JVC AV-29J334/V Schematics

SCHEMATIC DIAGRAMS

FLAT COLOUR TELEVISION

YA18320049

AV-29J334/V

CD-ROM No.SML200503

BASIC CHASSIS

CW

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.YA193

2005/3

AV-29J334

/V

STANDARD CIRCUIT DIAGRAM

NOTE ON USING CIRCUIT DIAGRAMS

1.SAFETY

The components identified by the symbol and shading are
critical for safety. For continued safety replace safety ciritical
components only with manufactures recommended parts.

2.SPECIFIED VOLTAGE AND WAVEFORM VALUES

The voltage and waveform values have been measured under the
following conditions.

(1)Input signal : Colour bar signal

(2)Setting positions of
each knob/button and
variable resistor

(3)Internal resistance of tester

(4)Oscilloscope sweeping time

(5)Voltage values

Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.

: Original setting position
when shipped

: DC 20kΩ/V

: H

: V

: Othters

: All DC voltage values

20µs / div

5ms / div

Sweeping time is
specified

3.INDICATION OF PARTS SYMBOL [EXAMPLE]

In the PW board

: R209

R209

Type

No indication

MM
PP
MPP

MF
TF
BP

TAN

(3)Coils

No unit

Others

(4)Power Supply

Respective voltage values are indicated

(5)Test point

: Test point

(6)Connecting method

: Ceramic capacitor
: Metalized mylar capacitor

: Polypropylene capacitor
: Metalized polypropylene capacitor
: Metalized film capacitor
: Thin film capacitor
: Bipolar electrolytic capacitor
: Tantalum capacitor

: [µH]

: As specified

: B1

: 9V

: Connector

: Receptacle

: Only test point display

: Wrapping or soldering

: B2 (12V

: 5V

)

4.INDICATIONS ON THE CIRCUIT DIAGRAM

(1)Resistors

Resistance value

No unit : [Ω]

K
M

Rated allowable power
No indication : 1/16 [W]

Others : As specified

Type

No indication

OMR

MFR

MPR

UNFR

FR

Composition resistor 1/2 [W] is specified as 1/2S or Comp.

(2)Capacitors

Capacitance value

1 or higher : [pF]

less than 1

Withstand voltage

No indication : DC50[V]

Others : DC withstand voltage [V]

AC indicated
Electrolytic Capacitors

47/50[Example]: Capacitance value [µF]/withstand voltage[V]

: [kΩ]

: [MΩ]

: Carbon resistor

: Oxide metal film resistor

: Metal film resistor

: Metal plate resistor

: Uninflammable resistor

: Fusible resistor

: [µF]

: AC withstand voltage [V]

(7)Ground symbol

: LIVE side ground

: ISOLATED(NEUTRAL) side ground

: EARTH ground

: DIGITAL ground

5.NOTE FOR REPAIRING SERVICE

This model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : ( ) side GND and the
ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be
taken for the following points.

(1)Do not touch the LIVE side GND or the LIVE side GND and the
ISOLATED(NEUTRAL) side GND simultaneously. if the above
caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
the receptacle when, for example, the chassis is pulled out.

(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL
side GND or never measure with a measuring apparatus measure
with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND
and ISOLATED(NEUTRAL) side GND at the same time.
If the above precaution is not respected, a fuse or any parts will be broken.

Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.

NOTE
Due improvement in performance, some part numbers show
in the circuit diagram may not agree with those indicated in
the part list.
When ordering parts, please use the numbers that appear
in the Parts List.

)

(No.YA193)2-1

CONTENTS

SEMICONDUCTOR SHAPES .................................................................................................................................... 2-2

USING P.W.BOARD ........................................................................................................................................................ 2-2

BLOCK DIAGRAM ............................................................................................................................................................ 2-3

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM[AV-29J334/V](1/2) ....................................................................................................... 2-5

MAIN PWB CIRCUIT DIAGRAM[AV-29J334/V](2/2) ....................................................................................................... 2-7

CRT SOCKET PWB CIRCUIT DIAGRAM .........................................................................................................................2-9

FRONT CONTROL PWB CIRCUIT DIAGRAM .............................................................................................................. 2-11

PATTERN DIAGRAMS

MAIN PWB PATTERN ...................................................................................................................................................... 2-13

CRT SOCKET , FRONT CONTROL PWB PATTERN ................................................................................................... 2-15

VOLTAGE CHART ......................................................................................................................................................... 2-17

WAVEFORMS ................................................................................................................................................................... 2-18

SEMICONDUCTOR SHAPES

TRANSISTOR

BOTTOM VIEW FRONT VIEW TOP VIEW

CHIP TR

E
C
B

ECB

B

(G)E(S)C(D)

ECB

ECB

C

BE

IC

BOTTOM VIEW FRONT VIEW TOP VIEW

OUT
E

IN

IN OUTE

1 N

1 N

CHIP IC

TOP VIEW

1

N

1

N

USING P.W. BOARD

P.W. BOARD ASS'Y NAME AV-29J334/V

MAIN P.W. BOARD SCW-1079A-CK

CRT SOCKET P.W. BOARD SCW-3009A-CK

FRONT CONTROL P.W. BOARD SCW-8009A-CK

1

N

2-2(No.YA193)

BLOCK DIAGRAM

VIDEO-1

S_VIDEO

INPUT

VIDEO-2

COMPONENT

VIDEO

INPUT

OUTPUT

VIDEO-3

INPUT

(FRONT)

AC IN

J801

S-VIDEO

J802

J803

J804

VIDEO

J802

VIDEO

J803

AUDIO-L

J804

AUDIO-R

CB

CR

MAIN PWB

IC701 MAIN MICRO COMPUTER/

IF㨯VIDEO㨯RGB㨯SYNC㨯DEF. PROCESS

108,109

SCL
SDA

TU001

TUNER

SW1

Y1

C1

CVBS1

V

L1

L

R1

R

V2/Y

Y

PB

PR

L2

L

R2

R

V-OUT

L-OUT

L

R-OUT

R

V3

L3

R3

TV/VIDEO

VOL+

IF

REMOCON
RECEIVER

VOL- CH+ CH- MENU

S901

POWER SW

F901

IC702

MAIN MEMORY

SF101

SAW FILTER

SF102

SAW FILTER

POWER

LED

127,128

3, 6

IC481

ROTATION

FRONT CONTROL PWB (1/2)

111

98,99

119

122

29, 30

24, 25

97

79

80

78

55

58

59

51

49

50

56

57

34

35

48

36

37

SCL1, SDA1

SCL0, SDA0

ROTATION

LED

REMOTE

KEY_IN

SV_DET

SIF IN

VIF IN

Y

PB

PR

V2

Y/V1

C1

V3

L1

R1

L2

R2

L3

R3

VOUT

LOUT

ROUT

ROTATION

2, 8

SIF DETECT

VIF DETECT/AGC/AFT

SOUND TRAP

VIDEO

SELECT

AUDIO

SELECT

COIL

I2C

BUS

I/O

PORT

MICRO

COMPUTER

VIDEO

C

IDENT.

Y

COMB FILTER
Y DELAY ADJ.

AUDIO

SELECT

COLOUR

DEMOD

AUDIO

CONTROL

D901
RECT

IC921

POWER

REG

DIGITAL SIGNAL PROCESS

PEAKING SCAN

VELOCITY MOD.

U/V DELAY

SKIN TONE

U/V TINT

SATURATION

B-Y R-Y

BASE-BAND
DELAY LINE

SYNC

SEP.

OUT_L

OUT_R

T921

SW

TRANSF.

PC901

VOLTAGE

FEEDBACK

60

61

RRGGB

B

RGB MATRIX

&

GAMMA

V. DRIVE

PARABOLA GENERATE

H. DRIVE

1.8V REG

1.8V REG

IC972

3.3V REG

IC975

5V REG

IC973

12V REG

L951

IC951

ERROR

AMP

OSD
SELECT

IC974

IC976

3.3V_STB

5V

ROUT

GOUT

BOUT

SVM

VDA,VDB

EWD

HOUT

1.8V

V1.8V

8V

12V

32V

85

86

87

65

22, 23

21

67

9

3

1

IC451

PARABOLA AMP

B1

IC601

AUDIO AMP

IC401

V. OUT

PARABOLA DRIVE

T522

FBT

Q522

H. OUT

BASS

20

13

23

5

Q461

FOCUS

SCREEN

EHV

R

G

IC351

B

RGB OUT

Q208,Q209

VM OUT

CRT SOCKET
PWB

J805

BASS SPEAKER OUT

FRONT CONTROL
PWB (2/2)

V

DEF YOKE

H

DY01

V01

VM
COIL

J801

HEADPHONE

SPEAKER L

SPEAKER R

2-4(No.YA193)(No.YA193)2-3