JVC AV-14FN15/P, AV-14FT15/P Schematics

SCHEMATIC DIAGRAMS

COLOR TELEVISION

YA157200411

AV-14FN15/P,
AV-14FT15

CD-ROM No.SML200503

/P

BASIC CHASSIS

CW

[AV-14FN15/P][AV-14FT15/P]

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.YA251

2005/3

AV-14FN15/P, AV-14FT15

/P

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.YA251)2-1

CONTENTS

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

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

BLOCK DIAGRAMS .....................................................................................2-3

[AV-14FN15/P] ............................................................................................................................................ 2-3

[AV-14FT15/P] ............................................................................................................................................ 2-5

CIRCUIT DIAGRAMS

MAIN PWB CIRCUIT DIAGRAM [AV-14FN15/P] (1/3) ................................................................................ 2-7

MAIN PWB CIRCUIT DIAGRAM [AV-14FN15/P] (2/3),(3/3) ........................................................................ 2-9

MAIN PWB CIRCUIT DIAGRAM [AV-14FT15/P] (1/3) ................................................................................2-11

MAIN PWB CIRCUIT DIAGRAM [AV-14FT15/P] (2/3),(3/3)....................................................................... 2-13

PATTERN DIAGRAMS

MAIN PWB PATTERN [AV-14FN15/P] ...................................................................................................... 2-15

MAIN PWB PATTERN [AV-14FT15/P] ...................................................................................................... 2-17

VOLTAGE CHARTS .................................................................................. 2-19

WAVEFORMS ............................................................................................ 2-20

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-14FN15/P AV-14FT15/ P

MAIN P.W . BOARD SCW -1384A-H2 SCW -1387A-H2

1

N

2-2(No.YA251)

BLOCK DIAGRAMS

[AV-14FN15/P]

VIDEO-1

INPUT

VIDEO-2

INPUT

(FRONT)

J801

VIDEO-1

AUDIO-1

J806,J807

VIDEO-2

AUDIO-2

MAIN PWB

IC701 MAIN MICRO COMPUTER/

IF.VIDEO.RGB.SYNC.DEF. PROCESS

108,109

SCL
SDA

TU001

TUNER

V1

L1

V3

L3

IF

IC702

MAIN MEMORY

SF102

SAW FILTER

127,128

98,99

119

24, 25

97

58

51

49

SCL1, SDA1

SCL0, SDA0

PW_LED

REMOTE

KEY_IN

VIF IN

V1

V3

L1

SIF DETECT

VIF DETECT/AGC/AFT

SOUND TRAP

VIDEO

SELECT

I2C

BUS

I/O

PORT

MICRO

COMPUTER

VIDEO

C

IDENT.

Y

COMB FILTER
Y DELAY ADJ.

COLOUR

DEMOD

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.

RRGGB

RGB MATRIX

&

GAMMA

V. DRIVE

H. DRIVE

B

ROUT

GOUT

BOUT

OSD
SELECT

VDRA+,VDRB-

HOUT

85

86

87

22, 23

67

R

G

IC351

B

RGB OUT

MAIN PWB
(CRT SOCKET)

J809

HEADPHONE

V01

OUTPUT

J802

VIDEO_OUT

AUDIO_OUT

AC IN

V_OUT

L_OUT

REMOCON

RECEIVER

VOL+

VOL- CH+ CH- MENU

S901

POWER SW

F901

POWER

LED

L3

34

48

VOUT

39

QssO/AmO/AudeEm

AUDIO

SELECT

AUDIO

SELECT

D901
RECT

IC921

POWER

REG

AUDIO

CONTROL

T921

SW

TRANSF.

A_L

62

IC972

3.3V REG

IC975

5V REG

IC973

12V REG

3

IC974

1.8V REG

IC976

1.8V REG

L951

IC601

AUDIO AMP

1.8V

V1.8V

3.3V_STB

5V

8V

12V

32V

5

SPEAKER L

SPEAKER R

1

IC401

V. OUT

H. OUT

FOCUS

B1

T522

FBT

SCREEN

EHV

Q522

5

V

DY01

DEF YOKE

H

2-4(No.YA251)(No.YA251)2-3

[AV-14FT15/P]

VIDEO-1
INPUT

J801

MAIN PWB

IC701 MAIN MICRO COMPUTER /

IF.VIDEO.RGB.SYNC.DEF. PROCESS

108,109

SCL
SDA

TU001

TUNER

CVBS1

V

L1

L

R1

R

IF

IC702

MAIN MEMORY

SF102

SAW FILTER

127,128

102,103

98,99

119

24, 25

97

58

51

49

50

SCL1, SDA1

SCL0, SDA0

TIMER

PW_LED

REMOTE

KEY_IN

VIF IN

Y1/CVBS

V3

L1

R1

SIF DETECT

VIF DETECT/AGC/AFT

SOUND TRAP

VIDEO

SELECT

I2C

BUS

I/O

PORT

MICRO

COMPUTER

VIDEO

C

IDENT.

Y

COMB FILTER
Y DELAY ADJ.

COLOUR

DEMOD

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.

RRGGB

RGB MATRIX

&

GAMMA

V. DRIVE

H. DRIVE

B

ROUT

GOUT

BOUT

OSD
SELECT

VDRA+, VDRB-

HOUT

85

86

87

22, 23

67

R

G

IC351

B

RGB OUT

MAIN PWB
(CRT SOCKET)

V01

J809

HEADPHONE

OUTPUT

VIDEO-2
INPUT
(FRONT)

AC IN

J804

VIDEO

J806

VIDEO

J807

AUDIO-L

J808

AUDIO-R

AUDIO

34

L3
R3

35

AUDIO

V_OUT

V-OUT

L-OUT

L

R-OUT

R

V3

L3

LED

POWER

LED

R3

POWER SW

REMOCON
RECEIVER

VOL+

VOL- CH+ CH- MENU

S901

TIMER

F901

48

L_OUT

36

R_OUT

37

SELECT

SELECT

AUDIO

CONTROL

D901
RECT

IC921

POWER

REG

A_L

A_R

T921

SW

TRANSF.

PC901

VOLTAGE

FEEDBACK

60

3

13

L_AOUT

IC601

AUDIO AMP

61

IC972

3.3V REG

IC975

5V REG

IC973

12V REG

IC951

ERROR

AMP

L951

IC974

1.8V REG

IC976

1.8V REG

3.3V_STB

5V

1.8V

V1.8V

8V

12V

32V

9

1

IC401

V. OUT

Q522

H. OUT

FOCUS

B1

T522

FBT

SCREEN

EHV

5

23

R_AOUT

V

DEF YOKE

H

SPEAKER L

SPEAKER R

DY01

(No.YA251)2-5 2-6(No.YA251)