JVC AV-14F3, AV-1435 Service Manual

AV-14F3 / AV-1435

AV-1435EE / AV-1435TEE

AV-14FMT3 / AV-1438

AV-14FMG3 / AV-14FMG3B

SCHEMATIC DIAGRAMS

COLOUR TELEVISION

BASIC CHASSIS

AV-14F3 / AV-1435

AV-1435EE / AV-1435TEE

AV-14FMT3 / AV-1438

AV-14FMG3 / AV-14FMG3B

AV-14FMG3

CD-ROM No.SML200207

RM-C90

/-A

[RM-C90]

[RM-C364GY]

[RM-C364]

CONTENTS

NOTE ON USING CIRCUIT DIAGRAMS SEMICONDUCTOR SHAPES BLOCK DIAGRAM CIRCUIT DIAGRAMS PATTERN DIAGRAMS

2-1 2-2 2-3 2-7 2-15

No.52026

Jun. 2002

AV-14F3 / AV-1435 AV-1435EE / AV-1435TEE AV-14FMT3 / AV-1438 AV-14FMG3 / AV-14FMG3B

AV-14F3 / AV-1435

AV-1435EE / AV-1435TEE

AV-14FMT3 / AV-1438

AV-14FMG3 / AV-14FMG3B

SEMICONDUCTOR SHAPES

BLOCK DIA GRAM CIRCUIT DIAGRAMS

MAI N PWB CIRCUI T DIAGRAM

P ATTERN DIAGRAMS

MAIN PW B PATTERN

CRT SOCKET PWB PATTERN

SEMICONDUCTOR SHAPES

TRANSISTOR

BOTTOM VIEW

E C

ECB

BCE

(G)(D)(S )

FRONT VIEW

ECB

TOP VIEW

CHIP TR

2-2 2-3

2-7

2-15 2-17

AV-14F3, AV-1435, AV-1435EE AV-1435TEE, AV-14FMG3,

AV-14FMT3, AV-1438

AV-14FMG3B, AV-14FMG3

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 re place safety critica l components only with manufac tures recommended parts .

2.SPECIFIED VOLTAGE AND WAVEFORM VALUES

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

(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

Sin ce th e vo l tage val ue s of si gn a l cir cui t va ry to some ex ten t according to adjustments, use them as reference values.

: Original setting position when shipped

:DC 20k :H :V

:Others

:All DC voltage values

20µS/div 5mS/div Sweeping time is

specified

3.INDICATION OF PARTS SYMBOL [EXAMPLE]

In the PW board

:R1209

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

:T est po int

(6) Connecting method

/-A

:Ceramic capacitor :M etal ized mylar capa c i tor

:Polypropylene capacitor :Metalized polypropylene capacitor :Metaliz ed film capac itor :Thin film capacitor :Bipolar electrolytic capaci tor :Tant alum capa citor

:As specified

:B1

:9V

:Only test point display

:Connector

:Receptacle

:Wrapping or soldering

:B2 (12V)

:5V

B O TT OM VI EW F R O NT V IEW TO P VI EW

OUT

IN OUTE

1 N

CHIP IC

TO P VI EW

4.IND ICATIONS ON THE CIRCUIT DIAGRAM

(1)Resistors

Resistance value No unit :[

K M

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

Type No indica tion OMR MFR MPR UNFR FR

C omposition resistor 1/2 [W] is specified as 1/2 S 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]

]

:[K

]

:[M ]

:Carbon resistor :Oxide metal film resistor :Metal film resistor :Metal plate resistor :Uninflammable resi stor :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 SERV ICE

This mod el's power cir cuit is pa rtly diffe rent 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 f use or any parts will be broken.

Since the circuit diagram is a standard one, the ci rcuit 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 i ndicated in the part list. When ordering parts, plea se use the numbers t hat appear in the Parts List.

2-2

No.52026

Jun. 2002 No. 52026

AV-14F3 / AV-1435

AV-14F3 / AV-1438

AV-1435EE / AV-1435TEE

AV-1435 / AV-1435EE

AV-14FMT3 / AV-1438

AV-14FMG3 / AV-14FMG3B

BLOCK DIAGRAM [AV-14F3, AV-1435, AV-1435EE, AV-14FMG3, AV-14FMG3/-A, AV-14FMG3B, AV-1438]

TU001

TUNER

Q102

IF AMP

SF101

SF102

AV-14F3 / AV-1435

AV-14F3 / AV-1438 AV-1435EE / AV-1435TEE

AV-1435 / AV-1435EE AV-14FMT3 / AV-1438

AV-14FMG3 / AV-14FMG3 AV-14FMG3 / AV-14FMG3B

AUDIO AMP

AUDIO

IC651

OUT

REAR

VIDEO

AUDIO

VIDEO

OUT

AUDIO

IC702

MEMORY

SCL SDA

37.38

SCL SDA

3.58/ OTH

IC701

MICRO COMPUTER

HEAD

Q103

SCL/SDA

18.19

SAW

AUDIO

OUT

IC301

ECO

REMOCON

KEY

1 CHIP DECODER

IND.

R / G /B

IC421

VIDEO

OUT

AUDIO

RGB

10.11.12

H.OUT V .OUT

V .OUT

VERT.OUT

PHONE

FRONT

VIDEO

AUDIO

CRT SOCKET PWB

RGB DRV

V01

CRT

AC IN

POWER SW

F901

No.52026

LF901

D901

RECT

IC921

POWER

REG.

T921

TRANSF.

IC971

9V REG.

2-3 2-4

REG.

H.OUT

IC972

5V REG.

Q522

H.OUT

REG.

MAIN PWB

No.52026

T522

HVT

DY(V)

DY(H)

DEF.YOKE

FOCUS

SCREEN

EHV

BLOCK DIAGRAM [AV-14FMT3, AV-1435TEE]

TU001

TUNER

AV-14F3 / AV-1435

AV-1435EE / AV-1435TEE

AV-14FMT3 / AV-1438

AV-14FMT3

AV-1435TEE

AV-14FMG3 / AV-14FMG3B

Q102

IF AMP

SF101

AV-14F3 / AV-1435 AV-1435EE / AV-1435TEE

AV-14FMT3 AV-14FMT3 / AV-1438

AV-1435TEE AV-14FMG3 / AV-14FMG3B

AUDIO

IC651

AUDIO AMP

OUT

SF102

REAR

VIDEO

AUDIO

VIDEO

OUT

AUDIO

IC702

MEMORY

SCL SDA

37.38

SCL SDA

3.58/ OTH

IC701

MICRO COMPUTER

TDATA

TCLOCK

20.36

IC821 TEXT

HEAD

Q103

SCL/SDA

18.19

SAW

AUDIO

OUT

IC301

ECO

REMOCON

KEY

1 CHIP DECODER

IND.

R / G /B

IC421

OSD RGB

30.31.32

IC371

RGB.SW

6.7.8

EXT RGB

VIDEO

OUT

AUDIO

RGB

10.11.12

H.OUT V .OUT

V .OUT

VERT.OUT

PHONE

FRONT

VIDEO

AUDIO

CRT SOCKET PWB

RGB

DRV

V01

CRT

AC IN

POWER SW

H.OUT

Q522

H.OUT

REG.

F901

LF901

D901

RECT

IC971

9V REG.

IC972

5V REG.

REG.

T921

IC921

POWER

REG.

TRANSF.

MAIN PWB

No.52026 No.52026

2-5 2-6

T522

HVT

DY(V)

DY(H)

DEF.YOKE

FOCUS

SCREEN

EHV

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