JVC THV-70-R Service manual

SERVICE MANUAL

DVD DIGITAL CINEMA SYSTEM

TH-V70R

Area suffix

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

TH-V70R

Contents

SP-XSV70 SP-XCV70SP-XSV70 SP-XSV70SP-XSV70

SP-PWV70 XV-THV70R

Safety precautions Preventing static electricity Important for laser products

1-2 1-4 1-5

Disassembly method Adjustment method Description of major ICs

1-6 1-21 1-22~55

No.21108

Jul. 2002

Block diagrams

Overall block diagram

5

AV COMPULINK2

J592

J1103

68

7

453

2 1

L

J1101

AUX IN

SYSTEM

CONNECTOR

TH-V70R

R

6CH

IC153

VOLUME

SDRAM

CN802

DSP

IC403

CN401

IC108

DOOR MOTOR

IC406

DRIVER

IC404

4

3

2

LVA10308-A1

Main board

J691

SCART

TERMINAL

B

G

IC509

FLASH

IC505

R/C

IC601

CN803

CN502

ROM

DRAM

Y

VIDEO

C

DRIVER

IC501

PANTERA-2

J601

S-VIDEO OUT

J601

Y

CN503

COMPOSITE VIDEO OUT

Compulink board

CN801

LVA10308-A3

CN592

CN815

B/E/EN

IC191

CN972

FROM/TO

version only

RDS

DSP/Audio board

LVA10309-A1

TUNER UNIT

CN805 CN806

IC801

MICOM

SYSTEM

DSP

CN813

W812

CN814

CN106

MICOM

IC151

INPUT

IC401

W801

CN812

W802

SELECT

CODEC

Key

switch

IC871

REMOCON

LED

DISC

DOOR

DETECT

DOOR

MOTOR

LVA10308-A2

LVA10308-A5

SWITCH

LVA10308-A4

D5V,DVD 5V

DVD3.3V

P.ON,B5V

CN101

DVD servo board

LVA10311-A1

IC451

EEPROM

IC101

IC401

FRONT END

PROCESSOR

CN201

UNIT CPU

IC201

DRIVER

IC301

CN202

SODC

IC251

MOTOR

DRIVER

SPINDLE

P901

+12V,-12V

REG.

DOOR M9V

T901

Trans.

AC IN

Fan

motor

Front board

B5V

F1,F2

-VDISP

LVA10320-A1

CN701

IC701

DISPLAY

IC711

REMOCON

MICOM

DI701

FL DISPLAY

1

EXL-V9-1

DVD traverse

mechanism

EXL-V9-1

DVD traverse

mechanism

AB C

FLM-FD1-1

DVD loader

mechanism

2-1

TH-V70R

System control section

FROM/TO TUNER UNIT

5

B/E/EN version

FROM/TO CN503 OF LVA10311-A1 (DVD servo)

SWPHOTO

4

3

SSPCLK1B

SSPOUT1B

TO Door motor

FROM/TO CN701 OF LVA10320-A1 (FL display)

REMOCON

2

TUR

TUL

RDS

TUDTO

TUCK

TUDTI

TUCE

SPDIF

DISKSTP

FLINT

SSPIN1A

FLCS-

CPURST

RESET CLOCK

DATA IN

INITIAL

LVA10308-A1

CN805

8 6

10

4 3 2 1

CN801

14

1 16 17 18 19 21 23 25

CN106

7

1

MOTOR

3

2

DRIVER

CN802

8

9 10 11 12

LVA10308-A5

IC871

REMOCON

D8721 D8722

DISC LED

LED board

LVA10308-A4

S551

DOOR DETECT

SWITCH

Open/Close board

RDS DECODER

IC108

IC191

X191 OSC

4.322MHz

70,72-74

5,21-26

83

1,9

56,57

18,20 91,92

1 2

5

2 3

FROM/TO CN401 OF LVA10309-A1 (DSP)

TUNER R

22

TUNER L

21

SMUTE

28

IEC958

5

SW P.ON

27

AUX

29

TUNER

30

OUT L

24

OUT R

26

VOL_CK

14

VOL_DT

13

VOL_STB

12

DSPCLK

11

DSPSTATUS

10

DSPCOMMAND

9

DSPREADY

8

DSPRESET

7

D5V

2

D5V

1

8,9,1016

27

29 67,68

76

IC801

SYSTEM MICOM

50

79,80

4,48 59 62,64

Q802 Q805

SMUTE

85

8,9

89 90

30

Q804 Q807

SW P.ON

13

33 1

34,35 42-47

36

2

X801

OSC

8MHz

IC803

RESET

Q816

Main board

CN806

Japan version

AUDIO_R AUDIO_L

Q8712 Q8713

LED CTL

W812CN812

CN814W802

Q8711

1

REM +B

2

CTL

5

2 3

Q818

BACKUP

Q803 SAFETY DETECT

AVVLR RGB/NTB

D5V P. O N

DVD P.ON

B5V

+12V

-12V

TO Audio I/O

TO Video I/O

TO Power supply

1

2-2

LVA10308-A2

S501-S510

Key switch

CN813W801

2

3

Switch board

AB CD

TH-V70R

Audio input/output section

LVA10309-A1

LOUT1

ROUT1

5

LOUT2

ROUT2

LOUT3

ROUT3

FROM/TO DSP

MUTE

4

VOL_STB

VOL_DT VOL_CK

A5V

IC531

Amp.

IC561

Amp.

IC581

Amp.

Q2501 Q2502

Mute control

Q2521

Mute control

Q2561

Mute control

Q2581

Mute control

15

13

9

IC153

8

6CH

VOLUME

11

6

39 40 41

INPUT SELECT LIN+ LIN–

RIN+

IC510,511

Amp.

RIN–

L

J1101 AUX IN

3

R

2

1

4

3

8

9

10

11

IC151

31

32

Q1131

Mute control

34

35

Q1133

Mute control

33

36

Q1135 Q1137

Mute control

13

5

6

12

IC158

Amp.

IC159

Amp.

IC160

Amp.

Mute control

Q1252

Mute control

Q1251

Q1252

Mute control

J1103 SYSTEM CONNECTOR

7

68

453

2 1

FROM/TO CN806 OF LVA10308-A1 (System control)

CN401

5

SW.P.ON

4

S MUTE

8

OUT_L

6

OUT_R

12

A5V

10

TUNERR

11

TUNERL

3

AUX

2

TUNER

DSP section

LVA10309-A1

CN401

IEC958

D5V D5V

21 22 23 24

IC408

27

IC409 Digital

input

IC410 Digital output

31 30

20 19 18

34

IC403

DSP

31

IC404

SDRAM

71

IC407

D3V

54

IC402

A3V

VDD

VDDA

99

24.576MHZ

1,3-7

83,85-89

84

X401 OSC

46-50,53

16,18-20,22

DSPCLK

DSPSTATUS

DSPCOMMAND

DSPREADY

2

FROM/TO CN806 OF LVA10308-A1 (System control)

VOL_STB

VOL_DT VOL_CK

Q403

40,42,43

IC406

DSP MICOM

71

17

IC401

CODEC

41

37,38 94

64,66,67

41-43

11

17

21

84

88

27 28 25 26 23 24

30 29 32 31

X402

OSC

6.14MHZ

Q401

Q402

1

CN403

2 3 5

TX RX TEST

FROM/TO Audio input/output

MUTE

LOUT1 ROUT1 LOUT2 ROUT2 LOUT3 ROUT3

LIN+ LINRIN+ RINA5V VOL_STB VOL_DT VOL_CK

AB C

2-3

TH-V70R

Video output section

LVA10308-A1

S802

VER/HOR

SW

5

S691

TO System control

RGB/NTB

AVVLR

RGB/YC

SW

LVA10308-A3

CN592

42

13

CN815

J592 AV COMPULINK2

4

B

7

G

11

R/C

CN803

CrOUT

10

CbOUT

12

FROM CN502 OF LVA10311-A1 (DVD servo)

3

COUT

YOUT

14

16

B/E/EN/EE version

16

14

6

11

8

2

DRIVER

21

23

IC601

VIDEO

31

25

28

33

15

19

COMPOSITE/Y

C

Y

J601 COMPOSITE VIDEO OUT

J601 S-VIDEO OUT

J691 SCART TERMINAL

FL display section

LVA10320-A1

27

29

39

28

30

40

Q710

Q712

Q721

DIMMER

Q711

Q713

Q722,Q723

DIMMER

FROM/TO CN802 OF LVA10308-A1

2

(System control)

REMOCON

INITIAL

DATA IN

CLOCK

RESET

-VDISP

CN701

12 11 10

9 8

-12V

7

D5V D5V

6

B5V

5

3

F2

2

F1

1

-12V

B5V

1

IC711

Remocon

receiver

Q709

OSC X701

8MHz

1, 2

61. 62

2,3,5,26

100

9,10

31

IC701

DISPLAY MICOM

DI701

FL DISPLAY

G1-G14 P1-P35

D701

POWER LED

HORIZONTAL

D711

POWER LED

VERTICAL

D702-D710

KEY LED

HORIZONTAL

D712-D720

KEY LED

VERTICAL

2-4

AB CD

Power supply section

TO CN701 OF

LVA10320-A1

(FL display)

TO CN503 OF

LVA10311-A1

(DVD servo)

TO CN502 OF

LVA10311-A1

(DVD servo)

TO CN401 OF

LVA10309-A1

(DSP)

TH-V70R

F21F1

5

2

CN802

-VDISP6D5V

B5V15M5V

-12V

3

5

7

CN801

S5V

21

CN803

D5V

23

S3.3V

D3.3V

17

19

M9V

25

LVA10308-A1

Q964

4

Q953

-VDISP

31

2

4

IC953

3

Q951

FL SW

IC951

B5V REG.

1

D5V REG.

Q965

DVD5V SW

Q954,Q955

A7V

18

CN806

E.VOL

Q1181

D956

Q958

+7V

D5V

1

D5V

2

A12V

A-12V

15

16

A5V19A-7V

20

A5V

IC805

Q959

Q960

E.VOL

Q1182

D957

Q961

-7V

FAN MOTOR

1

CN972

Q957

71

8

9

13

12

T901

2

D901

L901

F901

P901

1

AC IN

3

1

IC901

SWITCH

5

4

REG.

TRANSFORMER

16

14

FROM/TO

System

P. O N

control

B5V

DVD-P.ON

A5V

DVD3.3V

DOOR M9V

AB C

2-5