_P.ON

VEDO

MTS

VECK

VS3

VS1

DIDO

DIDI

DICK

DICS

DIRST

R817 22K

Q801 KRC107M-T

C823

0.001

C824

DOOR3

W811 QGA2001C1-02

S8022 QSW0851-001

SMUTE

SW_MUTE2

DSP_RST

DSP_RDY

SMUTE

VOL_CK

VOL_DT

VOL_STB

0.047

C812

RDS_ST

DIBUSY

R896 10K

Q818 KRC111M-T

R893

R894

VECS

100K

R816

REQ

D812

1K

R895

R890

0.01

SELU1E56BM

D721

C721

TU_CE

TU_CK

TU_DT

TU_MUT

TUNED

STEREO

RDS_CK

RDS_DT

IC804 BR93LC46-W

R818

4.7K

C822

2.2/50

D811 1SS133-T2

X

D723

W812

QGA2001C1-03

CN812

QGA2001C1-03

Q712

KRC102M-T

R819

IC803 IC-PST9140-T

C821

0.01/16

0.01

C722

SELU1E56BM

D722

220

R741

470K

C813 100/10

X

L1302

R1304

X

L1301

6.8K

Q805

KTA1267/YG/-T

22K

R823

R822 R824 22K

SMUTE

Q802 KRC102M-T

C1353 100/16

150

R1807

1K

1SS133-T2

D1353

R1303

1K

TUNED

STEREO

10/16

C199

SMUTE2

0.22/50

C826

SW_MUTE SW_P.ON

Q814

KTA1271/OY/-T

R873

3.3K

Q813 KRC104M-T

IC108

X

R1808

1.5

C1805

MT1

LOCK

K1801

TU_MUT

IC191

SAA6588

0.1

C194

D818

R825

100/16

C1802

C193

560P

470K

C191

R192

82P

QAX0263-001Z

Q806

R874

3.3K

TA8409S

X

6.2

R1805

R1804

M108 QAR0100-001

C196

R191

X191

Q803

10/16

C1801

CN106 QGA2501C1-02

R1305

R1306

C1803

1.5

2.2/50

1K

XX

C1302C1301

220

R742

DOOR2

S8021 QSW0851-001

TU_R

DOOR1

CN810CN811 QGA2001C1-03QGA2001F1-02

W810 QGA2001C1-03

R1301

R1302

TU_L

CN805 QGF1205C1-15

Q1351 KTC3203/OY/-T

R1351

4.7

D1351 1SS133-T2

1K

100/10

C838

C832

0.01

EP802 QNZ0136-001Z

MTS

C1352

SW_P.ON2

D820

C828 100/10

10/50

R821

4.7

1SS133-T2

R1352

D1352

MTZJ6.8A-T2

R876

3.3K

Q817

KTA1271/OY/-T

R875

3.3K

C829 100/16

NTSC/PAL

AVVLR

AUDIO_L

AUDIO_R

VS1

VS3

V5V

V12V

AGND

C1351

10K

C195

330P

0.047

C192

C197

47P

C827

MT0

RDS_ST

R1802 15K

R1803 47K

TU_DT

TU_CK

RDS_DT

RDS_CK

R872

3.3K

1SS133-T2

KRC102M-T

R1806 18K

C835

C836

TU_CE

R193

R194

Q804 KRC102M-T

KTA1271/OY/-T

R871

3.3K

D871

Q811

100P

EP805 QNZ0136-001Z

10K

Q807 KRA102M-T

Q812

Q1801 KRC103M-T

Digital (audio) signal

Audio signal

BCDEFGH I JA

2-9